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gstreamer/gst/mxf/mxfmpeg.c
Edward Hervey f502ef9053 mxfmpeg: Fix essence coding detection 
The picture essence coding matching was wrong. Use the proper "base" MXFUL for
video mpeg compression for matching.

Also handle the case where some old files would put the essence container label
in the essence coding field

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2371>
2021-07-21 14:33:19 +00:00

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/* GStreamer
* Copyright (C) 2008-2009 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/* Implementation of SMPTE 381M - Mapping MPEG streams into the MXF
* Generic Container
*
* RP 2008 - Mapping AVC Streams into the MXF Generic Container
*
*/
/* TODO:
* - Handle PES streams
* - Fix TS/PS demuxers to forward timestamps
* - AAC support
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/video.h>
#include <string.h>
#include "mxfmpeg.h"
#include "mxfquark.h"
#include "mxfessence.h"
#include <gst/base/gstbytereader.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
};
/* SMPTE 381M 8.1 */
#define MXF_TYPE_METADATA_MPEG_VIDEO_DESCRIPTOR \
(mxf_metadata_mpeg_video_descriptor_get_type())
#define MXF_METADATA_MPEG_VIDEO_DESCRIPTOR(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),MXF_TYPE_METADATA_MPEG_VIDEO_DESCRIPTOR, MXFMetadataMPEGVideoDescriptor))
#define MXF_IS_METADATA_MPEG_VIDEO_DESCRIPTOR(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),MXF_TYPE_METADATA_MPEG_VIDEO_DESCRIPTOR))
typedef struct _MXFMetadataMPEGVideoDescriptor MXFMetadataMPEGVideoDescriptor;
typedef MXFMetadataClass MXFMetadataMPEGVideoDescriptorClass;
GType mxf_metadata_mpeg_video_descriptor_get_type (void);
struct _MXFMetadataMPEGVideoDescriptor
{
MXFMetadataCDCIPictureEssenceDescriptor parent;
gboolean single_sequence;
gboolean const_b_frames;
guint8 coded_content_type;
gboolean low_delay;
gboolean closed_gop;
gboolean identical_gop;
guint16 max_gop;
guint16 b_picture_count;
guint32 bitrate;
guint8 profile_and_level;
};
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 GstStructure *
mxf_metadata_mpeg_video_descriptor_to_structure (MXFMetadataBase * m)
{
GstStructure *ret =
MXF_METADATA_BASE_CLASS
(mxf_metadata_mpeg_video_descriptor_parent_class)->to_structure (m);
MXFMetadataMPEGVideoDescriptor *self = MXF_METADATA_MPEG_VIDEO_DESCRIPTOR (m);
gst_structure_id_set (ret, MXF_QUARK (SINGLE_SEQUENCE), G_TYPE_BOOLEAN,
self->single_sequence, MXF_QUARK (CONST_B_FRAMES), G_TYPE_BOOLEAN,
self->const_b_frames, MXF_QUARK (CODED_CONTENT_TYPE), G_TYPE_UCHAR,
self->coded_content_type, MXF_QUARK (LOW_DELAY), G_TYPE_BOOLEAN,
self->low_delay, MXF_QUARK (CLOSED_GOP), G_TYPE_BOOLEAN, self->closed_gop,
MXF_QUARK (IDENTICAL_GOP), G_TYPE_BOOLEAN, self->identical_gop,
MXF_QUARK (PROFILE_AND_LEVEL), G_TYPE_UCHAR, self->profile_and_level,
NULL);
if (self->max_gop)
gst_structure_id_set (ret, MXF_QUARK (MAX_GOP), G_TYPE_UINT, self->max_gop,
NULL);
if (self->b_picture_count)
gst_structure_id_set (ret, MXF_QUARK (B_PICTURE_COUNT), G_TYPE_UINT,
self->b_picture_count, NULL);
if (self->bitrate)
gst_structure_id_set (ret, MXF_QUARK (BITRATE), G_TYPE_UINT, self->bitrate,
NULL);
return ret;
}
static GList *
mxf_metadata_mpeg_video_descriptor_write_tags (MXFMetadataBase * m,
MXFPrimerPack * primer)
{
MXFMetadataMPEGVideoDescriptor *self = MXF_METADATA_MPEG_VIDEO_DESCRIPTOR (m);
GList *ret =
MXF_METADATA_BASE_CLASS
(mxf_metadata_mpeg_video_descriptor_parent_class)->write_tags (m, primer);
MXFLocalTag *t;
if (self->single_sequence != -1) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_single_sequence_ul, 16);
t->size = 1;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT8 (t->data, (self->single_sequence) ? 1 : 0);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->const_b_frames) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_constant_b_frames_ul, 16);
