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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 #include "directgdidriverimpl.h" |
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17 #include "directgdiimagetargetimpl.h" |
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18 #include "directgdiimagesourceimpl.h" |
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19 #include "directgdiadapter.h" |
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20 #include "directgdiimageref.h" |
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21 #include "vgengine.h" |
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22 #include "confighelper.h" |
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23 #include <graphics/directgdiimagetarget.h> |
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24 #include <graphics/sgresource.h> |
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25 #include <fbs.h> |
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26 #include <bitdev.h> |
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27 |
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28 #ifndef __WINS__ |
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29 // Static member variable |
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30 XDirectGdiDriverProcessState CDirectGdiDriverImpl::gProcessState; |
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31 #endif |
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32 |
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33 /** |
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34 Handles an EGL failure. It may either set the passed-in TInt to a Symbian OS-mapped error code, |
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35 or panic the specified panic code, depending on the egl failure. Done as a macro so the line number is reported. |
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36 */ |
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37 #define HANDLE_EGL_ERROR(err, panic) \ |
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38 { \ |
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39 const EGLint eglError = eglGetError(); \ |
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40 if (eglError == EGL_BAD_ALLOC) \ |
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41 err = KErrNoMemory; \ |
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42 else if (eglError == EGL_CONTEXT_LOST) \ |
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43 err = KErrDied; \ |
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44 else if (eglError != EGL_SUCCESS) \ |
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45 { \ |
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46 TBuf16<256> _message; \ |
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47 _message.Format(_L16("EGL Error: %x\n"), eglError); \ |
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48 GRAPHICS_LOGD_DEBUG(_message); \ |
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49 GRAPHICS_ASSERT_DEBUG(eglError == EGL_SUCCESS, panic); \ |
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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 Populates the config hash map with matching EGL configs, based on the supported pixel types. |
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55 |
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56 @param aDisplay A valid EGL display to retrieve EGL configs for. |
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57 |
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58 @panic DGDIAdapter 24, if no suitable EGL configs are present (debug-only). |
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59 @panic DGDIAdapter 25, if no exact matching EGL config can be found. |
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60 @panic DGDIAdapter 29, if RSgImage::GetPixelFormats returns pixel count <= 0. |
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61 |
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62 @pre EGL has been initialised by eglInitialize(). |
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63 @post The supported EGL configs are stored in the hash map. |
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64 |
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65 @return KErrNoError if successful, KErrNotReady if EGL was not initialised, otherwise one of the |
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66 system-wide error codes. |
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67 */ |
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68 TInt CDirectGdiDriverImpl::InitializeEglConfigs(EGLDisplay aDisplay) |
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69 { |
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70 #ifdef _DEBUG_DIRECTGDI |
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71 GRAPHICS_LOG_DEBUG("InitializeEglConfigs"); |
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72 #endif |
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73 TInt err = KErrNone; |
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74 |
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75 // Get EGL configs upfront and store them in a hash map |
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76 EGLint configSize = 0; |
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77 EGLConfig *configs = NULL; |
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78 |
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79 // Query RsgImage for the number of supported target pixel formats. Then we know how much memory should be |
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80 // allocated to the pixelformats array. |
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81 TInt count = 0; |
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82 TSgImageInfo imageInfo; |
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83 imageInfo.iUsage = ESgUsageDirectGdiTarget; |
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84 imageInfo.iSizeInPixels = TSize(1,1); |
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85 TUidPixelFormat* pixelFormats = NULL; |
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86 err = RSgImage::GetPixelFormats(imageInfo, NULL, count); |
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87 GRAPHICS_ASSERT_DEBUG(count > 0, EDirectGdiPanicNoValidPixelFormats); |
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88 |
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89 if (err == KErrNone) |
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90 { |
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91 pixelFormats = new TUidPixelFormat[count]; |
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92 if (pixelFormats == NULL) |
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93 { |
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94 err = KErrNoMemory; |
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95 } |
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96 } |
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97 |
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98 if (err == KErrNone) |
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99 { |
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100 err = RSgImage::GetPixelFormats(imageInfo, pixelFormats, count); |
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101 if (!eglGetConfigs(aDisplay, configs, 0, &configSize) && configSize) |
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102 { |
