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avconv: split subtitle transcoding out of output_packet().

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This commit is contained in:
Anton Khirnov 2011-11-21 14:39:22 +01:00
parent 45d4b66f6f
commit 9595234c94
1 changed files with 34 additions and 25 deletions
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59
avconv.c
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@ -1811,16 +1811,41 @@ fail:
return ret;
}
static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
{
AVSubtitle subtitle;
int i, ret = avcodec_decode_subtitle2(ist->st->codec,
&subtitle, got_output, pkt);
if (ret < 0)
return ret;
if (!*got_output)
return 0;
pkt->size = 0;
rate_emu_sleep(ist);
for (i = 0; i < nb_output_streams; i++) {
OutputStream *ost = &output_streams[i];
if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
continue;
do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
}
avsubtitle_free(&subtitle);
return 0;
}
/* pkt = NULL means EOF (needed to flush decoder buffers) */
static int output_packet(InputStream *ist, int ist_index,
OutputStream *ost_table, int nb_ostreams,
const AVPacket *pkt)
{
AVFormatContext *os;
OutputStream *ost;
int ret = 0, i;
int got_output;
AVSubtitle subtitle, *subtitle_to_free;
int64_t pkt_pts = AV_NOPTS_VALUE;
AVPacket avpkt;
@ -1867,22 +1892,17 @@ static int output_packet(InputStream *ist, int ist_index,
if (!got_output)
goto discard_packet;
continue;
} else if (ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
ret = transcode_subtitles(ist, &avpkt, &got_output);
if (ret < 0)
return ret;
if (!got_output)
goto discard_packet;
continue;
}
/* decode the packet if needed */
subtitle_to_free = NULL;
switch(ist->st->codec->codec_type) {
case AVMEDIA_TYPE_SUBTITLE:
ret = avcodec_decode_subtitle2(ist->st->codec,
&subtitle, &got_output, &avpkt);
if (ret < 0)
return ret;
if (!got_output) {
goto discard_packet;
}
subtitle_to_free = &subtitle;
avpkt.size = 0;
break;
default:
return -1;
}
@ -1898,27 +1918,16 @@ static int output_packet(InputStream *ist, int ist_index,
if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
continue;
os = output_files[ost->file_index].ctx;
/* set the input output pts pairs */
//ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
av_assert0(ist->decoding_needed);
switch(ost->st->codec->codec_type) {
case AVMEDIA_TYPE_SUBTITLE:
do_subtitle_out(os, ost, ist, &subtitle,
pkt->pts);
break;
default:
abort();
}
}
/* XXX: allocate the subtitles in the codec ? */
if (subtitle_to_free) {
avsubtitle_free(subtitle_to_free);
subtitle_to_free = NULL;
}
if (ret < 0)
return ret;
}