--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/multimedia/audio/qaudioinput_symbian_p.cpp Mon May 03 13:17:34 2010 +0300
@@ -0,0 +1,594 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaudioinput_symbian_p.h"
+
+QT_BEGIN_NAMESPACE
+
+//-----------------------------------------------------------------------------
+// Constants
+//-----------------------------------------------------------------------------
+
+const int PushInterval = 50; // ms
+
+
+//-----------------------------------------------------------------------------
+// Private class
+//-----------------------------------------------------------------------------
+
+SymbianAudioInputPrivate::SymbianAudioInputPrivate(
+ QAudioInputPrivate *audioDevice)
+ : m_audioDevice(audioDevice)
+{
+
+}
+
+SymbianAudioInputPrivate::~SymbianAudioInputPrivate()
+{
+
+}
+
+qint64 SymbianAudioInputPrivate::readData(char *data, qint64 len)
+{
+ qint64 totalRead = 0;
+
+ if (m_audioDevice->state() == QAudio::ActiveState ||
+ m_audioDevice->state() == QAudio::IdleState) {
+
+ while (totalRead < len) {
+ const qint64 read = m_audioDevice->read(data + totalRead,
+ len - totalRead);
+ if (read > 0)
+ totalRead += read;
+ else
+ break;
+ }
+ }
+
+ return totalRead;
+}
+
+qint64 SymbianAudioInputPrivate::writeData(const char *data, qint64 len)
+{
+ Q_UNUSED(data)
+ Q_UNUSED(len)
+ return 0;
+}
+
+void SymbianAudioInputPrivate::dataReady()
+{
+ emit readyRead();
+}
+
+
+//-----------------------------------------------------------------------------
+// Public functions
+//-----------------------------------------------------------------------------
+
+QAudioInputPrivate::QAudioInputPrivate(const QByteArray &device,
+ const QAudioFormat &format)
+ : m_device(device)
+ , m_format(format)
+ , m_clientBufferSize(SymbianAudio::DefaultBufferSize)
+ , m_notifyInterval(SymbianAudio::DefaultNotifyInterval)
+ , m_notifyTimer(new QTimer(this))
+ , m_error(QAudio::NoError)
+ , m_internalState(SymbianAudio::ClosedState)
+ , m_externalState(QAudio::StoppedState)
+ , m_pullMode(false)
+ , m_sink(0)
+ , m_pullTimer(new QTimer(this))
+ , m_devSoundBuffer(0)
+ , m_devSoundBufferSize(0)
+ , m_totalBytesReady(0)
+ , m_devSoundBufferPos(0)
+ , m_totalSamplesRecorded(0)
+{
+ connect(m_notifyTimer.data(), SIGNAL(timeout()), this, SIGNAL(notify()));
+
+ SymbianAudio::Utils::formatQtToNative(m_format, m_nativeFourCC,
+ m_nativeFormat);
+
+ m_pullTimer->setInterval(PushInterval);
+ connect(m_pullTimer.data(), SIGNAL(timeout()), this, SLOT(pullData()));
+}
+
+QAudioInputPrivate::~QAudioInputPrivate()
+{
+ close();
+}
+
+QIODevice* QAudioInputPrivate::start(QIODevice *device)
+{
+ stop();
+
+ open();
+ if (SymbianAudio::ClosedState != m_internalState) {
+ if (device) {
+ m_pullMode = true;
+ m_sink = device;
+ } else {
+ m_sink = new SymbianAudioInputPrivate(this);
+ m_sink->open(QIODevice::ReadOnly | QIODevice::Unbuffered);
+ }
+
+ m_elapsed.restart();
+ }
+
+ return m_sink;
+}
+
+void QAudioInputPrivate::stop()
+{
+ close();
+}
+
+void QAudioInputPrivate::reset()
+{
+ m_totalSamplesRecorded += getSamplesRecorded();
+ m_devSound->Stop();
+ startRecording();
+}
+
+void QAudioInputPrivate::suspend()
+{
+ if (SymbianAudio::ActiveState == m_internalState
+ || SymbianAudio::IdleState == m_internalState) {
+ m_notifyTimer->stop();
+ m_pullTimer->stop();
+ m_devSound->Pause();
+ const qint64 samplesRecorded = getSamplesRecorded();
+ m_totalSamplesRecorded += samplesRecorded;
+
+ if (m_devSoundBuffer) {
+ m_devSoundBufferQ.append(m_devSoundBuffer);
+ m_devSoundBuffer = 0;
+ }
+
+ setState(SymbianAudio::SuspendedState);
+ }
+}
+
+void QAudioInputPrivate::resume()
+{
+ if (SymbianAudio::SuspendedState == m_internalState)
+ startDataTransfer();
+}
+
+int QAudioInputPrivate::bytesReady() const
+{
+ Q_ASSERT(m_devSoundBufferPos <= m_totalBytesReady);
+ return m_totalBytesReady - m_devSoundBufferPos;
+}
+
+int QAudioInputPrivate::periodSize() const
+{
+ return bufferSize();
+}
+
+void QAudioInputPrivate::setBufferSize(int value)
+{
+ // Note that DevSound does not allow its client to specify the buffer size.
