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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtMultimedia module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qaudio_symbian_p.h" |
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43 #include <mmffourcc.h> |
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44 |
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45 QT_BEGIN_NAMESPACE |
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46 |
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47 namespace SymbianAudio { |
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48 |
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49 DevSoundCapabilities::DevSoundCapabilities(CMMFDevSound &devsound, |
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50 QAudio::Mode mode) |
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51 { |
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52 QT_TRAP_THROWING(constructL(devsound, mode)); |
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53 } |
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54 |
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55 DevSoundCapabilities::~DevSoundCapabilities() |
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56 { |
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57 m_fourCC.Close(); |
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58 } |
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59 |
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60 void DevSoundCapabilities::constructL(CMMFDevSound &devsound, |
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61 QAudio::Mode mode) |
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62 { |
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63 m_caps = devsound.Capabilities(); |
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64 |
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65 TMMFPrioritySettings settings; |
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66 |
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67 switch (mode) { |
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68 case QAudio::AudioOutput: |
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69 settings.iState = EMMFStatePlaying; |
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70 devsound.GetSupportedInputDataTypesL(m_fourCC, settings); |
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71 break; |
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72 |
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73 case QAudio::AudioInput: |
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74 settings.iState = EMMFStateRecording; |
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75 devsound.GetSupportedInputDataTypesL(m_fourCC, settings); |
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76 break; |
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77 |
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78 default: |
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79 Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid mode"); |
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80 } |
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81 } |
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82 |
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83 namespace Utils { |
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84 |
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85 //----------------------------------------------------------------------------- |
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86 // Static data |
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87 //----------------------------------------------------------------------------- |
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88 |
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89 // Sample rate / frequency |
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90 |
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91 typedef TMMFSampleRate SampleRateNative; |
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92 typedef int SampleRateQt; |
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93 |
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94 const int SampleRateCount = 12; |
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95 |
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96 const SampleRateNative SampleRateListNative[SampleRateCount] = { |
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97 EMMFSampleRate8000Hz |
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98 , EMMFSampleRate11025Hz |
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99 , EMMFSampleRate12000Hz |
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100 , EMMFSampleRate16000Hz |
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101 , EMMFSampleRate22050Hz |
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102 , EMMFSampleRate24000Hz |
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103 , EMMFSampleRate32000Hz |
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104 , EMMFSampleRate44100Hz |
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105 , EMMFSampleRate48000Hz |
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106 , EMMFSampleRate64000Hz |
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107 , EMMFSampleRate88200Hz |
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108 , EMMFSampleRate96000Hz |
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109 }; |
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110 |
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111 const SampleRateQt SampleRateListQt[SampleRateCount] = { |
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112 8000 |
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113 , 11025 |
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114 , 12000 |
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115 , 16000 |
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116 , 22050 |
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117 , 24000 |
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118 , 32000 |
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119 , 44100 |
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120 , 48000 |
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121 , 64000 |
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122 , 88200 |
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123 , 96000 |
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124 }; |
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125 |
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126 // Channels |
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127 |
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128 typedef TMMFMonoStereo ChannelsNative; |
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129 typedef int ChannelsQt; |
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130 |
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131 const int ChannelsCount = 2; |
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132 |
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133 const ChannelsNative ChannelsListNative[ChannelsCount] = { |
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134 EMMFMono |
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135 , EMMFStereo |
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136 }; |
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137 |
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138 const ChannelsQt ChannelsListQt[ChannelsCount] = { |
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139 1 |
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140 , 2 |
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141 }; |
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142 |
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143 // Encoding |
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144 |
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145 const int EncodingCount = 6; |
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146 |
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147 const TUint32 EncodingFourCC[EncodingCount] = { |
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148 KMMFFourCCCodePCM8 // 0 |
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149 , KMMFFourCCCodePCMU8 // 1 |
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150 , KMMFFourCCCodePCM16 // 2 |
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151 , KMMFFourCCCodePCMU16 // 3 |
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152 , KMMFFourCCCodePCM16B // 4 |
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153 , KMMFFourCCCodePCMU16B // 5 |
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154 }; |
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155 |
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156 // The characterised DevSound API specification states that the iEncoding |
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157 // field in TMMFCapabilities is ignored, and that the FourCC should be used |
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158 // to specify the PCM encoding. |
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159 // See "SGL.GT0287.102 Multimedia DevSound Baseline Compatibility.doc" in the |
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160 // mm_info/mm_docs repository. |
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161 const TMMFSoundEncoding EncodingNative[EncodingCount] = { |
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162 EMMFSoundEncoding16BitPCM // 0 |
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163 , EMMFSoundEncoding16BitPCM // 1 |
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164 , EMMFSoundEncoding16BitPCM // 2 |
