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Code Issues Releases Activity

avconv: Handle audio sync for non-S16 sample formats.

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Also fix reporting of the number of samples added/dropped.
This commit is contained in:
Alex Converse 2011-11-28 15:19:39 -08:00
parent 39a7a5b8ab
commit fdab793a46
1 changed files with 16 additions and 15 deletions
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31
avconv.c
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@ -729,6 +729,14 @@ static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx
}
}
static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
{
int fill_char = 0x00;
if (sample_fmt == AV_SAMPLE_FMT_U8)
fill_char = 0x80;
memset(buf, fill_char, size);
}
static void do_audio_out(AVFormatContext *s,
OutputStream *ost,
InputStream *ist,
@ -829,9 +837,9 @@ need_realloc:
if(audio_sync_method){
double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
- av_fifo_size(ost->fifo)/(enc->channels * 2);
double idelta= delta*dec->sample_rate / enc->sample_rate;
int byte_delta= ((int)idelta)*2*dec->channels;
- av_fifo_size(ost->fifo)/(enc->channels * osize);
int idelta = delta * dec->sample_rate / enc->sample_rate;
int byte_delta = idelta * isize * dec->channels;
//FIXME resample delay
if(fabs(delta) > 50){
@ -840,7 +848,8 @@ need_realloc:
byte_delta= FFMAX(byte_delta, -size);
size += byte_delta;
buf -= byte_delta;
av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
-byte_delta / (isize * dec->channels));
if(!size)
return;
ist->is_start=0;
@ -854,11 +863,11 @@ need_realloc:
}
ist->is_start=0;
memset(input_tmp, 0, byte_delta);
generate_silence(input_tmp, dec->sample_fmt, byte_delta);
memcpy(input_tmp + byte_delta, buf, size);
buf= input_tmp;
size += byte_delta;
av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
}
}else if(audio_sync_method>1){
int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
@ -871,7 +880,7 @@ need_realloc:
}
}else
ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
- av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
- av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
if (ost->audio_resample) {
buftmp = audio_buf;
@ -1436,14 +1445,6 @@ static void print_report(OutputFile *output_files,
}
}
static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
{
int fill_char = 0x00;
if (sample_fmt == AV_SAMPLE_FMT_U8)
fill_char = 0x80;
memset(buf, fill_char, size);
}
static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
{
int i, ret;