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avfilter/af_aasrc: improve bypass support

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This commit is contained in:
Paul B Mahol 2024-10-13 11:39:57 +02:00
parent 35724c89dc
commit c491f4fd61
1 changed files with 36 additions and 6 deletions
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42
libavfilter/af_aasrc.c
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@ -29,6 +29,7 @@
typedef struct AASRCContext {
const AVClass *class;
int pass;
int sample_rate;
int channels;
double t_inc;
@ -128,8 +129,10 @@ static int config_input(AVFilterLink *inlink)
AASRCContext *s = ctx->priv;
int ret;
if (inlink->sample_rate == outlink->sample_rate)
if (inlink->sample_rate == outlink->sample_rate) {
s->pass = 1;
return 0;
}
outlink->time_base = (AVRational) {1, outlink->sample_rate};
s->channels = inlink->ch_layout.nb_channels;
@ -183,9 +186,6 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
AVFrame *out;
int ret;
if (inlink->sample_rate == outlink->sample_rate)
return ff_filter_frame(outlink, in);
nb_out_samples = lrint(ceil(in->nb_samples / s->t_inc));
out = ff_get_audio_buffer(outlink, nb_out_samples);
@ -216,6 +216,7 @@ static int activate(AVFilterContext *ctx)
{
AVFilterLink *outlink = ctx->outputs[0];
AVFilterLink *inlink = ctx->inputs[0];
AASRCContext *s = ctx->priv;
int ret, status;
AVFrame *in;
int64_t pts;
@ -226,7 +227,7 @@ static int activate(AVFilterContext *ctx)
if (ret < 0)
return ret;
if (ret > 0) {
if (inlink->sample_rate == outlink->sample_rate)
if (s->pass)
return ff_filter_frame(outlink, in);
else
return filter_frame(inlink, in);
@ -251,11 +252,40 @@ static av_cold void uninit(AVFilterContext *ctx)
s->aasrc_uninit(ctx);
}
static AVFrame *get_in_audio_buffer(AVFilterLink *inlink, int nb_samples)
{
AVFilterContext *ctx = inlink->dst;
const AASRCContext *s = ctx->priv;
return s->pass ?
ff_null_get_audio_buffer (inlink, nb_samples) :
ff_default_get_audio_buffer(inlink, nb_samples);
}
static const AVFilterPad inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_input,
.get_buffer.audio = get_in_audio_buffer,
},
};
static AVFrame *get_out_audio_buffer(AVFilterLink *outlink, int nb_samples)
{
AVFilterContext *ctx = outlink->src;
const AASRCContext *s = ctx->priv;
return s->pass ?
ff_null_get_audio_buffer (outlink, nb_samples) :
ff_default_get_audio_buffer(outlink, nb_samples);
}
static const AVFilterPad outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.get_buffer.audio = get_out_audio_buffer,
},
};
@ -267,7 +297,7 @@ const AVFilter ff_af_aasrc = {
.activate = activate,
.uninit = uninit,
FILTER_INPUTS(inputs),
FILTER_OUTPUTS(ff_audio_default_filterpad),
FILTER_OUTPUTS(outputs),
FILTER_QUERY_FUNC2(query_formats),
.flags = AVFILTER_FLAG_SLICE_THREADS,
};