Made multi-channel AEC API compatible with the previous one.stereo

1 files changed, 10 insertions, 1 deletions

diff --git a/include/speex/speex_echo.h b/include/speex/speex_echo.h
index aef1f64..1970af4 100644
--- a/include/speex/speex_echo.h
+++ b/include/speex/speex_echo.h
@@ -74,7 +74,16 @@ typedef struct SpeexEchoState_ SpeexEchoState;
  * @param filter_length Number of samples of echo to cancel (should generally correspond to 100-500 ms)
  * @return Newly-created echo canceller state
  */
-SpeexEchoState *speex_echo_state_init(int frame_size, int filter_length, int nb_mic, int nb_speakers);
+SpeexEchoState *speex_echo_state_init(int frame_size, int filter_length);
+
+/** Creates a new multi-channel echo canceller state
+ * @param frame_size Number of samples to process at one time (should correspond to 10-20 ms)
+ * @param filter_length Number of samples of echo to cancel (should generally correspond to 100-500 ms)
+ * @param nb_mic Number of microphone channels
+ * @param nb_speakers Number of speaker channels
+ * @return Newly-created echo canceller state
+ */
+SpeexEchoState *speex_echo_state_init_mc(int frame_size, int filter_length, int nb_mic, int nb_speakers);
 
 /** Destroys an echo canceller state 
  * @param st Echo canceller state