Copy qtmux from revision 148 of the gst-qtmux repository.

Original commit message from CVS:
patch by: Thiago Sousa Santos <thiagossantos@gmail.com>
* configure.ac:
* gst/qtmux/Makefile.am:
* gst/qtmux/atoms.c:
* gst/qtmux/atoms.h:
* gst/qtmux/descriptors.c:
* gst/qtmux/descriptors.h:
* gst/qtmux/fourcc.h:
* gst/qtmux/ftypcc.h:
* gst/qtmux/gstqtmux.c:
* gst/qtmux/gstqtmux.h:
* gst/qtmux/gstqtmuxmap.c:
* gst/qtmux/gstqtmuxmap.h:
* gst/qtmux/properties.c:
* gst/qtmux/properties.h:
Copy qtmux from revision 148 of the gst-qtmux repository.
Fixes #550280.

15 files changed, 6878 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 6dc2b23d..d6d2bdb5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,24 @@
+2008-11-07  David Schleef  <ds@schleef.org>
+
+	patch by: Thiago Sousa Santos <thiagossantos@gmail.com>
+
+	* configure.ac:
+	* gst/qtmux/Makefile.am:
+	* gst/qtmux/atoms.c:
+	* gst/qtmux/atoms.h:
+	* gst/qtmux/descriptors.c:
+	* gst/qtmux/descriptors.h:
+	* gst/qtmux/fourcc.h:
+	* gst/qtmux/ftypcc.h:
+	* gst/qtmux/gstqtmux.c:
+	* gst/qtmux/gstqtmux.h:
+	* gst/qtmux/gstqtmuxmap.c:
+	* gst/qtmux/gstqtmuxmap.h:
+	* gst/qtmux/properties.c:
+	* gst/qtmux/properties.h:
+	  Copy qtmux from revision 148 of the gst-qtmux repository.
+	  Fixes #550280.
+
 2008-11-07  Wim Taymans  <wim.taymans@collabora.co.uk>
 
 	* gst-libs/gst/app/gstappsrc.c: (gst_app_src_class_init),
diff --git a/configure.ac b/configure.ac
index 5e04896e..2a9f956f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -255,6 +255,7 @@ AG_GST_CHECK_PLUGIN(mve)
 AG_GST_CHECK_PLUGIN(nsf)
 AG_GST_CHECK_PLUGIN(nuvdemux)
 AG_GST_CHECK_PLUGIN(pcapparse)
+AG_GST_CHECK_PLUGIN(qtmux)
 AG_GST_CHECK_PLUGIN(rawparse)
 AG_GST_CHECK_PLUGIN(real)
 AG_GST_CHECK_PLUGIN(rtpmanager)
@@ -1409,6 +1410,7 @@ gst/mve/Makefile
 gst/nsf/Makefile
 gst/nuvdemux/Makefile
 gst/pcapparse/Makefile
+gst/qtmux/Makefile
 gst/rawparse/Makefile
 gst/rtpmanager/Makefile
 gst/scaletempo/Makefile
diff --git a/gst/qtmux/Makefile.am b/gst/qtmux/Makefile.am
new file mode 100644
index 00000000..e93ff67b
--- /dev/null
+++ b/gst/qtmux/Makefile.am
@@ -0,0 +1,25 @@
+# plugindir is set in configure
+
+plugin_LTLIBRARIES = libgstqtmux.la
+
+# sources used to compile this plug-in
+libgstqtmux_la_SOURCES = gstqtmux.c \
+			atoms.c \
+			descriptors.c \
+			properties.c \
+			gstqtmuxmap.c
+
+# flags used to compile this plugin
+# add other _CFLAGS and _LIBS as needed
+libgstqtmux_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS)
+libgstqtmux_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
+libgstqtmux_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+# headers we need but don't want installed
+noinst_HEADERS = gstqtmux.h \
+		atoms.h \
+		descriptors.h \
+		properties.h \
+		fourcc.h \
+		ftypcc.h \
+		gstqtmuxmap.h
diff --git a/gst/qtmux/atoms.c b/gst/qtmux/atoms.c
new file mode 100644
index 00000000..3b0d83fe
--- /dev/null
+++ b/gst/qtmux/atoms.c
@@ -0,0 +1,2936 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ * Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "atoms.h"
+#include <string.h>
+#include <glib.h>
+
+/* only needed for gst_util_uint64_scale */
+#include <gst/gst.h>
+
+/**
+ * Creates a new AtomsContext for the given flavor.
+ */
+AtomsContext *
+atoms_context_new (AtomsTreeFlavor flavor)
+{
+  AtomsContext *context = g_new0 (AtomsContext, 1);
+  context->flavor = flavor;
+  return context;
+}
+
+/**
+ * Frees an AtomsContext and all memory associated with it
+ */
+void
+atoms_context_free (AtomsContext * context)
+{
+  g_free (context);
+}
+
+/* -- creation, initialization, clear and free functions -- */
+
+#define SECS_PER_DAY (24 * 60 * 60)
+#define LEAP_YEARS_FROM_1904_TO_1970 17
+
+static guint64
+get_current_qt_time ()
+{
+  GTimeVal timeval;
+
+  g_get_current_time (&timeval);
+  /* FIXME this should use UTC coordinated time */
+  return timeval.tv_sec + (((1970 - 1904) * (guint64) 365) +
+      LEAP_YEARS_FROM_1904_TO_1970) * SECS_PER_DAY;
+}
+
+static void
+common_time_info_init (TimeInfo * ti)
+{
+  ti->creation_time = ti->modification_time = get_current_qt_time ();
+  ti->timescale = 0;
+  ti->duration = 0;
+}
+
+static void
+atom_header_set (Atom * header, guint32 fourcc, gint32 size, gint64 ext_size)
+{
+  header->type = fourcc;
+  header->size = size;
+  header->extended_size = ext_size;
+}
+
+static void
+atom_clear (Atom * atom)
+{
+}
+
+static void
+atom_full_init (AtomFull * full, guint32 fourcc, gint32 size, gint64 ext_size,
+    guint8 version, guint8 flags[3])
+{
+  atom_header_set (&(full->header), fourcc, size, ext_size);
+  full->version = version;
+  full->flags[0] = flags[0];
+  full->flags[1] = flags[1];
+  full->flags[2] = flags[2];
+}
+
+static void
+atom_full_clear (AtomFull * full)
+{
+  atom_clear (&full->header);
+}
+
+static void
+atom_full_free (AtomFull * full)
+{
+  atom_full_clear (full);
+  g_free (full);
+}
+
+static AtomInfo *
+build_atom_info_wrapper (Atom * atom, gpointer copy_func, gpointer free_func)
+{
+  AtomInfo *info = NULL;
+
+  if (atom) {
+    info = g_new0 (AtomInfo, 1);
+
+    info->atom = atom;
+    info->copy_data_func = copy_func;
+    info->free_func = free_func;
+  }
+
+  return info;
+}
+
+static GList *
+atom_info_list_prepend_atom (GList * ai, Atom * atom,
+    AtomCopyDataFunc copy_func, AtomFreeFunc free_func)
+{
+  if (atom)
+    return g_list_prepend (ai,
+        build_atom_info_wrapper (atom, copy_func, free_func));
+  else
+    return ai;
+}
+
+static void
+atom_info_list_free (GList * ai)
+{
+  while (ai) {
+    AtomInfo *info = (AtomInfo *) ai->data;
+
+    info->free_func (info->atom);
+    g_free (info);
+    ai = g_list_delete_link (ai, ai);
+  }
+}
+
+static AtomData *
+atom_data_new (guint32 fourcc)
+{
+  AtomData *data = g_new0 (AtomData, 1);
+
+  atom_header_set (&data->header, fourcc, 0, 0);
+  return data;
+}
+
+static void
+atom_data_alloc_mem (AtomData * data, guint32 size)
+{
+  if (data->data) {
+    g_free (data->data);
+  }
+  data->data = g_new0 (guint8, size);
+  data->datalen = size;
+}
+
+static AtomData *
+atom_data_new_from_gst_buffer (guint32 fourcc, const GstBuffer * buf)
+{
+  AtomData *data = atom_data_new (fourcc);
+
+  atom_data_alloc_mem (data, GST_BUFFER_SIZE (buf));
+  g_memmove (data->data, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
+  return data;
+}
+
+static void
+atom_data_free (AtomData * data)
+{
+  atom_clear (&data->header);
+  g_free (data->data);
+  g_free (data);
+}
+
+static void
+atom_ftyp_init (AtomFTYP * ftyp, guint32 major, guint32 version, GList * brands)
+{
+  gint index;
+  GList *it = NULL;
+
+  atom_header_set (&ftyp->header, FOURCC_ftyp, 16, 0);
+  ftyp->major_brand = major;
+  ftyp->version = version;
+
+  /* always include major brand as compatible brand */
+  ftyp->compatible_brands_size = g_list_length (brands) + 1;
+  ftyp->compatible_brands = g_new (guint32, ftyp->compatible_brands_size);
+
+  ftyp->compatible_brands[0] = major;
+  index = 1;
+  for (it = brands; it != NULL; it = g_list_next (it)) {
+    ftyp->compatible_brands[index++] = GPOINTER_TO_UINT (it->data);
+  }
+}
+
+AtomFTYP *
+atom_ftyp_new (AtomsContext * context, guint32 major, guint32 version,
+    GList * brands)
+{
+  AtomFTYP *ftyp = g_new0 (AtomFTYP, 1);
+
+  atom_ftyp_init (ftyp, major, version, brands);
+  return ftyp;
+}
+
+void
+atom_ftyp_free (AtomFTYP * ftyp)
+{
+  atom_clear (&ftyp->header);
+  g_free (ftyp->compatible_brands);
+  ftyp->compatible_brands = NULL;
+  g_free (ftyp);
+}
+
+static void
+atom_esds_init (AtomESDS * esds)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&esds->header, FOURCC_esds, 0, 0, 0, flags);
+  desc_es_init (&esds->es);
+}
+
+static AtomESDS *
+atom_esds_new ()
+{
+  AtomESDS *esds = g_new0 (AtomESDS, 1);
+
+  atom_esds_init (esds);
+  return esds;
+}
+
+static void
+atom_esds_free (AtomESDS * esds)
+{
+  atom_full_clear (&esds->header);
+  desc_es_descriptor_clear (&esds->es);
+  g_free (esds);
+}
+
+static AtomFRMA *
+atom_frma_new ()
+{
+  AtomFRMA *frma = g_new0 (AtomFRMA, 1);
+
+  atom_header_set (&frma->header, FOURCC_frma, 0, 0);
+  return frma;
+}
+
+static void
+atom_frma_free (AtomFRMA * frma)
+{
+  atom_clear (&frma->header);
+  g_free (frma);
+}
+
+static AtomWAVE *
+atom_wave_new ()
+{
+  AtomWAVE *wave = g_new0 (AtomWAVE, 1);
+
+  atom_header_set (&wave->header, FOURCC_wave, 0, 0);
+  return wave;
+}
+
+static void
+atom_wave_free (AtomWAVE * wave)
+{
+  atom_clear (&wave->header);
+  atom_info_list_free (wave->extension_atoms);
+  g_free (wave);
+}
+
+static void
+atom_sample_entry_init (SampleTableEntry * se, guint32 type)
+{
+  atom_header_set (&se->header, type, 0, 0);
+
+  memset (se->reserved, 0, sizeof (guint8) * 6);
+  se->data_reference_index = 0;
+}
+
+static void
+atom_sample_entry_free (SampleTableEntry * se)
+{
+  atom_clear (&se->header);
+}
+
+static void
+sample_entry_mp4a_init (SampleTableEntryMP4A * mp4a)
+{
+  atom_sample_entry_init (&mp4a->se, FOURCC_mp4a);
+
+  mp4a->version = 0;
+  mp4a->revision_level = 0;
+  mp4a->vendor = 0;
+  mp4a->channels = 2;
+  mp4a->sample_size = 16;
+  mp4a->compression_id = 0;
+  mp4a->packet_size = 0;
+  mp4a->sample_rate = 0;
+  /* following only used if version is 1 */
+  mp4a->samples_per_packet = 0;
+  mp4a->bytes_per_packet = 0;
+  mp4a->bytes_per_frame = 0;
+  mp4a->bytes_per_sample = 0;
+
+  mp4a->extension_atoms = NULL;
+}
+
+static SampleTableEntryMP4A *
+sample_entry_mp4a_new ()
+{
+  SampleTableEntryMP4A *mp4a = g_new0 (SampleTableEntryMP4A, 1);
+
+  sample_entry_mp4a_init (mp4a);
+  return mp4a;
+}
+
+static void
+sample_entry_mp4a_free (SampleTableEntryMP4A * mp4a)
+{
+  atom_sample_entry_free (&mp4a->se);
+  atom_info_list_free (mp4a->extension_atoms);
+  g_free (mp4a);
+}
+
+static void
+sample_entry_mp4v_init (SampleTableEntryMP4V * mp4v, AtomsContext * context)
+{
+  atom_sample_entry_init (&mp4v->se, FOURCC_mp4v);
+
+  mp4v->version = 0;
+  mp4v->revision_level = 0;
+  mp4v->vendor = 0;
+
+  mp4v->temporal_quality = 0;
+  mp4v->spatial_quality = 0;
+
+  /* qt and ISO base media do not contradict, and examples agree */
+  mp4v->horizontal_resolution = 0x00480000;
+  mp4v->vertical_resolution = 0x00480000;
+
+  mp4v->datasize = 0;
+  mp4v->frame_count = 1;
+
+  memset (mp4v->compressor, 0, sizeof (guint8) * 32);
+
+  mp4v->depth = 0;
+  mp4v->color_table_id = 0;
+
+  mp4v->extension_atoms = NULL;
+}
+
+static void
+sample_entry_mp4v_free (SampleTableEntryMP4V * mp4v)
+{
+  atom_sample_entry_free (&mp4v->se);
+  atom_info_list_free (mp4v->extension_atoms);
+  g_free (mp4v);
+}
+
+static SampleTableEntryMP4V *
+sample_entry_mp4v_new (AtomsContext * context)
+{
+  SampleTableEntryMP4V *mp4v = g_new0 (SampleTableEntryMP4V, 1);
+
+  sample_entry_mp4v_init (mp4v, context);
+  return mp4v;
+}
+
+static void
+atom_stsd_init (AtomSTSD * stsd)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&stsd->header, FOURCC_stsd, 0, 0, 0, flags);
+  stsd->entries = NULL;
+}
+
+static void
+atom_stsd_clear (AtomSTSD * stsd)
+{
+  GList *walker;
+
+  atom_full_clear (&stsd->header);
+  walker = stsd->entries;
+  while (walker) {
+    GList *aux = walker;
+    SampleTableEntry *se = (SampleTableEntry *) aux->data;
+
+    walker = g_list_next (walker);
+    stsd->entries = g_list_remove_link (stsd->entries, aux);
+
+    switch (se->kind) {
+      case AUDIO:
+        sample_entry_mp4a_free ((SampleTableEntryMP4A *) se);
+        break;
+      case VIDEO:
+        sample_entry_mp4v_free ((SampleTableEntryMP4V *) se);
+        break;
+      default:
+        /* best possible cleanup */
+        atom_sample_entry_free (se);
+    }
+    g_list_free (aux);
+  }
+}
+
+static void
+atom_ctts_init (AtomCTTS * ctts)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&ctts->header, FOURCC_ctts, 0, 0, 0, flags);
+  ctts->entries = NULL;
+}
+
+static AtomCTTS *
+atom_ctts_new ()
+{
+  AtomCTTS *ctts = g_new0 (AtomCTTS, 1);
+
+  atom_ctts_init (ctts);
+  return ctts;
+}
+
+static void
+atom_ctts_free (AtomCTTS * ctts)
+{
+  GList *walker;
+
+  atom_full_clear (&ctts->header);
+  walker = ctts->entries;
+  while (walker) {
+    GList *aux = walker;
+
+    walker = g_list_next (walker);
+    ctts->entries = g_list_remove_link (ctts->entries, aux);
+    g_free ((CTTSEntry *) aux->data);
+    g_list_free (aux);
+  }
+  g_free (ctts);
+}
+
+static void
+atom_stts_init (AtomSTTS * stts)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&stts->header, FOURCC_stts, 0, 0, 0, flags);
+  stts->entries = NULL;
+}
+
+static void
+atom_stts_clear (AtomSTTS * stts)
+{
+  GList *walker;
+
+  atom_full_clear (&stts->header);
+  walker = stts->entries;
+  while (walker) {
+    GList *aux = walker;
+
+    walker = g_list_next (walker);
+    stts->entries = g_list_remove_link (stts->entries, aux);
+    g_free ((STTSEntry *) aux->data);
+    g_list_free (aux);
+  }
+  stts->n_entries = 0;
+}
+
+static void
+atom_stsz_init (AtomSTSZ * stsz)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&stsz->header, FOURCC_stsz, 0, 0, 0, flags);
+  stsz->sample_size = 0;
+  stsz->table_size = 0;
+  stsz->entries = NULL;
+}
+
+static void
+atom_stsz_clear (AtomSTSZ * stsz)
+{
+  atom_full_clear (&stsz->header);
+  g_list_free (stsz->entries);
+  stsz->entries = NULL;
+  stsz->table_size = 0;
+}
+
+static void
+atom_stsc_init (AtomSTSC * stsc)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&stsc->header, FOURCC_stsc, 0, 0, 0, flags);
+  stsc->entries = NULL;
+  stsc->n_entries = 0;
+}
+
+static void
+atom_stsc_clear (AtomSTSC * stsc)
+{
+  GList *walker;
+
+  atom_full_clear (&stsc->header);
+  walker = stsc->entries;
+  while (walker) {
+    GList *aux = walker;
+
+    walker = g_list_next (walker);
+    stsc->entries = g_list_remove_link (stsc->entries, aux);
+    g_free ((STSCEntry *) aux->data);
+    g_list_free (aux);
+  }
+  stsc->n_entries = 0;
+}
+
+static void
+atom_co64_init (AtomSTCO64 * co64)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&co64->header, FOURCC_co64, 0, 0, 0, flags);
+  co64->entries = NULL;
+  co64->n_entries = 0;
+}
+
+static void
+atom_stco64_clear (AtomSTCO64 * stco64)
+{
+  GList *walker;
+
+  atom_full_clear (&stco64->header);
+  walker = stco64->entries;
+  while (walker) {
+    GList *aux = walker;
+
+    walker = g_list_next (walker);
+    stco64->entries = g_list_remove_link (stco64->entries, aux);
+    g_free ((guint64 *) aux->data);
+    g_list_free (aux);
+  }
+  stco64->n_entries = 0;
+}
+
+static void
+atom_stss_init (AtomSTSS * stss)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&stss->header, FOURCC_stss, 0, 0, 0, flags);
+  stss->entries = NULL;
+  stss->n_entries = 0;
+}
+
+static void
+atom_stss_clear (AtomSTSS * stss)
+{
+  atom_full_clear (&stss->header);
+  g_list_free (stss->entries);
+  stss->entries = NULL;
+  stss->n_entries = 0;
+}
+
+static void
+atom_stbl_init (AtomSTBL * stbl)
+{
+  atom_header_set (&stbl->header, FOURCC_stbl, 0, 0);
+
+  atom_stts_init (&stbl->stts);
+  atom_stss_init (&stbl->stss);
+  atom_stsd_init (&stbl->stsd);
+  atom_stsz_init (&stbl->stsz);
+  atom_stsc_init (&stbl->stsc);
+  stbl->ctts = NULL;
+
+  atom_co64_init (&stbl->stco64);
+}
+
+static void
+atom_stbl_clear (AtomSTBL * stbl)
+{
+  atom_clear (&stbl->header);
+  atom_stsd_clear (&stbl->stsd);
+  atom_stts_clear (&stbl->stts);
+  atom_stss_clear (&stbl->stss);
+  atom_stsc_clear (&stbl->stsc);
+  atom_stsz_clear (&stbl->stsz);
+  if (stbl->ctts) {
+    atom_ctts_free (stbl->ctts);
+  }
+  atom_stco64_clear (&stbl->stco64);
+}
+
+static void
+atom_vmhd_init (AtomVMHD * vmhd, AtomsContext * context)
+{
+  guint8 flags[3] = { 0, 0, 1 };
+
+  atom_full_init (&vmhd->header, FOURCC_vmhd, 0, 0, 0, flags);
+  vmhd->graphics_mode = 0x0;
+  memset (vmhd->opcolor, 0, sizeof (guint16) * 3);
+
+  if (context->flavor == ATOMS_TREE_FLAVOR_MOV) {
+    vmhd->graphics_mode = 0x40;
+    vmhd->opcolor[0] = 32768;
+    vmhd->opcolor[1] = 32768;
+    vmhd->opcolor[2] = 32768;
+  }
+}
+
+static AtomVMHD *
+atom_vmhd_new (AtomsContext * context)
+{
+  AtomVMHD *vmhd = g_new0 (AtomVMHD, 1);
+
+  atom_vmhd_init (vmhd, context);
+  return vmhd;
+}
+
+static void
+atom_vmhd_free (AtomVMHD * vmhd)
+{
+  atom_full_clear (&vmhd->header);
+  g_free (vmhd);
+}
+
+static void
+atom_smhd_init (AtomSMHD * smhd)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&smhd->header, FOURCC_smhd, 0, 0, 0, flags);
+  smhd->balance = 0;
+  smhd->reserved = 0;
+}
+
+static AtomSMHD *
+atom_smhd_new ()
+{
+  AtomSMHD *smhd = g_new0 (AtomSMHD, 1);
+
+  atom_smhd_init (smhd);
+  return smhd;
+}
+
+static void
+atom_smhd_free (AtomSMHD * smhd)
+{
+  atom_full_clear (&smhd->header);
+  g_free (smhd);
+}
+
+static void
+atom_hmhd_free (AtomHMHD * hmhd)
+{
+  atom_full_clear (&hmhd->header);
+  g_free (hmhd);
+}
+
+static void
+atom_hdlr_init (AtomHDLR * hdlr)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&hdlr->header, FOURCC_hdlr, 0, 0, 0, flags);
+
+  hdlr->component_type = 0;
+  hdlr->handler_type = 0;
+  hdlr->manufacturer = 0;
+  hdlr->flags = 0;
+  hdlr->flags_mask = 0;
+  hdlr->name = g_strdup ("");
+}
+
+static AtomHDLR *
+atom_hdlr_new ()
+{
+  AtomHDLR *hdlr = g_new0 (AtomHDLR, 1);
+
+  atom_hdlr_init (hdlr);
+  return hdlr;
+}
+
+static void
+atom_hdlr_clear (AtomHDLR * hdlr)
+{
+  atom_full_clear (&hdlr->header);
+  if (hdlr->name) {
+    g_free (hdlr->name);
+    hdlr->name = NULL;
+  }
+}
+
+static void
+atom_hdlr_free (AtomHDLR * hdlr)
+{
+  atom_hdlr_clear (hdlr);
+  g_free (hdlr);
+}
+
+static void
+atom_url_init (AtomURL * url)
+{
+  guint8 flags[3] = { 0, 0, 1 };
+
+  atom_full_init (&url->header, FOURCC_url_, 0, 0, 0, flags);
+  url->location = NULL;
+}
+
+static void
+atom_url_free (AtomURL * url)
+{
+  atom_full_clear (&url->header);
+  if (url->location) {
+    g_free (url->location);
+    url->location = NULL;
+  }
+  g_free (url);
+}
+
+static AtomURL *
+atom_url_new ()
+{
+  AtomURL *url = g_new0 (AtomURL, 1);
+
+  atom_url_init (url);
+  return url;
+}
+
+static AtomFull *
+atom_alis_new ()
+{
+  guint8 flags[3] = { 0, 0, 1 };
+  AtomFull *alis = g_new0 (AtomFull, 1);
+
+  atom_full_init (alis, FOURCC_alis, 0, 0, 0, flags);
+  return alis;
+}
+
+static void
+atom_dref_init (AtomDREF * dref, AtomsContext * context)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&dref->header, FOURCC_dref, 0, 0, 0, flags);
+
+  /* in either case, alis or url init arranges to set self-contained flag */
+  if (context->flavor == ATOMS_TREE_FLAVOR_MOV) {
+    /* alis dref for qt */
+    AtomFull *alis = atom_alis_new ();
+    dref->entries = g_list_append (dref->entries, alis);
+  } else {
+    /* url for iso spec, as 'alis' not specified there */
+    AtomURL *url = atom_url_new ();
+    dref->entries = g_list_append (dref->entries, url);
+  }
+}
+
+static void
+atom_dref_clear (AtomDREF * dref)
+{
+  GList *walker;
+
+  atom_full_clear (&dref->header);
+  walker = dref->entries;
+  while (walker) {
+    GList *aux = walker;
+    Atom *atom = (Atom *) aux->data;
+
+    walker = g_list_next (walker);
+    dref->entries = g_list_remove_link (dref->entries, aux);
+    switch (atom->type) {
+      case FOURCC_alis:
+        atom_full_free ((AtomFull *) atom);
+        break;
+      case FOURCC_url_:
+        atom_url_free ((AtomURL *) atom);
+        break;
+      default:
+        /* we do nothing, better leak than crash */
+        break;
+    }
+    g_list_free (aux);
+  }
+}
+
+static void
+atom_dinf_init (AtomDINF * dinf, AtomsContext * context)
+{
+  atom_header_set (&dinf->header, FOURCC_dinf, 0, 0);
+  atom_dref_init (&dinf->dref, context);
+}
+
+static void
+atom_dinf_clear (AtomDINF * dinf)
+{
+  atom_clear (&dinf->header);
+  atom_dref_clear (&dinf->dref);
+}
+
+static void
+atom_minf_init (AtomMINF * minf, AtomsContext * context)
+{
+  atom_header_set (&minf->header, FOURCC_minf, 0, 0);
+
+  minf->vmhd = NULL;
+  minf->smhd = NULL;
+  minf->hmhd = NULL;
+
+  if (context->flavor == ATOMS_TREE_FLAVOR_MOV) {
+    minf->hdlr = atom_hdlr_new ();
+    minf->hdlr->component_type = FOURCC_dhlr;
+    minf->hdlr->handler_type = FOURCC_alis;
+  } else {
+    minf->hdlr = NULL;
+  }
+  atom_dinf_init (&minf->dinf, context);
+  atom_stbl_init (&minf->stbl);
+}
+
+static void
+atom_minf_clear_handlers (AtomMINF * minf)
+{
+  if (minf->vmhd) {
+    atom_vmhd_free (minf->vmhd);
+    minf->vmhd = NULL;
+  }
+  if (minf->smhd) {
+    atom_smhd_free (minf->smhd);
+    minf->smhd = NULL;
+  }
+  if (minf->hmhd) {
+    atom_hmhd_free (minf->hmhd);
+    minf->hmhd = NULL;
+  }
+}
+
+static void
+atom_minf_clear (AtomMINF * minf)
+{
+  atom_clear (&minf->header);
+  atom_minf_clear_handlers (minf);
+  if (minf->hdlr) {
+    atom_hdlr_free (minf->hdlr);
+  }
+  atom_dinf_clear (&minf->dinf);
+  atom_stbl_clear (&minf->stbl);
+}
+
+static void
+atom_mdhd_init (AtomMDHD * mdhd)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&mdhd->header, FOURCC_mdhd, 0, 0, 0, flags);
+  common_time_info_init (&mdhd->time_info);
+  mdhd->language_code = 0;
+  mdhd->quality = 0;
+}
+
+static void
+atom_mdhd_clear (AtomMDHD * mdhd)
+{
+  atom_full_clear (&mdhd->header);
+}
+
+static void
+atom_mdia_init (AtomMDIA * mdia, AtomsContext * context)
+{
+  atom_header_set (&mdia->header, FOURCC_mdia, 0, 0);
+
+  atom_mdhd_init (&mdia->mdhd);
+  atom_hdlr_init (&mdia->hdlr);
+  atom_minf_init (&mdia->minf, context);
+}
+
+static void
+atom_mdia_clear (AtomMDIA * mdia)
+{
+  atom_clear (&mdia->header);
+  atom_mdhd_clear (&mdia->mdhd);
+  atom_hdlr_clear (&mdia->hdlr);
+  atom_minf_clear (&mdia->minf);
+}
+
+static void
+atom_tkhd_init (AtomTKHD * tkhd, AtomsContext * context)
+{
+  /*
+   * flags info
+   * 1 -> track enabled
+   * 2 -> track in movie
+   * 4 -> track in preview
+   */
+  guint8 flags[3] = { 0, 0, 7 };
+
+  atom_full_init (&tkhd->header, FOURCC_tkhd, 0, 0, 0, flags);
+
+  tkhd->creation_time = tkhd->modification_time = get_current_qt_time ();
+  tkhd->duration = 0;
+  tkhd->track_ID = 0;
+  tkhd->reserved = 0;
+
+  tkhd->reserved2[0] = tkhd->reserved2[1] = 0;
+  tkhd->layer = 0;
+  tkhd->alternate_group = 0;
+  tkhd->volume = 0;
+  tkhd->reserved3 = 0;
+  memset (tkhd->matrix, 0, sizeof (guint32) * 9);
+  tkhd->matrix[0] = 1 << 16;
+  tkhd->matrix[4] = 1 << 16;
+  tkhd->matrix[8] = 16384 << 16;
+  tkhd->width = 0;
+  tkhd->height = 0;
+}
+
+static void
+atom_tkhd_clear (AtomTKHD * tkhd)
+{
+  atom_full_clear (&tkhd->header);
+}
+
+static void
+atom_trak_init (AtomTRAK * trak, AtomsContext * context)
+{
+  atom_header_set (&trak->header, FOURCC_trak, 0, 0);
+
+  atom_tkhd_init (&trak->tkhd, context);
+  atom_mdia_init (&trak->mdia, context);
+}
+
+AtomTRAK *
+atom_trak_new (AtomsContext * context)
+{
+  AtomTRAK *trak = g_new0 (AtomTRAK, 1);
+
+  atom_trak_init (trak, context);
+  return trak;
+}
+
+static void
+atom_trak_free (AtomTRAK * trak)
+{
+  atom_clear (&trak->header);
+  atom_tkhd_clear (&trak->tkhd);
+  atom_mdia_clear (&trak->mdia);
+  g_free (trak);
+}
+
+static void
+atom_ilst_init (AtomILST * ilst)
+{
+  atom_header_set (&ilst->header, FOURCC_ilst, 0, 0);
+  ilst->entries = NULL;
+}
+
+static AtomILST *
+atom_ilst_new ()
+{
+  AtomILST *ilst = g_new0 (AtomILST, 1);
+
+  atom_ilst_init (ilst);
+  return ilst;
+}
+
+static void
+atom_ilst_free (AtomILST * ilst)
+{
+  if (ilst->entries)
+    atom_info_list_free (ilst->entries);
+  atom_clear (&ilst->header);
+  g_free (ilst);
+}
+
+static void
+atom_meta_init (AtomMETA * meta)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&meta->header, FOURCC_meta, 0, 0, 0, flags);
+  atom_hdlr_init (&meta->hdlr);
+  /* FIXME (ISOM says this is always 0) */
+  meta->hdlr.component_type = FOURCC_mhlr;
+  meta->hdlr.handler_type = FOURCC_mdir;
+  meta->ilst = NULL;
+}
+
+static AtomMETA *
+atom_meta_new ()
+{
+  AtomMETA *meta = g_new0 (AtomMETA, 1);
+
+  atom_meta_init (meta);
+  return meta;
+}
+
+static void
+atom_meta_free (AtomMETA * meta)
+{
+  atom_full_clear (&meta->header);
+  atom_hdlr_clear (&meta->hdlr);
+  atom_ilst_free (meta->ilst);
+  meta->ilst = NULL;
+  g_free (meta);
+}
+
+static void
+atom_udta_init (AtomUDTA * udta)
+{
+  atom_header_set (&udta->header, FOURCC_udta, 0, 0);
+  udta->meta = NULL;
+}
+
+static AtomUDTA *
+atom_udta_new ()
+{
+  AtomUDTA *udta = g_new0 (AtomUDTA, 1);
