gstreamer/gst/mxf/mxfmpeg.c
Sebastian Dröge 0be1824467 gst/mxf/: When memset'ing the descriptors to zeroes only touch the part of this descriptor, not it's parent type.
Original commit message from CVS:
* gst/mxf/mxfaes-bwf.c:
(mxf_metadata_wave_audio_essence_descriptor_reset):
* gst/mxf/mxfmpeg.c: (mxf_metadata_mpeg_video_descriptor_reset):
* gst/mxf/mxfparse.c: (mxf_metadata_file_descriptor_handle_tag),
(mxf_metadata_file_descriptor_reset),
(mxf_metadata_generic_sound_essence_descriptor_reset),
(mxf_metadata_generic_picture_essence_descriptor_reset),
(mxf_metadata_cdci_picture_essence_descriptor_reset),
(mxf_metadata_rgba_picture_essence_descriptor_reset),
(mxf_metadata_multiple_descriptor_reset):
* gst/mxf/mxfparse.h:
When memset'ing the descriptors to zeroes only touch the part
of this descriptor, not it's parent type.
Set correct default values for all metadata fields.
2008-11-26 10:37:34 +00:00

309 lines
9.8 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 381M - Mapping MPEG streams into the MXF
* Generic Container
*/
/* TODO:
* - Handle PES streams
* - Fix TS/PS demuxers to forward timestamps
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <string.h>
#include "mxfmpeg.h"
GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
#define GST_CAT_DEFAULT mxf_debug
/* SMPTE 381M 8.1 - ULs of local tags */
static const guint8 _single_sequence_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x02, 0x00, 0x00
};
static const guint8 _constant_b_frames_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x03, 0x00, 0x00
};
static const guint8 _coded_content_type_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x04, 0x00, 0x00
};
static const guint8 _low_delay_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x05, 0x00, 0x00
};
static const guint8 _closed_gop_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x06, 0x00, 0x00
};
static const guint8 _identical_gop_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x07, 0x00, 0x00
};
static const guint8 _max_gop_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x08, 0x00, 0x00
};
static const guint8 _b_picture_count_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x09, 0x00, 0x00
};
static const guint8 _bitrate_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x0b, 0x00, 0x00
};
static const guint8 _profile_and_level_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x01, 0x01, 0x05, 0x04, 0x01, 0x06, 0x02, 0x01,
0x0a, 0x00, 0x00
};
gboolean
mxf_metadata_mpeg_video_descriptor_handle_tag (MXFMetadataGenericDescriptor * d,
const MXFPrimerPack * primer, guint16 tag, const guint8 * tag_data,
guint16 tag_size)
{
MXFMetadataMPEGVideoDescriptor *descriptor =
(MXFMetadataMPEGVideoDescriptor *) d;
gboolean ret = FALSE;
MXFUL *tag_ul = NULL;
if (!(tag_ul =
(MXFUL *) g_hash_table_lookup (primer->mappings,
GUINT_TO_POINTER (((guint) tag)))))
return FALSE;
if (memcmp (tag_ul, &_single_sequence_ul, 16) == 0) {
if (tag_size != 1)
goto error;
descriptor->single_sequence = GST_READ_UINT8 (tag_data);
GST_DEBUG (" single sequence = %s",
(descriptor->single_sequence) ? "yes" : "no");
ret = TRUE;
} else if (memcmp (tag_ul, &_constant_b_frames_ul, 16) == 0) {
if (tag_size != 1)
goto error;
descriptor->const_b_frames = GST_READ_UINT8 (tag_data);
GST_DEBUG (" constant b frames = %s",
(descriptor->single_sequence) ? "yes" : "no");
ret = TRUE;
} else if (memcmp (tag_ul, &_coded_content_type_ul, 16) == 0) {
if (tag_size != 1)
goto error;
descriptor->coded_content_type = GST_READ_UINT8 (tag_data);
GST_DEBUG (" coded content type = %u", descriptor->coded_content_type);
ret = TRUE;
} else if (memcmp (tag_ul, &_low_delay_ul, 16) == 0) {
if (tag_size != 1)
goto error;
descriptor->low_delay = GST_READ_UINT8 (tag_data);
GST_DEBUG (" low delay = %s", (descriptor->low_delay) ? "yes" : "no");
ret = TRUE;
} else if (memcmp (tag_ul, &_closed_gop_ul, 16) == 0) {
if (tag_size != 1)
goto error;
descriptor->closed_gop = GST_READ_UINT8 (tag_data);
GST_DEBUG (" closed gop = %s", (descriptor->closed_gop) ? "yes" : "no");
ret = TRUE;
} else if (memcmp (tag_ul, &_identical_gop_ul, 16) == 0) {
if (tag_size != 1)
goto error;
descriptor->identical_gop = GST_READ_UINT8 (tag_data);
GST_DEBUG (" identical gop = %s",
(descriptor->identical_gop) ? "yes" : "no");
