--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/multimedia/audio/qaudio_symbian_p.cpp Mon May 03 13:17:34 2010 +0300
@@ -0,0 +1,395 @@
+/****************************************************************************
+**
+** 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 "qaudio_symbian_p.h"
+#include <mmffourcc.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace SymbianAudio {
+
+DevSoundCapabilities::DevSoundCapabilities(CMMFDevSound &devsound,
+ QAudio::Mode mode)
+{
+ QT_TRAP_THROWING(constructL(devsound, mode));
+}
+
+DevSoundCapabilities::~DevSoundCapabilities()
+{
+ m_fourCC.Close();
+}
+
+void DevSoundCapabilities::constructL(CMMFDevSound &devsound,
+ QAudio::Mode mode)
+{
+ m_caps = devsound.Capabilities();
+
+ TMMFPrioritySettings settings;
+
+ switch (mode) {
+ case QAudio::AudioOutput:
+ settings.iState = EMMFStatePlaying;
+ devsound.GetSupportedInputDataTypesL(m_fourCC, settings);
+ break;
+
+ case QAudio::AudioInput:
+ settings.iState = EMMFStateRecording;
+ devsound.GetSupportedInputDataTypesL(m_fourCC, settings);
+ break;
+
+ default:
+ Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid mode");
+ }
+}
+
+namespace Utils {
+
+//-----------------------------------------------------------------------------
+// Static data
+//-----------------------------------------------------------------------------
+
+// Sample rate / frequency
+
+typedef TMMFSampleRate SampleRateNative;
+typedef int SampleRateQt;
+
+const int SampleRateCount = 12;
+
+const SampleRateNative SampleRateListNative[SampleRateCount] = {
+ EMMFSampleRate8000Hz
+ , EMMFSampleRate11025Hz
+ , EMMFSampleRate12000Hz
+ , EMMFSampleRate16000Hz
+ , EMMFSampleRate22050Hz
+ , EMMFSampleRate24000Hz
+ , EMMFSampleRate32000Hz
+ , EMMFSampleRate44100Hz
+ , EMMFSampleRate48000Hz
+ , EMMFSampleRate64000Hz
+ , EMMFSampleRate88200Hz
+ , EMMFSampleRate96000Hz
+};
+
+const SampleRateQt SampleRateListQt[SampleRateCount] = {
+ 8000
+ , 11025
+ , 12000
+ , 16000
+ , 22050
+ , 24000
+ , 32000
+ , 44100
+ , 48000
+ , 64000
+ , 88200
+ , 96000
+};
+
+// Channels
+
+typedef TMMFMonoStereo ChannelsNative;
+typedef int ChannelsQt;
+
+const int ChannelsCount = 2;
+
+const ChannelsNative ChannelsListNative[ChannelsCount] = {
+ EMMFMono
+ , EMMFStereo
+};
+
+const ChannelsQt ChannelsListQt[ChannelsCount] = {
+ 1
+ , 2
+};
+
+// Encoding
+
+const int EncodingCount = 6;
+
+const TUint32 EncodingFourCC[EncodingCount] = {
+ KMMFFourCCCodePCM8 // 0
+ , KMMFFourCCCodePCMU8 // 1
+ , KMMFFourCCCodePCM16 // 2
+ , KMMFFourCCCodePCMU16 // 3
+ , KMMFFourCCCodePCM16B // 4
+ , KMMFFourCCCodePCMU16B // 5
+};
+
+// The characterised DevSound API specification states that the iEncoding
+// field in TMMFCapabilities is ignored, and that the FourCC should be used
+// to specify the PCM encoding.
+// See "SGL.GT0287.102 Multimedia DevSound Baseline Compatibility.doc" in the
+// mm_info/mm_docs repository.
