af_amix: return AVERROR(EAGAIN) when request_frame didn't produce output.

0 should only be returned when there was at least one output frame.
13 years ago · 54bf88e65f
parent 428b369804
commit 54bf88e65f
1 changed files with 2 additions and 2 deletions
--- a/libavfilter/af_amix.c
+++ b/libavfilter/af_amix.c
@ -409,7 +409,7 @@ static int request_frame(AVFilterLink *outlink)

        available_samples = get_available_samples(s);
        if (!available_samples)
-            return 0;
+            return AVERROR(EAGAIN);

        return output_frame(outlink, available_samples);
    }
@ -440,7 +440,7 @@ static int request_frame(AVFilterLink *outlink)

        available_samples = get_available_samples(s);
        if (!available_samples)
-            return 0;
+            return AVERROR(EAGAIN);
        available_samples = FFMIN(available_samples, wanted_samples);
    } else {
        available_samples = wanted_samples;