1 /* 2 * Copyright (C) 2011 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_FILTERFW_CORE_GL_BUFFER_INTERFACE_H 18 #define ANDROID_FILTERFW_CORE_GL_BUFFER_INTERFACE_H 19 20 #include <GLES2/gl2.h> 21 22 namespace android { 23 namespace filterfw { 24 25 class GLTextureHandle { 26 public: 27 virtual ~GLTextureHandle() { } 28 29 // Returns the held texture id. 30 virtual GLuint GetTextureId() const = 0; 31 32 // Binds the held texture. This may result in creating the texture if it 33 // is not yet available. 34 virtual bool FocusTexture() = 0; 35 36 // Generates the mipmap chain of the held texture. Returns true, iff 37 // generating was successful. 38 virtual bool GenerateMipMap() = 0; 39 40 // Set a texture parameter (see glTextureParameter documentation). Returns 41 // true iff the parameter was set successfully. 42 virtual bool SetTextureParameter(GLenum pname, GLint value) = 0; 43 44 // Returns the texture target used. 45 // Texture Target should be: GL_TEXTURE_2D, GL_TEXTURE_EXTERNAL_OES. 46 virtual GLuint GetTextureTarget() const = 0; 47 }; 48 49 class GLFrameBufferHandle { 50 public: 51 virtual ~GLFrameBufferHandle() { } 52 53 // Returns the held FBO id. 54 virtual GLuint GetFboId() const = 0; 55 56 // Binds the held FBO. This may result in creating the FBO if it 57 // is not yet available. 58 virtual bool FocusFrameBuffer() = 0; 59 }; 60 61 // Interface to instances that hold GL textures and frame-buffer-objects. 62 // The GLFrame class implements this interface. 63 class GLBufferHandle : public GLTextureHandle, public GLFrameBufferHandle { 64 public: 65 virtual ~GLBufferHandle() { } 66 }; 67 68 } // namespace filterfw 69 } // namespace android 70 71 #endif // ANDROID_FILTERFW_CORE_GL_BUFFER_INTERFACE_H 72
