1 /* 2 * Copyright (c) 2011-2014, 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 GRALLOC_MEMALLOC_H 31 #define GRALLOC_MEMALLOC_H 32 33 #include <stdlib.h> 34 35 namespace gralloc { 36 37 enum { 38 CACHE_CLEAN = 0x1, 39 CACHE_INVALIDATE, 40 CACHE_CLEAN_AND_INVALIDATE, 41 }; 42 43 struct alloc_data { 44 void *base; 45 int fd; 46 unsigned int offset; 47 unsigned int size; 48 unsigned int align; 49 uintptr_t pHandle; 50 bool uncached; 51 unsigned int flags; 52 int allocType; 53 }; 54 55 class IMemAlloc { 56 57 public: 58 // Allocate buffer - fill in the alloc_data 59 // structure and pass it in. Mapped address 60 // and fd are returned in the alloc_data struct 61 virtual int alloc_buffer(alloc_data& data) = 0; 62 63 // Free buffer 64 virtual int free_buffer(void *base, unsigned int size, 65 unsigned int offset, int fd) = 0; 66 67 // Map buffer 68 virtual int map_buffer(void **pBase, unsigned int size, 69 unsigned int offset, int fd) = 0; 70 71 // Unmap buffer 72 virtual int unmap_buffer(void *base, unsigned int size, 73 unsigned int offset) = 0; 74 75 // Clean and invalidate 76 virtual int clean_buffer(void *base, unsigned int size, 77 unsigned int offset, int fd, int op) = 0; 78 79 // Destructor ~IMemAlloc()80 virtual ~IMemAlloc() {}; 81 82 enum { 83 FD_INIT = -1, 84 }; 85 86 }; 87 88 } // end gralloc namespace 89 #endif // GRALLOC_MEMALLOC_H 90