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Diffstat (limited to 'contrib/vorbis/lib/os.h')
| -rw-r--r-- | contrib/vorbis/lib/os.h | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/contrib/vorbis/lib/os.h b/contrib/vorbis/lib/os.h deleted file mode 100644 index 416a401..0000000 --- a/contrib/vorbis/lib/os.h +++ /dev/null @@ -1,190 +0,0 @@ -#ifndef _OS_H -#define _OS_H -/******************************************************************** - * * - * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * - * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * - * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * - * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * - * * - * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2015 * - * by the Xiph.Org Foundation http://www.xiph.org/ * - * * - ******************************************************************** - - function: #ifdef jail to whip a few platforms into the UNIX ideal. - - ********************************************************************/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <math.h> -#include <ogg/os_types.h> - -#include "misc.h" - -#ifndef _V_IFDEFJAIL_H_ -# define _V_IFDEFJAIL_H_ - -# ifdef __GNUC__ -# define STIN static __inline__ -# elif defined(_WIN32) -# define STIN static __inline -# else -# define STIN static -# endif - -#ifdef DJGPP -# define rint(x) (floor((x)+0.5f)) -#endif - -#ifndef M_PI -# define M_PI (3.1415926536f) -#endif - -#if defined(_WIN32) && !defined(__SYMBIAN32__) -# include <malloc.h> -# define rint(x) (floor((x)+0.5f)) -# define NO_FLOAT_MATH_LIB -# define FAST_HYPOT(a, b) sqrt((a)*(a) + (b)*(b)) -#endif - -#if defined(__SYMBIAN32__) && defined(__WINS__) -void *_alloca(size_t size); -# define alloca _alloca -#endif - -#ifndef FAST_HYPOT -# define FAST_HYPOT hypot -#endif - -#endif - -#ifdef HAVE_ALLOCA_H -# include <alloca.h> -#endif - -#ifdef USE_MEMORY_H -# include <memory.h> -#endif - -#ifndef min -# define min(x,y) ((x)>(y)?(y):(x)) -#endif - -#ifndef max -# define max(x,y) ((x)<(y)?(y):(x)) -#endif - - -/* Special i386 GCC implementation */ -#if defined(__i386__) && defined(__GNUC__) && !defined(__BEOS__) -# define VORBIS_FPU_CONTROL -/* both GCC and MSVC are kinda stupid about rounding/casting to int. - Because of encapsulation constraints (GCC can't see inside the asm - block and so we end up doing stupid things like a store/load that - is collectively a noop), we do it this way */ - -/* we must set up the fpu before this works!! */ - -typedef ogg_int16_t vorbis_fpu_control; - -static inline void vorbis_fpu_setround(vorbis_fpu_control *fpu){ - ogg_int16_t ret; - ogg_int16_t temp; - __asm__ __volatile__("fnstcw %0\n\t" - "movw %0,%%dx\n\t" - "andw $62463,%%dx\n\t" - "movw %%dx,%1\n\t" - "fldcw %1\n\t":"=m"(ret):"m"(temp): "dx"); - *fpu=ret; -} - -static inline void vorbis_fpu_restore(vorbis_fpu_control fpu){ - __asm__ __volatile__("fldcw %0":: "m"(fpu)); -} - -/* assumes the FPU is in round mode! */ -static inline int vorbis_ftoi(double f){ /* yes, double! Otherwise, - we get extra fst/fld to - truncate precision */ - int i; - __asm__("fistl %0": "=m"(i) : "t"(f)); - return(i); -} -#endif /* Special i386 GCC implementation */ - - -/* MSVC inline assembly. 32 bit only; inline ASM isn't implemented in the - * 64 bit compiler and doesn't work on arm. */ -#if defined(_MSC_VER) && !defined(_WIN64) && \ - !defined(_WIN32_WCE) && !defined(_M_ARM) -# define VORBIS_FPU_CONTROL - -typedef ogg_int16_t vorbis_fpu_control; - -static __inline int vorbis_ftoi(double f){ - int i; - __asm{ - fld f - fistp i - } - return i; -} - -static __inline void vorbis_fpu_setround(vorbis_fpu_control *fpu){ - (void)fpu; -} - -static __inline void vorbis_fpu_restore(vorbis_fpu_control fpu){ - (void)fpu; -} - -#endif /* Special MSVC 32 bit implementation */ - - -/* Optimized code path for x86_64 builds. Uses SSE2 intrinsics. This can be - done safely because all x86_64 CPUs supports SSE2. */ -#if (defined(_MSC_VER) && defined(_WIN64)) || (defined(__GNUC__) && defined (__x86_64__)) -# define VORBIS_FPU_CONTROL - -typedef ogg_int16_t vorbis_fpu_control; - -#include <emmintrin.h> -static __inline int vorbis_ftoi(double f){ - return _mm_cvtsd_si32(_mm_load_sd(&f)); -} - -static __inline void vorbis_fpu_setround(vorbis_fpu_control *fpu){ - (void)fpu; -} - -static __inline void vorbis_fpu_restore(vorbis_fpu_control fpu){ - (void)fpu; -} - -#endif /* Special MSVC x64 implementation */ - - -/* If no special implementation was found for the current compiler / platform, - use the default implementation here: */ -#ifndef VORBIS_FPU_CONTROL - -typedef int vorbis_fpu_control; - -static int vorbis_ftoi(double f){ - /* Note: MSVC and GCC (at least on some systems) round towards zero, thus, - the floor() call is required to ensure correct roudning of - negative numbers */ - return (int)floor(f+.5); -} - -/* We don't have special code for this compiler/arch, so do it the slow way */ -# define vorbis_fpu_setround(vorbis_fpu_control) {} -# define vorbis_fpu_restore(vorbis_fpu_control) {} - -#endif /* default implementation */ - -#endif /* _OS_H */ |