Added new module for common functions. Using GST_TYPE_FRACTION for Exif (S)Rational types.

Original commit message from CVS:
Added new module for common functions. Using GST_TYPE_FRACTION for Exif (S)Rational types.

1 files changed, 0 insertions, 1801 deletions

diff --git a/ext/metadata/gstmetadataparse.c b/ext/metadata/gstmetadataparse.c
deleted file mode 100644
index d95a9399..00000000
--- a/ext/metadata/gstmetadataparse.c
+++ /dev/null
@@ -1,1801 +0,0 @@
-/*
- * GStreamer
- * Copyright 2007 Edgard Lima <edgard.lima@indt.org.br>
- * 
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Alternatively, the contents of this file may be used under the
- * GNU Lesser General Public License Version 2.1 (the "LGPL"), in
- * which case the following provisions apply instead of the ones
- * mentioned above:
- *
- * 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:metadataparse-metadata
- *
- * <refsect2>
- * <title>Example launch line</title>
- * <para>
- * <programlisting>
- * gst-launch -v -m filesrc location=./test.jpeg ! metadataparse ! fakesink silent=TRUE
- * </programlisting>
- * </para>
- * </refsect2>
- */
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#include <gst/gst.h>
-
-#include "gstmetadataparse.h"
-
-#include "metadataexif.h"
-
-#include "metadataiptc.h"
-
-#include "metadataxmp.h"
-
-#include <string.h>
-
-GST_DEBUG_CATEGORY_STATIC (gst_metadata_parse_debug);
-#define GST_CAT_DEFAULT gst_metadata_parse_debug
-
-#define GOTO_DONE_IF_NULL(ptr) do { if ( NULL == (ptr) ) goto done; } while(FALSE)
-#define GOTO_DONE_IF_NULL_AND_FAIL(ptr, ret) do { if ( NULL == (ptr) ) { (ret) = FALSE; goto done; } } while(FALSE)
-
-/* Filter signals and args */
-enum
-{
-  /* FILL ME */
-  LAST_SIGNAL
-};
-
-enum
-{
-  ARG_0,
-  ARG_EXIF,
-  ARG_IPTC,
-  ARG_XMP
-};
-
-static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("image/jpeg, "
-        "tags-extracted = (bool) false;"
-        "image/png, " "tags-extracted = (bool) false")
-    );
-
-static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("image/jpeg, "
-        "tags-extracted = (bool) true;"
-        "image/png, " "tags-extracted = (bool) true")
-    );
-
-GST_BOILERPLATE (GstMetadataParse, gst_metadata_parse, GstElement,
-    GST_TYPE_ELEMENT);
-
-static GstMetadataParseClass *metadata_parent_class = NULL;
-
-static void gst_metadata_parse_dispose (GObject * object);
-
-static void gst_metadata_parse_finalize (GObject * object);
-
-static void gst_metadata_parse_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_metadata_parse_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
-
-static GstStateChangeReturn
-gst_metadata_parse_change_state (GstElement * element,
-    GstStateChange transition);
-
-static GstCaps *gst_metadata_parse_get_caps (GstPad * pad);
-static gboolean gst_metadata_parse_set_caps (GstPad * pad, GstCaps * caps);
-static gboolean gst_metadata_parse_src_event (GstPad * pad, GstEvent * event);
-static gboolean gst_metadata_parse_sink_event (GstPad * pad, GstEvent * event);
-
-static GstFlowReturn gst_metadata_parse_chain (GstPad * pad, GstBuffer * buf);
-
-static gboolean gst_metadata_parse_checkgetrange (GstPad * srcpad);
-
-static GstFlowReturn
-gst_metadata_parse_get_range (GstPad * pad, guint64 offset_orig, guint size,
-    GstBuffer ** buf);
-
-static gboolean gst_metadata_parse_sink_activate (GstPad * pad);
-
-static gboolean
-gst_metadata_parse_src_activate_pull (GstPad * pad, gboolean active);
-
-static gboolean gst_metadata_parse_pull_range_parse (GstMetadataParse * filter);
-
-static void gst_metadata_parse_init_members (GstMetadataParse * filter);
-static void gst_metadata_parse_dispose_members (GstMetadataParse * filter);
-
-static gboolean
-gst_metadata_parse_configure_srccaps (GstMetadataParse * filter);
-static gboolean gst_metadata_parse_configure_caps (GstMetadataParse * filter);
-
-static int
-gst_metadata_parse_parse (GstMetadataParse * filter, const guint8 * buf,
-    guint32 size);
-
-static void gst_metadata_parse_send_tags (GstMetadataParse * filter);
-
-
-
-static int
-gst_metadata_parse_get_strip_seg (const gint64 offset, guint32 size,
-    const gint64 seg_offset, const guint32 seg_size,
-    gint64 * boffset, guint32 * bsize, guint32 * seg_binter);
-
-static gboolean
-gst_metadata_parse_strip_push_buffer (GstMetadataParse * filter,
-    gint64 offset_orig, GstBuffer ** prepend, GstBuffer ** buf);
-
-static gboolean
-gst_metadata_parse_translate_pos_to_orig (GstMetadataParse * filter, gint64 pos,
-    gint64 * orig_pos, GstBuffer ** buf);
-
-static const GstQueryType *gst_metadata_parse_get_query_types (GstPad * pad);
-
-static gboolean gst_metadata_parse_src_query (GstPad * pad, GstQuery * query);
-
-static void
-gst_metadata_parse_base_init (gpointer gclass)
-{
-  static GstElementDetails element_details = {
-    "Metadata parser",
-    "Parser/Extracter/Metadata",
-    "Send metadata tags (EXIF, IPTC and XMP) while passing throught the contents",
-    "Edgard Lima <edgard.lima@indt.org.br>"
-  };
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
-  gst_element_class_set_details (element_class, &element_details);
-}
-
-/* initialize the plugin's class */
-static void
-gst_metadata_parse_class_init (GstMetadataParseClass * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *gstelement_class;
-
-  gobject_class = (GObjectClass *) klass;
-  gstelement_class = (GstElementClass *) klass;
-
-  metadata_parent_class = g_type_class_peek_parent (klass);
-
-  gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_metadata_parse_dispose);
-  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_metadata_parse_finalize);
-
-  gobject_class->set_property = gst_metadata_parse_set_property;
-  gobject_class->get_property = gst_metadata_parse_get_property;
-
-  g_object_class_install_property (gobject_class, ARG_EXIF,
-      g_param_spec_boolean ("exif", "EXIF", "Send EXIF metadata ?",
-          TRUE, G_PARAM_READWRITE));
-
-  g_object_class_install_property (gobject_class, ARG_IPTC,
-      g_param_spec_boolean ("iptc", "IPTC", "Send IPTC metadata ?",
-          TRUE, G_PARAM_READWRITE));
-
-  g_object_class_install_property (gobject_class, ARG_XMP,
