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Code Issues Releases Activity

avfilter/vf_hflip: support slice threading

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-09-30 09:26:11 +00:00
parent 2a6a3d4317
commit 0a4aea6db9
1 changed files with 40 additions and 19 deletions
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57
libavfilter/vf_hflip.c
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@ -75,34 +75,30 @@ static int config_props(AVFilterLink *inlink)
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
typedef struct ThreadData {
AVFrame *in, *out;
} ThreadData;
static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
{
AVFilterContext *ctx = inlink->dst;
FlipContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out;
ThreadData *td = arg;
AVFrame *in = td->in;
AVFrame *out = td->out;
uint8_t *inrow, *outrow;
int i, j, plane, step;
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
av_frame_free(&in);
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, in);
/* copy palette if required */
if (av_pix_fmt_desc_get(inlink->format)->flags & AV_PIX_FMT_FLAG_PAL)
memcpy(out->data[1], in->data[1], AVPALETTE_SIZE);
for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
const int width = s->planewidth[plane];
const int height = s->planeheight[plane];
const int start = (height * job ) / nb_jobs;
const int end = (height * (job+1)) / nb_jobs;
step = s->max_step[plane];
outrow = out->data[plane];
inrow = in ->data[plane] + (width - 1) * step;
for (i = 0; i < height; i++) {
outrow = out->data[plane] + start * out->linesize[plane];
inrow = in ->data[plane] + start * in->linesize[plane] + (width - 1) * step;
for (i = start; i < end; i++) {
switch (step) {
case 1:
for (j = 0; j < width; j++)
@ -148,6 +144,30 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
}
}
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
ThreadData td;
AVFrame *out;
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
av_frame_free(&in);
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, in);
/* copy palette if required */
if (av_pix_fmt_desc_get(inlink->format)->flags & AV_PIX_FMT_FLAG_PAL)
memcpy(out->data[1], in->data[1], AVPALETTE_SIZE);
td.in = in, td.out = out;
ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ctx->graph->nb_threads));
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
@ -177,4 +197,5 @@ AVFilter avfilter_vf_hflip = {
.query_formats = query_formats,
.inputs = avfilter_vf_hflip_inputs,
.outputs = avfilter_vf_hflip_outputs,
.flags = AVFILTER_FLAG_SLICE_THREADS,
};