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vf_fade: support slice threading

This commit is contained in:
Anton Khirnov 2013-05-11 21:40:28 +02:00
parent cb79881b49
commit 8a994b7406
1 changed files with 56 additions and 24 deletions
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80
libavfilter/vf_fade.c
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@ -92,39 +92,70 @@ static int config_props(AVFilterLink *inlink)
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
static int filter_slice_luma(AVFilterContext *ctx, void *arg, int jobnr,
int nb_jobs)
{
FadeContext *s = inlink->dst->priv;
uint8_t *p;
FadeContext *s = ctx->priv;
AVFrame *frame = arg;
int slice_h = frame->height / nb_jobs;
int slice_start = jobnr * slice_h;
int slice_end = (jobnr == nb_jobs - 1) ? frame->height : (jobnr + 1) * slice_h;
int i, j;
for (i = slice_start; i < slice_end; i++) {
uint8_t *p = frame->data[0] + i * frame->linesize[0];
for (j = 0; j < frame->width * s->bpp; j++) {
/* s->factor is using 16 lower-order bits for decimal
* places. 32768 = 1 << 15, it is an integer representation
* of 0.5 and is for rounding. */
*p = (*p * s->factor + 32768) >> 16;
p++;
}
}
return 0;
}
static int filter_slice_chroma(AVFilterContext *ctx, void *arg, int jobnr,
int nb_jobs)
{
FadeContext *s = ctx->priv;
AVFrame *frame = arg;
int slice_h = FFALIGN(frame->height / nb_jobs, 1 << s->vsub);
int slice_start = jobnr * slice_h;
int slice_end = (jobnr == nb_jobs - 1) ? frame->height : (jobnr + 1) * slice_h;
int i, j, plane;
if (s->factor < UINT16_MAX) {
/* luma or rgb plane */
for (i = 0; i < frame->height; i++) {
p = frame->data[0] + i * frame->linesize[0];
for (j = 0; j < inlink->w * s->bpp; j++) {
/* s->factor is using 16 lower-order bits for decimal
* places. 32768 = 1 << 15, it is an integer representation
* of 0.5 and is for rounding. */
*p = (*p * s->factor + 32768) >> 16;
for (plane = 1; plane < 3; plane++) {
for (i = slice_start; i < slice_end; i++) {
uint8_t *p = frame->data[plane] + (i >> s->vsub) * frame->linesize[plane];
for (j = 0; j < frame->width >> s->hsub; j++) {
/* 8421367 = ((128 << 1) + 1) << 15. It is an integer
* representation of 128.5. The .5 is for rounding
* purposes. */
*p = ((*p - 128) * s->factor + 8421367) >> 16;
p++;
}
}
}
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
FadeContext *s = ctx->priv;
if (s->factor < UINT16_MAX) {
/* luma or rgb plane */
ctx->internal->execute(ctx, filter_slice_luma, frame, NULL,
FFMIN(frame->height, ctx->graph->nb_threads));
if (frame->data[1] && frame->data[2]) {
/* chroma planes */
for (plane = 1; plane < 3; plane++) {
for (i = 0; i < frame->height; i++) {
p = frame->data[plane] + (i >> s->vsub) * frame->linesize[plane];
for (j = 0; j < inlink->w >> s->hsub; j++) {
/* 8421367 = ((128 << 1) + 1) << 15. It is an integer
* representation of 128.5. The .5 is for rounding
* purposes. */
*p = ((*p - 128) * s->factor + 8421367) >> 16;
p++;
}
}
}
ctx->internal->execute(ctx, filter_slice_chroma, frame, NULL,
FFMIN(frame->height, ctx->graph->nb_threads));
}
}
@ -187,4 +218,5 @@ AVFilter avfilter_vf_fade = {
.inputs = avfilter_vf_fade_inputs,
.outputs = avfilter_vf_fade_outputs,
.flags = AVFILTER_FLAG_SLICE_THREADS,
};