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1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 /** |
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17 @file |
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18 @publishedPartner |
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19 @prototype |
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20 */ |
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21 |
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22 #ifndef __DISPLAY_CHAN_H__ |
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23 #define __DISPLAY_CHAN_H__ |
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24 |
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25 #include "nk_priv.h" |
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26 #include <dispchannel.h> |
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27 #include <videodriver.h> |
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28 #include "displayhandler.h" |
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29 |
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30 struct TBufferAddressA; |
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31 class TScreenBuffer; |
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32 /** |
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33 Logical Channel kernel side class for Display |
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34 */ |
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35 |
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36 |
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37 class DDisplayChannel : public DLogicalChannel |
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38 { |
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39 public: |
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40 // constants |
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41 enum { KDisplayChMajorVersionNumber = 1 }; |
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42 enum { KDisplayChMinorVersionNumber = 2 }; |
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43 enum { KDisplayChBuildVersionNumber = 1 }; |
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44 public: |
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45 // Duplicate of RDisplayChannel structure, as the header file cannot be used. |
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46 class TCaps |
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47 { |
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48 public: |
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49 TVersion iVersion; |
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50 }; |
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51 |
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52 class TRequest |
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53 { |
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54 public: |
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55 inline TRequest(void) : iThread(0), iStatus(0) {} |
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56 TBool SetStatus(TThreadMessage& aMsg); |
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57 void Complete(TInt aResult); |
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58 public: |
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59 DThread* iThread; |
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60 TRequestStatus* iStatus; |
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61 }; |
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62 |
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63 class TBufferInfo |
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64 { |
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65 public: |
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66 TAny* iAddress; |
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67 DChunk* iChunk; |
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68 TRequest iRequest; |
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69 }; |
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70 |
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71 enum TDisplayPanic |
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72 { |
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73 EDisplayPanicNullThreadOnSet = 1, |
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74 EDisplayPanicInUse = 2, |
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75 EDisplayPanicThreadAlreadySet = 3, |
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76 EDisplayPanicNullThreadOnComplete = 4, |
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77 EDisplayPanicThreadOpenFailed = 5, |
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78 EDisplayPanicWaitForPostMissed = 6, |
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79 EDisplayPanicNullArgument = 7, |
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80 EDisplayPanicNotYetImplemented = 8, |
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81 EDisplayPanicInvalidDimensions = 9, |
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82 EDisplayPanicInvalidRotation = 10, |
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83 EDisplayPanicInvalidBitDepth = 11, |
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84 EDisplayPanicInvalidStride = 12, |
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85 EDisplayPanicInvalidWindowHandle = 13, |
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86 EDisplayPanicInvalidFrameBuffers = 14, |
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87 EDisplayPanicInvalidRefreshRate = 15, |
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88 EDisplayPanicInvalidOffset = 16, |
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89 EDisplayPanicNoLegacyBuffer = 17 |
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90 }; |
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91 |
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92 public: |
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93 DDisplayChannel(void); |
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94 ~DDisplayChannel(void); |
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95 |
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96 // DLogicalChannel implementation |
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97 virtual TInt DoCreate(TInt aUnit, const TDesC8* aInfo, const TVersion& aVer); |
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98 virtual void HandleMsg(TMessageBase* aMsg); |
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99 |
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100 // Function used by the UI code to set up the buffers. |
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101 virtual TInt Initialize(RDisplayChannel::TDisplayInfo& aInfo, |
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102 RDisplayChannel::TDisplayRotation aRotation, |
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103 HWND aHwnd, RPointerArray<TAny>& aFrameBuffers, |
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104 RPointerArray<TBufferAddressA>& aChunks, |
