1/* 2* Copyright (c) 2015, The Linux Foundation. All rights reserved. 3* 4* Redistribution and use in source and binary forms, with or without 5* modification, are permitted provided that the following conditions are 6* met: 7* * Redistributions of source code must retain the above copyright 8* notice, this list of conditions and the following disclaimer. 9* * Redistributions in binary form must reproduce the above 10* copyright notice, this list of conditions and the following 11* disclaimer in the documentation and/or other materials provided 12* with the distribution. 13* * Neither the name of The Linux Foundation nor the names of its 14* contributors may be used to endorse or promote products derived 15* from this software without specific prior written permission. 16* 17* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28*/ 29 30 31#ifndef __HWC_BUFFER_ALLOCATOR_H__ 32#define __HWC_BUFFER_ALLOCATOR_H__ 33 34#include <sys/mman.h> 35#include <fcntl.h> 36 37namespace gralloc { 38 39class IAllocController; 40 41} // namespace gralloc 42 43namespace sdm { 44 45class HWCBufferAllocator : public BufferAllocator { 46 public: 47 HWCBufferAllocator(); 48 49 DisplayError AllocateBuffer(BufferInfo *buffer_info); 50 DisplayError FreeBuffer(BufferInfo *buffer_info); 51 uint32_t GetBufferSize(BufferInfo *buffer_info); 52 53 private: 54 struct MetaBufferInfo { 55 int alloc_type; //!< Specifies allocation type set by the buffer allocator. 56 void *base_addr; //!< Specifies the base address of the allocated output buffer. 57 }; 58 59 int SetBufferInfo(LayerBufferFormat format, int *target, int *flags); 60 61 gralloc::IAllocController *alloc_controller_; 62}; 63 64} // namespace sdm 65#endif // __HWC_BUFFER_ALLOCATOR_H__ 66 67