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Diffstat (limited to 'src/plugins/opensles/qopenslesengine.cpp')
-rw-r--r-- | src/plugins/opensles/qopenslesengine.cpp | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/plugins/opensles/qopenslesengine.cpp b/src/plugins/opensles/qopenslesengine.cpp new file mode 100644 index 000000000..056b51e26 --- /dev/null +++ b/src/plugins/opensles/qopenslesengine.cpp @@ -0,0 +1,207 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** 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 "qopenslesengine.h" + +#include "qopenslesaudioinput.h" +#include <qdebug.h> + +#ifdef ANDROID +#include <SLES/OpenSLES_Android.h> +#endif + +#define CheckError(message) if (result != SL_RESULT_SUCCESS) { qWarning(message); return; } + +Q_GLOBAL_STATIC(QOpenSLESEngine, openslesEngine); + +QOpenSLESEngine::QOpenSLESEngine() + : m_engineObject(0) + , m_engine(0) +{ + SLresult result; + + result = slCreateEngine(&m_engineObject, 0, 0, 0, 0, 0); + CheckError("Failed to create engine"); + + result = (*m_engineObject)->Realize(m_engineObject, SL_BOOLEAN_FALSE); + CheckError("Failed to realize engine"); + + result = (*m_engineObject)->GetInterface(m_engineObject, SL_IID_ENGINE, &m_engine); + CheckError("Failed to get engine interface"); + + checkSupportedInputFormats(); +} + +QOpenSLESEngine::~QOpenSLESEngine() +{ + if (m_engineObject) + (*m_engineObject)->Destroy(m_engineObject); +} + +QOpenSLESEngine *QOpenSLESEngine::instance() +{ + return openslesEngine(); +} + +SLDataFormat_PCM QOpenSLESEngine::audioFormatToSLFormatPCM(const QAudioFormat &format) +{ + SLDataFormat_PCM format_pcm; + format_pcm.formatType = SL_DATAFORMAT_PCM; + format_pcm.numChannels = format.channelCount(); + format_pcm.samplesPerSec = format.sampleRate() * 1000; + format_pcm.bitsPerSample = format.sampleSize(); + format_pcm.containerSize = format.sampleSize(); + format_pcm.channelMask = (format.channelCount() == 1 ? + SL_SPEAKER_FRONT_CENTER : + SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT); + format_pcm.endianness = (format.byteOrder() == QAudioFormat::LittleEndian ? + SL_BYTEORDER_LITTLEENDIAN : + SL_BYTEORDER_BIGENDIAN); + return format_pcm; + +} + +QList<QByteArray> QOpenSLESEngine::availableDevices(QAudio::Mode mode) const +{ + QList<QByteArray> devices; + if (mode == QAudio::AudioInput) { +#ifdef ANDROID + devices << QT_ANDROID_PRESET_MIC + << QT_ANDROID_PRESET_CAMCORDER + << QT_ANDROID_PRESET_VOICE_RECOGNITION; +#else + devices << "default"; +#endif + } else { + devices << "default"; + } + return devices; +} + +QList<int> QOpenSLESEngine::supportedChannelCounts(QAudio::Mode mode) const +{ + if (mode == QAudio::AudioInput) + return m_supportedInputChannelCounts; + else + return QList<int>() << 1 << 2; +} + +QList<int> QOpenSLESEngine::supportedSampleRates(QAudio::Mode mode) const +{ + if (mode == QAudio::AudioInput) { + return m_supportedInputSampleRates; + } else { + return QList<int>() << 8000 << 11025 << 12000 << 16000 << 22050 + << 24000 << 32000 << 44100 << 48000; + } +} + +void QOpenSLESEngine::checkSupportedInputFormats() +{ + m_supportedInputChannelCounts = QList<int>() << 1; + m_supportedInputSampleRates.clear(); + + SLDataFormat_PCM defaultFormat; + defaultFormat.formatType = SL_DATAFORMAT_PCM; + defaultFormat.numChannels = 1; + defaultFormat.samplesPerSec = SL_SAMPLINGRATE_44_1; + defaultFormat.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16; + defaultFormat.containerSize = SL_PCMSAMPLEFORMAT_FIXED_16; + defaultFormat.channelMask = SL_SPEAKER_FRONT_CENTER; + defaultFormat.endianness = SL_BYTEORDER_LITTLEENDIAN; + + const SLuint32 rates[9] = { SL_SAMPLINGRATE_8, + SL_SAMPLINGRATE_11_025, + SL_SAMPLINGRATE_12, + SL_SAMPLINGRATE_16, + SL_SAMPLINGRATE_22_05, + SL_SAMPLINGRATE_24, + SL_SAMPLINGRATE_32, + SL_SAMPLINGRATE_44_1, + SL_SAMPLINGRATE_48 }; + + + // Test sampling rates + for (int i = 0 ; i < 9; ++i) { + SLDataFormat_PCM format = defaultFormat; + format.samplesPerSec = rates[i]; + + if (inputFormatIsSupported(format)) + m_supportedInputSampleRates.append(rates[i] / 1000); + + } + + // Test if stereo is supported + { + SLDataFormat_PCM format = defaultFormat; + format.numChannels = 2; + format.channelMask = 0; + if (inputFormatIsSupported(format)) + m_supportedInputChannelCounts.append(2); + } +} + +bool QOpenSLESEngine::inputFormatIsSupported(SLDataFormat_PCM format) +{ + SLresult result; + SLObjectItf recorder = 0; + SLDataLocator_IODevice loc_dev = { SL_DATALOCATOR_IODEVICE, SL_IODEVICE_AUDIOINPUT, + SL_DEFAULTDEVICEID_AUDIOINPUT, NULL }; + SLDataSource audioSrc = { &loc_dev, NULL }; + +#ifdef ANDROID + SLDataLocator_AndroidSimpleBufferQueue loc_bq = { SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, 1 }; +#else + SLDataLocator_BufferQueue loc_bq = { SL_DATALOCATOR_BUFFERQUEUE, 1 }; +#endif + SLDataSink audioSnk = { &loc_bq, &format }; + + result = (*m_engine)->CreateAudioRecorder(m_engine, &recorder, &audioSrc, &audioSnk, 0, 0, 0); + if (result == SL_RESULT_SUCCESS) + result = (*recorder)->Realize(recorder, false); + + if (result == SL_RESULT_SUCCESS) { + (*recorder)->Destroy(recorder); + return true; + } + + return false; +} |