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Diffstat (limited to 'vp10/common/systemdependent.h')
-rw-r--r-- | vp10/common/systemdependent.h | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/vp10/common/systemdependent.h b/vp10/common/systemdependent.h deleted file mode 100644 index 5940d7336..000000000 --- a/vp10/common/systemdependent.h +++ /dev/null @@ -1,84 +0,0 @@ -/* - * Copyright (c) 2010 The WebM project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -#ifndef VP9_COMMON_VP9_SYSTEMDEPENDENT_H_ -#define VP9_COMMON_VP9_SYSTEMDEPENDENT_H_ - -#include "vpx_ports/msvc.h" - -#ifdef _MSC_VER -# include <math.h> // the ceil() definition must precede intrin.h -# if _MSC_VER > 1310 && (defined(_M_X64) || defined(_M_IX86)) -# include <intrin.h> -# define USE_MSC_INTRINSICS -# endif -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -#include "./vpx_config.h" -#if ARCH_X86 || ARCH_X86_64 -void vpx_reset_mmx_state(void); -#define vpx_clear_system_state() vpx_reset_mmx_state() -#else -#define vpx_clear_system_state() -#endif - -#if defined(_MSC_VER) && _MSC_VER < 1800 -// round is not defined in MSVC before VS2013. -static INLINE int round(double x) { - if (x < 0) - return (int)ceil(x - 0.5); - else - return (int)floor(x + 0.5); -} -#endif - -// use GNU builtins where available. -#if defined(__GNUC__) && \ - ((__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || __GNUC__ >= 4) -static INLINE int get_msb(unsigned int n) { - return 31 ^ __builtin_clz(n); -} -#elif defined(USE_MSC_INTRINSICS) -#pragma intrinsic(_BitScanReverse) - -static INLINE int get_msb(unsigned int n) { - unsigned long first_set_bit; - _BitScanReverse(&first_set_bit, n); - return first_set_bit; -} -#undef USE_MSC_INTRINSICS -#else -// Returns (int)floor(log2(n)). n must be > 0. -static INLINE int get_msb(unsigned int n) { - int log = 0; - unsigned int value = n; - int i; - - for (i = 4; i >= 0; --i) { - const int shift = (1 << i); - const unsigned int x = value >> shift; - if (x != 0) { - value = x; - log += shift; - } - } - return log; -} -#endif - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif // VP9_COMMON_VP9_SYSTEMDEPENDENT_H_ |