| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ANDROID_HWUI_GAMMA_FONT_RENDERER_H |
| #define ANDROID_HWUI_GAMMA_FONT_RENDERER_H |
| |
| #include <SkPaint.h> |
| |
| #include "FontRenderer.h" |
| #include "Program.h" |
| |
| namespace android { |
| namespace uirenderer { |
| |
| class GammaFontRenderer { |
| public: |
| virtual ~GammaFontRenderer(); |
| |
| virtual void clear() = 0; |
| virtual void flush() = 0; |
| |
| virtual FontRenderer& getFontRenderer(const SkPaint* paint) = 0; |
| |
| virtual uint32_t getFontRendererCount() const = 0; |
| virtual uint32_t getFontRendererSize(uint32_t fontRenderer, GLenum format) const = 0; |
| |
| virtual void describe(ProgramDescription& description, const SkPaint* paint) const = 0; |
| virtual void setupProgram(ProgramDescription& description, Program* program) const = 0; |
| |
| virtual void endPrecaching() = 0; |
| |
| static GammaFontRenderer* createRenderer(); |
| |
| protected: |
| GammaFontRenderer(); |
| |
| int mBlackThreshold; |
| int mWhiteThreshold; |
| |
| float mGamma; |
| }; |
| |
| class ShaderGammaFontRenderer: public GammaFontRenderer { |
| public: |
| ~ShaderGammaFontRenderer() { |
| delete mRenderer; |
| } |
| |
| void clear() { |
| delete mRenderer; |
| mRenderer = NULL; |
| } |
| |
| void flush() { |
| if (mRenderer) { |
| mRenderer->flushLargeCaches(); |
| } |
| } |
| |
| FontRenderer& getFontRenderer(const SkPaint* /* paint */) { |
| if (!mRenderer) { |
| mRenderer = new FontRenderer; |
| } |
| return *mRenderer; |
| } |
| |
| uint32_t getFontRendererCount() const { |
| return 1; |
| } |
| |
| uint32_t getFontRendererSize(uint32_t /* fontRenderer */, GLenum format) const { |
| return mRenderer ? mRenderer->getCacheSize(format) : 0; |
| } |
| |
| void describe(ProgramDescription& description, const SkPaint* paint) const; |
| void setupProgram(ProgramDescription& description, Program* program) const; |
| |
| void endPrecaching(); |
| |
| private: |
| ShaderGammaFontRenderer(bool multiGamma); |
| |
| FontRenderer* mRenderer; |
| bool mMultiGamma; |
| |
| friend class GammaFontRenderer; |
| }; |
| |
| class LookupGammaFontRenderer: public GammaFontRenderer { |
| public: |
| ~LookupGammaFontRenderer() { |
| delete mRenderer; |
| } |
| |
| void clear() { |
| delete mRenderer; |
| mRenderer = NULL; |
| } |
| |
| void flush() { |
| if (mRenderer) { |
| mRenderer->flushLargeCaches(); |
| } |
| } |
| |
| FontRenderer& getFontRenderer(const SkPaint* /* paint */) { |
| if (!mRenderer) { |
| mRenderer = new FontRenderer; |
| mRenderer->setGammaTable(&mGammaTable[0]); |
| } |
| return *mRenderer; |
| } |
| |
| uint32_t getFontRendererCount() const { |
| return 1; |
| } |
| |
| uint32_t getFontRendererSize(uint32_t /* fontRenderer */, GLenum format) const { |
| return mRenderer ? mRenderer->getCacheSize(format) : 0; |
| } |
| |
| void describe(ProgramDescription& /* description */, const SkPaint* /* paint */) const { |
| } |
| |
| void setupProgram(ProgramDescription& /* description */, Program* /* program */) const { |
| } |
| |
| void endPrecaching(); |
| |
| private: |
| LookupGammaFontRenderer(); |
| |
| FontRenderer* mRenderer; |
| uint8_t mGammaTable[256]; |
| |
| friend class GammaFontRenderer; |
| }; |
| |
| class Lookup3GammaFontRenderer: public GammaFontRenderer { |
| public: |
| ~Lookup3GammaFontRenderer(); |
| |
| void clear(); |
| void flush(); |
| |
| FontRenderer& getFontRenderer(const SkPaint* paint); |
| |
| uint32_t getFontRendererCount() const { |
| return kGammaCount; |
| } |
| |
| uint32_t getFontRendererSize(uint32_t fontRenderer, GLenum format) const { |
| if (fontRenderer >= kGammaCount) return 0; |
| |
| FontRenderer* renderer = mRenderers[fontRenderer]; |
| if (!renderer) return 0; |
| |
| return renderer->getCacheSize(format); |
| } |
| |
| void describe(ProgramDescription& /* description */, const SkPaint* /* paint */) const { |
| } |
| |
| void setupProgram(ProgramDescription& /* description */, Program* /* program */) const { |
| } |
| |
| void endPrecaching(); |
| |
| private: |
| Lookup3GammaFontRenderer(); |
| |
| enum Gamma { |
| kGammaDefault = 0, |
| kGammaBlack = 1, |
| kGammaWhite = 2, |
| kGammaCount = 3 |
| }; |
| |
| FontRenderer* getRenderer(Gamma gamma); |
| |
| uint32_t mRenderersUsageCount[kGammaCount]; |
| FontRenderer* mRenderers[kGammaCount]; |
| |
| uint8_t mGammaTable[256 * kGammaCount]; |
| |
| friend class GammaFontRenderer; |
| }; |
| |
| }; // namespace uirenderer |
| }; // namespace android |
| |
| #endif // ANDROID_HWUI_GAMMA_FONT_RENDERER_H |