1 /* Copyright (C) 2007 Jean-Marc Valin 2 3 File: os_support.h 4 This is the (tiny) OS abstraction layer. Aside from math.h, this is the 5 only place where system headers are allowed. 6 7 Redistribution and use in source and binary forms, with or without 8 modification, are permitted provided that the following conditions are 9 met: 10 11 1. Redistributions of source code must retain the above copyright notice, 12 this list of conditions and the following disclaimer. 13 14 2. Redistributions in binary form must reproduce the above copyright 15 notice, this list of conditions and the following disclaimer in the 16 documentation and/or other materials provided with the distribution. 17 18 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 22 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 27 ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef OS_SUPPORT_H 32 #define OS_SUPPORT_H 33 34 #ifdef CUSTOM_SUPPORT 35 # include "custom_support.h" 36 #endif 37 38 #include <string.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 42 /** Opus wrapper for malloc(). To do your own dynamic allocation, all you need to do is replace this function and opus_free */ 43 #ifndef OVERRIDE_OPUS_ALLOC 44 static inline void *opus_alloc (size_t size) 45 { 46 return malloc(size); 47 } 48 #endif 49 50 /** Same as celt_alloc(), except that the area is only needed inside a CELT call (might cause problem with wideband though) */ 51 #ifndef OVERRIDE_OPUS_ALLOC_SCRATCH 52 static inline void *opus_alloc_scratch (size_t size) 53 { 54 /* Scratch space doesn't need to be cleared */ 55 return opus_alloc(size); 56 } 57 #endif 58 59 /** Opus wrapper for free(). To do your own dynamic allocation, all you need to do is replace this function and opus_alloc */ 60 #ifndef OVERRIDE_OPUS_FREE 61 static inline void opus_free (void *ptr) 62 { 63 free(ptr); 64 } 65 #endif 66 67 /** Copy n bytes of memory from src to dst. The 0* term provides compile-time type checking */ 68 #ifndef OVERRIDE_OPUS_COPY 69 #define OPUS_COPY(dst, src, n) (memcpy((dst), (src), (n)*sizeof(*(dst)) + 0*((dst)-(src)) )) 70 #endif 71 72 /** Copy n bytes of memory from src to dst, allowing overlapping regions. The 0* term 73 provides compile-time type checking */ 74 #ifndef OVERRIDE_OPUS_MOVE 75 #define OPUS_MOVE(dst, src, n) (memmove((dst), (src), (n)*sizeof(*(dst)) + 0*((dst)-(src)) )) 76 #endif 77 78 /** Set n elements of dst to zero, starting at address s */ 79 #ifndef OVERRIDE_OPUS_CLEAR 80 #define OPUS_CLEAR(dst, n) (memset((dst), 0, (n)*sizeof(*(dst)))) 81 #endif 82 83 /*#ifdef __GNUC__ 84 #pragma GCC poison printf sprintf 85 #pragma GCC poison malloc free realloc calloc 86 #endif*/ 87 88 #endif /* OS_SUPPORT_H */ 89 90
