Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * jccolor.c |
| 3 | * |
DRC | a73e870 | 2012-12-31 02:52:30 +0000 | [diff] [blame] | 4 | * This file was part of the Independent JPEG Group's software: |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 5 | * Copyright (C) 1991-1996, Thomas G. Lane. |
DRC | a6ef282 | 2013-09-28 03:23:49 +0000 | [diff] [blame] | 6 | * libjpeg-turbo Modifications: |
Pierre Ossman | 59a3938 | 2009-03-09 13:15:56 +0000 | [diff] [blame] | 7 | * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
Alex Naidis | 6eb7d37 | 2016-10-16 23:10:08 +0200 | [diff] [blame] | 8 | * Copyright (C) 2009-2012, 2015, D. R. Commander. |
| 9 | * Copyright (C) 2014, MIPS Technologies, Inc., California. |
| 10 | * For conditions of distribution and use, see the accompanying README.ijg |
| 11 | * file. |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 12 | * |
| 13 | * This file contains input colorspace conversion routines. |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 16 | #define JPEG_INTERNALS |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 17 | #include "jinclude.h" |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 18 | #include "jpeglib.h" |
Pierre Ossman | 59a3938 | 2009-03-09 13:15:56 +0000 | [diff] [blame] | 19 | #include "jsimd.h" |
DRC | ff6961f | 2014-04-20 09:17:11 +0000 | [diff] [blame] | 20 | #include "jconfigint.h" |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 21 | |
| 22 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 23 | /* Private subobject */ |
| 24 | |
| 25 | typedef struct { |
| 26 | struct jpeg_color_converter pub; /* public fields */ |
| 27 | |
| 28 | /* Private state for RGB->YCC conversion */ |
Alex Naidis | 6eb7d37 | 2016-10-16 23:10:08 +0200 | [diff] [blame] | 29 | JLONG *rgb_ycc_tab; /* => table for RGB to YCbCr conversion */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 30 | } my_color_converter; |
| 31 | |
Alex Naidis | 6eb7d37 | 2016-10-16 23:10:08 +0200 | [diff] [blame] | 32 | typedef my_color_converter *my_cconvert_ptr; |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 33 | |
| 34 | |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 35 | /**************** RGB -> YCbCr conversion: most common case **************/ |
| 36 | |
| 37 | /* |
| 38 | * YCbCr is defined per CCIR 601-1, except that Cb and Cr are |
| 39 | * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. |
| 40 | * The conversion equations to be implemented are therefore |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 41 | * Y = 0.29900 * R + 0.58700 * G + 0.11400 * B |
| 42 | * Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE |
| 43 | * Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 44 | * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.) |
Thomas G. Lane | 9ba2f5e | 1994-12-07 00:00:00 +0000 | [diff] [blame] | 45 | * Note: older versions of the IJG code used a zero offset of MAXJSAMPLE/2, |
| 46 | * rather than CENTERJSAMPLE, for Cb and Cr. This gave equal positive and |
| 47 | * negative swings for Cb/Cr, but meant that grayscale values (Cb=Cr=0) |
| 48 | * were not represented exactly. Now we sacrifice exact representation of |
| 49 | * maximum red and maximum blue in order to get exact grayscales. |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 50 | * |
| 51 | * To avoid floating-point arithmetic, we represent the fractional constants |
| 52 | * as integers scaled up by 2^16 (about 4 digits precision); we have to divide |
| 53 | * the products by 2^16, with appropriate rounding, to get the correct answer. |
| 54 | * |
| 55 | * For even more speed, we avoid doing any multiplications in the inner loop |
| 56 | * by precalculating the constants times R,G,B for all possible values. |
| 57 | * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table); |
| 58 | * for 12-bit samples it is still acceptable. It's not very reasonable for |
| 59 | * 16-bit samples, but if you want lossless storage you shouldn't be changing |
| 60 | * colorspace anyway. |
Thomas G. Lane | 9ba2f5e | 1994-12-07 00:00:00 +0000 | [diff] [blame] | 61 | * The CENTERJSAMPLE offsets and the rounding fudge-factor of 0.5 are included |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 62 | * in the tables to save adding them separately in the inner loop. |
| 63 | */ |
| 64 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 65 | #define SCALEBITS 16 /* speediest right-shift on some machines */ |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 66 | #define CBCR_OFFSET ((JLONG)CENTERJSAMPLE << SCALEBITS) |
| 67 | #define ONE_HALF ((JLONG)1 << (SCALEBITS - 1)) |
| 68 | #define FIX(x) ((JLONG)((x) * (1L << SCALEBITS) + 0.5)) |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 69 | |
