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avfilter/af_aresample: Calculate output buffer size more precisely.

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Fixes accumulation of data in case of significant silence injections

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-11-06 22:59:16 +01:00
parent 3e6b7bbce5
commit ea6331b2c6
1 changed files with 9 additions and 2 deletions
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11
libavfilter/af_aresample.c
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@ -170,11 +170,18 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamplesref)
{
AResampleContext *aresample = inlink->dst->priv;
const int n_in = insamplesref->nb_samples;
int n_out = n_in * aresample->ratio * 2 + 256;
int64_t delay;
int n_out = n_in * aresample->ratio + 32;
AVFilterLink *const outlink = inlink->dst->outputs[0];
AVFrame *outsamplesref = ff_get_audio_buffer(outlink, n_out);
AVFrame *outsamplesref;
int ret;
delay = swr_get_delay(aresample->swr, outlink->sample_rate);
if (delay > 0)
n_out += delay;
outsamplesref = ff_get_audio_buffer(outlink, n_out);
if(!outsamplesref)
return AVERROR(ENOMEM);