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103 HANDLE_EGL_ERROR(err, EDirectGdiPanicNoAvailableConfigs); |
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104 } |
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105 } |
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106 |
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107 if (err == KErrNone) |
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108 { |
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109 configs = new EGLConfig[configSize]; |
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110 if (configs == NULL) |
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111 { |
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112 err = KErrNoMemory; |
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113 } |
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114 } |
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115 |
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116 for (TInt i = 0; (i < count) && (err == KErrNone); ++i) |
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117 { |
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118 // Finds a suitable config to map to this bitmap. |
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119 TInt selPixmapAttribs = TConfigHelper::MatchPixelType(pixelFormats[i]); |
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120 EGLint numConfigs = 0; |
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121 if (!eglChooseConfig(aDisplay, TConfigHelper::KSurfaceAttribs[selPixmapAttribs], configs, configSize, &numConfigs)) |
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122 { |
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123 HANDLE_EGL_ERROR(err, EDirectGdiPanicNoMatchingConfig); |
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124 break; |
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125 } |
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126 GRAPHICS_ASSERT_ALWAYS(numConfigs >= 1, EDirectGdiPanicNoAvailableConfigs); |
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127 // Find an exact matching config from the available configs. |
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128 TInt match = TConfigHelper::GetSuitablePixmapConfigIndex(aDisplay, configs, numConfigs, selPixmapAttribs); |
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129 GRAPHICS_ASSERT_ALWAYS(match >= 0, EDirectGdiPanicNoMatchingConfig); |
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130 EGLConfig currentConfig = configs[match]; |
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131 |
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132 // Store this matching config and the pixel type in the hash map. |
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133 err = iPixelConfigMap.Insert(selPixmapAttribs, currentConfig); |
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134 } |
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135 |
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136 delete [] configs; |
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137 delete [] pixelFormats; |
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138 |
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139 return err; |
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140 } |
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141 |
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142 /** |
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143 Constructor to allocate memory to CDirectGdiDriverImpl object. |
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144 |
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145 @param aInternal On success, will store a pointer to the newly created CDirectGdiDriverImpl. |
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146 @param aLibrary |
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147 @return KErrNone if successful, otherwise one of the system-wide error codes. |
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148 */ |
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149 TInt CDirectGdiDriverImpl::New(CDirectGdiDriverInternal*& aInternal, RLibrary aLibrary) |
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150 { |
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151 CDirectGdiDriverImpl* self = new CDirectGdiDriverImpl(aLibrary); |
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152 if(!self) |
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153 return KErrNoMemory; |
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154 TInt err = self->Construct(); |
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155 if(err != KErrNone) |
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156 { |
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157 aInternal = NULL; |
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158 delete self; |
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159 return err; |
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160 } |
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161 aInternal = self; |
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162 return err; |
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163 } |
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164 |
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165 /** |
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166 Destructor - frees the memory for the hashmaps and the source and target arrays. |
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167 |
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168 @panic DGDIAdapter 45, if images are still in the source or target image array (debug-only). |
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169 */ |
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170 CDirectGdiDriverImpl::~CDirectGdiDriverImpl() |
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171 { |
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172 // Check that there are no drawbles left in the drawable array |
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173 GRAPHICS_ASSERT_DEBUG(iSourceArray.Count() == 0, EDirectGdiPanicItemsLeftInImageArray); |
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174 GRAPHICS_ASSERT_DEBUG(iTargetArray.Count() == 0, EDirectGdiPanicItemsLeftInImageArray); |
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175 |
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176 iSourceArray.Close(); |
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177 iTargetArray.Close(); |
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178 |
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179 delete iVgImageCache; |
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180 |
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181 THashMapIter<TInt, EGLContext> contextIter(iPixelContextMap); |
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182 const EGLContext* context = contextIter.NextValue(); |
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183 while (context) |
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184 { |
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185 eglDestroyContext(iDisplay, *context); |
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186 context = contextIter.NextValue(); |
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187 } |
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188 iPixelContextMap.Close(); |
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189 iPixelConfigMap.Close(); |