+ // This functionality is available via custom interfaces, but since these
+ // cannot be guaranteed to work across all DevSound implementations, we
+ // do not use them here.
+ // In order to comply with the expected bevahiour of QAudioInput, we store
+ // the value and return it from bufferSize(), but the underlying DevSound
+ // buffer size remains unchanged.
+ if (value > 0)
+ m_clientBufferSize = value;
+}
+
+int QAudioInputPrivate::bufferSize() const
+{
+ return m_devSoundBufferSize ? m_devSoundBufferSize : m_clientBufferSize;
+}
+
+void QAudioInputPrivate::setNotifyInterval(int ms)
+{
+ if (ms > 0) {
+ const int oldNotifyInterval = m_notifyInterval;
+ m_notifyInterval = ms;
+ if (m_notifyTimer->isActive() && ms != oldNotifyInterval)
+ m_notifyTimer->start(m_notifyInterval);
+ }
+}
+
+int QAudioInputPrivate::notifyInterval() const
+{
+ return m_notifyInterval;
+}
+
+qint64 QAudioInputPrivate::processedUSecs() const
+{
+ int samplesPlayed = 0;
+ if (m_devSound && SymbianAudio::SuspendedState != m_internalState)
+ samplesPlayed = getSamplesRecorded();
+
+ // Protect against division by zero
+ Q_ASSERT_X(m_format.frequency() > 0, Q_FUNC_INFO, "Invalid frequency");
+
+ const qint64 result = qint64(1000000) *
+ (samplesPlayed + m_totalSamplesRecorded)
+ / m_format.frequency();
+
+ return result;
+}
+
+qint64 QAudioInputPrivate::elapsedUSecs() const
+{
+ const qint64 result = (QAudio::StoppedState == state()) ?
+ 0 : m_elapsed.elapsed() * 1000;
+ return result;
+}
+
+QAudio::Error QAudioInputPrivate::error() const
+{
+ return m_error;
+}
+
+QAudio::State QAudioInputPrivate::state() const
+{
+ return m_externalState;
+}
+
+QAudioFormat QAudioInputPrivate::format() const
+{
+ return m_format;
+}
+
+//-----------------------------------------------------------------------------
+// MDevSoundObserver implementation
+//-----------------------------------------------------------------------------
+
+void QAudioInputPrivate::InitializeComplete(TInt aError)
+{
+ Q_ASSERT_X(SymbianAudio::InitializingState == m_internalState,
+ Q_FUNC_INFO, "Invalid state");
+
+ if (KErrNone == aError)
+ startRecording();
+}
+
+void QAudioInputPrivate::ToneFinished(TInt aError)
+{
+ Q_UNUSED(aError)
+ // This class doesn't use DevSound's tone playback functions, so should
+ // never receive this callback.
+ Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioInputPrivate::BufferToBeFilled(CMMFBuffer *aBuffer)
+{
+ Q_UNUSED(aBuffer)
+ // This class doesn't use DevSound in play mode, so should never receive
+ // this callback.
+ Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioInputPrivate::PlayError(TInt aError)
+{
+ Q_UNUSED(aError)
+ // This class doesn't use DevSound in play mode, so should never receive
+ // this callback.
+ Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioInputPrivate::BufferToBeEmptied(CMMFBuffer *aBuffer)
+{
+ // Following receipt of this callback, DevSound should not provide another
+ // buffer until we have returned the current one.
+ Q_ASSERT_X(!m_devSoundBuffer, Q_FUNC_INFO, "Buffer already held");
+
+ CMMFDataBuffer *const buffer = static_cast<CMMFDataBuffer*>(aBuffer);
+
+ if (!m_devSoundBufferSize)
+ m_devSoundBufferSize = buffer->Data().MaxLength();
+
+ m_totalBytesReady += buffer->Data().Length();
+
+ if (SymbianAudio::SuspendedState == m_internalState) {
+ m_devSoundBufferQ.append(buffer);
+ } else {
+ // Will be returned to DevSound by bufferEmptied().
