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- /*****************************************************************************
- * osdep.h: platform-specific code
- *****************************************************************************
- * Copyright (C) 2007-2018 x264 project
- *
- * Authors: Loren Merritt <lorenm@u.washington.edu>
- * Laurent Aimar <fenrir@via.ecp.fr>
- * Henrik Gramner <henrik@gramner.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- *
- * This program is also available under a commercial proprietary license.
- * For more information, contact us at licensing@x264.com.
- *****************************************************************************/
- #ifndef X264_OSDEP_H
- #define X264_OSDEP_H
- #define _LARGEFILE_SOURCE 1
- #define _FILE_OFFSET_BITS 64
- #include <stdio.h>
- #include <sys/stat.h>
- #include <inttypes.h>
- #include <stdarg.h>
- #include "config.h"
- #ifdef __INTEL_COMPILER
- #include <mathimf.h>
- #else
- #include <math.h>
- #endif
- #if !HAVE_LOG2F
- #define log2f(x) (logf(x)/0.693147180559945f)
- #define log2(x) (log(x)/0.693147180559945)
- #endif
- #ifdef _MSC_VER
- #define inline __inline
- #define strcasecmp _stricmp
- #define strncasecmp _strnicmp
- #define strtok_r strtok_s
- #define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
- #if _MSC_VER < 1900
- int x264_snprintf( char *s, size_t n, const char *fmt, ... );
- int x264_vsnprintf( char *s, size_t n, const char *fmt, va_list arg );
- #define snprintf x264_snprintf
- #define vsnprintf x264_vsnprintf
- #endif
- #else
- #include <strings.h>
- #endif
- #if !defined(va_copy) && defined(__INTEL_COMPILER)
- #define va_copy(dst, src) ((dst) = (src))
- #endif
- #if !defined(isfinite) && (SYS_OPENBSD || SYS_SunOS)
- #define isfinite finite
- #endif
- #if !HAVE_STRTOK_R && !defined(strtok_r)
- #define strtok_r(str,delim,save) strtok(str,delim)
- #endif
- #ifdef _WIN32
- #define utf8_to_utf16( utf8, utf16 )\
- MultiByteToWideChar( CP_UTF8, MB_ERR_INVALID_CHARS, utf8, -1, utf16, sizeof(utf16)/sizeof(wchar_t) )
- FILE *x264_fopen( const char *filename, const char *mode );
- int x264_rename( const char *oldname, const char *newname );
- #define x264_struct_stat struct _stati64
- #define x264_fstat _fstati64
- int x264_stat( const char *path, x264_struct_stat *buf );
- #else
- #define x264_fopen fopen
- #define x264_rename rename
- #define x264_struct_stat struct stat
- #define x264_fstat fstat
- #define x264_stat stat
- #endif
- /* mdate: return the current date in microsecond */
- int64_t x264_mdate( void );
- #if defined(_WIN32) && !HAVE_WINRT
- int x264_vfprintf( FILE *stream, const char *format, va_list arg );
- int x264_is_pipe( const char *path );
- #else
- #define x264_vfprintf vfprintf
- #define x264_is_pipe(x) 0
- #endif
- #define x264_glue3_expand(x,y,z) x##_##y##_##z
- #define x264_glue3(x,y,z) x264_glue3_expand(x,y,z)
- #ifdef _MSC_VER
- #define DECLARE_ALIGNED( var, n ) __declspec(align(n)) var
- #else
- #define DECLARE_ALIGNED( var, n ) var __attribute__((aligned(n)))
- #endif
- #define ALIGNED_4( var ) DECLARE_ALIGNED( var, 4 )
- #define ALIGNED_8( var ) DECLARE_ALIGNED( var, 8 )
- #define ALIGNED_16( var ) DECLARE_ALIGNED( var, 16 )
- // ARM compiliers don't reliably align stack variables
- // - EABI requires only 8 byte stack alignment to be maintained
- // - gcc can't align stack variables to more even if the stack were to be correctly aligned outside the function
- // - armcc can't either, but is nice enough to actually tell you so
- // - Apple gcc only maintains 4 byte alignment
- // - llvm can align the stack, but only in svn and (unrelated) it exposes bugs in all released GNU binutils...