-      g_param_spec_boolean ("xmp", "XMP", "Send XMP metadata ?",
-          TRUE, G_PARAM_READWRITE));
-
-  gstelement_class->change_state = gst_metadata_parse_change_state;
-
-}
-
-/* initialize the new element
- * instantiate pads and add them to element
- * set functions
- * initialize structure
- */
-static void
-gst_metadata_parse_init (GstMetadataParse * filter,
-    GstMetadataParseClass * gclass)
-{
-  GstElementClass *klass = GST_ELEMENT_GET_CLASS (filter);
-
-  /* sink pad */
-
-  filter->sinkpad =
-      gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
-          "sink"), "sink");
-  gst_pad_set_setcaps_function (filter->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_metadata_parse_set_caps));
-  gst_pad_set_getcaps_function (filter->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_metadata_parse_get_caps));
-  gst_pad_set_event_function (filter->sinkpad, gst_metadata_parse_sink_event);
-  gst_pad_set_chain_function (filter->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_metadata_parse_chain));
-  gst_pad_set_activate_function (filter->sinkpad,
-      gst_metadata_parse_sink_activate);
-
-  /* source pad */
-
-  filter->srcpad =
-      gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
-          "src"), "src");
-  gst_pad_set_getcaps_function (filter->srcpad,
-      GST_DEBUG_FUNCPTR (gst_metadata_parse_get_caps));
-  gst_pad_set_event_function (filter->srcpad, gst_metadata_parse_src_event);
-  gst_pad_set_query_function (filter->srcpad,
-      GST_DEBUG_FUNCPTR (gst_metadata_parse_src_query));
-  gst_pad_set_query_type_function (filter->srcpad,
-      GST_DEBUG_FUNCPTR (gst_metadata_parse_get_query_types));
-  gst_pad_use_fixed_caps (filter->srcpad);
-
-  gst_pad_set_checkgetrange_function (filter->srcpad,
-      GST_DEBUG_FUNCPTR (gst_metadata_parse_checkgetrange));
-  gst_pad_set_getrange_function (filter->srcpad, gst_metadata_parse_get_range);
-
-  gst_pad_set_activatepull_function (filter->srcpad,
-      GST_DEBUG_FUNCPTR (gst_metadata_parse_src_activate_pull));
-  /* addind pads */
-
-  gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
-  gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
-
-  metadataparse_xmp_init ();
-  /* init members */
-
-  filter->options = META_OPT_EXIF | META_OPT_IPTC | META_OPT_XMP;
-
-  gst_metadata_parse_init_members (filter);
-
-}
-
-static void
-gst_metadata_parse_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec)
-{
-  GstMetadataParse *filter = GST_METADATA_PARSE (object);
-
-  switch (prop_id) {
-    case ARG_EXIF:
-      if (g_value_get_boolean (value))
-        filter->options |= META_OPT_EXIF;
-      else
-        filter->options &= ~META_OPT_EXIF;
-      break;
-    case ARG_IPTC:
-      if (g_value_get_boolean (value))
-        filter->options |= META_OPT_IPTC;
-      else
-        filter->options &= ~META_OPT_IPTC;
-      break;
-    case ARG_XMP:
-      if (g_value_get_boolean (value))
-        filter->options |= META_OPT_XMP;
-      else
-        filter->options &= ~META_OPT_XMP;
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-static void
-gst_metadata_parse_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec)
-{
-  GstMetadataParse *filter = GST_METADATA_PARSE (object);
-
-  switch (prop_id) {
-    case ARG_EXIF:
-      g_value_set_boolean (value, filter->options & META_OPT_EXIF);
-      break;
-    case ARG_IPTC:
-      g_value_set_boolean (value, filter->options & META_OPT_IPTC);
-      break;
-    case ARG_XMP:
-      g_value_set_boolean (value, filter->options & META_OPT_XMP);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-/* GstElement vmethod implementations */
-
-static GstCaps *
-gst_metadata_parse_get_caps (GstPad * pad)
-{
-  GstMetadataParse *filter = NULL;
-  GstPad *otherpad;
-  GstCaps *caps_new = NULL;
-  GstCaps *caps_otherpad_peer = NULL;
-
-  filter = GST_METADATA_PARSE (gst_pad_get_parent (pad));
-
-  (filter->srcpad == pad) ? (otherpad = filter->sinkpad) : (otherpad =
-      filter->srcpad);
-
-  caps_new = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
-
-  caps_otherpad_peer = gst_pad_get_allowed_caps (otherpad);
-  GOTO_DONE_IF_NULL (caps_otherpad_peer);
-
-  if (gst_caps_is_empty (caps_otherpad_peer)
-      || gst_caps_is_any (caps_otherpad_peer)) {
-    goto done;
-  } else {
-
-    guint i;
-    guint caps_size = 0;
-
-    caps_size = gst_caps_get_size (caps_otherpad_peer);
-
-    gst_caps_unref (caps_new);
-
-    caps_new = gst_caps_new_empty ();
-
-    for (i = 0; i < caps_size; ++i) {
-      GstStructure *structure = NULL;
-      GstStructure *structure_new = NULL;
-      const gchar *mime = NULL;
-
-      structure = gst_caps_get_structure (caps_otherpad_peer, i);
-
-      mime = gst_structure_get_name (structure);
-
-      if (pad == filter->sinkpad) {
-        structure_new =
-            gst_structure_new (mime, "tags-extracted", G_TYPE_BOOLEAN, FALSE,
-            NULL);
-      } else {
-        structure_new =
-            gst_structure_new (mime, "tags-extracted", G_TYPE_BOOLEAN, TRUE,
-            NULL);
-      }
-
-      gst_caps_append_structure (caps_new, structure_new);
-
-    }
-
-  }
-
-done:
-
-  if (caps_otherpad_peer) {
-    gst_caps_unref (caps_otherpad_peer);
-    caps_otherpad_peer = NULL;
-  }
-
-  gst_object_unref (filter);
-
-  return caps_new;
-
-}
-
-static gboolean
-gst_metadata_parse_src_event (GstPad * pad, GstEvent * event)
-{
-  GstMetadataParse *filter = NULL;
-  gboolean ret = FALSE;
-
-  filter = GST_METADATA_PARSE (gst_pad_get_parent (pad));
-
-  switch (GST_EVENT_TYPE (event)) {
-    case GST_EVENT_SEEK:
-    {
-      gdouble rate;
-      GstFormat format;
-      GstSeekFlags flags;
-      GstSeekType start_type;
-      gint64 start;
-      GstSeekType stop_type;
-      gint64 stop;
-
-      /* we don't know where are the chunks to be stripped before parse */
-      if (filter->state != MT_STATE_PARSED)
-        goto done;
-
-      gst_event_parse_seek (event, &rate, &format, &flags,
-          &start_type, &start, &stop_type, &stop);
-
-      switch (format) {
-        case GST_FORMAT_BYTES:
-          break;
-        case GST_FORMAT_PERCENT:
-          if (filter->duration < 0)
-            goto done;
