| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 Research In Motion |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
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| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qnxaudioinput.h" |
| |
| #include "qnxaudioutils.h" |
| |
| #include <private/qaudiohelpers_p.h> |
| |
| #include <QDebug> |
| |
| QT_BEGIN_NAMESPACE |
| |
| QnxAudioInput::QnxAudioInput() |
| : m_audioSource(0) |
| , m_pcmHandle(0) |
| , m_pcmNotifier(0) |
| , m_error(QAudio::NoError) |
| , m_state(QAudio::StoppedState) |
| , m_bytesRead(0) |
| , m_elapsedTimeOffset(0) |
| , m_totalTimeValue(0) |
| , m_volume(qreal(1.0f)) |
| , m_bytesAvailable(0) |
| , m_bufferSize(0) |
| , m_periodSize(0) |
| , m_intervalTime(1000) |
| , m_pullMode(true) |
| { |
| } |
| |
| QnxAudioInput::~QnxAudioInput() |
| { |
| close(); |
| } |
| |
| void QnxAudioInput::start(QIODevice *device) |
| { |
| if (m_state != QAudio::StoppedState) |
| close(); |
| |
| if (!m_pullMode && m_audioSource) |
| delete m_audioSource; |
| |
| m_pullMode = true; |
| m_audioSource = device; |
| |
| if (open()) { |
| setError(QAudio::NoError); |
| setState(QAudio::ActiveState); |
| } else { |
| setError(QAudio::OpenError); |
| setState(QAudio::StoppedState); |
| } |
| } |
| |
| QIODevice *QnxAudioInput::start() |
| { |
| if (m_state != QAudio::StoppedState) |
| close(); |
| |
| if (!m_pullMode && m_audioSource) |
| delete m_audioSource; |
| |
| m_pullMode = false; |
| m_audioSource = new InputPrivate(this); |
| m_audioSource->open(QIODevice::ReadOnly | QIODevice::Unbuffered); |
| |
| if (open()) { |
| setError(QAudio::NoError); |
| setState(QAudio::IdleState); |
| } else { |
| delete m_audioSource; |
| m_audioSource = 0; |
| |
| setError(QAudio::OpenError); |
| setState(QAudio::StoppedState); |
| } |
| |
| return m_audioSource; |
| } |
| |
| void QnxAudioInput::stop() |
| { |
| if (m_state == QAudio::StoppedState) |
| return; |
| |
| setError(QAudio::NoError); |
| setState(QAudio::StoppedState); |
| close(); |
| } |
| |
| void QnxAudioInput::reset() |
| { |
| stop(); |
| m_bytesAvailable = 0; |
| } |
| |
| void QnxAudioInput::suspend() |
| { |
| snd_pcm_capture_pause(m_pcmHandle); |
| |
| if (m_pcmNotifier) |
| m_pcmNotifier->setEnabled(false); |
| |
| setState(QAudio::SuspendedState); |
| } |
| |
| void QnxAudioInput::resume() |
| { |
| snd_pcm_capture_resume(m_pcmHandle); |
| |
| if (m_pcmNotifier) |
| m_pcmNotifier->setEnabled(true); |
| |
| if (m_pullMode) { |
| setState(QAudio::ActiveState); |
| } else { |
| setState(QAudio::IdleState); |
| } |
| } |
| |
| int QnxAudioInput::bytesReady() const |
| { |
| return qMax(m_bytesAvailable, 0); |
| } |
| |
| int QnxAudioInput::periodSize() const |
| { |
| return m_periodSize; |
| } |
| |
| void QnxAudioInput::setBufferSize(int bufferSize) |
| { |
| m_bufferSize = bufferSize; |
| } |
| |
| int QnxAudioInput::bufferSize() const |
| { |
| return m_bufferSize; |
| } |
| |
| void QnxAudioInput::setNotifyInterval(int milliSeconds) |
| { |
| m_intervalTime = qMax(0, milliSeconds); |
| } |
| |
| int QnxAudioInput::notifyInterval() const |
| { |
| return m_intervalTime; |
| } |
| |
| qint64 QnxAudioInput::processedUSecs() const |
| { |
| return qint64(1000000) * m_format.framesForBytes(m_bytesRead) / m_format.sampleRate(); |
| } |
| |
| qint64 QnxAudioInput::elapsedUSecs() const |
| { |
| if (m_state == QAudio::StoppedState) |