ret = TRUE;
} else if (memcmp (tag_ul, &_max_gop_ul, 16) == 0) {
if (tag_size != 2)
goto error;
descriptor->max_gop = GST_READ_UINT16_BE (tag_data);
GST_DEBUG (" max gop = %u", descriptor->max_gop);
ret = TRUE;
} else if (memcmp (tag_ul, &_b_picture_count_ul, 16) == 0) {
if (tag_size != 2)
goto error;
descriptor->b_picture_count = GST_READ_UINT16_BE (tag_data);
GST_DEBUG (" b picture count = %u", descriptor->b_picture_count);
ret = TRUE;
} else if (memcmp (tag_ul, &_bitrate_ul, 16) == 0) {
if (tag_size != 4)
goto error;
descriptor->bitrate = GST_READ_UINT32_BE (tag_data);
GST_DEBUG (" bitrate = %u", descriptor->bitrate);
ret = TRUE;
} else if (memcmp (tag_ul, &_profile_and_level_ul, 16) == 0) {
if (tag_size != 1)
goto error;
descriptor->profile_and_level = GST_READ_UINT8 (tag_data);
GST_DEBUG (" profile & level = %u", descriptor->profile_and_level);
ret = TRUE;
} else {
ret =
mxf_metadata_cdci_picture_essence_descriptor_handle_tag (d, primer, tag,
tag_data, tag_size);
}
return ret;
error:
GST_ERROR ("Invalid mpeg video descriptor tag 0x%04x of size %u", tag,
tag_size);
return FALSE;
}
void mxf_metadata_mpeg_video_descriptor_reset
(MXFMetadataMPEGVideoDescriptor * descriptor)
{
g_return_if_fail (descriptor != NULL);
mxf_metadata_cdci_picture_essence_descriptor_reset (
(MXFMetadataCDCIPictureEssenceDescriptor *) descriptor);
MXF_METADATA_DESCRIPTOR_CLEAR (descriptor, MXFMetadataMPEGVideoDescriptor,
MXFMetadataCDCIPictureEssenceDescriptor);
}
gboolean
mxf_is_mpeg_video_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 381M 7 */
if (mxf_is_generic_container_essence_container_label (key) &&
key->u[12] == 0x02 &&
(key->u[13] == 0x04 ||
key->u[13] == 0x07 || key->u[13] == 0x08 || key->u[13] == 0x09))
return TRUE;
}
return FALSE;
}
static GstFlowReturn
mxf_mpeg_video_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
GstCaps * caps, MXFMetadataGenericPackage * package,
MXFMetadataTrack * track, MXFMetadataStructuralComponent * component,
gpointer mapping_data, GstBuffer ** outbuf)
{
*outbuf = buffer;
/* SMPTE 381M 6.1 */
if (key->u[12] != 0x15 || (key->u[14] != 0x05 && key->u[14] != 0x06
&& key->u[14] != 0x07)) {
GST_ERROR ("Invalid MPEG video essence element");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
GstCaps *
mxf_mpeg_video_create_caps (MXFMetadataGenericPackage * package,
MXFMetadataTrack * track, GstTagList ** tags,
MXFEssenceElementHandler * handler, gpointer * mapping_data)
{
MXFMetadataMPEGVideoDescriptor *d = NULL;
MXFMetadataFileDescriptor *f = NULL;
MXFMetadataGenericPictureEssenceDescriptor *p = 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])->type ==
MXF_METADATA_MPEG_VIDEO_DESCRIPTOR) {
d = (MXFMetadataMPEGVideoDescriptor *) track->descriptor[i];
f = track->descriptor[i];
p = (MXFMetadataGenericPictureEssenceDescriptor *) track->descriptor[i];
break;
} else if (((MXFMetadataGenericDescriptor *) track->descriptor[i])->type ==
MXF_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR ||
((MXFMetadataGenericDescriptor *) track->descriptor[i])->type ==
MXF_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR) {
f = track->descriptor[i];
p = (MXFMetadataGenericPictureEssenceDescriptor *) track->descriptor[i];
break;
} else if (((MXFMetadataGenericDescriptor *) track->descriptor[i])->type ==
MXF_METADATA_FILE_DESCRIPTOR) {
f = track->descriptor[i];
}
}
if (!f) {
GST_ERROR ("No descriptor found for this track");
return NULL;
}
*handler = mxf_mpeg_video_handle_essence_element;
/* SMPTE 381M 7 */
if (f->essence_container.u[13] == 0x04) {
/* FIXME: get mpeg version somehow */
GST_DEBUG ("Found MPEG ES stream");
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 1,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
} else if (f->essence_container.u[13] == 0x07) {
GST_ERROR ("MPEG PES streams not supported yet");
return NULL;
} else if (f->essence_container.u[13] == 0x08) {
/* FIXME: get mpeg version somehow */
GST_DEBUG ("Found MPEG PS stream");
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 1,
"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
} else if (f->essence_container.u[13] == 0x09) {
GST_DEBUG ("Found MPEG TS stream");
caps = gst_caps_new_simple ("video/mpegts", NULL);
}
if (p)
mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
return caps;
}