diff options
Diffstat (limited to 'src/3rdparty/libjpeg/src/jidctint.c')
| -rw-r--r-- | src/3rdparty/libjpeg/src/jidctint.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/3rdparty/libjpeg/src/jidctint.c b/src/3rdparty/libjpeg/src/jidctint.c index 98425d5fd0..bb08748019 100644 --- a/src/3rdparty/libjpeg/src/jidctint.c +++ b/src/3rdparty/libjpeg/src/jidctint.c @@ -3,13 +3,13 @@ * * This file was part of the Independent JPEG Group's software: * Copyright (C) 1991-1998, Thomas G. Lane. - * Modification developed 2002-2009 by Guido Vollbeding. + * Modification developed 2002-2018 by Guido Vollbeding. * libjpeg-turbo Modifications: - * Copyright (C) 2015, D. R. Commander. + * Copyright (C) 2015, 2020, D. R. Commander. * For conditions of distribution and use, see the accompanying README.ijg * file. * - * This file contains a slow-but-accurate integer implementation of the + * This file contains a slower but more accurate integer implementation of the * inverse DCT (Discrete Cosine Transform). In the IJG code, this routine * must also perform dequantization of the input coefficients. * @@ -417,7 +417,7 @@ jpeg_idct_islow(j_decompress_ptr cinfo, jpeg_component_info *compptr, /* * Perform dequantization and inverse DCT on one block of coefficients, - * producing a 7x7 output block. + * producing a reduced-size 7x7 output block. * * Optimized algorithm with 12 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/14). @@ -1258,7 +1258,7 @@ jpeg_idct_10x10(j_decompress_ptr cinfo, jpeg_component_info *compptr, /* * Perform dequantization and inverse DCT on one block of coefficients, - * producing a 11x11 output block. + * producing an 11x11 output block. * * Optimized algorithm with 24 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/22). @@ -2398,7 +2398,7 @@ jpeg_idct_16x16(j_decompress_ptr cinfo, jpeg_component_info *compptr, tmp0 = DEQUANTIZE(inptr[DCTSIZE * 0], quantptr[DCTSIZE * 0]); tmp0 = LEFT_SHIFT(tmp0, CONST_BITS); /* Add fudge factor here for final descale. */ - tmp0 += 1 << (CONST_BITS - PASS1_BITS - 1); + tmp0 += ONE << (CONST_BITS - PASS1_BITS - 1); z1 = DEQUANTIZE(inptr[DCTSIZE * 4], quantptr[DCTSIZE * 4]); tmp1 = MULTIPLY(z1, FIX(1.306562965)); /* c4[16] = c2[8] */ |