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105 TScreenBuffer& aDsaBuffer, |
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106 TSize aResolution, |
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107 TSize aTwips, |
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108 const RDisplayChannel::TPixelFormat aPixelFormatArray[], |
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109 const TInt aPixelFormatArraySize, |
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110 const RDisplayChannel::TBufferFormat& aBufferFormat); |
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111 virtual void SetLegacyBuffer(void *aAddress); |
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112 |
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113 private: |
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114 DDisplayChannel(const DDisplayChannel&); |
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115 |
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116 // Handlers for the three classes of channel message sent |
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117 TInt DoControl(TInt aFunction); |
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118 void DoRequest(TInt aFunction); |
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119 TInt DoCancel(TInt aRequestMask); |
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120 TInt NumberOfResolutions(); |
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121 TInt SafePut(TAny* aDst, TAny* aSrc, TInt aBytes); |
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122 |
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123 void ValidateSpecificInfo(TInt aBytesPerPixel, RDisplayChannel::TOrientationSpecificInfo& aInfo); |
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124 static void Panic(TDisplayPanic aPanic); |
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125 void ClientPanic(RDisplayChannel::TPanic aPanic); |
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126 |
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127 inline TBool IsCompositionBuffer(RDisplayChannel::TBufferId aId); |
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128 static inline TBool IsLegacyBuffer(RDisplayChannel::TBufferId aId); |
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129 static inline TBool IsUserBuffer(RDisplayChannel::TBufferId aId); |
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130 inline TBool IsValidBuffer(RDisplayChannel::TBufferId aId); |
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131 inline RDisplayChannel::TBufferId NextCompositionBuffer(RDisplayChannel::TBufferId aId); |
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132 |
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133 static inline TBool IsFlipped(RDisplayChannel::TDisplayRotation aRotation); |
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134 |
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135 static void VSyncTimerFn(TAny* aDisplayChannel); |
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136 void DoVSyncTimer(void); |
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137 static void VSyncDfcFn(TAny* aDisplayChannel); |
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138 void DoVSync(void); |
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139 |
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140 TInt PostCompositionBuffer(TAny* aRegion, RDisplayChannel::TPostCount* aPostCount); |
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141 TInt PostLegacyBuffer(TAny* aRegion, RDisplayChannel::TPostCount* aPostCount); |
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142 TInt GetCompositionBuffer(TAny** aAddress); |
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143 TInt PostUserBuffer(RDisplayChannel::TBufferId* aBufferId, TAny* aRegion, RDisplayChannel::TPostCount* aPostCount); |
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144 TInt WaitForPost(RDisplayChannel::TPostCount* aPostCount); |
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145 TInt WaitForDisplayConnect(); |
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146 TInt SetRotation(RDisplayChannel::TDisplayRotation* aNewRotation, TBool* aIsBufferPreserved); |
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147 TInt RegisterUserBuffer(TInt aChunkHandle, TInt aOffset, RDisplayChannel::TBufferId* aBufferId); |
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148 TInt DeregisterUserBuffer(RDisplayChannel::TBufferId* aBufferId); |
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149 TInt GetResolutions(); |
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150 TInt SetResolution(TSize* aSize); |
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151 TInt GetResolution(TSize* aSize); |
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152 TInt GetTwips(TSize* aSize); |
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153 TInt GetIndexForSize(const TSize& aSize,TInt& aSpinnerOut); |
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154 TInt GetPixelFormats(); |
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155 TInt SetBufferFormat(RDisplayChannel::TBufferFormat* aBufferFormat); |
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156 TInt NextPlaneOffset(RDisplayChannel::TBufferFormat* aBufferFormat, |
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157 RDisplayChannel::TBufferFormatContext* aContext); |
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158 TInt NextLineOffset(RDisplayChannel::TBufferFormat* aBufferFormat, |
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159 RDisplayChannel::TBufferFormatContext* aContext); |
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160 TInt ValidateBufferFormat(const RDisplayChannel::TBufferFormat& aBufferFormat, |
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161 const RDisplayChannel::TResolution& aResolution); |
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162 private: |
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163 // Constants |
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164 enum {KDfcPriority = 6}; |
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165 |
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166 enum {KBufferNotSet = -1}; |
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167 |
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168 // Buffer index points. The legacy buffer is first, followed by the user |
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169 // buffers, followed by a variable number of composition buffers. |
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170 enum { KLegacyBuffer = 0}; |
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171 enum { KFirstUserBuffer = KLegacyBuffer + 1}; |
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172 enum { KFirstCompositionBuffer = KFirstUserBuffer + RDisplayChannel::TDisplayInfo::KMaxUserBuffers}; |
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173 enum { KMaxBufferSizeHeightAndWidth = KMaxTInt16 }; |
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174 |
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175 private: |
