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 struct android_native_buffer_t; 30 31 namespace android { 32 33 class GraphicBufferMapper; 34 35 // =========================================================================== 36 // GraphicBuffer 37 // =========================================================================== 38 39 class GraphicBuffer 40 : public EGLNativeBase< 41 android_native_buffer_t, 42 GraphicBuffer, 43 LightRefBase<GraphicBuffer> >, public Flattenable 44 { 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_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE, 61 USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER, 62 USAGE_HW_2D = GRALLOC_USAGE_HW_2D, 63 USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK 64 }; 65 66 GraphicBuffer(); 67 68 // creates w * h buffer 69 GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage); 70 71 // create a buffer from an existing handle 72 GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage, 73 uint32_t stride, native_handle_t* handle, bool keepOwnership); 74 75 // return status 76 status_t initCheck() const; 77 78 uint32_t getWidth() const { return width; } 79 uint32_t getHeight() const { return height; } 80 uint32_t getStride() const { return stride; } 81 uint32_t getUsage() const { return usage; } 82 PixelFormat getPixelFormat() const { return format; } 83 Rect getBounds() const { return Rect(width, height); } 84 85 status_t reallocate(uint32_t w, uint32_t h, PixelFormat f, uint32_t usage); 86 87 status_t lock(uint32_t usage, void** vaddr); 88 status_t lock(uint32_t usage, const Rect& rect, void** vaddr); 89 status_t lock(GGLSurface* surface, uint32_t usage); 90 status_t unlock(); 91 92 android_native_buffer_t* getNativeBuffer() const; 93 94 void setIndex(int index); 95 int getIndex() const; 96 void setVerticalStride(uint32_t vstride); 97 uint32_t getVerticalStride() const; 98 99 protected: 100 virtual ~GraphicBuffer(); 101 102 enum { 103 ownNone = 0, 104 ownHandle = 1, 105 ownData = 2, 106 }; 107 108 inline const GraphicBufferMapper& getBufferMapper() const { return mBufferMapper; } 109 inline GraphicBufferMapper& getBufferMapper() { return mBufferMapper; } 110 uint8_t mOwner; 111 112 private: 113 friend class Surface; 114 friend class BpSurface; 115 friend class BnSurface; 116 friend class LightRefBase<GraphicBuffer>; 117 GraphicBuffer(const GraphicBuffer& rhs); 118 GraphicBuffer& operator = (const GraphicBuffer& rhs); 119 const GraphicBuffer& operator = (const GraphicBuffer& rhs) const; 120 121 status_t initSize(uint32_t w, uint32_t h, PixelFormat format, 122 uint32_t usage); 123 124 void free_handle(); 125 126 // Flattenable interface 127 size_t getFlattenedSize() const; 128 size_t getFdCount() const; 129 status_t flatten(void* buffer, size_t size, 130 int fds[], size_t count) const; 131 status_t unflatten(void const* buffer, size_t size, 132 int fds[], size_t count); 133 134 135 GraphicBufferMapper& mBufferMapper; 136 ssize_t mInitCheck; 137 uint32_t mVStride; 138 int mIndex; 139 }; 140 141 }; // namespace android 142 143 #endif // ANDROID_GRAPHIC_BUFFER_H 144