+ .priv_class = &filter_class,
+
+ .inputs = avfilter_vf_frei0r_inputs,
+
+ .outputs = avfilter_vf_frei0r_outputs,
+};
+
+static av_cold int source_init(AVFilterContext *ctx)
+{
+ Frei0rContext *s = ctx->priv;
+ AVRational frame_rate_q;
+
+ if (av_parse_video_size(&s->w, &s->h, s->size) < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid frame size: '%s'.\n", s->size);
+ return AVERROR(EINVAL);
+ }
+
+ if (av_parse_video_rate(&frame_rate_q, s->framerate) < 0 ||
+ frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'.\n", s->framerate);
+ return AVERROR(EINVAL);
+ }
+ s->time_base.num = frame_rate_q.den;
+ s->time_base.den = frame_rate_q.num;
+
+ return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_SOURCE);
+}
+
+static int source_config_props(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ Frei0rContext *s = ctx->priv;
+
+ if (av_image_check_size(s->w, s->h, 0, ctx) < 0)
+ return AVERROR(EINVAL);
+ outlink->w = s->w;
+ outlink->h = s->h;
+ outlink->time_base = s->time_base;
+ outlink->frame_rate = av_inv_q(s->time_base);
+
+ if (s->destruct && s->instance)
+ s->destruct(s->instance);
+ if (!(s->instance = s->construct(outlink->w, outlink->h))) {
+ av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance.\n");
+ return AVERROR(EINVAL);
+ }
+ if (!s->params) {
+ av_log(ctx, AV_LOG_ERROR, "frei0r filter parameters not set.\n");
+ return AVERROR(EINVAL);
+ }
+
+ return set_params(ctx, s->params);
+}
+
+static int source_request_frame(AVFilterLink *outlink)
+{
+ Frei0rContext *s = outlink->src->priv;
+ AVFrame *frame = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+
+ if (!frame)
+ return AVERROR(ENOMEM);
+
+ frame->sample_aspect_ratio = (AVRational) {1, 1};
+ frame->pts = s->pts++;
+
+ s->update(s->instance, av_rescale_q(frame->pts, s->time_base, (AVRational){1,1000}),
+ NULL, (uint32_t *)frame->data[0]);
+
+ return ff_filter_frame(outlink, frame);
+}
+
+static const AVOption src_options[] = {
+ { "size", "Dimensions of the generated video.", OFFSET(size), AV_OPT_TYPE_STRING, { .str = "" }, .flags = FLAGS },
+ { "framerate", NULL, OFFSET(framerate), AV_OPT_TYPE_STRING, { .str = "25" }, .flags = FLAGS },
+ { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { NULL },
+};
+
+static const AVClass src_class = {
+ .class_name = "frei0r_src",
+ .item_name = av_default_item_name,
+ .option = src_options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+static const AVFilterPad avfilter_vsrc_frei0r_src_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .request_frame = source_request_frame,
+ .config_props = source_config_props
+ },
+ { NULL }
+};
+
+AVFilter ff_vsrc_frei0r_src = {
+ .name = "frei0r_src",
+ .description = NULL_IF_CONFIG_SMALL("Generate a frei0r source."),
+
+ .priv_size = sizeof(Frei0rContext),
+ .priv_class = &src_class,
+ .init = source_init,
+ .uninit = uninit,
+
+ .query_formats = query_formats,
+
+ .inputs = NULL,