48 kHz extension to iSAC.

Test:
-manual test with voe_cmd_test.
-manual test with RTPEncode & NetEqRTPPlay.
-manual test with simpleKenny.
-Bit-exact test of iSAC-swb and iSAC-wb with head revision of trunk. The bit-exactness is confirmed on all files generated by running webrtc/modules/audio_coding/codecs/isac/main/test/QA/runiSACLongtest.txt
Review URL: https://webrtc-codereview.appspot.com/937025

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3226 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/audio_coding/neteq/interface/webrtc_neteq.h

@@ -37,6 +37,7 @@ enum WebRtcNetEQDecoder
     kDecoderILBC,
     kDecoderISAC,
     kDecoderISACswb,
+    kDecoderISACfb,
     kDecoderPCM16B,
     kDecoderPCM16Bwb,
     kDecoderPCM16Bswb32kHz,

webrtc/modules/audio_coding/neteq/interface/webrtc_neteq_help_macros.h

@@ -102,6 +102,18 @@
                     inst.funcDurationEst=NULL; \
                     inst.funcGetErrorCode=(WebRtcNetEQ_FuncGetErrorCode)WebRtcIsac_GetErrorCode;
 
+#define SET_ISACFB_FUNCTIONS(inst) \
+                    inst.funcDecode=(WebRtcNetEQ_FuncDecode)WebRtcIsac_Decode; \
+                    inst.funcDecodeRCU=(WebRtcNetEQ_FuncDecode)WebRtcIsac_DecodeRcu; \
+                    inst.funcDecodePLC=NULL; \
+                    inst.funcDecodeInit=(WebRtcNetEQ_FuncDecodeInit)WebRtcIsac_DecoderInit; \
+                    inst.funcAddLatePkt=NULL; \
+                    inst.funcGetMDinfo=NULL; \
+                    inst.funcGetPitch=NULL; \
+                    inst.funcUpdBWEst=(WebRtcNetEQ_FuncUpdBWEst)WebRtcIsac_UpdateBwEstimate; \
+                    inst.funcDurationEst=NULL; \
+                    inst.funcGetErrorCode=(WebRtcNetEQ_FuncGetErrorCode)WebRtcIsac_GetErrorCode;
+
 #define SET_G729_FUNCTIONS(inst) \
                     inst.funcDecode=(WebRtcNetEQ_FuncDecode)WebRtcG729_Decode; \
                     inst.funcDecodeRCU=NULL; \