os_support.h (3291B)
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 "opus_types.h" 39 #include "opus_defines.h" 40 41 #include <string.h> 42 #include <stdlib.h> 43 44 /** Opus wrapper for malloc(). To do your own dynamic allocation replace this function, opus_realloc, and opus_free */ 45 #ifndef OVERRIDE_OPUS_ALLOC 46 static OPUS_INLINE void *opus_alloc (size_t size) 47 { 48 return malloc(size); 49 } 50 #endif 51 52 #ifndef OVERRIDE_OPUS_REALLOC 53 static OPUS_INLINE void *opus_realloc (void *ptr, size_t size) 54 { 55 return realloc(ptr, size); 56 } 57 #endif 58 59 /** Used only for non-threadsafe pseudostack. 60 If desired, this can always return the same area of memory rather than allocating a new one every time. */ 61 #ifndef OVERRIDE_OPUS_ALLOC_SCRATCH 62 static OPUS_INLINE void *opus_alloc_scratch (size_t size) 63 { 64 /* Scratch space doesn't need to be cleared */ 65 return opus_alloc(size); 66 } 67 #endif 68 69 /** Opus wrapper for free(). To do your own dynamic allocation replace this function, opus_realloc, and opus_free */ 70 #ifndef OVERRIDE_OPUS_FREE 71 static OPUS_INLINE void opus_free (void *ptr) 72 { 73 free(ptr); 74 } 75 #endif 76 77 /** Copy n elements from src to dst. The 0* term provides compile-time type checking */ 78 #ifndef OVERRIDE_OPUS_COPY 79 #define OPUS_COPY(dst, src, n) (memcpy((dst), (src), (n)*sizeof(*(dst)) + 0*((dst)-(src)) )) 80 #endif 81 82 /** Copy n elements from src to dst, allowing overlapping regions. The 0* term 83 provides compile-time type checking */ 84 #ifndef OVERRIDE_OPUS_MOVE 85 #define OPUS_MOVE(dst, src, n) (memmove((dst), (src), (n)*sizeof(*(dst)) + 0*((dst)-(src)) )) 86 #endif 87 88 /** Set n elements of dst to zero */ 89 #ifndef OVERRIDE_OPUS_CLEAR 90 #define OPUS_CLEAR(dst, n) (memset((dst), 0, (n)*sizeof(*(dst)))) 91 #endif 92 93 /*#ifdef __GNUC__ 94 #pragma GCC poison printf sprintf 95 #pragma GCC poison malloc free realloc calloc 96 #endif*/ 97 98 #endif /* OS_SUPPORT_H */