+
+  atom_udta_init (udta);
+  return udta;
+}
+
+static void
+atom_udta_free (AtomUDTA * udta)
+{
+  atom_clear (&udta->header);
+  atom_meta_free (udta->meta);
+  udta->meta = NULL;
+  g_free (udta);
+}
+
+static void
+atom_tag_data_init (AtomTagData * data)
+{
+  guint8 flags[] = { 0, 0, 0 };
+
+  atom_full_init (&data->header, FOURCC_data, 0, 0, 0, flags);
+}
+
+static void
+atom_tag_data_clear (AtomTagData * data)
+{
+  atom_full_clear (&data->header);
+  g_free (data->data);
+  data->datalen = 0;
+}
+
+/*
+ * Fourcc is the tag fourcc
+ * flags will be truncated to 24bits
+ */
+static AtomTag *
+atom_tag_new (guint32 fourcc, guint32 flags_as_uint)
+{
+  AtomTag *tag = g_new0 (AtomTag, 1);
+
+  tag->header.type = fourcc;
+  atom_tag_data_init (&tag->data);
+  tag->data.header.flags[2] = flags_as_uint & 0xFF;
+  tag->data.header.flags[1] = flags_as_uint & 0xFF00;
+  tag->data.header.flags[0] = flags_as_uint & 0xFF0000;
+  return tag;
+}
+
+static void
+atom_tag_free (AtomTag * tag)
+{
+  atom_clear (&tag->header);
+  atom_tag_data_clear (&tag->data);
+  g_free (tag);
+}
+
+static void
+atom_mvhd_init (AtomMVHD * mvhd)
+{
+  guint8 flags[3] = { 0, 0, 0 };
+
+  atom_full_init (&(mvhd->header), FOURCC_mvhd, sizeof (AtomMVHD), 0, 0, flags);
+
+  common_time_info_init (&mvhd->time_info);
+
+  mvhd->prefered_rate = 1 << 16;
+  mvhd->volume = 1 << 8;
+  mvhd->reserved3 = 0;
+  memset (mvhd->reserved4, 0, sizeof (guint32[2]));
+
+  memset (mvhd->matrix, 0, sizeof (guint32[9]));
+  mvhd->matrix[0] = 1 << 16;
+  mvhd->matrix[4] = 1 << 16;
+  mvhd->matrix[8] = 16384 << 16;
+
+  mvhd->preview_time = 0;
+  mvhd->preview_duration = 0;
+  mvhd->poster_time = 0;
+  mvhd->selection_time = 0;
+  mvhd->selection_duration = 0;
+  mvhd->current_time = 0;
+
+  mvhd->next_track_id = 1;
+}
+
+static void
+atom_mvhd_clear (AtomMVHD * mvhd)
+{
+  atom_full_clear (&mvhd->header);
+}
+
+static void
+atom_moov_init (AtomMOOV * moov, AtomsContext * context)
+{
+  atom_header_set (&(moov->header), FOURCC_moov, 0, 0);
+  atom_mvhd_init (&(moov->mvhd));
+  moov->udta = NULL;
+  moov->traks = NULL;
+}
+
+AtomMOOV *
+atom_moov_new (AtomsContext * context)
+{
+  AtomMOOV *moov = g_new0 (AtomMOOV, 1);
+
+  atom_moov_init (moov, context);
+  return moov;
+}
+
+void
+atom_moov_free (AtomMOOV * moov)
+{
+  GList *walker;
+
+  atom_clear (&moov->header);
+  atom_mvhd_clear (&moov->mvhd);
+
+  walker = moov->traks;
+  while (walker) {
+    GList *aux = walker;
+
+    walker = g_list_next (walker);
+    moov->traks = g_list_remove_link (moov->traks, aux);
+    atom_trak_free ((AtomTRAK *) aux->data);
+    g_list_free (aux);
+  }
+
+  if (moov->udta) {
+    atom_udta_free (moov->udta);
+    moov->udta = NULL;
+  }
+
+  g_free (moov);
+}
+
+/* -- end of init / free -- */
+
+/* -- copy data functions -- */
+
+static guint8
+atom_full_get_version (AtomFull * full)
+{
+  return full->version;
+}
+
+static guint64
+common_time_info_copy_data (TimeInfo * ti, gboolean trunc_to_32,
+    guint8 ** buffer, guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (trunc_to_32) {
+    prop_copy_uint32 ((guint32) ti->creation_time, buffer, size, offset);
+    prop_copy_uint32 ((guint32) ti->modification_time, buffer, size, offset);
+    prop_copy_uint32 (ti->timescale, buffer, size, offset);
+    prop_copy_uint32 ((guint32) ti->duration, buffer, size, offset);
+  } else {
+    prop_copy_uint64 (ti->creation_time, buffer, size, offset);
+    prop_copy_uint64 (ti->modification_time, buffer, size, offset);
+    prop_copy_uint32 (ti->timescale, buffer, size, offset);
+    prop_copy_uint64 (ti->duration, buffer, size, offset);
+  }
+  return *offset - original_offset;
+}
+
+static void
+atom_write_size (guint8 ** buffer, guint64 * size, guint64 * offset,
+    guint64 atom_pos)
+{
+  /* this only works for non-extended atom size, which is OK
+   * (though it could be made to do mem_move, etc and write extended size) */
+  prop_copy_uint32 (*offset - atom_pos, buffer, size, &atom_pos);
+}
+
+guint64
+atom_copy_data (Atom * atom, guint8 ** buffer, guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  /* copies type and size */
+  prop_copy_uint32 (atom->size, buffer, size, offset);
+  prop_copy_fourcc (atom->type, buffer, size, offset);
+
+  /* extended size needed */
+  if (atom->size == 1) {
+    /* really should not happen other than with mdat atom;
+     * would be a problem for size (re)write code, not to mention memory */
+    g_return_val_if_fail (atom->type == FOURCC_mdat, 0);
+    prop_copy_uint64 (atom->extended_size, buffer, size, offset);
+  } else {
+    /* just in case some trivially derived atom does not do so */
+    atom_write_size (buffer, size, offset, original_offset);
+  }
+
+  return *offset - original_offset;
+}
+
+static guint64
+atom_full_copy_data (AtomFull * atom, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&atom->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint8 (atom->version, buffer, size, offset);
+  prop_copy_uint8_array (atom->flags, 3, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_info_list_copy_data (GList * ai, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  while (ai) {
+    AtomInfo *info = (AtomInfo *) ai->data;
+
+    if (!info->copy_data_func (info->atom, buffer, size, offset)) {
+      return 0;
+    }
+    ai = g_list_next (ai);
+  }
+
+  return *offset - original_offset;
+}
+
+static guint64
+atom_data_copy_data (AtomData * data, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&data->header, buffer, size, offset)) {
+    return 0;
+  }
+  if (data->datalen)
+    prop_copy_uint8_array (data->data, data->datalen, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+guint64
+atom_ftyp_copy_data (AtomFTYP * ftyp, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&ftyp->header, buffer, size, offset)) {
+    return 0;
+  }
+  prop_copy_fourcc (ftyp->major_brand, buffer, size, offset);
+  prop_copy_uint32 (ftyp->version, buffer, size, offset);
+
+  prop_copy_fourcc_array (ftyp->compatible_brands, ftyp->compatible_brands_size,
+      buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_mvhd_copy_data (AtomMVHD * atom, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint8 version;
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&(atom->header), buffer, size, offset)) {
+    return 0;
+  }
+
+  version = atom_full_get_version (&(atom->header));
+  if (version == 0) {
+    common_time_info_copy_data (&atom->time_info, TRUE, buffer, size, offset);
+  } else if (version == 1) {
+    common_time_info_copy_data (&atom->time_info, FALSE, buffer, size, offset);
+  } else {
+    *offset = original_offset;
+    return 0;
+  }
+
+  prop_copy_uint32 (atom->prefered_rate, buffer, size, offset);
+  prop_copy_uint16 (atom->volume, buffer, size, offset);
+  prop_copy_uint16 (atom->reserved3, buffer, size, offset);
+  prop_copy_uint32_array (atom->reserved4, 2, buffer, size, offset);
+  prop_copy_uint32_array (atom->matrix, 9, buffer, size, offset);
+  prop_copy_uint32 (atom->preview_time, buffer, size, offset);
+  prop_copy_uint32 (atom->preview_duration, buffer, size, offset);
+  prop_copy_uint32 (atom->poster_time, buffer, size, offset);
+  prop_copy_uint32 (atom->selection_time, buffer, size, offset);
+  prop_copy_uint32 (atom->selection_duration, buffer, size, offset);
+  prop_copy_uint32 (atom->current_time, buffer, size, offset);
+
+  prop_copy_uint32 (atom->next_track_id, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_tkhd_copy_data (AtomTKHD * tkhd, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&tkhd->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (atom_full_get_version (&tkhd->header) == 0) {
+    prop_copy_uint32 ((guint32) tkhd->creation_time, buffer, size, offset);
+    prop_copy_uint32 ((guint32) tkhd->modification_time, buffer, size, offset);
+    prop_copy_uint32 (tkhd->track_ID, buffer, size, offset);
+    prop_copy_uint32 (tkhd->reserved, buffer, size, offset);
+    prop_copy_uint32 ((guint32) tkhd->duration, buffer, size, offset);
+  } else {
+    prop_copy_uint64 (tkhd->creation_time, buffer, size, offset);
+    prop_copy_uint64 (tkhd->modification_time, buffer, size, offset);
+    prop_copy_uint32 (tkhd->track_ID, buffer, size, offset);
+    prop_copy_uint32 (tkhd->reserved, buffer, size, offset);
+    prop_copy_uint64 (tkhd->duration, buffer, size, offset);
+  }
+
+  prop_copy_uint32_array (tkhd->reserved2, 2, buffer, size, offset);
+  prop_copy_uint16 (tkhd->layer, buffer, size, offset);
+  prop_copy_uint16 (tkhd->alternate_group, buffer, size, offset);
+  prop_copy_uint16 (tkhd->volume, buffer, size, offset);
+  prop_copy_uint16 (tkhd->reserved3, buffer, size, offset);
+  prop_copy_uint32_array (tkhd->matrix, 9, buffer, size, offset);
+
+  prop_copy_uint32 (tkhd->width, buffer, size, offset);
+  prop_copy_uint32 (tkhd->height, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_hdlr_copy_data (AtomHDLR * hdlr, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&hdlr->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_fourcc (hdlr->component_type, buffer, size, offset);
+  prop_copy_fourcc (hdlr->handler_type, buffer, size, offset);
+  prop_copy_fourcc (hdlr->manufacturer, buffer, size, offset);
+  prop_copy_uint32 (hdlr->flags, buffer, size, offset);
+  prop_copy_uint32 (hdlr->flags_mask, buffer, size, offset);
+
+  prop_copy_null_terminated_string (hdlr->name, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_vmhd_copy_data (AtomVMHD * vmhd, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&vmhd->header, buffer, size, offset)) {
+    return 0;
+  }
+  prop_copy_uint16 (vmhd->graphics_mode, buffer, size, offset);
+  prop_copy_uint16_array (vmhd->opcolor, 3, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return original_offset - *offset;
+}
+
+static guint64
+atom_smhd_copy_data (AtomSMHD * smhd, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&smhd->header, buffer, size, offset)) {
+    return 0;
+  }
+  prop_copy_uint16 (smhd->balance, buffer, size, offset);
+  prop_copy_uint16 (smhd->reserved, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return original_offset - *offset;
+}
+
+static guint64
+atom_hmhd_copy_data (AtomHMHD * hmhd, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&hmhd->header, buffer, size, offset)) {
+    return 0;
+  }
+  prop_copy_uint16 (hmhd->max_pdu_size, buffer, size, offset);
+  prop_copy_uint16 (hmhd->avg_pdu_size, buffer, size, offset);
+  prop_copy_uint32 (hmhd->max_bitrate, buffer, size, offset);
+  prop_copy_uint32 (hmhd->avg_bitrate, buffer, size, offset);
+  prop_copy_uint32 (hmhd->sliding_avg_bitrate, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return original_offset - *offset;
+}
+
+static gboolean
+atom_url_same_file_flag (AtomURL * url)
+{
+  return (url->header.flags[2] & 0x1) == 1;
+}
+
+static guint64
+atom_url_copy_data (AtomURL * url, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&url->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (!atom_url_same_file_flag (url)) {
+    prop_copy_null_terminated_string (url->location, buffer, size, offset);
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return original_offset - *offset;
+}
+
+static guint64
+atom_stts_copy_data (AtomSTTS * stts, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+
+  if (!atom_full_copy_data (&stts->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (stts->n_entries, buffer, size, offset);
+  /* minimize realloc */
+  prop_copy_ensure_buffer (buffer, size, offset, 8 * stts->n_entries);
+  for (walker = g_list_last (stts->entries); walker != NULL;
+      walker = g_list_previous (walker)) {
+    STTSEntry *entry = (STTSEntry *) walker->data;
+
+    prop_copy_uint32 (entry->sample_count, buffer, size, offset);
+    prop_copy_int32 (entry->sample_delta, buffer, size, offset);
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_sample_entry_copy_data (SampleTableEntry * se, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&se->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint8_array (se->reserved, 6, buffer, size, offset);
+  prop_copy_uint16 (se->data_reference_index, buffer, size, offset);
+
+  return *offset - original_offset;
+}
+
+static guint64
+atom_esds_copy_data (AtomESDS * esds, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&esds->header, buffer, size, offset)) {
+    return 0;
+  }
+  if (!desc_es_descriptor_copy_data (&esds->es, buffer, size, offset)) {
+    return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_frma_copy_data (AtomFRMA * frma, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&(frma->header), buffer, size, offset))
+    return 0;
+
+  prop_copy_fourcc (frma->media_type, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_mp4s_copy_data (SampleTableEntryMP4S * mp4s, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_sample_entry_copy_data (&mp4s->se, buffer, size, offset)) {
+    return 0;
+  }
+  if (!atom_esds_copy_data (&mp4s->es, buffer, size, offset)) {
+    return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_hint_sample_entry_copy_data (AtomHintSampleEntry * hse, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_sample_entry_copy_data (&hse->se, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (hse->size, buffer, size, offset);
+  prop_copy_uint8_array (hse->data, hse->size, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+sample_entry_mp4a_copy_data (SampleTableEntryMP4A * mp4a, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_sample_entry_copy_data (&mp4a->se, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint16 (mp4a->version, buffer, size, offset);
+  prop_copy_uint16 (mp4a->revision_level, buffer, size, offset);
+  prop_copy_uint32 (mp4a->vendor, buffer, size, offset);
+  prop_copy_uint16 (mp4a->channels, buffer, size, offset);
+  prop_copy_uint16 (mp4a->sample_size, buffer, size, offset);
+  prop_copy_uint16 (mp4a->compression_id, buffer, size, offset);
+  prop_copy_uint16 (mp4a->packet_size, buffer, size, offset);
+  prop_copy_uint32 (mp4a->sample_rate, buffer, size, offset);
+
+  /* this should always be 0 for mp4 flavor */
+  if (mp4a->version == 1) {
+    prop_copy_uint32 (mp4a->samples_per_packet, buffer, size, offset);
+    prop_copy_uint32 (mp4a->bytes_per_packet, buffer, size, offset);
+    prop_copy_uint32 (mp4a->bytes_per_frame, buffer, size, offset);
+    prop_copy_uint32 (mp4a->bytes_per_sample, buffer, size, offset);
+  }
+
+  if (mp4a->extension_atoms) {
+    if (!atom_info_list_copy_data (mp4a->extension_atoms, buffer, size, offset))
+      return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+sample_entry_mp4v_copy_data (SampleTableEntryMP4V * mp4v, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_sample_entry_copy_data (&mp4v->se, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint16 (mp4v->version, buffer, size, offset);
+  prop_copy_uint16 (mp4v->revision_level, buffer, size, offset);
+  prop_copy_fourcc (mp4v->vendor, buffer, size, offset);
+  prop_copy_uint32 (mp4v->temporal_quality, buffer, size, offset);
+  prop_copy_uint32 (mp4v->spatial_quality, buffer, size, offset);
+
+  prop_copy_uint16 (mp4v->width, buffer, size, offset);
+  prop_copy_uint16 (mp4v->height, buffer, size, offset);
+
+  prop_copy_uint32 (mp4v->horizontal_resolution, buffer, size, offset);
+  prop_copy_uint32 (mp4v->vertical_resolution, buffer, size, offset);
+  prop_copy_uint32 (mp4v->datasize, buffer, size, offset);
+
+  prop_copy_uint16 (mp4v->frame_count, buffer, size, offset);
+
+  prop_copy_fixed_size_string ((guint8 *) mp4v->compressor, 32, buffer, size,
+      offset);
+
+  prop_copy_uint16 (mp4v->depth, buffer, size, offset);
+  prop_copy_uint16 (mp4v->color_table_id, buffer, size, offset);
+
+  /* extra atoms */
+  if (mp4v->extension_atoms &&
+      !atom_info_list_copy_data (mp4v->extension_atoms, buffer, size, offset))
+    return 0;
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_stsz_copy_data (AtomSTSZ * stsz, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+
+  if (!atom_full_copy_data (&stsz->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (stsz->sample_size, buffer, size, offset);
+  prop_copy_uint32 (stsz->table_size, buffer, size, offset);
+  /* minimize realloc */
+  prop_copy_ensure_buffer (buffer, size, offset, 4 * stsz->table_size);
+  if (stsz->sample_size == 0) {
+    for (walker = g_list_last (stsz->entries); walker != NULL;
+        walker = g_list_previous (walker)) {
+      prop_copy_uint32 ((guint32) GPOINTER_TO_UINT (walker->data), buffer, size,
+          offset);
+    }
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_stsc_copy_data (AtomSTSC * stsc, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+
+  if (!atom_full_copy_data (&stsc->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (stsc->n_entries, buffer, size, offset);
+  /* minimize realloc */
+  prop_copy_ensure_buffer (buffer, size, offset, 12 * stsc->n_entries);
+
+  for (walker = g_list_last (stsc->entries); walker != NULL;
+      walker = g_list_previous (walker)) {
+    STSCEntry *entry = (STSCEntry *) walker->data;
+
+    prop_copy_uint32 (entry->first_chunk, buffer, size, offset);
+    prop_copy_uint32 (entry->samples_per_chunk, buffer, size, offset);
+    prop_copy_uint32 (entry->sample_description_index, buffer, size, offset);
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_ctts_copy_data (AtomCTTS * ctts, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+
+  if (!atom_full_copy_data (&ctts->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (ctts->n_entries, buffer, size, offset);
+  /* minimize realloc */
+  prop_copy_ensure_buffer (buffer, size, offset, 8 * ctts->n_entries);
+  for (walker = g_list_last (ctts->entries); walker != NULL;
+      walker = g_list_previous (walker)) {
+    CTTSEntry *entry = (CTTSEntry *) walker->data;
+
+    prop_copy_uint32 (entry->samplecount, buffer, size, offset);
+    prop_copy_uint32 (entry->sampleoffset, buffer, size, offset);
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_stco64_copy_data (AtomSTCO64 * stco64, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+  gboolean trunc_to_32 = stco64->header.header.type == FOURCC_stco;
+
+  if (!atom_full_copy_data (&stco64->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (stco64->n_entries, buffer, size, offset);
+
+  /* minimize realloc */
+  prop_copy_ensure_buffer (buffer, size, offset, 8 * stco64->n_entries);
+  for (walker = g_list_last (stco64->entries); walker != NULL;
+      walker = g_list_previous (walker)) {
+    guint64 *value = (guint64 *) walker->data;
+
+    if (trunc_to_32) {
+      prop_copy_uint32 ((guint32) * value, buffer, size, offset);
+    } else {
+      prop_copy_uint64 (*value, buffer, size, offset);
+    }
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_stss_copy_data (AtomSTSS * stss, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+
+  if (stss->entries == NULL) {
+    /* FIXME not needing this atom might be confused with error while copying */
+    return 0;
+  }
+
+  if (!atom_full_copy_data (&stss->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (stss->n_entries, buffer, size, offset);
+  /* minimize realloc */
+  prop_copy_ensure_buffer (buffer, size, offset, 4 * stss->n_entries);
+  for (walker = g_list_last (stss->entries); walker != NULL;
+      walker = g_list_previous (walker)) {
+    prop_copy_uint32 ((guint32) GPOINTER_TO_UINT (walker->data), buffer, size,
+        offset);
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_stsd_copy_data (AtomSTSD * stsd, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+
+  if (!atom_full_copy_data (&stsd->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (stsd->n_entries, buffer, size, offset);
+
+  for (walker = g_list_last (stsd->entries); walker != NULL;
+      walker = g_list_previous (walker)) {
+    SampleTableEntry *se = (SampleTableEntry *) walker->data;
+
+    switch (((Atom *) walker->data)->type) {
+      case FOURCC_mp4a:
+        if (!sample_entry_mp4a_copy_data ((SampleTableEntryMP4A *) walker->data,
+                buffer, size, offset)) {
+          return 0;
+        }
+        break;
+      case FOURCC_mp4s:
+        if (!atom_mp4s_copy_data ((SampleTableEntryMP4S *) walker->data,
+                buffer, size, offset)) {
+          return 0;
+        }
+        break;
+      case FOURCC_mp4v:
+        if (!sample_entry_mp4v_copy_data ((SampleTableEntryMP4V *) walker->data,
+                buffer, size, offset)) {
+          return 0;
+        }
+        break;
+      default:
+        if (se->kind == VIDEO) {
+          size +=
+              sample_entry_mp4v_copy_data ((SampleTableEntryMP4V *) walker->
+              data, buffer, size, offset);
+        } else if (se->kind == AUDIO) {
+          size +=
+              sample_entry_mp4a_copy_data ((SampleTableEntryMP4A *) walker->
+              data, buffer, size, offset);
+        } else {
+          if (!atom_hint_sample_entry_copy_data (
+                  (AtomHintSampleEntry *) walker->data, buffer, size, offset)) {
+            return 0;
+          }
+        }
+        break;
+    }
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_stbl_copy_data (AtomSTBL * stbl, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&stbl->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (!atom_stsd_copy_data (&stbl->stsd, buffer, size, offset)) {
+    return 0;
+  }
+  if (!atom_stts_copy_data (&stbl->stts, buffer, size, offset)) {
+    return 0;
+  }
+  /* this atom is optional, so let's check if we need it
+   * (to avoid false error) */
+  if (stbl->stss.entries) {
+    if (!atom_stss_copy_data (&stbl->stss, buffer, size, offset)) {
+      return 0;
+    }
+  }
+
+  if (!atom_stsc_copy_data (&stbl->stsc, buffer, size, offset)) {
+    return 0;
+  }
+  if (!atom_stsz_copy_data (&stbl->stsz, buffer, size, offset)) {
+    return 0;
+  }
+  if (stbl->ctts) {
+    if (!atom_ctts_copy_data (stbl->ctts, buffer, size, offset)) {
+      return 0;
+    }
+  }
+  if (!atom_stco64_copy_data (&stbl->stco64, buffer, size, offset)) {
+    return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return original_offset - *offset;
+}
+
+
+static guint64
+atom_dref_copy_data (AtomDREF * dref, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+
+  if (!atom_full_copy_data (&dref->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (g_list_length (dref->entries), buffer, size, offset);
+
+  walker = dref->entries;
+  while (walker != NULL) {
+    Atom *atom = (Atom *) walker->data;
+
+    if (atom->type == FOURCC_url_) {
+      atom_url_copy_data ((AtomURL *) atom, buffer, size, offset);
+    } else if (atom->type == FOURCC_alis) {
+      atom_full_copy_data ((AtomFull *) atom, buffer, size, offset);
+    } else {
+      g_error ("Unsupported atom used inside dref atom");
+    }
+    walker = g_list_next (walker);
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_dinf_copy_data (AtomDINF * dinf, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&dinf->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (!atom_dref_copy_data (&dinf->dref, buffer, size, offset)) {
+    return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return original_offset - *offset;
+}
+
+static guint64
+atom_minf_copy_data (AtomMINF * minf, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&minf->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (minf->vmhd) {
+    if (!atom_vmhd_copy_data (minf->vmhd, buffer, size, offset)) {
+      return 0;
+    }
+  } else if (minf->smhd) {
+    if (!atom_smhd_copy_data (minf->smhd, buffer, size, offset)) {
+      return 0;
+    }
+  } else if (minf->hmhd) {
+    if (!atom_hmhd_copy_data (minf->hmhd, buffer, size, offset)) {
+      return 0;
+    }
+  }
+
+  if (minf->hdlr) {
+    if (!atom_hdlr_copy_data (minf->hdlr, buffer, size, offset)) {
+      return 0;
+    }
+  }
+
+  if (!atom_dinf_copy_data (&minf->dinf, buffer, size, offset)) {
+    return 0;
+  }
+  if (!atom_stbl_copy_data (&minf->stbl, buffer, size, offset)) {
+    return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_mdhd_copy_data (AtomMDHD * mdhd, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&mdhd->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (!common_time_info_copy_data (&mdhd->time_info,
