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Code Issues Releases Activity

avfilter/vf_convolve: implement slice threading

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2017-12-25 11:53:54 +01:00
parent f9f1b2a927
commit c59e49f9b2
1 changed files with 100 additions and 42 deletions
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142
libavfilter/vf_convolve.c
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@ -29,12 +29,14 @@
#include "internal.h"
#include "video.h"
#define MAX_THREADS 16
typedef struct ConvolveContext {
const AVClass *class;
FFFrameSync fs;
FFTContext *fft[4];
FFTContext *ifft[4];
FFTContext *fft[4][MAX_THREADS];
FFTContext *ifft[4][MAX_THREADS];
int fft_bits[4];
int fft_len[4];
@ -152,15 +154,28 @@ static int config_input_impulse(AVFilterLink *inlink)
return 0;
}
static void fft_horizontal(ConvolveContext *s, FFTComplex *fft_hdata,
int n, int plane)
typedef struct ThreadData {
FFTComplex *hdata, *vdata;
int plane, n;
} ThreadData;
static int fft_horizontal(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ConvolveContext *s = ctx->priv;
ThreadData *td = arg;
FFTComplex *hdata = td->hdata;
const int plane = td->plane;
const int n = td->n;
int start = (n * jobnr ) / nb_jobs;
int end = (n * (jobnr+1)) / nb_jobs;
int y;
for (y = 0; y < n; y++) {
av_fft_permute(s->fft[plane], fft_hdata + y * n);
av_fft_calc(s->fft[plane], fft_hdata + y * n);
for (y = start; y < end; y++) {
av_fft_permute(s->fft[plane][jobnr], hdata + y * n);
av_fft_calc(s->fft[plane][jobnr], hdata + y * n);
}
return 0;
}
static void get_input(ConvolveContext *s, FFTComplex *fft_hdata,
@ -238,46 +253,73 @@ static void get_input(ConvolveContext *s, FFTComplex *fft_hdata,
}
}
static void fft_vertical(ConvolveContext *s, FFTComplex *fft_hdata, FFTComplex *fft_vdata,
int n, int plane)
static int fft_vertical(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ConvolveContext *s = ctx->priv;
ThreadData *td = arg;
FFTComplex *hdata = td->hdata;
FFTComplex *vdata = td->vdata;
const int plane = td->plane;
const int n = td->n;
int start = (n * jobnr ) / nb_jobs;
int end = (n * (jobnr+1)) / nb_jobs;
int y, x;
for (y = 0; y < n; y++) {
for (y = start; y < end; y++) {
for (x = 0; x < n; x++) {
fft_vdata[y * n + x].re = fft_hdata[x * n + y].re;
fft_vdata[y * n + x].im = fft_hdata[x * n + y].im;
vdata[y * n + x].re = hdata[x * n + y].re;
vdata[y * n + x].im = hdata[x * n + y].im;
}
av_fft_permute(s->fft[plane], fft_vdata + y * n);
av_fft_calc(s->fft[plane], fft_vdata + y * n);
av_fft_permute(s->fft[plane][jobnr], vdata + y * n);
av_fft_calc(s->fft[plane][jobnr], vdata + y * n);
}
return 0;
}
static void ifft_vertical(ConvolveContext *s, int n, int plane)
static int ifft_vertical(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ConvolveContext *s = ctx->priv;
ThreadData *td = arg;
FFTComplex *hdata = td->hdata;
FFTComplex *vdata = td->vdata;
const int plane = td->plane;
const int n = td->n;
int start = (n * jobnr ) / nb_jobs;
int end = (n * (jobnr+1)) / nb_jobs;
int y, x;
for (y = 0; y < n; y++) {
av_fft_permute(s->ifft[plane], s->fft_vdata[plane] + y * n);
av_fft_calc(s->ifft[plane], s->fft_vdata[plane] + y * n);
for (y = start; y < end; y++) {
av_fft_permute(s->ifft[plane][jobnr], vdata + y * n);
av_fft_calc(s->ifft[plane][jobnr], vdata + y * n);
for (x = 0; x < n; x++) {
s->fft_hdata[plane][x * n + y].re = s->fft_vdata[plane][y * n + x].re;
s->fft_hdata[plane][x * n + y].im = s->fft_vdata[plane][y * n + x].im;
hdata[x * n + y].re = vdata[y * n + x].re;
hdata[x * n + y].im = vdata[y * n + x].im;
}
}
return 0;
}
static void ifft_horizontal(ConvolveContext *s, int n, int plane)
static int ifft_horizontal(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
FFTComplex *input = s->fft_hdata[plane];
ConvolveContext *s = ctx->priv;