| 70 | /* We allocate one big table and divide it up into eight parts, instead of |
| 71 | * doing eight alloc_small requests. This lets us use a single table base |
| 72 | * address, which can be held in a register in the inner loops on many |
| 73 | * machines (more than can hold all eight addresses, anyway). |
| 74 | */ |
| 75 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 76 | #define R_Y_OFF 0 /* offset to R => Y section */ |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 77 | #define G_Y_OFF (1 * (MAXJSAMPLE + 1)) /* offset to G => Y section */ |
| 78 | #define B_Y_OFF (2 * (MAXJSAMPLE + 1)) /* etc. */ |
| 79 | #define R_CB_OFF (3 * (MAXJSAMPLE + 1)) |
| 80 | #define G_CB_OFF (4 * (MAXJSAMPLE + 1)) |
| 81 | #define B_CB_OFF (5 * (MAXJSAMPLE + 1)) |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 82 | #define R_CR_OFF B_CB_OFF /* B=>Cb, R=>Cr are the same */ |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 83 | #define G_CR_OFF (6 * (MAXJSAMPLE + 1)) |
| 84 | #define B_CR_OFF (7 * (MAXJSAMPLE + 1)) |
| 85 | #define TABLE_SIZE (8 * (MAXJSAMPLE + 1)) |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 86 | |
| 87 | |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 88 | /* Include inline routines for colorspace extensions */ |
| 89 | |
| 90 | #include "jccolext.c" |
| 91 | #undef RGB_RED |
| 92 | #undef RGB_GREEN |
| 93 | #undef RGB_BLUE |
| 94 | #undef RGB_PIXELSIZE |
| 95 | |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 96 | #define RGB_RED EXT_RGB_RED |
| 97 | #define RGB_GREEN EXT_RGB_GREEN |
| 98 | #define RGB_BLUE EXT_RGB_BLUE |
| 99 | #define RGB_PIXELSIZE EXT_RGB_PIXELSIZE |
| 100 | #define rgb_ycc_convert_internal extrgb_ycc_convert_internal |
| 101 | #define rgb_gray_convert_internal extrgb_gray_convert_internal |
| 102 | #define rgb_rgb_convert_internal extrgb_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 103 | #include "jccolext.c" |
| 104 | #undef RGB_RED |
| 105 | #undef RGB_GREEN |
| 106 | #undef RGB_BLUE |
| 107 | #undef RGB_PIXELSIZE |
| 108 | #undef rgb_ycc_convert_internal |
| 109 | #undef rgb_gray_convert_internal |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 110 | #undef rgb_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 111 | |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 112 | #define RGB_RED EXT_RGBX_RED |
| 113 | #define RGB_GREEN EXT_RGBX_GREEN |
| 114 | #define RGB_BLUE EXT_RGBX_BLUE |
| 115 | #define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE |
| 116 | #define rgb_ycc_convert_internal extrgbx_ycc_convert_internal |
| 117 | #define rgb_gray_convert_internal extrgbx_gray_convert_internal |
| 118 | #define rgb_rgb_convert_internal extrgbx_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 119 | #include "jccolext.c" |
| 120 | #undef RGB_RED |
| 121 | #undef RGB_GREEN |
| 122 | #undef RGB_BLUE |
| 123 | #undef RGB_PIXELSIZE |
| 124 | #undef rgb_ycc_convert_internal |
| 125 | #undef rgb_gray_convert_internal |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 126 | #undef rgb_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 127 | |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 128 | #define RGB_RED EXT_BGR_RED |
| 129 | #define RGB_GREEN EXT_BGR_GREEN |
| 130 | #define RGB_BLUE EXT_BGR_BLUE |
| 131 | #define RGB_PIXELSIZE EXT_BGR_PIXELSIZE |
| 132 | #define rgb_ycc_convert_internal extbgr_ycc_convert_internal |
| 133 | #define rgb_gray_convert_internal extbgr_gray_convert_internal |
| 134 | #define rgb_rgb_convert_internal extbgr_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 135 | #include "jccolext.c" |
| 136 | #undef RGB_RED |
| 137 | #undef RGB_GREEN |
| 138 | #undef RGB_BLUE |
| 139 | #undef RGB_PIXELSIZE |
| 140 | #undef rgb_ycc_convert_internal |
| 141 | #undef rgb_gray_convert_internal |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 142 | #undef rgb_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 143 | |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 144 | #define RGB_RED EXT_BGRX_RED |
| 145 | #define RGB_GREEN EXT_BGRX_GREEN |
| 146 | #define RGB_BLUE EXT_BGRX_BLUE |
| 147 | #define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE |
| 148 | #define rgb_ycc_convert_internal extbgrx_ycc_convert_internal |
| 149 | #define rgb_gray_convert_internal extbgrx_gray_convert_internal |
| 150 | #define rgb_rgb_convert_internal extbgrx_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 151 | #include "jccolext.c" |
| 152 | #undef RGB_RED |
| 153 | #undef RGB_GREEN |
| 154 | #undef RGB_BLUE |
| 155 | #undef RGB_PIXELSIZE |
| 156 | #undef rgb_ycc_convert_internal |
