gstreamer/gst/mxf/mxfdv-dif.c
Sebastian Dröge 71fc2ce3b4 Implement support for OP2a/b/c and OP3a/b/c, i.e. tracks with more than a single component. This currently only works...
Original commit message from CVS:
* gst/mxf/mxfaes-bwf.c: (mxf_bwf_handle_essence_element),
(mxf_aes3_handle_essence_element):
* gst/mxf/mxfalaw.c: (mxf_alaw_handle_essence_element):
* gst/mxf/mxfd10.c: (mxf_d10_picture_handle_essence_element),
(mxf_d10_sound_handle_essence_element):
* gst/mxf/mxfdemux.c: (gst_mxf_demux_pad_init),
(gst_mxf_demux_choose_package),
(gst_mxf_demux_handle_header_metadata_update_streams),
(gst_mxf_demux_pad_next_component),
(gst_mxf_demux_handle_generic_container_essence_element),
(gst_mxf_demux_parse_footer_metadata),
(gst_mxf_demux_handle_klv_packet), (gst_mxf_demux_src_query):
* gst/mxf/mxfdv-dif.c: (mxf_dv_dif_handle_essence_element):
* gst/mxf/mxfjpeg2000.c: (mxf_jpeg2000_handle_essence_element):
* gst/mxf/mxfmetadata.c: (mxf_metadata_sequence_init),
(mxf_metadata_structural_component_init),
(mxf_metadata_generic_picture_essence_descriptor_init):
* gst/mxf/mxfmpeg.c: (mxf_mpeg_video_handle_essence_element),
(mxf_mpeg_audio_handle_essence_element):
* gst/mxf/mxfparse.h:
* gst/mxf/mxfup.c: (mxf_up_handle_essence_element):
* gst/mxf/mxfvc3.c: (mxf_vc3_handle_essence_element):
* tests/check/elements/mxfdemux.c: (_sink_chain):
Implement support for OP2a/b/c and OP3a/b/c, i.e. tracks with
more than a single component. This currently only works for
the case where the components are stored in playback order
in the file.
Set some more default/distinguished values for the structural
metadata.
Make some types more strict by choosing the correct subclasses.
Set DISCONT flag on buffers after a component switch.
Take the last partition from the random index pack for the footer
partition of the header partition doesn't reference the footer
partition. This gives us the final structural metadata for
some more files in the beginning.
2008-12-31 08:53:02 +00:00

149 lines
3.9 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
*/
/* TODO:
* - playbin hangs on a lot of MXF/DV-DIF files (bug #563827)
* - decodebin2 creates loops inside the linking graph (bug #563828)
* - Forwarding of timestamps in dvdemux?
*/
#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
static gboolean
mxf_is_dv_dif_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 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,
MXFMetadataTimelineTrack * track,
MXFMetadataSourceClip * 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;
}
static GstCaps *
mxf_dv_dif_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
MXFEssenceElementHandleFunc * handler, gpointer * mapping_data)
{
MXFMetadataFileDescriptor *f = 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_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_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
*/
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;
}
static const MXFEssenceElementHandler mxf_dv_dif_essence_element_handler = {
mxf_is_dv_dif_essence_track,
mxf_dv_dif_create_caps
};
void
mxf_dv_dif_init (void)
{
mxf_essence_element_handler_register (&mxf_dv_dif_essence_element_handler);
}