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Move writing Xiph-style sizes to its own function 

Originally committed as revision 10338 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2007-09-05 00:24:06 +00:00
parent 4b8f58eea5
commit 86be66378b
1 changed files with 10 additions and 4 deletions
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14
libavformat/matroskaenc.c
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@ -178,6 +178,14 @@ static void end_ebml_master(ByteIOContext *pb, offset_t start)
url_fseek(pb, pos, SEEK_SET);
}
static void put_xiph_size(ByteIOContext *pb, int size)
{
int i;
for (i = 0; i < size / 255; i++)
put_byte(pb, 255);
put_byte(pb, size % 255);
}
// initializes a mkv_seekhead element to be ready to index level 1 matroska elements
// if numelements is greater than 0, it reserves enough space for that many elements
// at the current file position and writes the seekhead there, otherwise the seekhead
@ -331,7 +339,7 @@ static int put_xiph_codecpriv(ByteIOContext *pb, AVCodecContext *codec)
uint8_t *header_start[3];
int header_len[3];
int first_header_size;
int j, k;
int j;
if (codec->codec_id == CODEC_ID_VORBIS)
first_header_size = 30;
@ -347,9 +355,7 @@ static int put_xiph_codecpriv(ByteIOContext *pb, AVCodecContext *codec)
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] % 255);
put_xiph_size(pb, header_len[j]);
}
for (j = 0; j < 3; j++)
put_buffer(pb, header_start[j], header_len[j]);