}
}
-static int end_frame(AVFilterLink *inlink)
+static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *in)
{
AVFilterContext *ctx = inlink->dst;
EdgeDetectContext *edgedetect = ctx->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
- AVFilterBufferRef *inpicref = inlink->cur_buf;
- AVFilterBufferRef *outpicref = outlink->out_buf;
uint8_t *tmpbuf = edgedetect->tmpbuf;
uint16_t *gradients = edgedetect->gradients;
+ AVFilterBufferRef *out;
+
+ out = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ if (!out) {
+ avfilter_unref_bufferp(&in);
+ return AVERROR(ENOMEM);
+ }
+ avfilter_copy_buffer_ref_props(out, in);
/* gaussian filter to reduce noise */
gaussian_blur(ctx, inlink->w, inlink->h,
- tmpbuf, inlink->w,
- inpicref->data[0], inpicref->linesize[0]);
+ tmpbuf, inlink->w,
+ in->data[0], in->linesize[0]);
/* compute the 16-bits gradients and directions for the next step */
sobel(ctx, inlink->w, inlink->h,
/* keep high values, or low values surrounded by high values */
double_threshold(ctx, inlink->w, inlink->h,
- outpicref->data[0], outpicref->linesize[0],
- tmpbuf, inlink->w);
+ out->data[0], out->linesize[0],
+ tmpbuf, inlink->w);
- ff_draw_slice(outlink, 0, outlink->h, 1);
- return ff_end_frame(outlink);
+ avfilter_unref_bufferp(&in);
+ return ff_filter_frame(outlink, out);
}
static av_cold void uninit(AVFilterContext *ctx)
av_freep(&edgedetect->directions);
}
-static int null_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir) { return 0; }
+static const AVFilterPad edgedetect_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_props,
+ .filter_frame = filter_frame,
+ .min_perms = AV_PERM_READ,
+ },
+ { NULL }
+};
+
+static const AVFilterPad edgedetect_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
AVFilter avfilter_vf_edgedetect = {
.name = "edgedetect",
.init = init,
.uninit = uninit,
.query_formats = query_formats,
-
- .inputs = (const AVFilterPad[]) {
- {
- .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .draw_slice = null_draw_slice,
- .config_props = config_props,
- .end_frame = end_frame,
- .min_perms = AV_PERM_READ
- },
- { .name = NULL }
- },
- .outputs = (const AVFilterPad[]) {
- {
- .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- },
- { .name = NULL }
- },
+ .inputs = edgedetect_inputs,
+ .outputs = edgedetect_outputs,
+ .priv_class = &edgedetect_class,
};