[FFmpeg-cvslog] avfilter/buffersink: try to fix AV_NOPTS_VALUE

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Oct  9 16:28:51 2013 +0200| [0f322feffdf25fee55ab3925c09d27dd6452cf96] | committer: Michael Niedermayer

avfilter/buffersink: try to fix AV_NOPTS_VALUE

no testcase available, just found this issue by reading the code

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0f322feffdf25fee55ab3925c09d27dd6452cf96
---

 libavfilter/buffersink.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavfilter/buffersink.c b/libavfilter/buffersink.c
index 6dca209..df1cb65 100644
--- a/libavfilter/buffersink.c
+++ b/libavfilter/buffersink.c
@@ -167,8 +167,9 @@ static int read_from_fifo(AVFilterContext *ctx, AVFrame *frame,
     av_audio_fifo_read(s->audio_fifo, (void**)tmp->extended_data, nb_samples);
 
     tmp->pts = s->next_pts;
-    s->next_pts += av_rescale_q(nb_samples, (AVRational){1, link->sample_rate},
-                                link->time_base);
+    if (s->next_pts != AV_NOPTS_VALUE)
+        s->next_pts += av_rescale_q(nb_samples, (AVRational){1, link->sample_rate},
+                                    link->time_base);
 
     av_frame_move_ref(frame, tmp);
     av_frame_free(&tmp);
@@ -252,6 +253,7 @@ static av_cold int common_init(AVFilterContext *ctx)
         return AVERROR(ENOMEM);
     }
     buf->warning_limit = 100;
+    buf->next_pts = AV_NOPTS_VALUE;
     return 0;
 }