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avfilter/af_sidechaincompress: kill init function

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Should make addition of process_command easier.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-12-03 10:05:21 +01:00
parent 1b22bdf4e3
commit 4a43e559e1
1 changed files with 7 additions and 16 deletions
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23
libavfilter/af_sidechaincompress.c
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@ -86,20 +86,6 @@ static const AVOption options[] = {
#define sidechaincompress_options options
AVFILTER_DEFINE_CLASS(sidechaincompress);
static av_cold int init(AVFilterContext *ctx)
{
SidechainCompressContext *s = ctx->priv;
s->thres = log(s->threshold);
s->lin_knee_start = s->threshold / sqrt(s->knee);
s->adj_knee_start = s->lin_knee_start * s->lin_knee_start;
s->knee_start = log(s->lin_knee_start);
s->knee_stop = log(s->threshold * sqrt(s->knee));
s->compressed_knee_stop = (s->knee_stop - s->thres) / s->ratio + s->thres;
return 0;
}
// A fake infinity value (because real infinity may break some hosts)
#define FAKE_INFINITY (65536.0 * 65536.0)
@ -138,6 +124,13 @@ static int compressor_config_output(AVFilterLink *outlink)
AVFilterContext *ctx = outlink->src;
SidechainCompressContext *s = ctx->priv;
s->thres = log(s->threshold);
s->lin_knee_start = s->threshold / sqrt(s->knee);
s->adj_knee_start = s->lin_knee_start * s->lin_knee_start;
s->knee_start = log(s->lin_knee_start);
s->knee_stop = log(s->threshold * sqrt(s->knee));
s->compressed_knee_stop = (s->knee_stop - s->thres) / s->ratio + s->thres;
s->attack_coeff = FFMIN(1., 1. / (s->attack * outlink->sample_rate / 4000.));
s->release_coeff = FFMIN(1., 1. / (s->release * outlink->sample_rate / 4000.));
@ -333,7 +326,6 @@ AVFilter ff_af_sidechaincompress = {
.description = NULL_IF_CONFIG_SMALL("Sidechain compressor."),
.priv_size = sizeof(SidechainCompressContext),
.priv_class = &sidechaincompress_class,
.init = init,
.query_formats = query_formats,
.inputs = sidechaincompress_inputs,
.outputs = sidechaincompress_outputs,
@ -427,7 +419,6 @@ AVFilter ff_af_acompressor = {
.description = NULL_IF_CONFIG_SMALL("Audio compressor."),
.priv_size = sizeof(SidechainCompressContext),
.priv_class = &acompressor_class,
.init = init,
.query_formats = acompressor_query_formats,
.inputs = acompressor_inputs,
.outputs = acompressor_outputs,