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avconv: improve -re implementation 

Integrate the code in the packet reading function, instead of inserting
sleeps in many places.
This is simpler to follow and should work better.
This commit is contained in:
Anton Khirnov 2013-04-23 20:34:59 +02:00
parent e3b225a4fe
commit b4a5a29227
1 changed files with 11 additions and 17 deletions
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28
avconv.c
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@ -1037,16 +1037,6 @@ static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *p
ost->st->codec->frame_number++; ost->st->codec->frame_number++;
} }
static void rate_emu_sleep(InputStream *ist)
{
if (input_files[ist->file_index]->rate_emu) {
int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
int64_t now = av_gettime() - ist->start;
if (pts > now)
av_usleep(pts - now);
}
}
int guess_input_channel_layout(InputStream *ist) int guess_input_channel_layout(InputStream *ist)
{ {
AVCodecContext *dec = ist->st->codec; AVCodecContext *dec = ist->st->codec;
@ -1095,8 +1085,6 @@ static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
pkt->pts = AV_NOPTS_VALUE; pkt->pts = AV_NOPTS_VALUE;
} }
rate_emu_sleep(ist);
resample_changed = ist->resample_sample_fmt != decoded_frame->format || resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
ist->resample_channels != avctx->channels || ist->resample_channels != avctx->channels ||
ist->resample_channel_layout != decoded_frame->channel_layout || ist->resample_channel_layout != decoded_frame->channel_layout ||
@ -1190,8 +1178,6 @@ static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free); pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
#endif #endif
rate_emu_sleep(ist);
if (ist->st->sample_aspect_ratio.num) if (ist->st->sample_aspect_ratio.num)
decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio; decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
@ -1251,8 +1237,6 @@ static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
if (!*got_output) if (!*got_output)
return ret; return ret;
rate_emu_sleep(ist);
for (i = 0; i < nb_output_streams; i++) { for (i = 0; i < nb_output_streams; i++) {
OutputStream *ost = output_streams[i]; OutputStream *ost = output_streams[i];
@ -1340,7 +1324,6 @@ static int output_packet(InputStream *ist, const AVPacket *pkt)
/* handle stream copy */ /* handle stream copy */
if (!ist->decoding_needed) { if (!ist->decoding_needed) {
rate_emu_sleep(ist);
ist->last_dts = ist->next_dts; ist->last_dts = ist->next_dts;
switch (ist->st->codec->codec_type) { switch (ist->st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO: case AVMEDIA_TYPE_AUDIO:
@ -2047,6 +2030,17 @@ static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
static int get_input_packet(InputFile *f, AVPacket *pkt) static int get_input_packet(InputFile *f, AVPacket *pkt)
{ {
if (f->rate_emu) {
int i;
for (i = 0; i < f->nb_streams; i++) {
InputStream *ist = input_streams[f->ist_index + i];
int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
int64_t now = av_gettime() - ist->start;
if (pts > now)
return AVERROR(EAGAIN);
}
}
#if HAVE_PTHREADS #if HAVE_PTHREADS
if (nb_input_files > 1) if (nb_input_files > 1)
return get_input_packet_mt(f, pkt); return get_input_packet_mt(f, pkt);