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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtMultimedia module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qaudioinput_win32_p.h"
QT_BEGIN_NAMESPACE
//#define DEBUG_AUDIO 1
static CRITICAL_SECTION waveInCriticalSection;
QAudioInputPrivate::QAudioInputPrivate(const QByteArray &device, const QAudioFormat& audioFormat):
settings(audioFormat)
{
bytesAvailable = 0;
buffer_size = 0;
period_size = 0;
m_device = device;
totalTimeValue = 0;
intervalTime = 1000;
errorState = QAudio::NoError;
deviceState = QAudio::StopState;
audioSource = 0;
pullMode = true;
resuming = false;
connect(this,SIGNAL(processMore()),SLOT(deviceReady()));
InitializeCriticalSection(&waveInCriticalSection);
}
QAudioInputPrivate::~QAudioInputPrivate()
{
close();
DeleteCriticalSection(&waveInCriticalSection);
}
void CALLBACK QAudioInputPrivate::waveInProc( HWAVEIN hWaveIn, UINT uMsg,
DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 )
{
Q_UNUSED(dwParam1)
Q_UNUSED(dwParam2)
Q_UNUSED(hWaveIn)
QAudioInputPrivate* qAudio;
qAudio = (QAudioInputPrivate*)(dwInstance);
if(!qAudio)
return;
switch(uMsg) {
case WIM_OPEN:
break;
case WIM_DATA:
EnterCriticalSection(&waveInCriticalSection);
if(qAudio->waveFreeBlockCount > 0)
qAudio->waveFreeBlockCount--;
LeaveCriticalSection(&waveInCriticalSection);
qAudio->feedback();
break;
case WIM_CLOSE:
break;
default:
return;
}
}
WAVEHDR* QAudioInputPrivate::allocateBlocks(int size, int count)
{
int i;
unsigned char* buffer;
WAVEHDR* blocks;
DWORD totalBufferSize = (size + sizeof(WAVEHDR))*count;
if((buffer=(unsigned char*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,
totalBufferSize)) == 0) {
qWarning("QAudioInput: Memory allocation error");
return 0;
}
blocks = (WAVEHDR*)buffer;
buffer += sizeof(WAVEHDR)*count;
for(i = 0; i < count; i++) {
blocks[i].dwBufferLength = size;
blocks[i].lpData = (LPSTR)buffer;
blocks[i].dwBytesRecorded=0;
blocks[i].dwUser = 0L;
blocks[i].dwFlags = 0L;
blocks[i].dwLoops = 0L;
result = waveInPrepareHeader(hWaveIn,&blocks[i], sizeof(WAVEHDR));
if(result != MMSYSERR_NOERROR) {
qWarning("QAudioInput: Can't prepare block %d",i);
return 0;
}
buffer += size;
}
return blocks;
}
void QAudioInputPrivate::freeBlocks(WAVEHDR* blockArray)
{
HeapFree(GetProcessHeap(), 0, blockArray);
}
QAudio::Error QAudioInputPrivate::error() const
{
return errorState;
}
QAudio::State QAudioInputPrivate::state() const
{
return deviceState;
}
QAudioFormat QAudioInputPrivate::format() const
{
return settings;
}
QIODevice* QAudioInputPrivate::start(QIODevice* device)
{
if(deviceState != QAudio::StopState)
close();
if(!pullMode && audioSource) {
delete audioSource;
}
if(device) {
//set to pull mode
pullMode = true;
audioSource = device;
} else {
//set to push mode
pullMode = false;
audioSource = new InputPrivate(this);
audioSource->open(QIODevice::ReadOnly | QIODevice::Unbuffered);
}
if( !open() )
return 0;
emit stateChanged(deviceState);
return audioSource;
}
void QAudioInputPrivate::stop()
{
if(deviceState == QAudio::StopState)
return;
deviceState = QAudio::StopState;
close();
emit stateChanged(deviceState);
}
bool QAudioInputPrivate::open()
{
#ifdef DEBUG_AUDIO
QTime now(QTime::currentTime());
qDebug()<<now.second()<<"s "<<now.msec()<<"ms :open()";
#endif
header = 0;
if(buffer_size == 0) {
// Default buffer size, 100ms, default period size is 20ms
buffer_size = settings.frequency()*settings.channels()*(settings.sampleSize()/8)*0.1;
period_size = buffer_size/5;
} else {
period_size = buffer_size/5;
}
timeStamp.restart();
wfx.nSamplesPerSec = settings.frequency();
wfx.wBitsPerSample = settings.sampleSize();
wfx.nChannels = settings.channels();
wfx.cbSize = 0;
wfx.wFormatTag = WAVE_FORMAT_PCM;