+ m_devSoundBuffer = buffer;
+ m_devSoundBufferPos = 0;
+
+ if (bytesReady() && !m_pullMode)
+ pushData();
+ }
+}
+
+void QAudioInputPrivate::RecordError(TInt aError)
+{
+ Q_UNUSED(aError)
+ setError(QAudio::IOError);
+}
+
+void QAudioInputPrivate::ConvertError(TInt aError)
+{
+ Q_UNUSED(aError)
+ // This class doesn't use DevSound's format conversion functions, so
+ // should never receive this callback.
+ Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioInputPrivate::DeviceMessage(TUid aMessageType, const TDesC8 &aMsg)
+{
+ Q_UNUSED(aMessageType)
+ Q_UNUSED(aMsg)
+ // Ignore this callback.
+}
+
+//-----------------------------------------------------------------------------
+// Private functions
+//-----------------------------------------------------------------------------
+
+void QAudioInputPrivate::open()
+{
+ Q_ASSERT_X(SymbianAudio::ClosedState == m_internalState,
+ Q_FUNC_INFO, "DevSound already opened");
+
+ QT_TRAP_THROWING( m_devSound.reset(CMMFDevSound::NewL()) )
+
+ QScopedPointer<SymbianAudio::DevSoundCapabilities> caps(
+ new SymbianAudio::DevSoundCapabilities(*m_devSound, QAudio::AudioInput));
+
+ int err = SymbianAudio::Utils::isFormatSupported(m_format, *caps) ?
+ KErrNone : KErrNotSupported;
+
+ if (KErrNone == err) {
+ setState(SymbianAudio::InitializingState);
+ TRAP(err, m_devSound->InitializeL(*this, m_nativeFourCC,
+ EMMFStateRecording));
+ }
+
+ if (KErrNone != err) {
+ setError(QAudio::OpenError);
+ m_devSound.reset();
+ }
+}
+
+void QAudioInputPrivate::startRecording()
+{
+ const int samplesRecorded = m_devSound->SamplesRecorded();
+ Q_ASSERT(samplesRecorded == 0);
+
+ TRAPD(err, startDevSoundL());
+ if (KErrNone == err) {
+ startDataTransfer();
+ } else {
+ setError(QAudio::OpenError);
+ close();
+ }
+}
+
+void QAudioInputPrivate::startDevSoundL()
+{
+ TMMFCapabilities nativeFormat = m_devSound->Config();
+ m_nativeFormat.iBufferSize = nativeFormat.iBufferSize;
+ m_devSound->SetConfigL(m_nativeFormat);
+ m_devSound->RecordInitL();
+}
+
+void QAudioInputPrivate::startDataTransfer()
+{
+ m_notifyTimer->start(m_notifyInterval);
+
+ if (m_pullMode)
+ m_pullTimer->start();
+
+ if (bytesReady()) {
+ setState(SymbianAudio::ActiveState);
+ if (!m_pullMode)
+ pushData();
+ } else {
+ if (SymbianAudio::SuspendedState == m_internalState)
+ setState(SymbianAudio::ActiveState);
+ else
+ setState(SymbianAudio::IdleState);
+ }
+}
+
+CMMFDataBuffer* QAudioInputPrivate::currentBuffer() const
+{
+ CMMFDataBuffer *result = m_devSoundBuffer;
+ if (!result && !m_devSoundBufferQ.empty())
+ result = m_devSoundBufferQ.front();
+ return result;
+}
+
+void QAudioInputPrivate::pushData()
+{
+ Q_ASSERT_X(bytesReady(), Q_FUNC_INFO, "No data available");
+ Q_ASSERT_X(!m_pullMode, Q_FUNC_INFO, "pushData called when in pull mode");
+ qobject_cast<SymbianAudioInputPrivate *>(m_sink)->dataReady();
+}
+
+qint64 QAudioInputPrivate::read(char *data, qint64 len)
+{
+ // SymbianAudioInputPrivate is ready to read data
+
+ Q_ASSERT_X(!m_pullMode, Q_FUNC_INFO,
+ "read called when in pull mode");
+
+ qint64 bytesRead = 0;
+
+ CMMFDataBuffer *buffer = 0;
+ while ((buffer = currentBuffer()) && (bytesRead < len)) {
+ if (SymbianAudio::IdleState == m_internalState)
+ setState(SymbianAudio::ActiveState);
+
+ TDesC8 &inputBuffer = buffer->Data();
+
+ const qint64 inputBytes = bytesReady();
+ const qint64 outputBytes = len - bytesRead;
+ const qint64 copyBytes = outputBytes < inputBytes ?
