[FFmpeg-cvslog] examples/filtering_audio: suppress the build warning.

[Jun Zhao]

ffmpeg | branch: master | Jun Zhao <jun.zhao at intel.com> | Tue Oct 31 16:12:36 2017 +0800| [5c51d0edd4f37d675cbe1a010baa38c6968b8f19] | committer: Michael Niedermayer

examples/filtering_audio: suppress the build warning.

suppress the "warning: assignment discards ‘const’ qualifier from
pointer target type" build warning.

Signed-off-by: Jun Zhao <jun.zhao at intel.com>
Reviewed-by: Steven Liu <lingjiujianke at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5c51d0edd4f37d675cbe1a010baa38c6968b8f19
---

 doc/examples/filtering_audio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/examples/filtering_audio.c b/doc/examples/filtering_audio.c
index d58b9b75ea..18d6ca275c 100644
--- a/doc/examples/filtering_audio.c
+++ b/doc/examples/filtering_audio.c
@@ -89,8 +89,8 @@ static int init_filters(const char *filters_descr)
 {
     char args[512];
     int ret = 0;
-    AVFilter *abuffersrc  = avfilter_get_by_name("abuffer");
-    AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
+    const AVFilter *abuffersrc  = avfilter_get_by_name("abuffer");
+    const AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
     AVFilterInOut *outputs = avfilter_inout_alloc();
     AVFilterInOut *inputs  = avfilter_inout_alloc();
     static const enum AVSampleFormat out_sample_fmts[] = { AV_SAMPLE_FMT_S16, -1 };