PortAudio library integration instead of alsa and oss

CHANGES

 
-SFLphone (0.3.1) / 2005-05-27
+SFLphone (0.3.1) / 2005-06-01
+	* Add PortAudio library to make easy sound portability
 	* Reorganisation of SFLphone architecture
 	* Handle error messages on screen
 	* Handle refused call

Makefile

@@ -4,6 +4,8 @@
 # Author: Laurielle Lea (laurielle.lea@savoirfairelinux.com)
 #
 all:
+	cd stund; make
+	cd src/audio/portaudio; make
 	cd src/audio/gsm ; make
 	cd src; make
 
@@ -14,6 +16,8 @@ uninstall:
 	cd src; make uninstall
 
 clean:
-	cd src; make clean
+	cd stund; make clean
+	cd src/audio/portaudio; make clean
 	cd src/audio/gsm ; make clean
+	cd src; make clean
 

configure

@@ -33,10 +33,7 @@ CLASSIC_DIRS=/usr:/usr/local:/opt
 usage () {
 	echo "Usage: $0 [options]"
 	echo "Options:
-	-prefix DIR         Set install prefix
-	-oss                Enable OSS support
-	-alsa               Enable ALSA support 
-	-macosx             Enable MacOSX audio support [Not supported yet]"
+	-prefix DIR         Set install prefix"
 }
 
 # Check if $1 is contained in $PATH-style $2. Optionally $3 is "-p" to print
@@ -83,11 +80,11 @@ do
 			shift 2
 			;;
 		-oss)
-			DEFVARS="-DOSS ${DEFVARS}"
+			DEFVARS="-DAUDIO_OSS ${DEFVARS}"
 			shift
 			;;
 		-alsa)
-			DEFVARS="-DALSA ${DEFVARS}"
+			DEFVARS="-DAUDIO_ALSA ${DEFVARS}"
 			shift
 			;;
 		-help|--help|-h)

src/Makefile

@@ -17,13 +17,31 @@ SKINS = skins
 RINGS = rings
 METAL_SKINS = metal
 
-INCPATH  = -I. -I$(QTDIR)/include -I$(CCPPDIR)/include/cc++2 -I$(CCRTPDIR)/include -I$(OSIPDIR)/include -I$(EXOPSIP)/include -I/usr/include -Iaudio/gsm
+# Platform-specific variables
+HOSTMACH = $(shell uname -m | sed -e 's/ //g')
+ifeq (${HOSTSYSTEM},PowerMacintosh)
+	MACHOPTS=-mpowerpc
+	HOSTDEFS=-DGUI_TEXT1 -DAUDIO_MACOSX
+else
+	HOSTSYS = $(shell uname -s)
+endif
+
+ifeq (${HOSTSYS},Linux)
+	HOSTMACH = $(shell uname -m | sed -e 's/i.86/i386/')
+	HOSTLIBS=-lX11 -lXext -lasound -lqt-mt
+	# HOSTDEFS=-DGUI_TEXT1 -DAUDIO_OSS # eventually
+	HOSTDEFS=-DGUI_QT -DAUDIO_ALSA
+	ifeq (${HOSTMACH},i386)
+		MACHOPTS=-march=i386
+	endif
+endif
 
-CXXFLAGS = -pipe -Wall -W -g -pipe -march=i386 -mcpu=i686  -DQT_NO_DEBUG -DQT_SHARED -DQT_THREAD_SUPPORT -fpermissive -Wno-deprecated $(INCPATH)
+INCPATH  = -I. -I$(QTDIR)/include -I$(CCPPDIR)/include/cc++2 -I$(CCRTPDIR)/include -I$(OSIPDIR)/include -I$(EXOPSIP)/include -I/usr/include -Iaudio/gsm -Iaudio/portaudio/pa_common 
+CXXFLAGS = -pipe -Wall -W -g $(MACHOPTS) -pipe -DQT_NO_DEBUG -DQT_SHARED -DQT_THREAD_SUPPORT -fpermissive -Wno-deprecated $(INCPATH)
 