- #define ALIGNED_ARRAY_EMU( mask, type, name, sub1, ... )\
- uint8_t name##_u [sizeof(type sub1 __VA_ARGS__) + mask]; \
- type (*name) __VA_ARGS__ = (void*)((intptr_t)(name##_u+mask) & ~mask)
- #if ARCH_ARM && SYS_MACOSX
- #define ALIGNED_ARRAY_8( ... ) EXPAND( ALIGNED_ARRAY_EMU( 7, __VA_ARGS__ ) )
- #else
- #define ALIGNED_ARRAY_8( type, name, sub1, ... ) ALIGNED_8( type name sub1 __VA_ARGS__ )
- #endif
- #if ARCH_ARM
- #define ALIGNED_ARRAY_16( ... ) EXPAND( ALIGNED_ARRAY_EMU( 15, __VA_ARGS__ ) )
- #else
- #define ALIGNED_ARRAY_16( type, name, sub1, ... ) ALIGNED_16( type name sub1 __VA_ARGS__ )
- #endif
- #define EXPAND(x) x
- #if ARCH_X86 || ARCH_X86_64
- #define NATIVE_ALIGN 64
- #define ALIGNED_32( var ) DECLARE_ALIGNED( var, 32 )
- #define ALIGNED_64( var ) DECLARE_ALIGNED( var, 64 )
- #if STACK_ALIGNMENT >= 32
- #define ALIGNED_ARRAY_32( type, name, sub1, ... ) ALIGNED_32( type name sub1 __VA_ARGS__ )
- #else
- #define ALIGNED_ARRAY_32( ... ) EXPAND( ALIGNED_ARRAY_EMU( 31, __VA_ARGS__ ) )
- #endif
- #if STACK_ALIGNMENT >= 64
- #define ALIGNED_ARRAY_64( type, name, sub1, ... ) ALIGNED_64( type name sub1 __VA_ARGS__ )
- #else
- #define ALIGNED_ARRAY_64( ... ) EXPAND( ALIGNED_ARRAY_EMU( 63, __VA_ARGS__ ) )
- #endif
- #else
- #define NATIVE_ALIGN 16
- #define ALIGNED_32 ALIGNED_16
- #define ALIGNED_64 ALIGNED_16
- #define ALIGNED_ARRAY_32 ALIGNED_ARRAY_16
- #define ALIGNED_ARRAY_64 ALIGNED_ARRAY_16
- #endif
- #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
- #define UNUSED __attribute__((unused))
- #define ALWAYS_INLINE __attribute__((always_inline)) inline
- #define NOINLINE __attribute__((noinline))
- #define MAY_ALIAS __attribute__((may_alias))
- #define x264_constant_p(x) __builtin_constant_p(x)
- #define x264_nonconstant_p(x) (!__builtin_constant_p(x))
- #else
- #ifdef _MSC_VER
- #define ALWAYS_INLINE __forceinline
- #define NOINLINE __declspec(noinline)
- #else
- #define ALWAYS_INLINE inline
- #define NOINLINE
- #endif
- #define UNUSED
- #define MAY_ALIAS
- #define x264_constant_p(x) 0
- #define x264_nonconstant_p(x) 0
- #endif
- /* threads */
- #if HAVE_BEOSTHREAD
- #include <kernel/OS.h>
- #define x264_pthread_t thread_id
- static inline int x264_pthread_create( x264_pthread_t *t, void *a, void *(*f)(void *), void *d )
- {
- *t = spawn_thread( f, "", 10, d );
- if( *t < B_NO_ERROR )
- return -1;
- resume_thread( *t );
- return 0;
- }
- #define x264_pthread_join(t,s) { long tmp; \
- wait_for_thread(t,(s)?(long*)(s):&tmp); }
- #elif HAVE_POSIXTHREAD
- #include <pthread.h>
- #define x264_pthread_t pthread_t
- #define x264_pthread_create pthread_create
- #define x264_pthread_join pthread_join
- #define x264_pthread_mutex_t pthread_mutex_t
- #define x264_pthread_mutex_init pthread_mutex_init
- #define x264_pthread_mutex_destroy pthread_mutex_destroy
- #define x264_pthread_mutex_lock pthread_mutex_lock
- #define x264_pthread_mutex_unlock pthread_mutex_unlock
- #define x264_pthread_cond_t pthread_cond_t