+          atom_full_get_version (&mdhd->header) == 0, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint16 (mdhd->language_code, buffer, size, offset);
+  prop_copy_uint16 (mdhd->quality, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_mdia_copy_data (AtomMDIA * mdia, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&mdia->header, buffer, size, offset)) {
+    return 0;
+  }
+  if (!atom_mdhd_copy_data (&mdia->mdhd, buffer, size, offset)) {
+    return 0;
+  }
+  if (!atom_hdlr_copy_data (&mdia->hdlr, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (!atom_minf_copy_data (&mdia->minf, buffer, size, offset)) {
+    return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_trak_copy_data (AtomTRAK * trak, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&trak->header, buffer, size, offset)) {
+    return 0;
+  }
+  if (!atom_tkhd_copy_data (&trak->tkhd, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (!atom_mdia_copy_data (&trak->mdia, buffer, size, offset)) {
+    return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_tag_data_copy_data (AtomTagData * data, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&data->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint32 (data->reserved, buffer, size, offset);
+  prop_copy_uint8_array (data->data, data->datalen, buffer, size, offset);
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_tag_copy_data (AtomTag * tag, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&tag->header, buffer, size, offset)) {
+    return 0;
+  }
+
+  if (!atom_tag_data_copy_data (&tag->data, buffer, size, offset)) {
+    return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_ilst_copy_data (AtomILST * ilst, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&ilst->header, buffer, size, offset)) {
+    return 0;
+  }
+  /* extra atoms */
+  if (ilst->entries &&
+      !atom_info_list_copy_data (ilst->entries, buffer, size, offset))
+    return 0;
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_meta_copy_data (AtomMETA * meta, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_full_copy_data (&meta->header, buffer, size, offset)) {
+    return 0;
+  }
+  if (!atom_hdlr_copy_data (&meta->hdlr, buffer, size, offset)) {
+    return 0;
+  }
+  if (meta->ilst) {
+    if (!atom_ilst_copy_data (meta->ilst, buffer, size, offset)) {
+      return 0;
+    }
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_udta_copy_data (AtomUDTA * udta, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&udta->header, buffer, size, offset)) {
+    return 0;
+  }
+  if (udta->meta) {
+    if (!atom_meta_copy_data (udta->meta, buffer, size, offset)) {
+      return 0;
+    }
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+guint64
+atom_moov_copy_data (AtomMOOV * atom, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  GList *walker;
+
+  if (!atom_copy_data (&(atom->header), buffer, size, offset))
+    return 0;
+
+  if (!atom_mvhd_copy_data (&(atom->mvhd), buffer, size, offset))
+    return 0;
+
+  walker = g_list_first (atom->traks);
+  while (walker != NULL) {
+    if (!atom_trak_copy_data ((AtomTRAK *) walker->data, buffer, size, offset)) {
+      return 0;
+    }
+    walker = g_list_next (walker);
+  }
+
+  if (atom->udta) {
+    if (!atom_udta_copy_data (atom->udta, buffer, size, offset)) {
+      return 0;
+    }
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+static guint64
+atom_wave_copy_data (AtomWAVE * wave, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!atom_copy_data (&(wave->header), buffer, size, offset))
+    return 0;
+
+  if (wave->extension_atoms) {
+    if (!atom_info_list_copy_data (wave->extension_atoms, buffer, size, offset))
+      return 0;
+  }
+
+  atom_write_size (buffer, size, offset, original_offset);
+  return *offset - original_offset;
+}
+
+/* -- end of copy data functions -- */
+
+/* -- general functions, API and support functions */
+
+/* add samples to tables */
+
+static STSCEntry *
+stsc_entry_new (guint32 first_chunk, guint32 samples, guint32 desc_index)
+{
+  STSCEntry *entry = g_new0 (STSCEntry, 1);
+
+  entry->first_chunk = first_chunk;
+  entry->samples_per_chunk = samples;
+  entry->sample_description_index = desc_index;
+  return entry;
+}
+
+static void
+atom_stsc_add_new_entry (AtomSTSC * stsc, guint32 first_chunk, guint32 nsamples)
+{
+  stsc->entries =
+      g_list_prepend (stsc->entries, stsc_entry_new (first_chunk, nsamples, 1));
+  stsc->n_entries++;
+}
+
+static STTSEntry *
+stts_entry_new (guint32 sample_count, gint32 sample_delta)
+{
+  STTSEntry *entry = g_new0 (STTSEntry, 1);
+
+  entry->sample_count = sample_count;
+  entry->sample_delta = sample_delta;
+  return entry;
+}
+
+static void
+atom_stts_add_entry (AtomSTTS * stts, guint32 sample_count, gint32 sample_delta)
+{
+  STTSEntry *entry;
+
+  if (stts->entries == NULL) {
+    stts->entries =
+        g_list_prepend (stts->entries, stts_entry_new (sample_count,
+            sample_delta));
+    stts->n_entries++;
+    return;
+  }
+  entry = (STTSEntry *) g_list_first (stts->entries)->data;
+  if (entry->sample_delta == sample_delta) {
+    entry->sample_count += sample_count;
+  } else {
+    stts->entries =
+        g_list_prepend (stts->entries, stts_entry_new (sample_count,
+            sample_delta));
+    stts->n_entries++;
+  }
+}
+
+static void
+atom_stsz_add_entry (AtomSTSZ * stsz, guint32 nsamples, guint32 size)
+{
+  guint32 i;
+
+  stsz->table_size += nsamples;
+  if (stsz->sample_size != 0) {
+    /* it is constant size, we don't need entries */
+    return;
+  }
+  for (i = 0; i < nsamples; i++) {
+    stsz->entries = g_list_prepend (stsz->entries, GUINT_TO_POINTER (size));
+  }
+}
+
+static guint32
+atom_stco64_get_entry_count (AtomSTCO64 * stco64)
+{
+  return stco64->n_entries;
+}
+
+static void
+atom_stco64_add_entry (AtomSTCO64 * stco64, guint64 entry)
+{
+  guint64 *pont = g_new (guint64, 1);
+
+  *pont = entry;
+  stco64->entries = g_list_prepend (stco64->entries, pont);
+  stco64->n_entries++;
+}
+
+static void
+atom_stss_add_entry (AtomSTSS * stss, guint32 sample)
+{
+  stss->entries = g_list_prepend (stss->entries, GUINT_TO_POINTER (sample));
+  stss->n_entries++;
+}
+
+static void
+atom_stbl_add_stss_entry (AtomSTBL * stbl)
+{
+  guint32 sample_index = stbl->stsz.table_size;
+
+  atom_stss_add_entry (&stbl->stss, sample_index);
+}
+
+static void
+atom_ctts_add_entry (AtomCTTS * ctts, guint32 nsamples, guint32 offset)
+{
+  GList *walker;
+  CTTSEntry *entry;
+
+  walker = g_list_first (ctts->entries);
+  entry = (walker == NULL) ? NULL : (CTTSEntry *) walker->data;
+
+  if (entry == NULL || entry->sampleoffset != offset) {
+    CTTSEntry *entry = g_new0 (CTTSEntry, 1);
+
+    entry->samplecount = nsamples;
+    entry->sampleoffset = offset;
+    ctts->entries = g_list_prepend (ctts->entries, entry);
+    ctts->n_entries++;
+  } else {
+    entry->samplecount += nsamples;
+  }
+}
+
+static void
+atom_stbl_add_ctts_entry (AtomSTBL * stbl, guint32 nsamples, guint32 offset)
+{
+  if (stbl->ctts == NULL) {
+    stbl->ctts = atom_ctts_new ();
+  }
+  atom_ctts_add_entry (stbl->ctts, nsamples, offset);
+}
+
+void
+atom_trak_add_samples (AtomTRAK * trak, guint32 nsamples, guint32 delta,
+    guint32 size, guint64 chunk_offset, gboolean sync,
+    gboolean do_pts, gint64 pts_offset)
+{
+  AtomSTBL *stbl = &trak->mdia.minf.stbl;
+
+  atom_stts_add_entry (&stbl->stts, nsamples, delta);
+  atom_stsz_add_entry (&stbl->stsz, nsamples, size);
+  atom_stco64_add_entry (&stbl->stco64, chunk_offset);
+  atom_stsc_add_new_entry (&stbl->stsc,
+      atom_stco64_get_entry_count (&stbl->stco64), nsamples);
+  if (sync)
+    atom_stbl_add_stss_entry (stbl);
+  if (do_pts)
+    atom_stbl_add_ctts_entry (stbl, nsamples, pts_offset);
+}
+
+/* trak and moov molding */
+
+guint32
+atom_trak_get_timescale (AtomTRAK * trak)
+{
+  return trak->mdia.mdhd.time_info.timescale;
+}
+
+static void
+atom_trak_set_id (AtomTRAK * trak, guint32 id)
+{
+  trak->tkhd.track_ID = id;
+}
+
+void
+atom_moov_add_trak (AtomMOOV * moov, AtomTRAK * trak)
+{
+  atom_trak_set_id (trak, moov->mvhd.next_track_id++);
+  moov->traks = g_list_append (moov->traks, trak);
+}
+
+static guint64
+atom_trak_get_duration (AtomTRAK * trak)
+{
+  return trak->tkhd.duration;
+}
+
+static guint64
+atom_stts_get_total_duration (AtomSTTS * stts)
+{
+  GList *walker = stts->entries;
+  guint64 sum = 0;
+
+  while (walker) {
+    STTSEntry *entry = (STTSEntry *) walker->data;
+
+    sum += (guint64) (entry->sample_count) * entry->sample_delta;
+    walker = g_list_next (walker);
+  }
+  return sum;
+}
+
+static void
+atom_trak_update_duration (AtomTRAK * trak, guint64 moov_timescale)
+{
+  trak->mdia.mdhd.time_info.duration =
+      atom_stts_get_total_duration (&trak->mdia.minf.stbl.stts);
+  trak->tkhd.duration =
+      gst_util_uint64_scale (trak->mdia.mdhd.time_info.duration, moov_timescale,
+      trak->mdia.mdhd.time_info.timescale);
+}
+
+static guint32
+atom_moov_get_timescale (AtomMOOV * moov)
+{
+  return moov->mvhd.time_info.timescale;
+}
+
+void
+atom_moov_update_timescale (AtomMOOV * moov, guint32 timescale)
+{
+  moov->mvhd.time_info.timescale = timescale;
+}
+
+void
+atom_moov_update_duration (AtomMOOV * moov)
+{
+  GList *traks = moov->traks;
+  guint64 dur, duration = 0;
+
+  while (traks) {
+    AtomTRAK *trak = (AtomTRAK *) traks->data;
+
+    atom_trak_update_duration (trak, atom_moov_get_timescale (moov));
+    dur = atom_trak_get_duration (trak);
+    if (dur > duration)
+      duration = dur;
+    traks = g_list_next (traks);
+  }
+  moov->mvhd.time_info.duration = duration;
+}
+
+static void
+atom_set_type (Atom * atom, guint32 fourcc)
+{
+  atom->type = fourcc;
+}
+
+static void
+atom_stbl_set_64bits (AtomSTBL * stbl, gboolean use)
+{
+  if (use) {
+    atom_set_type (&stbl->stco64.header.header, FOURCC_co64);
+  } else {
+    atom_set_type (&stbl->stco64.header.header, FOURCC_stco);
+  }
+}
+
+static void
+atom_trak_set_64bits (AtomTRAK * trak, gboolean use)
+{
+  atom_stbl_set_64bits (&trak->mdia.minf.stbl, use);
+}
+
+void
+atom_moov_set_64bits (AtomMOOV * moov, gboolean large_file)
+{
+  GList *traks = moov->traks;
+
+  while (traks) {
+    AtomTRAK *trak = (AtomTRAK *) traks->data;
+
+    atom_trak_set_64bits (trak, large_file);
+    traks = g_list_next (traks);
+  }
+}
+
+static void
+atom_stco64_chunks_add_offset (AtomSTCO64 * stco64, guint32 offset)
+{
+  GList *entries = stco64->entries;
+
+  while (entries) {
+    guint64 *value = (guint64 *) entries->data;
+
+    *value += offset;
+    entries = g_list_next (entries);
+  }
+}
+
+void
+atom_moov_chunks_add_offset (AtomMOOV * moov, guint32 offset)
+{
+  GList *traks = moov->traks;
+
+  while (traks) {
+    AtomTRAK *trak = (AtomTRAK *) traks->data;
+
+    atom_stco64_chunks_add_offset (&trak->mdia.minf.stbl.stco64, offset);
+    traks = g_list_next (traks);
+  }
+}
+
+/*
+ * Meta tags functions
+ */
+static void
+atom_moov_init_metatags (AtomMOOV * moov)
+{
+  if (!moov->udta) {
+    moov->udta = atom_udta_new ();
+  }
+  if (!moov->udta->meta) {
+    moov->udta->meta = atom_meta_new ();
+  }
+  if (!moov->udta->meta->ilst) {
+    moov->udta->meta->ilst = atom_ilst_new ();
+  }
+}
+
+static void
+atom_tag_data_alloc_data (AtomTagData * data, guint size)
+{
+  if (data->data != NULL) {
+    g_free (data->data);
+  }
+  data->data = g_new0 (guint8, size);
+  data->datalen = size;
+}
+
+static void
+atom_moov_append_tag (AtomMOOV * moov, AtomInfo * tag)
+{
+  AtomILST *ilst;
+
+  ilst = moov->udta->meta->ilst;
+  ilst->entries = g_list_append (ilst->entries, tag);
+}
+
+void
+atom_moov_add_tag (AtomMOOV * moov, guint32 fourcc, guint32 flags,
+    const guint8 * data, guint size)
+{
+  AtomTag *tag;
+  AtomTagData *tdata;
+
+  tag = atom_tag_new (fourcc, flags);
+  tdata = &tag->data;
+  atom_tag_data_alloc_data (tdata, size);
+  g_memmove (tdata->data, data, size);
+
+  atom_moov_init_metatags (moov);
+  atom_moov_append_tag (moov,
+      build_atom_info_wrapper ((Atom *) tag, atom_tag_copy_data,
+          atom_tag_free));
+}
+
+void
+atom_moov_add_str_tag (AtomMOOV * moov, guint32 fourcc, const gchar * value)
+{
+  gint len = strlen (value);
+
+  if (len > 0)
+    atom_moov_add_tag (moov, fourcc, METADATA_TEXT_FLAG, (guint8 *) value, len);
+}
+
+void
+atom_moov_add_uint_tag (AtomMOOV * moov, guint32 fourcc, guint32 flags,
+    guint32 value)
+{
+  guint8 data[8] = { 0, };
+
+  if (flags) {
+    GST_WRITE_UINT16_BE (data, value);
+    atom_moov_add_tag (moov, fourcc, flags, data, 2);
+  } else {
+    GST_WRITE_UINT32_BE (data + 2, value);
+    atom_moov_add_tag (moov, fourcc, flags, data, 8);
+  }
+}
+
+void
+atom_moov_add_blob_tag (AtomMOOV * moov, guint8 * data, guint size)
+{
+  AtomData *data_atom;
+  GstBuffer *buf;
+  guint len;
+  guint32 fourcc;
+
+  if (size < 8)
+    return;
+
+  /* blob is unparsed atom;
+   * extract size and fourcc, and wrap remainder in data atom */
+  len = GST_READ_UINT32_BE (data);
+  fourcc = GST_READ_UINT32_LE (data + 4);
+  if (len > size)
+    return;
+
+  buf = gst_buffer_new ();
+  GST_BUFFER_SIZE (buf) = len - 8;
+  GST_BUFFER_DATA (buf) = data + 8;
+
+  data_atom = atom_data_new_from_gst_buffer (fourcc, buf);
+  gst_buffer_unref (buf);
+
+  atom_moov_append_tag (moov,
+      build_atom_info_wrapper ((Atom *) data_atom, atom_data_copy_data,
+          atom_data_free));
+}
+
+/*
+ * Functions for specifying media types
+ */
+
+static void
+atom_minf_set_audio (AtomMINF * minf)
+{
+  atom_minf_clear_handlers (minf);
+  minf->smhd = atom_smhd_new ();
+}
+
+static void
+atom_minf_set_video (AtomMINF * minf, AtomsContext * context)
+{
+  atom_minf_clear_handlers (minf);
+  minf->vmhd = atom_vmhd_new (context);
+}
+
+static void
+atom_hdlr_set_type (AtomHDLR * hdlr, AtomsContext * context, guint32 comp_type,
+    guint32 hdlr_type)
+{
+  if (context->flavor == ATOMS_TREE_FLAVOR_MOV) {
+    hdlr->component_type = comp_type;
+  }
+  hdlr->handler_type = hdlr_type;
+}
+
+static void
+atom_mdia_set_hdlr_type_audio (AtomMDIA * mdia, AtomsContext * context)
+{
+  atom_hdlr_set_type (&mdia->hdlr, context, FOURCC_mhlr, FOURCC_soun);
+}
+
+static void
+atom_mdia_set_hdlr_type_video (AtomMDIA * mdia, AtomsContext * context)
+{
+  atom_hdlr_set_type (&mdia->hdlr, context, FOURCC_mhlr, FOURCC_vide);
+}
+
+static void
+atom_mdia_set_audio (AtomMDIA * mdia, AtomsContext * context)
+{
+  atom_mdia_set_hdlr_type_audio (mdia, context);
+  atom_minf_set_audio (&mdia->minf);
+}
+
+static void
+atom_mdia_set_video (AtomMDIA * mdia, AtomsContext * context)
+{
+  atom_mdia_set_hdlr_type_video (mdia, context);
+  atom_minf_set_video (&mdia->minf, context);
+}
+
+static void
+atom_tkhd_set_audio (AtomTKHD * tkhd)
+{
+  tkhd->volume = 0x0100;
+  tkhd->width = tkhd->height = 0;
+}
+
+static void
+atom_tkhd_set_video (AtomTKHD * tkhd, AtomsContext * context, guint32 width,
+    guint32 height)
+{
+  tkhd->volume = 0;
+
+  /* qt and ISO base media do not contradict, and examples agree */
+  tkhd->width = width;
+  tkhd->height = height;
+}
+
+/* re-negotiation is prevented at top-level, so only 1 entry expected.
+ * Quite some more care here and elsewhere may be needed to
+ * support several entries */
+static SampleTableEntryMP4A *
+atom_trak_add_audio_entry (AtomTRAK * trak, AtomsContext * context,
+    guint32 type)
+{
+  AtomSTSD *stsd = &trak->mdia.minf.stbl.stsd;
+  SampleTableEntryMP4A *mp4a = sample_entry_mp4a_new ();
+
+  mp4a->se.header.type = type;
+  mp4a->se.kind = AUDIO;
+  mp4a->compression_id = -1;
+  mp4a->se.data_reference_index = 1;
+
+  stsd->entries = g_list_prepend (stsd->entries, mp4a);
+  stsd->n_entries++;
+  return mp4a;
+}
+
+static SampleTableEntryMP4V *
+atom_trak_add_video_entry (AtomTRAK * trak, AtomsContext * context,
+    guint32 type)
+{
+  SampleTableEntryMP4V *mp4v = sample_entry_mp4v_new (context);
+  AtomSTSD *stsd = &trak->mdia.minf.stbl.stsd;
+
+  mp4v->se.header.type = type;
+  mp4v->se.kind = VIDEO;
+  mp4v->se.data_reference_index = 1;
+  mp4v->horizontal_resolution = 72 << 16;
+  mp4v->vertical_resolution = 72 << 16;
+  if (context->flavor == ATOMS_TREE_FLAVOR_MOV) {
+    mp4v->spatial_quality = 512;
+    mp4v->temporal_quality = 512;
+  }
+
+  stsd->entries = g_list_prepend (stsd->entries, mp4v);
+  stsd->n_entries++;
+  return mp4v;
+}
+
+static void
+atom_trak_set_constant_size_samples (AtomTRAK * trak, guint32 sample_size)
+{
+  trak->mdia.minf.stbl.stsz.sample_size = sample_size;
+}
+
+static void
+atom_trak_set_audio (AtomTRAK * trak, AtomsContext * context)
+{
+  atom_tkhd_set_audio (&trak->tkhd);
+  atom_mdia_set_audio (&trak->mdia, context);
+}
+
+static void
+atom_trak_set_video (AtomTRAK * trak, AtomsContext * context, guint32 width,
+    guint32 height)
+{
+  atom_tkhd_set_video (&trak->tkhd, context, width, height);
+  atom_mdia_set_video (&trak->mdia, context);
+}
+
+static void
+atom_trak_set_audio_commons (AtomTRAK * trak, AtomsContext * context,
+    guint32 rate)
+{
+  atom_trak_set_audio (trak, context);
+  trak->mdia.mdhd.time_info.timescale = rate;
+}
+
+static void
+atom_trak_set_video_commons (AtomTRAK * trak, AtomsContext * context,
+    guint32 rate, guint32 width, guint32 height)
+{
+  atom_trak_set_video (trak, context, width, height);
+  trak->mdia.mdhd.time_info.timescale = rate;
+  trak->tkhd.width = width << 16;
+  trak->tkhd.height = height << 16;
+}
+
+void
+atom_trak_set_audio_type (AtomTRAK * trak, AtomsContext * context,
+    AudioSampleEntry * entry, guint32 scale, AtomInfo * ext, gint sample_size)
+{
+  SampleTableEntryMP4A *ste;
+
+  atom_trak_set_audio_commons (trak, context, scale);
+  ste = atom_trak_add_audio_entry (trak, context, entry->fourcc);
+
+  ste->version = entry->version;
+  ste->compression_id = entry->compression_id;
+  ste->sample_size = entry->sample_size;
+  ste->sample_rate = entry->sample_rate << 16;
+  ste->channels = entry->channels;
+
+  ste->samples_per_packet = entry->samples_per_packet;
+  ste->bytes_per_sample = entry->bytes_per_sample;
+  ste->bytes_per_packet = entry->bytes_per_packet;
+  ste->bytes_per_frame = entry->bytes_per_frame;
+
+  if (ext)
+    ste->extension_atoms = g_list_prepend (ste->extension_atoms, ext);
+
+  /* 0 size means variable size */
+  atom_trak_set_constant_size_samples (trak, sample_size);
+}
+
+void
+atom_trak_set_video_type (AtomTRAK * trak, AtomsContext * context,
+    VisualSampleEntry * entry, guint32 scale, AtomInfo * ext)
+{
+  SampleTableEntryMP4V *ste;
+
+  atom_trak_set_video_commons (trak, context, scale, entry->width,
+      entry->height);
+  ste = atom_trak_add_video_entry (trak, context, entry->fourcc);
+
+  ste->width = entry->width;
+  ste->height = entry->height;
+  ste->depth = entry->depth;
+  ste->color_table_id = entry->color_table_id;
+  ste->frame_count = entry->frame_count;
+
+  if (ext)
+    ste->extension_atoms = g_list_prepend (ste->extension_atoms, ext);
+}
+
+/* some sample description construction helpers */
+
+static AtomInfo *
+build_esds_atom (guint32 track_id, guint8 object_type, guint8 stream_type,
+    const GstBuffer * codec_data)
+{
+  AtomESDS *esds;
+
+  esds = atom_esds_new ();
+  esds->es.id = track_id & 0xFFFF;
+  esds->es.dec_conf_desc.object_type = object_type;
+  esds->es.dec_conf_desc.stream_type = stream_type << 2 | 0x01;
+
+  /* optional DecoderSpecificInfo */
+  if (codec_data) {
+    DecoderSpecificInfoDescriptor *desc;
+
+    esds->es.dec_conf_desc.dec_specific_info = desc =
+        desc_dec_specific_info_new ();
+    desc_dec_specific_info_alloc_data (desc, GST_BUFFER_SIZE (codec_data));
+
+    memcpy (desc->data, GST_BUFFER_DATA (codec_data),
+        GST_BUFFER_SIZE (codec_data));
+  }
+
+  return build_atom_info_wrapper ((Atom *) esds, atom_esds_copy_data,
+      atom_esds_free);
+}
+
+static AtomInfo *
+build_mov_aac_extension (guint32 track_id, const GstBuffer * codec_data)
+{
+  AtomWAVE *wave;
+  AtomFRMA *frma;
+  Atom *ext_atom;
+  GstBuffer *buf;
+
+  /* Add WAVE atom to the MP4A sample table entry */
+  wave = atom_wave_new ();
+
+  /* Prepend Terminator atom to the WAVE list first, so it ends up last */
+  ext_atom = (Atom *) atom_data_new (FOURCC_null);
+  wave->extension_atoms =
+      atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) ext_atom,
+      (AtomCopyDataFunc) atom_data_copy_data, (AtomFreeFunc) atom_data_free);
+
+  /* Add ESDS atom to WAVE */
+  wave->extension_atoms = g_list_prepend (wave->extension_atoms,
+      build_esds_atom (track_id, ESDS_OBJECT_TYPE_MPEG4_P3,
+          ESDS_STREAM_TYPE_AUDIO, codec_data));
+
+  /* Add MP4A atom to the WAVE:
+   * not really in spec, but makes offset based players happy */
+  buf = gst_buffer_new_and_alloc (4);
+  *((guint32 *) GST_BUFFER_DATA (buf)) = 0;
+  ext_atom = (Atom *) atom_data_new_from_gst_buffer (FOURCC_mp4a, buf);
+  gst_buffer_unref (buf);
+
+  wave->extension_atoms =
+      atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) ext_atom,
+      (AtomCopyDataFunc) atom_data_copy_data, (AtomFreeFunc) atom_data_free);
+
+  /* Add FRMA to the WAVE */
+  frma = atom_frma_new ();
+  frma->media_type = FOURCC_mp4a;
+
+  wave->extension_atoms =
+      atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) frma,
+      (AtomCopyDataFunc) atom_frma_copy_data, (AtomFreeFunc) atom_frma_free);
+
+  return build_atom_info_wrapper ((Atom *) wave, atom_wave_copy_data,
+      atom_wave_free);
+}
+
+/* if applicable, construct Sample Table Entry extension atoms for a trak,
+ * typically wrapping codec data;
+ * for the given flavor of the format, fourcc type of the sample entry,
+ * and in case of MP4 covered streams, the ESDS type */
+AtomInfo *
+build_sample_entry_extension (AtomTRAK * trak, AtomsTreeFlavor flavor,
+    guint32 fourcc, guint esds_type, const GstBuffer * codec_data)
+{
+  AtomInfo *result = NULL;
+  guint32 ext_fourcc = 0;
+  guint32 track_id;
+
+  g_return_val_if_fail (trak != NULL, NULL);
+  track_id = trak->tkhd.track_ID;
+
+  /* extension varies depending on format */
+  if (flavor == ATOMS_TREE_FLAVOR_ISOM) {
+    guint8 stream_type = 0;
+
+    if (fourcc == FOURCC_mp4a)
+      stream_type = ESDS_STREAM_TYPE_AUDIO;
+    else if (fourcc == FOURCC_mp4v)
+      stream_type = ESDS_STREAM_TYPE_VISUAL;
+    if (stream_type)
+      result = build_esds_atom (track_id, esds_type, stream_type, codec_data);
+  } else {
+    switch (fourcc) {
+      case FOURCC_mp4a:
+        if (esds_type != ESDS_OBJECT_TYPE_MPEG1_P3) {
+          result = build_mov_aac_extension (track_id, codec_data);
+        }
+        break;
+      case FOURCC_mp4v:
+      {
+        guint8 stream_type = ESDS_STREAM_TYPE_VISUAL;
+
+        result = build_esds_atom (track_id, esds_type, stream_type, codec_data);
+        break;
+      }
+    }
+  }
+
+  /* stable extension across format (or only relevant for particular format) */
+  switch (fourcc) {
+    case FOURCC_avc1:
+      ext_fourcc = FOURCC_avcC;
+      break;
+  }
+
+  /* simply wrap codec data in some atom */
+  if (ext_fourcc && codec_data) {
+    AtomData *data;
+
+    data = atom_data_new_from_gst_buffer (ext_fourcc, codec_data);
+    result = build_atom_info_wrapper ((Atom *) data, atom_data_copy_data,
+        atom_data_free);
+  }
+
+  return result;
+}
diff --git a/gst/qtmux/atoms.h b/gst/qtmux/atoms.h
new file mode 100644
index 00000000..f469abc1
--- /dev/null
+++ b/gst/qtmux/atoms.h
@@ -0,0 +1,620 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __ATOMS_H__
+#define __ATOMS_H__
+
+#include <glib.h>
+#include <string.h>
+
+#include "descriptors.h"
+#include "properties.h"
+#include "fourcc.h"
+#include "ftypcc.h"
+
+/* light-weight context that may influence header atom tree construction */
+typedef enum _AtomsTreeFlavor
+{
+  ATOMS_TREE_FLAVOR_MOV,
+  ATOMS_TREE_FLAVOR_ISOM
+} AtomsTreeFlavor;
+
+typedef struct _AtomsContext
+{
+  AtomsTreeFlavor flavor;
+} AtomsContext;
+
+AtomsContext* atoms_context_new  (AtomsTreeFlavor flavor);
+void          atoms_context_free (AtomsContext *context);
+
+#define METADATA_DATA_FLAG 0x0
+#define METADATA_TEXT_FLAG 0x1
+
+/* atom defs and functions */
+
+/**
+ * Used for storing time related values for some atoms.