-LIBS=-L$(QTDIR)/lib -L/usr/X11R6/lib -lqt-mt -lXext -lX11 -lm -L/opt/lib -losip2 -leXosip -lccrtp1 -lasound `$(CCPPDIR)/bin/ccgnu2-config --flags --stdlibs` 
+LIBS=-L$(QTDIR)/lib -L/usr/X11R6/lib -lm -L/opt/lib -losip2 -leXosip -lccrtp1 $(HOSTLIBS) `$(CCPPDIR)/bin/ccgnu2-config --flags --stdlibs` 
 
-EXTRALIBS=audio/gsm/libgsm.a
+EXTRALIBS=audio/gsm/libgsm.a audio/portaudio/lib/libportaudio.a
 
 CONFIGURE_CONF=$(shell ls ../configure.conf)
 
@@ -35,6 +53,7 @@ OBJS = \
 	audio/audiodrivers.o \
 	audio/audiodriversalsa.o \
 	audio/audiodriversoss.o \
+	audio/audiodriversportaudio.o \
 	audio/audiortp.o \
 	audio/dtmf.o \
 	audio/dtmfgenerator.o \
@@ -82,8 +101,8 @@ OBJS = \
 	udp.o 
   		
 	
-start:	check prereq all
-#start:check all
+#start:	check prereq all
+start:check all
 
 check:
 ifeq ($(CONFIGURE_CONF),../configure.conf)
@@ -93,7 +112,7 @@ else
 endif
 
 .cpp.o:
-	$(CXX) $(DEFVARS) $(CXXFLAGS) -c -o $@ $<
+	$(CXX) $(DEFVARS) -DAUDIO_PORTAUDIO $(CXXFLAGS) -c -o $@ $<
 
 prereq:	gui/qt/url_input.ui gui/qt/configurationpanel.ui 
 	@echo "Making User Interface files..."

src/audio/audiocodec.cpp

@@ -18,11 +18,21 @@
  */
 
 
-#include <endian.h>
+#if defined(__APPLE__)
+# include <machine/endian.h>
+#else
+# include <endian.h>
+#endif
 #include <string.h>
 #include <iostream>
 #include <string>
 
+#include "portaudio/pa_common/portaudio.h"
+#include "portaudio/pa_common/pa_converters.h"
+#include "portaudio/pa_common/pa_dither.h"
+
+#include "../global.h"
+
 #include "audiocodec.h"
 #include "../configuration.h"
 
@@ -49,6 +59,29 @@ AudioCodec::getCodecName (void)
 	return _codecName;
 }
 
+void 
+AudioCodec::float32ToInt16 (float32* src, int16* dst, int size) {
+	PaUtilConverter* myconverter;
+	struct  PaUtilTriangularDitherGenerator tdg;
+	PaUtil_InitializeTriangularDitherState (&tdg);
 
+	myconverter = PaUtil_SelectConverter (paFloat32, paInt16, paNoFlag);
+	if (myconverter != NULL) {
+		myconverter(dst, 1, src, 1, size, &tdg);
+	} else {
+		_debug("Format conversion is not supported\n");
+	}
+}
 
+void 
+AudioCodec::int16ToFloat32 (int16* src, float32* dst, int size) {
+	PaUtilConverter* myconverter;
+
+	myconverter = PaUtil_SelectConverter (paInt16, paFloat32, paNoFlag);
+	if (myconverter != NULL) {
+		myconverter(dst, 1, src, 1, size, NULL);
+	} else {
+		_debug("Format conversion is not supported\n");
+	}
+}
 

src/audio/audiocodec.h

@@ -21,7 +21,8 @@
 #define __CODEC_AUDIO_H__
 
 
-#include <string>
+#include <string> 
+#include "../global.h"
 
 using namespace std;
 
