/*****************************************************************************
- * osdep.h: h264 encoder
+ * osdep.h: platform-specific code
*****************************************************************************
- * Copyright (C) 2007-2008 x264 project
+ * Copyright (C) 2007-2011 x264 project
*
* Authors: Loren Merritt <lorenm@u.washington.edu>
* Laurent Aimar <fenrir@via.ecp.fr>
* 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 _LARGEFILE_SOURCE 1
#define _FILE_OFFSET_BITS 64
#include <stdio.h>
+#include <sys/stat.h>
+
+#include "config.h"
-#ifdef HAVE_STDINT_H
+#if HAVE_STDINT_H
#include <stdint.h>
#else
#include <inttypes.h>
#endif
+#if !HAVE_LOG2F
+#define log2f(x) (logf(x)/0.693147180559945f)
+#define log2(x) (log(x)/0.693147180559945)
+#endif
+
#ifdef _WIN32
#include <io.h> // _setmode()
#include <fcntl.h> // _O_BINARY
#endif
-#ifdef _MSC_VER
+#ifdef __ICL
#define inline __inline
-#define strcasecmp stricmp
-#define strncasecmp strnicmp
+#define strcasecmp _stricmp
+#define strncasecmp _strnicmp
#define snprintf _snprintf
-#define fseek _fseeki64
-#define ftell _ftelli64
-#define isfinite _finite
#define strtok_r strtok_s
-#define _CRT_SECURE_NO_DEPRECATE
-#define X264_VERSION "" // no configure script for msvc
+#define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
+#endif
+
+#ifdef __INTEL_COMPILER
+#include <mathimf.h>
+#else
+#include <math.h>
+#endif
+
+#if (defined(__GNUC__) || defined(__INTEL_COMPILER)) && (ARCH_X86 || ARCH_X86_64)
+#define HAVE_X86_INLINE_ASM 1
#endif
-#if (defined(SYS_OPENBSD) && !defined(isfinite)) || defined(SYS_SunOS)
+#if !defined(isfinite) && (SYS_OPENBSD || SYS_SunOS)
#define isfinite finite
#endif
#ifdef _WIN32
#endif
#endif
-#ifdef _MSC_VER
+#ifdef __ICL
#define DECLARE_ALIGNED( var, n ) __declspec(align(n)) var
#else
#define DECLARE_ALIGNED( var, n ) var __attribute__((aligned(n)))
#define ALIGNED_8( var ) DECLARE_ALIGNED( var, 8 )
#define ALIGNED_4( var ) DECLARE_ALIGNED( var, 4 )
-// current arm compilers only maintain 8-byte stack alignment
-// and cannot align stack variables to more than 8-bytes
-#ifdef ARCH_ARM
+// 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...
+#if ARCH_ARM && SYS_MACOSX
+#define ALIGNED_ARRAY_8( type, name, sub1, ... )\
+ uint8_t name##_u [sizeof(type sub1 __VA_ARGS__) + 7]; \
+ type (*name) __VA_ARGS__ = (void*)((intptr_t)(name##_u+7) & ~7)
+#else
+#define ALIGNED_ARRAY_8( type, name, sub1, ... )\
+ ALIGNED_8( type name sub1 __VA_ARGS__ )
+#endif
+
+#if ARCH_ARM
#define ALIGNED_ARRAY_16( type, name, sub1, ... )\
- ALIGNED_8( uint8_t name##_8 [sizeof(type sub1 __VA_ARGS__) + 8] );\
- type (*name) __VA_ARGS__ = (void*)(name##_8 + ((intptr_t)name##_8 & 8))
+ uint8_t name##_u [sizeof(type sub1 __VA_ARGS__) + 15];\
+ type (*name) __VA_ARGS__ = (void*)((intptr_t)(name##_u+15) & ~15)
#else
#define ALIGNED_ARRAY_16( type, name, sub1, ... )\
ALIGNED_16( type name sub1 __VA_ARGS__ )
#endif
+#define UNINIT(x) x=x
+
#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 __ICL
+#define ALWAYS_INLINE __forceinline
+#define NOINLINE __declspec(noinline)
#else
-#define UNUSED
#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 defined(SYS_BEOS)
+#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 )
}
#define x264_pthread_join(t,s) { long tmp; \
wait_for_thread(t,(s)?(long*)(*(s)):&tmp); }
-#ifndef usleep
-#define usleep(t) snooze(t)
-#endif
-#define HAVE_PTHREAD 1
-#elif defined(HAVE_PTHREAD)
+#elif HAVE_POSIXTHREAD
#include <pthread.h>
-#define USE_REAL_PTHREAD
-
-#else
-#define x264_pthread_t int
-#define x264_pthread_create(t,u,f,d) 0
-#define x264_pthread_join(t,s)
-#endif //SYS_*
-
-#ifdef USE_REAL_PTHREAD
#define x264_pthread_t pthread_t
#define x264_pthread_create pthread_create
#define x264_pthread_join pthread_join
#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_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
#define WORD_SIZE sizeof(void*)
-#if !defined(_WIN64) && !defined(__LP64__)
-#if defined(_MSC_VER) || defined(__INTEL_COMPILER)
-#define BROKEN_STACK_ALIGNMENT /* define it if stack is not mod16 */
-#endif
-#endif
+#define asm __asm__
-#ifdef WORDS_BIGENDIAN
+#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 defined(__GNUC__) && defined(HAVE_MMX)
+#if HAVE_X86_INLINE_ASM && HAVE_MMX
static ALWAYS_INLINE uint32_t endian_fix32( uint32_t x )
{
asm("bswap %0":"+r"(x));
return x;
}
-static ALWAYS_INLINE intptr_t endian_fix( intptr_t x )
-{
- asm("bswap %0":"+r"(x));
- return x;
-}
-#elif defined(__GNUC__) && defined(HAVE_ARMV6)
-static ALWAYS_INLINE intptr_t endian_fix( intptr_t x )
+#elif defined(__GNUC__) && HAVE_ARMV6
+static ALWAYS_INLINE uint32_t endian_fix32( uint32_t x )
{
asm("rev %0, %0":"+r"(x));
return x;
}
-#define endian_fix32 endian_fix
#else
static ALWAYS_INLINE uint32_t endian_fix32( uint32_t x )
{
return (x<<24) + ((x<<8)&0xff0000) + ((x>>8)&0xff00) + (x>>24);
}
-static ALWAYS_INLINE intptr_t endian_fix( intptr_t x )
+#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 )
{
- if( WORD_SIZE == 8 )
- return endian_fix32(x>>32) + ((uint64_t)endian_fix32(x)<<32);
- else
- return endian_fix32(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);
#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 int ALWAYS_INLINE 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 - 0x10000) >> 27) & 16;
+ int y, z = (((x >> 16) - 1) >> 27) & 16;
x >>= z^16;
z += y = ((x - 0x100) >> 28) & 8;
x >>= y^8;
x >>= y^4;
return z + lut[x];
}
+
+static int ALWAYS_INLINE 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 );\
+}
+#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 uint8_t x264_is_regular_file( FILE *filehandle )
+{
+ struct stat file_stat;
+ if( fstat( fileno( filehandle ), &file_stat ) )
+ return -1;
+ return S_ISREG( file_stat.st_mode );
+}
+
+static inline uint8_t x264_is_regular_file_path( const char *filename )
+{
+ struct stat file_stat;
+ if( stat( filename, &file_stat ) )
+ return -1;
+ return S_ISREG( file_stat.st_mode );
+}
+
#endif /* X264_OSDEP_H */
projects / x264 / blobdiff