t->size = 1;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT8 (t->data, (self->const_b_frames) ? 1 : 0);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->coded_content_type) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_coded_content_type_ul, 16);
t->size = 1;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT8 (t->data, self->coded_content_type);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->low_delay) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_low_delay_ul, 16);
t->size = 1;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT8 (t->data, (self->low_delay) ? 1 : 0);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->closed_gop) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_closed_gop_ul, 16);
t->size = 1;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT8 (t->data, (self->closed_gop) ? 1 : 0);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->identical_gop) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_identical_gop_ul, 16);
t->size = 1;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT8 (t->data, (self->identical_gop) ? 1 : 0);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->max_gop) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_identical_gop_ul, 16);
t->size = 2;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT16_BE (t->data, self->max_gop);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->b_picture_count) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_b_picture_count_ul, 16);
t->size = 2;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT16_BE (t->data, self->b_picture_count);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->bitrate) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_bitrate_ul, 16);
t->size = 4;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT32_BE (t->data, self->bitrate);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
if (self->profile_and_level) {
t = g_slice_new0 (MXFLocalTag);
memcpy (&t->ul, &_profile_and_level_ul, 16);
t->size = 1;
t->data = g_slice_alloc (t->size);
t->g_slice = TRUE;
GST_WRITE_UINT8 (t->data, self->profile_and_level);
mxf_primer_pack_add_mapping (primer, 0, &t->ul);
ret = g_list_prepend (ret, t);
}
return ret;
}
static void
mxf_metadata_mpeg_video_descriptor_init (MXFMetadataMPEGVideoDescriptor * self)
{
self->single_sequence = -1;
}
static void
mxf_metadata_mpeg_video_descriptor_class_init
(MXFMetadataMPEGVideoDescriptorClass * klass)
{
MXFMetadataBaseClass *metadata_base_class = (MXFMetadataBaseClass *) klass;
MXFMetadataClass *metadata_class = (MXFMetadataClass *) klass;
metadata_base_class->handle_tag =
mxf_metadata_mpeg_video_descriptor_handle_tag;
metadata_base_class->name_quark = MXF_QUARK (MPEG_VIDEO_DESCRIPTOR);
metadata_base_class->to_structure =
mxf_metadata_mpeg_video_descriptor_to_structure;
metadata_base_class->write_tags =
mxf_metadata_mpeg_video_descriptor_write_tags;
metadata_class->type = 0x0151;
}
typedef enum
{
MXF_MPEG_ESSENCE_TYPE_OTHER = 0,
MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2,
MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG4,
MXF_MPEG_ESSENCE_TYPE_VIDEO_AVC
} MXFMPEGEssenceType;
static gboolean
mxf_is_mpeg_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 381M 7 */
/* SMPTE RP2008 8.1 */
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 ||
key->u[13] == 0x0f || key->u[13] == 0x10))
return TRUE;
}
return FALSE;
}
/* See ISO/IEC 13818-2 for MPEG ES format */
gboolean
mxf_mpeg_is_mpeg2_keyframe (GstBuffer * buffer)
{
GstMapInfo map;
GstByteReader reader;
guint32 tmp;
gboolean ret = FALSE;
gst_buffer_map (buffer, &map, GST_MAP_READ);
gst_byte_reader_init (&reader, map.data, map.size);
while (gst_byte_reader_get_remaining (&reader) > 3) {
