diff options
Diffstat (limited to 'jcphuff.c')
| -rw-r--r-- | jcphuff.c | 16 |
1 files changed, 9 insertions, 7 deletions
@@ -4,7 +4,7 @@ * 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 @@ -174,24 +174,26 @@ 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; } @@ -865,7 +867,7 @@ 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; \ @@ -922,7 +924,7 @@ 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; @@ -973,7 +975,7 @@ 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; |