enum { Y, U, V, A };
typedef struct {
- int frame_requested;
int is_packed_rgb;
uint8_t rgba_map[4];
struct FFBufQueue queue_main;
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat alpha_fmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
- AVFilterFormats *main_formats = ff_make_format_list(main_fmts);
- AVFilterFormats *alpha_formats = ff_make_format_list(alpha_fmts);
- ff_formats_ref(main_formats, &ctx->inputs[0]->out_formats);
- ff_formats_ref(alpha_formats, &ctx->inputs[1]->out_formats);
- ff_formats_ref(main_formats, &ctx->outputs[0]->in_formats);
+ AVFilterFormats *main_formats, *alpha_formats;
+ int ret;
+
+ if (!(main_formats = ff_make_format_list(main_fmts)) ||
+ !(alpha_formats = ff_make_format_list(alpha_fmts)))
+ return AVERROR(ENOMEM);
+ if ((ret = ff_formats_ref(main_formats , &ctx->inputs[0]->out_formats)) < 0 ||
+ (ret = ff_formats_ref(alpha_formats, &ctx->inputs[1]->out_formats)) < 0 ||
+ (ret = ff_formats_ref(main_formats , &ctx->outputs[0]->in_formats)) < 0)
+ return ret;
return 0;
}
main_buf = ff_bufqueue_get(&merge->queue_main);
alpha_buf = ff_bufqueue_get(&merge->queue_alpha);
- merge->frame_requested = 0;
draw_frame(ctx, main_buf, alpha_buf);
ret = ff_filter_frame(ctx->outputs[0], main_buf);
av_frame_free(&alpha_buf);
AlphaMergeContext *merge = ctx->priv;
int in, ret;
- merge->frame_requested = 1;
- while (merge->frame_requested) {
- in = ff_bufqueue_peek(&merge->queue_main, 0) ? 1 : 0;
- ret = ff_request_frame(ctx->inputs[in]);
- if (ret < 0)
- return ret;
- }
+ in = ff_bufqueue_peek(&merge->queue_main, 0) ? 1 : 0;
+ ret = ff_request_frame(ctx->inputs[in]);
+ if (ret < 0)
+ return ret;
return 0;
}