gstreamer/gst/mxf/mxfmpeg.c
Sebastian Dröge bc93b81dd5 gst/mxf/: Convert the structural metadata to GstMiniObjects to make a lot of code easier and to make everything bette...
Original commit message from CVS:
* gst/mxf/Makefile.am:
* gst/mxf/mxf.c: (plugin_init):
* gst/mxf/mxfaes-bwf.c:
(mxf_metadata_wave_audio_essence_descriptor_handle_tag),
(mxf_metadata_wave_audio_essence_descriptor_init),
(mxf_metadata_wave_audio_essence_descriptor_class_init),
(mxf_metadata_aes3_audio_essence_descriptor_finalize),
(mxf_metadata_aes3_audio_essence_descriptor_handle_tag),
(mxf_metadata_aes3_audio_essence_descriptor_init),
(mxf_metadata_aes3_audio_essence_descriptor_class_init),
(mxf_is_aes_bwf_essence_track), (mxf_bwf_create_caps),
(mxf_aes3_create_caps), (mxf_aes_bwf_create_caps),
(mxf_aes_bwf_init):
* gst/mxf/mxfaes-bwf.h:
* gst/mxf/mxfalaw.c: (mxf_is_alaw_essence_track),
(mxf_alaw_create_caps), (mxf_alaw_init):
* gst/mxf/mxfalaw.h:
* gst/mxf/mxfd10.c: (mxf_is_d10_essence_track),
(mxf_d10_create_caps), (mxf_d10_init):
* gst/mxf/mxfd10.h:
* gst/mxf/mxfdemux.c: (gst_mxf_demux_reset_metadata),
(gst_mxf_demux_handle_header_metadata_resolve_references),
(gst_mxf_demux_find_package), (gst_mxf_demux_choose_package),
(gst_mxf_demux_handle_header_metadata_update_streams),
(gst_mxf_demux_handle_metadata),
(gst_mxf_demux_handle_generic_container_essence_element),
(gst_mxf_demux_handle_klv_packet), (gst_mxf_demux_src_query):
* gst/mxf/mxfdemux.h:
* gst/mxf/mxfdv-dif.c: (mxf_is_dv_dif_essence_track),
(mxf_dv_dif_create_caps), (mxf_dv_dif_init):
* gst/mxf/mxfdv-dif.h:
* gst/mxf/mxfjpeg2000.c: (mxf_is_jpeg2000_essence_track),
(mxf_jpeg2000_create_caps), (mxf_jpeg2000_init):
* gst/mxf/mxfjpeg2000.h:
* gst/mxf/mxfmetadata.c: (mxf_metadata_base_finalize),
(mxf_metadata_base_handle_tag), (mxf_metadata_base_resolve),
(mxf_metadata_base_init), (mxf_metadata_base_class_init),
(mxf_metadata_parse), (mxf_metadata_resolve),
(mxf_metadata_handle_tag), (mxf_metadata_class_init),
(mxf_metadata_init), (mxf_metadata_init_types),
(mxf_metadata_register), (mxf_metadata_new),
(mxf_metadata_preface_finalize), (mxf_metadata_preface_handle_tag),
(mxf_metadata_preface_resolve), (mxf_metadata_preface_init),
(mxf_metadata_preface_class_init),
(mxf_metadata_identification_finalize),
(mxf_metadata_identification_handle_tag),
(mxf_metadata_identification_init),
(mxf_metadata_identification_class_init),
(mxf_metadata_content_storage_finalize),
(mxf_metadata_content_storage_handle_tag),
(mxf_metadata_content_storage_resolve),
(mxf_metadata_content_storage_init),
(mxf_metadata_content_storage_class_init),
(mxf_metadata_essence_container_data_handle_tag),
(mxf_metadata_essence_container_data_resolve),
(mxf_metadata_essence_container_data_init),
(mxf_metadata_essence_container_data_class_init),
(mxf_metadata_generic_package_finalize),
(mxf_metadata_generic_package_handle_tag),
(mxf_metadata_generic_package_resolve),
(mxf_metadata_generic_package_init),
(mxf_metadata_generic_package_class_init),
(mxf_metadata_material_package_resolve),
(mxf_metadata_material_package_init),
(mxf_metadata_material_package_class_init),
(mxf_metadata_source_package_finalize),
(mxf_metadata_source_package_handle_tag),
(mxf_metadata_source_package_resolve),
(mxf_metadata_source_package_init),
(mxf_metadata_source_package_class_init),
(mxf_metadata_track_finalize), (mxf_metadata_track_handle_tag),
(mxf_metadata_track_resolve), (mxf_metadata_track_init),
(mxf_metadata_track_class_init),
(mxf_metadata_track_identifier_parse),
(mxf_metadata_timeline_track_handle_tag),
(mxf_metadata_timeline_track_init),
(mxf_metadata_timeline_track_class_init),
(mxf_metadata_event_track_handle_tag),
