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NekoX/TMessagesProj/jni/ffmpeg_mathops_fix.h
2021-06-26 03:24:41 +08:00

32 lines
686 B
C

#ifndef FFMPEG_MATHOPS_FIX_H
#define FFMPEG_MATHOPS_FIX_H
#ifndef NEG_USR32
# define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
#endif
#ifndef NEG_SSR32
# define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
#endif
#ifndef sign_extend
static inline av_const int sign_extend(int val, unsigned bits)
{
unsigned shift = 8 * sizeof(int) - bits;
union { unsigned u; int s; } v = { (unsigned) val << shift };
return v.s >> shift;
}
#endif
#ifndef zero_extend
static inline av_const unsigned zero_extend(unsigned val, unsigned bits)
{
return (val << ((8 * sizeof(int)) - bits)) >> ((8 * sizeof(int)) - bits);
}
#endif
#ifndef SUINT
#define SUINT unsigned
#endif
#endif