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190 delete iGlyphImageStorage; |
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191 |
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192 eglMakeCurrent(iDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); |
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193 // This will terminate the display if it is the last driver. |
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194 ProcessState().CloseDriver(iDisplay); |
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195 eglReleaseThread(); |
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196 |
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197 SgDriver::Close(); |
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198 } |
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199 |
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200 /** |
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201 @see CDirectGdiDriver::Flush() |
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202 */ |
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203 void CDirectGdiDriverImpl::Flush() |
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204 { |
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205 vgFlush(); |
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206 } |
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207 |
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208 /** |
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209 @see CDirectGdiDriver::Finish() |
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210 */ |
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211 void CDirectGdiDriverImpl::Finish() |
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212 { |
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213 // Call eglWaitClient() instead of vgFinish() because MBX EGL implementation currently |
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214 // does nothing with a vgFinish(). |
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215 if (eglWaitClient() == EGL_FALSE) |
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216 { |
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217 TInt err = KErrNone; |
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218 HANDLE_EGL_ERROR(err, EDirectGdiPanicFinish); |
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219 SetError(err); |
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220 } |
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221 |
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222 } |
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223 |
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224 /** |
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225 @see CDirectGdiDriver::GetError() |
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226 |
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227 If no error has been reported explicitly, or SetError() has not been called, it will instead return |
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228 the first (if any) OpenVG error to occur since GetError() was last called. |
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229 */ |
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230 TInt CDirectGdiDriverImpl::GetError() |
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231 { |
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232 // Call vgGetError() even when iErrorCode is already set, so that any OpenVG error state is |
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233 // cleared and not reported in future. |
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234 const TInt vgErrorCode = GetVgError(); |
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235 |
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236 if (iErrorCode == KErrNone) |
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237 { |
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238 iErrorCode = vgErrorCode; |
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239 } |
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240 TInt error = iErrorCode; |
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241 iErrorCode = KErrNone; |
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242 return error; |
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243 } |
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244 |
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245 /** |
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246 @see CDirectGdiDriver::CreateDrawableSource() |
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247 |
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248 For image resource creates a DirectGDI adaptation-specific resource from the given RSgDrawable resource so |
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249 it can be drawn using the DirectGDI rendering API. Creates an EGLImage, then a VGImage from the |
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250 passed RSgImage and associates the new source with these images. Sources that are successfully created |
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251 are added to an array of sources so that they can be closed and deleted correctly at a later stage. |
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252 Note that an image source cannot be created before an image target has been created and activated. |
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253 This is a limitation of OpenVG as a VG context must exist before an image source can be created. |
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254 |
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255 @param aHandleRet Handle of newly created drawable source, must be KNullHandle (is checked by generic driver). |
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256 @param aSgDrawable The RSgDrawable object to use when creating the drawable source. An attempt is made to |
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257 match the pixel format of the new EGL surface with the pixel format of this RSgImage. |
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258 |
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259 @pre CDirectGdiDriver object has been initialised from the calling thread and a target has been activated. |
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260 aHandleRet is KNullHandle. |
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261 @post The DirectGDI adaptation-specific resource that is bound to the given |
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262 drawable resource is created and this handle is now associated with it. The reference |
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263 counter on the drawable resource is incremented. The CDirectGdiDriver for this thread |
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264 is now aware of and owns the adaptation-specific resource. |
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265 |
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266 @return KErrNone if successful, KErrArgument if the drawable resource is not valid, |
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267 KErrNotSupported if the drawable resource is not created with the type (KSgImageTypeUid), |
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268 otherwise one of the system-wide error codes. |
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269 */ |