if (gst_byte_reader_peek_uint24_be (&reader, &tmp) && tmp == 0x000001) {
guint8 type = 0;
/* Found sync code */
gst_byte_reader_skip_unchecked (&reader, 3);
if (!gst_byte_reader_get_uint8 (&reader, &type))
break;
/* GOP packets are meant as random access markers */
if (type == 0xb8) {
ret = TRUE;
goto done;
} else if (type == 0x00) {
guint8 pic_type = 0;
if (!gst_byte_reader_skip (&reader, 5))
break;
if (!gst_byte_reader_get_uint8 (&reader, &pic_type))
break;
pic_type = (pic_type >> 3) & 0x07;
if (pic_type == 0x01) {
ret = TRUE;
}
goto done;
}
} else if (gst_byte_reader_skip (&reader, 1) == FALSE)
break;
}
done:
gst_buffer_unmap (buffer, &map);
return ret;
}
static gboolean
mxf_mpeg_is_mpeg4_keyframe (GstBuffer * buffer)
{
GstMapInfo map;
GstByteReader reader;
guint32 tmp;
gboolean ret = FALSE;
gst_buffer_map (buffer, &map, GST_MAP_READ);
gst_byte_reader_init (&reader, map.data, map.size);
while (gst_byte_reader_get_remaining (&reader) > 3) {
if (gst_byte_reader_peek_uint24_be (&reader, &tmp) && tmp == 0x000001) {
guint8 type = 0;
/* Found sync code */
gst_byte_reader_skip_unchecked (&reader, 3);
if (!gst_byte_reader_get_uint8 (&reader, &type))
break;
if (type == 0xb6) {
guint8 pic_type = 0;
if (!gst_byte_reader_get_uint8 (&reader, &pic_type))
break;
pic_type = (pic_type >> 6) & 0x03;
if (pic_type == 0) {
ret = TRUE;
}
goto done;
}
} else if (gst_byte_reader_skip (&reader, 1) == FALSE)
break;
}
done:
gst_buffer_unmap (buffer, &map);
return ret;
}
static GstFlowReturn
mxf_mpeg_video_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
GstCaps * caps, MXFMetadataTimelineTrack * track,
gpointer mapping_data, GstBuffer ** outbuf)
{
MXFMPEGEssenceType type = *((MXFMPEGEssenceType *) mapping_data);
*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;
}
switch (type) {
case MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2:
if (mxf_mpeg_is_mpeg2_keyframe (buffer))
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
break;
case MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG4:
if (mxf_mpeg_is_mpeg4_keyframe (buffer))
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
break;
default:
break;
}
return GST_FLOW_OK;
}
static GstFlowReturn
mxf_mpeg_audio_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
GstCaps * caps, MXFMetadataTimelineTrack * track,
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 video_mpeg_compression = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x01, 0x04, 0x01, 0x02, 0x02,
0x01,}
};
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_layer23 = { {
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, 0x01, 0x04, 0x02, 0x02, 0x02,
0x03, 0x02, 0x06, 0x00}
};
static const MXFUL sound_essence_compression_dts = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x01, 0x04, 0x02, 0x02, 0x02,
0x03, 0x02, 0x1c, 0x00}
};
static const MXFUL sound_essence_compression_aac = { {
0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x03, 0x04, 0x02, 0x02, 0x02,
0x03, 0x03, 0x01, 0x00}
};
static GstCaps *
mxf_mpeg_es_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
gboolean * intra_only, MXFEssenceElementHandleFunc * handler,
gpointer * mapping_data, MXFMetadataGenericPictureEssenceDescriptor * p,
MXFMetadataGenericSoundEssenceDescriptor * s)
{
GstCaps *caps = NULL;
const gchar *codec_name = NULL;
MXFMPEGEssenceType t, *mdata;
gchar str[48];
*mapping_data = g_malloc (sizeof (MXFMPEGEssenceType));
mdata = (MXFMPEGEssenceType *) * mapping_data;
/* SMPTE RP224 */
if (p) {
if (mxf_ul_is_zero (&p->picture_essence_coding) ||
mxf_ul_is_equal (&p->picture_essence_coding,
&p->parent.essence_container)) {
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";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
*intra_only = FALSE;
} else if (!mxf_ul_is_subclass (&video_mpeg_compression,
&p->picture_essence_coding)) {
