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comparison: gfx/skia/trunk/src/core/SkDeviceProfile.cpp
gfx/skia/trunk/src/core/SkDeviceProfile.cpp
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| -1:000000000000 | 0:618f592b42a9 |
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| 1 /* | |
| 2 * Copyright 2012 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 | |
| 9 #include "SkDeviceProfile.h" | |
| 10 #include "SkThread.h" | |
| 11 | |
| 12 #define DEFAULT_GAMMAEXP 2.2f | |
| 13 #define DEFAULT_CONTRASTSCALE 0.5f | |
| 14 #define DEFAULT_LCDCONFIG SkDeviceProfile::kNone_LCDConfig | |
| 15 #define DEFAULT_FONTHINTLEVEL SkDeviceProfile::kSlight_FontHintLevel | |
| 16 | |
| 17 static float pin(float value, float min, float max) { | |
| 18 if (value < min) { | |
| 19 value = min; | |
| 20 } else if (value > max) { | |
| 21 value = max; | |
| 22 } | |
| 23 return value; | |
| 24 } | |
| 25 | |
| 26 SkDeviceProfile::SkDeviceProfile(float gammaExp, float contrast, | |
| 27 LCDConfig config, FontHintLevel level) { | |
| 28 fGammaExponent = pin(gammaExp, 0, 10); | |
| 29 fContrastScale = pin(contrast, 0, 1); | |
| 30 fLCDConfig = config; | |
| 31 fFontHintLevel = level; | |
| 32 } | |
| 33 | |
| 34 void SkDeviceProfile::generateTableForLuminanceByte(U8CPU lumByte, | |
| 35 uint8_t table[256]) const { | |
| 36 } | |
| 37 | |
| 38 /////////////////////////////////////////////////////////////////////////////// | |
| 39 | |
| 40 SkDeviceProfile* SkDeviceProfile::Create(float gammaExp, | |
| 41 float contrast, | |
| 42 LCDConfig config, | |
| 43 FontHintLevel level) { | |
| 44 return SkNEW_ARGS(SkDeviceProfile, (gammaExp, contrast, config, level)); | |
| 45 } | |
| 46 | |
| 47 SK_DECLARE_STATIC_MUTEX(gMutex); | |
| 48 static SkDeviceProfile* gDefaultProfile; | |
| 49 static SkDeviceProfile* gGlobalProfile; | |
| 50 | |
| 51 SkDeviceProfile* SkDeviceProfile::GetDefault() { | |
| 52 SkAutoMutexAcquire amc(gMutex); | |
| 53 | |
| 54 if (NULL == gDefaultProfile) { | |
| 55 gDefaultProfile = SkDeviceProfile::Create(DEFAULT_GAMMAEXP, | |
| 56 DEFAULT_CONTRASTSCALE, | |
| 57 DEFAULT_LCDCONFIG, | |
| 58 DEFAULT_FONTHINTLEVEL); | |
| 59 } | |
| 60 return gDefaultProfile; | |
| 61 } | |
| 62 | |
| 63 SkDeviceProfile* SkDeviceProfile::RefGlobal() { | |
| 64 SkAutoMutexAcquire amc(gMutex); | |
| 65 | |
| 66 if (NULL == gGlobalProfile) { | |
| 67 gGlobalProfile = SkDeviceProfile::GetDefault(); | |
| 68 } | |
| 69 gGlobalProfile->ref(); | |
| 70 return gGlobalProfile; | |
| 71 } | |
| 72 | |
| 73 void SkDeviceProfile::SetGlobal(SkDeviceProfile* profile) { | |
| 74 SkAutoMutexAcquire amc(gMutex); | |
| 75 | |
| 76 SkRefCnt_SafeAssign(gGlobalProfile, profile); | |
| 77 } |