+ */
+typedef struct _TimeInfo
+{
+  guint64 creation_time;
+  guint64 modification_time;
+  guint32 timescale;
+  guint64 duration;
+} TimeInfo;
+
+typedef struct _Atom
+{
+  guint32 size;
+  guint32 type;
+  guint64 extended_size;
+} Atom;
+
+typedef struct _AtomFull
+{
+  Atom header;
+
+  guint8 version;
+  guint8 flags[3];
+} AtomFull;
+
+/*
+ * Generic extension atom
+ */
+typedef struct _AtomData
+{
+  Atom header;
+
+  /* not written */
+  guint32 datalen;
+  guint8 *data;
+} AtomData;
+
+typedef struct _AtomFTYP
+{
+  Atom header;
+  guint32 major_brand;
+  guint32 version;
+  guint32 *compatible_brands;
+
+  /* not written */
+  guint32 compatible_brands_size;
+} AtomFTYP;
+
+typedef struct _AtomMVHD
+{
+  AtomFull header;
+
+  /* version 0: 32 bits */
+  TimeInfo time_info;
+
+  guint32 prefered_rate;      /* ISO: 0x00010000 */
+  guint16 volume;             /* ISO: 0x0100 */
+  guint16 reserved3;          /* ISO: 0x0 */
+  guint32 reserved4[2];       /* ISO: 0, 0 */
+  /* ISO: identity matrix =
+   * { 0x00010000, 0, 0, 0, 0x00010000, 0, 0, 0, 0x40000000 } */
+  guint32 matrix[9];
+
+  /* ISO: all 0 */
+  guint32 preview_time;
+  guint32 preview_duration;
+  guint32 poster_time;
+  guint32 selection_time;
+  guint32 selection_duration;
+  guint32 current_time;
+
+  guint32 next_track_id;
+} AtomMVHD;
+
+typedef struct _AtomTKHD
+{
+  AtomFull header;
+
+  /* version 0: 32 bits */
+  /* like the TimeInfo struct, but it has this track_ID inside */
+  guint64 creation_time;
+  guint64 modification_time;
+  guint32 track_ID;
+  guint32 reserved;
+  guint64 duration;
+
+  guint32 reserved2[2];
+  guint16 layer;
+  guint16 alternate_group;
+  guint16 volume;
+  guint16 reserved3;
+
+  /* ISO: identity matrix =
+   * { 0x00010000, 0, 0, 0, 0x00010000, 0, 0, 0, 0x40000000 } */
+  guint32 matrix[9];
+  guint32 width;
+  guint32 height;
+} AtomTKHD;
+
+typedef struct _AtomMDHD
+{
+  AtomFull header;
+
+  /* version 0: 32 bits */
+  TimeInfo time_info;
+
+  /* ISO: packed ISO-639-2/T language code (first bit must be 0) */
+  guint16 language_code;
+  /* ISO: 0 */
+  guint16 quality;
+} AtomMDHD;
+
+typedef struct _AtomHDLR
+{
+  AtomFull header;
+
+  /* ISO: 0 */
+  guint32 component_type;
+  guint32 handler_type;
+  guint32 manufacturer;
+  guint32 flags;
+  guint32 flags_mask;
+  gchar *name;
+} AtomHDLR;
+
+typedef struct _AtomVMHD
+{
+  AtomFull header;          /* ISO: flags = 1 */
+
+  guint16 graphics_mode;
+  /* RGB */
+  guint16 opcolor[3];
+} AtomVMHD;
+
+typedef struct _AtomSMHD
+{
+  AtomFull header;
+
+  guint16 balance;
+  guint16 reserved;
+} AtomSMHD;
+
+typedef struct _AtomHMHD
+{
+  AtomFull header;
+
+  guint16 max_pdu_size;
+  guint16 avg_pdu_size;
+  guint32 max_bitrate;
+  guint32 avg_bitrate;
+  guint32 sliding_avg_bitrate;
+} AtomHMHD;
+
+typedef struct _AtomURL
+{
+  AtomFull header;
+
+  gchar *location;
+} AtomURL;
+
+typedef struct _AtomDREF
+{
+  AtomFull header;
+
+  GList *entries;
+} AtomDREF;
+
+typedef struct _AtomDINF
+{
+  Atom header;
+
+  AtomDREF dref;
+} AtomDINF;
+
+typedef struct _STTSEntry
+{
+  guint32 sample_count;
+  gint32 sample_delta;
+} STTSEntry;
+
+typedef struct _AtomSTTS
+{
+  AtomFull header;
+
+  guint n_entries;
+  /* list of STTSEntry */
+  GList *entries;
+} AtomSTTS;
+
+typedef struct _AtomSTSS
+{
+  AtomFull header;
+
+  guint n_entries;
+  /* list of sample indexes (guint32) */
+  GList *entries;
+} AtomSTSS;
+
+typedef struct _AtomESDS
+{
+  AtomFull header;
+
+  ESDescriptor es;
+} AtomESDS;
+
+typedef struct _AtomFRMA
+{
+  Atom header;
+
+  guint32 media_type;
+} AtomFRMA;
+
+typedef enum _SampleEntryKind
+{
+  UNKNOWN,
+  AUDIO,
+  VIDEO
+} SampleEntryKind;
+
+typedef struct _SampleTableEntry
+{
+  Atom header;
+
+  guint8 reserved[6];
+  guint16 data_reference_index;
+
+  /* sort of entry */
+  SampleEntryKind kind;
+} SampleTableEntry;
+
+typedef struct _AtomHintSampleEntry
+{
+  SampleTableEntry se;
+  guint32 size;
+  guint8 *data;
+} AtomHintSampleEntry;
+
+typedef struct _SampleTableEntryMP4V
+{
+  SampleTableEntry se;
+
+  guint16 version;
+  guint16 revision_level;
+
+  guint32 vendor;                 /* fourcc code */
+  guint32 temporal_quality;
+  guint32 spatial_quality;
+
+  guint16 width;
+  guint16 height;
+
+  guint32 horizontal_resolution;
+  guint32 vertical_resolution;
+  guint32 datasize;
+
+  guint16 frame_count;            /* usually 1 */
+
+  guint8 compressor[32];         /* pascal string, i.e. first byte = length */
+
+  guint16 depth;
+  guint16 color_table_id;
+
+  /* (optional) list of AtomInfo */
+  GList *extension_atoms;
+} SampleTableEntryMP4V;
+
+typedef struct _SampleTableEntryMP4A
+{
+  SampleTableEntry se;
+
+  guint16 version;
+  guint16 revision_level;
+  guint32 vendor;
+
+  guint16 channels;
+  guint16 sample_size;
+  guint16 compression_id;
+  guint16 packet_size;
+
+  guint32 sample_rate;            /* fixed point 16.16 */
+
+  guint32 samples_per_packet;
+  guint32 bytes_per_packet;
+  guint32 bytes_per_frame;
+  guint32 bytes_per_sample;
+
+  /* (optional) list of AtomInfo */
+  GList *extension_atoms;
+} SampleTableEntryMP4A;
+
+typedef struct _SampleTableEntryMP4S
+{
+  SampleTableEntry se;
+
+  AtomESDS es;
+} SampleTableEntryMP4S;
+
+typedef struct _AtomSTSD
+{
+  AtomFull header;
+
+  guint n_entries;
+  /* list of subclasses of SampleTableEntry */
+  GList *entries;
+} AtomSTSD;
+
+typedef struct _AtomSTSZ
+{
+  AtomFull header;
+
+  guint32 sample_size;
+
+  /* need the size here because when sample_size is constant,
+   * the list is empty */
+  guint32 table_size;
+  /* list of guint32 */
+  GList *entries;
+} AtomSTSZ;
+
+typedef struct _STSCEntry
+{
+  guint32 first_chunk;
+  guint32 samples_per_chunk;
+  guint32 sample_description_index;
+} STSCEntry;
+
+typedef struct _AtomSTSC
+{
+  AtomFull header;
+
+  guint n_entries;
+  /* list of STSCEntry */
+  GList *entries;
+} AtomSTSC;
+
+
+/*
+ * used for both STCO and CO64
+ * if used as STCO, entries should be truncated to use only 32bits
+ */
+typedef struct _AtomSTCO64
+{
+  AtomFull header;
+
+  guint n_entries;
+  /* list of guint64 */
+  GList *entries;
+} AtomSTCO64;
+
+typedef struct _CTTSEntry
+{
+  guint32 samplecount;
+  guint32 sampleoffset;
+} CTTSEntry;
+
+typedef struct _AtomCTTS
+{
+  AtomFull header;
+
+  /* also entry count here */
+  guint n_entries;
+  GList *entries;
+} AtomCTTS;
+
+typedef struct _AtomSTBL
+{
+  Atom header;
+
+  AtomSTSD stsd;
+  AtomSTTS stts;
+  AtomSTSS stss;
+  AtomSTSC stsc;
+  AtomSTSZ stsz;
+  /* NULL if not present */
+  AtomCTTS *ctts;
+
+  AtomSTCO64 stco64;
+} AtomSTBL;
+
+typedef struct _AtomMINF
+{
+  Atom header;
+
+  /* only (exactly) one of those must be present */
+  AtomVMHD *vmhd;
+  AtomSMHD *smhd;
+  AtomHMHD *hmhd;
+
+  AtomHDLR *hdlr;
+  AtomDINF dinf;
+  AtomSTBL stbl;
+} AtomMINF;
+
+typedef struct _AtomMDIA
+{
+  Atom header;
+
+  AtomMDHD mdhd;
+  AtomHDLR hdlr;
+  AtomMINF minf;
+} AtomMDIA;
+
+typedef struct _AtomILST
+{
+  Atom header;
+
+  /* list of AtomInfo */
+  GList* entries;
+} AtomILST;
+
+typedef struct _AtomTagData
+{
+  AtomFull header;
+  guint32 reserved;
+
+  guint32 datalen;
+  guint8* data;
+} AtomTagData;
+
+typedef struct _AtomTag
+{
+  Atom header;
+
+  AtomTagData data;
+} AtomTag;
+
+typedef struct _AtomMETA
+{
+  AtomFull header;
+  AtomHDLR hdlr;
+  AtomILST *ilst;
+} AtomMETA;
+
+typedef struct _AtomUDTA
+{
+  Atom header;
+
+  AtomMETA *meta;
+} AtomUDTA;
+
+typedef struct _AtomTRAK
+{
+  Atom header;
+
+  AtomTKHD tkhd;
+  AtomMDIA mdia;
+} AtomTRAK;
+
+typedef struct _AtomMOOV
+{
+  Atom header;
+
+  AtomMVHD mvhd;
+
+  /* list of AtomTRAK */
+  GList *traks;
+  AtomUDTA *udta;
+} AtomMOOV;
+
+typedef struct _AtomWAVE
+{
+  Atom header;
+
+  /* list of AtomInfo */
+  GList *extension_atoms;
+} AtomWAVE;
+
+
+/*
+ * Function to serialize an atom
+ */
+typedef guint64 (*AtomCopyDataFunc) (Atom *atom, guint8 **buffer, guint64 *size, guint64 *offset);
+
+/*
+ * Releases memory allocated by an atom
+ */
+typedef guint64 (*AtomFreeFunc) (Atom *atom);
+
+/*
+ * Some atoms might have many optional different kinds of child atoms, so this
+ * is useful for enabling generic handling of any atom.
+ * All we need are the two functions (copying it to an array
+ * for serialization and the memory releasing function).
+ */
+typedef struct _AtomInfo
+{
+  Atom *atom;
+  AtomCopyDataFunc copy_data_func;
+  AtomFreeFunc free_func;
+} AtomInfo;
+
+
+guint64    atom_copy_data              (Atom *atom, guint8 **buffer,
+                                        guint64 *size, guint64* offset);
+
+AtomFTYP*  atom_ftyp_new               (AtomsContext *context, guint32 major,
+                                        guint32 version, GList *brands);
+guint64    atom_ftyp_copy_data         (AtomFTYP *ftyp, guint8 **buffer,
+                                        guint64 *size, guint64 *offset);
+void       atom_ftyp_free              (AtomFTYP *ftyp);
+
+AtomTRAK*  atom_trak_new               (AtomsContext *context);
+void       atom_trak_add_samples       (AtomTRAK * trak, guint32 nsamples, guint32 delta,
+                                        guint32 size, guint64 chunk_offset, gboolean sync,
+                                        gboolean do_pts, gint64 pts_offset);
+guint32    atom_trak_get_timescale     (AtomTRAK *trak);
+
+AtomMOOV*  atom_moov_new               (AtomsContext *context);
+void       atom_moov_free              (AtomMOOV *moov);
+guint64    atom_moov_copy_data         (AtomMOOV *atom, guint8 **buffer, guint64 *size, guint64* offset);
+void       atom_moov_update_timescale  (AtomMOOV *moov, guint32 timescale);
+void       atom_moov_update_duration   (AtomMOOV *moov);
+void       atom_moov_set_64bits        (AtomMOOV *moov, gboolean large_file);
+void       atom_moov_chunks_add_offset (AtomMOOV *moov, guint32 offset);
+void       atom_moov_add_trak          (AtomMOOV *moov, AtomTRAK *trak);
+
+/* media sample description related helpers */
+
+typedef struct
+{
+  guint32 fourcc;
+  guint width;
+  guint height;
+  guint depth;
+  guint frame_count;
+  gint color_table_id;
+
+  GstBuffer *codec_data;
+} VisualSampleEntry;
+
+typedef struct
+{
+  guint32 fourcc;
+  guint version;
+  gint compression_id;
+  guint sample_rate;
+  guint channels;
+  guint sample_size;
+  guint bytes_per_packet;
+  guint samples_per_packet;
+  guint bytes_per_sample;
+  guint bytes_per_frame;
+
+  GstBuffer *codec_data;
+} AudioSampleEntry;
+
+AtomInfo* build_sample_entry_extension (AtomTRAK * trak, AtomsTreeFlavor flavor,
+                                        guint32 fourcc, guint esds_type,
+                                        const GstBuffer * codec_data);
+
+void atom_trak_set_audio_type (AtomTRAK * trak, AtomsContext * context,
+                               AudioSampleEntry * entry, guint32 scale,
+                               AtomInfo * ext, gint sample_size);
+void atom_trak_set_video_type (AtomTRAK * trak, AtomsContext * context,
+                               VisualSampleEntry * entry, guint32 rate,
+                               AtomInfo * ext);
+
+
+/*
+ * Meta tags functions
+ */
+void atom_moov_add_str_tag    (AtomMOOV *moov, guint32 fourcc, const gchar *value);
+void atom_moov_add_uint_tag   (AtomMOOV *moov, guint32 fourcc, guint32 flags,
+                               guint32 value);
+void atom_moov_add_tag        (AtomMOOV *moov, guint32 fourcc, guint32 flags,
+                               const guint8 * data, guint size);
+void atom_moov_add_blob_tag   (AtomMOOV *moov, guint8 *data, guint size);
+
+#endif /* __ATOMS_H__ */
diff --git a/gst/qtmux/descriptors.c b/gst/qtmux/descriptors.c
new file mode 100644
index 00000000..edb6b196
--- /dev/null
+++ b/gst/qtmux/descriptors.c
@@ -0,0 +1,442 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "descriptors.h"
+
+/**
+ * Some mp4 structures (descriptors) use a coding scheme for
+ * representing its size.
+ * It is grouped in bytes. The 1st bit set to 1 means we need another byte,
+ * 0 otherwise. The remaining 7 bits are the useful values.