GST_ERROR ("Not MPEG picture essence coding %s",
mxf_ul_to_string (&p->picture_essence_coding, str));
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";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
*intra_only = FALSE;
} 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";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
*intra_only = TRUE;
} 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) {
GstMapInfo map;
GstBuffer *codec_data = NULL;
codec_data = gst_buffer_new_and_alloc (local_tag->size);
gst_buffer_map (codec_data, &map, GST_MAP_WRITE);
memcpy (map.data, local_tag->data, local_tag->size);
gst_buffer_unmap (codec_data, &map);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, codec_data,
NULL);
gst_buffer_unref (codec_data);
}
codec_name = "MPEG-4 Video";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG4;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
*intra_only = FALSE;
} else if ((p->picture_essence_coding.u[13] >> 4) == 0x03) {
/* RP 2008 */
caps =
gst_caps_new_simple ("video/x-h264", "stream-format", G_TYPE_STRING,
"byte-stream", NULL);
codec_name = "h.264 Video";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_AVC;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
*intra_only = FALSE;
} 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_empty_simple ("audio/x-ac3");
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_layer23)) {
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_empty_simple ("audio/x-dts");
codec_name = "Dolby DTS Audio";
} else if (mxf_ul_is_equal (&s->sound_essence_compression,
&sound_essence_compression_aac)) {
caps = gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
2, NULL);
codec_name = "MPEG-2 AAC Audio";
}
if (caps) {
mxf_metadata_generic_sound_essence_descriptor_set_caps (s, caps);
*handler = mxf_mpeg_audio_handle_essence_element;
}
*intra_only = TRUE;
}
if (caps) {
if (!*tags)
*tags = gst_tag_list_new_empty ();
if (codec_name)
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
codec_name, NULL);
if (p && MXF_IS_METADATA_MPEG_VIDEO_DESCRIPTOR (p)
&& MXF_METADATA_MPEG_VIDEO_DESCRIPTOR (p)->bitrate) {
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_BITRATE,
MXF_METADATA_MPEG_VIDEO_DESCRIPTOR (p)->bitrate, NULL);
}
}
return caps;
}
static MXFEssenceWrapping
mxf_mpeg_get_track_wrapping (const MXFMetadataTimelineTrack * track)
{
guint i;
g_return_val_if_fail (track != NULL, MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING);
if (track->parent.descriptor == NULL) {
GST_ERROR ("No descriptor found for this track");
return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
}
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])
&& !MXF_IS_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR (track->
parent.descriptor[i]))
continue;
switch (track->parent.descriptor[i]->essence_container.u[15]) {
case 0x01:
return MXF_ESSENCE_WRAPPING_FRAME_WRAPPING;
break;
case 0x02:
return MXF_ESSENCE_WRAPPING_CLIP_WRAPPING;
break;
default:
return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
break;
}
}
return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
}
static GstCaps *
mxf_mpeg_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
gboolean * intra_only, MXFEssenceElementHandleFunc * handler,
gpointer * mapping_data)
{
MXFMetadataFileDescriptor *f = NULL;
MXFMetadataGenericPictureEssenceDescriptor *p = NULL;
MXFMetadataGenericSoundEssenceDescriptor *s = 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])) {
f = track->parent.descriptor[i];
p = (MXFMetadataGenericPictureEssenceDescriptor *) track->parent.
descriptor[i];
break;
} else if (MXF_IS_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR (track->
parent.descriptor[i])) {
f = track->parent.descriptor[i];
s = (MXFMetadataGenericSoundEssenceDescriptor *) track->parent.
