diff options
Diffstat (limited to 'src/multimedia/audio/qaudiooutput_win32_p.cpp')
| -rw-r--r-- | src/multimedia/audio/qaudiooutput_win32_p.cpp | 604 |
1 files changed, 604 insertions, 0 deletions
diff --git a/src/multimedia/audio/qaudiooutput_win32_p.cpp b/src/multimedia/audio/qaudiooutput_win32_p.cpp new file mode 100644 index 0000000..a8aeb41 --- /dev/null +++ b/src/multimedia/audio/qaudiooutput_win32_p.cpp @@ -0,0 +1,604 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** 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 "qaudiooutput_win32_p.h" + +//#define DEBUG_AUDIO 1 + +QT_BEGIN_NAMESPACE + +QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat): + settings(audioFormat) +{ + bytesAvailable = 0; + buffer_size = 0; + period_size = 0; + m_device = device; + totalTimeValue = 0; + intervalTime = 1000; + audioBuffer = 0; + errorState = QAudio::NoError; + deviceState = QAudio::StoppedState; + audioSource = 0; + pullMode = true; + finished = false; +} + +QAudioOutputPrivate::~QAudioOutputPrivate() +{ + mutex.lock(); + finished = true; + mutex.unlock(); + + close(); +} + +void CALLBACK QAudioOutputPrivate::waveOutProc( HWAVEOUT hWaveOut, UINT uMsg, + DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 ) +{ + Q_UNUSED(dwParam1) + Q_UNUSED(dwParam2) + Q_UNUSED(hWaveOut) + + QAudioOutputPrivate* qAudio; + qAudio = (QAudioOutputPrivate*)(dwInstance); + if(!qAudio) + return; + + QMutexLocker(&qAudio->mutex); + + switch(uMsg) { + case WOM_OPEN: + qAudio->feedback(); + break; + case WOM_CLOSE: + return; + case WOM_DONE: + if(qAudio->finished || qAudio->buffer_size == 0 || qAudio->period_size == 0) { + return; + } + qAudio->waveFreeBlockCount++; + if(qAudio->waveFreeBlockCount >= qAudio->buffer_size/qAudio->period_size) + qAudio->waveFreeBlockCount = qAudio->buffer_size/qAudio->period_size; + qAudio->feedback(); + break; + default: + return; + } +} + +WAVEHDR* QAudioOutputPrivate::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("QAudioOutput: 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; + buffer += size; + } + return blocks; +} + +void QAudioOutputPrivate::freeBlocks(WAVEHDR* blockArray) +{ + WAVEHDR* blocks = blockArray; + + int count = buffer_size/period_size; + + for(int i = 0; i < count; i++) { + waveOutUnprepareHeader(hWaveOut,blocks, sizeof(WAVEHDR)); + blocks+=sizeof(WAVEHDR); + } + HeapFree(GetProcessHeap(), 0, blockArray); +} + +QAudioFormat QAudioOutputPrivate::format() const +{ + return settings; +} + +QIODevice* QAudioOutputPrivate::start(QIODevice* device) +{ + if(deviceState != QAudio::StoppedState) + close(); + + if(!pullMode && audioSource) { + delete audioSource; + } + + if(device) { + //set to pull mode + pullMode = true; + audioSource = device; + deviceState = QAudio::ActiveState; + } else { + //set to push mode + pullMode = false; + audioSource = new OutputPrivate(this); + audioSource->open(QIODevice::WriteOnly|QIODevice::Unbuffered); + deviceState = QAudio::IdleState; + } + + if( !open() ) + return 0; + + emit stateChanged(deviceState); + + return audioSource; +} + +void QAudioOutputPrivate::stop() +{ + if(deviceState == QAudio::StoppedState) + return; + close(); + if(!pullMode && audioSource) { + delete audioSource; + audioSource = 0; + } + emit stateChanged(deviceState); +} + +bool QAudioOutputPrivate::open() +{ +#ifdef DEBUG_AUDIO + QTime now(QTime::currentTime()); + qDebug()<<now.second()<<"s "<<now.msec()<<"ms :open()"; +#endif + if (!(settings.frequency() >= 8000 && settings.frequency() <= 48000)) { + errorState = QAudio::OpenError; + deviceState = QAudio::StoppedState; + emit stateChanged(deviceState); + qWarning("QAudioOutput: open error, frequency out of range."); + return false; + } + if(buffer_size == 0) { + // Default buffer size, 200ms, default period size is 40ms + buffer_size = settings.frequency()*settings.channels()*(settings.sampleSize()/8)*0.2; + period_size = buffer_size/5; + } else { + period_size = buffer_size/5; + } + waveBlocks = allocateBlocks(period_size, buffer_size/period_size); + + mutex.lock(); + waveFreeBlockCount = buffer_size/period_size; + mutex.unlock(); + + waveCurrentBlock = 0; + + if(audioBuffer == 0) + audioBuffer = new