+ *
+ * The next set of functions handle those values
+ */
+
+/**
+ * Gets an unsigned integer and packs it into a 'expandable size' format
+ * (as used by mp4 descriptors)
+ * @size: the integer to be parsed
+ * @ptr: the array to place the result
+ * @array_size: the size of ptr array
+ */
+static void
+expandable_size_parse (guint64 size, guint8 * ptr, guint32 array_size)
+{
+  int index = 0;
+
+  memset (ptr, 0, sizeof (array_size));
+  while (size > 0 && index < array_size) {
+    ptr[index++] = (size > 0x7F ? 0x80 : 0x0) | (size & 0x7F);
+    size = size >> 7;
+  }
+}
+
+/**
+ * Gets how many positions in an array holding an 'expandable size'
+ * are really used
+ *
+ * @ptr: the array with the 'expandable size'
+ * @array_size: the size of ptr array
+ *
+ * Returns: the number of really used positions
+ */
+static guint64
+expandable_size_get_length (guint8 * ptr, guint32 array_size)
+{
+  gboolean next = TRUE;
+  guint32 index = 0;
+
+  while (next && index < array_size) {
+    next = ((ptr[index] & 0x80) == 1);
+    index++;
+  }
+  return index;
+}
+
+/*
+ * Initializers below
+ */
+
+static void
+desc_base_descriptor_init (BaseDescriptor * bd, guint8 tag, guint32 size)
+{
+  bd->tag = tag;
+  expandable_size_parse (size, bd->size, 4);
+}
+
+static void
+desc_dec_specific_info_init (DecoderSpecificInfoDescriptor * dsid)
+{
+  desc_base_descriptor_init (&dsid->base, DECODER_SPECIFIC_INFO_TAG, 0);
+  dsid->length = 0;
+  dsid->data = NULL;
+}
+
+DecoderSpecificInfoDescriptor *
+desc_dec_specific_info_new ()
+{
+  DecoderSpecificInfoDescriptor *desc =
+      g_new0 (DecoderSpecificInfoDescriptor, 1);
+  desc_dec_specific_info_init (desc);
+  return desc;
+}
+
+static void
+desc_dec_conf_desc_init (DecoderConfigDescriptor * dcd)
+{
+  desc_base_descriptor_init (&dcd->base, DECODER_CONFIG_DESC_TAG, 0);
+  dcd->dec_specific_info = NULL;
+}
+
+static void
+desc_sl_conf_desc_init (SLConfigDescriptor * sl)
+{
+  desc_base_descriptor_init (&sl->base, SL_CONFIG_DESC_TAG, 0);
+  sl->predefined = 0x2;
+}
+
+void
+desc_es_init (ESDescriptor * es)
+{
+  desc_base_descriptor_init (&es->base, ES_DESCRIPTOR_TAG, 0);
+
+  es->id = 0;
+  es->flags = 0;
+  es->depends_on_es_id = 0;
+  es->ocr_es_id = 0;
+  es->url_length = 0;
+  es->url_string = NULL;
+
+  desc_dec_conf_desc_init (&es->dec_conf_desc);
+  desc_sl_conf_desc_init (&es->sl_conf_desc);
+}
+
+ESDescriptor *
+desc_es_descriptor_new ()
+{
+  ESDescriptor *es = g_new0 (ESDescriptor, 1);
+
+  desc_es_init (es);
+  return es;
+}
+
+/*
+ * Deinitializers/Destructors below
+ */
+
+static void
+desc_base_descriptor_clear (BaseDescriptor * base)
+{
+}
+
+void
+desc_dec_specific_info_free (DecoderSpecificInfoDescriptor * dsid)
+{
+  desc_base_descriptor_clear (&dsid->base);
+  if (dsid->data) {
+    g_free (dsid->data);
+    dsid->data = NULL;
+  }
+  g_free (dsid);
+}
+
+static void
+desc_dec_conf_desc_clear (DecoderConfigDescriptor * dec)
+{
+  desc_base_descriptor_clear (&dec->base);
+  if (dec->dec_specific_info) {
+    desc_dec_specific_info_free (dec->dec_specific_info);
+  }
+}
+
+static void
+desc_sl_config_descriptor_clear (SLConfigDescriptor * sl)
+{
+  desc_base_descriptor_clear (&sl->base);
+}
+
+void
+desc_es_descriptor_clear (ESDescriptor * es)
+{
+  desc_base_descriptor_clear (&es->base);
+  if (es->url_string) {
+    g_free (es->url_string);
+    es->url_string = NULL;
+  }
+  desc_dec_conf_desc_clear (&es->dec_conf_desc);
+  desc_sl_config_descriptor_clear (&es->sl_conf_desc);
+}
+
+void
+desc_es_descriptor_free (ESDescriptor * es)
+{
+  desc_es_descriptor_clear (es);
+  g_free (es);
+}
+
+/*
+ * Size handling functions below
+ */
+
+void
+desc_dec_specific_info_alloc_data (DecoderSpecificInfoDescriptor * dsid,
+    guint32 size)
+{
+  if (dsid->data) {
+    g_free (dsid->data);
+  }
+  dsid->data = g_new0 (guint8, size);
+  dsid->length = size;
+}
+
+static void
+desc_base_descriptor_set_size (BaseDescriptor * bd, guint32 size)
+{
+  expandable_size_parse (size, bd->size, 4);
+}
+
+static guint64
+desc_base_descriptor_get_size (BaseDescriptor * bd)
+{
+  guint64 size = 0;
+
+  size += sizeof (guint8);
+  size += expandable_size_get_length (bd->size, 4) * sizeof (guint8);
+  return size;
+}
+
+static guint64
+desc_sl_config_descriptor_get_size (SLConfigDescriptor * sl_desc)
+{
+  guint64 size = 0;
+  guint64 extra_size = 0;
+
+  size += desc_base_descriptor_get_size (&sl_desc->base);
+  /* predefined */
+  extra_size += sizeof (guint8);
+
+  desc_base_descriptor_set_size (&sl_desc->base, extra_size);
+
+  return size + extra_size;
+}
+
+static guint64
+desc_dec_specific_info_get_size (DecoderSpecificInfoDescriptor * dsid)
+{
+  guint64 size = 0;
+  guint64 extra_size = 0;
+
+  size += desc_base_descriptor_get_size (&dsid->base);
+  extra_size += sizeof (guint8) * dsid->length;
+  desc_base_descriptor_set_size (&dsid->base, extra_size);
+  return size + extra_size;
+}
+
+static guint64
+desc_dec_config_descriptor_get_size (DecoderConfigDescriptor * dec_desc)
+{
+  guint64 size = 0;
+  guint64 extra_size = 0;
+
+  size += desc_base_descriptor_get_size (&dec_desc->base);
+  /* object type */
+  extra_size += sizeof (guint8);
+  /* stream type */
+  extra_size += sizeof (guint8);
+  /* buffer size */
+  extra_size += sizeof (guint8) * 3;
+  /* max bitrate */
+  extra_size += sizeof (guint32);
+  /* avg bitrate */
+  extra_size += sizeof (guint32);
+  if (dec_desc->dec_specific_info) {
+    extra_size += desc_dec_specific_info_get_size (dec_desc->dec_specific_info);
+  }
+
+  desc_base_descriptor_set_size (&dec_desc->base, extra_size);
+  return size + extra_size;
+}
+
+static guint64
+desc_es_descriptor_get_size (ESDescriptor * es)
+{
+  guint64 size = 0;
+  guint64 extra_size = 0;
+
+  size += desc_base_descriptor_get_size (&es->base);
+  /* id */
+  extra_size += sizeof (guint16);
+  /* flags */
+  extra_size += sizeof (guint8);
+  /* depends_on_es_id */
+  if (es->flags & 0x80) {
+    extra_size += sizeof (guint16);
+  }
+  if (es->flags & 0x40) {
+    /* url_length */
+    extra_size += sizeof (guint8);
+    /* url */
+    extra_size += sizeof (gchar) * es->url_length;
+  }
+  if (es->flags & 0x20) {
+    /* ocr_es_id */
+    extra_size += sizeof (guint16);
+  }
+
+  extra_size += desc_dec_config_descriptor_get_size (&es->dec_conf_desc);
+  extra_size += desc_sl_config_descriptor_get_size (&es->sl_conf_desc);
+
+  desc_base_descriptor_set_size (&es->base, extra_size);
+
+  return size + extra_size;
+}
+
+static gboolean
+desc_es_descriptor_check_stream_dependency (ESDescriptor * es)
+{
+  return es->flags & 0x80;
+}
+
+static gboolean
+desc_es_descriptor_check_url_flag (ESDescriptor * es)
+{
+  return es->flags & 0x40;
+}
+
+static gboolean
+desc_es_descriptor_check_ocr (ESDescriptor * es)
+{
+  return es->flags & 0x20;
+}
+
+/* Copy/Serializations Functions below */
+
+static guint64
+desc_base_descriptor_copy_data (BaseDescriptor * desc, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  prop_copy_uint8 (desc->tag, buffer, size, offset);
+  prop_copy_uint8_array (desc->size, expandable_size_get_length (desc->size, 4),
+      buffer, size, offset);
+  return original_offset - *offset;
+}
+
+static guint64
+desc_sl_config_descriptor_copy_data (SLConfigDescriptor * desc,
+    guint8 ** buffer, guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!desc_base_descriptor_copy_data (&desc->base, buffer, size, offset)) {
+    return 0;
+  }
+  /* predefined attribute */
+  prop_copy_uint8 (desc->predefined, buffer, size, offset);
+
+  return *offset - original_offset;
+}
+
+static guint64
+desc_dec_specific_info_copy_data (DecoderSpecificInfoDescriptor * desc,
+    guint8 ** buffer, guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!desc_base_descriptor_copy_data (&desc->base, buffer, size, offset)) {
+    return 0;
+  }
+  prop_copy_uint8_array (desc->data, desc->length, buffer, size, offset);
+
+  return *offset - original_offset;
+}
+
+static guint64
+desc_dec_config_descriptor_copy_data (DecoderConfigDescriptor * desc,
+    guint8 ** buffer, guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  if (!desc_base_descriptor_copy_data (&desc->base, buffer, size, offset)) {
+    return 0;
+  }
+
+  prop_copy_uint8 (desc->object_type, buffer, size, offset);
+
+  prop_copy_uint8 (desc->stream_type, buffer, size, offset);
+  prop_copy_uint8_array (desc->buffer_size_DB, 3, buffer, size, offset);
+
+  prop_copy_uint32 (desc->max_bitrate, buffer, size, offset);
+  prop_copy_uint32 (desc->avg_bitrate, buffer, size, offset);
+
+  if (desc->dec_specific_info) {
+    if (!desc_dec_specific_info_copy_data (desc->dec_specific_info, buffer,
+            size, offset)) {
+      return 0;
+    }
+  }
+
+  return *offset - original_offset;
+}
+
+guint64
+desc_es_descriptor_copy_data (ESDescriptor * desc, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 desc_size;
+  guint64 original_offset = *offset;
+
+  /* must call this twice to have size fields of all contained descriptors set
+   * correctly, and to have the size of the size fields taken into account */
+  desc_size = desc_es_descriptor_get_size (desc);
+  desc_size = desc_es_descriptor_get_size (desc);
+
+  if (!desc_base_descriptor_copy_data (&desc->base, buffer, size, offset)) {
+    return 0;
+  }
+  /* id and flags */
+  prop_copy_uint16 (desc->id, buffer, size, offset);
+  prop_copy_uint8 (desc->flags, buffer, size, offset);
+
+  if (desc_es_descriptor_check_stream_dependency (desc)) {
+    prop_copy_uint16 (desc->depends_on_es_id, buffer, size, offset);
+  }
+
+  if (desc_es_descriptor_check_url_flag (desc)) {
+    prop_copy_size_string (desc->url_string, desc->url_length, buffer, size,
+        offset);
+  }
+
+  if (desc_es_descriptor_check_ocr (desc)) {
+    prop_copy_uint16 (desc->ocr_es_id, buffer, size, offset);
+  }
+
+  if (!desc_dec_config_descriptor_copy_data (&desc->dec_conf_desc, buffer, size,
+          offset)) {
+    return 0;
+  }
+
+  if (!desc_sl_config_descriptor_copy_data (&desc->sl_conf_desc, buffer, size,
+          offset)) {
+    return 0;
+  }
+
+  return *offset - original_offset;
+}
diff --git a/gst/qtmux/descriptors.h b/gst/qtmux/descriptors.h
new file mode 100644
index 00000000..db05a2ba
--- /dev/null
+++ b/gst/qtmux/descriptors.h
@@ -0,0 +1,128 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __DESCRIPTORS_H__
+#define __DESCRIPTORS_H__
+
+#include <glib.h>
+#include <string.h>
+#include "properties.h"
+
+/*
+ * Tags for descriptor (each kind is represented by a number, instead of fourcc as in atoms)
+ */
+#define OBJECT_DESC_TAG            0x01
+#define INIT_OBJECT_DESC_TAG       0x02
+#define ES_DESCRIPTOR_TAG          0x03
+#define DECODER_CONFIG_DESC_TAG    0x04
+#define DECODER_SPECIFIC_INFO_TAG  0x05
+#define SL_CONFIG_DESC_TAG         0x06
+#define ES_ID_INC_TAG              0x0E
+#define MP4_INIT_OBJECT_DESC_TAG   0x10
+
+#define ESDS_OBJECT_TYPE_MPEG1_P3       0x6B
+#define ESDS_OBJECT_TYPE_MPEG2_P7_MAIN  0x66
+#define ESDS_OBJECT_TYPE_MPEG4_P7_LC    0x67
+#define ESDS_OBJECT_TYPE_MPEG4_P7_SSR   0x68
+#define ESDS_OBJECT_TYPE_MPEG4_P2       0x20
+#define ESDS_OBJECT_TYPE_MPEG4_P3       0x40
+
+#define ESDS_STREAM_TYPE_VISUAL         0x04
+#define ESDS_STREAM_TYPE_AUDIO          0x05
+
+
+typedef struct _BaseDescriptor
+{
+  guint8 tag;
+  /* the first bit of each byte indicates if the next byte should be used */
+  guint8 size[4];
+} BaseDescriptor;
+
+typedef struct _SLConfigDescriptor
+{
+  BaseDescriptor base;
+
+  guint8 predefined;              /* everything is supposed predefined */
+} SLConfigDescriptor;
+
+typedef struct _DecoderSpecificInfoDescriptor
+{
+  BaseDescriptor base;
+  guint32 length;
+  guint8 *data;
+} DecoderSpecificInfoDescriptor;
+
+typedef struct _DecoderConfigDescriptor {
+  BaseDescriptor base;
+
+  guint8 object_type;
+
+  /* following are condensed into streamType:
+   * bit(6) streamType;
+   * bit(1) upStream;
+   * const bit(1) reserved=1;
+  */
+  guint8 stream_type;
+
+  guint8 buffer_size_DB[3];
+  guint32 max_bitrate;
+  guint32 avg_bitrate;
+
+  DecoderSpecificInfoDescriptor *dec_specific_info;
+} DecoderConfigDescriptor;
+
+typedef struct _ESDescriptor
+{
+  BaseDescriptor base;
+
+  guint16 id;
+
+  /* flags contains the following:
+   * bit(1) streamDependenceFlag;
+   * bit(1) URL_Flag;
+   * bit(1) OCRstreamFlag;
+   * bit(5) streamPriority;
+   */
+  guint8 flags;
+
+  guint16 depends_on_es_id;
+  guint8 url_length;              /* only if URL_flag is set */
+  guint8 *url_string;             /* size is url_length */
+
+  guint16 ocr_es_id;              /* only if OCRstreamFlag is set */
+
+  DecoderConfigDescriptor dec_conf_desc;
+  SLConfigDescriptor sl_conf_desc;
+
+  /* optional remainder of ESDescriptor is not used */
+} ESDescriptor;
+
+/* --- FUNCTIONS --- */
+void    desc_es_init                               (ESDescriptor *es);
+ESDescriptor *desc_es_descriptor_new               ();
+guint64 desc_es_descriptor_copy_data               (ESDescriptor *es, guint8 **buffer,
+                                                    guint64 *size, guint64 *offset);
+void    desc_es_descriptor_clear                   (ESDescriptor *es);
+
+DecoderSpecificInfoDescriptor *desc_dec_specific_info_new();
+void    desc_dec_specific_info_free                (DecoderSpecificInfoDescriptor *dsid);
+void    desc_dec_specific_info_alloc_data          (DecoderSpecificInfoDescriptor *dsid,
+                                                    guint32 size);
+
+#endif /* __DESCRIPTORS_H__ */
diff --git a/gst/qtmux/fourcc.h b/gst/qtmux/fourcc.h
new file mode 100644
index 00000000..905ca231
--- /dev/null
+++ b/gst/qtmux/fourcc.h
@@ -0,0 +1,159 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __FOURCC_H__
+#define __FOURCC_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define FOURCC_null     0x0
+
+#define FOURCC_moov     GST_MAKE_FOURCC('m','o','o','v')
+#define FOURCC_mvhd     GST_MAKE_FOURCC('m','v','h','d')
+#define FOURCC_clip     GST_MAKE_FOURCC('c','l','i','p')
+#define FOURCC_trak     GST_MAKE_FOURCC('t','r','a','k')
+#define FOURCC_udta     GST_MAKE_FOURCC('u','d','t','a')
+#define FOURCC_ctab     GST_MAKE_FOURCC('c','t','a','b')
+#define FOURCC_tkhd     GST_MAKE_FOURCC('t','k','h','d')
+#define FOURCC_crgn     GST_MAKE_FOURCC('c','r','g','n')
+#define FOURCC_matt     GST_MAKE_FOURCC('m','a','t','t')
+#define FOURCC_kmat     GST_MAKE_FOURCC('k','m','a','t')
+#define FOURCC_edts     GST_MAKE_FOURCC('e','d','t','s')
+#define FOURCC_elst     GST_MAKE_FOURCC('e','l','s','t')
+#define FOURCC_load     GST_MAKE_FOURCC('l','o','a','d')
+#define FOURCC_tref     GST_MAKE_FOURCC('t','r','e','f')
+#define FOURCC_imap     GST_MAKE_FOURCC('i','m','a','p')
+#define FOURCC___in     GST_MAKE_FOURCC(' ',' ','i','n')
+#define FOURCC___ty     GST_MAKE_FOURCC(' ',' ','t','y')
+#define FOURCC_mdia     GST_MAKE_FOURCC('m','d','i','a')
+#define FOURCC_mdhd     GST_MAKE_FOURCC('m','d','h','d')
+#define FOURCC_hdlr     GST_MAKE_FOURCC('h','d','l','r')
+#define FOURCC_dhlr     GST_MAKE_FOURCC('d','h','l','r')
+#define FOURCC_mhlr     GST_MAKE_FOURCC('m','h','l','r')
+#define FOURCC_minf     GST_MAKE_FOURCC('m','i','n','f')
+#define FOURCC_mdir     GST_MAKE_FOURCC('m','d','i','r')
+#define FOURCC_vmhd     GST_MAKE_FOURCC('v','m','h','d')
+#define FOURCC_smhd     GST_MAKE_FOURCC('s','m','h','d')
+#define FOURCC_gmhd     GST_MAKE_FOURCC('g','m','h','d')
+#define FOURCC_gmin     GST_MAKE_FOURCC('g','m','i','n')
+#define FOURCC_dinf     GST_MAKE_FOURCC('d','i','n','f')
+#define FOURCC_dref     GST_MAKE_FOURCC('d','r','e','f')
+#define FOURCC_stbl     GST_MAKE_FOURCC('s','t','b','l')
+#define FOURCC_stsd     GST_MAKE_FOURCC('s','t','s','d')
+#define FOURCC_stts     GST_MAKE_FOURCC('s','t','t','s')
+#define FOURCC_stss     GST_MAKE_FOURCC('s','t','s','s')
+#define FOURCC_stsc     GST_MAKE_FOURCC('s','t','s','c')
+#define FOURCC_stsz     GST_MAKE_FOURCC('s','t','s','z')
+#define FOURCC_stco     GST_MAKE_FOURCC('s','t','c','o')
+#define FOURCC_vide     GST_MAKE_FOURCC('v','i','d','e')
+#define FOURCC_soun     GST_MAKE_FOURCC('s','o','u','n')
+#define FOURCC_strm     GST_MAKE_FOURCC('s','t','r','m')
+#define FOURCC_rtsp     GST_MAKE_FOURCC('r','t','s','p')
+#define FOURCC_co64     GST_MAKE_FOURCC('c','o','6','4')
+#define FOURCC_cmov     GST_MAKE_FOURCC('c','m','o','v')
+#define FOURCC_dcom     GST_MAKE_FOURCC('d','c','o','m')
+#define FOURCC_cmvd     GST_MAKE_FOURCC('c','m','v','d')
+#define FOURCC_hint     GST_MAKE_FOURCC('h','i','n','t')
+#define FOURCC_mp4a     GST_MAKE_FOURCC('m','p','4','a')
+#define FOURCC__mp3     GST_MAKE_FOURCC('.','m','p','3')
+#define FOURCC_mp4s	GST_MAKE_FOURCC('m','p','4','s')
+#define FOURCC_mp4v     GST_MAKE_FOURCC('m','p','4','v')
+#define FOURCC_2vuy     GST_MAKE_FOURCC('2','v','u','y')
+#define FOURCC_wave     GST_MAKE_FOURCC('w','a','v','e')
+#define FOURCC_appl     GST_MAKE_FOURCC('a','p','p','l')
+#define FOURCC_esds     GST_MAKE_FOURCC('e','s','d','s')
+#define FOURCC_hnti     GST_MAKE_FOURCC('h','n','t','i')
+#define FOURCC_rtp_     GST_MAKE_FOURCC('r','t','p',' ')
+#define FOURCC_sdp_     GST_MAKE_FOURCC('s','d','p',' ')
+#define FOURCC_meta     GST_MAKE_FOURCC('m','e','t','a')
+#define FOURCC_ilst     GST_MAKE_FOURCC('i','l','s','t')
+#define FOURCC__nam     GST_MAKE_FOURCC(0xa9,'n','a','m')
+#define FOURCC__ART     GST_MAKE_FOURCC(0xa9,'A','R','T')
+#define FOURCC__wrt     GST_MAKE_FOURCC(0xa9,'w','r','t')
+#define FOURCC__grp     GST_MAKE_FOURCC(0xa9,'g','r','p')
+#define FOURCC__alb     GST_MAKE_FOURCC(0xa9,'a','l','b')
+#define FOURCC__day     GST_MAKE_FOURCC(0xa9,'d','a','y')
+#define FOURCC__des     GST_MAKE_FOURCC(0xa9,'d','e','s')
+#define FOURCC_gnre     GST_MAKE_FOURCC('g','n','r','e')
+#define FOURCC_disc     GST_MAKE_FOURCC('d','i','s','c')
+#define FOURCC_disk     GST_MAKE_FOURCC('d','i','s','k')
+#define FOURCC_trkn     GST_MAKE_FOURCC('t','r','k','n')
+#define FOURCC_cprt     GST_MAKE_FOURCC('c','p','r','t')
+#define FOURCC_covr     GST_MAKE_FOURCC('c','o','v','r')
+#define FOURCC_cpil     GST_MAKE_FOURCC('c','p','i','l')
+#define FOURCC_tmpo     GST_MAKE_FOURCC('t','m','p','o')
+#define FOURCC__too     GST_MAKE_FOURCC(0xa9,'t','o','o')
+#define FOURCC_keyw     GST_MAKE_FOURCC('k','e','y','w')
+#define FOURCC_____     GST_MAKE_FOURCC('-','-','-','-')
+#define FOURCC_free     GST_MAKE_FOURCC('f','r','e','e')
+#define FOURCC_data     GST_MAKE_FOURCC('d','a','t','a')
+#define FOURCC_SVQ3     GST_MAKE_FOURCC('S','V','Q','3')
+#define FOURCC_rmra     GST_MAKE_FOURCC('r','m','r','a')
+#define FOURCC_rmda     GST_MAKE_FOURCC('r','m','d','a')
+#define FOURCC_rdrf     GST_MAKE_FOURCC('r','d','r','f')
+#define FOURCC__gen     GST_MAKE_FOURCC(0xa9, 'g', 'e', 'n')
+#define FOURCC_rmdr     GST_MAKE_FOURCC('r','m','d','r')
+#define FOURCC_rmvc     GST_MAKE_FOURCC('r','m','v','c')
+#define FOURCC_qtim     GST_MAKE_FOURCC('q','t','i','m')
+#define FOURCC_drms     GST_MAKE_FOURCC('d','r','m','s')
+#define FOURCC_avc1     GST_MAKE_FOURCC('a','v','c','1')
+#define FOURCC_h263     GST_MAKE_FOURCC('h','2','6','3')
+#define FOURCC_avcC     GST_MAKE_FOURCC('a','v','c','C')
+#define FOURCC_VP31     GST_MAKE_FOURCC('V','P','3','1')
+#define FOURCC_rle_     GST_MAKE_FOURCC('r','l','e',' ')
+#define FOURCC_MAC6     GST_MAKE_FOURCC('M','A','C','6')
+#define FOURCC_MAC3     GST_MAKE_FOURCC('M','A','C','3')
+#define FOURCC_ima4     GST_MAKE_FOURCC('i','m','a','4')
+#define FOURCC_ulaw     GST_MAKE_FOURCC('u','l','a','w')
+#define FOURCC_alaw     GST_MAKE_FOURCC('a','l','a','w')
+#define FOURCC_twos     GST_MAKE_FOURCC('t','w','o','s')
+#define FOURCC_sowt     GST_MAKE_FOURCC('s','o','w','t')
+#define FOURCC_raw_     GST_MAKE_FOURCC('r','a','w',' ')
+#define FOURCC_QDM2     GST_MAKE_FOURCC('Q','D','M','2')
+#define FOURCC_alac     GST_MAKE_FOURCC('a','l','a','c')
+#define FOURCC_samr     GST_MAKE_FOURCC('s','a','m','r')
+#define FOURCC_sawb     GST_MAKE_FOURCC('s','a','w','b')
+#define FOURCC_mdat     GST_MAKE_FOURCC('m','d','a','t')
+#define FOURCC_wide     GST_MAKE_FOURCC('w','i','d','e')
+#define FOURCC_PICT     GST_MAKE_FOURCC('P','I','C','T')
+#define FOURCC_pnot     GST_MAKE_FOURCC('p','n','o','t')
+#define FOURCC_zlib     GST_MAKE_FOURCC('z','l','i','b')
+#define FOURCC_alis     GST_MAKE_FOURCC('a','l','i','s')
+#define FOURCC_url_     GST_MAKE_FOURCC('u','r','l',' ')
+#define FOURCC_frma     GST_MAKE_FOURCC('f','r','m','a')
+#define FOURCC_ctts     GST_MAKE_FOURCC('c','t','t','s')
+#define FOURCC_drac     GST_MAKE_FOURCC('d','r','a','c')
+#define FOURCC_jpeg     GST_MAKE_FOURCC('j','p','e','g')
+
+/* Xiph fourcc */
+#define FOURCC_XiTh     GST_MAKE_FOURCC('X','i','T','h')
+#define FOURCC_XdxT     GST_MAKE_FOURCC('X','d','x','T')
+#define FOURCC_tCtH     GST_MAKE_FOURCC('t','C','t','H')
+#define FOURCC_tCt_     GST_MAKE_FOURCC('t','C','t','#')
+#define FOURCC_tCtC     GST_MAKE_FOURCC('t','C','t','C')
+
+/* ilst metatags */
+#define FOURCC_titl     GST_MAKE_FOURCC('t','i','t','l')
+#define FOURCC__cmt     GST_MAKE_FOURCC(0xa9, 'c','m','t')
+
+G_END_DECLS
+
+#endif /* __FOURCC_H__ */
diff --git a/gst/qtmux/ftypcc.h b/gst/qtmux/ftypcc.h
new file mode 100644
index 00000000..b00ebd1c
--- /dev/null
+++ b/gst/qtmux/ftypcc.h
@@ -0,0 +1,39 @@
+/* GStreamer
+ * Copyright (C) <2008> Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __FTYP_CC_H__
+#define __FTYP_CC_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define FOURCC_ftyp	GST_MAKE_FOURCC('f','t','y','p')
+#define FOURCC_isom     GST_MAKE_FOURCC('i','s','o','m')
+#define FOURCC_iso2     GST_MAKE_FOURCC('i','s','o','2')
+#define FOURCC_mp41     GST_MAKE_FOURCC('m','p','4','1')
+#define FOURCC_mp42     GST_MAKE_FOURCC('m','p','4','2')
+#define FOURCC_mjp2     GST_MAKE_FOURCC('m','j','p','2')
+#define FOURCC_3gg7     GST_MAKE_FOURCC('3','g','g','7')
+#define FOURCC_avc1     GST_MAKE_FOURCC('a','v','c','1')
+#define FOURCC_qt__     GST_MAKE_FOURCC('q','t',' ',' ')
+
+G_END_DECLS
+
+#endif /* __FTYP_CC_H__ */
diff --git a/gst/qtmux/gstqtmux.c b/gst/qtmux/gstqtmux.c
new file mode 100644
index 00000000..9a181aa9
--- /dev/null
+++ b/gst/qtmux/gstqtmux.c
@@ -0,0 +1,1823 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ * Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+/**
+ * SECTION:gstqtmux
+ * @short_description: Muxer for quicktime(.mov) files
+ *
+ * <refsect2>
+ * <para>
+ * This element merges streams (audio and video) into qt(.mov) files.
+ * </para>
+ * <title>Example pipelines</title>
+ * <para>
+ * <programlisting>
+ * gst-launch v4l2src num-buffers=500 ! video/x-raw-yuv,width=320,height=240 ! ffmpegcolorspace ! qtmux ! filesink location=video.mov
+ * </programlisting>
+ * Records a video stream captured from a v4l2 device and muxes it into a qt file.
