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store index in table in MXFStreamContext, simplify 

Originally committed as revision 15110 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2008-08-31 04:13:44 +00:00
parent f2ebd15952
commit d4ffc57d39
1 changed files with 21 additions and 23 deletions
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44
libavformat/mxfenc.c
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@ -40,10 +40,9 @@ typedef struct {
typedef struct {
UID track_essence_element_key;
const UID *essence_container_ul;
int index; //<<< index in mxf_essence_container_uls table
const UID *codec_ul;
int64_t duration;
void (*write_desc)();
} MXFStreamContext;
typedef struct {
@ -203,16 +202,16 @@ static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
}
/*
* Get essence container ul and return its index position
* Get essence container ul index
*/
static const UID *mxf_get_essence_container_ul(enum CodecID type, int *index)
static int mxf_get_essence_container_ul_index(enum CodecID id)
{
for (*index = 0; *index < sizeof(mxf_essence_container_uls)/
sizeof(*mxf_essence_container_uls); (*index)++)
if (mxf_essence_container_uls[*index].id == type)
return &mxf_essence_container_uls[*index].container_ul;
*index = -1;
return NULL;
int i;
for (i = 0; i < sizeof(mxf_essence_container_uls)/
sizeof(*mxf_essence_container_uls); i++)
if (mxf_essence_container_uls[i].id == id)
return i;
return -1;
}
static void mxf_write_primer_pack(AVFormatContext *s)
@ -595,7 +594,7 @@ static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID ke
put_be32(pb, st->time_base.num);
mxf_write_local_tag(pb, 16, 0x3004);
put_buffer(pb, *sc->essence_container_ul, 16);
put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
mxf_write_local_tag(pb, 16, 0x3201);
put_buffer(pb, *sc->codec_ul, 16);
@ -655,7 +654,7 @@ static void mxf_build_structural_metadata(AVFormatContext *s, enum MXFMetadataSe
if (type == SourcePackage) {
MXFStreamContext *sc = st->priv_data;
sc->write_desc(s, st);
mxf_essence_container_uls[sc->index].write_desc(s, st);
}
}
}
@ -759,7 +758,7 @@ static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
static int mxf_write_header(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
int i, index;
int i;
uint8_t present[sizeof(mxf_essence_container_uls)/
sizeof(*mxf_essence_container_uls)] = {0};
@ -776,8 +775,8 @@ static int mxf_write_header(AVFormatContext *s)
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
sc->duration = -1;
sc->essence_container_ul = mxf_get_essence_container_ul(st->codec->codec_id, &index);
if (!sc->essence_container_ul) {
sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
if (sc->index == -1) {
av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
"codec not currently supported in container\n", i);
return -1;
@ -796,17 +795,16 @@ static int mxf_write_header(AVFormatContext *s)
return -1;
}
} else
sc->codec_ul = &mxf_essence_container_uls[index].codec_ul;
sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
if (!present[index]) {
mxf->essence_containers_indices[mxf->essence_container_count++] = index;
present[index] = 1;
if (!present[sc->index]) {
mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
present[sc->index] = 1;
} else
present[index]++;
memcpy(sc->track_essence_element_key, mxf_essence_container_uls[index].element_ul, 15);
sc->track_essence_element_key[15] = present[index];
present[sc->index]++;
memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
sc->track_essence_element_key[15] = present[sc->index];
PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
sc->write_desc = mxf_essence_container_uls[index].write_desc;
}
mxf_write_partition(s, 1, header_open_partition_key, 1);