+ outputBytes : inputBytes;
+
+ memcpy(data, inputBuffer.Ptr() + m_devSoundBufferPos, copyBytes);
+
+ m_devSoundBufferPos += copyBytes;
+ data += copyBytes;
+ bytesRead += copyBytes;
+
+ if (!bytesReady())
+ bufferEmptied();
+ }
+
+ return bytesRead;
+}
+
+void QAudioInputPrivate::pullData()
+{
+ Q_ASSERT_X(m_pullMode, Q_FUNC_INFO,
+ "pullData called when in push mode");
+
+ CMMFDataBuffer *buffer = 0;
+ while (buffer = currentBuffer()) {
+ if (SymbianAudio::IdleState == m_internalState)
+ setState(SymbianAudio::ActiveState);
+
+ TDesC8 &inputBuffer = buffer->Data();
+
+ const qint64 inputBytes = bytesReady();
+ const qint64 bytesPushed = m_sink->write(
+ (char*)inputBuffer.Ptr() + m_devSoundBufferPos, inputBytes);
+
+ m_devSoundBufferPos += bytesPushed;
+
+ if (!bytesReady())
+ bufferEmptied();
+
+ if (!bytesPushed)
+ break;
+ }
+}
+
+void QAudioInputPrivate::bufferEmptied()
+{
+ m_devSoundBufferPos = 0;
+
+ if (m_devSoundBuffer) {
+ m_totalBytesReady -= m_devSoundBuffer->Data().Length();
+ m_devSoundBuffer = 0;
+ m_devSound->RecordData();
+ } else {
+ Q_ASSERT(!m_devSoundBufferQ.empty());
+ m_totalBytesReady -= m_devSoundBufferQ.front()->Data().Length();
+ m_devSoundBufferQ.erase(m_devSoundBufferQ.begin());
+
+ // If the queue has been emptied, resume transfer from the hardware
+ if (m_devSoundBufferQ.empty())
+ m_devSound->RecordInitL();
+ }
+
+ Q_ASSERT(m_totalBytesReady >= 0);
+}
+
+void QAudioInputPrivate::close()
+{
+ m_notifyTimer->stop();
+ m_pullTimer->stop();
+
+ m_error = QAudio::NoError;
+
+ if (m_devSound)
+ m_devSound->Stop();
+ m_devSound.reset();
+ m_devSoundBuffer = 0;
+ m_devSoundBufferSize = 0;
+ m_totalBytesReady = 0;
+
+ if (!m_pullMode) // m_sink is owned
+ delete m_sink;
+ m_pullMode = false;
+ m_sink = 0;
+
+ m_devSoundBufferQ.clear();
+ m_devSoundBufferPos = 0;
+ m_totalSamplesRecorded = 0;
+
+ setState(SymbianAudio::ClosedState);
+}
+
+qint64 QAudioInputPrivate::getSamplesRecorded() const
+{
+ qint64 result = 0;
+ if (m_devSound)
+ result = qint64(m_devSound->SamplesRecorded());
+ return result;
+}
+
+void QAudioInputPrivate::setError(QAudio::Error error)
+{
+ m_error = error;
+
+ // Although no state transition actually occurs here, a stateChanged event
+ // must be emitted to inform the client that the call to start() was
+ // unsuccessful.
+ if (QAudio::OpenError == error)
+ emit stateChanged(QAudio::StoppedState);
+
+ // Close the DevSound instance. This causes a transition to StoppedState.
+ // This must be done asynchronously in case the current function was called
+ // from a DevSound event handler, in which case deleting the DevSound
+ // instance may cause an exception.
+ QMetaObject::invokeMethod(this, "close", Qt::QueuedConnection);
+}
+
+void QAudioInputPrivate::setState(SymbianAudio::State newInternalState)
+{
+ const QAudio::State oldExternalState = m_externalState;
+ m_internalState = newInternalState;
+ m_externalState = SymbianAudio::Utils::stateNativeToQt(
+ m_internalState, initializingState());
+
+ if (m_externalState != oldExternalState)
+ emit stateChanged(m_externalState);
+}
+
+QAudio::State QAudioInputPrivate::initializingState() const
+{
+ return QAudio::IdleState;
+}
+
+QT_END_NAMESPACE