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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 Qt Mobility Components. |
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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 "qaudiosystem.h" |
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43 |
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44 QT_BEGIN_NAMESPACE |
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45 |
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46 /*! |
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47 \class QAbstractAudioDeviceInfo |
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48 \brief The QAbstractAudioDeviceInfo class is a base class for audio backends. |
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49 |
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50 \ingroup multimedia |
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51 \inmodule QtMultimediaKit |
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52 \internal |
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53 |
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54 This class implements the audio functionality for |
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55 QAudioDeviceInfo, i.e., QAudioDeviceInfo keeps a |
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56 QAbstractAudioDeviceInfo and routes function calls to it. For a |
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57 description of the functionality that QAbstractAudioDeviceInfo |
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58 implements, you can read the class and functions documentation of |
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59 QAudioDeviceInfo. |
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60 |
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61 \sa QAudioDeviceInfo |
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62 \sa QAbstractAudioOutput, QAbstractAudioInput |
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63 */ |
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64 |
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65 /*! |
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66 \fn virtual QAudioFormat QAbstractAudioDeviceInfo::preferredFormat() const |
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67 Returns the recommended settings to use. |
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68 */ |
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69 |
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70 /*! |
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71 \fn virtual bool QAbstractAudioDeviceInfo::isFormatSupported(const QAudioFormat& format) const |
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72 Returns true if \a format is available from audio device. |
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73 */ |
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74 |
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75 /*! |
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76 \fn virtual QString QAbstractAudioDeviceInfo::deviceName() const |
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77 Returns the audio device name. |
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78 */ |
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79 |
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80 /*! |
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81 \fn virtual QStringList QAbstractAudioDeviceInfo::supportedCodecs() |
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82 Returns the list of currently available codecs. |
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83 */ |
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84 |
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85 /*! |
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86 \fn virtual QList<int> QAbstractAudioDeviceInfo::supportedSampleRates() |
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87 Returns the list of currently available sample rates. |
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88 */ |
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89 |
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90 /*! |
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91 \fn virtual QList<int> QAbstractAudioDeviceInfo::supportedChannelCounts() |
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92 Returns the list of currently available channels. |
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93 */ |
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94 |
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95 /*! |
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96 \fn virtual QList<int> QAbstractAudioDeviceInfo::supportedSampleSizes() |
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97 Returns the list of currently available sample sizes. |
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98 */ |
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99 |
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100 /*! |
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101 \fn virtual QList<QAudioFormat::Endian> QAbstractAudioDeviceInfo::supportedByteOrders() |
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102 Returns the list of currently available byte orders. |
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103 */ |
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104 |
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105 /*! |
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106 \fn virtual QList<QAudioFormat::SampleType> QAbstractAudioDeviceInfo::supportedSampleTypes() |
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107 Returns the list of currently available sample types. |
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108 */ |
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109 |
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110 /*! |
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111 \class QAbstractAudioOutput |
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112 \brief The QAbstractAudioOutput class is a base class for audio backends. |
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113 |
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114 \ingroup multimedia |
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115 \inmodule QtMultimediaKit |
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116 \internal |
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117 |
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118 QAbstractAudioOutput implements audio functionality for |
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119 QAudioOutput, i.e., QAudioOutput routes function calls to |
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120 QAbstractAudioOutput. For a description of the functionality that |
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121 is implemented, see the QAudioOutput class and function |
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122 descriptions. |
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123 |
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124 \sa QAudioOutput |
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125 */ |
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126 |
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127 /*! |
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128 \fn virtual void QAbstractAudioOutput::start(QIODevice* device) |
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129 Uses the \a device as the QIODevice to transfer data. |
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130 */ |
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131 |
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132 /*! |
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133 \fn virtual QIODevice* QAbstractAudioOutput::start() |
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134 Returns a pointer to the QIODevice being used to handle |
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135 the data transfer. This QIODevice can be used to write() audio data directly. |
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136 */ |
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137 |
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138 /*! |
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139 \fn virtual void QAbstractAudioOutput::stop() |
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140 Stops the audio output. |
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141 */ |
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142 |
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143 /*! |
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144 \fn virtual void QAbstractAudioOutput::reset() |
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145 Drops all audio data in the buffers, resets buffers to zero. |
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146 */ |
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147 |
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148 /*! |