| 157 | #undef rgb_gray_convert_internal |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 158 | #undef rgb_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 159 | |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 160 | #define RGB_RED EXT_XBGR_RED |
| 161 | #define RGB_GREEN EXT_XBGR_GREEN |
| 162 | #define RGB_BLUE EXT_XBGR_BLUE |
| 163 | #define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE |
| 164 | #define rgb_ycc_convert_internal extxbgr_ycc_convert_internal |
| 165 | #define rgb_gray_convert_internal extxbgr_gray_convert_internal |
| 166 | #define rgb_rgb_convert_internal extxbgr_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 167 | #include "jccolext.c" |
| 168 | #undef RGB_RED |
| 169 | #undef RGB_GREEN |
| 170 | #undef RGB_BLUE |
| 171 | #undef RGB_PIXELSIZE |
| 172 | #undef rgb_ycc_convert_internal |
| 173 | #undef rgb_gray_convert_internal |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 174 | #undef rgb_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 175 | |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 176 | #define RGB_RED EXT_XRGB_RED |
| 177 | #define RGB_GREEN EXT_XRGB_GREEN |
| 178 | #define RGB_BLUE EXT_XRGB_BLUE |
| 179 | #define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE |
| 180 | #define rgb_ycc_convert_internal extxrgb_ycc_convert_internal |
| 181 | #define rgb_gray_convert_internal extxrgb_gray_convert_internal |
| 182 | #define rgb_rgb_convert_internal extxrgb_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 183 | #include "jccolext.c" |
| 184 | #undef RGB_RED |
| 185 | #undef RGB_GREEN |
| 186 | #undef RGB_BLUE |
| 187 | #undef RGB_PIXELSIZE |
| 188 | #undef rgb_ycc_convert_internal |
| 189 | #undef rgb_gray_convert_internal |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 190 | #undef rgb_rgb_convert_internal |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 191 | |
| 192 | |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 193 | /* |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 194 | * Initialize for RGB->YCC colorspace conversion. |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 195 | */ |
| 196 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 197 | METHODDEF(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 198 | rgb_ycc_start(j_compress_ptr cinfo) |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 199 | { |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 200 | my_cconvert_ptr cconvert = (my_cconvert_ptr)cinfo->cconvert; |
Alex Naidis | 6eb7d37 | 2016-10-16 23:10:08 +0200 | [diff] [blame] | 201 | JLONG *rgb_ycc_tab; |
| 202 | JLONG i; |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 203 | |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 204 | /* Allocate and fill in the conversion tables. */ |
Alex Naidis | 6eb7d37 | 2016-10-16 23:10:08 +0200 | [diff] [blame] | 205 | cconvert->rgb_ycc_tab = rgb_ycc_tab = (JLONG *) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 206 | (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, |
Alex Naidis | 6eb7d37 | 2016-10-16 23:10:08 +0200 | [diff] [blame] | 207 | (TABLE_SIZE * sizeof(JLONG))); |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 208 | |
| 209 | for (i = 0; i <= MAXJSAMPLE; i++) { |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 210 | rgb_ycc_tab[i + R_Y_OFF] = FIX(0.29900) * i; |
| 211 | rgb_ycc_tab[i + G_Y_OFF] = FIX(0.58700) * i; |
| 212 | rgb_ycc_tab[i + B_Y_OFF] = FIX(0.11400) * i + ONE_HALF; |
| 213 | rgb_ycc_tab[i + R_CB_OFF] = (-FIX(0.16874)) * i; |
| 214 | rgb_ycc_tab[i + G_CB_OFF] = (-FIX(0.33126)) * i; |
Thomas G. Lane | 9ba2f5e | 1994-12-07 00:00:00 +0000 | [diff] [blame] | 215 | /* We use a rounding fudge-factor of 0.5-epsilon for Cb and Cr. |
| 216 | * This ensures that the maximum output will round to MAXJSAMPLE |
| 217 | * not MAXJSAMPLE+1, and thus that we don't have to range-limit. |
| 218 | */ |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 219 | rgb_ycc_tab[i + B_CB_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF - 1; |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 220 | /* B=>Cb and R=>Cr tables are the same |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 221 | rgb_ycc_tab[i + R_CR_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF - 1; |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 222 | */ |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 223 | rgb_ycc_tab[i + G_CR_OFF] = (-FIX(0.41869)) * i; |
| 224 | rgb_ycc_tab[i + B_CR_OFF] = (-FIX(0.08131)) * i; |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 225 | } |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | |
| 229 | /* |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 230 | * Convert some rows of samples to the JPEG colorspace. |
