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introduce MXFContainerEssencePair to associate essence element key and

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essence container easily and compute essence element key in write_header

Originally committed as revision 15080 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2008-08-31 01:33:28 +00:00
parent e51a81e0ff
commit b8ad3f7852
1 changed files with 35 additions and 29 deletions
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64
libavformat/mxfenc.c
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@ -43,13 +43,28 @@ typedef struct {
const UID *essence_container_ul;
} MXFStreamContext;
typedef struct {
UID container_ul;
UID element_ul;
enum CodecID id;
} MXFContainerEssencePair;
static const MXFContainerEssencePair mxf_essence_container_uls[] = {
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
{ 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, CODEC_ID_MPEG2VIDEO },
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
{ 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 }, CODEC_ID_PCM_S16LE },
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE },
};
typedef struct MXFContext {
int64_t header_byte_count;
int64_t header_byte_count_offset;
int64_t header_footer_partition_offset;
int essence_container_count;
uint8_t essence_containers_indices[sizeof(ff_mxf_essence_container_uls)/
sizeof(*ff_mxf_essence_container_uls)];
uint8_t essence_containers_indices[sizeof(mxf_essence_container_uls)/
sizeof(*mxf_essence_container_uls)];
} MXFContext;
typedef struct {
@ -189,11 +204,11 @@ static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
*/
static const UID *mxf_get_essence_container_ul(enum CodecID type, int *index)
{
const MXFCodecUL *uls = ff_mxf_essence_container_uls;
for (*index = 0; *index < sizeof(ff_mxf_essence_container_uls)/
sizeof(*ff_mxf_essence_container_uls); (*index)++)
if (ff_mxf_essence_container_uls[*index].id == type)
return &uls->uid;
const MXFContainerEssencePair *uls = mxf_essence_container_uls;
for (*index = 0; *index < sizeof(mxf_essence_container_uls)/
sizeof(*mxf_essence_container_uls); (*index)++)
if (mxf_essence_container_uls[*index].id == type)
return &uls->container_ul;
*index = -1;
return NULL;
}
@ -259,8 +274,8 @@ static void mxf_write_essence_container_refs(AVFormatContext *s)
mxf_write_refs_count(pb, c->essence_container_count);
av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
for (i = 0; i < c->essence_container_count; i++) {
put_buffer(pb, ff_mxf_essence_container_uls[c->essence_containers_indices[i]].uid, 16);
PRINT_KEY(s, "essence container ul:\n", ff_mxf_essence_container_uls[c->essence_containers_indices[i]].uid);
put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
}
}
@ -428,8 +443,6 @@ static void mxf_write_track(AVFormatContext *s, int stream_index, enum MXFMetada
ByteIOContext *pb = s->pb;
AVStream *st = s->streams[stream_index];
MXFStreamContext *sc = st->priv_data;
const MXFCodecUL *element;
int i = 0;
mxf_write_metadata_key(pb, 0x013b00);
PRINT_KEY(s, "track key", pb->buf_ptr - 16);
@ -444,23 +457,12 @@ static void mxf_write_track(AVFormatContext *s, int stream_index, enum MXFMetada
mxf_write_local_tag(pb, 4, 0x4801);
put_be32(pb, stream_index);
// write track number
mxf_write_local_tag(pb, 4, 0x4804);
if (type != MaterialPackage) {
for (element = mxf_essence_element_key; element->id != CODEC_ID_NONE; element++) {
if (st->codec->codec_id== element->id) {
// set essence_element key
memcpy(sc->track_essence_element_key, element->uid, 16);
sc->track_essence_element_key[15] += track_number_sign[i];
// write track number
put_buffer(pb, sc->track_essence_element_key + 12, 4);
track_number_sign[i]++;
break;
}
i++;
}
} else
if (type == MaterialPackage)
put_be32(pb, 0); // track number of material package is 0
else
put_buffer(pb, sc->track_essence_element_key + 12, 4);
mxf_write_local_tag(pb, 8, 0x4B01);
put_be32(pb, st->time_base.den);
@ -730,8 +732,8 @@ static int mux_write_header(AVFormatContext *s)
ByteIOContext *pb = s->pb;
int64_t header_metadata_start, offset_now;
int i, index;
uint8_t present[sizeof(ff_mxf_essence_container_uls)/
sizeof(*ff_mxf_essence_container_uls)] = {0};
uint8_t present[sizeof(mxf_essence_container_uls)/
sizeof(*mxf_essence_container_uls)] = {0};
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
@ -753,7 +755,11 @@ static int mux_write_header(AVFormatContext *s)
if (!present[index]) {
mxf->essence_containers_indices[mxf->essence_container_count++] = index;
present[index] = 1;
}
} else
present[index]++;
memcpy(sc->track_essence_element_key, mxf_essence_element_key[index].uid, 15);
sc->track_essence_element_key[15] = present[index];
PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
}
mxf_write_partition(s, 0, 1, header_partition_key);