1 /* 2 * Copyright (c) 2011-2018, 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 #ifndef __GR_ALLOCATOR_H__ 31 #define __GR_ALLOCATOR_H__ 32 33 #include <vector> 34 35 #include "gr_buf_descriptor.h" 36 #include "gr_ion_alloc.h" 37 #include "gr_utils.h" 38 #include "gralloc_priv.h" 39 40 namespace gralloc { 41 42 class Allocator { 43 public: 44 Allocator(); 45 ~Allocator(); 46 bool Init(); 47 int MapBuffer(void **base, unsigned int size, unsigned int offset, int fd); 48 int ImportBuffer(int fd); 49 int FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd, int handle); 50 int CleanBuffer(void *base, unsigned int size, unsigned int offset, int handle, int op, int fd); 51 int AllocateMem(AllocData *data, uint64_t usage, int format); 52 // @return : index of the descriptor with maximum buffer size req 53 bool CheckForBufferSharing(uint32_t num_descriptors, 54 const std::vector<std::shared_ptr<BufferDescriptor>> &descriptors, 55 ssize_t *max_index); 56 private: 57 void GetIonHeapInfo(uint64_t usage, unsigned int *ion_heap_id, unsigned int *alloc_type, 58 unsigned int *ion_flags); 59 60 IonAlloc *ion_allocator_ = NULL; 61 62 bool use_system_heap_for_sensors_ = true; 63 }; 64 65 } // namespace gralloc 66 67 #endif // __GR_ALLOCATOR_H__ 68