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1 /* This file is part of the KDE project. |
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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 |
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5 This library is free software: you can redistribute it and/or modify |
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6 it under the terms of the GNU Lesser General Public License as published by |
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7 the Free Software Foundation, either version 2.1 or 3 of the License. |
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8 |
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9 This library is distributed in the hope that it will be useful, |
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 GNU Lesser General Public License for more details. |
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13 |
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14 You should have received a copy of the GNU Lesser General Public License |
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15 along with this library. If not, see <http://www.gnu.org/licenses/>. |
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16 |
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17 */ |
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18 |
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19 #ifndef PHONON_MMF_ABSTRACTVIDEOPLAYER_H |
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20 #define PHONON_MMF_ABSTRACTVIDEOPLAYER_H |
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21 |
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22 #include <videoplayer.h> // from epoc32/include |
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23 |
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24 #include <QSize> |
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25 |
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26 #include "abstractmediaplayer.h" |
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27 #include "abstractvideooutput.h" |
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28 #include "defs.h" |
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29 |
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30 QT_BEGIN_NAMESPACE |
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31 |
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32 namespace Phonon |
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33 { |
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34 namespace MMF |
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35 { |
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36 /** |
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37 * @short ABC for classes which wrap the MMF video player utility |
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38 * |
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39 * On devices which use the legacy graphics subsystem which does not |
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40 * support surfaces, video rendering is done via Direct Screen Access using |
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41 * the CVideoPlayerUtility API. On devices with a graphics subsystem which |
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42 * does support surfaces, video rendering is done using the |
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43 * CVideoPlayerUtility2 API. Because CVideoPlayerUtility2 inherits from |
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44 * CVideoPlayerUtility, AbstractVideoPlayer holds a pointer to the latter. |
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45 * |
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46 * @see DsaVideoPlayer, SurfaceVideoPlayer |
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47 */ |
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48 class AbstractVideoPlayer |
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49 : public AbstractMediaPlayer |
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50 , public MVideoPlayerUtilityObserver |
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51 , public MVideoLoadingObserver |
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52 { |
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53 Q_OBJECT |
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54 |
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55 public: |
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56 ~AbstractVideoPlayer(); |
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57 |
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58 typedef CVideoPlayerUtility NativePlayer; |
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59 NativePlayer *nativePlayer() const; |
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60 |
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61 // AbstractPlayer |
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62 virtual void doPlay(); |
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63 virtual void doPause(); |
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64 virtual void doStop(); |
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65 virtual void doSeek(qint64 milliseconds); |
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66 virtual int setDeviceVolume(int mmfVolume); |
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67 virtual int openFile(RFile &file); |
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68 virtual int openUrl(const QString &url); |
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69 virtual int bufferStatus() const; |
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70 virtual void close(); |
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71 |
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72 // MediaObjectInterface |
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73 virtual bool hasVideo() const; |
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74 virtual qint64 currentTime() const; |
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75 virtual qint64 totalTime() const; |
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76 |
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77 // AbstractPlayer |
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78 virtual void videoOutputChanged(); |
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79 |
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80 // AbstractMediaPlayer |
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81 virtual int numberOfMetaDataEntries() const; |
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82 virtual QPair<QString, QString> metaDataEntry(int index) const; |
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83 |
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84 public Q_SLOTS: |
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85 void videoWindowChanged(); |
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86 void aspectRatioChanged(); |
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87 void scaleModeChanged(); |
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88 |
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89 protected: |
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90 AbstractVideoPlayer(MediaObject *parent, const AbstractPlayer *player); |
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91 void construct(); |
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92 virtual void initVideoOutput(); |
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93 void updateScaleFactors(const QSize &windowSize, bool apply = true); |
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94 |
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95 // Called when a video parameter changes. If the underlying native API is |
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96 // ready to handle the change, it is propagated immediately, otherwise the |
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97 // change is recorded in m_pendingChanged and handled later by |
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98 // handlePendingParametersChanged(). |
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99 void parametersChanged(VideoParameters parameter); |
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100 |
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101 // Implementation must initialize the m_player pointer. |
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102 virtual void createPlayer() = 0; |
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103 |
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104 // Called from the MvpuoPrepareComplete callback. Allows derived class to |
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105 // calculate clipping rectangles and scale factors prior to starting |
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106 // playback. |
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107 virtual void prepareCompleted() = 0; |
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108 |
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109 // Called when native video window handle changes. Derived class may defer |
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110 // propagation of this change to the MMF video player utility by calling |
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111 // parametersChanged(). |
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112 virtual void handleVideoWindowChanged() = 0; |
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113 |
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114 // Called when the derived class must handle changes which have been made |
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115 // to video parameters such as window handle, screen rectangle and scale |
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116 // factors. Guaranteed to be called only when the underlying MMF video |
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117 // player object is ready to handle changes to these parameters. |
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118 virtual void handleParametersChanged(VideoParameters parameters) = 0; |
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119 |
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120 private: |
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121 void getVideoClipParametersL(TInt aError); |
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122 |
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123 // Called when native player API enters a state in which it is able to |
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124 // handle pending changes such as new video window handle, updated scale |
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125 // factors etc. |
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126 void handlePendingParametersChanged(); |
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127 |
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128 private: |
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129 // MVideoPlayerUtilityObserver |
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130 virtual void MvpuoOpenComplete(TInt aError); |
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131 virtual void MvpuoPrepareComplete(TInt aError); |
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132 virtual void MvpuoFrameReady(CFbsBitmap &aFrame, TInt aError); |
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133 virtual void MvpuoPlayComplete(TInt aError); |
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134 virtual void MvpuoEvent(const TMMFEvent &aEvent); |
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135 |
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136 // MVideoLoadingObserver |
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137 virtual void MvloLoadingStarted(); |
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138 virtual void MvloLoadingComplete(); |
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139 |
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140 protected: |
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141 QScopedPointer<NativePlayer> m_player; |
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142 |
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143 // Not owned |
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144 RWsSession& m_wsSession; |
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145 CWsScreenDevice& m_screenDevice; |
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146 RWindowBase* m_window; |
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147 |
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148 // Scaling factors for video display, expressed as percentages |
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149 TReal32 m_scaleWidth; |
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150 TReal32 m_scaleHeight; |
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151 |
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152 // Dimensions of the video clip |
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153 QSize m_videoFrameSize; |
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154 |
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155 private: |
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156 // Bitmask of parameters which have changed while the MMF video player |
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157 // object is not yet ready to receive these changes. |
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158 // See handlePendingParametersChanged(). |
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159 VideoParameters m_pendingChanges; |
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160 |
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161 // Duration of the video clip |
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162 qint64 m_totalTime; |
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163 |
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164 }; |
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165 |
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166 } |
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167 } |
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168 |
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169 QT_END_NAMESPACE |
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170 |
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171 #endif |