wfx.nBlockAlign = (wfx.wBitsPerSample >> 3) * wfx.nChannels;
wfx.nAvgBytesPerSec = wfx.nBlockAlign * wfx.nSamplesPerSec;
UINT_PTR devId = WAVE_MAPPER;
WAVEINCAPS wic;
unsigned long iNumDevs,ii;
iNumDevs = waveInGetNumDevs();
for(ii=0;ii<iNumDevs;ii++) {
if(waveInGetDevCaps(ii, &wic, sizeof(WAVEINCAPS))
== MMSYSERR_NOERROR) {
QString tmp;
tmp = QString::fromUtf16((const unsigned short*)wic.szPname);
if(tmp.compare(tr(m_device)) == 0) {
devId = ii;
break;
}
}
}
if(waveInOpen(&hWaveIn, devId, &wfx,
(DWORD_PTR)&waveInProc,
(DWORD_PTR) this,
CALLBACK_FUNCTION) != MMSYSERR_NOERROR) {
errorState = QAudio::OpenError;
deviceState = QAudio::StopState;
emit stateChanged(deviceState);
qWarning("QAudioInput: failed to open audio device");
return false;
}
waveBlocks = allocateBlocks(period_size, buffer_size/period_size);
waveFreeBlockCount = buffer_size/period_size;
waveCurrentBlock = 0;
for(int i=0; i<buffer_size/period_size; i++) {
result = waveInAddBuffer(hWaveIn, &waveBlocks[i], sizeof(WAVEHDR));
if(result != MMSYSERR_NOERROR) {
qWarning("QAudioInput: failed to setup block %d,err=%d",i,result);
errorState = QAudio::OpenError;
deviceState = QAudio::StopState;
emit stateChanged(deviceState);
return false;
}
}
result = waveInStart(hWaveIn);
if(result) {
qWarning("QAudioInput: failed to start audio input");
errorState = QAudio::OpenError;
deviceState = QAudio::StopState;
emit stateChanged(deviceState);
return false;
}
timeStampOpened.restart();
totalTimeValue = 0;
errorState = QAudio::NoError;
deviceState = QAudio::ActiveState;
return true;
}
void QAudioInputPrivate::close()
{
deviceState = QAudio::StopState;
int delay = (buffer_size-bytesReady())*1000/(settings.frequency()
*settings.channels()*(settings.sampleSize()/8));
waveInReset(hWaveIn);
Sleep(delay+10);
for(int i=0; i<waveFreeBlockCount; i++) {
if(waveBlocks[i].dwFlags & WHDR_PREPARED)
waveInUnprepareHeader(hWaveIn,&waveBlocks[i],sizeof(WAVEHDR));
}
freeBlocks(waveBlocks);
waveInClose(hWaveIn);
}
int QAudioInputPrivate::bytesReady() const
{
int buf = ((buffer_size/period_size)-waveFreeBlockCount)*period_size;
if(buf < 0)
buf = 0;
return buf;
}
qint64 QAudioInputPrivate::read(char* data, qint64 len)
{
bool done = false;
char* p = data;
qint64 l = 0;
qint64 written = 0;
while(!done) {
// Read in some audio data
if(waveBlocks[header].dwBytesRecorded > 0) {
if(pullMode) {
l = audioSource->write(waveBlocks[header].lpData,
waveBlocks[header].dwBytesRecorded);
#ifdef DEBUG_AUDIO
qDebug()<<"IN: "<<waveBlocks[header].dwBytesRecorded<<", OUT: "<<l;
#endif
if(l < 0) {
// error
qWarning("QAudioInput: IOError");
errorState = QAudio::IOError;
} else if(l == 0) {
// cant write to IODevice
qWarning("QAudioInput: IOError, can't write to QIODevice");
errorState = QAudio::IOError;
} else {
totalTimeValue += waveBlocks[header].dwBytesRecorded
/((settings.channels()*settings.sampleSize()/8))
*10000/settings.frequency()*100;
errorState = QAudio::NoError;
deviceState = QAudio::ActiveState;
resuming = false;
}
} else {
// push mode
memcpy(p,waveBlocks[header].lpData,waveBlocks[header].dwBytesRecorded);
l = waveBlocks[header].dwBytesRecorded;
#ifdef DEBUG_AUDIO
qDebug()<<"IN: "<<waveBlocks[header].dwBytesRecorded<<", OUT: "<<l;
#endif
totalTimeValue += waveBlocks[header].dwBytesRecorded
/((settings.channels()*settings.sampleSize()/8))
*10000/settings.frequency()*100;
errorState = QAudio::NoError;
deviceState = QAudio::ActiveState;
resuming = false;
}
} else {
//no data, not ready yet, next time
return 0;
}
EnterCriticalSection(&waveInCriticalSection);
waveFreeBlockCount++;
LeaveCriticalSection(&waveInCriticalSection);
waveBlocks[header].dwBytesRecorded=0;
waveBlocks[header].dwFlags = 0L;
result = waveInPrepareHeader(hWaveIn,&waveBlocks[header], sizeof(WAVEHDR));