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 (track, tags, intra_only, 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_empty ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"MPEG PS", NULL);
*intra_only = FALSE;
} else if (f->essence_container.u[13] == 0x09) {
GST_DEBUG ("Found MPEG TS stream");
caps = gst_caps_new_empty_simple ("video/mpegts");
if (!*tags)
*tags = gst_tag_list_new_empty ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"MPEG TS", NULL);
*intra_only = FALSE;
} else if (f->essence_container.u[13] == 0x0f) {
GST_DEBUG ("Found h264 NAL unit stream");
/* RP 2008 */
caps =
gst_caps_new_simple ("video/x-h264", "stream-format", G_TYPE_STRING,
"byte-stream", NULL);
if (!*tags)
*tags = gst_tag_list_new_empty ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"h.264 Video", NULL);
*intra_only = FALSE;
} else if (f->essence_container.u[13] == 0x10) {
GST_DEBUG ("Found h264 byte-stream stream");
/* RP 2008 */
caps =
gst_caps_new_simple ("video/x-h264", "stream-format", G_TYPE_STRING,
"byte-stream", NULL);
if (!*tags)
*tags = gst_tag_list_new_empty ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"h.264 Video", NULL);
*intra_only = FALSE;
}
if (p && caps)
mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
return caps;
}
static const MXFEssenceElementHandler mxf_mpeg_essence_element_handler = {
mxf_is_mpeg_essence_track,
mxf_mpeg_get_track_wrapping,
mxf_mpeg_create_caps
};
typedef struct
{
guint spf;
guint rate;
} MPEGAudioMappingData;
static GstFlowReturn
mxf_mpeg_audio_write_func (GstBuffer * buffer,
gpointer mapping_data, GstAdapter * adapter, GstBuffer ** outbuf,
gboolean flush)
{
*outbuf = buffer;
return GST_FLOW_OK;
}
static const guint8 mpeg_essence_container_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x02,
0x0d, 0x01, 0x03, 0x01, 0x02, 0x00, 0x00, 0x01
};
static MXFMetadataFileDescriptor *
mxf_mpeg_audio_get_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
MXFEssenceElementWriteFunc * handler, gpointer * mapping_data)
{
MXFMetadataGenericSoundEssenceDescriptor *ret;
GstStructure *s;
MPEGAudioMappingData *md = g_new0 (MPEGAudioMappingData, 1);
gint rate;
md->spf = -1;
*mapping_data = md;
ret = (MXFMetadataGenericSoundEssenceDescriptor *)
g_object_new (MXF_TYPE_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR, NULL);
s = gst_caps_get_structure (caps, 0);
if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
gint mpegversion;
if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
GST_ERROR ("Invalid caps %" GST_PTR_FORMAT, caps);
g_object_unref (ret);
return NULL;
}
if (mpegversion == 1) {
gint layer = 0;
gint mpegaudioversion = 0;
gst_structure_get_int (s, "layer", &layer);
gst_structure_get_int (s, "mpegaudioversion", &mpegaudioversion);
if (mpegaudioversion == 1 && layer == 1)
memcpy (&ret->sound_essence_compression,
&sound_essence_compression_mpeg1_layer1, 16);
else if (mpegaudioversion == 1 && (layer == 2 || layer == 3))
memcpy (&ret->sound_essence_compression,
&sound_essence_compression_mpeg1_layer23, 16);
else if (mpegaudioversion == 2 && layer == 1)
memcpy (&ret->sound_essence_compression,
&sound_essence_compression_mpeg2_layer1, 16);
if (layer == 1)
md->spf = 384;
else if (layer == 2 || mpegaudioversion == 1)
md->spf = 1152;
else
md->spf = 576; /* MPEG-2 or 2.5 */
/* Otherwise all 0x00, must be some kind of mpeg1 audio */
} else if (mpegversion == 2) {
memcpy (&ret->sound_essence_compression, &sound_essence_compression_aac,
16);
md->spf = 1024; /* FIXME: is this correct? */
}
} else if (strcmp (gst_structure_get_name (s), "audio/x-ac3") == 0) {
memcpy (&ret->sound_essence_compression, &sound_essence_compression_ac3,