(mxf_metadata_event_track_init),
(mxf_metadata_event_track_class_init),
(mxf_metadata_static_track_init),
(mxf_metadata_static_track_class_init),
(mxf_metadata_sequence_finalize),
(mxf_metadata_sequence_handle_tag),
(mxf_metadata_sequence_resolve), (mxf_metadata_sequence_init),
(mxf_metadata_sequence_class_init),
(mxf_metadata_structural_component_handle_tag),
(mxf_metadata_structural_component_init),
(mxf_metadata_structural_component_class_init),
(mxf_metadata_timecode_component_handle_tag),
(mxf_metadata_timecode_component_init),
(mxf_metadata_timecode_component_class_init),
(mxf_metadata_source_clip_handle_tag),
(mxf_metadata_source_clip_resolve),
(mxf_metadata_source_clip_init),
(mxf_metadata_source_clip_class_init),
(mxf_metadata_dm_source_clip_finalize),
(mxf_metadata_dm_source_clip_handle_tag),
(mxf_metadata_dm_source_clip_init),
(mxf_metadata_dm_source_clip_class_init),
(mxf_metadata_dm_segment_finalize),
(mxf_metadata_dm_segment_handle_tag),
(mxf_metadata_dm_segment_resolve), (mxf_metadata_dm_segment_init),
(mxf_metadata_dm_segment_class_init),
(mxf_metadata_generic_descriptor_finalize),
(mxf_metadata_generic_descriptor_handle_tag),
(mxf_metadata_generic_descriptor_resolve),
(mxf_metadata_generic_descriptor_init),
(mxf_metadata_generic_descriptor_class_init),
(mxf_metadata_file_descriptor_handle_tag),
(mxf_metadata_file_descriptor_init),
(mxf_metadata_file_descriptor_class_init),
(mxf_metadata_generic_picture_essence_descriptor_handle_tag),
(mxf_metadata_generic_picture_essence_descriptor_init),
(mxf_metadata_generic_picture_essence_descriptor_class_init),
(mxf_metadata_generic_picture_essence_descriptor_set_caps),
(mxf_metadata_generic_sound_essence_descriptor_handle_tag),
(mxf_metadata_generic_sound_essence_descriptor_init),
(mxf_metadata_generic_sound_essence_descriptor_class_init),
(mxf_metadata_cdci_picture_essence_descriptor_handle_tag),
(mxf_metadata_cdci_picture_essence_descriptor_init),
(mxf_metadata_cdci_picture_essence_descriptor_class_init),
(mxf_metadata_rgba_picture_essence_descriptor_finalize),
(mxf_metadata_rgba_picture_essence_descriptor_handle_tag),
(mxf_metadata_rgba_picture_essence_descriptor_init),
(mxf_metadata_rgba_picture_essence_descriptor_class_init),
(mxf_metadata_generic_data_essence_descriptor_handle_tag),
(mxf_metadata_generic_data_essence_descriptor_init),
(mxf_metadata_generic_data_essence_descriptor_class_init),
(mxf_metadata_multiple_descriptor_finalize),
(mxf_metadata_multiple_descriptor_handle_tag),
(mxf_metadata_multiple_descriptor_resolve),
(mxf_metadata_multiple_descriptor_init),
(mxf_metadata_multiple_descriptor_class_init),
(mxf_metadata_locator_init), (mxf_metadata_locator_class_init),
(mxf_metadata_text_locator_finalize),
(mxf_metadata_text_locator_handle_tag),
(mxf_metadata_text_locator_init),
(mxf_metadata_text_locator_class_init),
(mxf_metadata_network_locator_finalize),
(mxf_metadata_network_locator_handle_tag),
(mxf_metadata_network_locator_init),
(mxf_metadata_network_locator_class_init):
* gst/mxf/mxfmetadata.h:
* gst/mxf/mxfmpeg.c:
(mxf_metadata_mpeg_video_descriptor_handle_tag),
(mxf_metadata_mpeg_video_descriptor_init),
(mxf_metadata_mpeg_video_descriptor_class_init),
(mxf_is_mpeg_essence_track), (mxf_mpeg_es_create_caps),
(mxf_mpeg_create_caps), (mxf_mpeg_init):
* gst/mxf/mxfmpeg.h:
* gst/mxf/mxfparse.c: (mxf_index_table_segment_parse),
(mxf_local_tag_add_to_hash_table):
* gst/mxf/mxfparse.h:
* gst/mxf/mxftypes.h:
* gst/mxf/mxfup.c: (mxf_is_up_essence_track), (mxf_up_create_caps),
(mxf_up_init):
* gst/mxf/mxfup.h:
Convert the structural metadata to GstMiniObjects to make a lot of
code easier and to make everything better extensible.