@@ -37,6 +38,8 @@ public:
 	
 	void setCodecName (const string& codec);
 	string getCodecName (void);
+	void float32ToInt16 (float32* src, int16* dst, int size);
+	void int16ToFloat32 (int16* src, float32* dst, int size);
 
 private:
 	string _codecName;

src/audio/audiodrivers.h

@@ -44,7 +44,6 @@ public:
 	virtual int	 resetDevice		(void) = 0;
 	virtual int  writeBuffer		(void) = 0;
 	virtual int	 readBuffer			(void *, int) = 0;
-	virtual int	 readBuffer			(int) = 0;
 	virtual unsigned int readableBytes (void) = 0;
 
 

src/audio/audiodriversalsa.cpp

@@ -17,6 +17,8 @@
  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+//#if defined(AUDIO_ALSA)
+
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/time.h>
@@ -237,4 +239,5 @@ AudioDriversALSA::resetDevice (void) {
 	return 0;
 }
 
+//#endif // defined(AUDIO_ALSA)
 // EOF

src/audio/audiodriversalsa.h

@@ -17,6 +17,8 @@
  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+//#ifdef AUDIO_ALSA
+
 #ifndef _AUDIO_DRIVERS_ALSA_H_
 #define _AUDIO_DRIVERS_ALSA_H_
 
@@ -48,7 +50,6 @@ public:
 	int		resetDevice	(void);	
 	int 	writeBuffer	(void);
 	int		readBuffer 	(void *, int);
-	int		readBuffer 	(int) { return 0; }
 	unsigned int readableBytes (void) { return 0; }
 	
 private:
@@ -59,3 +60,5 @@ private:
 };
 
 #endif  // _AUDIO_DRIVERS_ALSA_H_
+
+//#endif // defined(AUDIO_ALSA)

src/audio/audiodriversoss.cpp

@@ -20,6 +20,8 @@
  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#if defined(AUDIO_OSS)
+
 #include <errno.h>
 #include <string.h>
 #include <sys/ioctl.h>
@@ -205,61 +207,6 @@ AudioDriversOSS::readBuffer (void *ptr, int bytes) {
 	return rc;
 }
 
-int
-AudioDriversOSS::readBuffer (int bytes) {
-	if( devstate != DeviceOpened ) {
-		return -1;
-	}
-
-	audio_buf.resize(bytes);
-	ssize_t count = bytes;
-
-	short *buf;
-	buf = (short*)audio_buf.getData();
-	ssize_t rc;
-
-	rc = read (audio_fd, buf, count);
-	if (rc < 0) {
-		_debug ("rc < 0 read(): %s\n", strerror(errno));
-	}
-	
-	else if (rc != count) {
-		_debug ("WARNING: asked microphone for %d got %d\n", count, rc);
-	}
-
-	return rc;
-}
-
-int
-AudioDriversOSS::writeBuffer (void *ptr, int len) {
-	if (devstate != DeviceOpened ) {
-		error->errorName(DEVICE_NOT_OPEN, NULL);
-		return -1;
-	}
-	
-	audio_buf_info info;
-	
-	if (ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &info) == 0 ) {
-		if (info.fragstotal - info.fragments > 15) {
-			// drop the fragment if the buffer starts to fill up
-			return 1;
-		}
-	}
-	
-	// Loop into write() while buffer not complete.
-	for (;;) {
-		int a;
-		if ((a = write(audio_fd, ptr, len)) < 0) {
-			_debug ("write(): %s\n", strerror(errno));
-			break;
-		}
-		if (a > 0) { 
-			return a;
-			break;
-		}
-	}
-	return 1; 
-}
 
 int
 AudioDriversOSS::writeBuffer (void) {
@@ -323,4 +270,5 @@ AudioDriversOSS::readableBytes(void) {
 	return info.bytes;
 }
 
+#endif // defined(AUDIO_OSS)
 

src/audio/audiodriversoss.h

@@ -20,6 +20,8 @@
  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#if defined(AUDIO_OSS)
+
 #ifndef _AUDIO_DRIVERS_OSS_H
 #define _AUDIO_DRIVERS_OSS_H
 