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270 TInt CDirectGdiDriverImpl::CreateDrawableSource(TInt& aHandleRet, const RSgDrawable& aSgDrawable) |
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271 { |
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272 TUid typeUid = aSgDrawable.DrawableType(); |
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273 if(typeUid != KSgImageTypeUid) |
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274 { |
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275 return KErrNotSupported; |
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276 } |
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277 const RSgImage* image = reinterpret_cast<const RSgImage*>(&aSgDrawable); |
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278 CDirectGdiImageSourceImpl* imageSource = NULL; |
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279 TInt err = CDirectGdiImageSourceImpl::New(imageSource, *this, *image); |
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280 |
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281 if (err == KErrNone) |
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282 { |
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283 aHandleRet = reinterpret_cast<TInt>(imageSource); |
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284 } |
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285 |
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286 return err; |
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287 } |
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288 |
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289 /** |
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290 @see CDirectGdiDriver::CreateDrawableSource() |
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291 |
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292 Destroys the DirectGDI adaptation-specific resource associated with this handle. |
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293 Calling this method on a handle that is not associated with any DirectGDI specific |
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294 resource will do nothing. Once Close() is called, this handle can be reused. The handle |
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295 is set to KNullHandle. |
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296 |
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297 @param aHandle A reference to a valid handle to a RDirectGdiDrawableSource object which is |
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298 to be closed. |
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299 |
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300 @pre CDirectGdiDriver object has been initialised from the calling thread. |
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301 @post The DirectGDI adaptation-specific resource associated with this handle will |
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302 be destroyed (at any time preferred by the adaptation). This handle is no longer |
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303 associated with a DirectGDI adaptation-specific resource. The reference counter of |
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304 the underlying drawable resource is decremented. aHandle is set to KNullHandle. |
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305 |
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306 @panic DGDIAdapter 37, if an image source cannot be created from the passed handle. |
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307 */ |
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308 void CDirectGdiDriverImpl::CloseDrawableSource(TInt& aHandle) |
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309 { |
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310 CDirectGdiImageSourceImpl* imageSource = GetImageSourceFromHandle(aHandle); |
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311 GRAPHICS_ASSERT_ALWAYS(imageSource, EDirectGdiPanicCloseDrawableHandleFailure); |
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312 |
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313 // Decrement the reference count on this image source. If it reaches zero, it will |
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314 // remove itself from the source array and delete itself. |
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315 imageSource->Close(); |
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316 aHandle = KNullHandle; |
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317 } |
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318 |
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319 |
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320 /** |
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321 @see CDirectGdiDriver::CreateImageTarget() |
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322 |
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323 Allocates and constructs a CDirectGdiImageTargetImpl object, and associates it with aHandleRet. |
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324 |
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325 @param aHandleRet Handle of newly created Image Target, must be KNullHandle (is checked by generic driver). |
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326 @param aSgImage The RSgImage to associate with the created image target. An attempt is made to match |
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327 the pixel format of the new EGL surface with the pixel format of this RSgImage. |
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328 |
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329 @pre CDirectGdiDriver object has been initialised from the calling thread. |
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330 The image resource has been fully constructed and created with the correct usage |
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331 that allows it to be used as a DirectGDI target. aHandleRet is KNullHandle. |
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332 |
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333 @post The DirectGDI adaptation-specific resource that is bound to the given image |
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334 resource is created and this handle is now associated with it. The reference counter |
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335 on the image resource is incremented. |
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336 |
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337 @return KErrNone if successful, KErrArgument if the image resource is not valid, |
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338 KErrNotSupported if the image resource is not created with the correct |
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339 usage, otherwise one of the system-wide error codes. |
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340 */ |
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341 TInt CDirectGdiDriverImpl::CreateImageTarget(TInt& aHandleRet, const RSgImage& aSgImage) |
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342 { |
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343 CDirectGdiImageTargetImpl* imageTarget = NULL; |
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344 TInt err = CDirectGdiImageTargetImpl::New(imageTarget, *this, aSgImage, iPixelContextMap, iPixelConfigMap, iSharedContext); |
