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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 // Surface Manager API |
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15 // |
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16 |
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17 #ifndef __SURFACE_HINTS_H__ |
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18 #define __SURFACE_HINTS_H__ |
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19 |
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20 //- Include Files ---------------------------------------------------------- |
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21 |
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22 #include <e32cmn.h> |
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23 |
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24 |
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25 //- Namespace --------------------------------------------------------------- |
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26 |
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27 namespace surfaceHints |
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28 { |
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29 |
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30 //- Constants --------------------------------------------------------------- |
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31 |
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32 /** Hint of the surface content. |
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33 @see TSurfaceContent for possible values |
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34 */ |
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35 const TInt KSurfaceContent = 0x1; |
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36 |
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37 /** Hint of the expected update rate of the surface content. |
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38 Value for a surface containing e.g. 25 fps video the value should be 25. |
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39 For a static UI element the value should be 0. |
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40 @see TSurfaceUpdate |
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41 */ |
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42 const TInt KSurfaceUpdate = 0x2; |
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43 |
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44 /** Hint whether the surface content is copy protected and can it be |
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45 shown on external displays. |
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46 @see TSurfaceProtection for possible values. |
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47 */ |
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48 const TInt KSurfaceProtection = 0x3; |
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49 |
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50 |
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51 /** Values used for the KSurfaceContent key */ |
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52 enum TSurfaceContent |
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53 { |
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54 /** No specific use-case */ |
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55 EGeneric, |
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56 /** Camera viewfinder frames */ |
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57 EViewFinder, |
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58 /** Images captured by camera */ |
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59 EStillImage, |
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60 /** Decoded video frames */ |
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61 EVideoPlayback, |
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62 /** Video frames from video telephony */ |
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63 EVideoTelephony, |
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64 /** EGL surface */ |
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65 EGfx, |
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66 /** Main UI surface */ |
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67 EUi, |
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68 /** Composition target surface */ |
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69 ECompositionTarget, |
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70 /** Indicates that the surface has to accessible by ARM. |
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71 This can be orr'ed with other TSurfaceContent enumerations. */ |
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72 EArmAccess = 0x80000000 |
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73 }; |
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74 |
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75 |
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76 /** Values used for the KSurfaceProtection key. The values are bitmasks and can be combined |
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77 * e.g. EAllowAnalogProtectionRequired | EAllowDigitalProtectionRequired. |
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78 */ |
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79 enum TSurfaceProtection |
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80 { |
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81 /** |
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82 * Not allowed on external outputs |
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83 */ |
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84 EAllowInternalOnly = 0x00000000, |
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85 |
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86 /** |
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87 * Allowed on all external outputs |
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88 */ |
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89 EAllowAllExternals = 0xFFFFFFFF, |
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90 |
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91 /** |
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92 * Allow passing content over analog outputs, |
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93 * e.g. composite and S-video |
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94 */ |
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95 EAllowAnalog = 0x00000010, |
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96 |
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97 /** |
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98 * Allow output over an analog output channel which has a protection |
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99 * mechanism |
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100 */ |
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101 EAllowAnalogProtectionRequired = 0x00000020, |
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102 |
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103 /** |
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104 * Allow passing content over digital outputs, |
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105 * e.g. DVI and HDMI |
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106 */ |
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107 EAllowDigital = 0x00000200, |
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108 |
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109 /** |
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110 * Licensed product must attempt to engage HDCP to protect the content. |
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111 * However it should be passed through to HDMI even if HDCP is not engaged or fails to engage. |
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112 */ |
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113 EAllowDigitalProtectionRequested = 0x00000400, |
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114 |
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115 /** |
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116 * Licensed product is required to engage HDCP to protect the content. |
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117 * If HDCP is not engaged or can not be engaged the content must not be passed through to HDMI. |
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118 */ |
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119 EAllowDigitalProtectionRequired = 0x00000800, |
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120 }; |
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121 |
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122 |
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123 class TSurfaceUpdate |
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124 { |
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125 /** Constructor. |
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126 @param aUpdateRate How often the surface content is redrawn per second. |
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127 @param aTearingFree When ETrue surface updates should be synchronized |
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128 with display refresh rate, otherwise surface can |
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129 be updated as fast as possible. |
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130 */ |
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131 inline TSurfaceUpdate(TUint aUpdateRate, TBool aTearingFree); |
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132 |
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133 /** Converts a value to TSurfaceUpdate */ |
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134 inline TSurfaceUpdate(TInt aValue); |
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135 |
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136 /** Converts TSurfaceUpdate to a signed integer, so it can be used as |
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137 a value for KSurfaceUpdate key. */ |
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138 inline operator TInt() const; |
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139 |
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140 /** Getter for surface update rate. |
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141 @return updates per second |
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142 */ |
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143 inline TUint UpdateRate() const; |
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144 |
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145 /** Getter for surface update synchronization. |
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146 @return ETrue - updates should be synchronized with display refresh rate, |
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147 EFalse - surface can be updated as fast as possible. |
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148 */ |
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149 inline TBool TearingFree() const; |
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150 |
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151 private: |
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152 TUint iValue; |
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153 }; |
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154 |
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155 |
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156 //- Forward Declarations ---------------------------------------------------- |
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157 |
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158 |
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159 //- Class Definitions ------------------------------------------------------- |
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160 |
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161 |
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162 //- Inline Functions -------------------------------------------------------- |
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163 |
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164 TSurfaceUpdate::TSurfaceUpdate(TUint aUpdateRate, TBool aTearingFree) |
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165 : iValue( ( aUpdateRate & 0xFFFF ) | ( aTearingFree ? 0x80000000 : 0x0 ) ) |
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166 { |
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167 } |
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168 TSurfaceUpdate::TSurfaceUpdate(TInt aValue) |
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169 : iValue( static_cast<TUint>( aValue ) ) |
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170 { |
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171 } |
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172 |
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173 TSurfaceUpdate::operator TInt() const |
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174 { |
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175 return static_cast<TInt>( iValue ); |
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176 } |
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177 |
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178 TUint TSurfaceUpdate::UpdateRate() const |
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179 { |
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180 return ( iValue & 0xFFFF ); |
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181 } |
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182 |
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183 TBool TSurfaceUpdate::TearingFree() const |
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184 { |
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185 return ( iValue & 0x80000000 ) ? ETrue : EFalse; |
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186 } |
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187 |
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188 }; //namespace surfaceHints |
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189 |
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190 #endif //__SURFACE_HINTS_H__ |
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191 |
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192 // End of File |
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193 |