[FFmpeg-cvslog] avfilter/af_acrusher: add commands support
Paul B Mahol
git at videolan.org
Sun Jan 31 00:54:14 EET 2021
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Jan 30 23:39:55 2021 +0100| [54de7dc372dc77cae0cb9b45987d365e5446399d] | committer: Paul B Mahol
avfilter/af_acrusher: add commands support
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=54de7dc372dc77cae0cb9b45987d365e5446399d
---
doc/filters.texi | 4 ++++
libavfilter/af_acrusher.c | 19 +++++++++++++++++--
2 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/doc/filters.texi b/doc/filters.texi
index 6782be3762..d2f62972dd 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -640,6 +640,10 @@ Set LFO range.
Set LFO rate.
@end table
+ at subsection Commands
+
+This filter supports the all above options as @ref{commands}.
+
@section acue
Delay audio filtering until a given wallclock timestamp. See the @ref{cue}
diff --git a/libavfilter/af_acrusher.c b/libavfilter/af_acrusher.c
index ddce74465d..d3c31c20bd 100644
--- a/libavfilter/af_acrusher.c
+++ b/libavfilter/af_acrusher.c
@@ -68,7 +68,7 @@ typedef struct ACrusherContext {
} ACrusherContext;
#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[] = {
{ "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.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)
return AVERROR(ENOMEM);
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[] = {
{
.name = "default",
@@ -359,4 +373,5 @@ AVFilter ff_af_acrusher = {
.query_formats = query_formats,
.inputs = avfilter_af_acrusher_inputs,
.outputs = avfilter_af_acrusher_outputs,
+ .process_command = process_command,
};
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