[FFmpeg-cvslog] swresample/swresample: fix sample drop loop end condition

[Michael Niedermayer]

ffmpeg | branch: release/2.1 | Michael Niedermayer <michaelni at gmx.at> | Mon Oct  6 01:08:20 2014 +0200| [11313263ab37c433286189de4ac51d29d2e5e18e] | committer: Michael Niedermayer

swresample/swresample: fix sample drop loop end condition

Fixes Ticket3985

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit f9fefa499f0af48f47ea73c8ce0b25df0976c315)

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=11313263ab37c433286189de4ac51d29d2e5e18e
---

 libswresample/swresample.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/libswresample/swresample.c b/libswresample/swresample.c
index 30c3434..ec0c770 100644
--- a/libswresample/swresample.c
+++ b/libswresample/swresample.c
@@ -753,6 +753,8 @@ int swr_convert(struct SwrContext *s, uint8_t *out_arg[SWR_CH_MAX], int out_coun
         in_count = 0;
         if(ret>0) {
             s->drop_output -= ret;
+            if (!s->drop_output && !out_arg)
+                return 0;
             continue;
         }