-          start = start * filter->duration / 100;
-          stop = stop * filter->duration / 100;
-          break;
-        default:
-          goto done;
-      }
-      format = GST_FORMAT_BYTES;
-
-      if (start_type == GST_SEEK_TYPE_CUR)
-        start = filter->offset + start;
-      else if (start_type == GST_SEEK_TYPE_END) {
-        if (filter->duration < 0)
-          goto done;
-        start = filter->duration + start;
-      }
-      start_type == GST_SEEK_TYPE_SET;
-
-      if (filter->prepend_buffer) {
-        gst_buffer_unref (filter->prepend_buffer);
-        filter->prepend_buffer = NULL;
-      }
-
-      /* FIXME: related to append */
-      filter->offset = start;
-      gst_metadata_parse_translate_pos_to_orig (filter, start, &start,
-          &filter->prepend_buffer);
-      filter->offset_orig = start;
-
-      if (stop_type == GST_SEEK_TYPE_CUR)
-        stop = filter->offset + stop;
-      else if (stop_type == GST_SEEK_TYPE_END) {
-        if (filter->duration < 0)
-          goto done;
-        stop = filter->duration + stop;
-      }
-      stop_type == GST_SEEK_TYPE_SET;
-
-      gst_metadata_parse_translate_pos_to_orig (filter, stop, &stop, NULL);
-
-      gst_event_unref (event);
-      event = gst_event_new_seek (rate, format, flags,
-          start_type, start, stop_type, stop);
-
-    }
-      break;
-    default:
-      break;
-  }
-
-  ret = gst_pad_event_default (pad, event);
-  event = NULL;                 /* event has another owner */
-
-done:
-
-  if (event) {
-    gst_event_unref (event);
-  }
-
-  gst_object_unref (filter);
-
-  return ret;
-
-}
-
-static gboolean
-gst_metadata_parse_sink_event (GstPad * pad, GstEvent * event)
-{
-  GstMetadataParse *filter = NULL;
-  gboolean ret = FALSE;
-
-  filter = GST_METADATA_PARSE (gst_pad_get_parent (pad));
-
-  switch (GST_EVENT_TYPE (event)) {
-    case GST_EVENT_EOS:
-      if (filter->need_more_data) {
-        GST_ELEMENT_WARNING (filter, STREAM, DEMUX, (NULL),
-            ("Need more data. Unexpected EOS"));
-      }
-      break;
-    case GST_EVENT_TAG:
-      break;
-    default:
-      break;
-  }
-
-  ret = gst_pad_event_default (pad, event);
-
-  gst_object_unref (filter);
-
-  return ret;
-
-}
-
-static void
-gst_metadata_parse_dispose (GObject * object)
-{
-  GstMetadataParse *filter = NULL;
-
-  filter = GST_METADATA_PARSE (object);
-
-  gst_metadata_parse_dispose_members (filter);
-
-  metadataparse_xmp_dispose ();
-
-  G_OBJECT_CLASS (metadata_parent_class)->dispose (object);
-
-}
-
-static void
-gst_metadata_parse_finalize (GObject * object)
-{
-  G_OBJECT_CLASS (metadata_parent_class)->finalize (object);
-}
-
-static void
-gst_metadata_parse_dispose_members (GstMetadataParse * filter)
-{
-  metadata_dispose (&filter->parse_data);
-
-  if (filter->adapter_parsing) {
-    gst_object_unref (filter->adapter_parsing);
-    filter->adapter_parsing = NULL;
-  }
-
-  if (filter->adapter_holding) {
-    gst_object_unref (filter->adapter_holding);
-    filter->adapter_holding = NULL;
-  }
-
-  if (filter->append_buffer) {
-    gst_buffer_unref (filter->append_buffer);
-    filter->append_buffer = NULL;
-  }
-
-  if (filter->prepend_buffer) {
-    gst_buffer_unref (filter->prepend_buffer);
-    filter->prepend_buffer = NULL;
-  }
-}
-
-static void
-gst_metadata_parse_init_members (GstMetadataParse * filter)
-{
-  filter->need_send_tag = FALSE;
-
-  filter->adapter_parsing = NULL;
-  filter->adapter_holding = NULL;
-  filter->next_offset = 0;
-  filter->next_size = 0;
-  filter->img_type = IMG_NONE;
-  filter->offset_orig = 0;
-  filter->duration_orig = 0;
-  filter->offset = 0;
-  filter->duration = 0;
-  filter->state = MT_STATE_NULL;
-  filter->need_more_data = FALSE;
-
-  filter->append_buffer = NULL;
-  filter->prepend_buffer = NULL;
-
-  memset (&filter->parse_data, 0x00, sizeof (MetaData));
-
-}
-
-static gboolean
-gst_metadata_parse_configure_srccaps (GstMetadataParse * filter)
-{
-  GstCaps *caps = NULL;
-  gboolean ret = FALSE;
-  gchar *mime = NULL;
-
-  switch (filter->img_type) {
-    case IMG_JPEG:
-      mime = "image/jpeg";
-      break;
-    case IMG_PNG:
-      mime = "image/png";
-      break;
-    default:
-      ret = FALSE;
-      goto done;
-      break;
-  }
-
-  caps =
-      gst_caps_new_simple (mime, "tags-extracted", G_TYPE_BOOLEAN, TRUE, NULL);
-
-  ret = gst_pad_set_caps (filter->srcpad, caps);
-
-done:
-
-  if (caps) {
-    gst_caps_unref (caps);
-    caps = NULL;
-  }
-
-  return ret;
-
-}
-
-static gboolean
-gst_metadata_parse_configure_caps (GstMetadataParse * filter)
-{
-  GstCaps *caps = NULL;
-  gboolean ret = FALSE;
-  gchar *mime = NULL;
-  GstPad *peer = NULL;
-
-  peer = gst_pad_get_peer (filter->sinkpad);
-
-  switch (filter->img_type) {
-    case IMG_JPEG:
-      mime = "image/jpeg";
-      break;
-    case IMG_PNG:
-      mime = "image/png";
-      break;
-    default:
-      goto done;
-      break;
-  }
-
-  caps = gst_caps_new_simple (mime, NULL);
-
-  if (!gst_pad_set_caps (peer, caps)) {
-    goto done;
-  }
-
-  ret = gst_pad_set_caps (filter->sinkpad, caps);
-
-done:
-
-  if (caps) {
-    gst_caps_unref (caps);
-    caps = NULL;
-  }
-
-  if (peer) {
-    gst_object_unref (peer);
-    peer = NULL;
-  }
-
-  return ret;
-
-}
-
-/* this function handles the link with other elements */
-static gboolean
-gst_metadata_parse_set_caps (GstPad * pad, GstCaps * caps)
-{
-  GstMetadataParse *filter = NULL;
-  GstStructure *structure = NULL;
-  const gchar *mime = NULL;
-  gboolean ret = FALSE;
-  gboolean parsed = TRUE;
-
-  filter = GST_METADATA_PARSE (gst_pad_get_parent (pad));
-
-  structure = gst_caps_get_structure (caps, 0);
-
-  mime = gst_structure_get_name (structure);
-
-  if (strcmp (mime, "image/jpeg") == 0) {
-    filter->img_type = IMG_JPEG;
-  } else if (strcmp (mime, "image/png") == 0) {
-    filter->img_type = IMG_PNG;
-  } else {
-    ret = FALSE;
-    goto done;
-  }
-
-  if (gst_structure_get_boolean (structure, "tags-extracted", &parsed)) {
-    if (parsed == TRUE) {
-      ret = FALSE;
-      goto done;
-    }
-  }
-
-  ret = gst_metadata_parse_configure_srccaps (filter);
-
-done:
-
-  gst_object_unref (filter);
-
-  return ret;