@@ -38,10 +40,8 @@ public:
 	int		initDevice		(DeviceMode);
 	int		resetDevice		(void);
 	bool	openDevice 		(int);
-	int	 	writeBuffer		(void *, int);
 	int	 	writeBuffer		(void);
 	int 	readBuffer		(void *, int);
-	int 	readBuffer		(int);
 	unsigned int readableBytes (void);
 
 	int audio_fd;
@@ -51,3 +51,5 @@ private:
 };
 
 #endif // _AUDIO_DRIVERS_OSS_H
+
+#endif // defined(AUDIO_OSS)

src/audio/audiortp.cpp

@@ -27,6 +27,7 @@
 #include "audiortp.h"
 #include "../configuration.h"
 #include "../manager.h"
+#include "../global.h"
 #include "../user_cfg.h"
 #include "../sipcall.h"
 #include "../stund/stun.h"
@@ -65,17 +66,9 @@ AudioRtp::createNewSession (SipCall *ca) {
 	} else {
 		_symetric = true;
 	}
-	
-#ifdef ALSA
-	if (_manager->useAlsa()) {
-		_RTXThread = new AudioRtpRTX (ca, _manager->audiodriver, 
-				_manager->audiodriverReadAlsa, _manager, _symetric);
-	}
-#endif
-	if (!_manager->useAlsa()) {
-		_RTXThread = new AudioRtpRTX (ca, _manager->audiodriver, NULL,_manager, 
-			_symetric);
-	}
+
+	_RTXThread = new AudioRtpRTX (ca, _manager->getAudioDriver(), 
+								_manager, _symetric);
 	
 	if (_RTXThread->start() != 0) {
 		return -1;
@@ -96,25 +89,20 @@ AudioRtp::closeRtpSession (SipCall *ca) {
 			_RTXThread = NULL;
 		}
 		// Flush audio read buffer
-		_manager->audiodriver->resetDevice();
+		_manager->getAudioDriver()->stopStream();
 	}
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // AudioRtpRTX Class                                                          //
 ////////////////////////////////////////////////////////////////////////////////
-AudioRtpRTX::AudioRtpRTX (SipCall *sipcall, AudioDrivers *driver, 
-		AudioDrivers *read_driver, Manager *mngr, bool sym) {
+AudioRtpRTX::AudioRtpRTX (SipCall *sipcall, AudioDriversPortAudio* driver, 
+		Manager *mngr, bool sym) {
 	time = new Time();
 	_manager = mngr;
 	_ca = sipcall;
 	_sym =sym;
 	_audioDevice = driver;
-#ifdef ALSA
-	if (_manager->useAlsa()) {
-		_audioDeviceRead = read_driver;
-	}
-#endif
 
 	// TODO: Change bind address according to user settings.
 	InetHostAddress local_ip("0.0.0.0");
@@ -152,20 +140,22 @@ AudioRtpRTX::~AudioRtpRTX () {
 void
 AudioRtpRTX::run (void) {
 	unsigned char	*data_to_send;
-	short			*data_mute;
-	short			*data_from_mic;
-	short			*data_from_mic_tmp;
-	int				 i,
-					 compSize, 
+	int16			*data_from_mic_int16;
+	float32			*data_mute;
+	float32			*data_from_mic;
+	float32			*data_from_mic_tmp;
+	int				 compSize, 
 					 timestamp;
 	int				 expandedSize;
-	short			*data_for_speakers = NULL;
 	int	 			 countTime = 0;
-	data_for_speakers = new short[2048];
-	data_from_mic = new short[1024];
-	data_from_mic_tmp = new short[1024];
+	int16			*data_for_speakers = NULL;
+	float32			*data_for_speakers_float = NULL;
+	
+	data_from_mic = new float32[1024];
+	data_from_mic_tmp = new float32[1024];
+	data_mute = new float32[1024];
 	data_to_send = new unsigned char[1024];
-	data_mute = new short[1024];
+	data_for_speakers = new int16[2048];
 
