static void draw_slice(AVFilterLink *inlink, int y0, int h0, int slice_dir)
{
AVFilterContext *ctx = inlink->dst;
BoxBlurContext *boxblur = ctx->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFilterBufferRef *inpicref = inlink ->cur_buf;
AVFilterBufferRef *outpicref = outlink->out_buf;
int plane;
int cw = inlink->w >> boxblur->hsub, ch = h0 >> boxblur->vsub;
int w[4] = { inlink->w, cw, cw, inlink->w };
int h[4] = { h0, ch, ch, h0 };
for (plane = 0; inpicref->data[plane] && plane < 4; plane++)
hblur(outpicref->data[plane], outpicref->linesize[plane],
inpicref ->data[plane], inpicref ->linesize[plane],
w[plane], h[plane], boxblur->radius[plane], boxblur->power[plane],
boxblur->temp);
for (plane = 0; inpicref->data[plane] && plane < 4; plane++)
vblur(outpicref->data[plane], outpicref->linesize[plane],
outpicref->data[plane], outpicref->linesize[plane],
w[plane], h[plane], boxblur->radius[plane], boxblur->power[plane],
boxblur->temp);
avfilter_draw_slice(outlink, y0, h0, slice_dir);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
BoxBlurContext *boxblur = ctx->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFrame *out;
int plane;
int cw = inlink->w >> boxblur->hsub, ch = in->height >> boxblur->vsub;
int w[4] = { inlink->w, cw, cw, inlink->w };
int h[4] = { in->height, ch, ch, in->height };
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);
for (plane = 0; in->data[plane] && plane < 4; plane++)
hblur(out->data[plane], out->linesize[plane],
in ->data[plane], in ->linesize[plane],
w[plane], h[plane], boxblur->radius[plane], boxblur->power[plane],
boxblur->temp);
for (plane = 0; in->data[plane] && plane < 4; plane++)
vblur(out->data[plane], out->linesize[plane],
out->data[plane], out->linesize[plane],
w[plane], h[plane], boxblur->radius[plane], boxblur->power[plane],
boxblur->temp);
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static int end_frame(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
BoxBlurContext *boxblur = ctx->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFilterBufferRef *inpicref = inlink ->cur_buf;
AVFilterBufferRef *outpicref = outlink->out_buf;
int plane;
int cw = inlink->w >> boxblur->hsub, ch = inlink->h >> boxblur->vsub;
int w[4] = { inlink->w, cw, cw, inlink->w };
int h[4] = { inlink->h, ch, ch, inlink->h };
for (plane = 0; inpicref->data[plane] && plane < 4; plane++)
hblur(outpicref->data[plane], outpicref->linesize[plane],
inpicref ->data[plane], inpicref ->linesize[plane],
w[plane], h[plane], boxblur->radius[plane], boxblur->power[plane],
boxblur->temp);
for (plane = 0; inpicref->data[plane] && plane < 4; plane++)
vblur(outpicref->data[plane], outpicref->linesize[plane],
outpicref->data[plane], outpicref->linesize[plane],
w[plane], h[plane], boxblur->radius[plane], boxblur->power[plane],
boxblur->temp);
ff_draw_slice(outlink, 0, inlink->h, 1);
return avfilter_default_end_frame(inlink);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
BoxBlurContext *s = ctx->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFrame *out;
int plane;
int cw = AV_CEIL_RSHIFT(inlink->w, s->hsub), ch = AV_CEIL_RSHIFT(in->height, s->vsub);
int w[4] = { inlink->w, cw, cw, inlink->w };
int h[4] = { in->height, ch, ch, in->height };
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
const int depth = desc->comp[0].depth;
const int pixsize = (depth+7)/8;
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);
for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++)
hblur(out->data[plane], out->linesize[plane],
in ->data[plane], in ->linesize[plane],
w[plane], h[plane], s->radius[plane], s->power[plane],
s->temp, pixsize);
for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++)
vblur(out->data[plane], out->linesize[plane],
out->data[plane], out->linesize[plane],
w[plane], h[plane], s->radius[plane], s->power[plane],
s->temp, pixsize);
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