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345 |
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346 if (err == KErrNone) |
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347 { |
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348 // Return the handle to the newly created image target. |
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349 aHandleRet = reinterpret_cast<TInt>(imageTarget); |
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350 } |
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351 |
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352 return err; |
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353 } |
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354 |
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355 /** |
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356 Destroys the DirectGDI adaptation-specific resource associated with this handle. |
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357 Calling this method on a handle that is not associated with any DirectGDI adaptation- |
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358 specific resource will do nothing. Once Close() is called, this handle can be reused. |
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359 |
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360 @param aHandle A handle to a RDirectGdiImageTarget object to be closed. |
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361 |
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362 @pre CDirectGdiDriver object has been initialised from the calling thread. |
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363 |
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364 @post The DirectGDI specific resource associated with this handle will be destroyed |
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365 if the reference count falls to zero. This handle is no longer associated with |
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366 a DirectGDI specific resource. The reference counter of the underlying image |
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367 resource is decremented. aHandle is set to KNullHandle. |
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368 |
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369 @panic DGDIAdapter 37, if the image source associated with aHandle is NULL. |
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370 */ |
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371 void CDirectGdiDriverImpl::CloseImageTarget(TInt& aHandle) |
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372 { |
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373 CDirectGdiImageTargetImpl* imageTarget = GetImageTargetFromHandle(aHandle); |
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374 GRAPHICS_ASSERT_ALWAYS(imageTarget, EDirectGdiPanicCloseDrawableHandleFailure); |
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375 |
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376 // Decrement the reference count on this image target. If the reference count reaches zero, |
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377 // it is deleted and removed from the targets array. |
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378 imageTarget->Close(); |
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379 aHandle = KNullHandle; |
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380 } |
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381 |
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382 /** |
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383 Instantiates an adaptation-specific rendering engine. |
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384 |
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385 @param aDirectGdiEngine Reference to instantiated engine. |
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386 |
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387 @pre CDirectGdiDriver object has been initialised from the calling thread. |
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388 |
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389 @return KErrNone if the engine is constructed, else KErrNoMemory. |
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390 */ |
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391 TInt CDirectGdiDriverImpl::CreateEngine(MDirectGdiEngine*& aDirectGdiEngine) |
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392 { |
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393 TInt result = KErrNone; |
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394 aDirectGdiEngine = new CVgEngine(*this); |
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395 if (aDirectGdiEngine == NULL) |
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396 { |
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397 result = KErrNoMemory; |
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398 } |
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399 return result; |
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400 } |
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401 |
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402 /** |
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403 Unbinds target from rendering engine and marks it for deletion. |
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404 NOTE: Currently this means just deleting the engine. |
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405 |
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406 @param aDirectGdiEngine Engine to operate on. |
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407 |
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408 @pre CDirectGdiDriver object has been initialised from the calling thread. |
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409 |
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410 @panic DGDIAdapter 38, if the engine is NULL. |
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411 */ |
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412 void CDirectGdiDriverImpl::DestroyEngine(MDirectGdiEngine* aDirectGdiEngine) |
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413 { |
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414 GRAPHICS_ASSERT_ALWAYS(aDirectGdiEngine, EDirectGdiPanicDestroyNullEngine); |
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415 CVgEngine* actualEngine = static_cast<CVgEngine*>(aDirectGdiEngine); |
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416 delete actualEngine; |
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417 } |
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418 |
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419 /** |
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420 The only extension interface supported by this implementation is MDirectGdiDriverCacheSize. |
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421 |
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422 @see CDirectGdiDriver::GetInterface() |
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423 */ |
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424 TInt CDirectGdiDriverImpl::GetInterface(TUid aInterfaceId, TAny*& aInterface) |
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425 { |
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426 aInterface = NULL; |
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427 TInt err = KErrNone; |
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428 switch (aInterfaceId.iUid) |