Add a "registry" for metadata handlers to improve extensibility even
more and to remove metadata type specifics from mxfdemux.
Clean up a lot of parts and add some more NULL checks.
2008-12-15 17:27:00 +00:00

514 lines
17 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
* - h264 support (see SMPTE RP2008)
* - AAC support
*/
#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
};
G_DEFINE_TYPE (MXFMetadataMPEGVideoDescriptor,
mxf_metadata_mpeg_video_descriptor,
MXF_TYPE_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR);
static gboolean
mxf_metadata_mpeg_video_descriptor_handle_tag (MXFMetadataBase * metadata,
MXFPrimerPack * primer, guint16 tag, const guint8 * tag_data,
guint tag_size)
{
MXFMetadataMPEGVideoDescriptor *self =
MXF_METADATA_MPEG_VIDEO_DESCRIPTOR (metadata);
gboolean ret = TRUE;
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;
self->single_sequence = GST_READ_UINT8 (tag_data);
GST_DEBUG (" single sequence = %s",
(self->single_sequence) ? "yes" : "no");
} else if (memcmp (tag_ul, &_constant_b_frames_ul, 16) == 0) {
if (tag_size != 1)
goto error;
self->const_b_frames = GST_READ_UINT8 (tag_data);
GST_DEBUG (" constant b frames = %s",
(self->single_sequence) ? "yes" : "no");
} else if (memcmp (tag_ul, &_coded_content_type_ul, 16) == 0) {
if (tag_size != 1)
goto error;
self->coded_content_type = GST_READ_UINT8 (tag_data);
GST_DEBUG (" coded content type = %u", self->coded_content_type);
} else if (memcmp (tag_ul, &_low_delay_ul, 16) == 0) {
if (tag_size != 1)
goto error;
self->low_delay = GST_READ_UINT8 (tag_data);
GST_DEBUG (" low delay = %s", (self->low_delay) ? "yes" : "no");
} else if (memcmp (tag_ul, &_closed_gop_ul, 16) == 0) {
if (tag_size != 1)
goto error;
self->closed_gop = GST_READ_UINT8 (tag_data);
GST_DEBUG (" closed gop = %s", (self->closed_gop) ? "yes" : "no");
} else if (memcmp (tag_ul, &_identical_gop_ul, 16) == 0) {
if (tag_size != 1)
goto error;
self->identical_gop = GST_READ_UINT8 (tag_data);
GST_DEBUG (" identical gop = %s", (self->identical_gop) ? "yes" : "no");
} else if (memcmp (tag_ul, &_max_gop_ul, 16) == 0) {
if (tag_size != 2)
goto error;
self->max_gop = GST_READ_UINT16_BE (tag_data);
GST_DEBUG (" max gop = %u", self->max_gop);
} else if (memcmp (tag_ul, &_b_picture_count_ul, 16) == 0) {
if (tag_size != 2)
goto error;
self->b_picture_count = GST_READ_UINT16_BE (tag_data);
GST_DEBUG (" b picture count = %u", self->b_picture_count);
} else if (memcmp (tag_ul, &_bitrate_ul, 16) == 0) {
if (tag_size != 4)
goto error;
self->bitrate = GST_READ_UINT32_BE (tag_data);
GST_DEBUG (" bitrate = %u", self->bitrate);
} else if (memcmp (tag_ul, &_profile_and_level_ul, 16) == 0) {
if (tag_size != 1)
goto error;
self->profile_and_level = GST_READ_UINT8 (tag_data);
GST_DEBUG (" profile & level = %u", self->profile_and_level);
} else {
ret =
MXF_METADATA_BASE_CLASS
(mxf_metadata_mpeg_video_descriptor_parent_class)->handle_tag (metadata,
primer, tag, tag_data, tag_size);
}
return ret;
error:
GST_ERROR ("Invalid MPEG video descriptor local tag 0x%04x of size %u", tag,
tag_size);
return FALSE;
}
static void
mxf_metadata_mpeg_video_descriptor_init (MXFMetadataMPEGVideoDescriptor * self)
{
}
static void
mxf_metadata_mpeg_video_descriptor_class_init
(MXFMetadataMPEGVideoDescriptorClass * klass)
{
MXFMetadataBaseClass *metadata_base_class = (MXFMetadataBaseClass *) klass;
metadata_base_class->handle_tag =
mxf_metadata_mpeg_video_descriptor_handle_tag;