 	InetHostAddress remote_ip(_ca->getRemoteSdpAudioIp());
 	
@@ -238,47 +228,35 @@ AudioRtpRTX::run (void) {
 		// Send session
 		////////////////////////////
 		int size = 320;
-		if (!_manager->getCall(_ca->getId())->isOnMute()) {
-#ifdef ALSA
-			if (_manager->useAlsa()) {
-				i = _audioDeviceRead->readBuffer (data_from_mic, size);
-			}
-#endif
-			if (!_manager->useAlsa()) {
-				i = _audioDevice->readBuffer (data_from_mic, size);
-			}
-		} 
-	else {
+		if (!_manager->getCall(_ca->getId())->isOnMute()) {	
+			_manager->getAudioDriver()->mydata.dataIn = data_from_mic;
+		} else {
 			// When IP-phone user click on mute button, we read buffer of a
 			// temp buffer to avoid delay in sound.
-#ifdef ALSA
-			if (_manager->useAlsa())
-				i = _audioDeviceRead->readBuffer (data_mute, size);
-#endif
-			if (!_manager->useAlsa())
-				i = _audioDevice->readBuffer (data_mute, size);
-		}
-		// TODO : return an error because no sound
-		if (i < 0) {
-			break;
+			_manager->getAudioDriver()->mydata.dataIn = data_mute;
 		}
-		for (int j = 0; j < i; j++) {
+		
+		for (int j = 0; j < size; j++) {
 			data_from_mic_tmp[j] = data_from_mic[j] * 
 												_manager->getMicroVolume()/100;
 		}
+
+		// Convert float32 buffer to int16 to encode
+		data_from_mic_int16 = new int16[size];
+		_ca->getAudioCodec()->float32ToInt16 (data_from_mic_tmp, 
+				data_from_mic_int16, size);
 		
 		// Encode acquired audio sample
 		compSize = _ca->getAudioCodec()->codecEncode (data_to_send,
-													  data_from_mic_tmp, 
-													  i);
+													  data_from_mic_int16, 
+													  size);
 		// Send encoded audio sample
 		if (!_sym) {
 			_sessionSend->putData(timestamp, data_to_send, compSize);
 		} else {
 			_session->putData(timestamp, data_to_send, compSize);
 		}
-		timestamp += 160;
-
+		timestamp += MY_TIMESTAMP;
 		////////////////////////////
 		// Recv session
 		////////////////////////////
@@ -302,10 +280,13 @@ AudioRtpRTX::run (void) {
 									    (unsigned char*) adu->getData(),
 										adu->getSize());
 			
+		// To convert int16 to float32 after decoding
+		data_for_speakers_float = new float32[expandedSize];
+		ac->int16ToFloat32 (data_for_speakers, data_for_speakers_float, 
+				expandedSize);
+
 		// Set decoded data to sound device
-		_audioDevice->audio_buf.resize(expandedSize);
-		_audioDevice->audio_buf.setData (data_for_speakers, 
-										 _manager->getSpkrVolume()); 
+		_manager->getAudioDriver()->mydata.dataOut = data_for_speakers_float;
 
 		// Notify (with a bip) an incoming call when there is already a call 
 		countTime += time->getSecond();
@@ -316,18 +297,23 @@ AudioRtpRTX::run (void) {
 			}
 		} 
 	  	
-		// Write data or notification
-		i = _audioDevice->writeBuffer ();
 		delete cd;
 		delete adu;
    
 		// Let's wait for the next transmit cycle
 		Thread::sleep(TimerPort::getTimer());
 		TimerPort::incTimer(frameSize); // 'frameSize' ms
+
+		if (!_manager->getAudioDriver()->isStreamActive()) {
+			_manager->getAudioDriver()->mydata.dataToAddRem = 0;
+			_manager->getAudioDriver()->startStream();
+		}
 	}
 		 
 	delete[] data_for_speakers;
+	delete[] data_for_speakers_float;
 	delete[] data_from_mic;
+	delete[] data_from_mic_int16;
 	delete[] data_from_mic_tmp;
 	delete[] data_mute;
 	delete[] data_to_send;

src/audio/audiortp.h

@@ -28,9 +28,9 @@
 using namespace ost;
 
