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ffmpeg.wasm-core
Commit 2c2e69b3 authored by Paul B Mahol's avatar Paul B Mahol
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lavfi/blend: support slice threading 

Signed-off-by: 's avatarPaul B Mahol <onemda@gmail.com>
parent e0f2e0fc
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Showing with 53 additions and 26 deletions
libavfilter/vf_blend.c
View file @ 2c2e69b3
......@@ -65,16 +65,24 @@ enum { VAR_X, VAR_Y, VAR_W, VAR_H, VAR_SW, VAR
typedef struct FilterParams {
enum BlendMode mode;
double values[VAR_VARS_NB];
double opacity;
AVExpr *e;
char *expr_str;
void (*blend)(const uint8_t *top, int top_linesize,
const uint8_t *bottom, int bottom_linesize,
uint8_t *dst, int dst_linesize,
int width, int height, struct FilterParams *param);
int width, int start, int end,
struct FilterParams *param, double *values);
} FilterParams;
typedef struct ThreadData {
AVFrame *top, *bottom, *dst;
AVFilterLink *inlink;
int plane;
int w, h;
FilterParams *param;
} ThreadData;
typedef struct {
const AVClass *class;
struct FFBufQueue queue_top;
......@@ -140,21 +148,23 @@ AVFILTER_DEFINE_CLASS(blend);
static void blend_normal(const uint8_t *top, int top_linesize,
const uint8_t *bottom, int bottom_linesize,
uint8_t *dst, int dst_linesize,
int width, int height, FilterParams *param)
int width, int start, int end,
FilterParams *param, double *values)
{
av_image_copy_plane(dst, dst_linesize, top, top_linesize, width, height);
av_image_copy_plane(dst, dst_linesize, top, top_linesize, width, end - start);
}
#define DEFINE_BLEND(name, expr) \
static void blend_## name(const uint8_t *top, int top_linesize, \
const uint8_t *bottom, int bottom_linesize, \
uint8_t *dst, int dst_linesize, \
int width, int height, FilterParams *param) \
int width, int start, int end, \
FilterParams *param, double *values) \
{ \
double opacity = param->opacity; \
int i, j; \
\
for (i = 0; i < height; i++) { \
for (i = start; i < end; i++) { \
for (j = 0; j < width; j++) { \
dst[j] = top[j] + ((expr) - top[j]) * opacity; \
} \
......@@ -199,14 +209,13 @@ DEFINE_BLEND(vividlight, (B < 128) ? BURN(A, 2 * B) : DODGE(A, 2 * (B - 128)))
static void blend_expr(const uint8_t *top, int top_linesize,
const uint8_t *bottom, int bottom_linesize,
uint8_t *dst, int dst_linesize,
int width, int height,
FilterParams *param)
int width, int start, int end,
FilterParams *param, double *values)
{
AVExpr *e = param->e;
double *values = param->values;
int y, x;
for (y = 0; y < height; y++) {
for (y = start; y < end; y++) {
values[VAR_Y] = y;
for (x = 0; x < width; x++) {
values[VAR_X] = x;
......@@ -359,6 +368,33 @@ static int request_frame(AVFilterLink *outlink)
return 0;
}
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ThreadData *td = arg;
int slice_start = (td->h * jobnr ) / nb_jobs;
int slice_end = (td->h * (jobnr+1)) / nb_jobs;
const uint8_t *top = td->top->data[td->plane];
const uint8_t *bottom = td->bottom->data[td->plane];
uint8_t *dst = td->dst->data[td->plane];
double values[VAR_VARS_NB];
values[VAR_N] = td->inlink->frame_count;
values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
values[VAR_W] = td->w;
values[VAR_H] = td->h;
values[VAR_SW] = td->w / (double)td->dst->width;
values[VAR_SH] = td->h / (double)td->dst->height;
td->param->blend(top + slice_start * td->top->linesize[td->plane],
td->top->linesize[td->plane],
bottom + slice_start * td->bottom->linesize[td->plane],
td->bottom->linesize[td->plane],
dst + slice_start * td->dst->linesize[td->plane],
td->dst->linesize[td->plane],
td->w, slice_start, slice_end, td->param, &values[0]);
return 0;
}
static void blend_frame(AVFilterContext *ctx,
AVFrame *top_buf,
AVFrame *bottom_buf,
......@@ -366,7 +402,6 @@ static void blend_frame(AVFilterContext *ctx,
{
BlendContext *b = ctx->priv;
AVFilterLink *inlink = ctx->inputs[0];
FilterParams *param;
int plane;
for (plane = 0; plane < b->nb_planes; plane++) {
......@@ -374,20 +409,12 @@ static void blend_frame(AVFilterContext *ctx,
int vsub = plane == 1 || plane == 2 ? b->vsub : 0;
int outw = FF_CEIL_RSHIFT(dst_buf->width, hsub);
int outh = FF_CEIL_RSHIFT(dst_buf->height, vsub);
uint8_t *dst = dst_buf->data[plane];
uint8_t *top = top_buf->data[plane];
uint8_t *bottom = bottom_buf->data[plane];
param = &b->params[plane];
param->values[VAR_N] = inlink->frame_count;
param->values[VAR_T] = dst_buf->pts == AV_NOPTS_VALUE ? NAN : dst_buf->pts * av_q2d(inlink->time_base);
param->values[VAR_W] = outw;
param->values[VAR_H] = outh;
param->values[VAR_SW] = outw / (double)dst_buf->width;
param->values[VAR_SH] = outh / (double)dst_buf->height;
param->blend(top, top_buf->linesize[plane],
bottom, bottom_buf->linesize[plane],
dst, dst_buf->linesize[plane], outw, outh, param);
FilterParams *param = &b->params[plane];
ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
.w = outw, .h = outh, .param = param, .plane = plane,
.inlink = inlink };
ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ctx->graph->nb_threads));
}
}
......@@ -465,5 +492,5 @@ AVFilter avfilter_vf_blend = {
.inputs = blend_inputs,
.outputs = blend_outputs,
.priv_class = &blend_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
};
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