}
gboolean
mxf_is_mpeg_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;
if (!d)
continue;
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;
}
static GstFlowReturn
mxf_mpeg_audio_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 6.2 */
if (key->u[12] != 0x16 || (key->u[14] != 0x05 && key->u[14] != 0x06
&& key->u[14] != 0x07)) {
GST_ERROR ("Invalid MPEG audio essence element");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
/* Private uid used by SONY C0023S01.mxf,
* taken from the ffmpeg mxf demuxer */
static const guint8 sony_mpeg4_extradata[] = {
0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x01, 0x0e, 0x06, 0x06, 0x02, 0x02,
0x01, 0x00, 0x00
};
/* RP224 */
static const MXFUL sound_essence_compression_ac3 = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x01, 0x04, 0x02, 0x02, 0x02,
0x03, 0x02, 0x01, 0x00}
};
static const MXFUL sound_essence_compression_mpeg1_layer1 = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x01, 0x04, 0x02, 0x02, 0x02,
0x03, 0x02, 0x04, 0x00}
};
static const MXFUL sound_essence_compression_mpeg1_layer12 = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x01, 0x04, 0x02, 0x02, 0x02,
0x03, 0x02, 0x05, 0x00}
};
static const MXFUL sound_essence_compression_mpeg1_layer2 = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x08, 0x04, 0x02, 0x02, 0x02,
0x03, 0x02, 0x05, 0x01}
};
static const MXFUL sound_essence_compression_mpeg2_layer1 = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x08, 0x04, 0x02, 0x02, 0x02,
0x03, 0x02, 0x06, 0x00}
};
static const MXFUL sound_essence_compression_dts = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x08, 0x04, 0x02, 0x02, 0x02,
0x03, 0x02, 0x1c, 0x00}
};
static GstCaps *
mxf_mpeg_es_create_caps (MXFMetadataGenericPackage * package,
MXFMetadataTrack * track, GstTagList ** tags,
MXFEssenceElementHandler * handler, gpointer * mapping_data,
MXFMetadataGenericPictureEssenceDescriptor * p,
MXFMetadataGenericSoundEssenceDescriptor * s)
{
GstCaps *caps = NULL;
const gchar *codec_name = NULL;
/* SMPTE RP224 */
if (p) {
if (mxf_ul_is_zero (&p->picture_essence_coding)) {
GST_WARNING ("No picture essence coding defined, assuming MPEG2");
caps =
gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 2,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
codec_name = "MPEG-2 Video";
} else if (p->picture_essence_coding.u[0] != 0x06
|| p->picture_essence_coding.u[1] != 0x0e
|| p->picture_essence_coding.u[2] != 0x2b
|| p->picture_essence_coding.u[3] != 0x34
|| p->picture_essence_coding.u[4] != 0x04
|| p->picture_essence_coding.u[5] != 0x01
|| p->picture_essence_coding.u[6] != 0x01
|| p->picture_essence_coding.u[8] != 0x04
|| p->picture_essence_coding.u[9] != 0x01
|| p->picture_essence_coding.u[10] != 0x02
|| p->picture_essence_coding.u[11] != 0x02
|| p->picture_essence_coding.u[12] != 0x01) {
GST_ERROR ("No MPEG picture essence coding");
caps = NULL;
} else if (p->picture_essence_coding.u[13] >= 0x01 &&
p->picture_essence_coding.u[13] <= 0x08) {
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 2,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
codec_name = "MPEG-2 Video";
} else if (p->picture_essence_coding.u[13] == 0x10) {
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 1,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
codec_name = "MPEG-1 Video";
} else if (p->picture_essence_coding.u[13] == 0x20) {
MXFLocalTag *local_tag =
(((MXFMetadataBase *) p)->other_tags) ?