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429 { |
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430 case KDirectGdiDriverCacheSizeUid: |
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431 { |
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432 aInterface = static_cast<MDirectGdiDriverCacheSize*>(this); |
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433 break; |
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434 } |
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435 default: |
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436 err = KErrExtensionNotSupported; |
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437 break; |
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438 } |
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439 return err; |
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440 } |
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441 |
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442 CDirectGdiDriverImpl::CDirectGdiDriverImpl(RLibrary aLibrary) |
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443 : CDirectGdiDriverInternal(aLibrary), |
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444 iDisplay(EGL_NO_DISPLAY) |
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445 { |
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446 } |
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447 /** |
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448 Performs the second phase of construction. |
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449 |
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450 @pre CDirectGdiDriver object has been initialised from the calling thread. |
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451 @post EGL has been initialised. SgDriver has been opened. |
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452 |
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453 @panic DGDIAdapter 36, if eglGetDisplay() fails. |
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454 @panic DGDIAdapter 35, if eglInitialize() fails. |
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455 @panic DGDIAdapter 23, if eglBindAPI() fails. |
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456 @return KErrNone if successful, KErrNotFound if no implementation of the Graphics Resource API is found, |
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457 KErrNotSupported if the version of EGL is less than required (1.2), otherwise one of the |
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458 system-wide error codes. |
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459 */ |
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460 TInt CDirectGdiDriverImpl::Construct() |
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461 { |
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462 TInt err = KErrNone; |
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463 iSharedContext = EGL_NO_CONTEXT; |
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464 |
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465 // First thing is to check whether the mutex for the Process State was successfully created. |
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466 // If not, it's a fatal error. If it is, we must increment the reference count on the mutex as |
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467 // early as possible to make the creation/destruction of the display thread-safe. |
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468 err = ProcessState().MutexCreationStatus(); |
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469 if (err == KErrNone) |
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470 { |
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471 ProcessState().OpenDriver(); |
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472 } |
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473 |
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474 if (err == KErrNone) |
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475 { |
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476 err = SgDriver::Open(); |
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477 } |
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478 |
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479 if (err == KErrNone) |
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480 { |
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481 // Create display object |
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482 iDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); |
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483 GRAPHICS_ASSERT_ALWAYS(iDisplay != EGL_NO_DISPLAY, EDirectGdiPanicNoDisplay); |
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484 |
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485 // Initialise the display. If it is already initialised, EGL will return quickly. |
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486 EGLint major, minor; |
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487 if (!eglInitialize(iDisplay, &major, &minor)) |
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488 { |
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489 iDisplay = EGL_NO_DISPLAY; |
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490 HANDLE_EGL_ERROR(err, EDirectGdiPanicInitializeDisplay); |
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491 } |
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492 else if (major < 1 || (major == 1 && minor < 2)) |
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493 { |
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494 // Atleast EGL 1.2 needs to be available. |
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495 err = KErrNotSupported; |
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496 } |
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497 } |
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498 |
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499 if (err == KErrNone) |
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500 { |
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501 // Let EGL know we will use it for OpenVG |
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502 if(!eglBindAPI(EGL_OPENVG_API)) |
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503 { |
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504 HANDLE_EGL_ERROR(err, EDirectGdiPanicBindApi); |
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505 } |
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506 } |
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507 |
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508 if (err == KErrNone) |
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509 { |
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510 iGlyphImageStorage = new CFontGlyphImageStorage(KDirectGdiAdapterDefaultMaxGlyphImageCacheSize); |
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511 if(!iGlyphImageStorage) |
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512 { |
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513 err = KErrNoMemory; |
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514 } |
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515 } |
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516 |
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517 if (err == KErrNone) |
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518 { |