| return 0; |
| |
| return m_clockStamp.elapsed() * qint64(1000); |
| } |
| |
| QAudio::Error QnxAudioInput::error() const |
| { |
| return m_error; |
| } |
| |
| QAudio::State QnxAudioInput::state() const |
| { |
| return m_state; |
| } |
| |
| void QnxAudioInput::setFormat(const QAudioFormat &format) |
| { |
| if (m_state == QAudio::StoppedState) |
| m_format = format; |
| } |
| |
| QAudioFormat QnxAudioInput::format() const |
| { |
| return m_format; |
| } |
| |
| void QnxAudioInput::setVolume(qreal volume) |
| { |
| m_volume = qBound(qreal(0.0), volume, qreal(1.0)); |
| } |
| |
| qreal QnxAudioInput::volume() const |
| { |
| return m_volume; |
| } |
| |
| void QnxAudioInput::userFeed() |
| { |
| if (m_state == QAudio::StoppedState || m_state == QAudio::SuspendedState) |
| return; |
| |
| deviceReady(); |
| } |
| |
| bool QnxAudioInput::deviceReady() |
| { |
| if (m_pullMode) { |
| // reads some audio data and writes it to QIODevice |
| read(0, 0); |
| } else { |
| m_bytesAvailable = m_periodSize; |
| |
| // emits readyRead() so user will call read() on QIODevice to get some audio data |
| if (m_audioSource != 0) { |
| InputPrivate *input = qobject_cast<InputPrivate*>(m_audioSource); |
| input->trigger(); |
| } |
| } |
| |
| if (m_state != QAudio::ActiveState) |
| return true; |
| |
| if (m_intervalTime && (m_timeStamp.elapsed() + m_elapsedTimeOffset) > m_intervalTime) { |
| emit notify(); |
| m_elapsedTimeOffset = m_timeStamp.elapsed() + m_elapsedTimeOffset - m_intervalTime; |
| m_timeStamp.restart(); |
| } |
| |
| return true; |
| } |
| |
| bool QnxAudioInput::open() |
| { |
| if (!m_format.isValid() || m_format.sampleRate() <= 0) { |
| if (!m_format.isValid()) |
| qWarning("QnxAudioInput: open error, invalid format."); |
| else |
| qWarning("QnxAudioInput: open error, invalid sample rate (%d).", m_format.sampleRate()); |
| |
| return false; |
| } |
| |
| int errorCode = 0; |
| |
| int card = 0; |
| int device = 0; |
| if ((errorCode = snd_pcm_open_preferred(&m_pcmHandle, &card, &device, SND_PCM_OPEN_CAPTURE)) < 0) { |
| qWarning("QnxAudioInput: open error, couldn't open card (0x%x)", -errorCode); |
| return false; |
| } |
| |
| // Necessary so that bytesFree() which uses the "free" member of the status struct works |
| snd_pcm_plugin_set_disable(m_pcmHandle, PLUGIN_MMAP); |
| |
| snd_pcm_channel_info_t info; |
| memset(&info, 0, sizeof(info)); |
| info.channel = SND_PCM_CHANNEL_CAPTURE; |
| if ((errorCode = snd_pcm_plugin_info(m_pcmHandle, &info)) < 0) { |
| qWarning("QnxAudioInput: open error, couldn't get channel info (0x%x)", -errorCode); |
| close(); |
| return false; |
| } |
| |
| snd_pcm_channel_params_t params = QnxAudioUtils::formatToChannelParams(m_format, QAudio::AudioInput, info.max_fragment_size); |
| |
| if ((errorCode = snd_pcm_plugin_params(m_pcmHandle, ¶ms)) < 0) { |
| qWarning("QnxAudioInput: open error, couldn't set channel params (0x%x)", -errorCode); |
| close(); |
| return false; |
| } |
| |
| if ((errorCode = snd_pcm_plugin_prepare(m_pcmHandle, SND_PCM_CHANNEL_CAPTURE)) < 0) { |
| qWarning("QnxAudioInput: open error, couldn't prepare channel (0x%x)", -errorCode); |
| close(); |
| return false; |
| } |
| |
| snd_pcm_channel_setup_t setup; |
| |
| memset(&setup, 0, sizeof(setup)); |
| setup.channel = SND_PCM_CHANNEL_CAPTURE; |
| if ((errorCode = snd_pcm_plugin_setup(m_pcmHandle, &setup)) < 0) { |