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176 TInt iScreenNumber; |
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177 TThreadMessage* iMsg; |
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178 TInt iVSyncTicks; // Number of nanokernel ticks between frames |
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179 TUint iNumCompositionBuffers; // Number of composition buffers |
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180 TUint iTotalBuffers; // KFirstCompositionBuffer + iNumCompositionBuffers |
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181 RDisplayChannel::TDisplayInfo iChannelInfo; |
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182 RDisplayChannel::TPostCount iPostCount; // Count of Post... calls |
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183 RDisplayChannel::TPostCount iLastPostCount; // Value of iPostCount when last buffer was actually posted |
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184 TBufferInfo* iBuffer; // Allocated to contain iTotalBuffers |
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185 TBufferAddressA* iChunks; |
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186 DThread* iClient; |
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187 |
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188 // Posting support |
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189 NTimer iVSync; // Emulated VSync signal using a timer |
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190 TDfc iVSyncDfc; // DFC queued on DfcQue0 when iVSync triggers |
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191 RDisplayChannel::TBufferId iPostedBuffer; // Index of buffer to be posted on next frame |
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192 RDisplayChannel::TDisplayRotation iCurrentRotation; // Rotation of buffer being posted |
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193 RDisplayChannel::TDisplayRotation iNewRotation; // Rotation of buffer being posted |
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194 TSize iCurrentResolution; // Display resolution (normal rotation) to be posted |
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195 TSize iNewResolution; // Display resolution (normal rotation) for buffer being posted |
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196 TSize iCurrentTwips; |
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197 TInt iPostedRectCount; // Number of rectangles defined in region |
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198 RECT iPostedRect[RDisplayChannel::TDisplayInfo::KMaxRectangles]; // |
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199 |
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200 // Paint support |
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201 HWND iHwnd; // Window to be painted |
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202 RDisplayChannel::TBufferId iDisplayBuffer; // Index of buffer to be painted |
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203 RDisplayChannel::TDisplayRotation iDisplayRotation; // Rotation of buffer to be painted |
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204 TSize iDisplayResolution; // Display resolution (normal rotation) on screen |
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205 |
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206 // GetCompositionBuffer support |
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207 TUint iGetBuffer; // Index of next composition buffer |
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208 |
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209 // WaitForPost support |
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210 RDisplayChannel::TPostCount iWaitForPost; // Post count being awaited |
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211 TRequest iWaitForPostRequest; // Request to complete when post count reached |
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212 |
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213 // WaitForDisplayConnect support |
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214 TRequest iWaitForDisplayConnect; // Request to complete when display connection state changes |
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215 |
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216 TInt iDisplayStateSpinner; |
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217 |
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218 TVersion iVersion; |
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219 const RDisplayChannel::TPixelFormat* iPixelFormatArray; |
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220 TInt iPixelFormatArraySize; |
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221 RDisplayChannel::TBufferFormat iInitialBufferFormat; |
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222 RDisplayChannel::TBufferFormat iCurrentBufferFormat; |
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223 RDisplayChannel::TBufferFormat iDisplayBufferFormat; |
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224 RDisplayChannel::TBufferFormat iNewBufferFormat; |
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225 }; |
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226 |
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227 inline TBool DDisplayChannel::IsCompositionBuffer(RDisplayChannel::TBufferId aId) |
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228 { return (aId >= KFirstCompositionBuffer && aId < iTotalBuffers); } |
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229 inline TBool DDisplayChannel::IsLegacyBuffer(RDisplayChannel::TBufferId aId) |
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230 { return (aId == KLegacyBuffer); } |
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231 inline TBool DDisplayChannel::IsUserBuffer(RDisplayChannel::TBufferId aId) |
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232 { return (aId >= KFirstUserBuffer && aId < (KFirstUserBuffer + RDisplayChannel::TDisplayInfo::KMaxUserBuffers)); } |
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233 inline TBool DDisplayChannel::IsValidBuffer(RDisplayChannel::TBufferId aId) |
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234 { return (aId >= 0 && aId < iTotalBuffers); } |
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235 inline RDisplayChannel::TBufferId DDisplayChannel::NextCompositionBuffer(RDisplayChannel::TBufferId aId) |
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236 { TUint r = (aId + 1); return (r >= iTotalBuffers) ? KFirstCompositionBuffer : r; } |
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237 |
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238 inline TBool DDisplayChannel::IsFlipped(RDisplayChannel::TDisplayRotation aRotation) |
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239 { return !(aRotation & (RDisplayChannel::ERotationNormal | RDisplayChannel::ERotation180)); } |
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240 |
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241 #endif |
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242 |