*/
/**
- * @file internal.h
- * common internal api header.
+ * @file libavutil/internal.h
+ * common internal API header
*/
#ifndef AVUTIL_INTERNAL_H
# define NDEBUG
#endif
+#include <limits.h>
#include <stdint.h>
#include <stddef.h>
#include <assert.h>
+#include "config.h"
+#include "common.h"
+#include "mem.h"
+#include "timer.h"
#ifndef attribute_align_arg
-#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__>1)
+#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,2)
# define attribute_align_arg __attribute__((force_align_arg_pointer))
#else
# define attribute_align_arg
#endif
#ifndef attribute_used
-#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
+#if AV_GCC_VERSION_AT_LEAST(3,1)
# define attribute_used __attribute__((used))
#else
# define attribute_used
#endif
#endif
+#ifndef av_alias
+#if HAVE_ATTRIBUTE_MAY_ALIAS
+# define av_alias __attribute__((may_alias))
+#else
+# define av_alias
+#endif
+#endif
+
#ifndef INT16_MIN
-#define INT16_MIN (-0x7fff-1)
+#define INT16_MIN (-0x7fff - 1)
#endif
#ifndef INT16_MAX
#endif
#ifndef INT32_MIN
-#define INT32_MIN (-0x7fffffff-1)
+#define INT32_MIN (-0x7fffffff - 1)
#endif
#ifndef INT32_MAX
#endif
#ifndef INT64_MIN
-#define INT64_MIN (-0x7fffffffffffffffLL-1)
+#define INT64_MIN (-0x7fffffffffffffffLL - 1)
#endif
#ifndef INT64_MAX
#endif
#ifndef INT_BIT
-# if INT_MAX != 2147483647
-# define INT_BIT 64
-# else
-# define INT_BIT 32
-# endif
+# define INT_BIT (CHAR_BIT * sizeof(int))
#endif
-#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
-# define PIC
-#endif
-
-#include "config.h"
-#include "intreadwrite.h"
-#include "bswap.h"
-
#ifndef offsetof
-# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
+# define offsetof(T, F) ((unsigned int)((char *)&((T *)0)->F))
#endif
+/* Use to export labels from asm. */
+#define LABEL_MANGLE(a) EXTERN_PREFIX #a
+
// Use rip-relative addressing if compiling PIC code on x86-64.
-#if defined(ARCH_X86_64) && defined(PIC)
+#if ARCH_X86_64 && defined(PIC)
# define LOCAL_MANGLE(a) #a "(%%rip)"
#else
# define LOCAL_MANGLE(a) #a
/* math */
-extern const uint32_t ff_inverse[256];
-
-#if defined(ARCH_X86)
-# define FASTDIV(a,b) \
- ({\
- int ret,dmy;\
- asm volatile(\
- "mull %3"\
- :"=d"(ret),"=a"(dmy)\
- :"1"(a),"g"(ff_inverse[b])\
- );\
- ret;\
- })
-#elif defined(HAVE_ARMV6)
-static inline av_const int FASTDIV(int a, int b)
-{
- int r;
- asm volatile("cmp %2, #0 \n\t"
- "smmul %0, %1, %2 \n\t"
- "rsblt %0, %0, #0 \n\t"
- : "=r"(r) : "r"(a), "r"(ff_inverse[b]));
- return r;
-}
-#elif defined(ARCH_ARMV4L)
-# define FASTDIV(a,b) \
- ({\
- int ret,dmy;\
- asm volatile(\
- "umull %1, %0, %2, %3"\
- :"=&r"(ret),"=&r"(dmy)\
- :"r"(a),"r"(ff_inverse[b])\
- );\
- ret;\
- })
-#elif defined(CONFIG_FASTDIV)
-# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*ff_inverse[b])>>32))
-#else
-# define FASTDIV(a,b) ((a)/(b))
-#endif
-
extern const uint8_t ff_sqrt_tab[256];
-static inline int av_log2_16bit(unsigned int v);
-
static inline av_const unsigned int ff_sqrt(unsigned int a)
{
unsigned int b;
- if(a<255) return (ff_sqrt_tab[a+1]-1)>>4;
- else if(a<(1<<12)) b= ff_sqrt_tab[a>>4 ]>>2;
-#ifndef CONFIG_SMALL
- else if(a<(1<<14)) b= ff_sqrt_tab[a>>6 ]>>1;
- else if(a<(1<<16)) b= ff_sqrt_tab[a>>8 ] ;
+ if (a < 255) return (ff_sqrt_tab[a + 1] - 1) >> 4;
+ else if (a < (1 << 12)) b = ff_sqrt_tab[a >> 4] >> 2;
+#if !CONFIG_SMALL
+ else if (a < (1 << 14)) b = ff_sqrt_tab[a >> 6] >> 1;
+ else if (a < (1 << 16)) b = ff_sqrt_tab[a >> 8] ;
#endif
- else{
- int s= av_log2_16bit(a>>16)>>1;
- unsigned int c= a>>(s+2);
- b= ff_sqrt_tab[c>>(s+8)];
- b= FASTDIV(c,b) + (b<<s);
+ else {
+ int s = av_log2_16bit(a >> 16) >> 1;
+ unsigned int c = a >> (s + 2);
+ b = ff_sqrt_tab[c >> (s + 8)];
+ b = FASTDIV(c,b) + (b << s);
}
- return b - (a<b*b);
+ return b - (a < b * b);
}
-#if defined(ARCH_X86)
+#if ARCH_X86
#define MASK_ABS(mask, level)\
- asm volatile(\
+ __asm__ volatile(\
"cltd \n\t"\
"xorl %1, %0 \n\t"\
"subl %1, %0 \n\t"\
);
#else
#define MASK_ABS(mask, level)\
