VAD refactor: Mode changed to "int".

As part of style this CL includes changing the input aggressiveness mode from int16_t to int. No other style changes made.
Impact on:
- Audio Processing: Changed return value on MapSetting().
- Function test in audio_conference_mixer already uses int. No action.
- NetEq: Function pointer changes and input parameter changes in SetVADMode() and SetVADModeInternal().
- Audio Coding: Uses enum ACMVADMode which is type independent.
- VAD: Two unit tests.

TESTS=vad_unittests, neteq_unittests, audioproc_unittest
Review URL: https://webrtc-codereview.appspot.com/373001

git-svn-id: http://webrtc.googlecode.com/svn/trunk@1544 4adac7df-926f-26a2-2b94-8c16560cd09d

src/modules/audio_coding/neteq/dsp.c

@@ -471,8 +471,7 @@ int WebRtcNetEQ_InitVAD(PostDecodeVAD_t *VADInst, WebRtc_UWord16 fs)
  *						  -1 - Error
  */
 
-int WebRtcNetEQ_SetVADModeInternal(PostDecodeVAD_t *VADInst,
-    WebRtc_Word16 mode)
+int WebRtcNetEQ_SetVADModeInternal(PostDecodeVAD_t *VADInst, int mode)
 {
 
     int res = 0;

src/modules/audio_coding/neteq/dsp.h

@@ -189,7 +189,7 @@ typedef struct ExpandInst_t_
  * WebRtcVad_set_mode and WebRtcVad_Process, respectively, all found in webrtc_vad.h.
  */
 typedef int (*VADInitFunction)(void *VAD_inst);
-typedef int (*VADSetmodeFunction)(void *VAD_inst, WebRtc_Word16 mode);
+typedef int (*VADSetmodeFunction)(void *VAD_inst, int mode);
 typedef WebRtc_Word16 (*VADFunction)(void *VAD_inst, WebRtc_Word16 fs, WebRtc_Word16 *frame,
                                      WebRtc_Word16 frameLen);
 
@@ -200,7 +200,7 @@ typedef struct PostDecodeVAD_t_
     void *VADState; /* pointer to a VAD instance */
 
     WebRtc_Word16 VADEnabled; /* 1 if enabled, 0 if disabled */
-    WebRtc_Word16 VADMode; /* mode parameter to pass to the VAD function */
+    int VADMode; /* mode parameter to pass to the VAD function */
     WebRtc_Word16 VADDecision; /* 1 for active, 0 for passive */
     WebRtc_Word16 SIDintervalCounter; /* reset when decoding CNG/SID frame,
      increment for each recout call */
@@ -700,7 +700,7 @@ int WebRtcNetEQ_InitVAD(PostDecodeVAD_t *VADInst, WebRtc_UWord16 fs);
  *						  -1 - Error
  */
 
-int WebRtcNetEQ_SetVADModeInternal(PostDecodeVAD_t *VADInst, WebRtc_Word16 mode);
+int WebRtcNetEQ_SetVADModeInternal(PostDecodeVAD_t *VADInst, int mode);
 
 #endif /* NETEQ_VAD */
 

src/modules/audio_coding/neteq/interface/webrtc_neteq_internal.h

@@ -139,7 +139,7 @@ int WebRtcNetEQ_GetRawFrameWaitingTimes(void *inst,
  * WebRtcVad_set_mode and WebRtcVad_Process, respectively, all found in webrtc_vad.h.
  */
 typedef int (*WebRtcNetEQ_VADInitFunction)(void *VAD_inst);
-typedef int (*WebRtcNetEQ_VADSetmodeFunction)(void *VAD_inst, WebRtc_Word16 mode);
+typedef int (*WebRtcNetEQ_VADSetmodeFunction)(void *VAD_inst, int mode);
 typedef WebRtc_Word16 (*WebRtcNetEQ_VADFunction)(void *VAD_inst, WebRtc_Word16 fs,
                                                  WebRtc_Word16 *frame, WebRtc_Word16 frameLen);
 
@@ -189,7 +189,7 @@ int WebRtcNetEQ_SetVADInstance(void *NetEQ_inst, void *VAD_inst,
  *						  -1 - Error
  */
 
-int WebRtcNetEQ_SetVADMode(void *NetEQ_inst, WebRtc_Word16 mode);
+int WebRtcNetEQ_SetVADMode(void *NetEQ_inst, int mode);
 
 /****************************************************************************
  * WebRtcNetEQ_RecOutNoDecode(...)

src/modules/audio_coding/neteq/webrtc_neteq.c

@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
@@ -1632,7 +1632,7 @@ int WebRtcNetEQ_SetVADInstance(void *NetEQ_inst, void *VAD_inst,
  *						  -1 - Error
  */
 
-int WebRtcNetEQ_SetVADMode(void *inst, WebRtc_Word16 mode)
+int WebRtcNetEQ_SetVADMode(void *inst, int mode)
 {
 
     /* Typecast to internal instance type */