From 6fd997b710e96e0c66d6dcd2e1c5cfd950d6accd Mon Sep 17 00:00:00 2001 From: Tom Sepez Date: Thu, 18 Jun 2015 17:51:37 -0700 Subject: Merge to XFA: Move libopenjpeg to third_party/ Original Review URL: https://codereview.chromium.org/1185373010. TBR=thestig@chromium.org Review URL: https://codereview.chromium.org/1193773002. --- third_party/libopenjpeg20/opj_intmath.h | 198 ++++++++++++++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 third_party/libopenjpeg20/opj_intmath.h (limited to 'third_party/libopenjpeg20/opj_intmath.h') diff --git a/third_party/libopenjpeg20/opj_intmath.h b/third_party/libopenjpeg20/opj_intmath.h new file mode 100644 index 0000000000..4e299469de --- /dev/null +++ b/third_party/libopenjpeg20/opj_intmath.h @@ -0,0 +1,198 @@ +/* + * 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. + * + * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium + * 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) 2003-2014, Antonin Descampe + * Copyright (c) 2005, Herve Drolon, FreeImage Team + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * 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 +/** +@file opj_intmath.h +@brief Implementation of operations on integers (INT) + +The functions in OPJ_INTMATH.H have for goal to realize operations on integers. +*/ + +/** @defgroup OPJ_INTMATH OPJ_INTMATH - Implementation of operations on integers */ +/*@{*/ + +/** @name Exported functions (see also openjpeg.h) */ +/*@{*/ +/* ----------------------------------------------------------------------- */ +/** +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; +} + +/** +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; +} + +/** +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; +} + +/** +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; +} + +/** + 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)(sum >> 32) | (OPJ_UINT32)sum; +} + +/** +Clamp an integer inside an interval +@return + +*/ +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; +} +/** +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; +} + +/** +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; +} + +/** +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); +} +/** +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; +} +/** +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; +} +/** +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; +} + +/** +Multiply two fixed-precision rational numbers. +@param a +@param b +@return Returns a * b +*/ +static INLINE OPJ_INT32 opj_int_fix_mul(OPJ_INT32 a, OPJ_INT32 b) { + OPJ_INT64 temp = (OPJ_INT64) a * (OPJ_INT64) b ; + 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) { + OPJ_INT64 temp = (OPJ_INT64) a * (OPJ_INT64) b ; + 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)) ; +} + +/* ----------------------------------------------------------------------- */ +/*@}*/ + +/*@}*/ + +#endif -- cgit v1.2.3