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Diffstat (limited to 'src/multimedia/audio/qaudio_symbian_p.cpp')
| -rw-r--r-- | src/multimedia/audio/qaudio_symbian_p.cpp | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/src/multimedia/audio/qaudio_symbian_p.cpp b/src/multimedia/audio/qaudio_symbian_p.cpp new file mode 100644 index 0000000..58e3745 --- /dev/null +++ b/src/multimedia/audio/qaudio_symbian_p.cpp @@ -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 + + |