- #define x264_pthread_cond_init pthread_cond_init
- #define x264_pthread_cond_destroy pthread_cond_destroy
- #define x264_pthread_cond_broadcast pthread_cond_broadcast
- #define x264_pthread_cond_wait pthread_cond_wait
- #define x264_pthread_attr_t pthread_attr_t
- #define x264_pthread_attr_init pthread_attr_init
- #define x264_pthread_attr_destroy pthread_attr_destroy
- #define x264_pthread_num_processors_np pthread_num_processors_np
- #define X264_PTHREAD_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
- #elif HAVE_WIN32THREAD
- #include "win32thread.h"
- #else
- #define x264_pthread_t int
- #define x264_pthread_create(t,u,f,d) 0
- #define x264_pthread_join(t,s)
- #endif //HAVE_*THREAD
- #if !HAVE_POSIXTHREAD && !HAVE_WIN32THREAD
- #define x264_pthread_mutex_t int
- #define x264_pthread_mutex_init(m,f) 0
- #define x264_pthread_mutex_destroy(m)
- #define x264_pthread_mutex_lock(m)
- #define x264_pthread_mutex_unlock(m)
- #define x264_pthread_cond_t int
- #define x264_pthread_cond_init(c,f) 0
- #define x264_pthread_cond_destroy(c)
- #define x264_pthread_cond_broadcast(c)
- #define x264_pthread_cond_wait(c,m)
- #define x264_pthread_attr_t int
- #define x264_pthread_attr_init(a) 0
- #define x264_pthread_attr_destroy(a)
- #define X264_PTHREAD_MUTEX_INITIALIZER 0
- #endif
- #if HAVE_WIN32THREAD || PTW32_STATIC_LIB
- int x264_threading_init( void );
- #else
- #define x264_threading_init() 0
- #endif
- static ALWAYS_INLINE int x264_pthread_fetch_and_add( int *val, int add, x264_pthread_mutex_t *mutex )
- {
- #if HAVE_THREAD
- #if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ > 0) && (ARCH_X86 || ARCH_X86_64)
- return __sync_fetch_and_add( val, add );
- #else
- x264_pthread_mutex_lock( mutex );
- int res = *val;
- *val += add;
- x264_pthread_mutex_unlock( mutex );
- return res;
- #endif
- #else
- int res = *val;
- *val += add;
- return res;
- #endif
- }
- #define WORD_SIZE sizeof(void*)
- #define asm __asm__
- #if WORDS_BIGENDIAN
- #define endian_fix(x) (x)
- #define endian_fix64(x) (x)
- #define endian_fix32(x) (x)
- #define endian_fix16(x) (x)
- #else
- #if HAVE_X86_INLINE_ASM && HAVE_MMX
- static ALWAYS_INLINE uint32_t endian_fix32( uint32_t x )
- {
- asm("bswap %0":"+r"(x));
- return x;
- }
- #elif defined(__GNUC__) && HAVE_ARMV6
- static ALWAYS_INLINE uint32_t endian_fix32( uint32_t x )
- {
- asm("rev %0, %0":"+r"(x));
- return x;
- }
- #else
- static ALWAYS_INLINE uint32_t endian_fix32( uint32_t x )
- {
- return (x<<24) + ((x<<8)&0xff0000) + ((x>>8)&0xff00) + (x>>24);
- }
- #endif
- #if HAVE_X86_INLINE_ASM && ARCH_X86_64
- static ALWAYS_INLINE uint64_t endian_fix64( uint64_t x )
- {
- asm("bswap %0":"+r"(x));
- return x;
- }
- #else
- static ALWAYS_INLINE uint64_t endian_fix64( uint64_t x )
- {
- return endian_fix32(x>>32) + ((uint64_t)endian_fix32(x)<<32);
- }
- #endif
- static ALWAYS_INLINE intptr_t endian_fix( intptr_t x )
- {
- return WORD_SIZE == 8 ? endian_fix64(x) : endian_fix32(x);
- }
- static ALWAYS_INLINE uint16_t endian_fix16( uint16_t x )