+const TMMFSoundEncoding EncodingNative[EncodingCount] = {
+ EMMFSoundEncoding16BitPCM // 0
+ , EMMFSoundEncoding16BitPCM // 1
+ , EMMFSoundEncoding16BitPCM // 2
+ , EMMFSoundEncoding16BitPCM // 3
+ , EMMFSoundEncoding16BitPCM // 4
+ , EMMFSoundEncoding16BitPCM // 5
+};
+
+
+const int EncodingSampleSize[EncodingCount] = {
+ 8 // 0
+ , 8 // 1
+ , 16 // 2
+ , 16 // 3
+ , 16 // 4
+ , 16 // 5
+};
+
+const QAudioFormat::Endian EncodingByteOrder[EncodingCount] = {
+ QAudioFormat::LittleEndian // 0
+ , QAudioFormat::LittleEndian // 1
+ , QAudioFormat::LittleEndian // 2
+ , QAudioFormat::LittleEndian // 3
+ , QAudioFormat::BigEndian // 4
+ , QAudioFormat::BigEndian // 5
+};
+
+const QAudioFormat::SampleType EncodingSampleType[EncodingCount] = {
+ QAudioFormat::SignedInt // 0
+ , QAudioFormat::UnSignedInt // 1
+ , QAudioFormat::SignedInt // 2
+ , QAudioFormat::UnSignedInt // 3
+ , QAudioFormat::SignedInt // 4
+ , QAudioFormat::UnSignedInt // 5
+};
+
+
+//-----------------------------------------------------------------------------
+// Private functions
+//-----------------------------------------------------------------------------
+
+// Helper functions for implementing parameter conversions
+
+template<typename Input>
+bool findValue(const Input *inputArray, int length, Input input, int &index) {
+ bool result = false;
+ for (int i=0; !result && i<length; ++i)
+ if (inputArray[i] == input) {
+ index = i;
+ result = true;
+ }
+ return result;
+}
+
+template<typename Input, typename Output>
+bool convertValue(const Input *inputArray, const Output *outputArray,
+ int length, Input input, Output &output) {
+ int index;
+ const bool result = findValue<Input>(inputArray, length, input, index);
+ if (result)
+ output = outputArray[index];
+ return result;
+}
+
+/**
+ * Macro which is used to generate the implementation of the conversion
+ * functions. The implementation is just a wrapper around the templated
+ * convertValue function, e.g.
+ *
+ * CONVERSION_FUNCTION_IMPL(SampleRate, Qt, Native)
+ *
+ * expands to
+ *
+ * bool SampleRateQtToNative(int input, TMMFSampleRate &output) {
+ * return convertValue<SampleRateQt, SampleRateNative>
+ * (SampleRateListQt, SampleRateListNative, SampleRateCount,
+ * input, output);
+ * }
+ */
+#define CONVERSION_FUNCTION_IMPL(FieldLc, Field, Input, Output) \
+bool FieldLc##Input##To##Output(Field##Input input, Field##Output &output) { \
+ return convertValue<Field##Input, Field##Output>(Field##List##Input, \
+ Field##List##Output, Field##Count, input, output); \
+}
+
+//-----------------------------------------------------------------------------
+// Local helper functions
+//-----------------------------------------------------------------------------
+
+CONVERSION_FUNCTION_IMPL(sampleRate, SampleRate, Qt, Native)
+CONVERSION_FUNCTION_IMPL(sampleRate, SampleRate, Native, Qt)
+CONVERSION_FUNCTION_IMPL(channels, Channels, Qt, Native)
+CONVERSION_FUNCTION_IMPL(channels, Channels, Native, Qt)
+
+bool sampleInfoQtToNative(int inputSampleSize,
+ QAudioFormat::Endian inputByteOrder,
+ QAudioFormat::SampleType inputSampleType,
+ TUint32 &outputFourCC,
+ TMMFSoundEncoding &outputEncoding) {
+
+ bool found = false;
+
+ for (int i=0; i<EncodingCount && !found; ++i) {
+ if ( EncodingSampleSize[i] == inputSampleSize
+ && EncodingByteOrder[i] == inputByteOrder
+ && EncodingSampleType[i] == inputSampleType) {
