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avfilter/af_acrusher: add commands support

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This commit is contained in:
Paul B Mahol 2021-01-30 23:39:55 +01:00
parent 633e344d96
commit 54de7dc372
2 changed files with 21 additions and 2 deletions
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4
doc/filters.texi
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@ -640,6 +640,10 @@ Set LFO range.
Set LFO rate. Set LFO rate.
@end table @end table
@subsection Commands
This filter supports the all above options as @ref{commands}.
@section acue @section acue
Delay audio filtering until a given wallclock timestamp. See the @ref{cue} Delay audio filtering until a given wallclock timestamp. See the @ref{cue}

19
libavfilter/af_acrusher.c
View File

@ -68,7 +68,7 @@ typedef struct ACrusherContext {
} ACrusherContext; } ACrusherContext;
#define OFFSET(x) offsetof(ACrusherContext, x) #define OFFSET(x) offsetof(ACrusherContext, 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 acrusher_options[] = { static const AVOption acrusher_options[] = {
{ "level_in", "set level in", OFFSET(level_in), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.015625, 64, A }, { "level_in", "set level in", OFFSET(level_in), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.015625, 64, A },
@ -325,13 +325,27 @@ static int config_input(AVFilterLink *inlink)
s->lfo.srate = inlink->sample_rate; s->lfo.srate = inlink->sample_rate;
s->lfo.amount = .5; s->lfo.amount = .5;
s->sr = av_calloc(inlink->channels, sizeof(*s->sr)); if (!s->sr)
s->sr = av_calloc(inlink->channels, sizeof(*s->sr));
if (!s->sr) if (!s->sr)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
return 0; return 0;
} }
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
AVFilterLink *inlink = ctx->inputs[0];
int ret;
ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
if (ret < 0)
return ret;
return config_input(inlink);
}
static const AVFilterPad avfilter_af_acrusher_inputs[] = { static const AVFilterPad avfilter_af_acrusher_inputs[] = {
{ {
.name = "default", .name = "default",
@ -359,4 +373,5 @@ AVFilter ff_af_acrusher = {
.query_formats = query_formats, .query_formats = query_formats,
.inputs = avfilter_af_acrusher_inputs, .inputs = avfilter_af_acrusher_inputs,
.outputs = avfilter_af_acrusher_outputs, .outputs = avfilter_af_acrusher_outputs,
.process_command = process_command,
}; };