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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 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 "qgstreameraudioencode_maemo.h" |
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43 #include "qgstreamermediacontainercontrol_maemo.h" |
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44 |
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45 #include <QtCore/qdebug.h> |
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46 |
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47 QGstreamerAudioEncode::QGstreamerAudioEncode(QObject *parent) |
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48 :QAudioEncoderControl(parent) |
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49 { |
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50 QList<QByteArray> codecCandidates; |
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51 codecCandidates << "audio/mpeg" << "audio/PCM" << "audio/AMR" << "audio/AMR-WB" << "audio/speex"; |
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52 |
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53 m_elementNames["audio/mpeg"] = "nokiaaacenc"; |
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54 m_elementNames["audio/speex"] = "speexenc"; |
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55 m_elementNames["audio/PCM"] = "audioresample"; |
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56 m_elementNames["audio/AMR"] = "nokiaamrnbenc"; |
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57 m_elementNames["audio/AMR-WB"] = "nokiaamrwbenc"; |
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58 |
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59 foreach( const QByteArray& codecName, codecCandidates ) { |
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60 QByteArray elementName = m_elementNames[codecName]; |
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61 GstElementFactory *factory = gst_element_factory_find(elementName.constData()); |
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62 |
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63 if (factory) { |
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64 m_codecs.append(codecName); |
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65 const gchar *descr = gst_element_factory_get_description(factory); |
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66 |
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67 if (codecName == QByteArray("audio/PCM")) |
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68 m_codecDescriptions.insert(codecName, tr("Raw PCM audio")); |
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69 else |
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70 m_codecDescriptions.insert(codecName, QString::fromUtf8(descr)); |
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71 |
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72 m_streamTypes.insert(codecName, |
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73 QGstreamerMediaContainerControl::supportedStreamTypes(factory, GST_PAD_SRC)); |
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74 |
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75 gst_object_unref(GST_OBJECT(factory)); |
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76 } |
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77 } |
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78 |
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79 if (!m_codecs.isEmpty()) |
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80 m_audioSettings.setCodec(m_codecs[0]); |
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81 } |
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82 |
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83 QGstreamerAudioEncode::~QGstreamerAudioEncode() |
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84 { |
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85 } |
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86 |
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87 QStringList QGstreamerAudioEncode::supportedAudioCodecs() const |
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88 { |
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89 return m_codecs; |
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90 } |
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91 |
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92 QString QGstreamerAudioEncode::codecDescription(const QString &codecName) const |
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93 { |
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94 return m_codecDescriptions.value(codecName); |
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95 } |
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96 |
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97 QStringList QGstreamerAudioEncode::supportedEncodingOptions(const QString &codec) const |
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98 { |
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99 return m_codecOptions.value(codec); |
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100 } |
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101 |
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102 QVariant QGstreamerAudioEncode::encodingOption( |
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103 const QString &codec, const QString &name) const |
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104 { |
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105 return m_options[codec].value(name); |
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106 } |
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107 |
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108 void QGstreamerAudioEncode::setEncodingOption( |
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109 const QString &codec, const QString &name, const QVariant &value) |
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110 { |
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111 m_options[codec][name] = value; |
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112 } |
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113 |
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114 QList<int> QGstreamerAudioEncode::supportedSampleRates(const QAudioEncoderSettings &, bool *) const |
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115 { |
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116 //TODO check element caps to find actual values |
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117 |
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118 return QList<int>(); |
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119 } |
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120 |
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121 QAudioEncoderSettings QGstreamerAudioEncode::audioSettings() const |
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122 { |
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123 return m_audioSettings; |
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124 } |
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125 |
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126 void QGstreamerAudioEncode::setAudioSettings(const QAudioEncoderSettings &settings) |
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127 { |
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128 m_audioSettings = settings; |
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129 } |
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130 |
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131 GstElement *QGstreamerAudioEncode::createEncoder() |
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132 { |
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133 QString codec = m_audioSettings.codec(); |
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134 |
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135 GstBin * encoderBin = GST_BIN(gst_bin_new("audio-encoder-bin")); |
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136 Q_ASSERT(encoderBin); |
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137 |
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138 GstElement *capsFilter = gst_element_factory_make("capsfilter", NULL); |
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139 GstElement *encoderElement = gst_element_factory_make(m_elementNames.value(codec).constData(), NULL); |
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140 |
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141 Q_ASSERT(encoderElement); |
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142 |
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143 gst_bin_add(encoderBin, capsFilter); |
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144 gst_bin_add(encoderBin, encoderElement); |
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145 gst_element_link(capsFilter, encoderElement); |
