lavr: add a public function for setting a custom channel map

This allows reordering, duplication, and silencing of input channels.

1 files changed, 3 insertions, 1 deletions

diff --git a/libavresample/audio_convert.h b/libavresample/audio_convert.h
index 7d47b15bf3..6a3089d4fb 100644
--- a/libavresample/audio_convert.h
+++ b/libavresample/audio_convert.h
@@ -58,12 +58,14 @@ void ff_audio_convert_set_func(AudioConvert *ac, enum AVSampleFormat out_fmt,
  * @param in_fmt      input sample format
  * @param channels    number of channels
  * @param sample_rate sample rate (used for dithering)
+ * @param apply_map   apply channel map during conversion
  * @return            newly-allocated AudioConvert context
  */
 AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr,
                                      enum AVSampleFormat out_fmt,
                                      enum AVSampleFormat in_fmt,
-                                     int channels, int sample_rate);
+                                     int channels, int sample_rate,
+                                     int apply_map);
 
 /**
  * Free AudioConvert.