16);
md->spf = 256; /* FIXME: is this correct? */
} else {
g_assert_not_reached ();
}
if (!gst_structure_get_int (s, "rate", &rate)) {
GST_ERROR ("Invalid rate");
g_object_unref (ret);
return NULL;
}
md->rate = rate;
memcpy (&ret->parent.essence_container, &mpeg_essence_container_ul, 16);
ret->parent.essence_container.u[13] = 0x04;
ret->parent.essence_container.u[14] = 0x40;
if (!mxf_metadata_generic_sound_essence_descriptor_from_caps (ret, caps)) {
g_object_unref (ret);
return NULL;
}
*handler = mxf_mpeg_audio_write_func;
return (MXFMetadataFileDescriptor *) ret;
}
static void
mxf_mpeg_audio_update_descriptor (MXFMetadataFileDescriptor * d, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf)
{
return;
}
static void
mxf_mpeg_audio_get_edit_rate (MXFMetadataFileDescriptor * a, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf, MXFMetadataSourcePackage * package,
MXFMetadataTimelineTrack * track, MXFFraction * edit_rate)
{
MPEGAudioMappingData *md = mapping_data;
edit_rate->n = md->rate;
edit_rate->d = md->spf;
}
static guint32
mxf_mpeg_audio_get_track_number_template (MXFMetadataFileDescriptor * a,
GstCaps * caps, gpointer mapping_data)
{
return (0x16 << 24) | (0x05 << 8);
}
static MXFEssenceElementWriter mxf_mpeg_audio_essence_element_writer = {
mxf_mpeg_audio_get_descriptor,
mxf_mpeg_audio_update_descriptor,
mxf_mpeg_audio_get_edit_rate,
mxf_mpeg_audio_get_track_number_template,
NULL,
{{0,}}
};
#define MPEG_AUDIO_CAPS \
"audio/mpeg, " \
"mpegversion = (int) 1, " \
"layer = (int) [ 1, 3 ], " \
"rate = (int) [ 8000, 48000 ], " \
"channels = (int) [ 1, 2 ], " \
"parsed = (boolean) TRUE; " \
"audio/x-ac3, " \
"rate = (int) [ 4000, 96000 ], " \
"channels = (int) [ 1, 6 ]; " \
"audio/mpeg, " \
"mpegversion = (int) 2, " \
"rate = (int) [ 8000, 96000 ], " \
"channels = (int) [ 1, 8 ]"
/* See ISO/IEC 13818-2 for MPEG ES format */
static gboolean
mxf_mpeg_is_mpeg2_frame (GstBuffer * buffer)
{
GstByteReader reader;
guint32 tmp;
GstMapInfo map;
gboolean ret = FALSE;
gst_buffer_map (buffer, &map, GST_MAP_READ);
gst_byte_reader_init (&reader, map.data, map.size);
while (gst_byte_reader_get_remaining (&reader) > 3) {
if (gst_byte_reader_peek_uint24_be (&reader, &tmp) && tmp == 0x000001) {
guint8 type = 0;
/* Found sync code */
gst_byte_reader_skip_unchecked (&reader, 3);
if (!gst_byte_reader_get_uint8 (&reader, &type))
break;
/* PICTURE */
if (type == 0x00) {
ret = TRUE;
goto done;
}
} else {
if (gst_byte_reader_skip (&reader, 1) == FALSE)
break;
}
}
done:
gst_buffer_unmap (buffer, &map);
return ret;
}
static gboolean
mxf_mpeg_is_mpeg4_frame (GstBuffer * buffer)
{
GstByteReader reader;
guint32 tmp;
GstMapInfo map;
gboolean ret = FALSE;
gst_buffer_map (buffer, &map, GST_MAP_READ);
gst_byte_reader_init (&reader, map.data, map.size);
while (gst_byte_reader_get_remaining (&reader) > 3) {
if (gst_byte_reader_peek_uint24_be (&reader, &tmp) && tmp == 0x000001) {
guint8 type = 0;
/* Found sync code */
gst_byte_reader_skip_unchecked (&reader, 3);
if (!gst_byte_reader_get_uint8 (&reader, &type))
break;
/* PICTURE */
if (type == 0xb6) {
ret = TRUE;
goto done;
}
} else {
if (gst_byte_reader_skip (&reader, 1) == FALSE)
break;
}
}
done:
gst_buffer_unmap (buffer, &map);
return ret;
}
static GstFlowReturn
mxf_mpeg_video_write_func (GstBuffer * buffer,
gpointer mapping_data, GstAdapter * adapter, GstBuffer ** outbuf,
gboolean flush)
{
MXFMPEGEssenceType type = MXF_MPEG_ESSENCE_TYPE_OTHER;
if (mapping_data)
type = *((MXFMPEGEssenceType *) mapping_data);
if (type == MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2) {
if (buffer && !mxf_mpeg_is_mpeg2_frame (buffer)) {
gst_adapter_push (adapter, buffer);
