1/* 2** 3** Copyright 2009, 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_BUFFER_ALLOCATOR_H 19#define ANDROID_BUFFER_ALLOCATOR_H 20 21#include <stdint.h> 22 23#include <cutils/native_handle.h> 24 25#include <utils/Errors.h> 26#include <utils/KeyedVector.h> 27#include <utils/threads.h> 28#include <utils/Singleton.h> 29 30#include <ui/PixelFormat.h> 31 32#include <hardware/gralloc.h> 33 34 35namespace android { 36// --------------------------------------------------------------------------- 37 38class String8; 39 40class GraphicBufferAllocator : public Singleton<GraphicBufferAllocator> 41{ 42public: 43 enum { 44 USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER, 45 USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY, 46 USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN, 47 USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK, 48 49 USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER, 50 USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY, 51 USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN, 52 USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK, 53 54 USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK, 55 56 USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE, 57 USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER, 58 USAGE_HW_2D = GRALLOC_USAGE_HW_2D, 59 USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK 60 }; 61 62 static inline GraphicBufferAllocator& get() { return getInstance(); } 63 64 65 status_t alloc(uint32_t w, uint32_t h, PixelFormat format, int usage, 66 buffer_handle_t* handle, int32_t* stride); 67 68 status_t free(buffer_handle_t handle); 69 70 void dump(String8& res) const; 71 static void dumpToSystemLog(); 72 73private: 74 struct alloc_rec_t { 75 uint32_t w; 76 uint32_t h; 77 uint32_t s; 78 PixelFormat format; 79 uint32_t usage; 80 size_t size; 81 }; 82 83 static Mutex sLock; 84 static KeyedVector<buffer_handle_t, alloc_rec_t> sAllocList; 85 86 friend class Singleton<GraphicBufferAllocator>; 87 GraphicBufferAllocator(); 88 ~GraphicBufferAllocator(); 89 90 alloc_device_t *mAllocDev; 91}; 92 93// --------------------------------------------------------------------------- 94}; // namespace android 95 96#endif // ANDROID_BUFFER_ALLOCATOR_H 97