Thomas G. Lane | 4a6b730 | 1992-03-17 00:00:00 +0000 | [diff] [blame] | 231 | */ |
| 232 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 233 | METHODDEF(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 234 | rgb_ycc_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf, |
| 235 | JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 236 | { |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 237 | switch (cinfo->in_color_space) { |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 238 | case JCS_EXT_RGB: |
| 239 | extrgb_ycc_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 240 | num_rows); |
| 241 | break; |
| 242 | case JCS_EXT_RGBX: |
| 243 | case JCS_EXT_RGBA: |
| 244 | extrgbx_ycc_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 245 | num_rows); |
| 246 | break; |
| 247 | case JCS_EXT_BGR: |
| 248 | extbgr_ycc_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 249 | num_rows); |
| 250 | break; |
| 251 | case JCS_EXT_BGRX: |
| 252 | case JCS_EXT_BGRA: |
| 253 | extbgrx_ycc_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 254 | num_rows); |
| 255 | break; |
| 256 | case JCS_EXT_XBGR: |
| 257 | case JCS_EXT_ABGR: |
| 258 | extxbgr_ycc_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 259 | num_rows); |
| 260 | break; |
| 261 | case JCS_EXT_XRGB: |
| 262 | case JCS_EXT_ARGB: |
| 263 | extxrgb_ycc_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 264 | num_rows); |
| 265 | break; |
| 266 | default: |
| 267 | rgb_ycc_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 268 | num_rows); |
| 269 | break; |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 270 | } |
| 271 | } |
| 272 | |
| 273 | |
| 274 | /**************** Cases other than RGB -> YCbCr **************/ |
| 275 | |
| 276 | |
| 277 | /* |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 278 | * Convert some rows of samples to the JPEG colorspace. |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 279 | */ |
| 280 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 281 | METHODDEF(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 282 | rgb_gray_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf, |
| 283 | JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 284 | { |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 285 | switch (cinfo->in_color_space) { |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 286 | case JCS_EXT_RGB: |
| 287 | extrgb_gray_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 288 | num_rows); |
| 289 | break; |
| 290 | case JCS_EXT_RGBX: |
| 291 | case JCS_EXT_RGBA: |
| 292 | extrgbx_gray_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 293 | num_rows); |
| 294 | break; |
| 295 | case JCS_EXT_BGR: |
| 296 | extbgr_gray_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 297 | num_rows); |
| 298 | break; |
| 299 | case JCS_EXT_BGRX: |
| 300 | case JCS_EXT_BGRA: |
| 301 | extbgrx_gray_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 302 | num_rows); |
| 303 | break; |
| 304 | case JCS_EXT_XBGR: |
| 305 | case JCS_EXT_ABGR: |
| 306 | extxbgr_gray_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 307 | num_rows); |
| 308 | break; |
| 309 | case JCS_EXT_XRGB: |
| 310 | case JCS_EXT_ARGB: |
| 311 | extxrgb_gray_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 312 | num_rows); |
| 313 | break; |
| 314 | default: |
| 315 | rgb_gray_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 316 | num_rows); |
| 317 | break; |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 318 | } |
| 319 | } |
| 320 | |
| 321 | |
| 322 | /* |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 323 | * Extended RGB to plain RGB conversion |
| 324 | */ |
| 325 | |
| 326 | METHODDEF(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 327 | rgb_rgb_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf, |
| 328 | JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 329 | { |
| 330 | switch (cinfo->in_color_space) { |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 331 | case JCS_EXT_RGB: |
| 332 | extrgb_rgb_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 333 | num_rows); |
| 334 | break; |
| 335 | case JCS_EXT_RGBX: |
| 336 | case JCS_EXT_RGBA: |
| 337 | extrgbx_rgb_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 338 | num_rows); |
| 339 | break; |
| 340 | case JCS_EXT_BGR: |
| 341 | extbgr_rgb_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 342 | num_rows); |
| 343 | break; |
| 344 | case JCS_EXT_BGRX: |
| 345 | case JCS_EXT_BGRA: |
| 346 | extbgrx_rgb_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 347 | num_rows); |
| 348 | break; |
| 349 | case JCS_EXT_XBGR: |
| 350 | case JCS_EXT_ABGR: |
| 351 | extxbgr_rgb_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 352 | num_rows); |
