1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_TEXTURE_MANAGER_H 18 #define ANDROID_TEXTURE_MANAGER_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <EGL/egl.h> 24 #include <EGL/eglext.h> 25 #include <GLES/gl.h> 26 27 #include <ui/Region.h> 28 29 #include <pixelflinger/pixelflinger.h> 30 31 namespace android { 32 33 // --------------------------------------------------------------------------- 34 35 class GLExtensions; 36 class GraphicBuffer; 37 38 // --------------------------------------------------------------------------- 39 40 struct Image { 41 enum { TEXTURE_2D=0, TEXTURE_EXTERNAL=1 }; ImageImage42 Image() : name(-1U), image(EGL_NO_IMAGE_KHR), width(0), height(0), 43 dirty(1), target(TEXTURE_2D) { } 44 GLuint name; 45 EGLImageKHR image; 46 GLuint width; 47 GLuint height; 48 unsigned dirty : 1; 49 unsigned target : 1; 50 }; 51 52 struct Texture : public Image { TextureTexture53 Texture() : Image(), NPOTAdjust(0) { } 54 GLuint potWidth; 55 GLuint potHeight; 56 GLfloat wScale; 57 GLfloat hScale; 58 unsigned NPOTAdjust : 1; 59 }; 60 61 // --------------------------------------------------------------------------- 62 63 class TextureManager { 64 const GLExtensions& mGLExtensions; 65 static status_t initTexture(Image* texture, int32_t format); 66 static status_t initTexture(Texture* texture); 67 static bool isSupportedYuvFormat(int format); 68 static bool isYuvFormat(int format); 69 static GLenum getTextureTarget(const Image* pImage); 70 public: 71 72 TextureManager(); 73 74 // load bitmap data into the active buffer 75 status_t loadTexture(Texture* texture, 76 const Region& dirty, const GGLSurface& t); 77 78 // make active buffer an EGLImage if needed 79 status_t initEglImage(Image* texture, 80 EGLDisplay dpy, const sp<GraphicBuffer>& buffer); 81 82 // activate a texture 83 static void activateTexture(const Texture& texture, bool filter); 84 85 // deactivate a texture 86 static void deactivateTextures(); 87 }; 88 89 // --------------------------------------------------------------------------- 90 91 }; // namespace android 92 93 #endif // ANDROID_TEXTURE_MANAGER_H 94