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165 , EMMFSoundEncoding16BitPCM // 3 |
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166 , EMMFSoundEncoding16BitPCM // 4 |
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167 , EMMFSoundEncoding16BitPCM // 5 |
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168 }; |
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169 |
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170 |
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171 const int EncodingSampleSize[EncodingCount] = { |
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172 8 // 0 |
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173 , 8 // 1 |
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174 , 16 // 2 |
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175 , 16 // 3 |
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176 , 16 // 4 |
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177 , 16 // 5 |
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178 }; |
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179 |
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180 const QAudioFormat::Endian EncodingByteOrder[EncodingCount] = { |
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181 QAudioFormat::LittleEndian // 0 |
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182 , QAudioFormat::LittleEndian // 1 |
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183 , QAudioFormat::LittleEndian // 2 |
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184 , QAudioFormat::LittleEndian // 3 |
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185 , QAudioFormat::BigEndian // 4 |
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186 , QAudioFormat::BigEndian // 5 |
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187 }; |
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188 |
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189 const QAudioFormat::SampleType EncodingSampleType[EncodingCount] = { |
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190 QAudioFormat::SignedInt // 0 |
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191 , QAudioFormat::UnSignedInt // 1 |
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192 , QAudioFormat::SignedInt // 2 |
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193 , QAudioFormat::UnSignedInt // 3 |
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194 , QAudioFormat::SignedInt // 4 |
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195 , QAudioFormat::UnSignedInt // 5 |
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196 }; |
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197 |
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198 |
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199 //----------------------------------------------------------------------------- |
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200 // Private functions |
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201 //----------------------------------------------------------------------------- |
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202 |
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203 // Helper functions for implementing parameter conversions |
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204 |
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205 template<typename Input> |
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206 bool findValue(const Input *inputArray, int length, Input input, int &index) { |
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207 bool result = false; |
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208 for (int i=0; !result && i<length; ++i) |
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209 if (inputArray[i] == input) { |
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210 index = i; |
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211 result = true; |
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212 } |
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213 return result; |
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214 } |
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215 |
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216 template<typename Input, typename Output> |
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217 bool convertValue(const Input *inputArray, const Output *outputArray, |
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218 int length, Input input, Output &output) { |
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219 int index; |
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220 const bool result = findValue<Input>(inputArray, length, input, index); |
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221 if (result) |
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222 output = outputArray[index]; |
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223 return result; |
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224 } |
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225 |
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226 /** |
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227 * Macro which is used to generate the implementation of the conversion |
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228 * functions. The implementation is just a wrapper around the templated |
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229 * convertValue function, e.g. |
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230 * |
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231 * CONVERSION_FUNCTION_IMPL(SampleRate, Qt, Native) |
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232 * |
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233 * expands to |
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234 * |
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235 * bool SampleRateQtToNative(int input, TMMFSampleRate &output) { |
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236 * return convertValue<SampleRateQt, SampleRateNative> |
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237 * (SampleRateListQt, SampleRateListNative, SampleRateCount, |
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238 * input, output); |
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239 * } |
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240 */ |
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241 #define CONVERSION_FUNCTION_IMPL(FieldLc, Field, Input, Output) \ |
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242 bool FieldLc##Input##To##Output(Field##Input input, Field##Output &output) { \ |
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243 return convertValue<Field##Input, Field##Output>(Field##List##Input, \ |
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244 Field##List##Output, Field##Count, input, output); \ |
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245 } |
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246 |
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247 //----------------------------------------------------------------------------- |
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248 // Local helper functions |
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249 //----------------------------------------------------------------------------- |
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250 |
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251 CONVERSION_FUNCTION_IMPL(sampleRate, SampleRate, Qt, Native) |
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252 CONVERSION_FUNCTION_IMPL(sampleRate, SampleRate, Native, Qt) |
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253 CONVERSION_FUNCTION_IMPL(channels, Channels, Qt, Native) |
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254 CONVERSION_FUNCTION_IMPL(channels, Channels, Native, Qt) |
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255 |
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256 bool sampleInfoQtToNative(int inputSampleSize, |
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257 QAudioFormat::Endian inputByteOrder, |
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258 QAudioFormat::SampleType inputSampleType, |
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259 TUint32 &outputFourCC, |
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260 TMMFSoundEncoding &outputEncoding) { |
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261 |
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262 bool found = false; |
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263 |
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264 for (int i=0; i<EncodingCount && !found; ++i) { |
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265 if ( EncodingSampleSize[i] == inputSampleSize |
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266 && EncodingByteOrder[i] == inputByteOrder |
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267 && EncodingSampleType[i] == inputSampleType) { |
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268 outputFourCC = EncodingFourCC[i]; |
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269 outputEncoding = EncodingNative[i]; // EMMFSoundEncoding16BitPCM |
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270 found = true; |
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271 } |
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272 } |
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273 |
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274 return found; |
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275 } |
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276 |
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277 //----------------------------------------------------------------------------- |