char[buffer_size]; + + timeStamp.restart(); + elapsedTimeOffset = 0; + + 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; + + WAVEOUTCAPS woc; + unsigned long iNumDevs,ii; + iNumDevs = waveOutGetNumDevs(); + for(ii=0;ii<iNumDevs;ii++) { + if(waveOutGetDevCaps(ii, &woc, sizeof(WAVEOUTCAPS)) + == MMSYSERR_NOERROR) { + QString tmp; + tmp = QString((const QChar *)woc.szPname); + if(tmp.compare(QLatin1String(m_device)) == 0) { + devId = ii; + break; + } + } + } + + if(waveOutOpen(&hWaveOut, devId, &wfx, + (DWORD_PTR)&waveOutProc, + (DWORD_PTR) this, + CALLBACK_FUNCTION) != MMSYSERR_NOERROR) { + errorState = QAudio::OpenError; + deviceState = QAudio::StoppedState; + emit stateChanged(deviceState); + qWarning("QAudioOutput: open error"); + return false; + } + + totalTimeValue = 0; + timeStampOpened.restart(); + elapsedTimeOffset = 0; + + errorState = QAudio::NoError; + if(pullMode) { + deviceState = QAudio::ActiveState; + QTimer::singleShot(10, this, SLOT(feedback())); + } else + deviceState = QAudio::IdleState; + + return true; +} + +void QAudioOutputPrivate::close() +{ + if(deviceState == QAudio::StoppedState) + return; + + deviceState = QAudio::StoppedState; + errorState = QAudio::NoError; + int delay = (buffer_size-bytesFree())*1000/(settings.frequency() + *settings.channels()*(settings.sampleSize()/8)); + waveOutReset(hWaveOut); + Sleep(delay+10); + + freeBlocks(waveBlocks); + waveOutClose(hWaveOut); + delete [] audioBuffer; + audioBuffer = 0; + buffer_size = 0; +} + +int QAudioOutputPrivate::bytesFree() const +{ + int buf; + buf = waveFreeBlockCount*period_size; + + return buf; +} + +int QAudioOutputPrivate::periodSize() const +{ + return period_size; +} + +void QAudioOutputPrivate::setBufferSize(int value) +{ + if(deviceState == QAudio::StoppedState) + buffer_size = value; +} + +int QAudioOutputPrivate::bufferSize() const +{ + return buffer_size; +} + +void QAudioOutputPrivate::setNotifyInterval(int ms) +{ + intervalTime = qMax(0, ms); +} + +int QAudioOutputPrivate::notifyInterval() const +{ + return intervalTime; +} + +qint64 QAudioOutputPrivate::processedUSecs() const +{ + if (deviceState == QAudio::StoppedState) + return 0; + qint64 result = qint64(1000000) * totalTimeValue / + (settings.channels()*(settings.sampleSize()/8)) / + settings.frequency(); + + return result; +} + +qint64 QAudioOutputPrivate::write( const char *data, qint64 len ) +{ + // Write out some audio data + if (deviceState != QAudio::ActiveState && deviceState != QAudio::IdleState) + return 0; + + char* p = (char*)data; + int l = (int)len; + + WAVEHDR* current; + int remain; + current = &waveBlocks[waveCurrentBlock]; + while(l > 0) { + mutex.lock(); + if(waveFreeBlockCount==0) { + mutex.unlock(); + break; + } + mutex.unlock(); + + if(current->dwFlags & WHDR_PREPARED) + waveOutUnprepareHeader(hWaveOut, current, sizeof(WAVEHDR)); + + if(l < period_size) + remain = l; + else + remain = period_size; + memcpy(current->lpData, p, remain); + + l -= remain; + p += remain; + current->dwBufferLength = remain; + waveOutPrepareHeader(hWaveOut, current, sizeof(WAVEHDR)); + waveOutWrite(hWaveOut, current, sizeof(WAVEHDR)); + + mutex.lock(); + waveFreeBlockCount--; +#ifdef DEBUG_AUDIO + qDebug("write out l=%d, waveFreeBlockCount=%d", + current->dwBufferLength,waveFreeBlockCount); +#endif + mutex.unlock(); + totalTimeValue += current->dwBufferLength; + waveCurrentBlock++; + waveCurrentBlock %= buffer_size/period_size; + current = &waveBlocks[waveCurrentBlock]; + current->dwUser = 0; + errorState = QAudio::NoError; + if (deviceState != QAudio::ActiveState) { + deviceState = QAudio::ActiveState; + emit stateChanged(deviceState); + } + } + return (len-l); +} + +void QAudioOutputPrivate::resume() +{ + if(deviceState == QAudio::SuspendedState) { + deviceState = QAudio::ActiveState; + errorState = QAudio::NoError; + waveOutRestart(hWaveOut); + QTimer::singleShot(10, this, SLOT(feedback())); + emit stateChanged(deviceState); + } +} + +void QAudioOutputPrivate::suspend() +{ + if(deviceState == QAudio::ActiveState || deviceState == QAudio::IdleState) { + int delay = (buffer_size-bytesFree())*1000/(settings.frequency() + *settings.channels()*(settings.sampleSize()/8)); + waveOutPause(hWaveOut); + Sleep(delay+10); + deviceState = QAudio::SuspendedState; + errorState = QAudio::NoError; + emit stateChanged(deviceState); + } +} + +void QAudioOutputPrivate::feedback() +{ +#ifdef DEBUG_AUDIO + QTime now(QTime::currentTime()); + qDebug()<<now.second()<<"s "<<now.msec()<<"ms :feedback()"; +#endif + bytesAvailable = bytesFree(); + + if(!