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519 iVgImageCache = new CVgImageCache(KDirectGdiAdapterDefaultMaxImageCacheSize); |
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520 if(!iVgImageCache) |
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521 { |
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522 err = KErrNoMemory; |
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523 } |
|
524 } |
|
525 |
|
526 if (err == KErrNone) |
|
527 { |
|
528 err = ProcessState().Initialize(iDisplay); |
|
529 } |
|
530 |
|
531 if (err == KErrNone) |
|
532 { |
|
533 err = InitializeEglConfigs(iDisplay); |
|
534 } |
|
535 |
|
536 return err; |
|
537 } |
|
538 |
|
539 /** |
|
540 @see CDirectGdiDriver::SetError() |
|
541 |
|
542 In the event that OpenVG's error state has been set, it will be used as the driver's error state, |
|
543 overriding aErr. |
|
544 |
|
545 @param aErr The error code to be set. |
|
546 @pre CDirectGdiDriver object has been initialised from the calling thread. |
|
547 @post The error state is set to the current OpenVG error state, otherwise aErr, if the current error state |
|
548 is empty. |
|
549 */ |
|
550 void CDirectGdiDriverImpl::SetError(TInt aErr) |
|
551 { |
|
552 if( iErrorCode == KErrNone ) |
|
553 { |
|
554 iErrorCode = GetVgError(); |
|
555 if (iErrorCode == KErrNone) |
|
556 { |
|
557 iErrorCode = aErr; |
|
558 } |
|
559 } |
|
560 } |
|
561 |
|
562 /** |
|
563 Static function. Converts the current OpenVG error state (if any) to a standard Symbian error code. |
|
564 |
|
565 @panic DGDIAdapter 64, if the error code received from OpenVG is due to misuse of OpenVG rather |
|
566 than a runtime error. |
|
567 @return KErrGeneral if the OpenVG error code not recognised, otherwise a system-wide error |
|
568 code converted from the OpenVG error code. |
|
569 */ |
|
570 TInt CDirectGdiDriverImpl::GetVgError() |
|
571 { |
|
572 TInt error = KErrGeneral; |
|
573 switch(vgGetError()) |
|
574 { |
|
575 case VG_NO_ERROR: |
|
576 error = KErrNone; |
|
577 break; |
|
578 case VG_BAD_HANDLE_ERROR: |
|
579 error = KErrBadHandle; |
|
580 break; |
|
581 case VG_ILLEGAL_ARGUMENT_ERROR: |
|
582 error = KErrArgument; |
|
583 break; |
|
584 case VG_OUT_OF_MEMORY_ERROR: |
|
585 error = KErrNoMemory; |
|
586 break; |
|
587 default: |
|
588 // Any other error is due to DirectGDI using OpenVG incorrectly somewhere. |
|
589 GRAPHICS_PANIC_DEBUG(EDirectGdiPanicVgError); |
|
590 } |
|
591 return error; |
|
592 } |
|
593 |
|
594 /** |
|
595 Sets the current engine as the most recent engine which has been activated. |
|
596 |
|
597 @param aCurrentEngine The pointer to the most recent engine. |
|
598 */ |
|
599 void CDirectGdiDriverImpl::SetCurrentEngine(CVgEngine* aCurrentEngine) |
|
600 { |
|
601 iCurrentEngine = aCurrentEngine; |
|
602 } |
|
603 |
|
604 /** |
|
605 Checks whether the given engine is current or not, so that the OpenVG state can be reset. |
|
606 |
|
607 @param aCurrentEngine The pointer to an engine. |
|
608 @return ETrue if it is the current engine, else EFalse. |
|
609 */ |
|
610 TBool CDirectGdiDriverImpl::IsCurrentEngine(const CVgEngine* aCurrentEngine) const |
|
611 { |
|
612 return (iCurrentEngine == aCurrentEngine); |
|
613 } |
|
614 |
|
615 /** |
|
616 Checks whether this target is current or not, so that the EGL state can be reset. |
|
617 |
|
618 @param aCurrentTarget The pointer to a target. |
|
619 @return ETrue if it is the current target, else EFalse. |
|
620 */ |
|
621 TBool CDirectGdiDriverImpl::IsCurrentTarget(const CDirectGdiImageTargetImpl* aCurrentTarget) const |
|
622 { |
|
623 return (iCurrentTarget == aCurrentTarget); |
|
624 } |
|
625 |
|
626 /** |
|
627 Sets the current target as the most recent target which has been activated. |
|
628 |
|
629 @param aCurrentTarget The pointer to the most recent target. |
|
630 */ |
|
631 void CDirectGdiDriverImpl::SetCurrentTarget(CDirectGdiImageTargetImpl* aCurrentTarget) |
|
632 { |
|
633 iCurrentTarget = aCurrentTarget; |
|
634 } |
|
635 |
|
636 /** |
|
637 Activates the specified target and increments its reference count as it can be shared across many |
|
638 DirectGDI contexts. |
|
639 |
|
640 @param aRenderingTarget The target object which is to be activated. |
|
641 */ |
|
642 void CDirectGdiDriverImpl::Activate(CDirectGdiImageTargetImpl* aRenderingTarget) |
|
643 { |
|
644 // Reactivate() does the same activation |
|
645 Reactivate(aRenderingTarget); |
|
646 aRenderingTarget->Open(); |
|
647 } |
|
648 |
|
649 /** |
|
650 Reactivates the specified target, without affecting its reference count. |
|
651 |
|
652 @param aRenderingTarget The target to be reactivated. |
|
653 |
|
654 @panic DGDIAdapter 2, if eglGetError() returns an error we can't handle. |
|
655 */ |
|
656 void CDirectGdiDriverImpl::Reactivate(CDirectGdiImageTargetImpl* aRenderingTarget) |
|
657 { |
|
658 if(!aRenderingTarget->Activate()) |
|
659 { |
|
660 TInt error = KErrNone; |
|
661 HANDLE_EGL_ERROR(error, EDirectGdiPanicUnexpectedError); |
|
662 if(error == KErrNoMemory) |
|
663 { |
|
664 SetError(error); |
|
665 } |
|
666 // Can check here whether error == KErrDied, which signifies an EGL_CONTEXT_LOST error. |
|
667 // due to a power management event. Then need to destroy and recreate all EGLContexts used. |
|
668 // This is not implemented as the EGL used with this reference adaptation does not produce this error. |
|
669 // Following pseudocode will achieve this: |
|
670 // 1. For each context stored in iPixelMapContext: |
|
671 // 1a. Destroy context. |
|
672 // 1b. Create replacement context with same parameters. |
|
673 // 1c. Search through all rendering targets replacing the context stored (if it matches with the one just destroyed) with the new one. |
|
674 // 2. Try activating the rendering target again. |
|
675 } |
|
676 } |
|
677 |
|
678 /** |
|
679 Deactivates the target if it was the current target, and decrements its reference count as it can |
|
680 be shared across many DirectGDI contexts. |
|
681 |
|
682 @param aRenderingTarget The target object which you want to deactivate. |
|
683 */ |
|
684 void CDirectGdiDriverImpl::Deactivate(CDirectGdiImageTargetImpl* aRenderingTarget) |
|
685 { |
|
686 aRenderingTarget->Close(); |
|
687 } |
|
688 |
|
689 /** |
|
690 Helper function for removing a pointer to a CDirectGdiImageRef object from the source image array. |
|
691 @param aImage A pointer to a CDirectGdiImageRef source object. |
|
692 @return KErrNone if successful, KErrNotFound if no suitable object pointer can be found, |
|
693 otherwise one of the other system wide error codes. |
|
694 */ |
|
695 TInt CDirectGdiDriverImpl::UnregisterSourceImage(const CDirectGdiImageSourceImpl& aImage) |
|
696 { |
|
697 TInt index = -1; |
|
698 TInt err = iSourceArray.FindInAddressOrder(&aImage, index); |
|
699 if (err == KErrNone) |
|
700 { |
|
701 iSourceArray.Remove(index); |
|
702 iSourceArray.GranularCompress(); |
|
703 } |
|
704 |
|
705 return err; |
|
706 } |
|
707 |
|
708 /** |
|
709 Helper function for removing a pointer to a CDirectGdiImageRef object from the target image array. |
|
710 @param aImage A pointer to a CDirectGdiImageRef source object. |
|
711 @return KErrNone if successful, KErrNotFound if no suitable object pointer can be found, |
|
712 otherwise one of the other system wide error codes. |
|
713 */ |
|
714 TInt CDirectGdiDriverImpl::UnregisterTargetImage(const CDirectGdiImageTargetImpl& aImage) |
|
715 { |
|
716 TInt index = -1; |
|
717 TInt err = iTargetArray.FindInAddressOrder(&aImage, index); |
|
718 if (err == KErrNone) |
|
719 { |
|
720 iTargetArray.Remove(index); |
|
