2 * Copyright (C) 2007 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef ANDROID_GRAPHIC_BUFFER_H
18 #define ANDROID_GRAPHIC_BUFFER_H
21 #include <sys/types.h>
25 #include <ui/ANativeObjectBase.h>
26 #include <ui/PixelFormat.h>
28 #include <utils/Flattenable.h>
29 #include <utils/RefBase.h>
31 #include <nativebase/nativebase.h>
33 #include <hardware/gralloc.h>
37 class GraphicBufferMapper;
39 // ===========================================================================
41 // ===========================================================================
44 : public ANativeObjectBase<ANativeWindowBuffer, GraphicBuffer, RefBase>,
45 public Flattenable<GraphicBuffer>
47 friend class Flattenable<GraphicBuffer>;
51 USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER,
52 USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY,
53 USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN,
54 USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK,
56 USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER,
57 USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY,
58 USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN,
59 USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK,
61 USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,
63 USAGE_PROTECTED = GRALLOC_USAGE_PROTECTED,
65 USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE,
66 USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER,
67 USAGE_HW_2D = GRALLOC_USAGE_HW_2D,
68 USAGE_HW_COMPOSER = GRALLOC_USAGE_HW_COMPOSER,
69 USAGE_HW_VIDEO_ENCODER = GRALLOC_USAGE_HW_VIDEO_ENCODER,
70 USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK,
72 USAGE_CURSOR = GRALLOC_USAGE_CURSOR,
75 static sp<GraphicBuffer> from(ANativeWindowBuffer *);
78 // Create a GraphicBuffer to be unflatten'ed into or be reallocated.
81 // Create a GraphicBuffer by allocating and managing a buffer internally.
82 // This function is privileged. See reallocate for details.
83 GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
84 uint32_t inLayerCount, uint64_t inUsage,
85 std::string requestorName = "<Unknown>");
87 // Create a GraphicBuffer from an existing handle.
88 enum HandleWrapMethod : uint8_t {
89 // Wrap and use the handle directly. It assumes the handle has been
90 // registered and never fails. The handle must have a longer lifetime
91 // than this wrapping GraphicBuffer.
93 // This can be used when, for example, you want to wrap a handle that
94 // is already managed by another GraphicBuffer.
97 // Take ownership of the handle and use it directly. It assumes the
98 // handle has been registered and never fails.
100 // This can be used to manage an already registered handle with
104 // Take onwership of an unregistered handle and use it directly. It
105 // can fail when the buffer does not register. There is no ownership
106 // transfer on failures.
108 // This can be used to, for example, create a GraphicBuffer from a
109 // handle returned by Parcel::readNativeHandle.
110 TAKE_UNREGISTERED_HANDLE,
112 // Make a clone of the handle and use the cloned handle. It can fail
113 // when cloning fails or when the buffer does not register. There is
114 // never ownership transfer.
116 // This can be used to create a GraphicBuffer from a handle that
117 // cannot be used directly, such as one from hidl_handle.
