ret = ff_request_frame(ctx->inputs[0]);
if (ret == AVERROR_EOF && !s->flushed) {
- AVFrame *out = ff_get_audio_buffer(inlink, 1);
- int nb_samples;
+ if (rubberband_available(s->rbs) > 0) {
+ AVFrame *out = ff_get_audio_buffer(inlink, 1);
+ int nb_samples;
- if (!out)
- return AVERROR(ENOMEM);
-
- rubberband_process(s->rbs, (const float *const *)out->data, 1, 1);
- av_frame_free(&out);
- s->flushed = 1;
- nb_samples = rubberband_available(s->rbs);
-
- if (nb_samples > 0) {
- out = ff_get_audio_buffer(inlink, nb_samples);
if (!out)
return AVERROR(ENOMEM);
- out->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);
- out->nb_samples = nb_samples;
- ret = ff_filter_frame(outlink, out);
- s->nb_samples_out += nb_samples;
+
+ rubberband_process(s->rbs, (const float *const *)out->data, 1, 1);
+ av_frame_free(&out);
+ nb_samples = rubberband_available(s->rbs);
+
+ if (nb_samples > 0) {
+ out = ff_get_audio_buffer(inlink, nb_samples);
+ if (!out)
+ return AVERROR(ENOMEM);
+ out->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);
+ out->nb_samples = nb_samples;
+ ret = ff_filter_frame(outlink, out);
+ s->nb_samples_out += nb_samples;
+ }
}
+ s->flushed = 1;
av_log(ctx, AV_LOG_DEBUG, "nb_samples_in %"PRId64" nb_samples_out %"PRId64"\n",
s->nb_samples_in, s->nb_samples_out);
}
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",
.uninit = uninit,
.inputs = rubberband_inputs,
.outputs = rubberband_outputs,
+ .process_command = process_command,
};