return 0;
}
-static int poll_frame(AVFilterLink *link)
-{
- ThumbContext *thumb = link->src->priv;
- AVFilterLink *inlink = link->src->inputs[0];
- int ret, available_frames = ff_poll_frame(inlink);
-
- /* If the input link is not able to provide any frame, we can't do anything
- * at the moment and thus have zero thumbnail available. */
- if (!available_frames)
- return 0;
-
- /* Since at least one frame is available and the next frame will allow us
- * to compute a thumbnail, we can return 1 frame. */
- if (thumb->n == thumb->n_frames - 1)
- return 1;
-
- /* we have some frame(s) available in the input link, but not yet enough to
- * output a thumbnail, so we request more */
- ret = ff_request_frame(inlink);
- return ret < 0 ? ret : 0;
-}
-
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = request_frame,
- .poll_frame = poll_frame,
},
{ NULL }
};