static int process_frame(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
ThresholdContext *s = fs->opaque;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out, *in, *threshold, *min, *max;
int ret;
if ((ret = ff_framesync_get_frame(&s->fs, 0, &in, 0)) < 0 ||
(ret = ff_framesync_get_frame(&s->fs, 1, &threshold, 0)) < 0 ||
(ret = ff_framesync_get_frame(&s->fs, 2, &min, 0)) < 0 ||
(ret = ff_framesync_get_frame(&s->fs, 3, &max, 0)) < 0)
return ret;
if (ctx->is_disabled) {
out = av_frame_clone(in);
if (!out)
return AVERROR(ENOMEM);
} else {
int p;
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out)
return AVERROR(ENOMEM);
av_frame_copy_props(out, in);
for (p = 0; p < s->nb_planes; p++) {
if (!(s->planes & (1 << p))) {
av_image_copy_plane(out->data[p], out->linesize[p],
in->data[p], in->linesize[p],
s->width[p] * s->bpc,
s->height[p]);
continue;
}
s->threshold(in->data[p], threshold->data[p],
min->data[p], max->data[p],
out->data[p],
in->linesize[p], threshold->linesize[p],
min->linesize[p], max->linesize[p],
out->linesize[p],
s->width[p], s->height[p]);
}
}
out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
return ff_filter_frame(outlink, out);
}
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ThresholdContext *s = ctx->priv;
ThreadData *td = arg;
AVFrame *min = td->min;
AVFrame *max = td->max;
AVFrame *threshold = td->threshold;
AVFrame *in = td->in;
AVFrame *out = td->out;
for (int p = 0; p < s->nb_planes; p++) {
const int h = s->height[p];
const int slice_start = (h * jobnr) / nb_jobs;
const int slice_end = (h * (jobnr+1)) / nb_jobs;
if (!(s->planes & (1 << p))) {
av_image_copy_plane(out->data[p] + slice_start * out->linesize[p],
out->linesize[p],
in->data[p] + slice_start * in->linesize[p],
in->linesize[p],
s->width[p] * s->bpc,
slice_end - slice_start);
continue;
}
s->threshold(in->data[p] + slice_start * in->linesize[p],
threshold->data[p] + slice_start * threshold->linesize[p],
min->data[p] + slice_start * min->linesize[p],
max->data[p] + slice_start * max->linesize[p],
out->data[p] + slice_start * out->linesize[p],
in->linesize[p], threshold->linesize[p],
min->linesize[p], max->linesize[p],
out->linesize[p],
s->width[p], slice_end - slice_start);
}
return 0;
}