if(result != MMSYSERR_NOERROR) {
qWarning("QAudioInput: failed to prepare block %d,err=%d",header,result);
errorState = QAudio::OpenError;
deviceState = QAudio::StopState;
emit stateChanged(deviceState);
}
result = waveInAddBuffer(hWaveIn, &waveBlocks[header], sizeof(WAVEHDR));
if(result != MMSYSERR_NOERROR) {
qWarning("QAudioInput: failed to setup block %d,err=%d",header,result);
errorState = QAudio::OpenError;
deviceState = QAudio::StopState;
emit stateChanged(deviceState);
}
header++;
if(header >= buffer_size/period_size)
header = 0;
p+=l;
if(!pullMode) {
if(l+period_size > len && waveFreeBlockCount == buffer_size/period_size)
done = true;
} else {
if(waveFreeBlockCount == buffer_size/period_size)
done = true;
}
written+=l;
}
#ifdef DEBUG_AUDIO
qDebug()<<"read in len="<<written;
#endif
return written;
}
void QAudioInputPrivate::resume()
{
if(deviceState == QAudio::SuspendState) {
deviceState = QAudio::ActiveState;
for(int i=0; i<buffer_size/period_size; i++) {
result = waveInAddBuffer(hWaveIn, &waveBlocks[i], sizeof(WAVEHDR));
if(result != MMSYSERR_NOERROR) {
qWarning("QAudioInput: failed to setup block %d,err=%d",i,result);
errorState = QAudio::OpenError;
deviceState = QAudio::StopState;
emit stateChanged(deviceState);
return;
}
}
waveFreeBlockCount = buffer_size/period_size;
waveCurrentBlock = 0;
header = 0;
resuming = true;
waveInStart(hWaveIn);
QTimer::singleShot(20,this,SLOT(feedback()));
emit stateChanged(deviceState);
}
}
void QAudioInputPrivate::setBufferSize(int value)
{
buffer_size = value;
}
int QAudioInputPrivate::bufferSize() const
{
return buffer_size;
}
int QAudioInputPrivate::periodSize() const
{
return period_size;
}
void QAudioInputPrivate::setNotifyInterval(int ms)
{
intervalTime = ms;
}
int QAudioInputPrivate::notifyInterval() const
{
return intervalTime;
}
qint64 QAudioInputPrivate::totalTime() const
{
return totalTimeValue;
}
void QAudioInputPrivate::suspend()
{
if(deviceState == QAudio::ActiveState) {
waveInReset(hWaveIn);
deviceState = QAudio::SuspendState;
emit stateChanged(deviceState);
}
}
void QAudioInputPrivate::feedback()
{
#ifdef DEBUG_AUDIO
QTime now(QTime::currentTime());
qDebug()<<now.second()<<"s "<<now.msec()<<"ms :feedback() INPUT";
#endif
bytesAvailable = bytesReady();
if(!(deviceState==QAudio::StopState||deviceState==QAudio::SuspendState))
emit processMore();
}
bool QAudioInputPrivate::deviceReady()
{
#ifdef DEBUG_AUDIO
QTime now(QTime::currentTime());
qDebug()<<now.second()<<"s "<<now.msec()<<"ms :deviceReady() INPUT";
#endif
if(pullMode) {
// reads some audio data and writes it to QIODevice
read(0,0);
} else {
// emits readyRead() so user will call read() on QIODevice to get some audio data
InputPrivate* a = qobject_cast<InputPrivate*>(audioSource);
a->trigger();
}
if(deviceState != QAudio::ActiveState)
return true;
if(timeStamp.elapsed() > intervalTime && intervalTime > 50) {
emit notify();
timeStamp.restart();
}
return true;
}
qint64 QAudioInputPrivate::clock() const
{
if(deviceState != QAudio::ActiveState)
return 0;
return timeStampOpened.elapsed();
}
void QAudioInputPrivate::reset()
{
close();
}
InputPrivate::InputPrivate(QAudioInputPrivate* audio)
{
audioDevice = qobject_cast<QAudioInputPrivate*>(audio);
}
InputPrivate::~InputPrivate() {}
qint64 InputPrivate::readData( char* data, qint64 len)
{
// push mode, user read() called
if(audioDevice->deviceState != QAudio::ActiveState)
return 0;
// Read in some audio data
return audioDevice->read(data,len);
}
qint64 InputPrivate::writeData(const char* data, qint64 len)
{
Q_UNUSED(data)
Q_UNUSED(len)
emit readyRead();
return 0;
}
void InputPrivate::trigger()
{
emit readyRead();
}
QT_END_NAMESPACE
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