diff options
Diffstat (limited to 'src/3rdparty/libjpeg/src/jcphuff.c')
| -rw-r--r-- | src/3rdparty/libjpeg/src/jcphuff.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/src/3rdparty/libjpeg/src/jcphuff.c b/src/3rdparty/libjpeg/src/jcphuff.c index a8b94bed84..9bf96124b4 100644 --- a/src/3rdparty/libjpeg/src/jcphuff.c +++ b/src/3rdparty/libjpeg/src/jcphuff.c @@ -4,8 +4,9 @@ * This file was part of the Independent JPEG Group's software: * Copyright (C) 1995-1997, Thomas G. Lane. * libjpeg-turbo Modifications: - * Copyright (C) 2011, 2015, 2018, D. R. Commander. + * Copyright (C) 2011, 2015, 2018, 2021, D. R. Commander. * Copyright (C) 2016, 2018, Matthieu Darbois. + * Copyright (C) 2020, Arm Limited. * For conditions of distribution and use, see the accompanying README.ijg * file. * @@ -52,14 +53,19 @@ */ /* NOTE: Both GCC and Clang define __GNUC__ */ -#if defined(__GNUC__) && (defined(__arm__) || defined(__aarch64__)) +#if (defined(__GNUC__) && (defined(__arm__) || defined(__aarch64__))) || \ + defined(_M_ARM) || defined(_M_ARM64) #if !defined(__thumb__) || defined(__thumb2__) #define USE_CLZ_INTRINSIC #endif #endif #ifdef USE_CLZ_INTRINSIC +#if defined(_MSC_VER) && !defined(__clang__) +#define JPEG_NBITS_NONZERO(x) (32 - _CountLeadingZeros(x)) +#else #define JPEG_NBITS_NONZERO(x) (32 - __builtin_clz(x)) +#endif #define JPEG_NBITS(x) (x ? JPEG_NBITS_NONZERO(x) : 0) #else #include "jpeg_nbits_table.h" @@ -169,24 +175,26 @@ INLINE METHODDEF(int) count_zeroes(size_t *x) { - int result; #if defined(HAVE_BUILTIN_CTZL) + int result; result = __builtin_ctzl(*x); *x >>= result; #elif defined(HAVE_BITSCANFORWARD64) + unsigned long result; _BitScanForward64(&result, *x); *x >>= result; #elif defined(HAVE_BITSCANFORWARD) + unsigned long result; _BitScanForward(&result, *x); *x >>= result; #else - result = 0; + int result = 0; while ((*x & 1) == 0) { ++result; *x >>= 1; } #endif - return result; + return (int)result; } @@ -860,7 +868,7 @@ encode_mcu_AC_refine_prepare(const JCOEF *block, #define ENCODE_COEFS_AC_REFINE(label) { \ while (zerobits) { \ - int idx = count_zeroes(&zerobits); \ + idx = count_zeroes(&zerobits); \ r += idx; \ cabsvalue += idx; \ signbits >>= idx; \ @@ -917,7 +925,7 @@ METHODDEF(boolean) encode_mcu_AC_refine(j_compress_ptr cinfo, JBLOCKROW *MCU_data) { phuff_entropy_ptr entropy = (phuff_entropy_ptr)cinfo->entropy; - register int temp, r; + register int temp, r, idx; char *BR_buffer; unsigned int BR; int Sl = cinfo->Se - cinfo->Ss + 1; @@ -968,7 +976,7 @@ encode_mcu_AC_refine(j_compress_ptr cinfo, JBLOCKROW *MCU_data) if (zerobits) { int diff = ((absvalues + DCTSIZE2 / 2) - cabsvalue); - int idx = count_zeroes(&zerobits); + idx = count_zeroes(&zerobits); signbits >>= idx; idx += diff; r += idx; |