Implement the avfilter_default_draw_slice() handler and use it in
[libav.git] / libavutil / internal.h
CommitLineData
04d7f601
DB
1/*
2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3 *
b78e7197
DB
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
04d7f601
DB
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
b78e7197 9 * version 2.1 of the License, or (at your option) any later version.
04d7f601 10 *
b78e7197 11 * FFmpeg is distributed in the hope that it will be useful,
04d7f601
DB
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
b78e7197 17 * License along with FFmpeg; if not, write to the Free Software
04d7f601
DB
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
05020c89
RD
21/**
22 * @file internal.h
23 * common internal api header.
24 */
25
98790382
SS
26#ifndef AVUTIL_INTERNAL_H
27#define AVUTIL_INTERNAL_H
05020c89 28
318049b8
MR
29#if !defined(DEBUG) && !defined(NDEBUG)
30# define NDEBUG
31#endif
32
99545457 33#include <stdint.h>
318049b8
MR
34#include <stddef.h>
35#include <assert.h>
52476c1b 36#include "common.h"
99545457 37
5e4c7ca2 38#ifndef attribute_align_arg
af4c0bcb 39#if (!defined(__ICC) || __ICC > 1100) && AV_GCC_VERSION_AT_LEAST(4,2)
5e4c7ca2
RP
40# define attribute_align_arg __attribute__((force_align_arg_pointer))
41#else
42# define attribute_align_arg
43#endif
44#endif
45
5403f857 46#ifndef attribute_used
52476c1b 47#if AV_GCC_VERSION_AT_LEAST(3,1)
5403f857
MR
48# define attribute_used __attribute__((used))
49#else
50# define attribute_used
51#endif
52#endif
53
cd107896
MR
54#ifndef INT16_MIN
55#define INT16_MIN (-0x7fff-1)
56#endif
57
58#ifndef INT16_MAX
59#define INT16_MAX 0x7fff
60#endif
61
62#ifndef INT32_MIN
63#define INT32_MIN (-0x7fffffff-1)
64#endif
65
66#ifndef INT32_MAX
67#define INT32_MAX 0x7fffffff
68#endif
69
70#ifndef UINT32_MAX
71#define UINT32_MAX 0xffffffff
72#endif
73
74#ifndef INT64_MIN
75#define INT64_MIN (-0x7fffffffffffffffLL-1)
76#endif
77
78#ifndef INT64_MAX
8da9266c 79#define INT64_MAX INT64_C(9223372036854775807)
cd107896
MR
80#endif
81
82#ifndef UINT64_MAX
8da9266c 83#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
cd107896
MR
84#endif
85
86#ifndef INT_BIT
87# if INT_MAX != 2147483647
88# define INT_BIT 64
89# else
90# define INT_BIT 32
91# endif
92#endif
93
05020c89
RD
94#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
95# define PIC
96#endif
97
a087028a 98#include "config.h"
aab77159 99
05020c89 100#ifndef offsetof
635eb0cc 101# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
05020c89
RD
102#endif
103
05020c89 104// Use rip-relative addressing if compiling PIC code on x86-64.
b4d96ba2 105#if defined(ARCH_X86_64) && defined(PIC)
df22c35d 106# define LOCAL_MANGLE(a) #a "(%%rip)"
edfd6975 107#else
df22c35d 108# define LOCAL_MANGLE(a) #a
635eb0cc 109#endif
05020c89 110
df22c35d
AS
111#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
112
05020c89
RD
113/* debug stuff */
114
05020c89 115/* dprintf macros */
635eb0cc 116#ifdef DEBUG
318c5e05 117# define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
635eb0cc 118#else
318c5e05 119# define dprintf(pctx, ...)
635eb0cc 120#endif
05020c89 121
635eb0cc 122#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
05020c89 123
7e5f82dc
MR
124/* math */
125
36cd3069 126extern const uint32_t ff_inverse[256];
05020c89 127
3cd52279 128#if defined(ARCH_X86)
05020c89
RD
129# define FASTDIV(a,b) \
130 ({\
131 int ret,dmy;\
be449fca 132 __asm__ volatile(\
05020c89
RD
133 "mull %3"\
134 :"=d"(ret),"=a"(dmy)\
36cd3069 135 :"1"(a),"g"(ff_inverse[b])\
05020c89
RD
136 );\
137 ret;\
138 })
6651ce17
MR
139#elif defined(HAVE_ARMV6)
140static inline av_const int FASTDIV(int a, int b)
141{
b98f10c0
MR
142 int r, t;
143 __asm__ volatile("cmp %3, #2 \n\t"
144 "ldr %1, [%4, %3, lsl #2] \n\t"
145 "lsrle %0, %2, #1 \n\t"
146 "smmulgt %0, %1, %2 \n\t"
147 : "=&r"(r), "=&r"(t) : "r"(a), "r"(b), "r"(ff_inverse));
6651ce17
MR
148 return r;
149}
a2fc0f6a 150#elif defined(ARCH_ARM)
f8c5adaf
MR
151static inline av_const int FASTDIV(int a, int b)
152{
153 int r, t;
154 __asm__ volatile ("umull %1, %0, %2, %3"
155 : "=&r"(r), "=&r"(t) : "r"(a), "r"(ff_inverse[b]));
156 return r;
157}
