| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "SkDeviceProfile.h" |
| #include "SkMutex.h" |
| |
| #define DEFAULT_GAMMAEXP 2.2f |
| #define DEFAULT_CONTRASTSCALE 0.5f |
| #define DEFAULT_LCDCONFIG SkDeviceProfile::kNone_LCDConfig |
| #define DEFAULT_FONTHINTLEVEL SkDeviceProfile::kSlight_FontHintLevel |
| |
| static float pin(float value, float min, float max) { |
| if (value < min) { |
| value = min; |
| } else if (value > max) { |
| value = max; |
| } |
| return value; |
| } |
| |
| SkDeviceProfile::SkDeviceProfile(float gammaExp, float contrast, |
| LCDConfig config, FontHintLevel level) { |
| fGammaExponent = pin(gammaExp, 0, 10); |
| fContrastScale = pin(contrast, 0, 1); |
| fLCDConfig = config; |
| fFontHintLevel = level; |
| } |
| |
| void SkDeviceProfile::generateTableForLuminanceByte(U8CPU lumByte, |
| uint8_t table[256]) const { |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkDeviceProfile* SkDeviceProfile::Create(float gammaExp, |
| float contrast, |
| LCDConfig config, |
| FontHintLevel level) { |
| return new SkDeviceProfile(gammaExp, contrast, config, level); |
| } |
| |
| SK_DECLARE_STATIC_MUTEX(gMutex); |
| static SkDeviceProfile* gDefaultProfile; |
| static SkDeviceProfile* gGlobalProfile; |
| |
| SkDeviceProfile* SkDeviceProfile::GetDefault() { |
| SkAutoMutexAcquire amc(gMutex); |
| |
| if (nullptr == gDefaultProfile) { |
| gDefaultProfile = SkDeviceProfile::Create(DEFAULT_GAMMAEXP, |
| DEFAULT_CONTRASTSCALE, |
| DEFAULT_LCDCONFIG, |
| DEFAULT_FONTHINTLEVEL); |
| } |
| return gDefaultProfile; |
| } |
| |
| SkDeviceProfile* SkDeviceProfile::RefGlobal() { |
| SkAutoMutexAcquire amc(gMutex); |
| |
| if (nullptr == gGlobalProfile) { |
| gGlobalProfile = SkDeviceProfile::GetDefault(); |
| } |
| gGlobalProfile->ref(); |
| return gGlobalProfile; |
| } |
| |
| void SkDeviceProfile::SetGlobal(SkDeviceProfile* profile) { |
| SkAutoMutexAcquire amc(gMutex); |
| |
| SkRefCnt_SafeAssign(gGlobalProfile, profile); |
| } |