1 2 3 #include "SkDeviceProfile.h" 4 5 #define DEFAULT_GAMMAEXP 2.2 6 #define DEFAULT_CONTRASTSCALE 0.5 7 #define DEFAULT_LCDCONFIG SkDeviceProfile::kNone_LCDConfig 8 #define DEFAULT_FONTHINTLEVEL SkDeviceProfile::kSlight_FontHintLevel 9 10 static float pin(float value, float min, float max) { 11 if (value < min) { 12 value = min; 13 } else if (value > max) { 14 value = max; 15 } 16 return value; 17 } 18 19 SkDeviceProfile::SkDeviceProfile(float gammaExp, float contrast, 20 LCDConfig config, FontHintLevel level) { 21 fGammaExponent = pin(gammaExp, 0, 10); 22 fContrastScale = pin(contrast, 0, 1); 23 fLCDConfig = config; 24 fFontHintLevel = level; 25 } 26 27 void SkDeviceProfile::generateTableForLuminanceByte(U8CPU lumByte, 28 uint8_t table[256]) const { 29 } 30 31 /////////////////////////////////////////////////////////////////////////////// 32 33 SkDeviceProfile* SkDeviceProfile::Create(float gammaExp, 34 float contrast, 35 LCDConfig config, 36 FontHintLevel level) { 37 return SkNEW_ARGS(SkDeviceProfile, (gammaExp, contrast, config, level)); 38 } 39 40 static SkMutex gMutex; 41 static SkDeviceProfile* gDefaultProfile; 42 static SkDeviceProfile* gGlobalProfile; 43 44 SkDeviceProfile* SkDeviceProfile::GetDefault() { 45 SkAutoMutexAcquire amc(gMutex); 46 47 if (NULL == gDefaultProfile) { 48 gDefaultProfile = SkDeviceProfile::Create(DEFAULT_GAMMAEXP, 49 DEFAULT_CONTRASTSCALE, 50 DEFAULT_LCDCONFIG, 51 DEFAULT_FONTHINTLEVEL); 52 } 53 return gDefaultProfile; 54 } 55 56 SkDeviceProfile* SkDeviceProfile::RefGlobal() { 57 SkAutoMutexAcquire amc(gMutex); 58 59 if (NULL == gGlobalProfile) { 60 gGlobalProfile = SkDeviceProfile::GetDefault(); 61 } 62 gGlobalProfile->ref(); 63 return gGlobalProfile; 64 } 65 66 void SkDeviceProfile::SetGlobal(SkDeviceProfile* profile) { 67 SkAutoMutexAcquire amc(gMutex); 68 69 SkRefCnt_SafeAssign(gGlobalProfile, profile); 70 } 71 72 73
