diff options
Diffstat (limited to 'src/3rdparty/libjpeg/src/jidctfst.c')
| -rw-r--r-- | src/3rdparty/libjpeg/src/jidctfst.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/src/3rdparty/libjpeg/src/jidctfst.c b/src/3rdparty/libjpeg/src/jidctfst.c index 89a20c937b..68119b9942 100644 --- a/src/3rdparty/libjpeg/src/jidctfst.c +++ b/src/3rdparty/libjpeg/src/jidctfst.c @@ -4,7 +4,7 @@ * This file was part of the Independent JPEG Group's software: * Copyright (C) 1994-1998, Thomas G. Lane. * libjpeg-turbo Modifications: - * Copyright (C) 2015, D. R. Commander. + * Copyright (C) 2015, 2022, D. R. Commander. * For conditions of distribution and use, see the accompanying README.ijg * file. * @@ -64,10 +64,10 @@ * The dequantized coefficients are not integers because the AA&N scaling * factors have been incorporated. We represent them scaled up by PASS1_BITS, * so that the first and second IDCT rounds have the same input scaling. - * For 8-bit JSAMPLEs, we choose IFAST_SCALE_BITS = PASS1_BITS so as to + * For 8-bit samples, we choose IFAST_SCALE_BITS = PASS1_BITS so as to * avoid a descaling shift; this compromises accuracy rather drastically * for small quantization table entries, but it saves a lot of shifts. - * For 12-bit JSAMPLEs, there's no hope of using 16x16 multiplies anyway, + * For 12-bit samples, there's no hope of using 16x16 multiplies anyway, * so we use a much larger scaling factor to preserve accuracy. * * A final compromise is to represent the multiplicative constants to only @@ -168,9 +168,9 @@ */ GLOBAL(void) -jpeg_idct_ifast(j_decompress_ptr cinfo, jpeg_component_info *compptr, - JCOEFPTR coef_block, JSAMPARRAY output_buf, - JDIMENSION output_col) +_jpeg_idct_ifast(j_decompress_ptr cinfo, jpeg_component_info *compptr, + JCOEFPTR coef_block, _JSAMPARRAY output_buf, + JDIMENSION output_col) { DCTELEM tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; DCTELEM tmp10, tmp11, tmp12, tmp13; @@ -178,8 +178,8 @@ jpeg_idct_ifast(j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR inptr; IFAST_MULT_TYPE *quantptr; int *wsptr; - JSAMPROW outptr; - JSAMPLE *range_limit = IDCT_range_limit(cinfo); + _JSAMPROW outptr; + _JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[DCTSIZE2]; /* buffers data between passes */ SHIFT_TEMPS /* for DESCALE */ @@ -296,7 +296,7 @@ jpeg_idct_ifast(j_decompress_ptr cinfo, jpeg_component_info *compptr, if (wsptr[1] == 0 && wsptr[2] == 0 && wsptr[3] == 0 && wsptr[4] == 0 && wsptr[5] == 0 && wsptr[6] == 0 && wsptr[7] == 0) { /* AC terms all zero */ - JSAMPLE dcval = + _JSAMPLE dcval = range_limit[IDESCALE(wsptr[0], PASS1_BITS + 3) & RANGE_MASK]; outptr[0] = dcval; |