1 /* 2 * Copyright (c) 2011-2012, Code Aurora Forum. 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 Code Aurora Forum, Inc. 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 struct alloc_data { 38 void *base; 39 int fd; 40 int offset; 41 size_t size; 42 size_t align; 43 unsigned int pHandle; 44 bool uncached; 45 unsigned int flags; 46 int allocType; 47 }; 48 49 class IMemAlloc { 50 51 public: 52 // Allocate buffer - fill in the alloc_data 53 // structure and pass it in. Mapped address 54 // and fd are returned in the alloc_data struct 55 virtual int alloc_buffer(alloc_data& data) = 0; 56 57 // Free buffer 58 virtual int free_buffer(void *base, size_t size, 59 int offset, int fd) = 0; 60 61 // Map buffer 62 virtual int map_buffer(void **pBase, size_t size, 63 int offset, int fd) = 0; 64 65 // Unmap buffer 66 virtual int unmap_buffer(void *base, size_t size, 67 int offset) = 0; 68 69 // Clean and invalidate 70 virtual int clean_buffer(void *base, size_t size, 71 int offset, int fd) = 0; 72 73 // Destructor ~IMemAlloc()74 virtual ~IMemAlloc() {}; 75 76 enum { 77 FD_INIT = -1, 78 }; 79 80 }; 81 82 } // end gralloc namespace 83 #endif // GRALLOC_MEMALLOC_H 84