AVFilterContext *ctx = inlink->dst;
AlphaMergeContext *merge = ctx->priv;
+ int ret = 0;
int is_alpha = (inlink == ctx->inputs[1]);
struct FFBufQueue *queue =
(is_alpha ? &merge->queue_alpha : &merge->queue_main);
ff_bufqueue_add(ctx, queue, buf);
- while (1) {
+ do {
AVFrame *main_buf, *alpha_buf;
if (!ff_bufqueue_peek(&merge->queue_main, 0) ||
merge->frame_requested = 0;
draw_frame(ctx, main_buf, alpha_buf);
- ff_filter_frame(ctx->outputs[0], main_buf);
+ ret = ff_filter_frame(ctx->outputs[0], main_buf);
av_frame_free(&alpha_buf);
- }
- return 0;
+ } while (ret >= 0);
+ return ret;
}
static int request_frame(AVFilterLink *outlink)