(deviceState==QAudio::StoppedState||deviceState==QAudio::SuspendedState)) { + if(bytesAvailable >= period_size) + QMetaObject::invokeMethod(this, "deviceReady", Qt::QueuedConnection); + } +} + +bool QAudioOutputPrivate::deviceReady() +{ + if(deviceState == QAudio::StoppedState || deviceState == QAudio::SuspendedState) + return false; + + if(pullMode) { + int chunks = bytesAvailable/period_size; +#ifdef DEBUG_AUDIO + qDebug()<<"deviceReady() avail="<<bytesAvailable<<" bytes, period size="<<period_size<<" bytes"; + qDebug()<<"deviceReady() no. of chunks that can fit ="<<chunks<<", chunks in bytes ="<<chunks*period_size; +#endif + bool startup = false; + if(totalTimeValue == 0) + startup = true; + + bool full=false; + + mutex.lock(); + if(waveFreeBlockCount==0) full = true; + mutex.unlock(); + + if (full){ +#ifdef DEBUG_AUDIO + qDebug() << "Skipping data as unable to write"; +#endif + if(intervalTime && (timeStamp.elapsed() + elapsedTimeOffset) > intervalTime ) { + emit notify(); + elapsedTimeOffset = timeStamp.elapsed() + elapsedTimeOffset - intervalTime; + timeStamp.restart(); + } + return true; + } + + if(startup) + waveOutPause(hWaveOut); + int input = period_size*chunks; + int l = audioSource->read(audioBuffer,input); + if(l > 0) { + int out= write(audioBuffer,l); + if(out > 0) { + if (deviceState != QAudio::ActiveState) { + deviceState = QAudio::ActiveState; + emit stateChanged(deviceState); + } + } + if ( out < l) { + // Didnt write all data + audioSource->seek(audioSource->pos()-(l-out)); + } + if(startup) + waveOutRestart(hWaveOut); + } else if(l == 0) { + bytesAvailable = bytesFree(); + + int check = 0; + + mutex.lock(); + check = waveFreeBlockCount; + mutex.unlock(); + + if(check == buffer_size/period_size) { + if (deviceState != QAudio::IdleState) { + errorState = QAudio::UnderrunError; + deviceState = QAudio::IdleState; + emit stateChanged(deviceState); + } + } + + } else if(l < 0) { + bytesAvailable = bytesFree(); + errorState = QAudio::IOError; + } + } else { + int buffered; + + mutex.lock(); + buffered = waveFreeBlockCount; + mutex.unlock(); + + if (buffered >= buffer_size/period_size && deviceState == QAudio::ActiveState) { + if (deviceState != QAudio::IdleState) { + errorState = QAudio::UnderrunError; + deviceState = QAudio::IdleState; + emit stateChanged(deviceState); + } + } + } + if(deviceState != QAudio::ActiveState && deviceState != QAudio::IdleState) + return true; + + if(intervalTime && (timeStamp.elapsed() + elapsedTimeOffset) > intervalTime) { + emit notify(); + elapsedTimeOffset = timeStamp.elapsed() + elapsedTimeOffset - intervalTime; + timeStamp.restart(); + } + + return true; +} + +qint64 QAudioOutputPrivate::elapsedUSecs() const +{ + if (deviceState == QAudio::StoppedState) + return 0; + + return timeStampOpened.elapsed()*1000; +} + +QAudio::Error QAudioOutputPrivate::error() const +{ + return errorState; +} + +QAudio::State QAudioOutputPrivate::state() const +{ + return deviceState; +} + +void QAudioOutputPrivate::reset() +{ + close(); +} + +OutputPrivate::OutputPrivate(QAudioOutputPrivate* audio) +{ + audioDevice = qobject_cast<QAudioOutputPrivate*>(audio); +} + +OutputPrivate::~OutputPrivate() {} + +qint64 OutputPrivate::readData( char* data, qint64 len) +{ + Q_UNUSED(data) + Q_UNUSED(len) + + return 0; +} + +qint64 OutputPrivate::writeData(const char* data, qint64 len) +{ + int retry = 0; + qint64 written = 0; + + if((audioDevice->deviceState == QAudio::ActiveState) + ||(audioDevice->deviceState == QAudio::IdleState)) { + qint64 l = len; + while(written < l) { + int chunk = audioDevice->write(data+written,(l-written)); + if(chunk <= 0) + retry++; + else + written+=chunk; + + if(retry > 10) + return written; + } + audioDevice->deviceState = QAudio::ActiveState; + } + return written; +} + +QT_END_NAMESPACE |