-}
-
-static const gchar *
-gst_metadata_parse_get_type_name (int img_type)
-{
-  gchar *type_name = NULL;
-
-  switch (img_type) {
-    case IMG_JPEG:
-      type_name = "jpeg";
-      break;
-    case IMG_PNG:
-      type_name = "png";
-      break;
-    default:
-      type_name = "invalid type";
-      break;
-  }
-  return type_name;
-}
-
-static void
-gst_metadata_parse_send_tags (GstMetadataParse * filter)
-{
-
-  GstMessage *msg;
-  GstTagList *taglist = gst_tag_list_new ();
-  GstEvent *event;
-
-  if (filter->options & META_OPT_EXIF)
-    metadataparse_exif_tag_list_add (taglist, GST_TAG_MERGE_KEEP,
-        filter->parse_data.exif_adapter, METADATA_TAG_MAP_WHOLECHUNK);
-  if (filter->options & META_OPT_IPTC)
-    metadataparse_iptc_tag_list_add (taglist, GST_TAG_MERGE_KEEP,
-        filter->parse_data.iptc_adapter, METADATA_TAG_MAP_WHOLECHUNK);
-  if (filter->options & META_OPT_XMP)
-    metadataparse_xmp_tag_list_add (taglist, GST_TAG_MERGE_KEEP,
-        filter->parse_data.xmp_adapter, METADATA_TAG_MAP_WHOLECHUNK);
-
-  if (taglist && !gst_tag_list_is_empty (taglist)) {
-
-    msg =
-        gst_message_new_tag (GST_OBJECT (filter), gst_tag_list_copy (taglist));
-    gst_element_post_message (GST_ELEMENT (filter), msg);
-
-    event = gst_event_new_tag (taglist);
-    gst_pad_push_event (filter->srcpad, event);
-    taglist = NULL;
-  }
-
-  if (!taglist)
-    taglist = gst_tag_list_new ();
-
-  if (filter->options & META_OPT_EXIF)
-    metadataparse_exif_tag_list_add (taglist, GST_TAG_MERGE_KEEP,
-        filter->parse_data.exif_adapter, METADATA_TAG_MAP_INDIVIDUALS);
-  if (filter->options & META_OPT_IPTC)
-    metadataparse_iptc_tag_list_add (taglist, GST_TAG_MERGE_KEEP,
-        filter->parse_data.iptc_adapter, METADATA_TAG_MAP_INDIVIDUALS);
-  if (filter->options & META_OPT_XMP)
-    metadataparse_xmp_tag_list_add (taglist, GST_TAG_MERGE_KEEP,
-        filter->parse_data.xmp_adapter, METADATA_TAG_MAP_INDIVIDUALS);
-
-  if (taglist && !gst_tag_list_is_empty (taglist)) {
-
-    msg = gst_message_new_tag (GST_OBJECT (filter), taglist);
-    gst_element_post_message (GST_ELEMENT (filter), msg);
-    taglist = NULL;
-  }
-
-  if (taglist)
-    gst_tag_list_free (taglist);
-
-  filter->need_send_tag = FALSE;
-}
-
-static const GstQueryType *
-gst_metadata_parse_get_query_types (GstPad * pad)
-{
-  static const GstQueryType gst_metadata_parse_src_query_types[] = {
-    GST_QUERY_POSITION,
-    GST_QUERY_DURATION,
-    GST_QUERY_FORMATS,
-    0
-  };
-
-  return gst_metadata_parse_src_query_types;
-}
-
-static gboolean
-gst_metadata_parse_src_query (GstPad * pad, GstQuery * query)
-{
-  gboolean ret = FALSE;
-  GstFormat format;
-  GstMetadataParse *filter = GST_METADATA_PARSE (gst_pad_get_parent (pad));
-
-  switch (GST_QUERY_TYPE (query)) {
-    case GST_QUERY_POSITION:
-      gst_query_parse_position (query, &format, NULL);
-
-      if (format == GST_FORMAT_BYTES) {
-        gst_query_set_position (query, GST_FORMAT_BYTES, filter->offset);
-        ret = TRUE;
-      }
-      break;
-    case GST_QUERY_DURATION:
-      if (filter->state != MT_STATE_PARSED)
-        goto done;
-
-      gst_query_parse_duration (query, &format, NULL);
-
-      if (format == GST_FORMAT_BYTES) {
-        if (filter->duration >= 0) {
-          gst_query_set_duration (query, GST_FORMAT_BYTES, filter->duration);
-          ret = TRUE;
-        }
-      }
-      break;
-    case GST_QUERY_FORMATS:
-      gst_query_set_formats (query, 1, GST_FORMAT_BYTES);
-      ret = TRUE;
-      break;
-    default:
-      break;
-  }
-
-done:
-
-  gst_object_unref (filter);
-
-  return ret;
-
-}
-
-static void
-gst_metadata_parse_calculate_offsets (GstMetadataParse * filter)
-{
-  int i, j;
-  guint32 append_size;
-  guint32 bytes_striped, bytes_inject;
-  MetadataChunk *strip = filter->parse_data.strip_chunks.chunk;
-  MetadataChunk *inject = filter->parse_data.inject_chunks.chunk;
-  const gsize strip_len = filter->parse_data.strip_chunks.len;
-  const gsize inject_len = filter->parse_data.inject_chunks.len;
-
-  bytes_striped = 0;
-  bytes_inject = 0;
-
-  /* calculate the new position off injected chunks */
-  j = 0;
-  for (i = 0; i < inject_len; ++i) {
-    for (; j < strip_len; ++j) {
-      if (strip[j].offset_orig >= inject[i].offset_orig) {
-        break;
-      }
-      bytes_striped += strip[j].size;
-    }
-    inject[i].offset = inject[i].offset_orig - bytes_striped + bytes_inject;
-    bytes_inject += inject[i].size;
-  }
-
-  /* calculate append (doesnt make much sense, but, anyway..) */
-  append_size = 0;
-  for (i = inject_len - 1; i >= 0; --i) {
-    if (inject[i].offset_orig == filter->duration_orig)
-      append_size += inject[i].size;
-    else
-      break;
-  }
-  if (append_size) {
-    guint8 *data;
-
-    filter->append_buffer = gst_buffer_new_and_alloc (append_size);
-    GST_BUFFER_FLAG_SET (filter->append_buffer, GST_BUFFER_FLAG_READONLY);
-    data = GST_BUFFER_DATA (filter->append_buffer);
-    for (i = inject_len - 1; i >= 0; --i) {
-      if (inject[i].offset_orig == filter->duration_orig) {
-        memcpy (data, inject[i].data, inject[i].size);
-        data += inject[i].size;
-      } else {
-        break;
-      }
-    }
-  }
-
-  /* do nothing but just call for consistence */
-  metadata_lazy_update (&filter->parse_data);
-
-  if (filter->duration_orig) {
-    filter->duration = filter->duration_orig;
-    for (i = 0; i < inject_len; ++i) {
-      filter->duration += inject[i].size;
-    }
-    for (i = 0; i < strip_len; ++i) {
-      filter->duration -= strip[i].size;
-    }
-  }
-
-}
-
-/*
- * Do parsing step-by-step and reconfigure caps if need
- * return:
- *   META_PARSING_ERROR
- *   META_PARSING_DONE
- *   META_PARSING_NEED_MORE_DATA
- */
-
-static int
-gst_metadata_parse_parse (GstMetadataParse * filter, const guint8 * buf,
-    guint32 size)
-{
-
-  int ret = META_PARSING_ERROR;
-
-  filter->next_offset = 0;
-  filter->next_size = 0;
-
-  ret = metadata_parse (&filter->parse_data, buf, size,
-      &filter->next_offset, &filter->next_size);
-
-  if (ret == META_PARSING_ERROR) {
-    if (META_DATA_IMG_TYPE (filter->parse_data) == IMG_NONE) {
