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Code Issues Releases Activity

avformat/assenc: mux all extradata at once

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Before this commit, the code was muxing up to the 2nd line after
"[Events]" (assuming it to be the "Format:" line). The remaining are
generally "Comment:" directives which can stay in that place. mkvextract
behaves that way so it seems there is no reason for that extra
complexity.
This commit is contained in:
Clément Bœsch 2014-09-20 18:39:58 +02:00
parent e60770679b
commit 08e2b0da2c
1 changed files with 4 additions and 22 deletions
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26
libavformat/assenc.c
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@ -30,7 +30,6 @@ typedef struct DialogueLine {
} DialogueLine;
typedef struct ASSContext{
unsigned int extra_index;
int write_ts; // 0: ssa (timing in payload), 1: ass (matroska like)
int expected_readorder;
DialogueLine *dialogue_cache;
@ -42,7 +41,6 @@ static int write_header(AVFormatContext *s)
{
ASSContext *ass = s->priv_data;
AVCodecContext *avctx= s->streams[0]->codec;
uint8_t *last= NULL;
if (s->nb_streams != 1 || (avctx->codec_id != AV_CODEC_ID_SSA &&
avctx->codec_id != AV_CODEC_ID_ASS)) {
@ -51,21 +49,11 @@ static int write_header(AVFormatContext *s)
}
ass->write_ts = avctx->codec_id == AV_CODEC_ID_ASS;
avpriv_set_pts_info(s->streams[0], 64, 1, 100);
while(ass->extra_index < avctx->extradata_size){
uint8_t *p = avctx->extradata + ass->extra_index;
uint8_t *end= strchr(p, '\n');
if(!end) end= avctx->extradata + avctx->extradata_size;
else end++;
avio_write(s->pb, p, end-p);
ass->extra_index += end-p;
if(last && !memcmp(last, "[Events]", 8))
break;
last=p;
if (avctx->extradata_size > 0) {
avio_write(s->pb, avctx->extradata, avctx->extradata_size);
if (avctx->extradata[avctx->extradata_size - 1] != '\n')
avio_write(s->pb, "\r\n", 2);
}
avio_flush(s->pb);
return 0;
@ -191,13 +179,7 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
static int write_trailer(AVFormatContext *s)
{
ASSContext *ass = s->priv_data;
AVCodecContext *avctx= s->streams[0]->codec;
purge_dialogues(s, 1);
avio_write(s->pb, avctx->extradata + ass->extra_index,
avctx->extradata_size - ass->extra_index);
return 0;
}