ThreadData *td = arg;
FFTComplex *hdata = td->hdata;
const int plane = td->plane;
const int n = td->n;
int start = (n * jobnr ) / nb_jobs;
int end = (n * (jobnr+1)) / nb_jobs;
int y;
for (y = 0; y < n; y++) {
av_fft_permute(s->ifft[plane], input + y * n);
av_fft_calc(s->ifft[plane], input + y * n);
for (y = start; y < end; y++) {
av_fft_permute(s->ifft[plane][jobnr], hdata + y * n);
av_fft_calc(s->ifft[plane][jobnr], hdata + y * n);
}
return 0;
}
static void get_output(ConvolveContext *s, AVFrame *out,
@ -356,15 +398,20 @@ static int do_convolve(FFFrameSync *fs)
const int w = s->planewidth[plane];
const int h = s->planeheight[plane];
float total = 0;
ThreadData td;
if (!(s->planes & (1 << plane))) {
continue;
}
td.plane = plane, td.n = n;
get_input(s, s->fft_hdata[plane], mainpic, w, h, n, plane, 1.f);
fft_horizontal(s, s->fft_hdata[plane], n, plane);
fft_vertical(s, s->fft_hdata[plane], s->fft_vdata[plane],
n, plane);
td.hdata = s->fft_hdata[plane];
td.vdata = s->fft_vdata[plane];
ctx->internal->execute(ctx, fft_horizontal, &td, NULL, FFMIN3(MAX_THREADS, n, ff_filter_get_nb_threads(ctx)));
ctx->internal->execute(ctx, fft_vertical, &td, NULL, FFMIN3(MAX_THREADS, n, ff_filter_get_nb_threads(ctx)));
if ((!s->impulse && !s->got_impulse[plane]) || s->impulse) {
if (s->depth == 8) {
@ -385,9 +432,12 @@ static int do_convolve(FFFrameSync *fs)
total = FFMAX(1, total);
get_input(s, s->fft_hdata_impulse[plane], impulsepic, w, h, n, plane, 1 / total);
fft_horizontal(s, s->fft_hdata_impulse[plane], n, plane);
fft_vertical(s, s->fft_hdata_impulse[plane], s->fft_vdata_impulse[plane],
n, plane);
td.hdata = s->fft_hdata_impulse[plane];
td.vdata = s->fft_vdata_impulse[plane];
ctx->internal->execute(ctx, fft_horizontal, &td, NULL, FFMIN3(MAX_THREADS, n, ff_filter_get_nb_threads(ctx)));
ctx->internal->execute(ctx, fft_vertical, &td, NULL, FFMIN3(MAX_THREADS, n, ff_filter_get_nb_threads(ctx)));
s->got_impulse[plane] = 1;
}
@ -408,8 +458,11 @@ static int do_convolve(FFFrameSync *fs)
}
}
ifft_vertical(s, n, plane);
ifft_horizontal(s, n, plane);
td.hdata = s->fft_hdata[plane];
td.vdata = s->fft_vdata[plane];
ctx->internal->execute(ctx, ifft_vertical, &td, NULL, FFMIN3(MAX_THREADS, n, ff_filter_get_nb_threads(ctx)));
ctx->internal->execute(ctx, ifft_horizontal, &td, NULL, FFMIN3(MAX_THREADS, n, ff_filter_get_nb_threads(ctx)));
get_output(s, mainpic, w, h, n, plane);
}
@ -421,7 +474,7 @@ static int config_output(AVFilterLink *outlink)
AVFilterContext *ctx = outlink->src;
ConvolveContext *s = ctx->priv;
AVFilterLink *mainlink = ctx->inputs[0];
int ret, i;
int ret, i, j;
s->fs.on_event = do_convolve;
ret = ff_framesync_init_dualinput(&s->fs, ctx);
@ -437,10 +490,12 @@ static int config_output(AVFilterLink *outlink)
return ret;
for (i = 0; i < s->nb_planes; i++) {
s->fft[i] = av_fft_init(s->fft_bits[i], 0);
s->ifft[i] = av_fft_init(s->fft_bits[i], 1);
if (!s->fft[i] || !s->ifft[i])
return AVERROR(ENOMEM);
for (j = 0; j < MAX_THREADS; j++) {
s->fft[i][j] = av_fft_init(s->fft_bits[i], 0);
s->ifft[i][j] = av_fft_init(s->fft_bits[i], 1);
if (!s->fft[i][j] || !s->ifft[i][j])
return AVERROR(ENOMEM);
}
}
return 0;
@ -455,15 +510,18 @@ static int activate(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)
{
ConvolveContext *s = ctx->priv;
int i;
int i, j;
for (i = 0; i < 4; i++) {
av_freep(&s->fft_hdata[i]);
av_freep(&s->fft_vdata[i]);
av_freep(&s->fft_hdata_impulse[i]);
av_freep(&s->fft_vdata_impulse[i]);
av_fft_end(s->fft[i]);
av_fft_end(s->ifft[i]);
for (j = 0; j < MAX_THREADS; j++) {
av_fft_end(s->fft[i][j]);
av_fft_end(s->ifft[i][j]);
}
}
ff_framesync_uninit(&s->fs);
@ -502,5 +560,5 @@ AVFilter ff_vf_convolve = {
.priv_class = &convolve_class,
.inputs = convolve_inputs,
.outputs = convolve_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
};