-      /* image type not recognized */
-      GST_ELEMENT_ERROR (filter, STREAM, TYPE_NOT_FOUND, (NULL),
-          ("Only jpeg and png are supported"));
-      goto done;
-    }
-  } else if (ret == META_PARSING_NEED_MORE_DATA) {
-    filter->need_more_data = TRUE;
-  } else {
-    gst_metadata_parse_calculate_offsets (filter);
-
-    filter->state = MT_STATE_PARSED;
-    filter->need_more_data = FALSE;
-    filter->need_send_tag = TRUE;
-  }
-
-  /* reconfigure caps if it is different from type detected by 'metadata_parse' function */
-  if (filter->img_type != META_DATA_IMG_TYPE (filter->parse_data)) {
-    filter->img_type = META_DATA_IMG_TYPE (filter->parse_data);
-    if (!gst_metadata_parse_configure_caps (filter)) {
-      GST_ELEMENT_ERROR (filter, STREAM, FORMAT, (NULL),
-          ("Couldn't reconfigure caps for %s",
-              gst_metadata_parse_get_type_name (filter->img_type)));
-      ret = META_PARSING_ERROR;
-      goto done;
-    }
-  }
-
-done:
-
-  return ret;
-
-}
-
-/* chain function
- * this function does the actual processing
- */
-
-/* FIXME */
-/* Current parse is just done before is pull mode could be activated */
-/* may be it is possible to parse in chain mode by doing some trick with gst-adapter */
-/* the pipeline below would be a test for that case */
-/* gst-launch-0.10 filesrc location=Exif.jpg ! queue !  metadataparse ! filesink location=gen3.jpg */
-
-static GstFlowReturn
-gst_metadata_parse_chain (GstPad * pad, GstBuffer * buf)
-{
-  GstMetadataParse *filter = NULL;
-  GstFlowReturn ret = GST_FLOW_ERROR;
-  guint32 buf_size = 0;
-  guint32 new_buf_size = 0;
-  gboolean append = FALSE;
-
-  filter = GST_METADATA_PARSE (gst_pad_get_parent (pad));
-
-  if (filter->state != MT_STATE_PARSED) {
-    guint32 adpt_size = gst_adapter_available (filter->adapter_parsing);
-
-    if (filter->next_offset) {
-      if (filter->next_offset >= adpt_size) {
-        /* clean adapter */
-        gst_adapter_clear (filter->adapter_parsing);
-        filter->next_offset -= adpt_size;
-        if (filter->next_offset >= GST_BUFFER_SIZE (buf)) {
-          /* we don't need data in this buffer */
-          filter->next_offset -= GST_BUFFER_SIZE (buf);
-        } else {
-          GstBuffer *new_buf;
-
-          /* add to adapter just need part from buf */
-          new_buf =
-              gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buf) -
-              filter->next_offset);
-          memcpy (GST_BUFFER_DATA (new_buf),
-              GST_BUFFER_DATA (buf) + filter->next_offset,
-              GST_BUFFER_SIZE (buf) - filter->next_offset);
-          filter->next_offset = 0;
-          gst_adapter_push (filter->adapter_parsing, new_buf);
-        }
-      } else {
-        /* remove first bytes and add buffer */
-        gst_adapter_flush (filter->adapter_parsing, filter->next_offset);
-        filter->next_offset = 0;
-        gst_adapter_push (filter->adapter_parsing, gst_buffer_copy (buf));
-      }
-    } else {
-      /* just push buffer */
-      gst_adapter_push (filter->adapter_parsing, gst_buffer_copy (buf));
-    }
-
-    adpt_size = gst_adapter_available (filter->adapter_parsing);
-
-    if (adpt_size && filter->next_size <= adpt_size) {
-      const guint8 *new_buf =
-          gst_adapter_peek (filter->adapter_parsing, adpt_size);
-
-      if (gst_metadata_parse_parse (filter, new_buf,
-              adpt_size) == META_PARSING_ERROR) {
-        ret = GST_FLOW_ERROR;
-        goto done;
-      }
-    }
-  }
-
-  if (filter->state == MT_STATE_PARSED) {
-
-    if (filter->adapter_holding) {
-      gst_adapter_push (filter->adapter_holding, buf);
-      buf = gst_adapter_take_buffer (filter->adapter_holding,
-          gst_adapter_available (filter->adapter_holding));
-      g_object_unref (filter->adapter_holding);
-      filter->adapter_holding = NULL;
-    }
-
-    if (filter->need_send_tag) {
-      gst_metadata_parse_send_tags (filter);
-    }
-
-    if (filter->offset_orig + GST_BUFFER_SIZE (buf) == filter->duration_orig)
-      append = TRUE;
-
-    buf_size = GST_BUFFER_SIZE (buf);
-
-    gst_metadata_parse_strip_push_buffer (filter, filter->offset_orig,
-        &filter->prepend_buffer, &buf);
-
-    if (buf) {                  /* may be all buffer has been striped */
-      gst_buffer_set_caps (buf, GST_PAD_CAPS (filter->srcpad));
-      new_buf_size = GST_BUFFER_SIZE (buf);
-
-      ret = gst_pad_push (filter->srcpad, buf);
-      buf = NULL;               /* this function don't owner it anymore */
-      if (ret != GST_FLOW_OK)
-        goto done;
-    } else {
-      ret = GST_FLOW_OK;
-    }
-
-    if (append && filter->append_buffer) {
-      gst_buffer_set_caps (filter->append_buffer,
-          GST_PAD_CAPS (filter->srcpad));
-      gst_buffer_ref (filter->append_buffer);
-      ret = gst_pad_push (filter->srcpad, filter->append_buffer);
-      if (ret != GST_FLOW_OK)
-        goto done;
-    }
-
-    filter->offset_orig += buf_size;
-    filter->offset += new_buf_size;
-
-  } else {
-    /* just store while still not parsed */
-    if (!filter->adapter_holding)
-      filter->adapter_holding = gst_adapter_new ();
-    gst_adapter_push (filter->adapter_holding, buf);
-    buf = NULL;
-    ret = GST_FLOW_OK;
-  }
-
-done:
-
-
-  if (buf) {
-    /* there was an error and buffer wasn't pushed */
-    gst_buffer_unref (buf);
-    buf = NULL;
-  }
-
-  gst_object_unref (filter);
-
-  return ret;
-
-}
-
-static gboolean
-gst_metadata_parse_pull_range_parse (GstMetadataParse * filter)
-{
-
-  int res;
-  gboolean ret = TRUE;
-  guint32 offset = 0;
-  gint64 duration = 0;
-  GstFormat format = GST_FORMAT_BYTES;
-
-  if (!(ret =
-          gst_pad_query_peer_duration (filter->sinkpad, &format, &duration))) {
-    /* this should never happen, but try chain anyway */
-    ret = TRUE;
-    goto done;
-  }
-  filter->duration_orig = duration;
-  if (format != GST_FORMAT_BYTES) {
-    /* this should never happen, but try chain anyway */
-    ret = TRUE;
-    goto done;
-  }
-
-  do {
-    GstFlowReturn flow;
-    GstBuffer *buf = NULL;
-
-    offset += filter->next_offset;
-
-    /* 'filter->next_size' only says the minimum required number of bytes.
