libspeexdsp added

src/audio/codecs/Makefile.am

@@ -14,7 +14,7 @@ SPEEX_LIB = libcodec_speex.so
 libcodec_speex_so_SOURCES = speexcodec.cpp
 libcodec_speex_so_CFLAGS = -fPIC -g -Wall
 libcodec_speex_so_CXXFLAGS = -fPIC -g -Wall
-libcodec_speex_so_LDFLAGS = --shared -lc -lspeex
+libcodec_speex_so_LDFLAGS = --shared -lc -lspeex -lspeexdsp -lm
 INSTALL_SPEEX_RULE = install-libcodec_speex_so
 endif
 

src/audio/codecs/alaw.cpp

@@ -36,6 +36,7 @@ public:
         virtual ~Alaw(){}
 	virtual int codecDecode (short *dst, unsigned char *src, unsigned int size) 
 	{
+          // _debug("Decoded by alaw \n");
 		int16* end = dst+size;
         	while(dst<end)
                 	*dst++ = ALawDecode(*src++);
@@ -44,6 +45,7 @@ public:
 
 	virtual int codecEncode (unsigned char *dst, short *src, unsigned int size) 
 	{	
+          // _debug("Encoded by alaw \n");
 		size >>= 1;
         	uint8* end = dst+size;
         	while(dst<end)

src/audio/codecs/gsmcodec.cpp

@@ -52,6 +52,7 @@ public:
   }
 
   virtual int	codecDecode	(short * dst, unsigned char * src, unsigned int size){
+    // _debug("Decoded by gsm \n");
     (void)size;
     if(gsm_decode(_decode_gsmhandle, (gsm_byte*)src, (gsm_signal*)dst) < 0)
       printf("ERROR: gsm_decode\n");
@@ -59,6 +60,8 @@ public:
   }
   
   virtual int	codecEncode	(unsigned char * dst, short * src, unsigned int size){
+        
+    // _debug("Encoded by gsm \n");
 	(void)size;
 	gsm_encode(_encode_gsmhandle, (gsm_signal*)src, (gsm_byte*) dst);
     	return 33;

src/audio/codecs/speexcodec.cpp

@@ -21,6 +21,7 @@
 #include "audiocodec.h"
 #include <cstdio>
 #include <speex/speex.h>
+#include <speex/speex_preprocess.h>
 
 
 class Speex : public AudioCodec{
@@ -32,7 +33,8 @@ public:
         _speex_enc_bits(),
         _speex_dec_state(),
         _speex_enc_state(),
-        _speex_frame_size()
+        _speex_frame_size(),
+        _preprocess_state()
 	{
   	  _clockRate = 8000;
   	  _channel = 1;
@@ -44,7 +46,23 @@ public:
         Speex( const Speex& );
         Speex& operator=(const Speex&);
 
-	void initSpeex() {
+	void initSpeex() { 
+          int temp = 1;
+          int temp10 = 10;
+          int db = -10;
+             
+          int *enable;
+          enable = &temp;
+          
+          int *quality;
+          quality = &temp10;
+
+          int *complex;
+          complex = &temp10;
+
+          int *attenuation;
+          attenuation = &db;
+         
 	/*
   	  if (_clockRate < 16000 ) {
     		_speexModePtr = &speex_nb_mode;
@@ -60,14 +78,27 @@ public:
 
 	// Init the decoder struct
   	  speex_bits_init(&_speex_dec_bits);
-  	  _speex_dec_state = speex_decoder_init(_speexModePtr);
-
-	// Init the encoder struct
+  	  _speex_dec_state = speex_decoder_init(_speexModePtr);      
+ 
+	  // Init the encoder struct
   	  speex_bits_init(&_speex_enc_bits);
   	  _speex_enc_state = speex_encoder_init(_speexModePtr);
-
-  	  speex_decoder_ctl(_speex_dec_state, SPEEX_GET_FRAME_SIZE, &_speex_frame_size); 
-	}
+          speex_encoder_ctl(_speex_enc_state, SPEEX_SET_VAD, enable);
+          speex_encoder_ctl(_speex_enc_state, SPEEX_SET_DTX, enable);
+          speex_encoder_ctl(_speex_enc_state, SPEEX_SET_VBR_QUALITY, quality);
+          speex_encoder_ctl(_speex_enc_state, SPEEX_SET_COMPLEXITY, complex);
+
+          // Init the decoder struct
+  	  speex_decoder_ctl(_speex_dec_state, SPEEX_GET_FRAME_SIZE, &_speex_frame_size);
+
+          // Init the preprocess struct
+          _preprocess_state = speex_preprocess_state_init(_speex_frame_size,_clockRate);
+          speex_preprocess_ctl(_preprocess_state, SPEEX_PREPROCESS_SET_DENOISE, enable);
+          speex_preprocess_ctl(_preprocess_state, SPEEX_PREPROCESS_SET_NOISE_SUPPRESS, attenuation);
+          speex_preprocess_ctl(_preprocess_state, SPEEX_PREPROCESS_SET_VAD, enable);
+          speex_preprocess_ctl(_preprocess_state, SPEEX_PREPROCESS_SET_AGC, enable);
+          
+        }
 
 	~Speex() 
 	{
@@ -91,6 +122,7 @@ public:
     	  int ratio = 320 / _speex_frame_size;
   	  speex_bits_read_from(&_speex_dec_bits, (char*)src, size);
   	  speex_decode_int(_speex_dec_state, &_speex_dec_bits, dst);
+         
   	  return _speex_frame_size * ratio; 
 	}
 
@@ -98,8 +130,8 @@ public:
 	{
   	  speex_bits_reset(&_speex_enc_bits);
   	  speex_encoder_ctl(_speex_enc_state,SPEEX_SET_SAMPLING_RATE,&_clockRate);
-
-  	  speex_encode_int(_speex_enc_state, src, &_speex_enc_bits);
+  	  speex_preprocess_run(_preprocess_state, src);
+          speex_encode_int(_speex_enc_state, src, &_speex_enc_bits);
   	  int nbBytes = speex_bits_write(&_speex_enc_bits, (char*)dst, size); 
   	  return nbBytes;
 	}
@@ -111,6 +143,7 @@ private:
   	void *_speex_dec_state;
   	void *_speex_enc_state;
   	int _speex_frame_size;
+        SpeexPreprocessState *_preprocess_state;
 };
 
 // the class factories

src/audio/codecs/ulaw.cpp

@@ -36,6 +36,7 @@ public:
 	}
 
 	virtual int codecDecode (short *dst, unsigned char *src, unsigned int size) {
+          // _debug("Decoded by ulaw");
 		int16* end = dst+size;
         	while(dst<end)
                 	*dst++ = ULawDecode(*src++);
@@ -43,7 +44,8 @@ public:
 	}
 
 	virtual int codecEncode (unsigned char *dst, short *src, unsigned int size) {
-  		size >>= 1;
+          // _debug("Encoded by ulaw \n");
+                size >>= 1;
         	uint8* end = dst+size;
         	while(dst<end)
                 	*dst++ = ULawEncode(*src++);