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avconv: factor out flushing the filters

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This also ensures this is always done, avoiding infinite loops if an
error occurs at the end of the input.
This commit is contained in:
Anton Khirnov 2015-05-06 13:51:43 +02:00
parent e49e0f58e2
commit b114f6d48a
1 changed files with 22 additions and 12 deletions
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34
avconv.c
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@ -1161,13 +1161,8 @@ static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
decoded_frame = ist->decoded_frame;
ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
if (!*got_output || ret < 0) {
if (!pkt->size) {
for (i = 0; i < ist->nb_filters; i++)
av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
}
if (!*got_output || ret < 0)
return ret;
}
ist->samples_decoded += decoded_frame->nb_samples;
ist->frames_decoded++;
@ -1257,13 +1252,8 @@ static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
ret = avcodec_decode_video2(ist->dec_ctx,
decoded_frame, got_output, pkt);
if (!*got_output || ret < 0) {
if (!pkt->size) {
for (i = 0; i < ist->nb_filters; i++)
av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
}
if (!*got_output || ret < 0)
return ret;
}
ist->frames_decoded++;
@ -1356,6 +1346,17 @@ static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
return ret;
}
static int send_filter_eof(InputStream *ist)
{
int i, ret;
for (i = 0; i < ist->nb_filters; i++) {
ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
if (ret < 0)
return ret;
}
return 0;
}
/* pkt = NULL means EOF (needed to flush decoder buffers) */
static int process_input_packet(InputStream *ist, const AVPacket *pkt)
{
@ -1429,6 +1430,15 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt)
}
}
/* after flushing, send an EOF on all the filter inputs attached to the stream */
if (!pkt && ist->decoding_needed) {
int ret = send_filter_eof(ist);
if (ret < 0) {
av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
exit_program(1);
}
}
/* handle stream copy */
if (!ist->decoding_needed) {
ist->last_dts = ist->next_dts;