-       We try provided more bytes (4096) just to avoid a lot of calls to 'metadata_parse'
-       returning META_PARSING_NEED_MORE_DATA */
-    if (filter->next_size < 4096) {
-      if (duration - offset < 4096) {
-        /* In case there is no 4096 bytes available upstream.
-           It should be done upstream but we do here for safety */
-        filter->next_size = duration - offset;
-      } else {
-        filter->next_size = 4096;
-      }
-    }
-
-    flow =
-        gst_pad_pull_range (filter->sinkpad, offset, filter->next_size, &buf);
-    if (GST_FLOW_OK != flow) {
-      ret = FALSE;
-      goto done;
-    }
-
-    res =
-        gst_metadata_parse_parse (filter, GST_BUFFER_DATA (buf),
-        GST_BUFFER_SIZE (buf));
-    if (res == META_PARSING_ERROR) {
-      ret = FALSE;
-      goto done;
-    }
-
-    gst_buffer_unref (buf);
-
-  } while (res == META_PARSING_NEED_MORE_DATA);
-
-done:
-
-  return ret;
-
-}
-
-static gboolean
-gst_metadata_parse_sink_activate (GstPad * pad)
-{
-  GstMetadataParse *filter = NULL;
-  gboolean ret = TRUE;
-
-
-  filter = GST_METADATA_PARSE (GST_PAD_PARENT (pad));
-
-  if (!gst_pad_check_pull_range (pad) ||
-      !gst_pad_activate_pull (filter->sinkpad, TRUE)) {
-    /* FIXME: currently it is not possible to parse in chain. Fail here ? */
-    /* nothing to be done by now, activate push mode */
-    return gst_pad_activate_push (pad, TRUE);
-  }
-
-  /* try to parse */
-  if (filter->state == MT_STATE_NULL) {
-    ret = gst_metadata_parse_pull_range_parse (filter);
-  }
-
-done:
-
-  if (ret) {
-    gst_pad_activate_pull (pad, FALSE);
-    gst_pad_activate_push (filter->srcpad, FALSE);
-    if (!gst_pad_is_active (pad)) {
-      ret = gst_pad_activate_push (filter->srcpad, TRUE);
-      ret = ret && gst_pad_activate_push (pad, TRUE);
-    }
-  }
-
-  return ret;
-
-}
-
-/*
- * offset - offset of buffer in original stream
- * size - size of buffer
- * seg_offset - offset of segment in original stream
- * seg_size - size of segment
- * boffset - offset inside buffer where segment starts (-1 for no intersection)
- * bsize - size of intersection
- * seg_binter - if segment start inside buffer is zero. if segment start before
- *               buffer and intersect, it is the offset inside segment.
- *
- * ret:
- *  -1 - segment before buffer
- *   0 - segment intersects
- *   1 - segment after buffer
- */
-
-static int
-gst_metadata_parse_get_strip_seg (const gint64 offset, guint32 size,
-    const gint64 seg_offset, const guint32 seg_size,
-    gint64 * boffset, guint32 * bsize, guint32 * seg_binter)
-{
-  int ret = -1;
-
-  *boffset = -1;
-  *bsize = 0;
-  *seg_binter = -1;
-
-  /* all segment after buffer */
-  if (seg_offset >= offset + size) {
-    ret = 1;
-    goto done;
-  }
-
-  if (seg_offset < offset) {
-    /* segment start somewhere before buffer */
-
-    /* all segment before buffer */
-    if (seg_offset + seg_size <= offset) {
-      ret = -1;
-      goto done;
-    }
-
-    *seg_binter = offset - seg_offset;
-    *boffset = 0;
-
-    /* FIXME : optimize to >= size -> = size */
-    if (seg_offset + seg_size >= offset + size) {
-      /* segment cover all buffer */
-      *bsize = size;
-    } else {
-      /* segment goes from start of buffer to somewhere before end */
-      *bsize = seg_size - *seg_binter;
-    }
-
-    ret = 0;
-
-  } else {
-    /* segment start somewhere into buffer */
-
-    *boffset = seg_offset - offset;
-    *seg_binter = 0;
-
-    if (seg_offset + seg_size <= offset + size) {
-      /* all segment into buffer */
-      *bsize = seg_size;
-    } else {
-      *bsize = size - *boffset;
-    }
-
-    ret = 0;
-
-  }
-
-done:
-
-  return ret;
-
-}
-
-/*
- *  TRUE -> buffer striped or injeted
- *  FALSE -> buffer unmodified
- */
-
-static gboolean
-gst_metadata_parse_strip_push_buffer (GstMetadataParse * filter,
-    gint64 offset_orig, GstBuffer ** prepend, GstBuffer ** buf)
-{
-  MetadataChunk *strip = filter->parse_data.strip_chunks.chunk;
-  MetadataChunk *inject = filter->parse_data.inject_chunks.chunk;
-  const gsize strip_len = filter->parse_data.strip_chunks.len;
-  const gsize inject_len = filter->parse_data.inject_chunks.len;
-  gboolean buffer_reallocated = FALSE;
-
-  guint32 size_buf_in = GST_BUFFER_SIZE (*buf);
-
-  gint64 *boffset_strip = NULL;
-  guint32 *bsize_strip = NULL;
-  guint32 *seg_binter_strip = NULL;
-
-  int i, j;
-  gboolean need_free_strip = FALSE;
-
-  guint32 striped_bytes = 0;
-  guint32 injected_bytes = 0;
-
-  guint32 prepend_size = prepend && *prepend ? GST_BUFFER_SIZE (*prepend) : 0;
-
-  if (inject_len) {
-
-    for (i = 0; i < inject_len; ++i) {
-      int res;
-
-      if (inject[i].offset_orig >= offset_orig) {
-        if (inject[i].offset_orig < offset_orig + size_buf_in) {
-          injected_bytes += inject[i].size;
-        } else {
-          /* segment is after size (segments are sorted) */
-          break;
-        }
-      }
-    }
-
-  }
-
-  /*
-   * strip segments
-   */
-
-  if (strip_len == 0)
-    goto inject;
-
-  if (G_UNLIKELY (strip_len > 16)) {
-    boffset_strip = g_new (gint64, strip_len);
-    bsize_strip = g_new (guint32, strip_len);
-    seg_binter_strip = g_new (guint32, strip_len);
-    need_free_strip = TRUE;
-  } else {
-    boffset_strip = g_alloca (sizeof (boffset_strip[0]) * strip_len);
-    bsize_strip = g_alloca (sizeof (bsize_strip[0]) * strip_len);
-    seg_binter_strip = g_alloca (sizeof (seg_binter_strip[0]) * strip_len);
-  }
-
-  memset (bsize_strip, 0x00, sizeof (bsize_strip[0]) * strip_len);
-
-  for (i = 0; i < strip_len; ++i) {
-    int res;
-