g_hash_table_lookup (((MXFMetadataBase *)
p)->other_tags, &sony_mpeg4_extradata) : NULL;
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 4,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
if (local_tag) {
GstBuffer *codec_data = NULL;
codec_data = gst_buffer_new_and_alloc (local_tag->size);
memcpy (GST_BUFFER_DATA (codec_data), local_tag->data, local_tag->size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, codec_data,
NULL);
gst_buffer_unref (codec_data);
}
codec_name = "MPEG-4 Video";
} else {
GST_ERROR ("Unsupported MPEG picture essence coding 0x%02x",
p->picture_essence_coding.u[13]);
caps = NULL;
}
if (caps)
*handler = mxf_mpeg_video_handle_essence_element;
} else if (s) {
if (mxf_ul_is_zero (&s->sound_essence_compression)) {
GST_WARNING ("Zero sound essence compression, assuming MPEG1 audio");
caps =
gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, 1,
NULL);
codec_name = "MPEG-1 Audio";
} else if (mxf_ul_is_equal (&s->sound_essence_compression,
&sound_essence_compression_ac3)) {
caps = gst_caps_new_simple ("audio/ac3", NULL);
codec_name = "AC3 Audio";
} else if (mxf_ul_is_equal (&s->sound_essence_compression,
&sound_essence_compression_mpeg1_layer1)) {
caps =
gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, 1,
"layer", G_TYPE_INT, 1, NULL);
codec_name = "MPEG-1 Layer 1 Audio";
} else if (mxf_ul_is_equal (&s->sound_essence_compression,
&sound_essence_compression_mpeg1_layer12)) {
caps =
gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, 1,
NULL);
codec_name = "MPEG-1 Audio";
} else if (mxf_ul_is_equal (&s->sound_essence_compression,
&sound_essence_compression_mpeg1_layer2)) {
caps =
gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, 1,
"layer", G_TYPE_INT, 2, NULL);
codec_name = "MPEG-1 Layer 2 Audio";
} else if (mxf_ul_is_equal (&s->sound_essence_compression,
&sound_essence_compression_mpeg2_layer1)) {
caps =
gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, 1,
"layer", G_TYPE_INT, 1, "mpegaudioversion", G_TYPE_INT, 2, NULL);
codec_name = "MPEG-2 Layer 1 Audio";
} else if (mxf_ul_is_equal (&s->sound_essence_compression,
&sound_essence_compression_dts)) {
caps = gst_caps_new_simple ("audio/x-dts", NULL);
codec_name = "Dolby DTS Audio";
}
if (caps) {
if (s->audio_sampling_rate.n != 0 && s->audio_sampling_rate.d != 0)
gst_caps_set_simple (caps, "rate", G_TYPE_INT,
(gint) (((gdouble) s->audio_sampling_rate.n) /
((gdouble) s->audio_sampling_rate.d) + 0.5), NULL);
if (s->channel_count != 0)
gst_caps_set_simple (caps, "channels", G_TYPE_INT, s->channel_count,
NULL);
*handler = mxf_mpeg_audio_handle_essence_element;
}
}
if (caps) {
if (!*tags)
*tags = gst_tag_list_new ();
if (codec_name)
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
codec_name, NULL);
}
return caps;
}
GstCaps *
mxf_mpeg_create_caps (MXFMetadataGenericPackage * package,
MXFMetadataTrack * track, GstTagList ** tags,
MXFEssenceElementHandler * handler, gpointer * mapping_data)
{
MXFMetadataFileDescriptor *f = NULL;
MXFMetadataGenericPictureEssenceDescriptor *p = NULL;
MXFMetadataGenericSoundEssenceDescriptor *s = 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 (!track->descriptor[i])
continue;
if (MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
descriptor[i])) {
f = track->descriptor[i];
p = (MXFMetadataGenericPictureEssenceDescriptor *) track->descriptor[i];
break;
} else if (MXF_IS_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR (track->
descriptor[i])) {
f = track->descriptor[i];
s = (MXFMetadataGenericSoundEssenceDescriptor *) track->descriptor[i];
break;
}
}
if (!f) {
GST_ERROR ("No descriptor found for this track");
return NULL;
}
/* SMPTE 381M 7 */
if (f->essence_container.u[13] == 0x04) {
GST_DEBUG ("Found MPEG ES stream");
caps =
mxf_mpeg_es_create_caps (package, track, tags, handler, mapping_data, p,
s);
} 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);
if (!*tags)
*tags = gst_tag_list_new ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"MPEG PS", NULL);
} else if (f->essence_container.u[13] == 0x09) {
GST_DEBUG ("Found MPEG TS stream");
caps = gst_caps_new_simple ("video/mpegts", NULL);
if (!*tags)
*tags = gst_tag_list_new ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"MPEG TS", NULL);
}
if (p)
mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
return caps;
}
void
mxf_mpeg_init (void)
{
mxf_metadata_register (0x0151, MXF_TYPE_METADATA_MPEG_VIDEO_DESCRIPTOR);
}