+ * </para>
+ * </refsect2>
+ *
+ * Last reviewed on 2008-08-27
+ */
+
+/*
+ * Based on avimux
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <glib/gstdio.h>
+
+#include <gst/gst.h>
+#include <gst/base/gstcollectpads.h>
+
+#include "gstqtmux.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_qt_mux_debug);
+#define GST_CAT_DEFAULT gst_qt_mux_debug
+
+/* QTMux signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  PROP_0,
+  PROP_LARGE_FILE,
+  PROP_MOVIE_TIMESCALE,
+  PROP_DO_CTTS,
+  PROP_FLAVOR,
+  PROP_FAST_START,
+  PROP_FAST_START_TEMP_FILE
+};
+
+#define MDAT_ATOM_HEADER_SIZE           16
+#define DEFAULT_LARGE_FILE              FALSE
+#define DEFAULT_MOVIE_TIMESCALE         600
+#define DEFAULT_DO_CTTS                 FALSE
+#define DEFAULT_FAST_START              FALSE
+#define DEFAULT_FAST_START_TEMP_FILE    NULL
+
+static void gst_qt_mux_finalize (GObject * object);
+
+static GstStateChangeReturn gst_qt_mux_change_state (GstElement * element,
+    GstStateChange transition);
+
+/* property functions */
+static void gst_qt_mux_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_qt_mux_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec);
+
+/* pad functions */
+static GstPad *gst_qt_mux_request_new_pad (GstElement * element,
+    GstPadTemplate * templ, const gchar * name);
+static void gst_qt_mux_release_pad (GstElement * element, GstPad * pad);
+
+/* event */
+static gboolean gst_qt_mux_sink_event (GstPad * pad, GstEvent * event);
+
+static GstFlowReturn gst_qt_mux_collected (GstCollectPads * pads,
+    gpointer user_data);
+static GstFlowReturn gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad,
+    GstBuffer * buf);
+
+static GstElementClass *parent_class = NULL;
+
+static void
+gst_qt_mux_base_init (gpointer g_class)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+  GstQTMuxClass *klass = (GstQTMuxClass *) g_class;
+  GstQTMuxClassParams *params;
+  GstElementDetails details;
+  GstPadTemplate *videosinktempl, *audiosinktempl, *srctempl;
+
+  params =
+      (GstQTMuxClassParams *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (g_class),
+      GST_QT_MUX_PARAMS_QDATA);
+  g_assert (params != NULL);
+
+  /* construct the element details struct */
+  details.longname = g_strdup_printf ("%s Muxer", params->prop->long_name);
+  details.klass = g_strdup ("Codec/Muxer");
+  details.description =
+      g_strdup_printf ("Multiplex audio and video into a %s file",
+      params->prop->long_name);
+  details.author = "Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>";
+  gst_element_class_set_details (element_class, &details);
+  g_free (details.longname);
+  g_free (details.klass);
+  g_free (details.description);
+
+  /* pad templates */
+  srctempl = gst_pad_template_new ("src", GST_PAD_SRC,
+      GST_PAD_ALWAYS, params->src_caps);
+  gst_element_class_add_pad_template (element_class, srctempl);
+
+  if (params->audio_sink_caps) {
+    audiosinktempl = gst_pad_template_new ("audio_%d",
+        GST_PAD_SINK, GST_PAD_REQUEST, params->audio_sink_caps);
+    gst_element_class_add_pad_template (element_class, audiosinktempl);
+  }
+
+  if (params->video_sink_caps) {
+    videosinktempl = gst_pad_template_new ("video_%d",
+        GST_PAD_SINK, GST_PAD_REQUEST, params->video_sink_caps);
+    gst_element_class_add_pad_template (element_class, videosinktempl);
+  }
+
+  klass->format = params->prop->format;
+}
+
+static void
+gst_qt_mux_class_init (GstQTMuxClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  parent_class = g_type_class_peek_parent (klass);
+
+  gobject_class->finalize = gst_qt_mux_finalize;
+  gobject_class->get_property = gst_qt_mux_get_property;
+  gobject_class->set_property = gst_qt_mux_set_property;
+
+  g_object_class_install_property (gobject_class, PROP_LARGE_FILE,
+      g_param_spec_boolean ("large-file", "Support for large files",
+          "Uses 64bits to some fields instead of 32bits, "
+          "providing support for large files",
+          DEFAULT_LARGE_FILE, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, PROP_MOVIE_TIMESCALE,
+      g_param_spec_uint ("movie-timescale", "Movie timescale",
+          "Timescale to use in the movie (units per second)",
+          1, G_MAXUINT32, DEFAULT_MOVIE_TIMESCALE,
+          G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+  g_object_class_install_property (gobject_class, PROP_DO_CTTS,
+      g_param_spec_boolean ("presentation-time",
+          "Include presentation-time info",
+          "Calculate and include presentation/composition time (in addition to decoding time)"
+          " (use with caution)", DEFAULT_DO_CTTS,
+          G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+  g_object_class_install_property (gobject_class, PROP_FAST_START,
+      g_param_spec_boolean ("faststart", "Format file to faststart",
+          "If the file should be formated for faststart (headers first). ",
+          DEFAULT_FAST_START, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, PROP_FAST_START_TEMP_FILE,
+      g_param_spec_string ("faststart-file", "File to use for storing buffers",
+          "File that will be used temporarily to store data from the stream when "
+          "creating a faststart file. If null a filepath will be created automatically",
+          DEFAULT_FAST_START_TEMP_FILE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
+  gstelement_class->request_new_pad =
+      GST_DEBUG_FUNCPTR (gst_qt_mux_request_new_pad);
+  gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_qt_mux_change_state);
+  gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_qt_mux_release_pad);
+}
+
+static void
+gst_qt_mux_pad_reset (GstQTPad * qtpad)
+{
+  qtpad->fourcc = 0;
+  qtpad->is_out_of_order = FALSE;
+  qtpad->sample_size = 0;
+  qtpad->sync = FALSE;
+  qtpad->last_dts = 0;
+
+  if (qtpad->last_buf)
+    gst_buffer_replace (&qtpad->last_buf, NULL);
+
+  /* reference owned elsewhere */
+  qtpad->trak = NULL;
+}
+
+/*
+ * Takes GstQTMux back to its initial state
+ */
+static void
+gst_qt_mux_reset (GstQTMux * qtmux, gboolean alloc)
+{
+  GSList *walk;
+
+  qtmux->state = GST_QT_MUX_STATE_NONE;
+  qtmux->header_size = 0;
+  qtmux->mdat_size = 0;
+  qtmux->mdat_pos = 0;
+
+  if (qtmux->ftyp) {
+    atom_ftyp_free (qtmux->ftyp);
+    qtmux->ftyp = NULL;
+  }
+  if (qtmux->moov) {
+    atom_moov_free (qtmux->moov);
+    qtmux->moov = NULL;
+  }
+  if (qtmux->tags) {
+    gst_tag_list_free (qtmux->tags);
+    qtmux->tags = NULL;
+  }
+  if (qtmux->fast_start_file) {
+    fclose (qtmux->fast_start_file);
+    qtmux->fast_start_file = NULL;
+  }
+
+  /* reset pad data */
+  for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
+    GstQTPad *qtpad = (GstQTPad *) walk->data;
+    gst_qt_mux_pad_reset (qtpad);
+
+    /* hm, moov_free above yanked the traks away from us,
+     * so do not free, but do clear */
+    qtpad->trak = NULL;
+  }
+
+  if (alloc) {
+    qtmux->moov = atom_moov_new (qtmux->context);
+  }
+}
+
+static void
+gst_qt_mux_init (GstQTMux * qtmux, GstQTMuxClass * qtmux_klass)
+{
+  GstElementClass *klass = GST_ELEMENT_CLASS (qtmux_klass);
+  GstPadTemplate *templ;
+  GstCaps *caps;
+
+  templ = gst_element_class_get_pad_template (klass, "src");
+  qtmux->srcpad = gst_pad_new_from_template (templ, "src");
+  caps = gst_caps_copy (gst_pad_get_pad_template_caps (qtmux->srcpad));
+  gst_pad_set_caps (qtmux->srcpad, caps);
+  gst_caps_unref (caps);
+  gst_pad_use_fixed_caps (qtmux->srcpad);
+  gst_element_add_pad (GST_ELEMENT (qtmux), qtmux->srcpad);
+
+  qtmux->collect = gst_collect_pads_new ();
+  gst_collect_pads_set_function (qtmux->collect,
+      (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_qt_mux_collected), qtmux);
+
+  /* properties set to default upon construction */
+
+  /* always need this */
+  qtmux->context =
+      atoms_context_new (gst_qt_mux_map_format_to_flavor (qtmux_klass->format));
+
+  /* internals to initial state */
+  gst_qt_mux_reset (qtmux, TRUE);
+}
+
+
+static void
+gst_qt_mux_finalize (GObject * object)
+{
+  GstQTMux *qtmux = GST_QT_MUX_CAST (object);
+
+  gst_qt_mux_reset (qtmux, FALSE);
+
+  if (qtmux->fast_start_file_path)
+    g_free (qtmux->fast_start_file_path);
+
+  atoms_context_free (qtmux->context);
+  gst_object_unref (qtmux->collect);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+/* FIXME approach below is pretty Apple/MOV/MP4/iTunes specific,
+ * and as such does not comply with e.g. 3GPP specs */
+
+/*
+ * Struct to record mappings from gstreamer tags to fourcc codes
+ */
+typedef struct _GstTagToFourcc
+{
+  guint32 fourcc;
+  const gchar *gsttag;
+  const gchar *gsttag2;
+} GstTagToFourcc;
+
+/* tag list tags to fourcc matching */
+static const GstTagToFourcc tag_matches[] = {
+  {FOURCC__alb, GST_TAG_ALBUM,},
+  {FOURCC__ART, GST_TAG_ARTIST,},
+  {FOURCC__cmt, GST_TAG_COMMENT,},
+  {FOURCC__wrt, GST_TAG_COMPOSER,},
+  {FOURCC__gen, GST_TAG_GENRE,},
+  {FOURCC__nam, GST_TAG_TITLE,},
+  {FOURCC__des, GST_TAG_DESCRIPTION,},
+  {FOURCC__too, GST_TAG_ENCODER,},
+  {FOURCC_cprt, GST_TAG_COPYRIGHT,},
+  {FOURCC_keyw, GST_TAG_KEYWORDS,},
+  {FOURCC__day, GST_TAG_DATE,},
+  {FOURCC_tmpo, GST_TAG_BEATS_PER_MINUTE,},
+  {FOURCC_trkn, GST_TAG_TRACK_NUMBER, GST_TAG_TRACK_COUNT},
+  {FOURCC_disk, GST_TAG_ALBUM_VOLUME_NUMBER, GST_TAG_ALBUM_VOLUME_COUNT},
+  {FOURCC_covr, GST_TAG_PREVIEW_IMAGE,},
+  {0, NULL,}
+};
+
+/* qtdemux produces these for atoms it cannot parse */
+#define GST_QT_DEMUX_PRIVATE_TAG "private-qt-tag"
+
+static void
+gst_qt_mux_add_metadata_tags (GstQTMux * qtmux, const GstTagList * list)
+{
+  guint32 fourcc;
+  gint i;
+  const gchar *tag, *tag2;
+
+  for (i = 0; tag_matches[i].fourcc; i++) {
+    fourcc = tag_matches[i].fourcc;
+    tag = tag_matches[i].gsttag;
+    tag2 = tag_matches[i].gsttag2;
+
+    switch (gst_tag_get_type (tag)) {
+        /* strings */
+      case G_TYPE_STRING:
+      {
+        gchar *str;
+
+        if (!gst_tag_list_get_string (list, tag, &str))
+          break;
+        GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s",
+            GST_FOURCC_ARGS (fourcc), str);
+        atom_moov_add_str_tag (qtmux->moov, fourcc, str);
+        g_free (str);
+        break;
+      }
+        /* double */
+      case G_TYPE_DOUBLE:
+      {
+        gdouble value;
+
+        if (!gst_tag_list_get_double (list, tag, &value))
+          break;
+        GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %u",
+            GST_FOURCC_ARGS (fourcc), (gint) value);
+        atom_moov_add_uint_tag (qtmux->moov, fourcc, 21, (gint) value);
+        break;
+      }
+        /* paired unsigned integers */
+      case G_TYPE_UINT:
+      {
+        guint value;
+        guint count;
+
+        if (!gst_tag_list_get_uint (list, tag, &value) ||
+            !gst_tag_list_get_uint (list, tag2, &count))
+          break;
+        GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %u/%u",
+            GST_FOURCC_ARGS (fourcc), value, count);
+        atom_moov_add_uint_tag (qtmux->moov, fourcc, 0,
+            value << 16 | (count & 0xFFFF));
+        break;
+      }
+      default:
+      {
+        if (gst_tag_get_type (tag) == GST_TYPE_DATE) {
+          GDate *date;
+          GDateYear year;
+          GDateMonth month;
+          GDateDay day;
+          gchar *str;
+
+          if (!gst_tag_list_get_date (list, tag, &date))
+            break;
+          year = g_date_get_year (date);
+          month = g_date_get_month (date);
+          day = g_date_get_day (date);
+
+          if (year == G_DATE_BAD_YEAR && month == G_DATE_BAD_MONTH &&
+              day == G_DATE_BAD_DAY) {
+            GST_WARNING_OBJECT (qtmux, "invalid date in tag");
+            break;
+          }
+
+          str = g_strdup_printf ("%u-%u-%u", year, month, day);
+          GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s",
+              GST_FOURCC_ARGS (fourcc), str);
+          atom_moov_add_str_tag (qtmux->moov, fourcc, str);
+        } else if (gst_tag_get_type (tag) == GST_TYPE_BUFFER) {
+          GValue value = { 0, };
+          GstBuffer *buf;
+          GstCaps *caps;
+          GstStructure *structure;
+          gint flags = 0;
+
+          if (!gst_tag_list_copy_value (&value, list, tag))
+            break;
+
+          buf = gst_value_get_buffer (&value);
+          if (!buf)
+            goto done;
+
+          caps = gst_buffer_get_caps (buf);
+          if (!caps) {
+            GST_WARNING_OBJECT (qtmux, "preview image without caps");
+            goto done;
+          }
+
+          GST_DEBUG_OBJECT (qtmux, "preview image caps %" GST_PTR_FORMAT, caps);
+
+          structure = gst_caps_get_structure (caps, 0);
+          if (gst_structure_has_name (structure, "image/jpeg"))
+            flags = 13;
+          else if (gst_structure_has_name (structure, "image/png"))
+            flags = 14;
+          gst_caps_unref (caps);
+
+          if (!flags) {
+            GST_WARNING_OBJECT (qtmux, "preview image format not supported");
+            goto done;
+          }
+
+          GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT
+              " -> image size %d", GST_FOURCC_ARGS (fourcc),
+              GST_BUFFER_SIZE (buf));
+          atom_moov_add_tag (qtmux->moov, fourcc, flags, GST_BUFFER_DATA (buf),
+              GST_BUFFER_SIZE (buf));
+        done:
+          g_value_unset (&value);
+        } else
+          g_assert_not_reached ();
+        break;
+      }
+    }
+  }
+
+  /* add unparsed blobs if present */
+  if (gst_tag_exists (GST_QT_DEMUX_PRIVATE_TAG)) {
+    guint num_tags;
+
+    num_tags = gst_tag_list_get_tag_size (list, GST_QT_DEMUX_PRIVATE_TAG);
+    for (i = 0; i < num_tags; ++i) {
+      const GValue *val;
+      GstBuffer *buf;
+      GstCaps *caps = NULL;
+
+      val = gst_tag_list_get_value_index (list, GST_QT_DEMUX_PRIVATE_TAG, i);
+      buf = (GstBuffer *) gst_value_get_mini_object (val);
+
+      if (buf && (caps = gst_buffer_get_caps (buf))) {
+        GstStructure *s;
+        const gchar *style = NULL;
+
+        GST_DEBUG_OBJECT (qtmux, "Found private tag %d/%d; size %d, caps %"
+            GST_PTR_FORMAT, i, num_tags, GST_BUFFER_SIZE (buf), caps);
+        s = gst_caps_get_structure (caps, 0);
+        if (s && (style = gst_structure_get_string (s, "style"))) {
+          /* FIXME make into a parameter */
+          if (strcmp (style, "itunes") == 0) {
+            GST_DEBUG_OBJECT (qtmux, "Adding private tag");
+            atom_moov_add_blob_tag (qtmux->moov, GST_BUFFER_DATA (buf),
+                GST_BUFFER_SIZE (buf));
+          }
+        }
+        gst_caps_unref (caps);
+      }
+    }
+  }
+
+  return;
+}
+
+/*
+ * Gets the tagsetter iface taglist and puts the known tags
+ * into the output stream
+ */
+static void
+gst_qt_mux_setup_metadata (GstQTMux * qtmux)
+{
+  const GstTagList *user_tags;
+  GstTagList *mixedtags = NULL;
+  GstTagMergeMode merge_mode;
+
+  user_tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (qtmux));
+  merge_mode = gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (qtmux));
+
+  GST_DEBUG_OBJECT (qtmux, "merging tags, merge mode = %d", merge_mode);
+  GST_LOG_OBJECT (qtmux, "event tags: %" GST_PTR_FORMAT, qtmux->tags);
+  GST_LOG_OBJECT (qtmux, "set   tags: %" GST_PTR_FORMAT, user_tags);
+
+  mixedtags = gst_tag_list_merge (user_tags, qtmux->tags, merge_mode);
+
+  GST_LOG_OBJECT (qtmux, "final tags: %" GST_PTR_FORMAT, mixedtags);
+
+  if (mixedtags && !gst_tag_list_is_empty (mixedtags)) {
+    GST_DEBUG_OBJECT (qtmux, "Parsing tags");
+    gst_qt_mux_add_metadata_tags (qtmux, mixedtags);
+  } else {
+    GST_DEBUG_OBJECT (qtmux, "No tags found");
+  }
+
+  if (mixedtags)
+    gst_tag_list_free (mixedtags);
+
+  return;
+}
+
+static GstFlowReturn
+gst_qt_mux_send_buffer (GstQTMux * qtmux, GstBuffer * buf, guint64 * offset,
+    gboolean mind_fast)
+{
+  GstFlowReturn res;
+  guint8 *data;
+  guint size;
+
+  g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
+
+  data = GST_BUFFER_DATA (buf);
+  size = GST_BUFFER_SIZE (buf);
+
+  GST_LOG_OBJECT (qtmux, "sending buffer size %d", size);
+
+  if (mind_fast && qtmux->fast_start_file) {
+    gint ret;
+
+    GST_LOG_OBJECT (qtmux, "to temporary file");
+    ret = fwrite (data, sizeof (guint8), size, qtmux->fast_start_file);
+    gst_buffer_unref (buf);
+    if (ret != size)
+      goto write_error;
+    else
+      res = GST_FLOW_OK;
+  } else {
+    GST_LOG_OBJECT (qtmux, "downstream");
+
+    gst_buffer_set_caps (buf, GST_PAD_CAPS (qtmux->srcpad));
+    res = gst_pad_push (qtmux->srcpad, buf);
+  }
+
+  if (offset)
+    *offset += size;
+
+  return res;
+
+  /* ERRORS */
+write_error:
+  {
+    GST_ELEMENT_ERROR (qtmux, RESOURCE, WRITE,
+        ("Failed to write to temporary file"), GST_ERROR_SYSTEM);
+    return GST_FLOW_ERROR;
+  }
+}
+
+static GstFlowReturn
+gst_qt_mux_send_buffered_data (GstQTMux * qtmux, guint64 * offset)
+{
+  GstFlowReturn ret = GST_FLOW_OK;
+  GstBuffer *buf = NULL;
+
+  if (fflush (qtmux->fast_start_file))
+    goto flush_failed;
+
+  if (fseek (qtmux->fast_start_file, 0, SEEK_SET))
+    goto seek_failed;
+
+  /* hm, this could all take a really really long time,
+   * but there may not be another way to get moov atom first
+   * (somehow optimize copy?) */
+  GST_DEBUG_OBJECT (qtmux, "Sending buffered data");
+  while (ret == GST_FLOW_OK) {
+    gint r;
+    const int bufsize = 4096;
+
+    buf = gst_buffer_new_and_alloc (bufsize);
+    r = fread (GST_BUFFER_DATA (buf), sizeof (guint8), bufsize,
+        qtmux->fast_start_file);
+    if (r == 0)
+      break;
+    GST_BUFFER_SIZE (buf) = r;
+    GST_LOG_OBJECT (qtmux, "Pushing buffered buffer of size %d", r);
+    ret = gst_qt_mux_send_buffer (qtmux, buf, offset, FALSE);
+    buf = NULL;
+  }
+  if (buf)
+    gst_buffer_unref (buf);
+
+exit:
+  /* best cleaning up effort, eat possible error */
+  fclose (qtmux->fast_start_file);
+  qtmux->fast_start_file = NULL;
+
+  /* FIXME maybe delete temporary file, or let the system handle that ? */
+
+  return ret;
+
+  /* ERRORS */
+flush_failed:
+  {
+    GST_ELEMENT_ERROR (qtmux, RESOURCE, WRITE,
+        ("Failed to flush temporary file"), GST_ERROR_SYSTEM);
+    ret = GST_FLOW_ERROR;
+    goto exit;
+  }
+seek_failed:
+  {
+    GST_ELEMENT_ERROR (qtmux, RESOURCE, SEEK,
+        ("Failed to seek temporary file"), GST_ERROR_SYSTEM);
+    ret = GST_FLOW_ERROR;
+    goto exit;
+  }
+}
+
+/*
+ * Sends the initial mdat atom fields (size fields and fourcc type),
+ * the subsequent buffers are considered part of it's data.
+ * As we can't predict the amount of data that we are going to place in mdat
+ * we need to record the position of the size field in the stream so we can
+ * seek back to it later and update when the streams have finished.
+ */
+static GstFlowReturn
+gst_qt_mux_send_mdat_header (GstQTMux * qtmux, guint64 * off, guint64 size)
+{
+  Atom *node_header;
+  GstBuffer *buf;
+  guint8 *data = NULL;
+  guint64 offset = 0;
+
+  GST_DEBUG_OBJECT (qtmux, "Sending mdat's atom header, "
+      "size %" G_GUINT64_FORMAT, size);
+
+  node_header = g_malloc0 (sizeof (Atom));
+  node_header->type = FOURCC_mdat;
+  /* use extended size */
+  node_header->size = 1;
+  node_header->extended_size = 0;
+  if (size)
+    node_header->extended_size = size;
+
+  size = offset = 0;
+  if (atom_copy_data (node_header, &data, &size, &offset) == 0)
+    goto serialize_error;
+
+  buf = gst_buffer_new ();
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+  GST_BUFFER_SIZE (buf) = offset;
+
+  g_free (node_header);
+
+  GST_LOG_OBJECT (qtmux, "Pushing mdat start");
+  return gst_qt_mux_send_buffer (qtmux, buf, off, FALSE);
+
+  /* ERRORS */
+serialize_error:
+  {
+    GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
+        ("Failed to serialize ftyp"));
+    return GST_FLOW_ERROR;
+  }
+}
+
+/*
+ * We get the position of the mdat size field, seek back to it
+ * and overwrite with the real value
+ */
+static GstFlowReturn
+gst_qt_mux_update_mdat_size (GstQTMux * qtmux, guint64 mdat_pos,
+    guint64 mdat_size, guint64 * offset)
+{
+  GstEvent *event;
+  GstBuffer *buf;
+
+  /* seek and rewrite the header */
+  event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
+      mdat_pos, GST_CLOCK_TIME_NONE, 0);
+  gst_pad_push_event (qtmux->srcpad, event);
+
+  buf = gst_buffer_new_and_alloc (sizeof (guint64));
+  GST_WRITE_UINT64_BE (GST_BUFFER_DATA (buf), mdat_size);
+
+  return gst_qt_mux_send_buffer (qtmux, buf, offset, FALSE);
+}
+
+static GstFlowReturn
+gst_qt_mux_stop_file (GstQTMux * qtmux)
+{
+  gboolean ret = GST_FLOW_OK;
+  GstBuffer *buffer = NULL;
+  guint64 offset = 0, size = 0;
+  guint8 *data;
+  GSList *walk;
+  gboolean large_file;
+  guint32 timescale;
+
+  GST_DEBUG_OBJECT (qtmux, "Updating remaining values and sending last data");
+
+  /* pushing last buffers for each pad */
+  for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
+    GstCollectData *cdata = (GstCollectData *) walk->data;
+    GstQTPad *qtpad = (GstQTPad *) cdata;
+
+    /* send last buffer */
+    GST_DEBUG_OBJECT (qtmux, "Sending the last buffer for pad %s",
+        GST_PAD_NAME (qtpad->collect.pad));
+    ret = gst_qt_mux_add_buffer (qtmux, qtpad, NULL);
+    if (ret != GST_FLOW_OK)
+      GST_DEBUG_OBJECT (qtmux, "Failed to send last buffer for %s, "
+          "flow return: %s", GST_PAD_NAME (qtpad->collect.pad),
+          gst_flow_get_name (ret));
+  }
+
+  GST_OBJECT_LOCK (qtmux);
+  timescale = qtmux->timescale;
+  large_file = qtmux->large_file;
+  GST_OBJECT_UNLOCK (qtmux);
+
+  /* inform lower layers of our property wishes, and determine duration.
