[FFmpeg-cvslog] lavfi/overlay: clarify/fix comment, add a few empty lines to ease readability

[Stefano Sabatini]

ffmpeg | branch: master | Stefano Sabatini <stefasab at gmail.com> | Sat Dec 15 13:09:26 2012 +0100| [54b0c04ae3a4073b9764358b925b0b73da3a9e09] | committer: Stefano Sabatini

lavfi/overlay: clarify/fix comment, add a few empty lines to ease readability

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=54b0c04ae3a4073b9764358b925b0b73da3a9e09
---

 libavfilter/vf_overlay.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavfilter/vf_overlay.c b/libavfilter/vf_overlay.c
index 01a829c..33db9ef 100644
--- a/libavfilter/vf_overlay.c
+++ b/libavfilter/vf_overlay.c
@@ -475,7 +475,7 @@ static int try_start_frame(AVFilterContext *ctx, AVFilterBufferRef *mainpic)
     AVFilterBufferRef *next_overpic, *outpicref;
     int ret;
 
-    /* Discard obsolete overlay frames: if there is a next frame with pts is
+    /* Discard obsolete overlay frames: if there is a next overlay frame with pts
      * before the main frame, we can drop the current overlay. */
     while (1) {
         next_overpic = ff_bufqueue_peek(&over->queue_over, 0);
@@ -486,12 +486,14 @@ static int try_start_frame(AVFilterContext *ctx, AVFilterBufferRef *mainpic)
         avfilter_unref_buffer(over->overpicref);
         over->overpicref = next_overpic;
     }
+
     /* If there is no next frame and no EOF and the overlay frame is before
      * the main frame, we can not know yet if it will be superseded. */
     if (!over->queue_over.available && !over->overlay_eof &&
         (!over->overpicref || av_compare_ts(over->overpicref->pts, ctx->inputs[OVERLAY]->time_base,
                                             mainpic->pts         , ctx->inputs[MAIN]->time_base) < 0))
         return AVERROR(EAGAIN);
+
     /* At this point, we know that the current overlay frame extends to the
      * time of the main frame. */
     outlink->out_buf = outpicref = avfilter_ref_buffer(mainpic, ~0);