Commit ea1617a9 authored by llea's avatar llea
Browse files

Add audiodriversportaudio files

parent 196df527
/**
* Copyright (C) 2005 Savoir-Faire Linux inc.
* Author: Jerome Oufella <jerome.oufella@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifdef AUDIO_PORTAUDIO
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "audiodriversportaudio.h"
#include "../global.h"
#include "../manager.h"
AudioDriversPortAudio::AudioDriversPortAudio (Manager* manager) {
_manager = manager;
mydata.dataToAddRem = 0;
mydata.dataFilled = 0;
mydata.dataIn = NULL;
mydata.dataOut = NULL;
this->initDevice();
}
// Destructor
AudioDriversPortAudio::~AudioDriversPortAudio (void)
{
closeDevice();
Pa_Terminate ();
}
int
AudioDriversPortAudio::resetDevice (void) {
return 1;
}
int
AudioDriversPortAudio::initDevice (void) {
int err;
err = Pa_Initialize();
if (err != paNoError) {
_debug ("PortAudio error in Pa_Initialize(): %s\n", Pa_GetErrorText(err));
exit (1);
//TODO: change exit to a clean GUI dialog (fatal).
}
return 1;
}
int
AudioDriversPortAudio::closeDevice (void) {
int err = Pa_CloseStream(_stream);
if (err != paNoError) {
_debug ("PortAudio error in Pa_CloseStream: %s\n", Pa_GetErrorText(err));
exit (1);
//TODO: change exit to a clean GUI dialog (fatal).
}
return 1;
}
bool
AudioDriversPortAudio::openDevice (void) {
int err = Pa_OpenDefaultStream (
&_stream, /* passes back stream pointer */
1, /* mono input */
1, /* mono output */
paFloat32, /* 32 bit float output */
SAMPLING_RATE, /* sample rate */
FRAME_PER_BUFFER, /* frames per buffer */
audioCallback, /* specify our custom callback */
&mydata); /* pass our data through to callback */
if (err != paNoError) {
_debug ("PortAudio error in Pa_OpenDefaultStream: %s\n", Pa_GetErrorText(err));
exit (1);
//TODO: change exit to a clean GUI dialog (fatal).
}
return true;
}
int
AudioDriversPortAudio::readBuffer (void *ptr, int bytes) {
return 1;
}
int
AudioDriversPortAudio::writeBuffer (void *ptr, int len) {
return 1;
}
int
AudioDriversPortAudio::startStream(void)
{
int err;
err = Pa_StartStream (_stream);
if( err != paNoError ) {
_debug ("PortAudio error in Pa_StartStream: %s\n", Pa_GetErrorText(err));
return 0;
}
return 1;
}
int
AudioDriversPortAudio::stopStream(void)
{
int err;
err = Pa_StopStream (_stream);
if( err != paNoError ) {
_debug ("PortAudio error in Pa_StopStream: %s\n", Pa_GetErrorText(err));
return 0;
}
return 1;
}
void
AudioDriversPortAudio::sleep(int msec)
{
Pa_Sleep(msec);
}
int
AudioDriversPortAudio::isStreamActive (void)
{
return Pa_IsStreamActive (_stream);
}
int
AudioDriversPortAudio::isStreamStopped (void)
{
return Pa_IsStreamStopped (_stream);
}
int
AudioDriversPortAudio::getDeviceCount (void)
{
return Pa_GetDeviceCount();
}
int
AudioDriversPortAudio::audioCallback (const void *inputBuffer,
void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData) {
(void) timeInfo;
(void) statusFlags;
float32 *in = (float32 *) inputBuffer;
float32 *out = (float32 *) outputBuffer;
paData* data = (paData*) userData;
unsigned int i;
#if 1
/* Fill output buffer */
int j = data->dataToAddRem;
int k = data->dataFilled;
for (i = 0; i < framesPerBuffer; i++) {
if (j > 0 && k < j) {
*out++ = data->dataToAdd[i+k];
} else {
*out++ = data->dataOut[i];
}
}
k += framesPerBuffer;
if (k >= j) {
data->dataFilled = 0;
} else {
data->dataFilled = k;
}
#endif
/* Read input buffer */
if (data->dataIn != NULL) {
memcpy (data->dataIn, in, sizeof(float32) * framesPerBuffer);
}
#if 0
int j = data->dataToAddRem;
/* Fill output buffer */
for (i = 0; i < framesPerBuffer; i++) {
if (j > 0 && j >= i) {
*out++ = data->dataToAdd[j-i];
} else {
*out++ = data->dataOut[i];
}
}
j = j - i;
if (j > 0) {
data->dataToAddRem = j;
} else {
data->dataToAddRem = 0;
// cout << "please FREE data->dataToAdd now!!!" << endl;
}
#endif
return paContinue;
}
#endif // defined(AUDIO_PORTAUDIO)
/**
* Copyright (C) 2004-2005 Savoir-Faire Linux inc.
* Author: Jerome Oufella <jerome.oufella@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if defined(AUDIO_PORTAUDIO)
#ifndef _AUDIO_DRIVERS_PORTAUDIO_H
#define _AUDIO_DRIVERS_PORTAUDIO_H
#include "portaudio/pa_common/portaudio.h"
#include "../global.h"
#define TABLE_SIZE 360
#define FRAME_PER_BUFFER 160
class Manager;
class AudioDriversPortAudio {
public:
struct paData {
float32 *dataIn; // From mic
float32 *dataOut; // To spk
float32 *dataToAdd; // To spk
int dataToAddRem;
int dataFilled;
};
paData mydata;
AudioDriversPortAudio (Manager*);
~AudioDriversPortAudio (void);
int resetDevice (void);
int initDevice (void);
bool openDevice (void);
int writeBuffer (void *, int);
int readBuffer (void *, int);
int startStream (void);
int stopStream (void);
void sleep (int);
int isStreamActive (void);
int isStreamStopped (void);
int getDeviceCount (void);
static int audioCallback (const void *, void *, unsigned long,
const PaStreamCallbackTimeInfo*, PaStreamCallbackFlags, void *);
private:
int closeDevice (void);
Manager* _manager;
PaStream* _stream;
};
#endif // _AUDIO_DRIVERS_PORTAUDIO_H_
#endif // defined(AUDIO_PORTAUDIO)
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