*outbuf = NULL;
return GST_FLOW_OK;
} else if (buffer || gst_adapter_available (adapter)) {
guint av = gst_adapter_available (adapter);
GstBuffer *ret;
GstMapInfo map;
if (buffer)
ret = gst_buffer_new_and_alloc (gst_buffer_get_size (buffer) + av);
else
ret = gst_buffer_new_and_alloc (av);
gst_buffer_map (ret, &map, GST_MAP_WRITE);
if (av) {
gconstpointer data = gst_adapter_map (adapter, av);
memcpy (map.data, data, av);
gst_adapter_unmap (adapter);
}
if (buffer) {
GstMapInfo buffermap;
gst_buffer_map (buffer, &buffermap, GST_MAP_READ);
memcpy (map.data + av, buffermap.data, buffermap.size);
gst_buffer_unmap (buffer, &buffermap);
gst_buffer_unref (buffer);
}
gst_buffer_unmap (ret, &map);
*outbuf = ret;
return GST_FLOW_OK;
}
} else if (type == MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG4) {
if (buffer && !mxf_mpeg_is_mpeg4_frame (buffer)) {
gst_adapter_push (adapter, buffer);
*outbuf = NULL;
return GST_FLOW_OK;
} else if (buffer || gst_adapter_available (adapter)) {
guint av = gst_adapter_available (adapter);
GstBuffer *ret;
GstMapInfo map;
if (buffer)
ret = gst_buffer_new_and_alloc (gst_buffer_get_size (buffer) + av);
else
ret = gst_buffer_new_and_alloc (av);
gst_buffer_map (ret, &map, GST_MAP_WRITE);
if (av) {
gconstpointer data = gst_adapter_map (adapter, av);
memcpy (map.data, data, av);
gst_adapter_unmap (adapter);
}
if (buffer) {
GstMapInfo buffermap;
gst_buffer_map (buffer, &buffermap, GST_MAP_READ);
memcpy (map.data + av, buffermap.data, buffermap.size);
gst_buffer_unmap (buffer, &buffermap);
gst_buffer_unref (buffer);
}
gst_buffer_unmap (ret, &map);
*outbuf = ret;
return GST_FLOW_OK;
}
}
*outbuf = buffer;
return GST_FLOW_OK;
}
static const guint8 mpeg_video_picture_essence_compression_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x00,
0x04, 0x01, 0x02, 0x02, 0x01, 0x00, 0x00, 0x00
};
static MXFMetadataFileDescriptor *
mxf_mpeg_video_get_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
MXFEssenceElementWriteFunc * handler, gpointer * mapping_data)
{
MXFMetadataMPEGVideoDescriptor *ret;
GstStructure *s;
ret = (MXFMetadataMPEGVideoDescriptor *)
g_object_new (MXF_TYPE_METADATA_MPEG_VIDEO_DESCRIPTOR, NULL);
s = gst_caps_get_structure (caps, 0);
memcpy (&ret->parent.parent.parent.essence_container,
&mpeg_essence_container_ul, 16);
memcpy (&ret->parent.parent.picture_essence_coding,
&mpeg_video_picture_essence_compression_ul, 16);
if (strcmp (gst_structure_get_name (s), "video/mpeg") == 0) {
gint mpegversion;
if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
GST_ERROR ("Invalid caps %" GST_PTR_FORMAT, caps);
g_object_unref (ret);
return NULL;
}
if (mpegversion == 1) {
MXFMPEGEssenceType type = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2;
*mapping_data = g_new0 (MXFMPEGEssenceType, 1);
memcpy (*mapping_data, &type, sizeof (MXFMPEGEssenceType));
ret->parent.parent.picture_essence_coding.u[7] = 0x03;
ret->parent.parent.picture_essence_coding.u[13] = 0x10;
ret->parent.parent.parent.essence_container.u[13] = 0x04;
ret->parent.parent.parent.essence_container.u[14] = 0x60;
} else if (mpegversion == 2) {
MXFMPEGEssenceType type = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2;
*mapping_data = g_new0 (MXFMPEGEssenceType, 1);
memcpy (*mapping_data, &type, sizeof (MXFMPEGEssenceType));
ret->parent.parent.picture_essence_coding.u[7] = 0x01;
ret->parent.parent.picture_essence_coding.u[13] = 0x01;
ret->parent.parent.parent.essence_container.u[13] = 0x04;
ret->parent.parent.parent.essence_container.u[14] = 0x60;
} else {
const GValue *v;
const GstBuffer *codec_data;
MXFMPEGEssenceType type = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG4;
