RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

avfilter/af_asupercut: add float sample format support

This commit is contained in:
Paul B Mahol 2020-11-29 21:33:52 +01:00
parent 7cf852b03c
commit 400b9ee731
1 changed files with 56 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

99
libavfilter/af_asupercut.c
View File

@ -40,6 +40,8 @@ typedef struct ASuperCutContext {
BiquadCoeffs coeffs[10];
AVFrame *w;
int (*filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} ASuperCutContext;
static int query_formats(AVFilterContext *ctx)
@ -47,6 +49,7 @@ static int query_formats(AVFilterContext *ctx)
AVFilterFormats *formats = NULL;
AVFilterChannelLayouts *layouts = NULL;
static const enum AVSampleFormat sample_fmts[] = {
AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_DBLP,
AV_SAMPLE_FMT_NONE
};
@ -118,11 +121,62 @@ static int get_coeffs(AVFilterContext *ctx)
return 0;
}
typedef struct ThreadData {
AVFrame *in, *out;
} ThreadData;
#define FILTER(name, type) \
static int filter_channels_## name(AVFilterContext *ctx, void *arg, \
int jobnr, int nb_jobs) \
{ \
ASuperCutContext *s = ctx->priv; \
ThreadData *td = arg; \
AVFrame *out = td->out; \
AVFrame *in = td->in; \
const int start = (in->channels * jobnr) / nb_jobs; \
const int end = (in->channels * (jobnr+1)) / nb_jobs; \
\
for (int ch = start; ch < end; ch++) { \
const type *src = (const type *)in->extended_data[ch]; \
type *dst = (type *)out->extended_data[ch]; \
\
for (int b = 0; b < s->filter_count; b++) { \
BiquadCoeffs *coeffs = &s->coeffs[b]; \
const type a1 = coeffs->a1; \
const type a2 = coeffs->a2; \
const type b0 = coeffs->b0; \
const type b1 = coeffs->b1; \
const type b2 = coeffs->b2; \
type *w = ((type *)s->w->extended_data[ch]) + b * 2; \
\
for (int n = 0; n < in->nb_samples; n++) { \
type sin = b ? dst[n] : src[n]; \
type sout = sin * b0 + w[0]; \
\
w[0] = b1 * sin + w[1] + a1 * sout; \
w[1] = b2 * sin + a2 * sout; \
\
dst[n] = sout; \
} \
} \
} \
\
return 0; \
}
FILTER(fltp, float)
FILTER(dblp, double)
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ASuperCutContext *s = ctx->priv;
switch (inlink->format) {
case AV_SAMPLE_FMT_FLTP: s->filter_channels = filter_channels_fltp; break;
case AV_SAMPLE_FMT_DBLP: s->filter_channels = filter_channels_dblp; break;
}
s->w = ff_get_audio_buffer(inlink, 2 * 10);
if (!s->w)
return AVERROR(ENOMEM);
@ -130,47 +184,6 @@ static int config_input(AVFilterLink *inlink)
return get_coeffs(ctx);
}
typedef struct ThreadData {
AVFrame *in, *out;
} ThreadData;
static int filter_channels(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ASuperCutContext *s = ctx->priv;
ThreadData *td = arg;
AVFrame *out = td->out;
AVFrame *in = td->in;
const int start = (in->channels * jobnr) / nb_jobs;
const int end = (in->channels * (jobnr+1)) / nb_jobs;
for (int ch = start; ch < end; ch++) {
const double *src = (const double *)in->extended_data[ch];
double *dst = (double *)out->extended_data[ch];
for (int b = 0; b < s->filter_count; b++) {
BiquadCoeffs *coeffs = &s->coeffs[b];
const double a1 = coeffs->a1;
const double a2 = coeffs->a2;
const double b0 = coeffs->b0;
const double b1 = coeffs->b1;
const double b2 = coeffs->b2;
double *w = ((double *)s->w->extended_data[ch]) + b * 2;
for (int n = 0; n < in->nb_samples; n++) {
double sin = b ? dst[n] : src[n];
double sout = sin * b0 + w[0];
w[0] = b1 * sin + w[1] + a1 * sout;
w[1] = b2 * sin + a2 * sout;
dst[n] = sout;
}
}
}
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
@ -194,8 +207,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
}
td.in = in; td.out = out;
ctx->internal->execute(ctx, filter_channels, &td, NULL, FFMIN(inlink->channels,
ff_filter_get_nb_threads(ctx)));
ctx->internal->execute(ctx, s->filter_channels, &td, NULL, FFMIN(inlink->channels,
ff_filter_get_nb_threads(ctx)));
if (out != in)
av_frame_free(&in);