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278 // Public functions |
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279 //----------------------------------------------------------------------------- |
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280 |
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281 void capabilitiesNativeToQt(const DevSoundCapabilities &caps, |
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282 QList<int> &frequencies, |
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283 QList<int> &channels, |
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284 QList<int> &sampleSizes, |
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285 QList<QAudioFormat::Endian> &byteOrders, |
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286 QList<QAudioFormat::SampleType> &sampleTypes) { |
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287 |
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288 frequencies.clear(); |
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289 sampleSizes.clear(); |
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290 byteOrders.clear(); |
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291 sampleTypes.clear(); |
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292 channels.clear(); |
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293 |
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294 for (int i=0; i<SampleRateCount; ++i) |
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295 if (caps.caps().iRate & SampleRateListNative[i]) |
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296 frequencies += SampleRateListQt[i]; |
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297 |
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298 for (int i=0; i<ChannelsCount; ++i) |
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299 if (caps.caps().iChannels & ChannelsListNative[i]) |
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300 channels += ChannelsListQt[i]; |
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301 |
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302 for (int i=0; i<EncodingCount; ++i) { |
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303 if (caps.fourCC().Find(EncodingFourCC[i]) != KErrNotFound) { |
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304 sampleSizes += EncodingSampleSize[i]; |
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305 byteOrders += EncodingByteOrder[i]; |
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306 sampleTypes += EncodingSampleType[i]; |
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307 } |
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308 } |
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309 |
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310 } |
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311 |
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312 bool isFormatSupported(const QAudioFormat &formatQt, |
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313 const DevSoundCapabilities &caps) { |
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314 TMMFCapabilities formatNative; |
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315 TUint32 fourCC; |
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316 |
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317 bool result = false; |
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318 if (formatQt.codec() == "audio/pcm" && |
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319 formatQtToNative(formatQt, fourCC, formatNative)) { |
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320 result = |
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321 (formatNative.iRate & caps.caps().iRate) |
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322 && (formatNative.iChannels & caps.caps().iChannels) |
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323 && (caps.fourCC().Find(fourCC) != KErrNotFound); |
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324 } |
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325 return result; |
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326 } |
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327 |
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328 bool formatQtToNative(const QAudioFormat &inputFormat, |
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329 TUint32 &outputFourCC, |
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330 TMMFCapabilities &outputFormat) { |
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331 |
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332 bool result = false; |
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333 |
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334 // Need to use temporary variables because TMMFCapabilities fields are all |
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335 // TInt, rather than MMF enumerated types. |
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336 TMMFSampleRate outputSampleRate; |
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337 TMMFMonoStereo outputChannels; |
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338 TMMFSoundEncoding outputEncoding; |
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339 |
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340 if (inputFormat.codec() == "audio/pcm") { |
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341 result = |
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342 sampleRateQtToNative(inputFormat.frequency(), outputSampleRate) |
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343 && channelsQtToNative(inputFormat.channels(), outputChannels) |
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344 && sampleInfoQtToNative(inputFormat.sampleSize(), |
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345 inputFormat.byteOrder(), |
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346 inputFormat.sampleType(), |
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347 outputFourCC, |
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348 outputEncoding); |
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349 } |
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350 |
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351 if (result) { |
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352 outputFormat.iRate = outputSampleRate; |
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353 outputFormat.iChannels = outputChannels; |
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354 outputFormat.iEncoding = outputEncoding; |
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355 } |
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356 |
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357 return result; |
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358 } |
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359 |
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360 QAudio::State stateNativeToQt(State nativeState, |
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361 QAudio::State initializingState) |
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362 { |
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363 switch (nativeState) { |
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364 case ClosedState: |
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365 return QAudio::StoppedState; |
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366 case InitializingState: |
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367 return initializingState; |
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368 case ActiveState: |
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369 return QAudio::ActiveState; |
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370 case IdleState: |
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371 return QAudio::IdleState; |
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372 case SuspendedState: |
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373 return QAudio::SuspendedState; |
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374 default: |
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375 Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid state"); |
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376 return QAudio::StoppedState; // suppress compiler warning |
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377 } |
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378 } |
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379 |
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380 qint64 bytesToSamples(const QAudioFormat &format, qint64 length) |
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381 { |
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382 return length / ((format.sampleSize() / 8) * format.channels()); |
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383 } |
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384 |
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385 qint64 samplesToBytes(const QAudioFormat &format, qint64 samples) |
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386 { |
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387 return samples * (format.sampleSize() / 8) * format.channels(); |
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388 } |
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389 |
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390 } // namespace Utils |
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391 } // namespace SymbianAudio |
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392 |
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393 QT_END_NAMESPACE |
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394 |
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395 |