Explicitly include fastmemcpy.h from libvo/.
[libav.git] / libavutil / internal.h
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1/**
2 * @file internal.h
3 * common internal api header.
4 */
5
6#ifndef INTERNAL_H
7#define INTERNAL_H
8
9#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
10# define PIC
11#endif
12
13# ifndef ENODATA
14# define ENODATA 61
15# endif
16
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17#include "bswap.h"
18
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19#include <stddef.h>
20#ifndef offsetof
21# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
22#endif
23
24#define AVOPTION_CODEC_BOOL(name, help, field) \
25 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_BOOL }
26#define AVOPTION_CODEC_DOUBLE(name, help, field, minv, maxv, defval) \
27 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_DOUBLE, minv, maxv, defval }
28#define AVOPTION_CODEC_FLAG(name, help, field, flag, defval) \
29 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_FLAG, flag, 0, defval }
30#define AVOPTION_CODEC_INT(name, help, field, minv, maxv, defval) \
31 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_INT, minv, maxv, defval }
32#define AVOPTION_CODEC_STRING(name, help, field, str, val) \
33 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_STRING, .defval = val, .defstr = str }
34#define AVOPTION_CODEC_RCOVERRIDE(name, help, field) \
35 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_RCOVERRIDE, .defval = 0, .defstr = NULL }
36#define AVOPTION_SUB(ptr) { .name = NULL, .help = (const char*)ptr }
37#define AVOPTION_END() AVOPTION_SUB(NULL)
38
39#ifdef __MINGW32__
40# ifdef _DEBUG
41# define DEBUG
42# endif
43
44# define snprintf _snprintf
45# define vsnprintf _vsnprintf
46
47# ifdef CONFIG_WINCE
48# define perror(a)
49# endif
50
51/* __MINGW32__ end */
52#elif defined (CONFIG_OS2)
53/* OS/2 EMX */
54
55#include <float.h>
56
57#endif /* !__MINGW32__ && CONFIG_OS2 */
58
59# ifdef USE_FASTMEMCPY
f4bd289a 60# include "libvo/fastmemcpy.h"
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61# endif
62
63// Use rip-relative addressing if compiling PIC code on x86-64.
64# if defined(__MINGW32__) || defined(__CYGWIN__) || \
65 defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__))
66# if defined(ARCH_X86_64) && defined(PIC)
67# define MANGLE(a) "_" #a"(%%rip)"
68# else
69# define MANGLE(a) "_" #a
70# endif
71# else
72# if defined(ARCH_X86_64) && defined(PIC)
73# define MANGLE(a) #a"(%%rip)"
74# elif defined(CONFIG_DARWIN)
75# define MANGLE(a) "_" #a
76# else
77# define MANGLE(a) #a
78# endif
79# endif
80
81/* debug stuff */
82
83# if !defined(DEBUG) && !defined(NDEBUG)
84# define NDEBUG
85# endif
86# include <assert.h>
87
88/* dprintf macros */
89# ifdef DEBUG
90# define dprintf(fmt,...) av_log(NULL, AV_LOG_DEBUG, fmt, __VA_ARGS__)
91# else
92# define dprintf(fmt,...)
93# endif
94
95# ifdef CONFIG_WINCE
96# define abort()
97# endif
98
99# define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
100
101extern const uint32_t inverse[256];
102
103#if defined(ARCH_X86) || defined(ARCH_X86_64)
104# define FASTDIV(a,b) \
105 ({\
106 int ret,dmy;\
107 asm volatile(\
108 "mull %3"\
109 :"=d"(ret),"=a"(dmy)\
110 :"1"(a),"g"(inverse[b])\
111 );\
112 ret;\
113 })
114#elif defined(CONFIG_FASTDIV)
115# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*inverse[b])>>32))
116#else
117# define FASTDIV(a,b) ((a)/(b))
118#endif
119
120/* math */
121extern FF_IMPORT_ATTR const uint8_t ff_sqrt_tab[128];
122
123static inline int ff_sqrt(int a)
124{
125 int ret=0;
126 int s;
127 int ret_sq=0;
128
129 if(a<128) return ff_sqrt_tab[a];
130
131 for(s=15; s>=0; s--){
132 int b= ret_sq + (1<<(s*2)) + (ret<<s)*2;
133 if(b<=a){
134 ret_sq=b;
135 ret+= 1<<s;
136 }
137 }
138 return ret;
139}
140
141#if defined(ARCH_X86) || defined(ARCH_X86_64)
142#define MASK_ABS(mask, level)\
143 asm volatile(\
144 "cdq \n\t"\
145 "xorl %1, %0 \n\t"\
146 "subl %1, %0 \n\t"\
147 : "+a" (level), "=&d" (mask)\
148 );
149#else
150#define MASK_ABS(mask, level)\
151 mask= level>>31;\
152 level= (level^mask)-mask;
153#endif
154
155#if __CPU__ >= 686 && !defined(RUNTIME_CPUDETECT)
156#define COPY3_IF_LT(x,y,a,b,c,d)\
157asm volatile (\
158 "cmpl %0, %3 \n\t"\
159 "cmovl %3, %0 \n\t"\
160 "cmovl %4, %1 \n\t"\
161 "cmovl %5, %2 \n\t"\
162 : "+r" (x), "+r" (a), "+r" (c)\
163 : "r" (y), "r" (b), "r" (d)\
164);
165#else
166#define COPY3_IF_LT(x,y,a,b,c,d)\
167if((y)<(x)){\
168 (x)=(y);\
169 (a)=(b);\
170 (c)=(d);\
171}
172#endif
173
174/* avoid usage of various functions */
175#define malloc please_use_av_malloc
176#define free please_use_av_free
177#define realloc please_use_av_realloc
178#define time time_is_forbidden_due_to_security_issues
179#define rand rand_is_forbidden_due_to_state_trashing
180#define srand srand_is_forbidden_due_to_state_trashing
181#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
182#define strcat strcat_is_forbidden_due_to_security_issues_use_pstrcat
183#if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H))
184#define printf please_use_av_log
185#define fprintf please_use_av_log
186#endif
187
188#define CHECKED_ALLOCZ(p, size)\
189{\
190 p= av_mallocz(size);\
191 if(p==NULL && (size)!=0){\
192 perror("malloc");\
193 goto fail;\
194 }\
195}
196
197#ifndef HAVE_LRINTF
198/* XXX: add ISOC specific test to avoid specific BSD testing. */
199/* better than nothing implementation. */
200/* btw, rintf() is existing on fbsd too -- alex */
201static always_inline long int lrintf(float x)
202{
203#ifdef __MINGW32__
204# ifdef ARCH_X86
205 int32_t i;
206 asm volatile(
207 "fistpl %0\n\t"
208 : "=m" (i) : "t" (x) : "st"
209 );
210 return i;
211# else
212 /* XXX: incorrect, but make it compile */
213 return (int)(x + (x < 0 ? -0.5 : 0.5));
214# endif /* ARCH_X86 */
215#else
216 return (int)(rint(x));
217#endif /* __MINGW32__ */
218}
219#endif /* HAVE_LRINTF */
220
221#endif /* INTERNAL_H */