+   * Let moov take care of this using its list of traks;
+   * so that released pads are also included */
+  GST_DEBUG_OBJECT (qtmux, "Large file support: %d", large_file);
+  GST_DEBUG_OBJECT (qtmux, "Updating timescale to %" G_GUINT32_FORMAT,
+      timescale);
+  atom_moov_update_timescale (qtmux->moov, timescale);
+  atom_moov_set_64bits (qtmux->moov, large_file);
+  atom_moov_update_duration (qtmux->moov);
+
+  /* tags into file metadata */
+  gst_qt_mux_setup_metadata (qtmux);
+
+  /* if faststart, update the offset of the atoms in the movie with the offset
+   * that the movie headers before mdat will cause */
+  if (qtmux->fast_start_file) {
+    /* copy into NULL to obtain size */
+    offset = size = 0;
+    if (!atom_moov_copy_data (qtmux->moov, NULL, &size, &offset))
+      goto serialize_error;
+    GST_DEBUG_OBJECT (qtmux, "calculated moov atom size %" G_GUINT64_FORMAT,
+        size);
+    offset += qtmux->header_size + MDAT_ATOM_HEADER_SIZE;
+  } else
+    offset = qtmux->header_size;
+  atom_moov_chunks_add_offset (qtmux->moov, offset);
+
+  /* serialize moov */
+  offset = size = 0;
+  data = NULL;
+  GST_LOG_OBJECT (qtmux, "Copying movie header into buffer");
+  ret = atom_moov_copy_data (qtmux->moov, &data, &size, &offset);
+  if (!ret)
+    goto serialize_error;
+
+  buffer = gst_buffer_new ();
+  GST_BUFFER_DATA (buffer) = GST_BUFFER_MALLOCDATA (buffer) = data;
+  GST_BUFFER_SIZE (buffer) = offset;
+  /* note: as of this point, we no longer care about tracking written data size,
+   * since there is no more use for it anyway */
+  GST_DEBUG_OBJECT (qtmux, "Pushing movie atoms");
+  gst_qt_mux_send_buffer (qtmux, buffer, NULL, FALSE);
+
+  /* total mdat size as of now also includes the atom header */
+  qtmux->mdat_size += MDAT_ATOM_HEADER_SIZE;
+  /* if needed, send mdat atom and move buffered data into it */
+  if (qtmux->fast_start_file) {
+    /* mdat size = accumulated (buffered data) + mdat atom header */
+    ret = gst_qt_mux_send_mdat_header (qtmux, NULL, qtmux->mdat_size);
+    if (ret != GST_FLOW_OK)
+      return ret;
+    ret = gst_qt_mux_send_buffered_data (qtmux, NULL);
+    if (ret != GST_FLOW_OK)
+      return ret;
+  } else {
+    /* mdata needs update iff not using faststart */
+    GST_DEBUG_OBJECT (qtmux, "updating mdata size");
+    ret = gst_qt_mux_update_mdat_size (qtmux, qtmux->mdat_pos,
+        qtmux->mdat_size, NULL);
+    /* note; no seeking back to the end of file is done,
+     * since we longer write anything anyway */
+  }
+
+  return ret;
+
+  /* ERRORS */
+serialize_error:
+  {
+    gst_buffer_unref (buffer);
+    GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
+        ("Failed to serialize moov"));
+    return GST_FLOW_ERROR;
+  }
+}
+
+static GstFlowReturn
+gst_qt_mux_send_ftyp (GstQTMux * qtmux, guint64 * off)
+{
+  GstBuffer *buf;
+  guint64 size = 0, offset = 0;
+  guint8 *data = NULL;
+
+  GST_DEBUG_OBJECT (qtmux, "Sending ftyp atom");
+
+  if (!atom_ftyp_copy_data (qtmux->ftyp, &data, &size, &offset))
+    goto serialize_error;
+
+  buf = gst_buffer_new ();
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+  GST_BUFFER_SIZE (buf) = offset;
+
+  GST_LOG_OBJECT (qtmux, "Pushing ftyp");
+  return gst_qt_mux_send_buffer (qtmux, buf, off, FALSE);
+
+  /* ERRORS */
+serialize_error:
+  {
+    GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
+        ("Failed to serialize ftyp"));
+    return GST_FLOW_ERROR;
+  }
+}
+
+static GstFlowReturn
+gst_qt_mux_start_file (GstQTMux * qtmux)
+{
+  GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
+  GstFlowReturn ret = GST_FLOW_OK;
+  guint32 major, version;
+  GList *comp;
+  GstBuffer *prefix;
+
+  GST_DEBUG_OBJECT (qtmux, "starting file");
+
+  /* let downstream know we think in BYTES and expect to do seeking later on */
+  gst_pad_push_event (qtmux->srcpad,
+      gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0));
+
+  /* init and send context and ftyp based on current property state */
+  if (qtmux->ftyp)
+    atom_ftyp_free (qtmux->ftyp);
+  gst_qt_mux_map_format_to_header (qtmux_klass->format, &prefix, &major,
+      &version, &comp, qtmux->moov);
+  qtmux->ftyp = atom_ftyp_new (qtmux->context, major, version, comp);
+  if (comp)
+    g_list_free (comp);
+  if (prefix) {
+    ret = gst_qt_mux_send_buffer (qtmux, prefix, &qtmux->header_size, FALSE);
+    if (ret != GST_FLOW_OK)
+      goto exit;
+  }
+  ret = gst_qt_mux_send_ftyp (qtmux, &qtmux->header_size);
+  if (ret != GST_FLOW_OK)
+    goto exit;
+
+  /* send mdat header if already needed, and mark position for later update */
+  GST_OBJECT_LOCK (qtmux);
+  if (qtmux->fast_start) {
+    qtmux->fast_start_file = g_fopen (qtmux->fast_start_file_path, "wb+");
+    if (!qtmux->fast_start_file)
+      goto open_failed;
+  } else {
+    ret = gst_qt_mux_send_mdat_header (qtmux, &qtmux->header_size, 0);
+    /* mdat size position = current header pos - extended header size */
+    qtmux->mdat_pos = qtmux->header_size - sizeof (guint64);
+  }
+  GST_OBJECT_UNLOCK (qtmux);
+
+exit:
+  return ret;
+
+  /* ERRORS */
+open_failed:
+  {
+    GST_ELEMENT_ERROR (qtmux, RESOURCE, OPEN_READ_WRITE,
+        (("Could not open temporary file \"%s\""), qtmux->fast_start_file_path),
+        GST_ERROR_SYSTEM);
+    GST_OBJECT_UNLOCK (qtmux);
+    return GST_FLOW_ERROR;
+  }
+}
+
+/*
+ * Here we push the buffer and update the tables in the track atoms
+ */
+static GstFlowReturn
+gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
+{
+  GstBuffer *last_buf = NULL;
+  GstClockTime duration;
+  guint nsamples, sample_size;
+  guint64 scaled_duration, chunk_offset;
+  guint64 last_dts;
+  gint64 pts_offset = 0;
+  gboolean sync = FALSE, do_pts = FALSE;
+
+  if (!pad->fourcc)
+    goto not_negotiated;
+
+  last_buf = pad->last_buf;
+  if (last_buf == NULL) {
+#ifndef GST_DISABLE_GST_DEBUG
+    if (buf == NULL) {
+      GST_DEBUG_OBJECT (qtmux, "Pad %s has no previous buffer stored and "
+          "received NULL buffer, doing nothing",
+          GST_PAD_NAME (pad->collect.pad));
+    } else {
+      GST_LOG_OBJECT (qtmux,
+          "Pad %s has no previous buffer stored, storing now",
+          GST_PAD_NAME (pad->collect.pad));
+    }
+#endif
+    pad->last_buf = buf;
+    return GST_FLOW_OK;
+  } else
+    gst_buffer_ref (last_buf);
+
+  /* fall back to duration if:
+   * - last bufer
+   * - this format has out of order buffers (e.g. MPEG-4),
+   * - lack of valid time forces fall back */
+  if (buf == NULL || pad->is_out_of_order ||
+      !GST_BUFFER_TIMESTAMP_IS_VALID (last_buf) ||
+      !GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
+    if (!GST_BUFFER_DURATION_IS_VALID (last_buf)) {
+      /* be forgiving for some possibly last upstream flushed buffer */
+      if (buf)
+        goto no_time;
+      GST_WARNING_OBJECT (qtmux, "no duration for last buffer");
+      /* iso spec recommends some small value, try 0 */
+      duration = 0;
+    } else
+      duration = GST_BUFFER_DURATION (last_buf);
+  } else {
+    duration = GST_BUFFER_TIMESTAMP (buf) - GST_BUFFER_TIMESTAMP (last_buf);
+  }
+
+  gst_buffer_replace (&pad->last_buf, buf);
+
+  last_dts = gst_util_uint64_scale (pad->last_dts,
+      atom_trak_get_timescale (pad->trak), GST_SECOND);
+
+  /* raw audio has many samples per buffer (= chunk) */
+  if (pad->sample_size) {
+    sample_size = pad->sample_size;
+    if (GST_BUFFER_SIZE (last_buf) % sample_size != 0)
+      goto fragmented_sample;
+    /* note: qt raw audio storage warps it implicitly into a timewise
+     * perfect stream, discarding buffer times */
+    nsamples = GST_BUFFER_SIZE (last_buf) / sample_size;
+    duration = GST_BUFFER_DURATION (last_buf) / nsamples;
+    /* timescale = samplerate */
+    scaled_duration = 1;
+  } else {
+    nsamples = 1;
+    sample_size = GST_BUFFER_SIZE (last_buf);
+    /* first convert intended timestamp (in GstClockTime resolution) to
+     * trak timescale, then derive delta;
+     * this ensures sums of (scale)delta add up to converted timestamp,
+     * which only deviates at most 1/scale from timestamp itself */
+    scaled_duration = gst_util_uint64_scale (pad->last_dts + duration,
+        atom_trak_get_timescale (pad->trak), GST_SECOND) - last_dts;
+  }
+  pad->last_dts += duration * nsamples;
+  chunk_offset = qtmux->mdat_size;
+
+  GST_LOG_OBJECT (qtmux,
+      "Pad (%s) dts updated to %" GST_TIME_FORMAT,
+      GST_PAD_NAME (pad->collect.pad), GST_TIME_ARGS (pad->last_dts));
+  GST_LOG_OBJECT (qtmux,
+      "Adding %d samples to track, duration: %" G_GUINT64_FORMAT
+      " size: %" G_GUINT32_FORMAT " chunk offset: %" G_GUINT64_FORMAT,
+      nsamples, scaled_duration, sample_size, chunk_offset);
+
+  /* might be a sync sample */
+  if (pad->sync &&
+      !GST_BUFFER_FLAG_IS_SET (last_buf, GST_BUFFER_FLAG_DELTA_UNIT)) {
+    GST_LOG_OBJECT (qtmux, "Adding new sync sample entry for track of pad %s",
+        GST_PAD_NAME (pad->collect.pad));
+    sync = TRUE;
+  }
+
+  /* optionally calculate ctts entry values
+   * (if composition-time expected different from decoding-time) */
+  /* really not recommended:
+   * - decoder typically takes care of dts/pts issues
+   * - in case of out-of-order, dts may only be determined as above
+   *   (e.g. sum of duration), which may be totally different from
+   *   buffer timestamps in case of multiple segment, non-perfect streams
+   *  (and just perhaps maybe with some luck segment_to_running_time
+   *   or segment_to_media_time might get near to it) */
+  if (qtmux->do_ctts && pad->is_out_of_order) {
+    guint64 pts;
+
+    pts = gst_util_uint64_scale (GST_BUFFER_TIMESTAMP (last_buf),
+        atom_trak_get_timescale (pad->trak), GST_SECOND);
+    pts_offset = (gint64) (pts - last_dts);
+    do_pts = TRUE;
+    GST_LOG_OBJECT (qtmux, "Adding ctts entry for pad %s: %" G_GUINT64_FORMAT,
+        GST_PAD_NAME (pad->collect.pad), pts_offset);
+  }
+
+  /* now we go and register this buffer/sample all over */
+  /* note that a new chunk is started each time (not fancy but works) */
+  atom_trak_add_samples (pad->trak, nsamples, scaled_duration, sample_size,
+      chunk_offset, sync, do_pts, pts_offset);
+
+  if (buf)
+    gst_buffer_unref (buf);
+
+  return gst_qt_mux_send_buffer (qtmux, last_buf, &qtmux->mdat_size, TRUE);
+
+  /* ERRORS */
+bail:
+  {
+    if (buf)
+      gst_buffer_unref (buf);
+    gst_buffer_unref (last_buf);
+    return GST_FLOW_ERROR;
+  }
+no_time:
+  {
+    GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
+        ("Failed to determine time to mux."));
+    goto bail;
+  }
+fragmented_sample:
+  {
+    GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
+        ("Audio buffer contains fragmented sample."));
+    goto bail;
+  }
+not_negotiated:
+  {
+    GST_ELEMENT_ERROR (qtmux, CORE, NEGOTIATION, (NULL),
+        ("format wasn't negotiated before buffer flow on pad %s",
+            GST_PAD_NAME (pad->collect.pad)));
+    gst_buffer_unref (buf);
+    return GST_FLOW_NOT_NEGOTIATED;
+  }
+}
+
+static GstFlowReturn
+gst_qt_mux_collected (GstCollectPads * pads, gpointer user_data)
+{
+  GstFlowReturn ret = GST_FLOW_OK;
+  GstQTMux *qtmux = GST_QT_MUX_CAST (user_data);
+  GSList *walk;
+  GstQTPad *best_pad = NULL;
+  GstClockTime time, best_time = GST_CLOCK_TIME_NONE;
+  GstBuffer *buf;
+
+  if (G_UNLIKELY (qtmux->state == GST_QT_MUX_STATE_STARTED)) {
+    if ((ret = gst_qt_mux_start_file (qtmux)) != GST_FLOW_OK)
+      return ret;
+    else
+      qtmux->state = GST_QT_MUX_STATE_DATA;
+  }
+
+  if (G_UNLIKELY (qtmux->state == GST_QT_MUX_STATE_EOS))
+    return GST_FLOW_UNEXPECTED;
+
+  /* select the best buffer */
+  walk = qtmux->collect->data;
+  while (walk) {
+    GstQTPad *pad;
+    GstCollectData *data;
+
+    data = (GstCollectData *) walk->data;
+    pad = (GstQTPad *) data;
+
+    walk = g_slist_next (walk);
+
+    buf = gst_collect_pads_peek (pads, data);
+    if (buf == NULL) {
+      GST_LOG_OBJECT (qtmux, "Pad %s has no buffers",
+          GST_PAD_NAME (pad->collect.pad));
+      continue;
+    }
+    time = GST_BUFFER_TIMESTAMP (buf);
+    gst_buffer_unref (buf);
+
+    if (best_pad == NULL || !GST_CLOCK_TIME_IS_VALID (time) ||
+        (GST_CLOCK_TIME_IS_VALID (best_time) && time < best_time)) {
+      best_pad = pad;
+      best_time = time;
+    }
+  }
+
+  if (best_pad != NULL) {
+    GST_LOG_OBJECT (qtmux, "selected pad %s with time %" GST_TIME_FORMAT,
+        GST_PAD_NAME (best_pad->collect.pad), GST_TIME_ARGS (best_time));
+    buf = gst_collect_pads_pop (pads, &best_pad->collect);
+    ret = gst_qt_mux_add_buffer (qtmux, best_pad, buf);
+  } else {
+    ret = gst_qt_mux_stop_file (qtmux);
+    if (ret == GST_FLOW_OK) {
+      gst_pad_push_event (qtmux->srcpad, gst_event_new_eos ());
+      ret = GST_FLOW_UNEXPECTED;
+    }
+    qtmux->state = GST_QT_MUX_STATE_EOS;
+  }
+
+  return ret;
+}
+
+static gboolean
+gst_qt_mux_audio_sink_set_caps (GstPad * pad, GstCaps * caps)
+{
+  GstQTMux *qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
+  GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
+  GstQTPad *qtpad = NULL;
+  GstStructure *structure;
+  const gchar *mimetype;
+  gint rate, channels;
+  const GValue *value = NULL;
+  const GstBuffer *codec_data = NULL;
+  GstQTMuxFormat format;
+  AudioSampleEntry entry = { 0, };
+  AtomInfo *ext_atom = NULL;
+  gint constant_size = 0;
+  guint esds_type = 0;
+
+  /* find stream data */
+  qtpad = (GstQTPad *) gst_pad_get_element_private (pad);
+  g_assert (qtpad);
+
+  /* does not go well to renegotiate stream mid-way */
+  if (qtpad->fourcc)
+    goto refuse_renegotiation;
+
+  GST_DEBUG_OBJECT (qtmux, "%s:%s, caps=%" GST_PTR_FORMAT,
+      GST_DEBUG_PAD_NAME (pad), caps);
+
+  format = qtmux_klass->format;
+  structure = gst_caps_get_structure (caps, 0);
+  mimetype = gst_structure_get_name (structure);
+
+  /* common info */
+  if (!gst_structure_get_int (structure, "channels", &channels) ||
+      !gst_structure_get_int (structure, "rate", &rate)) {
+    goto refuse_caps;
+  }
+
+  /* optional */
+  value = gst_structure_get_value (structure, "codec_data");
+  if (value != NULL)
+    codec_data = gst_value_get_buffer (value);
+
+  qtpad->is_out_of_order = FALSE;
+
+  /* set common properties */
+  entry.sample_rate = rate;
+  entry.channels = channels;
+  /* default */
+  entry.sample_size = 16;
+  /* this is the typical compressed case */
+  if (format == GST_QT_MUX_FORMAT_QT) {
+    entry.version = 1;
+    entry.compression_id = -2;
+  }
+
+  /* now map onto a fourcc, and some extra properties */
+  if (strcmp (mimetype, "audio/mpeg") == 0) {
+    gint mpegversion = 0;
+    gint layer = -1;
+
+    gst_structure_get_int (structure, "mpegversion", &mpegversion);
+    switch (mpegversion) {
+      case 1:
+        gst_structure_get_int (structure, "layer", &layer);
+        switch (layer) {
+          case 3:
+            /* mp3 */
+            /* note: QuickTime player does not like mp3 either way in iso/mp4 */
+            if (format == GST_QT_MUX_FORMAT_QT)
+              entry.fourcc = FOURCC__mp3;
+            else {
+              entry.fourcc = FOURCC_mp4a;
+              esds_type = ESDS_OBJECT_TYPE_MPEG1_P3;
+            }
+            entry.samples_per_packet = 1152;
+            entry.bytes_per_sample = 2;
+            break;
+        }
+        break;
+      case 4:
+        /* AAC */
+        entry.fourcc = FOURCC_mp4a;
+        esds_type = ESDS_OBJECT_TYPE_MPEG4_P3;
+        if (!codec_data || GST_BUFFER_SIZE (codec_data) < 2)
+          GST_WARNING_OBJECT (qtmux, "no (valid) codec_data for AAC audio");
+        else {
+          guint8 profile = GST_READ_UINT8 (GST_BUFFER_DATA (codec_data));
+
+          /* warn if not Low Complexity profile */
+          profile >>= 3;
+          if (profile != 2)
+            GST_WARNING_OBJECT (qtmux,
+                "non-LC AAC may not run well on (Apple) QuickTime/iTunes");
+        }
+        break;
+      default:
+        break;
+    }
+  } else if (strcmp (mimetype, "audio/AMR") == 0) {
+    entry.fourcc = FOURCC_samr;
+    entry.sample_size = 16;
+    entry.samples_per_packet = 160;
+    entry.bytes_per_sample = 2;
+  } else if (strcmp (mimetype, "audio/x-raw-int") == 0) {
+    gint width;
+    gint depth;
+    gint endianness;
+    gboolean sign;
+
+    if (!gst_structure_get_int (structure, "width", &width) ||
+        !gst_structure_get_int (structure, "depth", &depth) ||
+        !gst_structure_get_boolean (structure, "signed", &sign) ||
+        !gst_structure_get_int (structure, "endianness", &endianness)) {
+      GST_DEBUG_OBJECT (qtmux,
+          "broken caps, width/depth/signed/endianness field missing");
+      goto refuse_caps;
+    }
+
+    /* spec has no place for a distinction in these */
+    if (width != depth) {
+      GST_DEBUG_OBJECT (qtmux, "width must be same as depth!");
+      goto refuse_caps;
+    }
+
+    if (sign) {
+      if (endianness == G_LITTLE_ENDIAN)
+        entry.fourcc = FOURCC_sowt;
+      else if (endianness == G_BIG_ENDIAN)
+        entry.fourcc = FOURCC_twos;
+      /* maximum backward compatibility; only new version for > 16 bit */
+      if (depth <= 16)
+        entry.version = 0;
+      /* not compressed in any case */
+      entry.compression_id = 0;
+      /* QT spec says: max at 16 bit even if sample size were actually larger,
+       * however, most players (e.g. QuickTime!) seem to disagree, so ... */
+      entry.sample_size = depth;
+      entry.bytes_per_sample = depth / 8;
+      entry.samples_per_packet = 1;
+      entry.bytes_per_packet = depth / 8;
+      entry.bytes_per_frame = entry.bytes_per_packet * channels;
+    } else {
+      if (width == 8 && depth == 8) {
+        /* fall back to old 8-bit version */
+        entry.fourcc = FOURCC_raw_;
+        entry.version = 0;
+        entry.compression_id = 0;
+        entry.sample_size = 8;
+      } else {
+        GST_DEBUG_OBJECT (qtmux, "non 8-bit PCM must be signed");
+        goto refuse_caps;
+      }
+    }
+    constant_size = (depth / 8) * channels;
+  } else if (strcmp (mimetype, "audio/x-alaw") == 0) {
+    entry.fourcc = FOURCC_alaw;
+    entry.samples_per_packet = 1023;
+    entry.bytes_per_sample = 2;
+  } else if (strcmp (mimetype, "audio/x-mulaw") == 0) {
+    entry.fourcc = FOURCC_ulaw;
+    entry.samples_per_packet = 1023;
+    entry.bytes_per_sample = 2;
+  }
+
+  if (!entry.fourcc)
+    goto refuse_caps;
+
+  /* ok, set the pad info accordingly */
+  qtpad->fourcc = entry.fourcc;
+  qtpad->sample_size = constant_size;
+  /* collect optional extensions */
+  ext_atom = build_sample_entry_extension (qtpad->trak, qtmux->context->flavor,
+      entry.fourcc, esds_type, codec_data);
+  atom_trak_set_audio_type (qtpad->trak, qtmux->context, &entry,
+      entry.sample_rate, ext_atom, constant_size);
+
+  gst_object_unref (qtmux);
+  return TRUE;
+
+  /* ERRORS */
+refuse_caps:
+  {
+    GST_WARNING_OBJECT (qtmux, "pad %s refused caps %" GST_PTR_FORMAT,
+        GST_PAD_NAME (pad), caps);
+    gst_object_unref (qtmux);
+    return FALSE;
+  }
+refuse_renegotiation:
+  {
+    GST_WARNING_OBJECT (qtmux,
+        "pad %s refused renegotiation to %" GST_PTR_FORMAT,
+        GST_PAD_NAME (pad), caps);
+    gst_object_unref (qtmux);
+    return FALSE;
+  }
+}
+
+/* scale rate up or down by factor of 10 to fit into [1000,10000] interval */
+static guint32
+adjust_rate (guint64 rate)
+{
+  while (rate >= 10000)
+    rate /= 10;
+
+  while (rate < 1000)
+    rate *= 10;
+
+  return (guint32) rate;
+}
+
+static gboolean
+gst_qt_mux_video_sink_set_caps (GstPad * pad, GstCaps * caps)
+{
+  GstQTMux *qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
+  GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
+  GstQTPad *qtpad = NULL;
+  GstStructure *structure;
+  const gchar *mimetype;
+  gint width, height, depth = -1;
+  gint framerate_num, framerate_den;
+  guint32 rate;
+  const GValue *value = NULL;
+  const GstBuffer *codec_data = NULL;
+  VisualSampleEntry entry = { 0, };
+  GstQTMuxFormat format;
+  AtomInfo *ext_atom = NULL;
+  guint esds_type = 0;
+  gboolean sync = FALSE;
+
+  /* find stream data */
+  qtpad = (GstQTPad *) gst_pad_get_element_private (pad);
+  g_assert (qtpad);
+
+  /* does not go well to renegotiate stream mid-way */
+  if (qtpad->fourcc)
+    goto refuse_renegotiation;
+
+  GST_DEBUG_OBJECT (qtmux, "%s:%s, caps=%" GST_PTR_FORMAT,
+      GST_DEBUG_PAD_NAME (pad), caps);
+
+  format = qtmux_klass->format;
+  structure = gst_caps_get_structure (caps, 0);
+  mimetype = gst_structure_get_name (structure);
+
+  /* required parts */
+  if (!gst_structure_get_int (structure, "width", &width) ||
+      !gst_structure_get_int (structure, "height", &height) ||
+      !gst_structure_get_fraction (structure, "framerate", &framerate_num,
+          &framerate_den))
+    goto refuse_caps;
+
+  /* optional */
+  gst_structure_get_int (structure, "depth", &depth);
+  value = gst_structure_get_value (structure, "codec_data");
+  if (value != NULL)
+    codec_data = gst_value_get_buffer (value);
+
+  /* FIXME: pixel-aspect-ratio */
+
+  qtpad->is_out_of_order = FALSE;
+
+  /* bring frame numerator into a range that ensures both reasonable resolution
+   * as well as a fair duration */
+  rate = adjust_rate (framerate_num);
+  GST_DEBUG_OBJECT (qtmux, "Rate of video track selected: %" G_GUINT32_FORMAT,
+      rate);
+
+  /* set common properties */
+  entry.width = width;
+  entry.height = height;
+  /* should be OK according to qt and iso spec, override if really needed */
+  entry.color_table_id = -1;
+  entry.frame_count = 1;
+  entry.depth = 24;
+
+  /* sync entries by default */
+  sync = TRUE;
+
+  /* now map onto a fourcc, and some extra properties */
+  if (strcmp (mimetype, "video/x-raw-rgb") == 0) {
+    gint bpp;
+
+    entry.fourcc = FOURCC_raw_;
+    gst_structure_get_int (structure, "bpp", &bpp);
+    entry.depth = bpp;
+    sync = FALSE;
+  } else if (strcmp (mimetype, "video/x-raw-yuv") == 0) {
+    guint32 format = 0;
+
+    sync = FALSE;
+    gst_structure_get_fourcc (structure, "format", &format);
+    switch (format) {
+      case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
+        if (depth == -1)
+          depth = 24;
+        entry.fourcc = FOURCC_2vuy;
+        entry.depth = depth;
+        break;
+    }
+  } else if (strcmp (mimetype, "video/x-h263") == 0) {
+    entry.fourcc = FOURCC_h263;
+  } else if (strcmp (mimetype, "video/x-divx") == 0 ||
+      strcmp (mimetype, "video/mpeg") == 0) {
+    gint version = 0;
+
+    if (strcmp (mimetype, "video/x-divx") == 0) {
+      gst_structure_get_int (structure, "divxversion", &version);
+      version = version == 5 ? 1 : 0;
+    } else {
+      gst_structure_get_int (structure, "mpegversion", &version);
+      version = version == 4 ? 1 : 0;
+    }
+    if (version) {
+      entry.fourcc = FOURCC_mp4v;
+      esds_type = ESDS_OBJECT_TYPE_MPEG4_P2;
+      if (!codec_data)
+        GST_WARNING_OBJECT (qtmux, "no codec_data for MPEG4 video; "
+            "output might not play in Apple QuickTime (try global-headers?)");
+    }
+  } else if (strcmp (mimetype, "video/x-h264") == 0) {
+    entry.fourcc = FOURCC_avc1;
+    qtpad->is_out_of_order = TRUE;
+    if (!codec_data)
+      GST_WARNING_OBJECT (qtmux, "no codec_data in h264 caps");
+  } else if (strcmp (mimetype, "video/x-dv") == 0) {
+    gint version = 0;
+    gboolean pal = TRUE;
+
+    sync = FALSE;
+    if (framerate_num != 25 || framerate_den != 1)
+      pal = FALSE;
+    gst_structure_get_int (structure, "dvversion", &version);
+    /* fall back to typical one */
+    if (!version)
+      version = 25;
+    switch (version) {
+      case 25:
+        if (pal)
+          entry.fourcc = GST_MAKE_FOURCC ('d', 'v', 'c', 'p');
+        else
+          entry.fourcc = GST_MAKE_FOURCC ('d', 'v', 'c', ' ');
+        break;
+      case 50:
+        if (pal)
+          entry.fourcc = GST_MAKE_FOURCC ('d', 'v', '5', 'p');
+        else
+          entry.fourcc = GST_MAKE_FOURCC ('d', 'v', '5', 'n');
+        break;
+      default:
+        GST_WARNING_OBJECT (qtmux, "unrecognized dv version");
+        break;
+    }
+  } else if (strcmp (mimetype, "image/jpeg") == 0) {
+    entry.fourcc = FOURCC_jpeg;
+    sync = FALSE;
+  } else if (strcmp (mimetype, "video/x-qt-part") == 0) {
+    guint32 fourcc;
+
+    gst_structure_get_fourcc (structure, "format", &fourcc);
+    entry.fourcc = fourcc;
+    qtpad->is_out_of_order = TRUE;
+  }
+
+  if (!entry.fourcc)
+    goto refuse_caps;
+
+  /* ok, set the pad info accordingly */
+  qtpad->fourcc = entry.fourcc;
+  qtpad->sync = sync;
+  /* collect optional extensions */
+  ext_atom = build_sample_entry_extension (qtpad->trak, qtmux->context->flavor,
+      entry.fourcc, esds_type, codec_data);
+  atom_trak_set_video_type (qtpad->trak, qtmux->context, &entry, rate,
+      ext_atom);
+
+  gst_object_unref (qtmux);
+  return TRUE;
+
+  /* ERRORS */
+refuse_caps:
+  {
+    GST_WARNING_OBJECT (qtmux, "pad %s refused caps %" GST_PTR_FORMAT,
+        GST_PAD_NAME (pad), caps);
+    gst_object_unref (qtmux);
+    return FALSE;
+  }
+refuse_renegotiation:
+  {
+    GST_WARNING_OBJECT (qtmux,
+        "pad %s refused renegotiation to %" GST_PTR_FORMAT,
+        GST_PAD_NAME (pad), caps);
+    gst_object_unref (qtmux);
+    return FALSE;
+  }
+}
+
+static gboolean
+gst_qt_mux_sink_event (GstPad * pad, GstEvent * event)
+{
+  gboolean ret;
+  GstQTMux *qtmux;
+  GstTagList *list;
+
+  qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_TAG:
+      GST_DEBUG_OBJECT (qtmux, "received tag event");
+      gst_event_parse_tag (event, &list);
+
+      if (qtmux->tags) {
+        gst_tag_list_insert (qtmux->tags, list, GST_TAG_MERGE_PREPEND);
+      } else {
+        qtmux->tags = gst_tag_list_copy (list);
+      }
+      break;
+    default:
+      break;
+  }
+
+  ret = qtmux->collect_event (pad, event);
+  gst_object_unref (qtmux);
+
+  return ret;
+}
+
+static void
+gst_qt_mux_release_pad (GstElement * element, GstPad * pad)
+{
+  GstQTMux *mux = GST_QT_MUX_CAST (element);
+
+  /* let GstCollectPads complain if it is some unknown pad */
+  if (gst_collect_pads_remove_pad (mux->collect, pad))
+    gst_element_remove_pad (element, pad);
+}
+
+static GstPad *
+gst_qt_mux_request_new_pad (GstElement * element,
+    GstPadTemplate * templ, const gchar * name)
+{
+  GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
+  GstQTMux *qtmux = GST_QT_MUX_CAST (element);
+  GstQTPad *collect_pad;
+  GstPad *newpad;
+  gboolean audio;
+
+  GST_DEBUG_OBJECT (qtmux, "Requested pad: %s", GST_STR_NULL (name));
+
+  if (qtmux->state != GST_QT_MUX_STATE_NONE) {
+    GST_WARNING_OBJECT (qtmux, "Not providing request pad after stream start.");
+    return NULL;
+  }
+
+  if (templ == gst_element_class_get_pad_template (klass, "audio_%d")) {
+    audio = TRUE;
+  } else if (templ == gst_element_class_get_pad_template (klass, "video_%d")) {
+    audio = FALSE;
+  } else {
+    GST_WARNING_OBJECT (qtmux, "This is not our template!");
+    return NULL;
+  }
+
+  /* add pad to collections */
+  newpad = gst_pad_new_from_template (templ, name);
+  collect_pad = (GstQTPad *)
+      gst_collect_pads_add_pad_full (qtmux->collect, newpad, sizeof (GstQTPad),
+      (GstCollectDataDestroyNotify) (gst_qt_mux_pad_reset));
+  /* set up pad */
+  gst_qt_mux_pad_reset (collect_pad);
+  collect_pad->trak = atom_trak_new (qtmux->context);
+  atom_moov_add_trak (qtmux->moov, collect_pad->trak);
+
+  /* set up pad functions */
+  if (audio)
+    gst_pad_set_setcaps_function (newpad,
+        GST_DEBUG_FUNCPTR (gst_qt_mux_audio_sink_set_caps));
+  else
+    gst_pad_set_setcaps_function (newpad,
+        GST_DEBUG_FUNCPTR (gst_qt_mux_video_sink_set_caps));
+
+  /* FIXME: hacked way to override/extend the event function of
+   * GstCollectPads; because it sets its own event function giving the
+   * element no access to events.
