diff options
Diffstat (limited to 'src/plugins/qnx-audio/audio/qnxaudioinput.cpp')
-rw-r--r-- | src/plugins/qnx-audio/audio/qnxaudioinput.cpp | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/src/plugins/qnx-audio/audio/qnxaudioinput.cpp b/src/plugins/qnx-audio/audio/qnxaudioinput.cpp new file mode 100644 index 000000000..eb8064598 --- /dev/null +++ b/src/plugins/qnx-audio/audio/qnxaudioinput.cpp @@ -0,0 +1,447 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Research In Motion +** Contact: http://www.qt-project.org/legal +** +** 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 +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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() +{ + if (m_pcmNotifier) + m_pcmNotifier->setEnabled(false); + + setState(QAudio::SuspendedState); +} + +void QnxAudioInput::resume() +{ + 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() * 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_DISABLE_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(int)), SLOT(userFeed())); + + return true; +} + +void QnxAudioInput::close() +{ + if (m_pcmHandle) + snd_pcm_plugin_flush(m_pcmHandle, SND_PCM_CHANNEL_CAPTURE); + + 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 |