X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavfilter%2Faf_surround.c;h=f29afecbfb6409104a0447c8546d999bad48d26d;hb=9a88a47be4da9cd25a582feec7cc36790500b481;hp=460e18cd5ada08613d3cd51a887e73bf51ba7d62;hpb=7a10541109cc04ffddc15f0749139aab80f56ebf;p=ffmpeg

diff --git a/libavfilter/af_surround.c b/libavfilter/af_surround.c
index 460e18cd5ad..f29afecbfb6 100644
--- a/libavfilter/af_surround.c
+++ b/libavfilter/af_surround.c
@@ -1390,6 +1390,27 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     return 0;
 }
 
+static int request_frame(AVFilterLink *outlink)
+{
+    AVFilterContext *ctx = outlink->src;
+    AudioSurroundContext *s = ctx->priv;
+    int ret = 0;
+
+    ret = ff_request_frame(ctx->inputs[0]);
+
+    if (ret == AVERROR_EOF && av_audio_fifo_size(s->fifo) > 0 && av_audio_fifo_size(s->fifo) < s->buf_size) {
+        AVFrame *in;
+
+        in = ff_get_audio_buffer(outlink, s->buf_size - av_audio_fifo_size(s->fifo));
+        if (!in)
+            return AVERROR(ENOMEM);
+        ret = filter_frame(ctx->inputs[0], in);
+        av_audio_fifo_drain(s->fifo, s->buf_size);
+    }
+
+    return ret;
+}
+
 static av_cold void uninit(AVFilterContext *ctx)
 {
     AudioSurroundContext *s = ctx->priv;
@@ -1445,9 +1466,10 @@ static const AVFilterPad inputs[] = {
 
 static const AVFilterPad outputs[] = {
     {
-        .name         = "default",
-        .type         = AVMEDIA_TYPE_AUDIO,
-        .config_props = config_output,
+        .name          = "default",
+        .type          = AVMEDIA_TYPE_AUDIO,
+        .request_frame = request_frame,
+        .config_props  = config_output,
     },
     { NULL }
 };