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146 |
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147 // add ghostpads |
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148 GstPad *pad = gst_element_get_static_pad(capsFilter, "sink"); |
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149 gst_element_add_pad(GST_ELEMENT(encoderBin), gst_ghost_pad_new("sink", pad)); |
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150 gst_object_unref(GST_OBJECT(pad)); |
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151 |
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152 pad = gst_element_get_static_pad(encoderElement, "src"); |
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153 gst_element_add_pad(GST_ELEMENT(encoderBin), gst_ghost_pad_new("src", pad)); |
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154 gst_object_unref(GST_OBJECT(pad)); |
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155 |
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156 if (m_audioSettings.sampleRate() > 0 || m_audioSettings.channelCount() > 0) { |
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157 GstCaps *caps = gst_caps_new_empty(); |
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158 GstStructure *structure = gst_structure_new("audio/x-raw-int", NULL); |
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159 |
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160 if (m_audioSettings.sampleRate() > 0) |
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161 gst_structure_set(structure, "rate", G_TYPE_INT, m_audioSettings.sampleRate(), NULL ); |
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162 |
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163 if (m_audioSettings.channelCount() > 0) |
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164 gst_structure_set(structure, "channels", G_TYPE_INT, m_audioSettings.channelCount(), NULL ); |
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165 |
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166 gst_caps_append_structure(caps,structure); |
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167 |
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168 g_object_set(G_OBJECT(capsFilter), "caps", caps, NULL); |
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169 } |
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170 |
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171 if (encoderElement) { |
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172 if (m_audioSettings.encodingMode() == QtMedia::ConstantQualityEncoding) { |
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173 QtMedia::EncodingQuality qualityValue = m_audioSettings.quality(); |
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174 |
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175 if (codec == QLatin1String("audio/mpeg")) { |
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176 g_object_set(G_OBJECT(encoderElement), "target", 0, NULL); //constant quality mode |
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177 qreal quality[] = { |
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178 8000, //VeryLow |
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179 64000, //Low |
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180 128000, //Normal |
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181 192000, //High |
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182 320000 //VeryHigh |
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183 }; |
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184 g_object_set(G_OBJECT(encoderElement), "bitrate", quality[qualityValue], NULL); |
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185 } else if (codec == QLatin1String("audio/speex")) { |
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186 //0-10 range with default 8 |
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187 double qualityTable[] = { |
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188 2, //VeryLow |
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189 5, //Low |
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190 8, //Normal |
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191 9, //High |
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192 10 //VeryHigh |
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193 }; |
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194 g_object_set(G_OBJECT(encoderElement), "quality", qualityTable[qualityValue], NULL); |
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195 } else if (codec.startsWith("audio/AMR")) { |
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196 int band[] = { |
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197 0, //VeryLow |
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198 2, //Low |
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199 4, //Normal |
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200 6, //High |
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201 7 //VeryHigh |
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202 }; |
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203 |
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204 g_object_set(G_OBJECT(encoderElement), "band-mode", band[qualityValue], NULL); |
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205 } |
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206 } else { |
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207 int bitrate = m_audioSettings.bitRate(); |
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208 if (bitrate > 0) { |
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209 g_object_set(G_OBJECT(encoderElement), "bitrate", bitrate, NULL); |
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210 } |
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211 } |
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212 |
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213 QMap<QString, QVariant> options = m_options.value(codec); |
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214 QMapIterator<QString,QVariant> it(options); |
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215 while (it.hasNext()) { |
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216 it.next(); |
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217 QString option = it.key(); |
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218 QVariant value = it.value(); |
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219 |
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220 switch (value.type()) { |
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221 case QVariant::Int: |
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222 g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toInt(), NULL); |
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223 break; |
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224 case QVariant::Bool: |
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225 g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toBool(), NULL); |
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226 break; |
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227 case QVariant::Double: |
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228 g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toDouble(), NULL); |
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229 break; |
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230 case QVariant::String: |
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231 g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toString().toUtf8().constData(), NULL); |
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232 break; |
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233 default: |
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234 qWarning() << "unsupported option type:" << option << value; |
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235 break; |
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236 } |
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237 |
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238 } |
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239 } |
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240 |
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241 return GST_ELEMENT(encoderBin); |
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242 |
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243 } |
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244 |
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245 |
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246 QSet<QString> QGstreamerAudioEncode::supportedStreamTypes(const QString &codecName) const |
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247 { |
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248 return m_streamTypes.value(codecName); |
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249 } |