gstreamer/gst/mxf/mxfdv-dif.c
Sebastian Dröge 65009ed81b gst/mxf/: Add the codec name, and if possible the avg bitrate, to the pad's taglist.
Original commit message from CVS:
* gst/mxf/mxfaes-bwf.c: (mxf_bwf_create_caps):
* gst/mxf/mxfalaw.c: (mxf_alaw_create_caps):
* gst/mxf/mxfdemux.c:
(gst_mxf_demux_handle_generic_container_essence_element):
* gst/mxf/mxfdv-dif.c: (mxf_dv_dif_create_caps):
* gst/mxf/mxfjpeg2000.c: (mxf_jpeg2000_create_caps):
* gst/mxf/mxfmpeg.c: (mxf_mpeg_es_create_caps),
(mxf_mpeg_create_caps):
Add the codec name, and if possible the avg bitrate, to the pad's taglist.
2008-12-01 15:24:37 +00:00

128 lines
3.5 KiB
C

/* 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 383M - Mapping DV-DIF data into the MXF
* Generic Container
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <string.h>
#include "mxfdv-dif.h"
GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
#define GST_CAT_DEFAULT mxf_debug
gboolean
mxf_is_dv_dif_essence_track (const MXFMetadataTrack * track)
{
guint i;
g_return_val_if_fail (track != NULL, FALSE);
if (track->descriptor == NULL)
return FALSE;
for (i = 0; i < track->n_descriptor; i++) {
MXFMetadataFileDescriptor *d = track->descriptor[i];
MXFUL *key = &d->essence_container;
/* SMPTE 383M 8 */
if (mxf_is_generic_container_essence_container_label (key) &&
key->u[12] == 0x02 && key->u[13] == 0x02)
return TRUE;
}
return FALSE;
}
static GstFlowReturn
mxf_dv_dif_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
GstCaps * caps, MXFMetadataGenericPackage * package,
MXFMetadataTrack * track, MXFMetadataStructuralComponent * component,
gpointer mapping_data, GstBuffer ** outbuf)
{
*outbuf = buffer;
/* SMPTE 383 6.1.1 */
if (key->u[12] != 0x18 || (key->u[14] != 0x01 && key->u[14] != 0x02)) {
GST_ERROR ("Invalid DV-DIF essence element");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
GstCaps *
mxf_dv_dif_create_caps (MXFMetadataGenericPackage * package,
MXFMetadataTrack * track, GstTagList ** tags,
MXFEssenceElementHandler * handler, gpointer * mapping_data)
{
MXFMetadataFileDescriptor *f = NULL;
guint i;
GstCaps *caps = NULL;
g_return_val_if_fail (package != NULL, NULL);
g_return_val_if_fail (track != NULL, NULL);
if (track->descriptor == NULL) {
GST_ERROR ("No descriptor found for this track");
return NULL;
}
for (i = 0; i < track->n_descriptor; i++) {
if (((MXFMetadataGenericDescriptor *) track->
descriptor[i])->is_file_descriptor
&& ((MXFMetadataGenericDescriptor *) track->descriptor[i])->type !=
MXF_METADATA_MULTIPLE_DESCRIPTOR) {
f = track->descriptor[i];
}
}
if (!f) {
GST_ERROR ("No descriptor found for this track");
return NULL;
}
*handler = mxf_dv_dif_handle_essence_element;
/* SMPTE 383M 8 */
/* TODO: might be video or audio only, use values of the generic sound/picture
* descriptor in the caps in that case
* Also dvdemux might not forward timestamps
*/
if (f->essence_container.u[13] == 0x02) {
GST_DEBUG ("Found DV-DIF stream");
caps =
gst_caps_new_simple ("video/x-dv", "systemstream", G_TYPE_BOOLEAN, TRUE,
NULL);
if (!*tags)
*tags = gst_tag_list_new ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_CODEC, "DV-DIF",
NULL);
}
return caps;
}