double range;
int link;
int detection;
+ int mode;
double thres;
double knee_start;
- double lin_knee_stop;
double knee_stop;
+ double lin_knee_start;
+ double lin_knee_stop;
double lin_slope;
double attack_coeff;
double release_coeff;
} AudioGateContext;
#define OFFSET(x) offsetof(AudioGateContext, x)
-#define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+#define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption options[] = {
{ "level_in", "set input level", OFFSET(level_in), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.015625, 64, A },
+ { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, A, "mode" },
+ { "downward",0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, A, "mode" },
+ { "upward", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, A, "mode" },
{ "range", "set max gain reduction", OFFSET(range), AV_OPT_TYPE_DOUBLE, {.dbl=0.06125}, 0, 1, A },
{ "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl=0.125}, 0, 1, A },
{ "ratio", "set ratio", OFFSET(ratio), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 1, 9000, A },
AudioGateContext *s = ctx->priv;
double lin_threshold = s->threshold;
double lin_knee_sqrt = sqrt(s->knee);
- double lin_knee_start;
if (s->detection)
lin_threshold *= lin_threshold;
s->attack_coeff = FFMIN(1., 1. / (s->attack * inlink->sample_rate / 4000.));
s->release_coeff = FFMIN(1., 1. / (s->release * inlink->sample_rate / 4000.));
s->lin_knee_stop = lin_threshold * lin_knee_sqrt;
- lin_knee_start = lin_threshold / lin_knee_sqrt;
+ s->lin_knee_start = lin_threshold / lin_knee_sqrt;
s->thres = log(lin_threshold);
- s->knee_start = log(lin_knee_start);
+ s->knee_start = log(s->lin_knee_start);
s->knee_stop = log(s->lin_knee_stop);
return 0;
static double output_gain(double lin_slope, double ratio, double thres,
double knee, double knee_start, double knee_stop,
- double lin_knee_stop, double range)
+ double range, int mode)
{
- if (lin_slope < lin_knee_stop) {
- double slope = log(lin_slope);
- double tratio = ratio;
- double gain = 0.;
- double delta = 0.;
-
- if (IS_FAKE_INFINITY(ratio))
- tratio = 1000.;
- gain = (slope - thres) * tratio + thres;
- delta = tratio;
-
- if (knee > 1. && slope > knee_start) {
+ double slope = log(lin_slope);
+ double tratio = ratio;
+ double gain = 0.;
+ double delta = 0.;
+
+ if (IS_FAKE_INFINITY(ratio))
+ tratio = 1000.;
+ gain = (slope - thres) * tratio + thres;
+ delta = tratio;
+
+ if (mode) {
+ if (knee > 1. && slope < knee_stop)
+ gain = hermite_interpolation(slope, knee_stop, knee_start, ((knee_stop - thres) * tratio + thres), knee_start, delta, 1.);
+ } else {
+ if (knee > 1. && slope > knee_start)
gain = hermite_interpolation(slope, knee_start, knee_stop, ((knee_start - thres) * tratio + thres), knee_stop, delta, 1.);
- }
- return FFMAX(range, exp(gain - slope));
}
-
- return 1.;
+ return FFMAX(range, exp(gain - slope));
}
static void gate(AudioGateContext *s,
for (n = 0; n < nb_samples; n++, src += inlink->channels, dst += inlink->channels, scsrc += sclink->channels) {
double abs_sample = fabs(scsrc[0] * level_sc), gain = 1.0;
+ int detected;
if (s->link == 1) {
for (c = 1; c < sclink->channels; c++)
abs_sample *= abs_sample;
s->lin_slope += (abs_sample - s->lin_slope) * (abs_sample > s->lin_slope ? attack_coeff : release_coeff);
- if (s->lin_slope > 0.0)
+
+ if (s->mode)
+ detected = s->lin_slope > s->lin_knee_start;
+ else
+ detected = s->lin_slope < s->lin_knee_stop;
+
+ if (s->lin_slope > 0.0 && detected)
gain = output_gain(s->lin_slope, s->ratio, s->thres,
s->knee, s->knee_start, s->knee_stop,
- s->lin_knee_stop, s->range);
+ s->range, s->mode);
for (c = 0; c < inlink->channels; c++)
dst[c] = src[c] * level_in * gain * makeup;
{ NULL }
};
-AVFilter ff_af_agate = {
+const AVFilter ff_af_agate = {
.name = "agate",
.description = NULL_IF_CONFIG_SMALL("Audio gate."),
.query_formats = query_formats,
.priv_class = &agate_class,
.inputs = inputs,
.outputs = outputs,
+ .process_command = ff_filter_process_command,
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};
#endif /* CONFIG_AGATE_FILTER */
dst = (double *)out->data[0];
out->pts = s->pts;
- s->pts += nb_samples;
+ s->pts += av_rescale_q(nb_samples, (AVRational){1, ctx->outputs[0]->sample_rate}, ctx->outputs[0]->time_base);
gate(s, (double *)in[0]->data[0], dst,
(double *)in[1]->data[0], nb_samples,
};
int ret, i;
- if (!ctx->inputs[0]->in_channel_layouts ||
- !ctx->inputs[0]->in_channel_layouts->nb_channel_layouts) {
+ if (!ctx->inputs[0]->incfg.channel_layouts ||
+ !ctx->inputs[0]->incfg.channel_layouts->nb_channel_layouts) {
av_log(ctx, AV_LOG_WARNING,
"No channel layout for input 1\n");
return AVERROR(EAGAIN);
}
- if ((ret = ff_add_channel_layout(&layouts, ctx->inputs[0]->in_channel_layouts->channel_layouts[0])) < 0 ||
- (ret = ff_channel_layouts_ref(layouts, &ctx->outputs[0]->in_channel_layouts)) < 0)
+ if ((ret = ff_add_channel_layout(&layouts, ctx->inputs[0]->incfg.channel_layouts->channel_layouts[0])) < 0 ||
+ (ret = ff_channel_layouts_ref(layouts, &ctx->outputs[0]->incfg.channel_layouts)) < 0)
return ret;
for (i = 0; i < 2; i++) {
layouts = ff_all_channel_counts();
- if ((ret = ff_channel_layouts_ref(layouts, &ctx->inputs[i]->out_channel_layouts)) < 0)
+ if ((ret = ff_channel_layouts_ref(layouts, &ctx->inputs[i]->outcfg.channel_layouts)) < 0)
return ret;
}
{ NULL }
};
-AVFilter ff_af_sidechaingate = {
+const AVFilter ff_af_sidechaingate = {
.name = "sidechaingate",
.description = NULL_IF_CONFIG_SMALL("Audio sidechain gate."),
.priv_size = sizeof(AudioGateContext),
.uninit = uninit,
.inputs = sidechaingate_inputs,
.outputs = sidechaingate_outputs,
+ .process_command = ff_filter_process_command,
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};
#endif /* CONFIG_SIDECHAINGATE_FILTER */
projects / ffmpeg / blobdiff