721 iTargetArray.GranularCompress(); |
|
722 } |
|
723 |
|
724 return err; |
|
725 } |
|
726 |
|
727 /** |
|
728 Helper function to convert a handle for a RDirectGdiDrawableSource object to a CDirectGdiImageSourceImpl |
|
729 object. In debug builds, it also checks that the image source was actually created by this driver and |
|
730 exists in the array of image sources. |
|
731 |
|
732 @param aHandle A valid handle to a RDirectGdiDrawableSource object. |
|
733 @return A pointer to a CDirectGdiImageSourceImpl object that the handle represents. |
|
734 */ |
|
735 CDirectGdiImageSourceImpl* CDirectGdiDriverImpl::GetImageSourceFromHandle(TInt aHandle) const |
|
736 { |
|
737 #ifdef _DEBUG |
|
738 CheckSourceIsValid(aHandle); |
|
739 #endif // _DEBUG |
|
740 |
|
741 CDirectGdiImageSourceImpl* source = reinterpret_cast<CDirectGdiImageSourceImpl*>(aHandle); |
|
742 return source; |
|
743 } |
|
744 |
|
745 /** |
|
746 Helper function to convert a handle for a RDirectGdiImageTarget object to a CDirectGdiImageTargetImpl |
|
747 object. In debug builds, it also checks that the image target was actually created by this driver and |
|
748 exists in the array of image target. |
|
749 |
|
750 @param aHandle A valid handle to a RDirectGdiImageTarget object. |
|
751 @return A pointer to a CDirectGdiImageTargetImpl object that the handle represents. |
|
752 */ |
|
753 CDirectGdiImageTargetImpl* CDirectGdiDriverImpl::GetImageTargetFromHandle(TInt aHandle) const |
|
754 { |
|
755 #ifdef _DEBUG |
|
756 CheckTargetIsValid(aHandle); |
|
757 #endif // _DEBUG |
|
758 |
|
759 CDirectGdiImageTargetImpl* target = reinterpret_cast<CDirectGdiImageTargetImpl*>(aHandle); |
|
760 return target; |
|
761 } |
|
762 |
|
763 /** |
|
764 Allows the engine to check whether a resource is an image source or not, given its handle. |
|
765 If the image is an image source, it will be in the array of image sources. |
|
766 |
|
767 @param aHandle The handle to check for being an image source. |
|
768 @return ETrue if the passed handle is for an image source, EFalse otherwise. |
|
769 */ |
|
770 TBool CDirectGdiDriverImpl::IsImageSource(TInt aHandle) const |
|
771 { |
|
772 CDirectGdiImageRef* source = reinterpret_cast<CDirectGdiImageRef*>(aHandle); |
|
773 TInt index = -1; |
|
774 return (iSourceArray.FindInAddressOrder(source, index) == KErrNone); |
|
775 } |
|
776 |
|
777 #ifdef _DEBUG |
|
778 /** |
|
779 Debug-only helper function to check that a source object has been created by this driver. |
|
780 If it has been created by this driver it will exist in the source array. |
|
781 |
|
782 @panic DGDIAdapter 32, if the source can not be found in the source array. |
|
783 */ |
|
784 void CDirectGdiDriverImpl::CheckSourceIsValid(TInt aHandle) const |
|
785 { |
|
786 // Debug only check to make sure the handle exists in the array of source objects |
|
787 // that have been created by this driver |
|
788 CDirectGdiImageRef* source = reinterpret_cast<CDirectGdiImageRef*>(aHandle); |
|
789 TInt index = -1; |
|
790 TInt err = iSourceArray.FindInAddressOrder(source, index); |
|
791 GRAPHICS_ASSERT_ALWAYS(err == KErrNone, EDirectGdiPanicResourceHandleNotFound); |
|
792 } |
|
793 |
|
794 /** |
|
795 Debug-only helper function to check that a target object has been created by this driver. |
|
796 If it has been created by this driver it will exist in the target array. |
|
797 |
|
798 @panic DGDIAdapter 32, if the target is not found in the target array. |
|
799 */ |
|
800 void CDirectGdiDriverImpl::CheckTargetIsValid(TInt aHandle) const |
|
801 { |
|
802 // Debug only check to make sure the handle exists in the array of target objects |
|
803 // that have been created by this driver |
|
804 CDirectGdiImageRef* target = reinterpret_cast<CDirectGdiImageRef*>(aHandle); |
|
805 TInt index = -1; |
|
806 TInt err = iTargetArray.FindInAddressOrder(target, index); |
|
807 GRAPHICS_ASSERT_ALWAYS(err == KErrNone, EDirectGdiPanicResourceHandleNotFound); |
|
808 } |
|
809 #endif // _DEBUG |
|
810 |
|
811 // VGImage cache APIs |
|
812 |
|
813 /** |
|
814 @see CVgImageCache::GetVgImageFromCache() |
|
815 */ |
|
816 VGImage CDirectGdiDriverImpl::GetVgImageFromCache(const CFbsBitmap& aBitmap, const TPoint& aOrigin) const |
|
817 { |
|
818 return iVgImageCache->GetVgImageFromBitmap(aBitmap, aOrigin); |
|
819 } |
|
820 |
|
821 /** |
|
822 @see CVgImageCache::AddImage() |
|
823 */ |
|
824 TBool CDirectGdiDriverImpl::AddVgImageToCache(const CFbsBitmap& aBitmap, VGImage& aImage, const TPoint& aOrigin) |
|
825 { |
|
826 return iVgImageCache->AddImage(aBitmap, aImage, aOrigin); |
|
827 } |
|
828 |
|
829 /** |
|
830 Gets the VGImage cache. |
|
831 @return The VGImage cache. |
|
832 */ |
|
833 CVgImageCache* CDirectGdiDriverImpl::VgImageCache() const |
|
834 { |
|
835 return iVgImageCache; |
|
836 } |
|
837 |
|
838 /** |
|
839 Gets the Glyph image storage. |
|
840 @return The Glyph image storage. |
|
841 */ |
|
842 CFontGlyphImageStorage* CDirectGdiDriverImpl::FontGlyphImageStorage() const |
|
843 { |
|
844 return iGlyphImageStorage; |
|
845 } |
|
846 |
|
847 /** |
|
848 Creates VG images which will be used to draw glyphs if the system runs out of memory |
|
849 */ |
|
850 TInt CDirectGdiDriverImpl::PreAllocateFontGlyphImages() |
|
851 { |
|
852 TInt res = KErrNotReady; |
|
853 if(iGlyphImageStorage) |
|
854 { |
|
855 res = iGlyphImageStorage->PreAllocateImages(); |
|
856 if(res == KErrNoMemory) |
|
857 {//try to clean bitmap cache |
|
858 iVgImageCache->ResetCache(); |
|
859 res = iGlyphImageStorage->PreAllocateImages(); |
|
860 if(res == KErrNoMemory) |
|
861 {//try to clean glyph image cache |
|
862 iGlyphImageStorage->CleanGlyphImageCache(); |
|
863 res = iGlyphImageStorage->PreAllocateImages(); |
|
864 } |
|
865 } |
|
866 } |
|
867 return res; |
|
868 } |
|
869 |
|
870 /** |
|
871 Registers the image source with this driver, by adding it to a list of internal image sources. |
|
872 @param aImage The image to register. |
|
873 @return KErrNone if successful, otherwise on of the system-wide error codes. |
|
874 */ |
|
875 TInt CDirectGdiDriverImpl::RegisterSourceImage(const CDirectGdiImageSourceImpl& aImage) |
|
876 { |
|
877 return iSourceArray.InsertInAddressOrder(&aImage); |
|
878 } |
|
879 |
|
880 /** |
|
881 Registers the image target with this driver, by adding it to a list of internal image targets. |
|
882 @param aImage The image to register. |
|
883 @return KErrNone if successful, otherwise on of the system-wide error codes. |
|
884 */ |
|
885 TInt CDirectGdiDriverImpl::RegisterTargetImage(const CDirectGdiImageTargetImpl& aImage) |
|
886 { |
|
887 return iTargetArray.InsertInAddressOrder(&aImage); |
|
888 } |
|
889 |
|
890 /** |
|
891 @see MDirectGdiDriverCacheSize::SetMaxImageCacheSize() |
|
892 */ |
|
893 TInt CDirectGdiDriverImpl::SetMaxImageCacheSize(TInt aSize) |
|
894 { |
|
895 return iVgImageCache->SetMaxCacheSize(aSize); |
|
896 } |
|
897 |
|
898 /** |
|
899 @see MDirectGdiDriverCacheSize::MaxImageCacheSize() |
|
900 */ |
|
901 TInt CDirectGdiDriverImpl::MaxImageCacheSize() const |
|
902 { |
|
903 return iVgImageCache->MaxCacheSize(); |
|
904 } |
|
905 |
|
906 /** |
|
907 @see MDirectGdiDriverCacheSize::SetMaxGlyphCacheSize() |
|
908 */ |
|
909 TInt CDirectGdiDriverImpl::SetMaxGlyphCacheSize(TInt aSize) |
|
910 { |
|
911 return iGlyphImageStorage->SetMaxGlyphCacheSize(aSize); |
|
912 } |
|
913 |
|
914 /** |
|
915 @see MDirectGdiDriverCacheSize::MaxGlyphCacheSize() |
|
916 */ |
|
917 TInt CDirectGdiDriverImpl::MaxGlyphCacheSize() const |
|
918 { |
|
919 return iGlyphImageStorage->MaxGlyphCacheSize(); |
|
920 } |