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avfilter/af_rubberband: add process_command()

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-09-30 21:40:54 +02:00
parent 562ba4a827
commit 1d7d824494
1 changed files with 33 additions and 0 deletions
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33
libavfilter/af_rubberband.c
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@ -207,6 +207,38 @@ static int request_frame(AVFilterLink *outlink)
return ret;
}
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
RubberBandContext *s = ctx->priv;
if (!strcmp(cmd, "tempo")) {
double arg;
sscanf(args, "%lf", &arg);
if (arg < 0.01 || arg > 100) {
av_log(ctx, AV_LOG_ERROR,
"Tempo scale factor '%f' out of range\n", arg);
return AVERROR(EINVAL);
}
rubberband_set_time_ratio(s->rbs, 1. / arg);
}
if (!strcmp(cmd, "pitch")) {
double arg;
sscanf(args, "%lf", &arg);
if (arg < 0.01 || arg > 100) {
av_log(ctx, AV_LOG_ERROR,
"Pitch scale factor '%f' out of range\n", arg);
return AVERROR(EINVAL);
}
rubberband_set_pitch_scale(s->rbs, arg);
}
return 0;
}
static const AVFilterPad rubberband_inputs[] = {
{
.name = "default",
@ -235,4 +267,5 @@ AVFilter ff_af_rubberband = {
.uninit = uninit,
.inputs = rubberband_inputs,
.outputs = rubberband_outputs,
.process_command = process_command,
};