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avfilter/af_rubberband: make use of initial input timestamp

This commit is contained in:
Paul B Mahol 2019-04-29 21:11:46 +02:00
parent 093a504414
commit 12a284fa63
1 changed files with 6 additions and 1 deletions
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7
libavfilter/af_rubberband.c
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@ -37,6 +37,7 @@ typedef struct RubberBandContext {
smoothing, formant, opitch, channels;
int64_t nb_samples_out;
int64_t nb_samples_in;
int64_t first_pts;
int nb_samples;
} RubberBandContext;
@ -124,6 +125,9 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
AVFrame *out;
int ret = 0, nb_samples;
if (s->first_pts == AV_NOPTS_VALUE)
s->first_pts = in->pts;
rubberband_process(s->rbs, (const float *const *)in->data, in->nb_samples, ff_outlink_get_status(inlink));
s->nb_samples_in += in->nb_samples;
@ -134,7 +138,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
av_frame_free(&in);
return AVERROR(ENOMEM);
}
out->pts = av_rescale_q(s->nb_samples_out,
out->pts = s->first_pts + av_rescale_q(s->nb_samples_out,
(AVRational){ 1, outlink->sample_rate },
outlink->time_base);
nb_samples = rubberband_retrieve(s->rbs, (float *const *)out->data, nb_samples);
@ -162,6 +166,7 @@ static int config_input(AVFilterLink *inlink)
return AVERROR(ENOMEM);
s->nb_samples = rubberband_get_samples_required(s->rbs);
s->first_pts = AV_NOPTS_VALUE;
return 0;
}