typedef struct {
int max_step[4]; ///< max pixel step for each plane, expressed as a number of bytes
- int hsub, vsub; ///< chroma subsampling
+ int planewidth[4]; ///< width of each plane
+ int planeheight[4]; ///< height of each plane
} FlipContext;
static int query_formats(AVFilterContext *ctx)
{
FlipContext *s = inlink->dst->priv;
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
+ const int hsub = pix_desc->log2_chroma_w;
+ const int vsub = pix_desc->log2_chroma_h;
av_image_fill_max_pixsteps(s->max_step, NULL, pix_desc);
- s->hsub = pix_desc->log2_chroma_w;
- s->vsub = pix_desc->log2_chroma_h;
+ s->planewidth[0] = s->planewidth[3] = inlink->w;
+ s->planewidth[1] = s->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, hsub);
+ s->planeheight[0] = s->planeheight[3] = inlink->h;
+ s->planeheight[1] = s->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, vsub);
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;
+ FlipContext *s = ctx->priv;
+ 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 = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(inlink->w, s->hsub) : inlink->w;
- const int height = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(inlink->h, s->vsub) : inlink->h;
+ 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++)
}
}
+ 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);
}
.query_formats = query_formats,
.inputs = avfilter_vf_hflip_inputs,
.outputs = avfilter_vf_hflip_outputs,
+ .flags = AVFILTER_FLAG_SLICE_THREADS,
};