-    res = gst_metadata_parse_get_strip_seg (offset_orig, size_buf_in,
-        strip[i].offset_orig, strip[i].size, &boffset_strip[i], &bsize_strip[i],
-        &seg_binter_strip[i]);
-
-    /* segment is after size (segments are sorted) */
-    striped_bytes += bsize_strip[i];
-    if (res > 0) {
-      break;
-    }
-
-  }
-
-  if (striped_bytes) {
-
-    guint8 *data;
-
-    if (!buffer_reallocated) {
-      buffer_reallocated = TRUE;
-      if (injected_bytes + prepend_size > striped_bytes) {
-        GstBuffer *new_buf =
-            gst_buffer_new_and_alloc (GST_BUFFER_SIZE (*buf) + injected_bytes +
-            prepend_size - striped_bytes);
-
-        memcpy (GST_BUFFER_DATA (new_buf), GST_BUFFER_DATA (*buf),
-            GST_BUFFER_SIZE (*buf));
-
-        gst_buffer_unref (*buf);
-        *buf = new_buf;
-
-      } else if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY)) {
-        GstBuffer *new_buf = gst_buffer_copy (*buf);
-
-        gst_buffer_unref (*buf);
-        *buf = new_buf;
-        GST_BUFFER_FLAG_UNSET (*buf, GST_BUFFER_FLAG_READONLY);
-        GST_BUFFER_SIZE (*buf) += injected_bytes + prepend_size - striped_bytes;
-      }
-    }
-
-    data = GST_BUFFER_DATA (*buf);
-
-    striped_bytes = 0;
-    for (i = 0; i < strip_len; ++i) {
-      /* intersect */
-      if (bsize_strip[i]) {
-        memmove (data + boffset_strip[i] - striped_bytes,
-            data + boffset_strip[i] + bsize_strip[i] - striped_bytes,
-            size_buf_in - boffset_strip[i] - bsize_strip[i]);
-        striped_bytes += bsize_strip[i];
-      }
-    }
-    size_buf_in -= striped_bytes;
-
-  }
-
-inject:
-
-  /*
-   * inject segments
-   */
-
-  if (inject_len) {
-
-    guint8 *data;
-    guint32 striped_so_far;
-
-    if (!buffer_reallocated) {
-      buffer_reallocated = TRUE;
-      if (injected_bytes + prepend_size > striped_bytes) {
-        GstBuffer *new_buf =
-            gst_buffer_new_and_alloc (GST_BUFFER_SIZE (*buf) + injected_bytes +
-            prepend_size - striped_bytes);
-
-        memcpy (GST_BUFFER_DATA (new_buf), GST_BUFFER_DATA (*buf),
-            GST_BUFFER_SIZE (*buf));
-
-        gst_buffer_unref (*buf);
-        *buf = new_buf;
-
-      } else if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY)) {
-        GstBuffer *new_buf = gst_buffer_copy (*buf);
-
-        gst_buffer_unref (*buf);
-        *buf = new_buf;
-        GST_BUFFER_FLAG_UNSET (*buf, GST_BUFFER_FLAG_READONLY);
-        GST_BUFFER_SIZE (*buf) += injected_bytes + prepend_size - striped_bytes;
-      }
-    }
-
-    data = GST_BUFFER_DATA (*buf);
-
-    injected_bytes = 0;
-    striped_so_far = 0;
-    j = 0;
-    for (i = 0; i < inject_len; ++i) {
-      int res;
-
-      while (j < strip_len) {
-        if (strip[j].offset_orig < inject[i].offset_orig)
-          striped_so_far += bsize_strip[j++];
-        else
-          break;
-      }
-
-      if (inject[i].offset_orig >= offset_orig) {
-        if (inject[i].offset_orig <
-            offset_orig + size_buf_in + striped_bytes - injected_bytes) {
-          /* insert */
-          guint32 buf_off =
-              inject[i].offset_orig - offset_orig - striped_so_far +
-              injected_bytes;
-          memmove (data + buf_off + inject[i].size, data + buf_off,
-              size_buf_in - buf_off);
-          memcpy (data + buf_off, inject[i].data, inject[i].size);
-          injected_bytes += inject[i].size;
-          size_buf_in += inject[i].size;
-        } else {
-          /* segment is after size (segments are sorted) */
-          break;
-        }
-      }
-    }
-
-  }
-
-
-done:
-
-  if (prepend_size) {
-    if (injected_bytes == 0 && striped_bytes == 0) {
-      GstBuffer *new_buf =
-          gst_buffer_new_and_alloc (size_buf_in + prepend_size);
-
-      memcpy (GST_BUFFER_DATA (new_buf) + prepend_size, GST_BUFFER_DATA (*buf),
-          size_buf_in);
-
-      gst_buffer_unref (*buf);
-      *buf = new_buf;
-    } else {
-      memmove (GST_BUFFER_DATA (*buf) + prepend_size, GST_BUFFER_DATA (*buf),
-          size_buf_in);
-    }
-    memcpy (GST_BUFFER_DATA (*buf), GST_BUFFER_DATA (*prepend), prepend_size);
-    gst_buffer_unref (*prepend);
-    *prepend = NULL;
-  }
-
-  GST_BUFFER_SIZE (*buf) = size_buf_in + prepend_size;
-
-  if (need_free_strip) {
-    g_free (boffset_strip);
-    g_free (bsize_strip);
-    g_free (seg_binter_strip);
-  }
-
-  return injected_bytes || striped_bytes;
-
-}
-
-/*
- * pos - position in stream striped
- * orig_pos - position in original stream
- * return TRUE - position in original buffer
- *        FALSE - position in inserted chunk
- */
-static gboolean
-gst_metadata_parse_translate_pos_to_orig (GstMetadataParse * filter, gint64 pos,
-    gint64 * orig_pos, GstBuffer ** buf)
-{
-  int i;
-  MetadataChunk *strip = filter->parse_data.strip_chunks.chunk;
-  MetadataChunk *inject = filter->parse_data.inject_chunks.chunk;
-  const gsize strip_len = filter->parse_data.strip_chunks.len;
-  const gsize inject_len = filter->parse_data.inject_chunks.len;
-  gboolean ret = TRUE;
-  guint64 new_buf_size = 0;
-  guint64 injected_before = 0;
-
-  if (G_UNLIKELY (pos == -1)) {
-    *orig_pos = -1;
-    return TRUE;
-  } else if (G_UNLIKELY (pos >= filter->duration)) {
-    /* this should never happen */
-    *orig_pos = filter->duration_orig;
-    return TRUE;
-  }
-
-  /* calculate for injected */
-
-  /* just calculate size */
-  *orig_pos = pos;              /* save pos */
-  for (i = 0; i < inject_len; ++i) {
-    /* check if pos in inside chunk */
-    if (inject[i].offset <= pos) {
-      if (pos < inject[i].offset + inject[i].size) {
