[FFmpeg-cvslog] avconv: Handle audio sync for non-S16 sample formats.
Alex Converse
git at videolan.org
Wed Nov 30 02:40:23 CET 2011
ffmpeg | branch: master | Alex Converse <alex.converse at gmail.com> | Mon Nov 28 15:19:39 2011 -0800| [fdab793a464c475ddb77e6cf7ae47a895bcf35fd] | committer: Alex Converse
avconv: Handle audio sync for non-S16 sample formats.
Also fix reporting of the number of samples added/dropped.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fdab793a464c475ddb77e6cf7ae47a895bcf35fd
---
avconv.c | 31 ++++++++++++++++---------------
1 files changed, 16 insertions(+), 15 deletions(-)
diff --git a/avconv.c b/avconv.c
index 6f64bc8..4c5498a 100644
--- a/avconv.c
+++ b/avconv.c
@@ -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;
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