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gstreamer/gst/mxf/mxfmpeg.c
Thibault Saunier 20669d461a Fix 'ignoring return value of function declared with const attribute' 
This always happens with GstByteReader/Writer and friends when
not taking into account returned boolean of the _read/_write functions
(which is actually wrong).

Make use of the *_unchecked variant as much as possible, or take the
returned value into account.
2012-03-10 19:22:07 -03:00

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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., 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 <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 */
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;
}
/* See ISO/IEC 13818-2 for MPEG ES format */
gboolean
mxf_mpeg_is_mpeg2_keyframe (GstBuffer * buffer)
{
GstByteReader reader = GST_BYTE_READER_INIT_FROM_BUFFER (buffer);
guint32 tmp;
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) {
return TRUE;
} 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) {
return TRUE;
} else {
return FALSE;
}
}
} else if (gst_byte_reader_skip (&reader, 1) == FALSE)
break;
}
return FALSE;
}
static gboolean
mxf_mpeg_is_mpeg4_keyframe (GstBuffer * buffer)
{
GstByteReader reader = GST_BYTE_READER_INIT_FROM_BUFFER (buffer);
guint32 tmp;
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) {
return TRUE;
} else {
return FALSE;
}
}
} else if (gst_byte_reader_skip (&reader, 1) == FALSE)
break;
}
return FALSE;
}
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 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, 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,
MXFEssenceElementHandleFunc * handler, gpointer * mapping_data,
MXFMetadataGenericPictureEssenceDescriptor * p,
MXFMetadataGenericSoundEssenceDescriptor * s)
{
GstCaps *caps = NULL;
const gchar *codec_name = NULL;
MXFMPEGEssenceType t, *mdata;
*mapping_data = g_malloc (sizeof (MXFMPEGEssenceType));
mdata = (MXFMPEGEssenceType *) * mapping_data;
/* 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";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
} 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";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG2;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
} 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));
} 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";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_MPEG4;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
} else if ((p->picture_essence_coding.u[13] >> 4) == 0x03) {
/* RP 2008 */
/* TODO: What about codec_data for AVC1 streams? */
caps = gst_caps_new_simple ("video/x-h264", NULL);
codec_name = "h.264 Video";
t = MXF_MPEG_ESSENCE_TYPE_VIDEO_AVC;
memcpy (mdata, &t, sizeof (MXFMPEGEssenceType));
} 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/x-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";
} 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;
}
}
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);
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 GstCaps *
mxf_mpeg_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
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, 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);
} else if (f->essence_container.u[13] == 0x0f) {
GST_DEBUG ("Found h264 NAL unit stream");
/* RP 2008 */
/* TODO: What about codec_data? */
caps = gst_caps_new_simple ("video/x-h264", NULL);
if (!*tags)
*tags = gst_tag_list_new ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"h.264 Video", NULL);
} 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", NULL);
if (!*tags)
*tags = gst_tag_list_new ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"h.264 Video", NULL);
}
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_create_caps
};
typedef struct
{
guint spf;
guint rate;
} MPEGAudioMappingData;
static GstFlowReturn
mxf_mpeg_audio_write_func (GstBuffer * buffer, GstCaps * caps,
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, 0x04, 0x01, 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 *)
gst_mini_object_new (MXF_TYPE_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR);
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);
gst_mini_object_unref (GST_MINI_OBJECT_CAST (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)
memcpy (&ret->sound_essence_compression,
&sound_essence_compression_mpeg1_layer12, 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 || mpegversion == 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");
gst_mini_object_unref (GST_MINI_OBJECT_CAST (ret));
return NULL;
}
md->rate = rate;
memcpy (&ret->parent.essence_container, &mpeg_essence_container_ul, 16);
if (!mxf_metadata_generic_sound_essence_descriptor_from_caps (ret, caps)) {
gst_mini_object_unref (GST_MINI_OBJECT_CAST (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 = GST_BYTE_READER_INIT_FROM_BUFFER (buffer);
guint32 tmp;
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) {
return TRUE;
}
} else {
if (gst_byte_reader_skip (&reader, 1) == FALSE)
break;
}
}
return FALSE;
}
static gboolean
mxf_mpeg_is_mpeg4_frame (GstBuffer * buffer)
{
GstByteReader reader = GST_BYTE_READER_INIT_FROM_BUFFER (buffer);
guint32 tmp;
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) {
return TRUE;
}
} else {
if (gst_byte_reader_skip (&reader, 1) == FALSE)
break;
}
}
return FALSE;
}
static GstFlowReturn
mxf_mpeg_video_write_func (GstBuffer * buffer, GstCaps * caps,
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;
if (buffer)
ret = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) + av);
else
ret = gst_buffer_new_and_alloc (av);
if (av) {
GstBuffer *tmp = gst_adapter_take_buffer (adapter, av);
memcpy (GST_BUFFER_DATA (ret), GST_BUFFER_DATA (tmp), av);
gst_buffer_unref (tmp);
}
if (buffer) {
memcpy (GST_BUFFER_DATA (ret) + av, GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer));
gst_buffer_unref (buffer);
}
*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;
if (buffer)
ret = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) + av);
else
ret = gst_buffer_new_and_alloc (av);
if (av) {
GstBuffer *tmp = gst_adapter_take_buffer (adapter, av);
memcpy (GST_BUFFER_DATA (ret), GST_BUFFER_DATA (tmp), av);
gst_buffer_unref (tmp);
}
if (buffer) {
memcpy (GST_BUFFER_DATA (ret) + av, GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer));
gst_buffer_unref (buffer);
}
*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 *)
gst_mini_object_new (MXF_TYPE_METADATA_MPEG_VIDEO_DESCRIPTOR);
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);
gst_mini_object_unref (GST_MINI_OBJECT_CAST (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[13] = 0x10;
} 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[13] = 0x01;
} 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[13] = 0x20;
if ((v = gst_structure_get_value (s, "codec_data"))) {
MXFLocalTag *t = g_slice_new0 (MXFLocalTag);
codec_data = gst_value_get_buffer (v);
t->size = GST_BUFFER_SIZE (codec_data);
t->data = g_memdup (GST_BUFFER_DATA (codec_data), t->size);
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[13] = 0x30;
} else {
g_assert_not_reached ();
}
if (!mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->
parent.parent, caps)) {
gst_mini_object_unref (GST_MINI_OBJECT_CAST (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, " \
"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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