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/android_native_buffer.h> 24 #include <ui/PixelFormat.h> 25 #include <ui/Rect.h> 26 #include <utils/Flattenable.h> 27 #include <pixelflinger/pixelflinger.h> 28 29 #include <hardware/hardware.h> 30 31 struct android_native_buffer_t; 32 33 namespace android { 34 35 class GraphicBufferMapper; 36 37 // =========================================================================== 38 // GraphicBuffer 39 // =========================================================================== 40 41 class GraphicBuffer 42 : public EGLNativeBase< 43 android_native_buffer_t, 44 GraphicBuffer, 45 LightRefBase<GraphicBuffer> >, public Flattenable 46 { 47 public: 48 49 enum { 50 USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER, 51 USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY, 52 USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN, 53 USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK, 54 55 USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER, 56 USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY, 57 USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN, 58 USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK, 59 60 USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK, 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_MASK = GRALLOC_USAGE_HW_MASK 66 }; 67 68 enum { 69 TRANSFORM_IDENTITY = 0, 70 TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90, 71 TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180, 72 TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270 73 }; 74 75 GraphicBuffer(); 76 77 // creates w * h buffer 78 GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage); 79 80 // create a buffer from an existing handle 81 GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage, 82 uint32_t stride, native_handle_t* handle, bool keepOwnership); 83 84 // return status 85 status_t initCheck() const; 86 getWidth()87 uint32_t getWidth() const { return width; } getHeight()88 uint32_t getHeight() const { return height; } getStride()89 uint32_t getStride() const { return stride; } getUsage()90 uint32_t getUsage() const { return usage; } getTransform()91 uint32_t getTransform() const { return transform; } getPixelFormat()92 PixelFormat getPixelFormat() const { return format; } getBounds()93 Rect getBounds() const { return Rect(width, height); } 94 95 status_t reallocate(uint32_t w, uint32_t h, PixelFormat f, uint32_t usage); 96 97 status_t lock(uint32_t usage, void** vaddr); 98 status_t lock(uint32_t usage, const Rect& rect, void** vaddr); 99 status_t lock(GGLSurface* surface, uint32_t usage); 100 status_t unlock(); 101 102 android_native_buffer_t* getNativeBuffer() const; 103 104 void setIndex(int index); 105 int getIndex() const; 106 107 // for debugging 108 static void dumpAllocationsToSystemLog(); 109 110 private: 111 virtual ~GraphicBuffer(); 112 113 enum { 114 ownNone = 0, 115 ownHandle = 1, 116 ownData = 2, 117 }; 118 getBufferMapper()119 inline const GraphicBufferMapper& getBufferMapper() const { 120 return mBufferMapper; 121 } getBufferMapper()122 inline GraphicBufferMapper& getBufferMapper() { 123 return mBufferMapper; 124 } 125 uint8_t mOwner; 126 127 private: 128 friend class Surface; 129 friend class BpSurface; 130 friend class BnSurface; 131 friend class LightRefBase<GraphicBuffer>; 132 GraphicBuffer(const GraphicBuffer& rhs); 133 GraphicBuffer& operator = (const GraphicBuffer& rhs); 134 const GraphicBuffer& operator = (const GraphicBuffer& rhs) const; 135 136 status_t initSize(uint32_t w, uint32_t h, PixelFormat format, 137 uint32_t usage); 138 139 void free_handle(); 140 141 // Flattenable interface 142 size_t getFlattenedSize() const; 143 size_t getFdCount() const; 144 status_t flatten(void* buffer, size_t size, 145 int fds[], size_t count) const; 146 status_t unflatten(void const* buffer, size_t size, 147 int fds[], size_t count); 148 149 150 GraphicBufferMapper& mBufferMapper; 151 ssize_t mInitCheck; 152 int mIndex; 153 }; 154 155 }; // namespace android 156 157 #endif // ANDROID_GRAPHIC_BUFFER_H 158