-        /* orig pos points after insert chunk */
-        new_buf_size += inject[i].size;
-        /* put pos after current chunk */
-        pos = inject[i].offset + inject[i].size;
-        ret = FALSE;
-      } else {
-        /* in case pos is not inside a injected chunk */
-        injected_before += inject[i].size;
-      }
-    } else {
-      break;
-    }
-  }
-
-  /* alloc buffer and calcute original pos */
-  if (buf && ret == FALSE) {
-    guint8 *data;
-
-    if (*buf)
-      gst_buffer_unref (*buf);
-    *buf = gst_buffer_new_and_alloc (new_buf_size);
-    data = GST_BUFFER_DATA (*buf);
-    pos = *orig_pos;            /* recover saved pos */
-    for (i = 0; i < inject_len; ++i) {
-      if (inject[i].offset > pos) {
-        break;
-      }
-      if (inject[i].offset <= pos && pos < inject[i].offset + inject[i].size) {
-        memcpy (data, inject[i].data, inject[i].size);
-        data += inject[i].size;
-        pos = inject[i].offset + inject[i].size;
-        /* out position after insert chunk orig */
-        *orig_pos = inject[i].offset_orig + inject[i].size;
-      }
-    }
-  }
-
-  if (ret == FALSE) {
-    /* if it inside a injected is already done */
-    goto done;
-  }
-
-  /* calculate for striped */
-
-  *orig_pos = pos - injected_before;
-  for (i = 0; i < strip_len; ++i) {
-    if (strip[i].offset_orig > pos) {
-      break;
-    }
-    *orig_pos += strip[i].size;
-  }
-
-done:
-
-  if (G_UNLIKELY (*orig_pos >= filter->duration_orig)) {
-    *orig_pos = filter->duration_orig - 1;
-  }
-
-  return ret;
-
-}
-
-static gboolean
-gst_metadata_parse_checkgetrange (GstPad * srcpad)
-{
-  GstMetadataParse *filter = NULL;
-
-  filter = GST_METADATA_PARSE (GST_PAD_PARENT (srcpad));
-
-  return gst_pad_check_pull_range (filter->sinkpad);
-}
-
-static GstFlowReturn
-gst_metadata_parse_get_range (GstPad * pad,
-    guint64 offset, guint size, GstBuffer ** buf)
-{
-  GstMetadataParse *filter = NULL;
-  GstFlowReturn ret = GST_FLOW_OK;
-  gint64 offset_orig = 0;
-  guint size_orig;
-  GstBuffer *prepend = NULL;
-  gboolean need_append = FALSE;
-
-  filter = GST_METADATA_PARSE (GST_PAD_PARENT (pad));
-
-  if (filter->state != MT_STATE_PARSED) {
-    ret = GST_FLOW_ERROR;
-    goto done;
-  }
-
-  if (offset + size > filter->duration) {
-    size = filter->duration - offset;
-  }
-
-  size_orig = size;
-
-  if (filter->need_send_tag) {
-    gst_metadata_parse_send_tags (filter);
-  }
-
-  gst_metadata_parse_translate_pos_to_orig (filter, offset, &offset_orig,
-      &prepend);
-
-  if (size > 1) {
-    gint64 pos;
-
-    pos = offset + size - 1;
-    gst_metadata_parse_translate_pos_to_orig (filter, pos, &pos, NULL);
-    size_orig = pos + 1 - offset_orig;
-  }
-
-  if (size_orig) {
-
-    ret = gst_pad_pull_range (filter->sinkpad, offset_orig, size_orig, buf);
-
-    if (ret == GST_FLOW_OK && *buf) {
-      gst_metadata_parse_strip_push_buffer (filter, offset_orig, &prepend, buf);
-
-      if (GST_BUFFER_SIZE (*buf) < size) {
-        /* need append */
-        need_append = TRUE;
-      }
-
-    }
-  } else {
-    *buf = prepend;
-  }
-
-done:
-
-  if (need_append) {
-    /* FIXME: together with SEEK and
-     * gst_metadata_parse_translate_pos_to_orig
-     * this way if chunk is added in the end we are in trolble
-     * ...still not implemented 'cause it will not be the
-     * case for the time being
-     */
-  }
-
-  return ret;
-
-}
-
-static gboolean
-gst_metadata_parse_src_activate_pull (GstPad * pad, gboolean active)
-{
-  GstMetadataParse *filter = NULL;
-  gboolean ret;
-
-  filter = GST_METADATA_PARSE (gst_pad_get_parent (pad));
-
-  ret = gst_pad_activate_pull (filter->sinkpad, active);
-
-  if (ret && filter->state == MT_STATE_NULL) {
-    ret = gst_metadata_parse_pull_range_parse (filter);
-  }
-
-  gst_object_unref (filter);
-
-  return ret;
-}
-
-
-static GstStateChangeReturn
-gst_metadata_parse_change_state (GstElement * element,
-    GstStateChange transition)
-{
-  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
-  GstMetadataParse *filter = GST_METADATA_PARSE (element);
-
-  switch (transition) {
-    case GST_STATE_CHANGE_NULL_TO_READY:
-      gst_metadata_parse_init_members (filter);
-      filter->adapter_parsing = gst_adapter_new ();
-      metadata_init (&filter->parse_data, TRUE, filter->options);
-      break;
-    default:
-      break;
-  }
-
-  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-  if (ret == GST_STATE_CHANGE_FAILURE)
-    goto done;
-
-  switch (transition) {
-    case GST_STATE_CHANGE_PAUSED_TO_READY:
-      filter->offset = 0;
-      filter->offset_orig = 0;
-      if (filter->adapter_parsing) {
-        gst_adapter_clear (filter->adapter_parsing);
-      }
-      if (filter->adapter_holding) {
-        gst_adapter_clear (filter->adapter_holding);
-      }
-      if (filter->state != MT_STATE_PARSED) {
-        /* cleanup parser */
-        /* FIXME: could be improved a bit to avoid mem allocation */
-        metadata_dispose (&filter->parse_data);
-        metadata_init (&filter->parse_data, TRUE, filter->options);
-      }
-      break;
-    case GST_STATE_CHANGE_READY_TO_NULL:
-      gst_metadata_parse_dispose_members (filter);
-      break;
-    default:
-      break;
-  }
-
-done:
-
-  return ret;
-}
-
-/*
- * element plugin init function
- */
-
-gboolean
-gst_metadata_parse_plugin_init (GstPlugin * plugin)
-{
-  GST_DEBUG_CATEGORY_INIT (gst_metadata_parse_debug, "metadataparse", 0,
-      "Metadata demuxer");
-
-  return gst_element_register (plugin, "metadataparse",
-      GST_RANK_PRIMARY + 1, GST_TYPE_METADATA_PARSE);
-}