b1363d37fc
Adds a globally-unique ID (PID + sequence number) to every GraphicBuffer, which will remain the same while crossing Binder, even if the underlying handles change. Change-Id: Ib11330a4c5e99621b82204e0adb31b9a88658426
157 lines
5.0 KiB
C++
157 lines
5.0 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_GRAPHIC_BUFFER_H
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#define ANDROID_GRAPHIC_BUFFER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <ui/ANativeObjectBase.h>
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#include <ui/PixelFormat.h>
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#include <ui/Rect.h>
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#include <utils/Flattenable.h>
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#include <utils/RefBase.h>
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struct ANativeWindowBuffer;
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namespace android {
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class GraphicBufferMapper;
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// ===========================================================================
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// GraphicBuffer
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// ===========================================================================
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class GraphicBuffer
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: public ANativeObjectBase< ANativeWindowBuffer, GraphicBuffer, RefBase >,
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public Flattenable<GraphicBuffer>
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{
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friend class Flattenable<GraphicBuffer>;
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public:
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enum {
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USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER,
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USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY,
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USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN,
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USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK,
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USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER,
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USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY,
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USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN,
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USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK,
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USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,
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USAGE_PROTECTED = GRALLOC_USAGE_PROTECTED,
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USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE,
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USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER,
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USAGE_HW_2D = GRALLOC_USAGE_HW_2D,
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USAGE_HW_COMPOSER = GRALLOC_USAGE_HW_COMPOSER,
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USAGE_HW_VIDEO_ENCODER = GRALLOC_USAGE_HW_VIDEO_ENCODER,
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USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK
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};
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GraphicBuffer();
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// creates w * h buffer
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GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage);
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// create a buffer from an existing handle
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GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage,
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uint32_t stride, native_handle_t* handle, bool keepOwnership);
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// create a buffer from an existing ANativeWindowBuffer
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GraphicBuffer(ANativeWindowBuffer* buffer, bool keepOwnership);
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// return status
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status_t initCheck() const;
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uint32_t getWidth() const { return width; }
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uint32_t getHeight() const { return height; }
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uint32_t getStride() const { return stride; }
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uint32_t getUsage() const { return usage; }
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PixelFormat getPixelFormat() const { return format; }
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Rect getBounds() const { return Rect(width, height); }
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uint64_t getId() const { return mId; }
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status_t reallocate(uint32_t w, uint32_t h, PixelFormat f, uint32_t usage);
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status_t lock(uint32_t usage, void** vaddr);
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status_t lock(uint32_t usage, const Rect& rect, void** vaddr);
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// For HAL_PIXEL_FORMAT_YCbCr_420_888
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status_t lockYCbCr(uint32_t usage, android_ycbcr *ycbcr);
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status_t lockYCbCr(uint32_t usage, const Rect& rect, android_ycbcr *ycbcr);
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status_t unlock();
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ANativeWindowBuffer* getNativeBuffer() const;
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// for debugging
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static void dumpAllocationsToSystemLog();
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// Flattenable protocol
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size_t getFlattenedSize() const;
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size_t getFdCount() const;
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status_t flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const;
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status_t unflatten(void const*& buffer, size_t& size, int const*& fds, size_t& count);
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private:
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~GraphicBuffer();
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enum {
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ownNone = 0,
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ownHandle = 1,
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ownData = 2,
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};
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inline const GraphicBufferMapper& getBufferMapper() const {
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return mBufferMapper;
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}
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inline GraphicBufferMapper& getBufferMapper() {
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return mBufferMapper;
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}
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uint8_t mOwner;
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private:
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friend class Surface;
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friend class BpSurface;
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friend class BnSurface;
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friend class LightRefBase<GraphicBuffer>;
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GraphicBuffer(const GraphicBuffer& rhs);
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GraphicBuffer& operator = (const GraphicBuffer& rhs);
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const GraphicBuffer& operator = (const GraphicBuffer& rhs) const;
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status_t initSize(uint32_t w, uint32_t h, PixelFormat format,
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uint32_t usage);
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void free_handle();
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GraphicBufferMapper& mBufferMapper;
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ssize_t mInitCheck;
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// If we're wrapping another buffer then this reference will make sure it
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// doesn't get freed.
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sp<ANativeWindowBuffer> mWrappedBuffer;
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uint64_t mId;
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};
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}; // namespace android
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#endif // ANDROID_GRAPHIC_BUFFER_H
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