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Ok-ed parts from patch by zhentan feng.

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Originally committed as revision 14839 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Zhentan Feng 2008-08-19 12:36:17 +00:00 committed by Carl Eugen Hoyos
parent 6f18fe8ce7
commit 2c8d438893
1 changed files with 71 additions and 2 deletions
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73
libavformat/mxfenc.c
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@ -38,6 +38,16 @@ typedef struct {
UID uid;
} MXFLocalTagPair;
typedef struct {
UID track_essence_element_key;
} MXFStreamContext;
typedef struct MXFContext {
int64_t header_byte_count;
int64_t header_byte_count_offset;
int64_t header_footer_partition_offset;
int essence_container_count;
} MXFContext;
static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,0x00,0x13,0x00,0x00,0x00 };
@ -56,6 +66,11 @@ static void mxf_write_uuid(ByteIOContext *pb, enum CodecID type, int value)
put_be16(pb, value);
}
static void mxf_write_umid(ByteIOContext *pb, enum CodecID type, int value)
{
put_buffer(pb, umid_base, 16);
mxf_write_uuid(pb, type, value);
}
static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
{
// Determine the best BER size
@ -114,9 +129,14 @@ static void mxf_write_local_tag(ByteIOContext *pb, int value_size, int tag)
put_be16(pb, value_size);
}
static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
{
put_buffer(pb, header_metadata_key, 13);
put_be24(pb, value);
}
static void mxf_free(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
AVStream *st;
int i;
@ -124,7 +144,6 @@ static void mxf_free(AVFormatContext *s)
st = s->streams[i];
av_freep(&st->priv_data);
}
av_freep(&mxf->essence_container_uls);
}
static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
@ -152,6 +171,56 @@ static int mux_write_packet(AVFormatContext *s, AVPacket *pkt)
return 0;
}
static int mxf_write_header_metadata_sets(AVFormatContext *s)
{
AVStream *st;
MXFStreamContext *sc = NULL;
int i;
if (mxf_write_preface(s) < 0)
return -1;
if (mxf_write_identification(s) < 0)
return -1;
if (mxf_write_content_storage(s) < 0)
return -1;
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i];
sc = av_mallocz(sizeof(MXFStreamContext));
if (!sc)
return AVERROR(ENOMEM);
st->priv_data = sc;
// set pts information
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
av_set_pts_info(st, 64, 1, st->codec->time_base.den);
} else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
}
}
if (mxf_build_structural_metadata(s, MaterialPackage) < 0)
return -1;
if (mxf_build_structural_metadata(s, SourcePackage) < 0)
return -1;
return 0;
}
static int mxf_update_header_partition(AVFormatContext *s, int64_t footer_partition_offset)
{
MXFContext *mxf = s->priv_data;
ByteIOContext *pb = s->pb;
url_fseek(pb, mxf->header_byte_count_offset, SEEK_SET);
put_be64(pb, mxf->header_byte_count);
put_flush_packet(pb);
url_fseek(pb, mxf->header_footer_partition_offset, SEEK_SET);
put_be64(pb, footer_partition_offset);
put_flush_packet(pb);
return 0;
}
AVOutputFormat mxf_muxer = {
"mxf",
NULL_IF_CONFIG_SMALL("Material eXchange Format"),