+ outputFourCC = EncodingFourCC[i];
+ outputEncoding = EncodingNative[i]; // EMMFSoundEncoding16BitPCM
+ found = true;
+ }
+ }
+
+ return found;
+}
+
+//-----------------------------------------------------------------------------
+// Public functions
+//-----------------------------------------------------------------------------
+
+void capabilitiesNativeToQt(const DevSoundCapabilities &caps,
+ QList<int> &frequencies,
+ QList<int> &channels,
+ QList<int> &sampleSizes,
+ QList<QAudioFormat::Endian> &byteOrders,
+ QList<QAudioFormat::SampleType> &sampleTypes) {
+
+ frequencies.clear();
+ sampleSizes.clear();
+ byteOrders.clear();
+ sampleTypes.clear();
+ channels.clear();
+
+ for (int i=0; i<SampleRateCount; ++i)
+ if (caps.caps().iRate & SampleRateListNative[i])
+ frequencies += SampleRateListQt[i];
+
+ for (int i=0; i<ChannelsCount; ++i)
+ if (caps.caps().iChannels & ChannelsListNative[i])
+ channels += ChannelsListQt[i];
+
+ for (int i=0; i<EncodingCount; ++i) {
+ if (caps.fourCC().Find(EncodingFourCC[i]) != KErrNotFound) {
+ sampleSizes += EncodingSampleSize[i];
+ byteOrders += EncodingByteOrder[i];
+ sampleTypes += EncodingSampleType[i];
+ }
+ }
+
+}
+
+bool isFormatSupported(const QAudioFormat &formatQt,
+ const DevSoundCapabilities &caps) {
+ TMMFCapabilities formatNative;
+ TUint32 fourCC;
+
+ bool result = false;
+ if (formatQt.codec() == "audio/pcm" &&
+ formatQtToNative(formatQt, fourCC, formatNative)) {
+ result =
+ (formatNative.iRate & caps.caps().iRate)
+ && (formatNative.iChannels & caps.caps().iChannels)
+ && (caps.fourCC().Find(fourCC) != KErrNotFound);
+ }
+ return result;
+}
+
+bool formatQtToNative(const QAudioFormat &inputFormat,
+ TUint32 &outputFourCC,
+ TMMFCapabilities &outputFormat) {
+
+ bool result = false;
+
+ // Need to use temporary variables because TMMFCapabilities fields are all
+ // TInt, rather than MMF enumerated types.
+ TMMFSampleRate outputSampleRate;
+ TMMFMonoStereo outputChannels;
+ TMMFSoundEncoding outputEncoding;
+
+ if (inputFormat.codec() == "audio/pcm") {
+ result =
+ sampleRateQtToNative(inputFormat.frequency(), outputSampleRate)
+ && channelsQtToNative(inputFormat.channels(), outputChannels)
+ && sampleInfoQtToNative(inputFormat.sampleSize(),
+ inputFormat.byteOrder(),
+ inputFormat.sampleType(),
+ outputFourCC,
+ outputEncoding);
+ }
+
+ if (result) {
+ outputFormat.iRate = outputSampleRate;
+ outputFormat.iChannels = outputChannels;
+ outputFormat.iEncoding = outputEncoding;
+ }
+
+ return result;
+}
+
+QAudio::State stateNativeToQt(State nativeState,
+ QAudio::State initializingState)
+{
+ switch (nativeState) {
+ case ClosedState:
+ return QAudio::StoppedState;
+ case InitializingState:
+ return initializingState;
+ case ActiveState:
+ return QAudio::ActiveState;
+ case IdleState:
+ return QAudio::IdleState;
+ case SuspendedState:
+ return QAudio::SuspendedState;
+ default:
+ Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid state");
+ return QAudio::StoppedState; // suppress compiler warning
+ }
+}
+
+qint64 bytesToSamples(const QAudioFormat &format, qint64 length)
+{
+ return length / ((format.sampleSize() / 8) * format.channels());
+}
+
+qint64 samplesToBytes(const QAudioFormat &format, qint64 samples)
+{
+ return samples * (format.sampleSize() / 8) * format.channels();
+}
+
+} // namespace Utils
+} // namespace SymbianAudio
+
+QT_END_NAMESPACE
+
+