diff options
Diffstat (limited to 'third_party/libopenjpeg20/opj_intmath.h')
| -rw-r--r-- | third_party/libopenjpeg20/opj_intmath.h | 154 |
1 files changed, 87 insertions, 67 deletions
diff --git a/third_party/libopenjpeg20/opj_intmath.h b/third_party/libopenjpeg20/opj_intmath.h index 3f7934c470..cf97c15b12 100644 --- a/third_party/libopenjpeg20/opj_intmath.h +++ b/third_party/libopenjpeg20/opj_intmath.h @@ -1,6 +1,6 @@ /* - * The copyright in this software is being made available under the 2-clauses - * BSD License, included below. This software may be subject to other third + * The copyright in this software is being made available under the 2-clauses + * BSD License, included below. This software may be subject to other third * party and contributor rights, including patent rights, and no such rights * are granted under this license. * @@ -8,7 +8,7 @@ * Copyright (c) 2002-2014, Professor Benoit Macq * Copyright (c) 2001-2003, David Janssens * Copyright (c) 2002-2003, Yannick Verschueren - * Copyright (c) 2003-2007, Francois-Olivier Devaux + * Copyright (c) 2003-2007, Francois-Olivier Devaux * Copyright (c) 2003-2014, Antonin Descampe * Copyright (c) 2005, Herve Drolon, FreeImage Team * All rights reserved. @@ -34,8 +34,8 @@ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ -#ifndef __INT_H -#define __INT_H +#ifndef OPJ_INTMATH_H +#define OPJ_INTMATH_H /** @file opj_intmath.h @brief Implementation of operations on integers (INT) @@ -53,41 +53,46 @@ The functions in OPJ_INTMATH.H have for goal to realize operations on integers. Get the minimum of two integers @return Returns a if a < b else b */ -static INLINE OPJ_INT32 opj_int_min(OPJ_INT32 a, OPJ_INT32 b) { - return a < b ? a : b; +static INLINE OPJ_INT32 opj_int_min(OPJ_INT32 a, OPJ_INT32 b) +{ + return a < b ? a : b; } /** Get the minimum of two integers @return Returns a if a < b else b */ -static INLINE OPJ_UINT32 opj_uint_min(OPJ_UINT32 a, OPJ_UINT32 b) { - return a < b ? a : b; +static INLINE OPJ_UINT32 opj_uint_min(OPJ_UINT32 a, OPJ_UINT32 b) +{ + return a < b ? a : b; } /** Get the maximum of two integers @return Returns a if a > b else b */ -static INLINE OPJ_INT32 opj_int_max(OPJ_INT32 a, OPJ_INT32 b) { - return (a > b) ? a : b; +static INLINE OPJ_INT32 opj_int_max(OPJ_INT32 a, OPJ_INT32 b) +{ + return (a > b) ? a : b; } /** Get the maximum of two integers @return Returns a if a > b else b */ -static INLINE OPJ_UINT32 opj_uint_max(OPJ_UINT32 a, OPJ_UINT32 b) { - return (a > b) ? a : b; +static INLINE OPJ_UINT32 opj_uint_max(OPJ_UINT32 a, OPJ_UINT32 b) +{ + return (a > b) ? a : b; } /** Get the saturated sum of two unsigned integers @return Returns saturated sum of a+b */ -static INLINE OPJ_UINT32 opj_uint_adds(OPJ_UINT32 a, OPJ_UINT32 b) { - OPJ_UINT64 sum = (OPJ_UINT64)a + (OPJ_UINT64)b; - return (OPJ_UINT32)(-(OPJ_INT32)(sum >> 32)) | (OPJ_UINT32)sum; +static INLINE OPJ_UINT32 opj_uint_adds(OPJ_UINT32 a, OPJ_UINT32 b) +{ + OPJ_UINT64 sum = (OPJ_UINT64)a + (OPJ_UINT64)b; + return (OPJ_UINT32)(-(OPJ_INT32)(sum >> 32)) | (OPJ_UINT32)sum; } /** @@ -96,93 +101,105 @@ Clamp an integer inside an interval <ul> <li>Returns a if (min < a < max) <li>Returns max if (a > max) -<li>Returns min if (a < min) +<li>Returns min if (a < min) </ul> */ -static INLINE OPJ_INT32 opj_int_clamp(OPJ_INT32 a, OPJ_INT32 min, OPJ_INT32 max) { - if (a < min) - return min; - if (a > max) - return max; - return a; +static INLINE OPJ_INT32 opj_int_clamp(OPJ_INT32 a, OPJ_INT32 min, + OPJ_INT32 max) +{ + if (a < min) { + return min; + } + if (a > max) { + return max; + } + return a; } /** @return Get absolute value of integer */ -static INLINE OPJ_INT32 opj_int_abs(OPJ_INT32 a) { - return a < 0 ? -a : a; +static INLINE OPJ_INT32 opj_int_abs(OPJ_INT32 a) +{ + return a < 0 ? -a : a; } /** Divide an integer and round upwards @return Returns a divided by b */ -static INLINE OPJ_INT32 opj_int_ceildiv(OPJ_INT32 a, OPJ_INT32 b) { - assert(b); - return (a + b - 1) / b; +static INLINE OPJ_INT32 opj_int_ceildiv(OPJ_INT32 a, OPJ_INT32 b) +{ + assert(b); + return (OPJ_INT32)(((OPJ_INT64)a + b - 1) / b); } /** Divide an integer and round upwards @return Returns a divided by b */ -static INLINE OPJ_UINT32 opj_uint_ceildiv(OPJ_UINT32 a, OPJ_UINT32 b) { - assert(b); - return (a + b - 1) / b; +static INLINE OPJ_UINT32 opj_uint_ceildiv(OPJ_UINT32 a, OPJ_UINT32 b) +{ + assert(b); + return (a + b - 1) / b; } /** Divide an integer by a power of 2 and round upwards @return Returns a divided by 2^b */ -static INLINE OPJ_INT32 opj_int_ceildivpow2(OPJ_INT32 a, OPJ_INT32 b) { - return (OPJ_INT32)((a + ((OPJ_INT64)1 << b) - 1) >> b); +static INLINE OPJ_INT32 opj_int_ceildivpow2(OPJ_INT32 a, OPJ_INT32 b) +{ + return (OPJ_INT32)((a + ((OPJ_INT64)1 << b) - 1) >> b); } /** Divide a 64bits integer by a power of 2 and round upwards @return Returns a divided by 2^b */ -static INLINE OPJ_INT32 opj_int64_ceildivpow2(OPJ_INT64 a, OPJ_INT32 b) { - return (OPJ_INT32)((a + ((OPJ_INT64)1 << b) - 1) >> b); +static INLINE OPJ_INT32 opj_int64_ceildivpow2(OPJ_INT64 a, OPJ_INT32 b) +{ + return (OPJ_INT32)((a + ((OPJ_INT64)1 << b) - 1) >> b); } /** Divide an integer by a power of 2 and round upwards @return Returns a divided by 2^b */ -static INLINE OPJ_UINT32 opj_uint_ceildivpow2(OPJ_UINT32 a, OPJ_UINT32 b) { - return (OPJ_UINT32)((a + ((OPJ_UINT64)1U << b) - 1U) >> b); +static INLINE OPJ_UINT32 opj_uint_ceildivpow2(OPJ_UINT32 a, OPJ_UINT32 b) +{ + return (OPJ_UINT32)((a + ((OPJ_UINT64)1U << b) - 1U) >> b); } /** Divide an integer by a power of 2 and round downwards @return Returns a divided by 2^b */ -static INLINE OPJ_INT32 opj_int_floordivpow2(OPJ_INT32 