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149 \fn virtual void QAbstractAudioOutput::suspend() |
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150 Stops processing audio data, preserving buffered audio data. |
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151 */ |
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152 |
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153 /*! |
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154 \fn virtual void QAbstractAudioOutput::resume() |
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155 Resumes processing audio data after a suspend() |
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156 */ |
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157 |
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158 /*! |
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159 \fn virtual int QAbstractAudioOutput::bytesFree() const |
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160 Returns the free space available in bytes in the audio buffer. |
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161 */ |
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162 |
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163 /*! |
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164 \fn virtual int QAbstractAudioOutput::periodSize() const |
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165 Returns the period size in bytes. |
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166 */ |
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167 |
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168 /*! |
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169 \fn virtual void QAbstractAudioOutput::setBufferSize(int value) |
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170 Sets the audio buffer size to \a value in bytes. |
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171 */ |
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172 |
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173 /*! |
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174 \fn virtual int QAbstractAudioOutput::bufferSize() const |
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175 Returns the audio buffer size in bytes. |
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176 */ |
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177 |
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178 /*! |
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179 \fn virtual void QAbstractAudioOutput::setNotifyInterval(int ms) |
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180 Sets the interval for notify() signal to be emitted. This is based on the \a ms |
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181 of audio data processed not on actual real-time. The resolution of the timer |
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182 is platform specific. |
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183 */ |
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184 |
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185 /*! |
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186 \fn virtual int QAbstractAudioOutput::notifyInterval() const |
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187 Returns the notify interval in milliseconds. |
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188 */ |
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189 |
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190 /*! |
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191 \fn virtual qint64 QAbstractAudioOutput::processedUSecs() const |
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192 Returns the amount of audio data processed since start() was called in milliseconds. |
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193 */ |
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194 |
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195 /*! |
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196 \fn virtual qint64 QAbstractAudioOutput::elapsedUSecs() const |
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197 Returns the milliseconds since start() was called, including time in Idle and suspend states. |
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198 */ |
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199 |
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200 /*! |
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201 \fn virtual QAudio::Error QAbstractAudioOutput::error() const |
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202 Returns the error state. |
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203 */ |
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204 |
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205 /*! |
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206 \fn virtual QAudio::State QAbstractAudioOutput::state() const |
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207 Returns the state of audio processing. |
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208 */ |
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209 |
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210 /*! |
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211 \fn virtual void QAbstractAudioOutput::setFormat(const QAudioFormat& fmt) |
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212 Set the QAudioFormat to use to \a fmt. |
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213 Setting the format is only allowable while in QAudio::StoppedState. |
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214 */ |
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215 |
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216 /*! |
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217 \fn virtual QAudioFormat QAbstractAudioOutput::format() const |
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218 Returns the QAudioFormat being used. |
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219 */ |
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220 |
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221 /*! |
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222 \fn QAbstractAudioOutput::errorChanged(QAudio::Error error) |
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223 This signal is emitted when the \a error state has changed. |
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224 */ |
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225 |
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226 /*! |
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227 \fn QAbstractAudioOutput::stateChanged(QAudio::State state) |
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228 This signal is emitted when the device \a state has changed. |
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229 */ |
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230 |
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231 /*! |
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232 \fn QAbstractAudioOutput::notify() |
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233 This signal is emitted when x ms of audio data has been processed |
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234 the interval set by setNotifyInterval(x). |
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235 */ |
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236 |
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237 |
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238 /*! |
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239 \class QAbstractAudioInput |
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240 \brief The QAbstractAudioInput class provides access for QAudioInput to access the audio |
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241 device provided by the plugin. |
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242 |
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243 \ingroup multimedia |
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244 \inmodule QtMultimediaKit |
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245 \internal |
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246 |
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247 QAudioDeviceInput keeps an instance of QAbstractAudioInput and |
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248 routes calls to functions of the same name to QAbstractAudioInput. |
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249 This means that it is QAbstractAudioInput that implements the |
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250 audio functionality. For a description of the functionality, see |
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251 the QAudioInput class description. |
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252 |
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253 \sa QAudioInput |
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254 */ |
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255 |
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256 /*! |
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257 \fn virtual void QAbstractAudioInput::start(QIODevice* device) |
