1 /* 2 ** 3 ** Copyright 2006, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #ifndef ANDROID_OPENGLES_BUFFER_OBJECT_MANAGER_H 19 #define ANDROID_OPENGLES_BUFFER_OBJECT_MANAGER_H 20 21 #include <stdint.h> 22 #include <stddef.h> 23 #include <sys/types.h> 24 25 #include <utils/Atomic.h> 26 #include <utils/RefBase.h> 27 #include <utils/KeyedVector.h> 28 #include <utils/Errors.h> 29 30 #include <GLES/gl.h> 31 32 #include "Tokenizer.h" 33 #include "TokenManager.h" 34 35 36 namespace android { 37 38 // ---------------------------------------------------------------------------- 39 40 namespace gl { 41 42 struct buffer_t { 43 GLsizeiptr size; 44 GLenum usage; 45 uint8_t* data; 46 uint32_t name; 47 }; 48 49 }; 50 51 class EGLBufferObjectManager : public TokenManager 52 { 53 public: 54 EGLBufferObjectManager(); 55 ~EGLBufferObjectManager(); 56 57 // protocol for sp<> 58 inline void incStrong(const void* id) const; 59 inline void decStrong(const void* id) const; 60 typedef void weakref_type; 61 62 gl::buffer_t const* bind(GLuint buffer); 63 int allocateStore(gl::buffer_t* bo, GLsizeiptr size, GLenum usage); 64 void deleteBuffers(GLsizei n, const GLuint* buffers); 65 66 private: 67 mutable volatile int32_t mCount; 68 mutable Mutex mLock; 69 KeyedVector<GLuint, gl::buffer_t*> mBuffers; 70 }; 71 72 void EGLBufferObjectManager::incStrong(const void* id) const { 73 android_atomic_inc(&mCount); 74 } 75 void EGLBufferObjectManager::decStrong(const void* id) const { 76 if (android_atomic_dec(&mCount) == 1) { 77 delete this; 78 } 79 } 80 81 // ---------------------------------------------------------------------------- 82 }; // namespace android 83 84 #endif // ANDROID_OPENGLES_BUFFER_OBJECT_MANAGER_H 85 86