| 353 | break; |
| 354 | case JCS_EXT_XRGB: |
| 355 | case JCS_EXT_ARGB: |
| 356 | extxrgb_rgb_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 357 | num_rows); |
| 358 | break; |
| 359 | default: |
| 360 | rgb_rgb_convert_internal(cinfo, input_buf, output_buf, output_row, |
| 361 | num_rows); |
| 362 | break; |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 363 | } |
| 364 | } |
| 365 | |
| 366 | |
| 367 | /* |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 368 | * Convert some rows of samples to the JPEG colorspace. |
| 369 | * This version handles Adobe-style CMYK->YCCK conversion, |
| 370 | * where we convert R=1-C, G=1-M, and B=1-Y to YCbCr using the same |
| 371 | * conversion as above, while passing K (black) unchanged. |
| 372 | * We assume rgb_ycc_start has been called. |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 373 | */ |
| 374 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 375 | METHODDEF(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 376 | cmyk_ycck_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf, |
| 377 | JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 378 | { |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 379 | my_cconvert_ptr cconvert = (my_cconvert_ptr)cinfo->cconvert; |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 380 | register int r, g, b; |
Alex Naidis | 6eb7d37 | 2016-10-16 23:10:08 +0200 | [diff] [blame] | 381 | register JLONG *ctab = cconvert->rgb_ycc_tab; |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 382 | register JSAMPROW inptr; |
| 383 | register JSAMPROW outptr0, outptr1, outptr2, outptr3; |
| 384 | register JDIMENSION col; |
| 385 | JDIMENSION num_cols = cinfo->image_width; |
Thomas G. Lane | 88aeed4 | 1992-12-10 00:00:00 +0000 | [diff] [blame] | 386 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 387 | while (--num_rows >= 0) { |
| 388 | inptr = *input_buf++; |
| 389 | outptr0 = output_buf[0][output_row]; |
| 390 | outptr1 = output_buf[1][output_row]; |
| 391 | outptr2 = output_buf[2][output_row]; |
| 392 | outptr3 = output_buf[3][output_row]; |
| 393 | output_row++; |
| 394 | for (col = 0; col < num_cols; col++) { |
| 395 | r = MAXJSAMPLE - GETJSAMPLE(inptr[0]); |
| 396 | g = MAXJSAMPLE - GETJSAMPLE(inptr[1]); |
| 397 | b = MAXJSAMPLE - GETJSAMPLE(inptr[2]); |
| 398 | /* K passes through as-is */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 399 | outptr3[col] = inptr[3]; /* don't need GETJSAMPLE here */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 400 | inptr += 4; |
| 401 | /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations |
| 402 | * must be too; we do not need an explicit range-limiting operation. |
| 403 | * Hence the value being shifted is never negative, and we don't |
| 404 | * need the general RIGHT_SHIFT macro. |
| 405 | */ |
| 406 | /* Y */ |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 407 | outptr0[col] = (JSAMPLE)((ctab[r + R_Y_OFF] + ctab[g + G_Y_OFF] + |
| 408 | ctab[b + B_Y_OFF]) >> SCALEBITS); |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 409 | /* Cb */ |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 410 | outptr1[col] = (JSAMPLE)((ctab[r + R_CB_OFF] + ctab[g + G_CB_OFF] + |
| 411 | ctab[b + B_CB_OFF]) >> SCALEBITS); |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 412 | /* Cr */ |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 413 | outptr2[col] = (JSAMPLE)((ctab[r + R_CR_OFF] + ctab[g + G_CR_OFF] + |
| 414 | ctab[b + B_CR_OFF]) >> SCALEBITS); |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 415 | } |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | |
| 420 | /* |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 421 | * Convert some rows of samples to the JPEG colorspace. |
| 422 | * This version handles grayscale output with no conversion. |
| 423 | * The source can be either plain grayscale or YCbCr (since Y == gray). |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 424 | */ |
| 425 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 426 | METHODDEF(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 427 | grayscale_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf, |
| 428 | JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 429 | { |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 430 | register JSAMPROW inptr; |
| 431 | register JSAMPROW outptr; |
| 432 | register JDIMENSION col; |
| 433 | JDIMENSION num_cols = cinfo->image_width; |
| 434 | int instride = cinfo->input_components; |
| 435 | |
| 436 | while (--num_rows >= 0) { |
| 437 | inptr = *input_buf++; |
| 438 | outptr = output_buf[0][output_row]; |
| 439 | output_row++; |