120 GraphicBuffer(const native_handle_t* handle, HandleWrapMethod method,
121 uint32_t width, uint32_t height,
122 PixelFormat format, uint32_t layerCount,
123 uint64_t usage, uint32_t stride);
125 // These functions are deprecated because they only take 32 bits of usage
126 GraphicBuffer(const native_handle_t* handle, HandleWrapMethod method,
127 uint32_t width, uint32_t height,
128 PixelFormat format, uint32_t layerCount,
129 uint32_t usage, uint32_t stride)
130 : GraphicBuffer(handle, method, width, height, format, layerCount,
131 static_cast<uint64_t>(usage), stride) {}
132 GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
133 uint32_t inLayerCount, uint32_t inUsage, uint32_t inStride,
134 native_handle_t* inHandle, bool keepOwnership);
135 GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
136 uint32_t inUsage, std::string requestorName = "<Unknown>");
139 status_t initCheck() const;
141 uint32_t getWidth() const { return static_cast<uint32_t>(width); }
142 uint32_t getHeight() const { return static_cast<uint32_t>(height); }
143 uint32_t getStride() const { return static_cast<uint32_t>(stride); }
144 uint32_t getUsage() const { return static_cast<uint32_t>(usage); }
145 PixelFormat getPixelFormat() const { return format; }
146 uint32_t getLayerCount() const { return static_cast<uint32_t>(layerCount); }
147 Rect getBounds() const { return Rect(width, height); }
148 uint64_t getId() const { return mId; }
150 uint32_t getGenerationNumber() const { return mGenerationNumber; }
151 void setGenerationNumber(uint32_t generation) {
152 mGenerationNumber = generation;
155 // This function is privileged. It requires access to the allocator
156 // device or service, which usually involves adding suitable selinux
158 status_t reallocate(uint32_t inWidth, uint32_t inHeight,
159 PixelFormat inFormat, uint32_t inLayerCount, uint64_t inUsage);
161 bool needsReallocation(uint32_t inWidth, uint32_t inHeight,
162 PixelFormat inFormat, uint32_t inLayerCount, uint64_t inUsage);
164 status_t lock(uint32_t inUsage, void** vaddr);
165 status_t lock(uint32_t inUsage, const Rect& rect, void** vaddr);
166 // For HAL_PIXEL_FORMAT_YCbCr_420_888
167 status_t lockYCbCr(uint32_t inUsage, android_ycbcr *ycbcr);
168 status_t lockYCbCr(uint32_t inUsage, const Rect& rect,
169 android_ycbcr *ycbcr);
171 status_t lockAsync(uint32_t inUsage, void** vaddr, int fenceFd);
172 status_t lockAsync(uint32_t inUsage, const Rect& rect, void** vaddr,
174 status_t lockAsync(uint64_t inProducerUsage, uint64_t inConsumerUsage,
175 const Rect& rect, void** vaddr, int fenceFd);
176 status_t lockAsyncYCbCr(uint32_t inUsage, android_ycbcr *ycbcr,
178 status_t lockAsyncYCbCr(uint32_t inUsage, const Rect& rect,
179 android_ycbcr *ycbcr, int fenceFd);
180 status_t unlockAsync(int *fenceFd);
182 ANativeWindowBuffer* getNativeBuffer() const;
185 static void dumpAllocationsToSystemLog();
187 // Flattenable protocol
188 size_t getFlattenedSize() const;
189 size_t getFdCount() const;
190 status_t flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const;
191 status_t unflatten(void const*& buffer, size_t& size, int const*& fds, size_t& count);
202 inline const GraphicBufferMapper& getBufferMapper() const {
203 return mBufferMapper;
205 inline GraphicBufferMapper& getBufferMapper() {
206 return mBufferMapper;
211 friend class Surface;
212 friend class BpSurface;
213 friend class BnSurface;
214 friend class LightRefBase<GraphicBuffer>;
215 GraphicBuffer(const GraphicBuffer& rhs);
216 GraphicBuffer& operator = (const GraphicBuffer& rhs);
217 const GraphicBuffer& operator = (const GraphicBuffer& rhs) const;
219 status_t initWithSize(uint32_t inWidth, uint32_t inHeight,
220 PixelFormat inFormat, uint32_t inLayerCount,
221 uint64_t inUsage, std::string requestorName);
223 status_t initWithHandle(const native_handle_t* handle,
224 HandleWrapMethod method, uint32_t width, uint32_t height,
225 PixelFormat format, uint32_t layerCount,
226 uint64_t usage, uint32_t stride);
230 GraphicBufferMapper& mBufferMapper;
235 // Stores the generation number of this buffer. If this number does not
236 // match the BufferQueue's internal generation number (set through
237 // IGBP::setGenerationNumber), attempts to attach the buffer will fail.
238 uint32_t mGenerationNumber;
241 }; // namespace android
243 #endif // ANDROID_GRAPHIC_BUFFER_H