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
opus_alloc(size_t size)46 static OPUS_INLINE void *opus_alloc (size_t size)
47 {
48 return malloc(size);
49 }
50 #endif
51
52 #ifndef OVERRIDE_OPUS_REALLOC
opus_realloc(void * ptr,size_t size)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
opus_alloc_scratch(size_t size)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
opus_free(void * ptr)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 */
99
100