mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-05 07:56:35 +00:00
1422 lines
44 KiB
C
1422 lines
44 KiB
C
/* 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_memdup2 (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);
|
|
|
|
}
|