| 440 | for (col = 0; col < num_cols; col++) { |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 441 | outptr[col] = inptr[0]; /* don't need GETJSAMPLE() here */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 442 | inptr += instride; |
| 443 | } |
| 444 | } |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 445 | } |
| 446 | |
| 447 | |
| 448 | /* |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 449 | * Convert some rows of samples to the JPEG colorspace. |
| 450 | * This version handles multi-component colorspaces without conversion. |
| 451 | * We assume input_components == num_components. |
| 452 | */ |
| 453 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 454 | METHODDEF(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 455 | null_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, |
| 456 | JDIMENSION output_row, int num_rows) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 457 | { |
| 458 | register JSAMPROW inptr; |
DRC | 0e94025 | 2015-01-20 10:33:32 +0000 | [diff] [blame] | 459 | register JSAMPROW outptr, outptr0, outptr1, outptr2, outptr3; |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 460 | register JDIMENSION col; |
| 461 | register int ci; |
| 462 | int nc = cinfo->num_components; |
| 463 | JDIMENSION num_cols = cinfo->image_width; |
| 464 | |
DRC | 0e94025 | 2015-01-20 10:33:32 +0000 | [diff] [blame] | 465 | if (nc == 3) { |
| 466 | while (--num_rows >= 0) { |
| 467 | inptr = *input_buf++; |
| 468 | outptr0 = output_buf[0][output_row]; |
| 469 | outptr1 = output_buf[1][output_row]; |
| 470 | outptr2 = output_buf[2][output_row]; |
| 471 | output_row++; |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 472 | for (col = 0; col < num_cols; col++) { |
DRC | 0e94025 | 2015-01-20 10:33:32 +0000 | [diff] [blame] | 473 | outptr0[col] = *inptr++; |
| 474 | outptr1[col] = *inptr++; |
| 475 | outptr2[col] = *inptr++; |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 476 | } |
| 477 | } |
DRC | 0e94025 | 2015-01-20 10:33:32 +0000 | [diff] [blame] | 478 | } else if (nc == 4) { |
| 479 | while (--num_rows >= 0) { |
| 480 | inptr = *input_buf++; |
| 481 | outptr0 = output_buf[0][output_row]; |
| 482 | outptr1 = output_buf[1][output_row]; |
| 483 | outptr2 = output_buf[2][output_row]; |
| 484 | outptr3 = output_buf[3][output_row]; |
| 485 | output_row++; |
| 486 | for (col = 0; col < num_cols; col++) { |
| 487 | outptr0[col] = *inptr++; |
| 488 | outptr1[col] = *inptr++; |
| 489 | outptr2[col] = *inptr++; |
| 490 | outptr3[col] = *inptr++; |
| 491 | } |
| 492 | } |
| 493 | } else { |
| 494 | while (--num_rows >= 0) { |
| 495 | /* It seems fastest to make a separate pass for each component. */ |
| 496 | for (ci = 0; ci < nc; ci++) { |
| 497 | inptr = *input_buf; |
| 498 | outptr = output_buf[ci][output_row]; |
| 499 | for (col = 0; col < num_cols; col++) { |
| 500 | outptr[col] = inptr[ci]; /* don't need GETJSAMPLE() here */ |
| 501 | inptr += nc; |
| 502 | } |
| 503 | } |
| 504 | input_buf++; |
| 505 | output_row++; |
| 506 | } |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 507 | } |
| 508 | } |
| 509 | |
| 510 | |
| 511 | /* |
| 512 | * Empty method for start_pass. |
| 513 | */ |
| 514 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 515 | METHODDEF(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 516 | null_method(j_compress_ptr cinfo) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 517 | { |
| 518 | /* no work needed */ |
| 519 | } |
| 520 | |
| 521 | |
| 522 | /* |
| 523 | * Module initialization routine for input colorspace conversion. |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 524 | */ |
| 525 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 526 | GLOBAL(void) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 527 | jinit_color_converter(j_compress_ptr cinfo) |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 528 | { |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 529 | my_cconvert_ptr cconvert; |
| 530 | |
| 531 | cconvert = (my_cconvert_ptr) |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 532 | (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, |
DRC | 5de454b | 2014-05-18 19:04:03 +0000 | [diff] [blame] | 533 | sizeof(my_color_converter)); |
Leon Scroggins III | 3993b37 | 2018-07-16 10:43:45 -0400 | [diff] [blame] | 534 | cinfo->cconvert = (struct jpeg_color_converter *)cconvert; |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 535 | /* set start_pass to null method until we find out differently */ |
| 536 | cconvert->pub.start_pass = null_method; |
| 537 | |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 538 | /* Make sure input_components agrees with in_color_space */ |