05020c89 158#elif defined(CONFIG_FASTDIV)
36cd3069 159# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*ff_inverse[b])>>32))
05020c89
RD
160#else
161# define FASTDIV(a,b) ((a)/(b))
162#endif
163
c448a096 164extern const uint8_t ff_sqrt_tab[256];
05020c89 165
c448a096
MN
166static inline int av_log2_16bit(unsigned int v);
167
85074d3c 168static inline av_const unsigned int ff_sqrt(unsigned int a)
05020c89 169{
c448a096
MN
170 unsigned int b;
171
172 if(a<255) return (ff_sqrt_tab[a+1]-1)>>4;
173 else if(a<(1<<12)) b= ff_sqrt_tab[a>>4 ]>>2;
174#ifndef CONFIG_SMALL
175 else if(a<(1<<14)) b= ff_sqrt_tab[a>>6 ]>>1;
176 else if(a<(1<<16)) b= ff_sqrt_tab[a>>8 ] ;
177#endif
178 else{
179 int s= av_log2_16bit(a>>16)>>1;
180 unsigned int c= a>>(s+2);
181 b= ff_sqrt_tab[c>>(s+8)];
182 b= FASTDIV(c,b) + (b<<s);
05020c89 183 }
c448a096
MN
184
185 return b - (a<b*b);
05020c89
RD
186}
187
3cd52279 188#if defined(ARCH_X86)
05020c89 189#define MASK_ABS(mask, level)\
be449fca 190 __asm__ volatile(\
7e14b808 191 "cltd \n\t"\
05020c89
RD
192 "xorl %1, %0 \n\t"\
193 "subl %1, %0 \n\t"\
194 : "+a" (level), "=&d" (mask)\
195 );
196#else
197#define MASK_ABS(mask, level)\
198 mask= level>>31;\
199 level= (level^mask)-mask;
200#endif
201
94e4c3a3 202#ifdef HAVE_CMOV
05020c89 203#define COPY3_IF_LT(x,y,a,b,c,d)\
be449fca 204__asm__ volatile (\
05020c89
RD
205 "cmpl %0, %3 \n\t"\
206 "cmovl %3, %0 \n\t"\
207 "cmovl %4, %1 \n\t"\
208 "cmovl %5, %2 \n\t"\
8c2e2040 209 : "+&r" (x), "+&r" (a), "+r" (c)\
05020c89
RD
210 : "r" (y), "r" (b), "r" (d)\
211);
212#else
213#define COPY3_IF_LT(x,y,a,b,c,d)\
214if((y)<(x)){\
215 (x)=(y);\
216 (a)=(b);\
217 (c)=(d);\
218}
219#endif
220
221/* avoid usage of various functions */
84662c01 222#undef malloc
05020c89 223#define malloc please_use_av_malloc
84662c01 224#undef free
05020c89 225#define free please_use_av_free
84662c01 226#undef realloc
05020c89 227#define realloc please_use_av_realloc
84662c01 228#undef time
05020c89 229#define time time_is_forbidden_due_to_security_issues
84662c01 230#undef rand
3299fb45 231#define rand rand_is_forbidden_due_to_state_trashing_use_av_random
84662c01 232#undef srand
3299fb45 233#define srand srand_is_forbidden_due_to_state_trashing_use_av_init_random
84662c01 234#undef random
3299fb45 235#define random random_is_forbidden_due_to_state_trashing_use_av_random
84662c01 236#undef sprintf
05020c89 237#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
84662c01 238#undef strcat
272605c7 239#define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
84662c01 240#undef exit
c367d067 241#define exit exit_is_forbidden
6123abad 242#ifndef LIBAVFORMAT_BUILD
84662c01 243#undef printf
05020c89 244#define printf please_use_av_log
84662c01 245#undef fprintf
05020c89 246#define fprintf please_use_av_log
59ec6991
DB
247#undef puts
248#define puts please_use_av_log
c5a2fe8f
LA
249#undef perror
250#define perror please_use_av_log_instead_of_perror
05020c89
RD
251#endif
252
253#define CHECKED_ALLOCZ(p, size)\
254{\
255 p= av_mallocz(size);\
256 if(p==NULL && (size)!=0){\
7f0cd6a5 257 av_log(NULL, AV_LOG_ERROR, "Cannot allocate memory.");\
05020c89
RD
258 goto fail;\
259 }\
260}
261
a33cab3a 262#ifndef HAVE_LLRINT
85074d3c 263static av_always_inline av_const long long llrint(double x)
a33cab3a
MK
264{
265 return rint(x);
266}
267#endif /* HAVE_LLRINT */
268
269#ifndef HAVE_LRINT
85074d3c 270static av_always_inline av_const long int lrint(double x)
a33cab3a
MK
271{
272 return rint(x);
273}
274#endif /* HAVE_LRINT */
275
05020c89 276#ifndef HAVE_LRINTF
85074d3c 277static av_always_inline av_const long int lrintf(float x)
05020c89 278{
05020c89 279 return (int)(rint(x));
05020c89
RD
280}
281#endif /* HAVE_LRINTF */
282
a33cab3a 283#ifndef HAVE_ROUND
85074d3c 284static av_always_inline av_const double round(double x)
a33cab3a
MK
285{
286 return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
287}
288#endif /* HAVE_ROUND */
289
290#ifndef HAVE_ROUNDF
85074d3c 291static av_always_inline av_const float roundf(float x)
a33cab3a
MK
292{
293 return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
294}
295#endif /* HAVE_ROUNDF */
296
98790382 297#endif /* AVUTIL_INTERNAL_H */