 
-#define LEN_BUFFER	160
+#define MY_TIMESTAMP	160
 
-class AudioDrivers;
+class AudioDriversPortAudio;
 class Manager;
 class SipCall;
 
@@ -39,23 +39,20 @@ class SipCall;
 ///////////////////////////////////////////////////////////////////////////////
 class AudioRtpRTX : public Thread, public TimerPort {
 public:
-	AudioRtpRTX (SipCall *, AudioDrivers *, AudioDrivers *, Manager *, bool);
+	AudioRtpRTX (SipCall *, AudioDriversPortAudio*, Manager *, bool);
 	~AudioRtpRTX();
 
 	Time *time; 	// For incoming call notification 
 	virtual void run ();
 
 private:
-	SipCall*			_ca;
-	AudioDrivers*		_audioDevice;
-#ifdef ALSA
-	AudioDrivers*		_audioDeviceRead;
-#endif
-	RTPSession*			_sessionSend;
-	RTPSession*			_sessionRecv;
-	SymmetricRTPSession* _session;
-	Manager*			_manager;
-	bool			 	_sym;
+	SipCall*				_ca;
+	AudioDriversPortAudio*	_audioDevice;
+	RTPSession*				_sessionSend;
+	RTPSession*				_sessionRecv;
+	SymmetricRTPSession* 	_session;
+	Manager*				_manager;
+	bool			 		_sym;
 };
 
 ///////////////////////////////////////////////////////////////////////////////

src/audio/dtmf.cpp

@@ -36,7 +36,7 @@ DTMF::startTone (char code) {
 }
 
 bool 
-DTMF::generateDTMF (short* buffer, size_t n) {
+DTMF::generateDTMF (float32* buffer, size_t n) {
 	if (!buffer) return false;
 
 	if (currentTone != 0) {

src/audio/dtmf.h

@@ -23,6 +23,7 @@
 #ifndef __DTMF_H_
 #define __DTMF_H_
 
+#include "../global.h"
 #include "dtmfgenerator.h"
 
 class DTMF {
@@ -31,7 +32,7 @@ public:
 	~DTMF (void);
 	
 	void startTone		(char);
-	bool generateDTMF	(short*, size_t);
+	bool generateDTMF	(float32*, size_t);
 
 	char currentTone;
 	char newTone;

src/audio/dtmfgenerator.cpp

@@ -92,7 +92,7 @@ DTMFGenerator::~DTMFGenerator() {
 /*
  * Get n samples of the signal of code code
  */
-void DTMFGenerator::getSamples(short* buffer, size_t n, unsigned char code) throw(DTMFException) {
+void DTMFGenerator::getSamples(float32* buffer, size_t n, unsigned char code) throw(DTMFException) {
 	size_t i;
 	if (!buffer) {
 		     //	throw DTMFException("Invalid parameter value");
@@ -137,7 +137,7 @@ void DTMFGenerator::getSamples(short* buffer, size_t n, unsigned char code) thro
  * Get next n samples (continues where previous call to
  * genSample or genNextSamples stopped
  */
-void DTMFGenerator::getNextSamples(short* buffer, size_t n) throw(DTMFException)
+void DTMFGenerator::getNextSamples(float32* buffer, size_t n) throw(DTMFException)
 {
 	size_t i;
 
@@ -162,17 +162,17 @@ void DTMFGenerator::getNextSamples(short* buffer, size_t n) throw(DTMFException)
 /*
  * Generate a tone sample
  */
-short* DTMFGenerator::generateSample(unsigned char code) throw (DTMFException) {
-	short* ptr;
+float32* DTMFGenerator::generateSample(unsigned char code) throw (DTMFException) {
+	float32* ptr;
 
 	//	try {
-		ptr = new short[SAMPLING_RATE];