1 files changed, 207 insertions, 0 deletions
diff --git a/src/plugins/opensles/qopenslesengine.cpp b/src/plugins/opensles/qopenslesengine.cpp
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+++ b/src/plugins/opensles/qopenslesengine.cpp
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+/****************************************************************************
+**
+** 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;
+}