| 539 | switch (cinfo->in_color_space) { |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 540 | case JCS_GRAYSCALE: |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 541 | if (cinfo->input_components != 1) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 542 | ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 543 | break; |
| 544 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 545 | case JCS_RGB: |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 546 | case JCS_EXT_RGB: |
| 547 | case JCS_EXT_RGBX: |
| 548 | case JCS_EXT_BGR: |
| 549 | case JCS_EXT_BGRX: |
| 550 | case JCS_EXT_XBGR: |
| 551 | case JCS_EXT_XRGB: |
DRC | 67ce3b2 | 2011-12-19 02:21:03 +0000 | [diff] [blame] | 552 | case JCS_EXT_RGBA: |
| 553 | case JCS_EXT_BGRA: |
| 554 | case JCS_EXT_ABGR: |
| 555 | case JCS_EXT_ARGB: |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 556 | if (cinfo->input_components != rgb_pixelsize[cinfo->in_color_space]) |
| 557 | ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); |
| 558 | break; |
| 559 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 560 | case JCS_YCbCr: |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 561 | if (cinfo->input_components != 3) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 562 | ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 563 | break; |
| 564 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 565 | case JCS_CMYK: |
| 566 | case JCS_YCCK: |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 567 | if (cinfo->input_components != 4) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 568 | ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 569 | break; |
| 570 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 571 | default: /* JCS_UNKNOWN can be anything */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 572 | if (cinfo->input_components < 1) |
| 573 | ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 574 | break; |
| 575 | } |
| 576 | |
| 577 | /* Check num_components, set conversion method based on requested space */ |
| 578 | switch (cinfo->jpeg_color_space) { |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 579 | case JCS_GRAYSCALE: |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 580 | if (cinfo->num_components != 1) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 581 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
| 582 | if (cinfo->in_color_space == JCS_GRAYSCALE) |
| 583 | cconvert->pub.color_convert = grayscale_convert; |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 584 | else if (cinfo->in_color_space == JCS_RGB || |
| 585 | cinfo->in_color_space == JCS_EXT_RGB || |
| 586 | cinfo->in_color_space == JCS_EXT_RGBX || |
| 587 | cinfo->in_color_space == JCS_EXT_BGR || |
| 588 | cinfo->in_color_space == JCS_EXT_BGRX || |
| 589 | cinfo->in_color_space == JCS_EXT_XBGR || |
DRC | 67ce3b2 | 2011-12-19 02:21:03 +0000 | [diff] [blame] | 590 | cinfo->in_color_space == JCS_EXT_XRGB || |
| 591 | cinfo->in_color_space == JCS_EXT_RGBA || |
| 592 | cinfo->in_color_space == JCS_EXT_BGRA || |
| 593 | cinfo->in_color_space == JCS_EXT_ABGR || |
| 594 | cinfo->in_color_space == JCS_EXT_ARGB) { |
DRC | c866633 | 2011-02-18 11:23:45 +0000 | [diff] [blame] | 595 | if (jsimd_can_rgb_gray()) |
| 596 | cconvert->pub.color_convert = jsimd_rgb_gray_convert; |
| 597 | else { |
| 598 | cconvert->pub.start_pass = rgb_ycc_start; |
| 599 | cconvert->pub.color_convert = rgb_gray_convert; |
| 600 | } |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 601 | } else if (cinfo->in_color_space == JCS_YCbCr) |
| 602 | cconvert->pub.color_convert = grayscale_convert; |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 603 | else |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 604 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 605 | break; |
| 606 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 607 | case JCS_RGB: |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 608 | if (cinfo->num_components != 3) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 609 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 610 | if (rgb_red[cinfo->in_color_space] == 0 && |
| 611 | rgb_green[cinfo->in_color_space] == 1 && |
| 612 | rgb_blue[cinfo->in_color_space] == 2 && |
DRC | 1b3fd7e | 2014-05-15 18:26:01 +0000 | [diff] [blame] | 613 | rgb_pixelsize[cinfo->in_color_space] == 3) { |
| 614 | #if defined(__mips__) |
| 615 | if (jsimd_c_can_null_convert()) |
| 616 | cconvert->pub.color_convert = jsimd_c_null_convert; |
| 617 | else |
| 618 | #endif |
| 619 | cconvert->pub.color_convert = null_convert; |
| 620 | } else if (cinfo->in_color_space == JCS_RGB || |
| 621 | cinfo->in_color_space == JCS_EXT_RGB || |
| 622 | cinfo->in_color_space == JCS_EXT_RGBX || |
| 623 | cinfo->in_color_space == JCS_EXT_BGR || |
