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avfilter/af_asubboost: add timeline and slice threading support

This commit is contained in:
Paul B Mahol 2020-11-24 10:00:34 +01:00
parent 052a5993ad
commit ee8ecc2730
1 changed files with 59 additions and 33 deletions
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92
libavfilter/af_asubboost.c
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@ -37,7 +37,7 @@ typedef struct ASubBoostContext {
double a0, a1, a2;
double b0, b1, b2;
int write_pos;
int *write_pos;
int buffer_samples;
AVFrame *w;
@ -105,24 +105,67 @@ static int config_input(AVFilterLink *inlink)
s->buffer = ff_get_audio_buffer(inlink, inlink->sample_rate / 10);
s->w = ff_get_audio_buffer(inlink, 2);
if (!s->buffer || !s->w)
s->write_pos = av_calloc(inlink->channels, sizeof(*s->write_pos));
if (!s->buffer || !s->w || !s->write_pos)
return AVERROR(ENOMEM);
return get_coeffs(ctx);
}
typedef struct ThreadData {
AVFrame *in, *out;
} ThreadData;
static int filter_channels(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ASubBoostContext *s = ctx->priv;
ThreadData *td = arg;
AVFrame *out = td->out;
AVFrame *in = td->in;
const double wet = ctx->is_disabled ? 0. : s->wet_gain;
const double dry = ctx->is_disabled ? 1. : s->dry_gain;
const double feedback = s->feedback, decay = s->decay;
const double b0 = s->b0;
const double b1 = s->b1;
const double b2 = s->b2;
const double a1 = -s->a1;
const double a2 = -s->a2;
const int start = (in->channels * jobnr) / nb_jobs;
const int end = (in->channels * (jobnr+1)) / nb_jobs;
const int buffer_samples = s->buffer_samples;
for (int ch = start; ch < end; ch++) {
const double *src = (const double *)in->extended_data[ch];
double *dst = (double *)out->extended_data[ch];
double *buffer = (double *)s->buffer->extended_data[ch];
double *w = (double *)s->w->extended_data[ch];
int write_pos = s->write_pos[ch];
for (int n = 0; n < in->nb_samples; n++) {
double out_sample;
out_sample = src[n] * b0 + w[0];
w[0] = b1 * src[n] + w[1] + a1 * out_sample;
w[1] = b2 * src[n] + a2 * out_sample;
buffer[write_pos] = buffer[write_pos] * decay + out_sample * feedback;
dst[n] = src[n] * dry + buffer[write_pos] * wet;
if (++write_pos >= buffer_samples)
write_pos = 0;
}
s->write_pos[ch] = write_pos;
}
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
ASubBoostContext *s = ctx->priv;
const double wet = s->wet_gain, dry = s->dry_gain, feedback = s->feedback, decay = s->decay;
const double b0 = s->b0;
const double b1 = s->b1;
const double b2 = s->b2;
const double a1 = -s->a1;
const double a2 = -s->a2;
int write_pos;
ThreadData td;
AVFrame *out;
if (av_frame_is_writable(in)) {
@ -136,29 +179,9 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
av_frame_copy_props(out, in);
}
for (int ch = 0; ch < in->channels; ch++) {
const double *src = (const double *)in->extended_data[ch];
double *dst = (double *)out->extended_data[ch];
double *buffer = (double *)s->buffer->extended_data[ch];
double *w = (double *)s->w->extended_data[ch];
write_pos = s->write_pos;
for (int n = 0; n < in->nb_samples; n++) {
double out_sample;
out_sample = src[n] * b0 + w[0];
w[0] = b1 * src[n] + w[1] + a1 * out_sample;
w[1] = b2 * src[n] + a2 * out_sample;
buffer[write_pos] = buffer[write_pos] * decay + out_sample * feedback;
dst[n] = src[n] * dry + buffer[write_pos] * wet;
if (++write_pos >= s->buffer_samples)
write_pos = 0;
}
}
s->write_pos = write_pos;
td.in = in; td.out = out;
ctx->internal->execute(ctx, filter_channels, &td, NULL, FFMIN(inlink->channels,
ff_filter_get_nb_threads(ctx)));
if (out != in)
av_frame_free(&in);
@ -171,6 +194,7 @@ static av_cold void uninit(AVFilterContext *ctx)
av_frame_free(&s->buffer);
av_frame_free(&s->w);
av_freep(&s->write_pos);
}
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
@ -229,4 +253,6 @@ AVFilter ff_af_asubboost = {
.inputs = inputs,
.outputs = outputs,
.process_command = process_command,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
AVFILTER_FLAG_SLICE_THREADS,
};