- {
- return (x<<8)|(x>>8);
- }
- #endif
- /* For values with 4 bits or less. */
- static ALWAYS_INLINE int x264_ctz_4bit( uint32_t x )
- {
- static uint8_t lut[16] = {4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0};
- return lut[x];
- }
- #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 3)
- #define x264_clz(x) __builtin_clz(x)
- #define x264_ctz(x) __builtin_ctz(x)
- #else
- static ALWAYS_INLINE int x264_clz( uint32_t x )
- {
- static uint8_t lut[16] = {4,3,2,2,1,1,1,1,0,0,0,0,0,0,0,0};
- int y, z = (((x >> 16) - 1) >> 27) & 16;
- x >>= z^16;
- z += y = ((x - 0x100) >> 28) & 8;
- x >>= y^8;
- z += y = ((x - 0x10) >> 29) & 4;
- x >>= y^4;
- return z + lut[x];
- }
- static ALWAYS_INLINE int x264_ctz( uint32_t x )
- {
- static uint8_t lut[16] = {4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0};
- int y, z = (((x & 0xffff) - 1) >> 27) & 16;
- x >>= z;
- z += y = (((x & 0xff) - 1) >> 28) & 8;
- x >>= y;
- z += y = (((x & 0xf) - 1) >> 29) & 4;
- x >>= y;
- return z + lut[x&0xf];
- }
- #endif
- #if HAVE_X86_INLINE_ASM && HAVE_MMX
- /* Don't use __builtin_prefetch; even as recent as 4.3.4, GCC seems incapable of
- * using complex address modes properly unless we use inline asm. */
- static ALWAYS_INLINE void x264_prefetch( void *p )
- {
- asm volatile( "prefetcht0 %0"::"m"(*(uint8_t*)p) );
- }
- /* We require that prefetch not fault on invalid reads, so we only enable it on
- * known architectures. */
- #elif defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 1) &&\
- (ARCH_X86 || ARCH_X86_64 || ARCH_ARM || ARCH_PPC)
- #define x264_prefetch(x) __builtin_prefetch(x)
- #else
- #define x264_prefetch(x)
- #endif
- #if HAVE_POSIXTHREAD
- #if SYS_WINDOWS
- #define x264_lower_thread_priority(p)\
- {\
- x264_pthread_t handle = pthread_self();\
- struct sched_param sp;\
- int policy = SCHED_OTHER;\
- pthread_getschedparam( handle, &policy, &sp );\
- sp.sched_priority -= p;\
- pthread_setschedparam( handle, policy, &sp );\
- }
- #elif SYS_HAIKU
- #include <OS.h>
- #define x264_lower_thread_priority(p)\
- { UNUSED status_t nice_ret = set_thread_priority( find_thread( NULL ), B_LOW_PRIORITY ); }
- #else
- #include <unistd.h>
- #define x264_lower_thread_priority(p) { UNUSED int nice_ret = nice(p); }
- #endif /* SYS_WINDOWS */
- #elif HAVE_WIN32THREAD
- #define x264_lower_thread_priority(p) SetThreadPriority( GetCurrentThread(), X264_MAX( -2, -p ) )
- #else
- #define x264_lower_thread_priority(p)
- #endif
- static inline int x264_is_regular_file( FILE *filehandle )
- {
- x264_struct_stat file_stat;
- if( x264_fstat( fileno( filehandle ), &file_stat ) )
- return 1;
- return S_ISREG( file_stat.st_mode );
- }
- static inline int x264_is_regular_file_path( const char *filename )
- {
- x264_struct_stat file_stat;
- if( x264_stat( filename, &file_stat ) )
- return !x264_is_pipe( filename );
- return S_ISREG( file_stat.st_mode );
- }
- #endif /* X264_OSDEP_H */
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