| 624 | cinfo->in_color_space == JCS_EXT_BGRX || |
| 625 | cinfo->in_color_space == JCS_EXT_XBGR || |
| 626 | cinfo->in_color_space == JCS_EXT_XRGB || |
| 627 | cinfo->in_color_space == JCS_EXT_RGBA || |
| 628 | cinfo->in_color_space == JCS_EXT_BGRA || |
| 629 | cinfo->in_color_space == JCS_EXT_ABGR || |
| 630 | cinfo->in_color_space == JCS_EXT_ARGB) |
DRC | a9b646c | 2012-03-11 22:06:54 +0000 | [diff] [blame] | 631 | cconvert->pub.color_convert = rgb_rgb_convert; |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 632 | else |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 633 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 634 | break; |
| 635 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 636 | case JCS_YCbCr: |
| 637 | if (cinfo->num_components != 3) |
| 638 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 639 | if (cinfo->in_color_space == JCS_RGB || |
| 640 | cinfo->in_color_space == JCS_EXT_RGB || |
| 641 | cinfo->in_color_space == JCS_EXT_RGBX || |
| 642 | cinfo->in_color_space == JCS_EXT_BGR || |
| 643 | cinfo->in_color_space == JCS_EXT_BGRX || |
| 644 | cinfo->in_color_space == JCS_EXT_XBGR || |
DRC | 67ce3b2 | 2011-12-19 02:21:03 +0000 | [diff] [blame] | 645 | cinfo->in_color_space == JCS_EXT_XRGB || |
| 646 | cinfo->in_color_space == JCS_EXT_RGBA || |
| 647 | cinfo->in_color_space == JCS_EXT_BGRA || |
| 648 | cinfo->in_color_space == JCS_EXT_ABGR || |
| 649 | cinfo->in_color_space == JCS_EXT_ARGB) { |
Pierre Ossman | 59a3938 | 2009-03-09 13:15:56 +0000 | [diff] [blame] | 650 | if (jsimd_can_rgb_ycc()) |
| 651 | cconvert->pub.color_convert = jsimd_rgb_ycc_convert; |
| 652 | else { |
| 653 | cconvert->pub.start_pass = rgb_ycc_start; |
| 654 | cconvert->pub.color_convert = rgb_ycc_convert; |
| 655 | } |
DRC | 1b3fd7e | 2014-05-15 18:26:01 +0000 | [diff] [blame] | 656 | } else if (cinfo->in_color_space == JCS_YCbCr) { |
| 657 | #if defined(__mips__) |
| 658 | if (jsimd_c_can_null_convert()) |
| 659 | cconvert->pub.color_convert = jsimd_c_null_convert; |
| 660 | else |
| 661 | #endif |
| 662 | cconvert->pub.color_convert = null_convert; |
| 663 | } else |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 664 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
| 665 | break; |
| 666 | |
| 667 | case JCS_CMYK: |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 668 | if (cinfo->num_components != 4) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 669 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
DRC | 1b3fd7e | 2014-05-15 18:26:01 +0000 | [diff] [blame] | 670 | if (cinfo->in_color_space == JCS_CMYK) { |
| 671 | #if defined(__mips__) |
| 672 | if (jsimd_c_can_null_convert()) |
| 673 | cconvert->pub.color_convert = jsimd_c_null_convert; |
| 674 | else |
| 675 | #endif |
| 676 | cconvert->pub.color_convert = null_convert; |
| 677 | } else |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 678 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 679 | break; |
| 680 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 681 | case JCS_YCCK: |
| 682 | if (cinfo->num_components != 4) |
| 683 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
| 684 | if (cinfo->in_color_space == JCS_CMYK) { |
| 685 | cconvert->pub.start_pass = rgb_ycc_start; |
| 686 | cconvert->pub.color_convert = cmyk_ycck_convert; |
DRC | 1b3fd7e | 2014-05-15 18:26:01 +0000 | [diff] [blame] | 687 | } else if (cinfo->in_color_space == JCS_YCCK) { |
| 688 | #if defined(__mips__) |
| 689 | if (jsimd_c_can_null_convert()) |
| 690 | cconvert->pub.color_convert = jsimd_c_null_convert; |
| 691 | else |
| 692 | #endif |
| 693 | cconvert->pub.color_convert = null_convert; |
| 694 | } else |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 695 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
| 696 | break; |
| 697 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 698 | default: /* allow null conversion of JCS_UNKNOWN */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 699 | if (cinfo->jpeg_color_space != cinfo->in_color_space || |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 700 | cinfo->num_components != cinfo->input_components) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 701 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
DRC | 1b3fd7e | 2014-05-15 18:26:01 +0000 | [diff] [blame] | 702 | #if defined(__mips__) |
| 703 | if (jsimd_c_can_null_convert()) |
| 704 | cconvert->pub.color_convert = jsimd_c_null_convert; |
| 705 | else |
| 706 | #endif |
| 707 | cconvert->pub.color_convert = null_convert; |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 708 | break; |
| 709 | } |
Thomas G. Lane | 2cbeb8a | 1991-10-07 00:00:00 +0000 | [diff] [blame] | 710 | } |