1 // Copyright (c) 2006-2009 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 __SURFACEMANAGER_DEV_H__ |
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23 #define __SURFACEMANAGER_DEV_H__ |
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24 |
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25 #include <graphics/surface.h> |
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26 #include "surfacemanagerdriver.h" |
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27 |
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28 #if 0 |
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29 #define TRACE(x) x |
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30 #else |
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31 #define TRACE(x) |
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32 #endif |
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33 |
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34 /** Maximum number of HintPairs per surface */ |
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35 const TInt KMaxHintsPerSurface = 16; |
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36 |
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37 /** Maximum number of elements in the table. This value must be a power of 2 */ |
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38 #define KMaxLists 16 |
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39 |
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40 /** |
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41 Logical Device (factory class) for Surface manager |
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42 */ |
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43 class DSurfaceManagerFactory : public DLogicalDevice |
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44 { |
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45 public: |
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46 DSurfaceManagerFactory(); |
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47 TInt Install(); |
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48 void GetCaps(TDes8& aDes) const; |
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49 TInt Create(DLogicalChannelBase*& aChannel); |
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50 }; |
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51 |
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52 |
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53 /** |
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54 Logical Channel class for SurfaceManager |
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55 */ |
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56 class DSurfaceManagerChannel : public DLogicalChannelBase |
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57 { |
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58 public: |
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59 DSurfaceManagerChannel(); |
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60 ~DSurfaceManagerChannel(); |
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61 |
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62 // Inherited from DLogicalChannelBase |
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63 TInt DoCreate(TInt aUnit, const TDesC8* aInfo, const TVersion& aVer); |
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64 TInt Request(TInt aReqNo, TAny* a1, TAny* a2); |
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65 private: |
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66 // Implementation for the different kinds of messages sent through RBusLogicalChannel |
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67 TInt DoControl(TInt aFunction, TAny* a1, TAny* a2); |
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68 |
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69 private: |
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70 DProcess* iOwner; |
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71 }; |
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72 |
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73 |
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74 /** |
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75 Class to hold a reference count and process pointer. |
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76 Each surface has a linked list of these owning processes. |
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77 The surface manager has a linked list of these to track connections. |
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78 @internalTechnology |
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79 */ |
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80 class TProcessListItem |
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81 { |
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82 public: |
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83 TProcessListItem* iNext; //pointer to next one in list |
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84 DProcess* iOwningProcess; //pointer to the process object which is being reference counted |
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85 TInt iCount; //reference count |
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86 }; |
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87 |
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88 |
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89 /** |
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90 Class to hold the information about a surface. |
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91 Each surface has a linked list of owners. The surfaces are arranged in a linked list, |
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92 with these objects being elements in the list. |
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93 @internalTechnology |
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94 */ |
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95 class TSurface //one of these per surface |
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96 { |
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97 public: |
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98 TSurface* iNext; //singly linked list, points to next surface |
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99 TSurfaceId iId; //the surface id |
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100 TSize iSize; //pixel width/height |
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101 TInt iBuffers; //number of buffers |
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102 TUidPixelFormat iPixelFormat; //pixel format |
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103 TInt iStride; //offset from start of one line to the next, in bytes |
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104 TInt iOffsetToFirstBuffer; //offset between the start of the surface memory and the start of the first pixel buffer |
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105 TInt iOffsetBetweenBuffers; //offset between pixel buffers |
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106 TInt iAlignment; //byte alignment of the pixel buffers |
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107 TBool iContiguous; //if it is in contiguous physical memory |
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108 DChunk* iChunk; //ptr to the shared chunk |
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109 RSurfaceManager::TCacheAttribute iCacheAttrib; //Caching attribute to create chunks memory |
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110 RSurfaceManager::THintPair iSurfaceHints[KMaxHintsPerSurface]; //Arbitrary key-value pairs associated with a surface |
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111 TBool iMappable; //Is the Surface Mappable |
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112 TProcessListItem* iOwners; //owner list. Singly linked list, points to next surface owner |
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113 |
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114 public: |
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115 TProcessListItem* ProcessOwnerInfo(const DProcess* aProcess); |
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116 }; |
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117 |
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118 |
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119 |
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120 |
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121 /** |
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122 Surface manager extension object. |
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123 There is one static instance of this in the kernel extension. |
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124 @internalTechnology |
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125 */ |
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126 class DSurfaceManager : public DBase |
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127 { |
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128 public: |
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129 TInt CreateSurface(const TDesC8* aConfig, TSurfaceId* aId); |
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130 TInt SurfaceInfo(const TSurfaceId* aId, TDes8* aInfo); |
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131 TInt OpenSurface(const TSurfaceId* aId); |
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132 TInt CloseSurface(const TSurfaceId* aId); |
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133 TInt MapSurface(const TSurfaceId* aId); |
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134 TInt AddConnection(const DProcess* iProcess); |
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135 void RemoveConnection(const DProcess* iProcess); |
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136 TInt CreateSurface(RSurfaceManagerDriver::TDeviceParam* aParam, TInt aChunkHandle); |
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137 TInt SynchronizeCache(RSurfaceManagerDriver::TDeviceParam* aId, RSurfaceManager::TSyncOperation aOperation); |
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138 TInt GetSurfaceHint(const TSurfaceId* aSurfaceId, RSurfaceManager::THintPair* aHintPair); |
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139 TInt SetSurfaceHint(const TSurfaceId* aSurfaceId, const RSurfaceManager::THintPair* aHintPair); |
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140 TInt AddSurfaceHint(const TSurfaceId* aSurfaceId, const RSurfaceManager::THintPair* aHintPair); |
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141 TInt GetBufferOffset(RSurfaceManagerDriver::TDeviceParam* aParam,TUint* aOffset); |
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142 TInt GetSurfaceManagerAttrib(RSurfaceManager::TSurfaceManagerAttrib* aAttrib,TInt* aValue); |
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143 private: |
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144 void GenerateSurfaceId(TSurfaceId& aId); |
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145 TInt CreateSurfaceChunk(const RSurfaceManager::TSurfaceCreationAttributes& attribs); |
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146 TInt ValidateAndCalculateChunkSize(RSurfaceManager::TSurfaceCreationAttributes& aAttribs, TInt& aOffset, |
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147 TUint& aActualBufferSize, const TBool aNewChunk = EFalse); |
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148 TInt ValidatePhysicalMemory(DChunk* aChunk, const RSurfaceManager::TSurfaceCreationAttributes& aAttribs, |
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149 TUint aBuffersize, TUint32& aMapAttr, TBool &aIsContiguous); |
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150 TSurface* FindSurfaceById(const TSurfaceId& aId); |
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151 void CloseSurfaceHandlesForProcess(const DProcess* iProcess); |
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152 TProcessListItem* FindConnectedProcess(const DProcess* aProcess); |
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153 TInt FindHintKey(const RSurfaceManager::THintPair* aHints, TUint32 aKey) const; |
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154 TBool SortHints(RSurfaceManager::THintPair* aHints, TInt aNumberOfHints) const; |
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155 TInt InsertHintKey(RSurfaceManager::THintPair* aHints, const RSurfaceManager::THintPair& aHintPair) const; |
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156 |
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157 private: |
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158 TSurface* iSurfacesIndex[KMaxLists]; // A table with elements pointing to the head of each singly linked list |
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159 NFastMutex iMutex; // Mutex to protect access to surface lists |
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160 TProcessListItem* iConnectedProcesses; //reference counted list of processes connected to the driver |
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161 }; |
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162 |
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163 |
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164 #endif |
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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 |
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