- mask= level>>31;\
- level= (level^mask)-mask;
-#endif
-
-#ifdef HAVE_CMOV
-#define COPY3_IF_LT(x,y,a,b,c,d)\
-asm volatile (\
- "cmpl %0, %3 \n\t"\
- "cmovl %3, %0 \n\t"\
- "cmovl %4, %1 \n\t"\
- "cmovl %5, %2 \n\t"\
- : "+&r" (x), "+&r" (a), "+r" (c)\
- : "r" (y), "r" (b), "r" (d)\
-);
-#else
-#define COPY3_IF_LT(x,y,a,b,c,d)\
-if((y)<(x)){\
- (x)=(y);\
- (a)=(b);\
- (c)=(d);\
-}
+ mask = level >> 31;\
+ level = (level ^ mask) - mask;
#endif
-/* avoid usage of various functions */
+/* avoid usage of dangerous/inappropriate system functions */
#undef malloc
#define malloc please_use_av_malloc
#undef free
#undef time
#define time time_is_forbidden_due_to_security_issues
#undef rand
-#define rand rand_is_forbidden_due_to_state_trashing_use_av_random
+#define rand rand_is_forbidden_due_to_state_trashing_use_av_lfg_get
#undef srand
-#define srand srand_is_forbidden_due_to_state_trashing_use_av_init_random
+#define srand srand_is_forbidden_due_to_state_trashing_use_av_lfg_init
#undef random
-#define random random_is_forbidden_due_to_state_trashing_use_av_random
+#define random random_is_forbidden_due_to_state_trashing_use_av_lfg_get
#undef sprintf
#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
#undef strcat
#define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
#undef exit
#define exit exit_is_forbidden
-#if !(defined(LIBAVFORMAT_BUILD) || defined(FFMPEG_FRAMEHOOK_H))
+#ifndef LIBAVFORMAT_BUILD
#undef printf
-#define printf please_use_av_log
+#define printf please_use_av_log_instead_of_printf
#undef fprintf
-#define fprintf please_use_av_log
+#define fprintf please_use_av_log_instead_of_fprintf
#undef puts
-#define puts please_use_av_log
+#define puts please_use_av_log_instead_of_puts
#undef perror
#define perror please_use_av_log_instead_of_perror
#endif
-#define CHECKED_ALLOCZ(p, size)\
+#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
{\
- p= av_mallocz(size);\
- if(p==NULL && (size)!=0){\
- av_log(NULL, AV_LOG_ERROR, "Cannot allocate memory.");\
- goto fail;\
+ p = av_malloc(size);\
+ if (p == NULL && (size) != 0) {\
+ av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
+ goto label;\
}\
}
-#ifndef HAVE_LLRINT
+#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)\
+{\
+ p = av_mallocz(size);\
+ if (p == NULL && (size) != 0) {\
+ av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
+ goto label;\
+ }\
+}
+
+#if !HAVE_EXP2
+#undef exp2
+#define exp2(x) exp((x) * 0.693147180559945)
+#endif /* HAVE_EXP2 */
+
+#if !HAVE_EXP2F
+#undef exp2f
+#define exp2f(x) exp2(x)
+#endif /* HAVE_EXP2F */
+
+#if !HAVE_LLRINT
static av_always_inline av_const long long llrint(double x)
{
return rint(x);
}
#endif /* HAVE_LLRINT */
-#ifndef HAVE_LRINT
+#if !HAVE_LOG2
+#undef log2
+#define log2(x) (log(x) * 1.44269504088896340736)
+#endif /* HAVE_LOG2 */
+
+#if !HAVE_LOG2F
+#undef log2f
+#define log2f(x) log2(x)
+#endif /* HAVE_LOG2F */
+
+#if !HAVE_LRINT
static av_always_inline av_const long int lrint(double x)
{
return rint(x);
}
#endif /* HAVE_LRINT */
-#ifndef HAVE_LRINTF
+#if !HAVE_LRINTF
static av_always_inline av_const long int lrintf(float x)
{
return (int)(rint(x));
}
#endif /* HAVE_LRINTF */
-#ifndef HAVE_ROUND
+#if !HAVE_ROUND
static av_always_inline av_const double round(double x)
{
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
}
#endif /* HAVE_ROUND */
-#ifndef HAVE_ROUNDF
+#if !HAVE_ROUNDF
static av_always_inline av_const float roundf(float x)
{
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
}
#endif /* HAVE_ROUNDF */
+#if !HAVE_TRUNCF
+static av_always_inline av_const float truncf(float x)
+{
+ return (x > 0) ? floor(x) : ceil(x);
+}
+#endif /* HAVE_TRUNCF */
+
+/**
+ * Returns NULL if CONFIG_SMALL is true, otherwise the argument
+ * without modification. Used to disable the definition of strings
+ * (for example AVCodec long_names).
+ */
+#if CONFIG_SMALL
+# define NULL_IF_CONFIG_SMALL(x) NULL
+#else
+# define NULL_IF_CONFIG_SMALL(x) x
+#endif
+
#endif /* AVUTIL_INTERNAL_H */
projects / ffmpeg / blobdiff