summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--ChangeLog12
-rw-r--r--gst/mxf/Makefile.am2
-rw-r--r--gst/mxf/mxf.c2
-rw-r--r--gst/mxf/mxfvc3.c146
-rw-r--r--gst/mxf/mxfvc3.h33
5 files changed, 195 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index b641dccb..6983a81d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2008-12-18 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+
+ * gst/mxf/Makefile.am:
+ * gst/mxf/mxf.c: (plugin_init):
+ * gst/mxf/mxfvc3.c: (mxf_is_vc3_essence_track),
+ (mxf_vc3_handle_essence_element), (mxf_vc3_create_caps),
+ (mxf_vc3_init):
+ * gst/mxf/mxfvc3.h:
+ Add support for VC-3 (aka DNxHD essence, see SMPTE 2019-4).
+ This is untested because of lack of sample files but should
+ work fine.
+
2008-12-17 Wim Taymans <wim.taymans@collabora.co.uk>
* docs/plugins/Makefile.am:
diff --git a/gst/mxf/Makefile.am b/gst/mxf/Makefile.am
index 96e5720e..397d41a0 100644
--- a/gst/mxf/Makefile.am
+++ b/gst/mxf/Makefile.am
@@ -11,6 +11,7 @@ libgstmxf_la_SOURCES = \
mxfjpeg2000.c \
mxfd10.c \
mxfup.c \
+ mxfvc3.c \
mxfmetadata.c
libgstmxf_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS)
@@ -28,6 +29,7 @@ noinst_HEADERS = \
mxfjpeg2000.h \
mxfd10.h \
mxfup.h \
+ mxfvc3.h \
mxftypes.h \
mxfmetadata.h
diff --git a/gst/mxf/mxf.c b/gst/mxf/mxf.c
index 8506f431..2015bb08 100644
--- a/gst/mxf/mxf.c
+++ b/gst/mxf/mxf.c
@@ -31,6 +31,7 @@
#include "mxfjpeg2000.h"
#include "mxfd10.h"
#include "mxfup.h"
+#include "mxfvc3.h"
GST_DEBUG_CATEGORY (mxf_debug);
#define GST_CAT_DEFAULT mxf_debug
@@ -46,6 +47,7 @@ plugin_init (GstPlugin * plugin)
mxf_jpeg2000_init ();
mxf_d10_init ();
mxf_up_init ();
+ mxf_vc3_init ();
if (!gst_element_register (plugin, "mxfdemux", GST_RANK_PRIMARY,
GST_TYPE_MXF_DEMUX))
diff --git a/gst/mxf/mxfvc3.c b/gst/mxf/mxfvc3.c
new file mode 100644
index 00000000..1b449673
--- /dev/null
+++ b/gst/mxf/mxfvc3.c
@@ -0,0 +1,146 @@
+/* GStreamer
+ * Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * 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.
+ */
+
+/* Implementation of SMPTE S2019-4 - Mapping VC-3 coding units into the MXF
+ * Generic Container
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <string.h>
+
+#include "mxfvc3.h"
+
+GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
+#define GST_CAT_DEFAULT mxf_debug
+
+static gboolean
+mxf_is_vc3_essence_track (const MXFMetadataTimelineTrack * track)
+{
+ guint i;
+
+ g_return_val_if_fail (track != NULL, FALSE);
+
+ if (track->parent.descriptor == NULL)
+ return FALSE;
+
+ for (i = 0; i < track->parent.n_descriptor; i++) {
+ MXFMetadataFileDescriptor *d = track->parent.descriptor[i];
+ MXFUL *key;
+
+ if (!d)
+ continue;
+
+ key = &d->essence_container;
+ /* SMPTE S2019-4 7 */
+ if (mxf_is_generic_container_essence_container_label (key) &&
+ key->u[12] == 0x02 && key->u[13] == 0x11 &&
+ (key->u[14] == 0x01 || key->u[14] == 0x02))
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static GstFlowReturn
+mxf_vc3_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
+ GstCaps * caps,
+ MXFMetadataTimelineTrack * track,
+ MXFMetadataStructuralComponent * component, gpointer mapping_data,
+ GstBuffer ** outbuf)
+{
+ *outbuf = buffer;
+
+ /* SMPTE 2019-4 6.1 */
+ if (key->u[12] != 0x15 || (key->u[14] != 0x05 && key->u[14] != 0x06)) {
+ GST_ERROR ("Invalid VC-3 essence element");
+ return GST_FLOW_ERROR;
+ }
+
+ return GST_FLOW_OK;
+}
+
+
+static GstCaps *
+mxf_vc3_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
+ MXFEssenceElementHandleFunc * handler, gpointer * mapping_data)
+{
+ MXFMetadataFileDescriptor *f = NULL;
+ MXFMetadataGenericPictureEssenceDescriptor *p = NULL;
+ guint i;
+ GstCaps *caps = NULL;
+
+ g_return_val_if_fail (track != NULL, NULL);
+
+ if (track->parent.descriptor == NULL) {
+ GST_ERROR ("No descriptor found for this track");
+ return NULL;
+ }
+
+ for (i = 0; i < track->parent.n_descriptor; i++) {
+ if (!track->parent.descriptor[i])
+ continue;
+
+ if (MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->parent.
+ descriptor[i])) {
+ p = (MXFMetadataGenericPictureEssenceDescriptor *) track->
+ parent.descriptor[i];
+ f = track->parent.descriptor[i];
+ break;
+ } else if (MXF_IS_METADATA_FILE_DESCRIPTOR (track->parent.descriptor[i]) &&
+ !MXF_IS_METADATA_MULTIPLE_DESCRIPTOR (track->parent.descriptor[i])) {
+ f = track->parent.descriptor[i];
+ }
+ }
+
+ if (!f) {
+ GST_ERROR ("No descriptor found for this track");
+ return NULL;
+ }
+
+ *handler = mxf_vc3_handle_essence_element;
+
+ caps = gst_caps_new_simple ("video/x-dnxhd", NULL);
+ if (p) {
+ mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
+ } else {
+ GST_WARNING ("Only a generic file descriptor found");
+ }
+
+ if (!*tags)
+ *tags = gst_tag_list_new ();
+ gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
+ "VC-3 Video", NULL);
+
+ return caps;
+}
+
+static const MXFEssenceElementHandler mxf_vc3_essence_element_handler = {
+ mxf_is_vc3_essence_track,
+ mxf_vc3_create_caps
+};
+
+void
+mxf_vc3_init (void)
+{
+ mxf_essence_element_handler_register (&mxf_vc3_essence_element_handler);
+}
diff --git a/gst/mxf/mxfvc3.h b/gst/mxf/mxfvc3.h
new file mode 100644
index 00000000..f2bb2a35
--- /dev/null
+++ b/gst/mxf/mxfvc3.h
@@ -0,0 +1,33 @@
+/* GStreamer
+ * Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * 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.
+ */
+
+/* Implementation of SMPTE S2019-4 - Mapping VC-3 coding units into the MXF
+ * Generic Container
+ */
+
+#ifndef __MXF_VC3_H__
+#define __MXF_VC3_H__
+
+#include <gst/gst.h>
+
+#include "mxfparse.h"
+
+void mxf_vc3_init (void);
+
+#endif /* __MXF_VC3_H__ */
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-04 11:35:07 +0000