a, OPJ_INT32 b) { - return a >> b; +static INLINE OPJ_INT32 opj_int_floordivpow2(OPJ_INT32 a, OPJ_INT32 b) +{ + return a >> b; } /** Get logarithm of an integer and round downwards @return Returns log2(a) */ -static INLINE OPJ_INT32 opj_int_floorlog2(OPJ_INT32 a) { - OPJ_INT32 l; - for (l = 0; a > 1; l++) { - a >>= 1; - } - return l; +static INLINE OPJ_INT32 opj_int_floorlog2(OPJ_INT32 a) +{ + OPJ_INT32 l; + for (l = 0; a > 1; l++) { + a >>= 1; + } + return l; } /** Get logarithm of an integer and round downwards @return Returns log2(a) */ -static INLINE OPJ_UINT32 opj_uint_floorlog2(OPJ_UINT32 a) { - OPJ_UINT32 l; - for (l = 0; a > 1; ++l) - { - a >>= 1; - } - return l; +static INLINE OPJ_UINT32 opj_uint_floorlog2(OPJ_UINT32 a) +{ + OPJ_UINT32 l; + for (l = 0; a > 1; ++l) { + a >>= 1; + } + return l; } /** @@ -191,28 +208,31 @@ Multiply two fixed-precision rational numbers. @param b @return Returns a * b */ -static INLINE OPJ_INT32 opj_int_fix_mul(OPJ_INT32 a, OPJ_INT32 b) { +static INLINE OPJ_INT32 opj_int_fix_mul(OPJ_INT32 a, OPJ_INT32 b) +{ #if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__INTEL_COMPILER) && defined(_M_IX86) - OPJ_INT64 temp = __emul(a, b); + OPJ_INT64 temp = __emul(a, b); #else - OPJ_INT64 temp = (OPJ_INT64) a * (OPJ_INT64) b ; + OPJ_INT64 temp = (OPJ_INT64) a * (OPJ_INT64) b ; #endif - temp += 4096; - assert((temp >> 13) <= (OPJ_INT64)0x7FFFFFFF); - assert((temp >> 13) >= (-(OPJ_INT64)0x7FFFFFFF - (OPJ_INT64)1)); - return (OPJ_INT32) (temp >> 13); + temp += 4096; + assert((temp >> 13) <= (OPJ_INT64)0x7FFFFFFF); + assert((temp >> 13) >= (-(OPJ_INT64)0x7FFFFFFF - (OPJ_INT64)1)); + return (OPJ_INT32)(temp >> 13); } -static INLINE OPJ_INT32 opj_int_fix_mul_t1(OPJ_INT32 a, OPJ_INT32 b) { +static INLINE OPJ_INT32 opj_int_fix_mul_t1(OPJ_INT32 a, OPJ_INT32 b) +{ #if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__INTEL_COMPILER) && defined(_M_IX86) - OPJ_INT64 temp = __emul(a, b); + OPJ_INT64 temp = __emul(a, b); #else - OPJ_INT64 temp = (OPJ_INT64) a * (OPJ_INT64) b ; + OPJ_INT64 temp = (OPJ_INT64) a * (OPJ_INT64) b ; #endif - temp += 4096; - assert((temp >> (13 + 11 - T1_NMSEDEC_FRACBITS)) <= (OPJ_INT64)0x7FFFFFFF); - assert((temp >> (13 + 11 - T1_NMSEDEC_FRACBITS)) >= (-(OPJ_INT64)0x7FFFFFFF - (OPJ_INT64)1)); - return (OPJ_INT32) (temp >> (13 + 11 - T1_NMSEDEC_FRACBITS)) ; + temp += 4096; + assert((temp >> (13 + 11 - T1_NMSEDEC_FRACBITS)) <= (OPJ_INT64)0x7FFFFFFF); + assert((temp >> (13 + 11 - T1_NMSEDEC_FRACBITS)) >= (-(OPJ_INT64)0x7FFFFFFF - + (OPJ_INT64)1)); + return (OPJ_INT32)(temp >> (13 + 11 - T1_NMSEDEC_FRACBITS)) ; } /* ----------------------------------------------------------------------- */ @@ -220,4 +240,4 @@ static INLINE OPJ_INT32 opj_int_fix_mul_t1(OPJ_INT32 a, OPJ_INT32 b) { /*@}*/ -#endif +#endif /* OPJ_INTMATH_H */ |