lavr: Do not change the sample format for mono audio

[ffmpeg] / libavresample / audio_data.h

diff --git a/libavresample/audio_data.h b/libavresample/audio_data.h
index 97236bb5de97ee49f08ea496be9fb9feda34e12e..15419765839bf8006d400f34fa286ed8caa6db34 100644 (file)
--- a/libavresample/audio_data.h
+++ b/libavresample/audio_data.h
@@ -29,6 +29,8 @@
 #include "avresample.h"
 #include "internal.h"
 
+int ff_sample_fmt_is_planar(enum AVSampleFormat sample_fmt, int channels);
+
 /**
  * Audio buffer used for intermediate storage between conversion phases.
  */