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258 Uses the \a device as the QIODevice to transfer data. |
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259 */ |
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260 |
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261 /*! |
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262 \fn virtual QIODevice* QAbstractAudioInput::start() |
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263 Returns a pointer to the QIODevice being used to handle |
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264 the data transfer. This QIODevice can be used to read() audio data directly. |
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265 */ |
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266 |
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267 /*! |
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268 \fn virtual void QAbstractAudioInput::stop() |
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269 Stops the audio input. |
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270 */ |
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271 |
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272 /*! |
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273 \fn virtual void QAbstractAudioInput::reset() |
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274 Drops all audio data in the buffers, resets buffers to zero. |
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275 */ |
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276 |
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277 /*! |
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278 \fn virtual void QAbstractAudioInput::suspend() |
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279 Stops processing audio data, preserving buffered audio data. |
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280 */ |
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281 |
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282 /*! |
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283 \fn virtual void QAbstractAudioInput::resume() |
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284 Resumes processing audio data after a suspend(). |
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285 */ |
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286 |
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287 /*! |
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288 \fn virtual int QAbstractAudioInput::bytesReady() const |
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289 Returns the amount of audio data available to read in bytes. |
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290 */ |
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291 |
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292 /*! |
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293 \fn virtual int QAbstractAudioInput::periodSize() const |
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294 Returns the period size in bytes. |
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295 */ |
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296 |
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297 /*! |
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298 \fn virtual void QAbstractAudioInput::setBufferSize(int value) |
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299 Sets the audio buffer size to \a value in milliseconds. |
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300 */ |
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301 |
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302 /*! |
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303 \fn virtual int QAbstractAudioInput::bufferSize() const |
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304 Returns the audio buffer size in milliseconds. |
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305 */ |
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306 |
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307 /*! |
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308 \fn virtual void QAbstractAudioInput::setNotifyInterval(int ms) |
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309 Sets the interval for notify() signal to be emitted. This is based |
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310 on the \a ms of audio data processed not on actual real-time. |
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311 The resolution of the timer is platform specific. |
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312 */ |
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313 |
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314 /*! |
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315 \fn virtual int QAbstractAudioInput::notifyInterval() const |
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316 Returns the notify interval in milliseconds. |
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317 */ |
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318 |
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319 /*! |
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320 \fn virtual qint64 QAbstractAudioInput::processedUSecs() const |
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321 Returns the amount of audio data processed since start() was called in milliseconds. |
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322 */ |
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323 |
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324 /*! |
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325 \fn virtual qint64 QAbstractAudioInput::elapsedUSecs() const |
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326 Returns the milliseconds since start() was called, including time in Idle and suspend states. |
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327 */ |
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328 |
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329 /*! |
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330 \fn virtual QAudio::Error QAbstractAudioInput::error() const |
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331 Returns the error state. |
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332 */ |
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333 |
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334 /*! |
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335 \fn virtual QAudio::State QAbstractAudioInput::state() const |
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336 Returns the state of audio processing. |
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337 */ |
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338 |
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339 /*! |
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340 \fn virtual void QAbstractAudioInput::setFormat(const QAudioFormat& fmt) |
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341 Set the QAudioFormat to use to \a fmt. |
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342 Setting the format is only allowable while in QAudio::StoppedState. |
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343 */ |
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344 |
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345 /*! |
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346 \fn virtual QAudioFormat QAbstractAudioInput::format() const |
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347 Returns the QAudioFormat being used |
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348 */ |
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349 |
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350 /*! |
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351 \fn QAbstractAudioInput::errorChanged(QAudio::Error error) |
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352 This signal is emitted when the \a error state has changed. |
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353 */ |
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354 |
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355 /*! |
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356 \fn QAbstractAudioInput::stateChanged(QAudio::State state) |
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357 This signal is emitted when the device \a state has changed. |
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358 */ |
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359 |
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360 /*! |
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361 \fn QAbstractAudioInput::notify() |
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362 This signal is emitted when x ms of audio data has been processed |
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363 the interval set by setNotifyInterval(x). |
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364 */ |
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365 |
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366 |
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367 QT_END_NAMESPACE |