| qWarning("QnxAudioInput: open error, couldn't get channel setup (0x%x)", -errorCode); |
| close(); |
| return false; |
| } |
| |
| m_periodSize = qMin(2048, setup.buf.block.frag_size); |
| |
| m_clockStamp.restart(); |
| m_timeStamp.restart(); |
| m_elapsedTimeOffset = 0; |
| m_totalTimeValue = 0; |
| m_bytesRead = 0; |
| |
| m_pcmNotifier = new QSocketNotifier(snd_pcm_file_descriptor(m_pcmHandle, SND_PCM_CHANNEL_CAPTURE), |
| QSocketNotifier::Read, this); |
| connect(m_pcmNotifier, SIGNAL(activated(QSocketDescriptor)), SLOT(userFeed())); |
| |
| return true; |
| } |
| |
| void QnxAudioInput::close() |
| { |
| if (m_pcmHandle) |
| #if SND_PCM_VERSION < SND_PROTOCOL_VERSION('P',3,0,2) |
| snd_pcm_plugin_flush(m_pcmHandle, SND_PCM_CHANNEL_CAPTURE); |
| #else |
| snd_pcm_plugin_drop(m_pcmHandle, SND_PCM_CHANNEL_CAPTURE); |
| #endif |
| |
| if (m_pcmNotifier) { |
| delete m_pcmNotifier; |
| m_pcmNotifier = 0; |
| } |
| |
| if (m_pcmHandle) { |
| snd_pcm_close(m_pcmHandle); |
| m_pcmHandle = 0; |
| } |
| |
| if (!m_pullMode && m_audioSource) { |
| delete m_audioSource; |
| m_audioSource = 0; |
| } |
| } |
| |
| qint64 QnxAudioInput::read(char *data, qint64 len) |
| { |
| int errorCode = 0; |
| QByteArray tempBuffer(m_periodSize, 0); |
| |
| const int actualRead = snd_pcm_plugin_read(m_pcmHandle, tempBuffer.data(), m_periodSize); |
| if (actualRead < 1) { |
| snd_pcm_channel_status_t status; |
| memset(&status, 0, sizeof(status)); |
| status.channel = SND_PCM_CHANNEL_CAPTURE; |
| if ((errorCode = snd_pcm_plugin_status(m_pcmHandle, &status)) < 0) { |
| qWarning("QnxAudioInput: read error, couldn't get plugin status (0x%x)", -errorCode); |
| close(); |
| setError(QAudio::FatalError); |
| setState(QAudio::StoppedState); |
| return -1; |
| } |
| |
| if (status.status == SND_PCM_STATUS_READY |
| || status.status == SND_PCM_STATUS_OVERRUN) { |
| if ((errorCode = snd_pcm_plugin_prepare(m_pcmHandle, SND_PCM_CHANNEL_CAPTURE)) < 0) { |
| qWarning("QnxAudioInput: read error, couldn't prepare plugin (0x%x)", -errorCode); |
| close(); |
| setError(QAudio::FatalError); |
| setState(QAudio::StoppedState); |
| return -1; |
| } |
| } |
| } else { |
| setError(QAudio::NoError); |
| setState(QAudio::ActiveState); |
| } |
| |
| if (m_volume < 1.0f) |
| QAudioHelperInternal::qMultiplySamples(m_volume, m_format, tempBuffer.data(), tempBuffer.data(), actualRead); |
| |
| m_bytesRead += actualRead; |
| |
| if (m_pullMode) { |
| m_audioSource->write(tempBuffer.data(), actualRead); |
| } else { |
| memcpy(data, tempBuffer.data(), qMin(static_cast<qint64>(actualRead), len)); |
| } |
| |
| m_bytesAvailable = 0; |
| |
| return actualRead; |
| } |
| |
| void QnxAudioInput::setError(QAudio::Error error) |
| { |
| if (m_error == error) |
| return; |
| |
| m_error = error; |
| emit errorChanged(m_error); |
| } |
| |
| void QnxAudioInput::setState(QAudio::State state) |
| { |
| if (m_state == state) |
| return; |
| |
| m_state = state; |
| emit stateChanged(m_state); |
| } |
| |
| InputPrivate::InputPrivate(QnxAudioInput *audio) |
| : m_audioDevice(audio) |
| { |
| } |
| |
| qint64 InputPrivate::readData(char *data, qint64 len) |
| { |
| return m_audioDevice->read(data, len); |
| } |
| |
| qint64 InputPrivate::writeData(const char *data, qint64 len) |
| { |
| Q_UNUSED(data) |
| Q_UNUSED(len) |
| return 0; |
| } |
| |
| void InputPrivate::trigger() |
| { |
| emit readyRead(); |
| } |
| |
| QT_END_NAMESPACE |