*mapping_data = g_new0 (MXFMPEGEssenceType, 1);
memcpy (*mapping_data, &type, sizeof (MXFMPEGEssenceType));
ret->parent.parent.picture_essence_coding.u[7] = 0x03;
ret->parent.parent.picture_essence_coding.u[13] = 0x20;
ret->parent.parent.parent.essence_container.u[13] = 0x04;
ret->parent.parent.parent.essence_container.u[14] = 0x60;
if ((v = gst_structure_get_value (s, "codec_data"))) {
MXFLocalTag *t = g_slice_new0 (MXFLocalTag);
GstMapInfo map;
codec_data = gst_value_get_buffer (v);
gst_buffer_map ((GstBuffer *) codec_data, &map, GST_MAP_READ);
t->size = map.size;
t->data = g_memdup (map.data, map.size);
gst_buffer_unmap ((GstBuffer *) codec_data, &map);
memcpy (&t->ul, &sony_mpeg4_extradata, 16);
mxf_local_tag_insert (t, &MXF_METADATA_BASE (ret)->other_tags);
}
}
} else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
MXFMPEGEssenceType type = MXF_MPEG_ESSENCE_TYPE_VIDEO_AVC;
*mapping_data = g_new0 (MXFMPEGEssenceType, 1);
memcpy (*mapping_data, &type, sizeof (MXFMPEGEssenceType));
ret->parent.parent.picture_essence_coding.u[7] = 0x0a;
ret->parent.parent.picture_essence_coding.u[13] = 0x30;
ret->parent.parent.parent.essence_container.u[7] = 0x0a;
ret->parent.parent.parent.essence_container.u[13] = 0x10;
ret->parent.parent.parent.essence_container.u[14] = 0x60;
} else {
g_assert_not_reached ();
}
if (!mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->parent.
parent, caps)) {
g_object_unref (ret);
return NULL;
}
*handler = mxf_mpeg_video_write_func;
return (MXFMetadataFileDescriptor *) ret;
}
static void
mxf_mpeg_video_update_descriptor (MXFMetadataFileDescriptor * d, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf)
{
return;
}
static void
mxf_mpeg_video_get_edit_rate (MXFMetadataFileDescriptor * a, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf, MXFMetadataSourcePackage * package,
MXFMetadataTimelineTrack * track, MXFFraction * edit_rate)
{
(*edit_rate).n = a->sample_rate.n;
(*edit_rate).d = a->sample_rate.d;
}
static guint32
mxf_mpeg_video_get_track_number_template (MXFMetadataFileDescriptor * a,
GstCaps * caps, gpointer mapping_data)
{
return (0x15 << 24) | (0x05 << 8);
}
static MXFEssenceElementWriter mxf_mpeg_video_essence_element_writer = {
mxf_mpeg_video_get_descriptor,
mxf_mpeg_video_update_descriptor,
mxf_mpeg_video_get_edit_rate,
mxf_mpeg_video_get_track_number_template,
NULL,
{{0,}}
};
#define MPEG_VIDEO_CAPS \
"video/mpeg, " \
"mpegversion = (int) { 1, 2, 4 }, " \
"systemstream = (boolean) FALSE, " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE "; " \
"video/x-h264, " \
"stream-format = (string) byte-stream, " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
void
mxf_mpeg_init (void)
{
mxf_metadata_register (MXF_TYPE_METADATA_MPEG_VIDEO_DESCRIPTOR);
mxf_essence_element_handler_register (&mxf_mpeg_essence_element_handler);
mxf_mpeg_audio_essence_element_writer.pad_template =
gst_pad_template_new ("mpeg_audio_sink_%u", GST_PAD_SINK, GST_PAD_REQUEST,
gst_caps_from_string (MPEG_AUDIO_CAPS));
memcpy (&mxf_mpeg_audio_essence_element_writer.data_definition,
mxf_metadata_track_identifier_get (MXF_METADATA_TRACK_SOUND_ESSENCE), 16);
mxf_essence_element_writer_register (&mxf_mpeg_audio_essence_element_writer);
mxf_mpeg_video_essence_element_writer.pad_template =
gst_pad_template_new ("mpeg_video_sink_%u", GST_PAD_SINK, GST_PAD_REQUEST,
gst_caps_from_string (MPEG_VIDEO_CAPS));
memcpy (&mxf_mpeg_video_essence_element_writer.data_definition,
mxf_metadata_track_identifier_get (MXF_METADATA_TRACK_PICTURE_ESSENCE),
16);
mxf_essence_element_writer_register (&mxf_mpeg_video_essence_element_writer);
}
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