+   */
+  qtmux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (newpad);
+  gst_pad_set_event_function (newpad,
+      GST_DEBUG_FUNCPTR (gst_qt_mux_sink_event));
+
+  gst_pad_set_active (newpad, TRUE);
+  gst_element_add_pad (element, newpad);
+
+  return newpad;
+}
+
+static void
+gst_qt_mux_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec)
+{
+  GstQTMux *qtmux = GST_QT_MUX_CAST (object);
+
+  GST_OBJECT_LOCK (qtmux);
+  switch (prop_id) {
+    case PROP_LARGE_FILE:
+      g_value_set_boolean (value, qtmux->large_file);
+      break;
+    case PROP_MOVIE_TIMESCALE:
+      g_value_set_uint (value, qtmux->timescale);
+      break;
+    case PROP_DO_CTTS:
+      g_value_set_boolean (value, qtmux->do_ctts);
+      break;
+    case PROP_FAST_START:
+      g_value_set_boolean (value, qtmux->fast_start);
+      break;
+    case PROP_FAST_START_TEMP_FILE:
+      g_value_set_string (value, qtmux->fast_start_file_path);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+  GST_OBJECT_UNLOCK (qtmux);
+}
+
+static void
+gst_qt_mux_generate_fast_start_file_path (GstQTMux * qtmux)
+{
+  gchar *tmp;
+
+  if (qtmux->fast_start_file_path) {
+    g_free (qtmux->fast_start_file_path);
+    qtmux->fast_start_file_path = NULL;
+  }
+
+  tmp = g_strdup_printf ("%s%d", "qtmux", g_random_int ());
+  qtmux->fast_start_file_path = g_build_filename (g_get_tmp_dir (), tmp, NULL);
+  g_free (tmp);
+}
+
+static void
+gst_qt_mux_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+  GstQTMux *qtmux = GST_QT_MUX_CAST (object);
+
+  GST_OBJECT_LOCK (qtmux);
+  switch (prop_id) {
+    case PROP_LARGE_FILE:
+      qtmux->large_file = g_value_get_boolean (value);
+      break;
+    case PROP_MOVIE_TIMESCALE:
+      qtmux->timescale = g_value_get_uint (value);
+      break;
+    case PROP_DO_CTTS:
+      qtmux->do_ctts = g_value_get_boolean (value);
+      break;
+    case PROP_FAST_START:
+      qtmux->fast_start = g_value_get_boolean (value);
+      break;
+    case PROP_FAST_START_TEMP_FILE:
+      if (qtmux->fast_start_file_path) {
+        g_free (qtmux->fast_start_file_path);
+      }
+      qtmux->fast_start_file_path = g_value_dup_string (value);
+      /* NULL means to generate a random one */
+      if (!qtmux->fast_start_file_path) {
+        gst_qt_mux_generate_fast_start_file_path (qtmux);
+      }
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+  GST_OBJECT_UNLOCK (qtmux);
+}
+
+static GstStateChangeReturn
+gst_qt_mux_change_state (GstElement * element, GstStateChange transition)
+{
+  GstStateChangeReturn ret;
+  GstQTMux *qtmux = GST_QT_MUX_CAST (element);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+      break;
+    case GST_STATE_CHANGE_READY_TO_PAUSED:
+      gst_collect_pads_start (qtmux->collect);
+      qtmux->state = GST_QT_MUX_STATE_STARTED;
+      break;
+    case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+      break;
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      gst_collect_pads_stop (qtmux->collect);
+      break;
+    default:
+      break;
+  }
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+      break;
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      gst_qt_mux_reset (qtmux, TRUE);
+      break;
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      break;
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+
+gboolean
+gst_qt_mux_register (GstPlugin * plugin)
+{
+  GTypeInfo typeinfo = {
+    sizeof (GstQTMuxClass),
+    (GBaseInitFunc) gst_qt_mux_base_init,
+    NULL,
+    (GClassInitFunc) gst_qt_mux_class_init,
+    NULL,
+    NULL,
+    sizeof (GstQTMux),
+    0,
+    (GInstanceInitFunc) gst_qt_mux_init,
+  };
+  static const GInterfaceInfo tag_setter_info = {
+    NULL, NULL, NULL
+  };
+  GType type;
+  GstQTMuxFormat format;
+  GstQTMuxClassParams *params;
+  guint i = 0;
+
+  GST_LOG ("Registering muxers");
+
+  while (TRUE) {
+    GstQTMuxFormatProp *prop;
+
+    prop = &gst_qt_mux_format_list[i];
+    format = prop->format;
+    if (format == GST_QT_MUX_FORMAT_NONE)
+      break;
+
+    /* create a cache for these properties */
+    params = g_new0 (GstQTMuxClassParams, 1);
+    params->prop = prop;
+    params->src_caps = gst_static_caps_get (&prop->src_caps);
+    params->video_sink_caps = gst_static_caps_get (&prop->video_sink_caps);
+    params->audio_sink_caps = gst_static_caps_get (&prop->audio_sink_caps);
+
+    /* create the type now */
+    type = g_type_register_static (GST_TYPE_ELEMENT, prop->type_name, &typeinfo,
+        0);
+    g_type_set_qdata (type, GST_QT_MUX_PARAMS_QDATA, (gpointer) params);
+    g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info);
+
+    if (!gst_element_register (plugin, prop->name, GST_RANK_NONE, type))
+      return FALSE;
+
+    i++;
+  }
+
+  GST_LOG ("Finished registering muxers");
+
+  return TRUE;
+}
+
+gboolean
+gst_qt_mux_plugin_init (GstPlugin * plugin)
+{
+  GST_DEBUG_CATEGORY_INIT (gst_qt_mux_debug, "qtmux", 0, "QT Muxer");
+
+  return gst_qt_mux_register (plugin);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "qtmux",
+    "Quicktime Muxer plugin",
+    gst_qt_mux_plugin_init, VERSION, "LGPL", "gsoc2008 package",
+    "embedded.ufcg.edu.br")
diff --git a/gst/qtmux/gstqtmux.h b/gst/qtmux/gstqtmux.h
new file mode 100644
index 00000000..4459947a
--- /dev/null
+++ b/gst/qtmux/gstqtmux.h
@@ -0,0 +1,134 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_QT_MUX_H__
+#define __GST_QT_MUX_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstcollectpads.h>
+
+#include "fourcc.h"
+#include "atoms.h"
+#include "gstqtmuxmap.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_QT_MUX (gst_qt_mux_get_type())
+#define GST_QT_MUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QT_MUX, GstQTMux))
+#define GST_QT_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QT_MUX, GstQTMux))
+#define GST_IS_QT_MUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QT_MUX))
+#define GST_IS_QT_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QT_MUX))
+#define GST_QT_MUX_CAST(obj) ((GstQTMux*)(obj))
+
+
+typedef struct _GstQTMux GstQTMux;
+typedef struct _GstQTMuxClass GstQTMuxClass;
+
+typedef struct _GstQTPad
+{
+  GstCollectData collect;       /* we extend the CollectData */
+
+  /* fourcc id of stream */
+  guint32 fourcc;
+  /* whether using format that have out of order buffers */
+  gboolean is_out_of_order;
+  /* if not 0, track with constant sized samples, e.g. raw audio */
+  guint sample_size;
+  /* make sync table entry */
+  gboolean sync;
+
+  GstBuffer *last_buf;
+  /* dts of last_buf */
+  GstClockTime last_dts;
+
+  /* all the atom and chunk book-keeping is delegated here
+   * unowned/uncounted reference, parent MOOV owns */
+  AtomTRAK *trak;
+} GstQTPad;
+
+typedef enum _GstQTMuxState
+{
+  GST_QT_MUX_STATE_NONE,
+  GST_QT_MUX_STATE_STARTED,
+  GST_QT_MUX_STATE_DATA,
+  GST_QT_MUX_STATE_EOS
+} GstQTMuxState;
+
+struct _GstQTMux
+{
+  GstElement element;
+
+  GstPad *srcpad;
+  GstCollectPads *collect;
+
+  /* state */
+  GstQTMuxState state;
+
+  /* size of header (prefix, atoms (ftyp, mdat)) */
+  guint64 header_size;
+  /* accumulated size of raw media data (a priori not including mdat header) */
+  guint64 mdat_size;
+  /* position of mdat extended size field (for later updating) */
+  guint64 mdat_pos;
+
+  /* atom helper objects */
+  AtomsContext *context;
+  AtomFTYP *ftyp;
+  AtomMOOV *moov;
+
+  /* fast start */
+  FILE *fast_start_file;
+
+  GstTagList *tags;
+
+  /* properties */
+  guint32 timescale;
+  AtomsTreeFlavor flavor;
+  gboolean fast_start;
+  gboolean large_file;
+  gboolean do_ctts;
+  gchar *fast_start_file_path;
+
+  /* for collect pads event handling function */
+  GstPadEventFunction collect_event;
+};
+
+struct _GstQTMuxClass
+{
+  GstElementClass parent_class;
+
+  GstQTMuxFormat format;
+};
+
+/* type register helper struct */
+typedef struct _GstQTMuxClassParams
+{
+  GstQTMuxFormatProp *prop;
+  GstCaps *src_caps;
+  GstCaps *video_sink_caps;
+  GstCaps *audio_sink_caps;
+} GstQTMuxClassParams;
+
+#define GST_QT_MUX_PARAMS_QDATA g_quark_from_static_string("qt-mux-params")
+
+GType gst_qt_mux_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_QT_MUX_H__ */
diff --git a/gst/qtmux/gstqtmuxmap.c b/gst/qtmux/gstqtmuxmap.c
new file mode 100644
index 00000000..ca62cc07
--- /dev/null
+++ b/gst/qtmux/gstqtmuxmap.c
@@ -0,0 +1,245 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ * Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "gstqtmuxmap.h"
+#include "fourcc.h"
+#include "ftypcc.h"
+
+/* static info related to various format */
+
+#define COMMON_VIDEO_CAPS \
+  "width = (int) [ 16, 4096 ], " \
+  "height = (int) [ 16, 4096 ], " \
+  "framerate = (fraction) [ 0, MAX ]"
+
+#define COMMON_VIDEO_CAPS_NO_FRAMERATE \
+  "width = (int) [ 16, 4096 ], " \
+  "height = (int) [ 16, 4096 ] "
+
+#define H264_CAPS \
+  "video/x-h264, " \
+  COMMON_VIDEO_CAPS
+
+#define MPEG4V_CAPS \
+  "video/mpeg, " \
+  "mpegversion = (int) 4, "\
+  "systemstream = (boolean) false, " \
+  COMMON_VIDEO_CAPS "; " \
+  "video/x-divx, " \
+  "divxversion = (int) 5, "\
+  COMMON_VIDEO_CAPS
+
+#define COMMON_AUDIO_CAPS(c, r) \
+  "channels = (int) [ 1, " G_STRINGIFY (c) " ], " \
+  "rate = (int) [ 1, " G_STRINGIFY (r) " ]"
+
+#define PCM_CAPS \
+  "audio/x-raw-int, " \
+  "width = (int) 8, " \
+  "depth = (int) 8, " \
+  COMMON_AUDIO_CAPS (2, MAX) ", " \
+  "signed = (boolean) { true, false }; " \
+  "audio/x-raw-int, " \
+  "width = (int) 16, " \
+  "depth = (int) 16, " \
+  "endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }, " \
+  COMMON_AUDIO_CAPS (2, MAX) ", " \
+  "signed = (boolean) true " \
+
+#define PCM_CAPS_FULL \
+  PCM_CAPS "; " \
+  "audio/x-raw-int, " \
+  "width = (int) 24, " \
+  "depth = (int) 24, " \
+  "endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }, " \
+  COMMON_AUDIO_CAPS (2, MAX) ", " \
+  "signed = (boolean) true; " \
+  "audio/x-raw-int, " \
+  "width = (int) 32, " \
+  "depth = (int) 32, " \
+  "endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }, " \
+  COMMON_AUDIO_CAPS (2, MAX) ", " \
+  "signed = (boolean) true "
+
+#define MP3_CAPS \
+  "audio/mpeg, " \
+  "mpegversion = (int) 1, " \
+  "layer = (int) 3, " \
+  COMMON_AUDIO_CAPS (2, MAX)
+
+#define AAC_CAPS \
+  "audio/mpeg, " \
+  "mpegversion = (int) 4, " \
+  COMMON_AUDIO_CAPS (8, MAX)
+
+
+GstQTMuxFormatProp gst_qt_mux_format_list[] = {
+  /* original QuickTime format; see Apple site (e.g. qtff.pdf) */
+  {
+        GST_QT_MUX_FORMAT_QT,
+        "qtmux",
+        "QuickTime",
+        "GstQTMux",
+        GST_STATIC_CAPS ("video/quicktime"),
+        GST_STATIC_CAPS ("video/x-raw-rgb, "
+            COMMON_VIDEO_CAPS "; "
+            "video/x-raw-yuv, "
+            "format = (fourcc) UYVY, "
+            COMMON_VIDEO_CAPS "; "
+            "video/x-h263, "
+            "h263version = (string) h263, "
+            COMMON_VIDEO_CAPS "; "
+            MPEG4V_CAPS "; "
+            H264_CAPS "; "
+            "video/x-dv, "
+            "systemstream = (boolean) false, "
+            COMMON_VIDEO_CAPS "; "
+            "image/jpeg, "
+            COMMON_VIDEO_CAPS_NO_FRAMERATE "; " "video/x-qt-part"),
+        GST_STATIC_CAPS (PCM_CAPS_FULL "; "
+            MP3_CAPS " ; "
+            AAC_CAPS " ; "
+            "audio/x-alaw, "
+            COMMON_AUDIO_CAPS (2, MAX) "; "
+            "audio/x-mulaw, " COMMON_AUDIO_CAPS (2, MAX))
+      }
+  ,
+  /* ISO 14496-14: mp42 as ISO base media extension
+   * (supersedes original ISO 144996-1 mp41) */
+  {
+        GST_QT_MUX_FORMAT_MP4,
+        "mp4mux",
+        "MP4",
+        "GstMP4Mux",
+        /* FIXME does not feel right, due to qt caps mess */
+        GST_STATIC_CAPS ("video/quicktime"),
+        GST_STATIC_CAPS (MPEG4V_CAPS "; " H264_CAPS),
+        GST_STATIC_CAPS (MP3_CAPS "; " AAC_CAPS)
+      }
+  ,
+  /* 3GPP Technical Specification 26.244 V7.3.0
+   * (extended in 3GPP2 File Formats for Multimedia Services) */
+  {
+        GST_QT_MUX_FORMAT_3GP,
+        "gppmux",
+        "3GPP",
+        "GstGPPMux",
+        GST_STATIC_CAPS ("application/x-3gp"),
+        GST_STATIC_CAPS (H264_CAPS),
+        GST_STATIC_CAPS ("audio/AMR, "
+            COMMON_AUDIO_CAPS (8, MAX) "; " MP3_CAPS "; " AAC_CAPS)
+      }
+  ,
+  /* ISO 15444-3: Motion-JPEG-2000 (also ISO base media extension) */
+  {
+        GST_QT_MUX_FORMAT_MJ2,
+        "mj2mux",
+        "MJ2",
+        "GstMJ2Mux",
+        GST_STATIC_CAPS ("video/mj2"),
+        GST_STATIC_CAPS ("image/x-j2c, " COMMON_VIDEO_CAPS),
+        GST_STATIC_CAPS (PCM_CAPS)
+      }
+  ,
+  {
+        GST_QT_MUX_FORMAT_NONE,
+      }
+  ,
+};
+
+/* pretty static, but may turn out needed a few times */
+AtomsTreeFlavor
+gst_qt_mux_map_format_to_flavor (GstQTMuxFormat format)
+{
+  if (format == GST_QT_MUX_FORMAT_QT)
+    return ATOMS_TREE_FLAVOR_MOV;
+  else
+    return ATOMS_TREE_FLAVOR_ISOM;
+}
+
+/* pretty static, but possibly dynamic format info */
+
+/* notes:
+ * - avc1 brand is not used, since the specific extensions indicated by it
+ *   are not used (e.g. sample groupings, etc)
+ * - 3GPP2 specific formats not (yet) used, only 3GPP, so no need yet either
+ *   for 3g2a (but later on, moov might be used to conditionally switch to
+ *   3g2a if needed) */
+void
+gst_qt_mux_map_format_to_header (GstQTMuxFormat format, GstBuffer ** _prefix,
+    guint32 * _major, guint32 * _version, GList ** _compatible, AtomMOOV * moov)
+{
+  static guint32 qt_brands[] = { 0 };
+  static guint32 mp4_brands[] = { FOURCC_mp41, FOURCC_isom, FOURCC_iso2, 0 };
+  static guint32 gpp_brands[] = { FOURCC_isom, FOURCC_iso2, 0 };
+  static guint32 mjp2_brands[] = { FOURCC_isom, FOURCC_iso2, 0 };
+  static guint8 mjp2_prefix[] =
+      { 0, 0, 0, 12, 'j', 'P', ' ', ' ', 0x0D, 0x0A, 0x87, 0x0A };
+  guint32 *comp = NULL;
+  guint32 major = 0, version;
+  GstBuffer *prefix = NULL;
+  GList *result = NULL;
+
+  g_return_if_fail (_prefix != NULL);
+  g_return_if_fail (_major != NULL);
+  g_return_if_fail (_version != NULL);
+  g_return_if_fail (_compatible != NULL);
+
+  version = 1;
+  switch (format) {
+    case GST_QT_MUX_FORMAT_QT:
+      major = FOURCC_qt__;
+      comp = qt_brands;
+      version = 0x20050300;
+      break;
+    case GST_QT_MUX_FORMAT_MP4:
+      major = FOURCC_mp42;
+      comp = mp4_brands;
+      break;
+    case GST_QT_MUX_FORMAT_3GP:
+      major = FOURCC_3gg7;
+      comp = gpp_brands;
+      break;
+    case GST_QT_MUX_FORMAT_MJ2:
+      major = FOURCC_mjp2;
+      comp = mjp2_brands;
+      prefix = gst_buffer_new_and_alloc (sizeof (mjp2_prefix));
+      memcpy (GST_BUFFER_DATA (prefix), mjp2_prefix, GST_BUFFER_SIZE (prefix));
+      break;
+    default:
+      g_assert_not_reached ();
+      break;
+  }
+
+  /* convert list to list, hm */
+  while (comp && *comp != 0) {
+    /* order matters over efficiency */
+    result = g_list_append (result, GUINT_TO_POINTER (*comp));
+    comp++;
+  }
+
+  *_major = major;
+  *_version = version;
+  *_prefix = prefix;
+  *_compatible = result;
+
+  /* TODO 3GPP may include mp42 as compatible if applicable */
+  /* TODO 3GPP major brand 3gp7 if at most 1 video and audio track */
+}
diff --git a/gst/qtmux/gstqtmuxmap.h b/gst/qtmux/gstqtmuxmap.h
new file mode 100644
index 00000000..7228774f
--- /dev/null
+++ b/gst/qtmux/gstqtmuxmap.h
@@ -0,0 +1,57 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ * Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_QT_MUX_MAP_H__
+#define __GST_QT_MUX_MAP_H__
+
+#include "atoms.h"
+
+#include <glib.h>
+#include <gst/gst.h>
+
+typedef enum _GstQTMuxFormat
+{
+  GST_QT_MUX_FORMAT_NONE = 0,
+  GST_QT_MUX_FORMAT_QT,
+  GST_QT_MUX_FORMAT_MP4,
+  GST_QT_MUX_FORMAT_3GP,
+  GST_QT_MUX_FORMAT_MJ2
+} GstQTMuxFormat;
+
+typedef struct _GstQTMuxFormatProp
+{
+  GstQTMuxFormat format;
+  gchar *name;
+  gchar *long_name;
+  gchar *type_name;
+  GstStaticCaps src_caps;
+  GstStaticCaps video_sink_caps;
+  GstStaticCaps audio_sink_caps;
+} GstQTMuxFormatProp;
+
+extern GstQTMuxFormatProp gst_qt_mux_format_list[];
+
+void            gst_qt_mux_map_format_to_header      (GstQTMuxFormat format, GstBuffer ** _prefix,
+                                                      guint32 * _major, guint32 * verson,
+                                                      GList ** _compatible, AtomMOOV * moov);
+
+AtomsTreeFlavor gst_qt_mux_map_format_to_flavor      (GstQTMuxFormat format);
+
+#endif /* __GST_QT_MUX_MAP_H__ */
diff --git a/gst/qtmux/properties.c b/gst/qtmux/properties.c
new file mode 100644
index 00000000..48a960a6
--- /dev/null
+++ b/gst/qtmux/properties.c
@@ -0,0 +1,183 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "properties.h"
+
+/* if needed, re-allocate buffer to ensure size bytes can be written into it
+ * at offset */
+void
+prop_copy_ensure_buffer (guint8 ** buffer, guint64 * bsize, guint64 * offset,
+    guint64 size)
+{
+  if (buffer && *bsize - *offset < size) {
+    *bsize += size + 10 * 1024;
+    *buffer = g_realloc (*buffer, *bsize);
+  }
+}
+
+static guint64
+copy_func (void *prop, guint size, guint8 ** buffer, guint64 * bsize,
+    guint64 * offset)
+{
+  if (buffer) {
+    prop_copy_ensure_buffer (buffer, bsize, offset, size);
+    memcpy (*buffer + *offset, prop, size);
+  }
+  *offset += size;
+  return size;
+}
+
+#define INT_ARRAY_COPY_FUNC_FAST(name, datatype) 			\
+guint64 prop_copy_ ## name ## _array (datatype *prop, guint size,	\
+    guint8 ** buffer, guint64 * bsize, guint64 * offset) { 		\
+  return copy_func (prop, sizeof (datatype) * size, buffer, bsize, offset);\
+}
+
+#define INT_ARRAY_COPY_FUNC(name, datatype) 				\
+guint64 prop_copy_ ## name ## _array (datatype *prop, guint size,	\
+    guint8 ** buffer, guint64 * bsize, guint64 * offset) { 		\
+  guint i;								\
+									\
+  for (i = 0; i < size; i++) {						\
+    prop_copy_ ## name (prop[i], buffer, bsize, offset);		\
+  }									\
+  return sizeof (datatype) * size;					\
+}
+
+/* INTEGERS */
+guint64
+prop_copy_uint8 (guint8 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  return copy_func (&prop, sizeof (guint8), buffer, size, offset);
+}
+
+guint64
+prop_copy_uint16 (guint16 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GUINT16_TO_BE (prop);
+  return copy_func (&prop, sizeof (guint16), buffer, size, offset);
+}
+
+guint64
+prop_copy_uint32 (guint32 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GUINT32_TO_BE (prop);
+  return copy_func (&prop, sizeof (guint32), buffer, size, offset);
+}
+
+guint64
+prop_copy_uint64 (guint64 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GUINT64_TO_BE (prop);
+  return copy_func (&prop, sizeof (guint64), buffer, size, offset);
+}
+
+guint64
+prop_copy_int32 (gint32 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GINT32_TO_BE (prop);
+  return copy_func (&prop, sizeof (guint32), buffer, size, offset);
+}
+
+/* uint8 can use direct copy in any case, and may be used for large quantity */
+INT_ARRAY_COPY_FUNC_FAST (uint8, guint8);
+/* not used in large quantity anyway */
+INT_ARRAY_COPY_FUNC (uint16, guint16);
+INT_ARRAY_COPY_FUNC (uint32, guint32);
+INT_ARRAY_COPY_FUNC (uint64, guint64);
+
+/* FOURCC */
+guint64
+prop_copy_fourcc (guint32 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GINT32_TO_LE (prop);
+  return copy_func (&prop, sizeof (guint32), buffer, size, offset);
+}
+
+INT_ARRAY_COPY_FUNC (fourcc, guint32);
+
+/**
+ * Copies a string of bytes without placing its size at the beginning.
+ *
+ * @string: the string to be copied
+ * @str_size: size of the string
+ * @buffer: the array to copy the string to
+ * @offset: the position in the buffer array.
+ * This value is updated to the point right after the copied string.
+ *
+ * Returns: the number of bytes copied
+ */
+guint64
+prop_copy_fixed_size_string (guint8 * string, guint str_size, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  return copy_func (string, str_size * sizeof (guint8), buffer, size, offset);
+}
+
+/**
+ * Copies a string and its size to an array. Example:
+ * string = 'abc\0'
+ * result in the array: [3][a][b][c]  (each [x] represents a position)
+ *
+ * @string: the string to be copied
+ * @str_size: size of the string
+ * @buffer: the array to copy the string to
+ * @offset: the position in the buffer array.
+ * This value is updated to the point right after the copied string.
+ *
+ * Returns: the number of bytes copied
+ */
+guint64
+prop_copy_size_string (guint8 * string, guint str_size, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  prop_copy_uint8 (str_size, buffer, size, offset);
+  prop_copy_fixed_size_string (string, str_size, buffer, size, offset);
+  return *offset - original_offset;
+}
+
+/**
+ * Copies a string including its null terminating char to an array.
+ *
+ * @string: the string to be copied
+ * @buffer: the array to copy the string to
+ * @offset: the position in the buffer array.
+ * This value is updated to the point right after the copied string.
+ *
+ * Returns: the number of bytes copied
+ */
+guint64
+prop_copy_null_terminated_string (gchar * string, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  guint len = strlen (string);
+
+  prop_copy_fixed_size_string ((guint8 *) string, len, buffer, size, offset);
+  prop_copy_uint8 ('\0', buffer, size, offset);
+  return *offset - original_offset;
+}
diff --git a/gst/qtmux/properties.h b/gst/qtmux/properties.h
new file mode 100644
index 00000000..a2935caf
--- /dev/null
+++ b/gst/qtmux/properties.h
@@ -0,0 +1,64 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __PROPERTIES_H__
+#define __PROPERTIES_H__
+
+#include <glib.h>
+#include <string.h>
+
+/**
+ * Functions for copying atoms properties.
+ *
+ * All of them receive, as the input, the property to be copied, the destination
+ * buffer, and a pointer to an offset in the destination buffer to copy to the right place.
+ * This offset will be updated to the new value (offset + copied_size)
+ * The functions return the size of the property that has been copied or 0
+ * if it couldn't copy.
+ */
+
+void    prop_copy_ensure_buffer          (guint8 ** buffer, guint64 * bsize, guint64 * offset, guint64 size);
+
+guint64 prop_copy_uint8                  (guint8 prop, guint8 **buffer, guint64 *size, guint64 *offset);
+guint64 prop_copy_uint16                 (guint16 prop, guint8 **buffer, guint64 *size, guint64 *offset);
+guint64 prop_copy_uint32                 (guint32 prop, guint8 **buffer, guint64 *size, guint64 *offset);
+guint64 prop_copy_uint64                 (guint64 prop, guint8 **buffer, guint64 *size, guint64 *offset);
+
+guint64 prop_copy_int32                  (gint32 prop, guint8 **buffer, guint64 *size, guint64 *offset);
+
+guint64 prop_copy_uint8_array            (guint8 *prop, guint size,
+                                          guint8 **buffer, guint64 *bsize, guint64 *offset);
+guint64 prop_copy_uint16_array           (guint16 *prop, guint size,
+                                          guint8 **buffer, guint64 *bsize, guint64 *offset);
+guint64 prop_copy_uint32_array           (guint32 *prop, guint size,
+                                          guint8 **buffer, guint64 *bsize, guint64 *offset);
+guint64 prop_copy_uint64_array           (guint64 *prop, guint size,
+                                          guint8 **buffer, guint64 *bsize, guint64 *offset);
+
+guint64 prop_copy_fourcc                 (guint32 prop, guint8 **buffer, guint64 *size, guint64 *offset);
+guint64 prop_copy_fourcc_array           (guint32 *prop, guint size,
+                                          guint8 **buffer, guint64 *bsize, guint64 *offset);
+guint64 prop_copy_fixed_size_string      (guint8 *string, guint str_size,
+                                          guint8 **buffer, guint64 *size, guint64 *offset);
+guint64 prop_copy_size_string            (guint8 *string, guint str_size,
+                                          guint8 **buffer, guint64 *size, guint64 *offset);
+guint64 prop_copy_null_terminated_string (gchar *string,
+                                          guint8 **buffer, guint64 *size, guint64 *offset);
+
+#endif /* __PROPERTIES_H__ */