1 /* 2 * Copyright (C) 2007 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_GRAPHIC_BUFFER_H 18 #define ANDROID_GRAPHIC_BUFFER_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <ui/ANativeObjectBase.h> 24 #include <ui/PixelFormat.h> 25 #include <ui/Rect.h> 26 #include <utils/Flattenable.h> 27 #include <utils/RefBase.h> 28 29 30 struct ANativeWindowBuffer; 31 32 namespace android { 33 34 class GraphicBufferMapper; 35 36 // =========================================================================== 37 // GraphicBuffer 38 // =========================================================================== 39 40 class GraphicBuffer 41 : public ANativeObjectBase< ANativeWindowBuffer, GraphicBuffer, RefBase >, 42 public Flattenable<GraphicBuffer> 43 { 44 friend class Flattenable<GraphicBuffer>; 45 public: 46 47 enum { 48 USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER, 49 USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY, 50 USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN, 51 USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK, 52 53 USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER, 54 USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY, 55 USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN, 56 USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK, 57 58 USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK, 59 60 USAGE_PROTECTED = GRALLOC_USAGE_PROTECTED, 61 62 USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE, 63 USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER, 64 USAGE_HW_2D = GRALLOC_USAGE_HW_2D, 65 USAGE_HW_COMPOSER = GRALLOC_USAGE_HW_COMPOSER, 66 USAGE_HW_VIDEO_ENCODER = GRALLOC_USAGE_HW_VIDEO_ENCODER, 67 USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK 68 }; 69 70 GraphicBuffer(); 71 72 // creates w * h buffer 73 GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage); 74 75 // create a buffer from an existing handle 76 GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage, 77 uint32_t stride, native_handle_t* handle, bool keepOwnership); 78 79 // create a buffer from an existing ANativeWindowBuffer 80 GraphicBuffer(ANativeWindowBuffer* buffer, bool keepOwnership); 81 82 // return status 83 status_t initCheck() const; 84 getWidth()85 uint32_t getWidth() const { return width; } getHeight()86 uint32_t getHeight() const { return height; } getStride()87 uint32_t getStride() const { return stride; } getUsage()88 uint32_t getUsage() const { return usage; } getPixelFormat()89 PixelFormat getPixelFormat() const { return format; } getBounds()90 Rect getBounds() const { return Rect(width, height); } 91 92 status_t reallocate(uint32_t w, uint32_t h, PixelFormat f, uint32_t usage); 93 94 status_t lock(uint32_t usage, void** vaddr); 95 status_t lock(uint32_t usage, const Rect& rect, void** vaddr); 96 // For HAL_PIXEL_FORMAT_YCbCr_420_888 97 status_t lockYCbCr(uint32_t usage, android_ycbcr *ycbcr); 98 status_t lockYCbCr(uint32_t usage, const Rect& rect, android_ycbcr *ycbcr); 99 status_t unlock(); 100 101 ANativeWindowBuffer* getNativeBuffer() const; 102 103 // for debugging 104 static void dumpAllocationsToSystemLog(); 105 106 // Flattenable protocol 107 size_t getFlattenedSize() const; 108 size_t getFdCount() const; 109 status_t flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const; 110 status_t unflatten(void const*& buffer, size_t& size, int const*& fds, size_t& count); 111 112 private: 113 ~GraphicBuffer(); 114 115 enum { 116 ownNone = 0, 117 ownHandle = 1, 118 ownData = 2, 119 }; 120 getBufferMapper()121 inline const GraphicBufferMapper& getBufferMapper() const { 122 return mBufferMapper; 123 } getBufferMapper()124 inline GraphicBufferMapper& getBufferMapper() { 125 return mBufferMapper; 126 } 127 uint8_t mOwner; 128 129 private: 130 friend class Surface; 131 friend class BpSurface; 132 friend class BnSurface; 133 friend class LightRefBase<GraphicBuffer>; 134 GraphicBuffer(const GraphicBuffer& rhs); 135 GraphicBuffer& operator = (const GraphicBuffer& rhs); 136 const GraphicBuffer& operator = (const GraphicBuffer& rhs) const; 137 138 status_t initSize(uint32_t w, uint32_t h, PixelFormat format, 139 uint32_t usage); 140 141 void free_handle(); 142 143 GraphicBufferMapper& mBufferMapper; 144 ssize_t mInitCheck; 145 146 // If we're wrapping another buffer then this reference will make sure it 147 // doesn't get freed. 148 sp<ANativeWindowBuffer> mWrappedBuffer; 149 }; 150 151 }; // namespace android 152 153 #endif // ANDROID_GRAPHIC_BUFFER_H 154