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Correctly write CodecPrivate element for Vorbis and Theora

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Originally committed as revision 10304 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2007-09-05 00:22:56 +00:00
parent 79a58e91db
commit 89e81bbbb9
1 changed files with 33 additions and 2 deletions
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35
libavformat/matroskaenc.c
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@ -21,6 +21,7 @@
#include "avformat.h"
#include "riff.h"
#include "xiph.h"
#include "matroska.h"
typedef struct MatroskaMuxContext {
@ -113,7 +114,7 @@ static int mkv_write_header(AVFormatContext *s)
MatroskaMuxContext *mkv = s->priv_data;
ByteIOContext *pb = &s->pb;
offset_t ebml_header, segment_info, tracks;
int i, j;
int i, j, k;
ebml_header = start_ebml_master(pb, EBML_ID_HEADER);
put_ebml_uint (pb, EBML_ID_EBMLVERSION , 1);
@ -167,7 +168,37 @@ static int mkv_write_header(AVFormatContext *s)
// XXX: CodecPrivate for vorbis, theora, aac, native mpeg4, ...
if (native_id) {
put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codec->extradata, codec->extradata_size);
offset_t codecprivate;
if (codec->codec_id == CODEC_ID_VORBIS || codec->codec_id == CODEC_ID_THEORA) {
uint8_t *header_start[3];
int header_len[3];
int first_header_size;
if (codec->codec_id == CODEC_ID_VORBIS)
first_header_size = 30;
else
first_header_size = 42;
if (ff_split_xiph_headers(codec->extradata, codec->extradata_size,
first_header_size, header_start, header_len) < 0) {
av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
return -1;
}
codecprivate = start_ebml_master(pb, MATROSKA_ID_CODECPRIVATE);
put_byte(pb, 2); // number packets - 1
for (j = 0; j < 2; j++) {
for (k = 0; k < header_len[j] / 255; k++)
put_byte(pb, 255);
put_byte(pb, header_len[j]);
}
for (j = 0; j < 3; j++)
put_buffer(pb, header_start[j], header_len[j]);
end_ebml_master(pb, codecprivate);
} else {
put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codec->extradata, codec->extradata_size);
}
}
switch (codec->codec_type) {