hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * jdcolor.c |
| 3 | * |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 4 | * This file was part of the Independent JPEG Group's software: |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 5 | * Copyright (C) 1991-1997, Thomas G. Lane. |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 6 | * Modified 2011 by Guido Vollbeding. |
| 7 | * libjpeg-turbo Modifications: |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 8 | * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 9 | * Copyright (C) 2009, 2011-2012, 2014-2015, D. R. Commander. |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 10 | * Copyright (C) 2013, Linaro Limited. |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 11 | * For conditions of distribution and use, see the accompanying README.ijg |
| 12 | * file. |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 13 | * |
| 14 | * This file contains output colorspace conversion routines. |
| 15 | */ |
| 16 | |
| 17 | #define JPEG_INTERNALS |
| 18 | #include "jinclude.h" |
| 19 | #include "jpeglib.h" |
| 20 | #include "jsimd.h" |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 21 | #include "jconfigint.h" |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 22 | |
| 23 | |
| 24 | /* Private subobject */ |
| 25 | |
| 26 | typedef struct { |
| 27 | struct jpeg_color_deconverter pub; /* public fields */ |
| 28 | |
| 29 | /* Private state for YCC->RGB conversion */ |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 30 | int *Cr_r_tab; /* => table for Cr to R conversion */ |
| 31 | int *Cb_b_tab; /* => table for Cb to B conversion */ |
| 32 | JLONG *Cr_g_tab; /* => table for Cr to G conversion */ |
| 33 | JLONG *Cb_g_tab; /* => table for Cb to G conversion */ |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 34 | |
| 35 | /* Private state for RGB->Y conversion */ |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 36 | JLONG *rgb_y_tab; /* => table for RGB to Y conversion */ |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 37 | } my_color_deconverter; |
| 38 | |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 39 | typedef my_color_deconverter *my_cconvert_ptr; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 40 | |
| 41 | |
| 42 | /**************** YCbCr -> RGB conversion: most common case **************/ |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 43 | /**************** RGB -> Y conversion: less common case **************/ |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 44 | |
| 45 | /* |
| 46 | * YCbCr is defined per CCIR 601-1, except that Cb and Cr are |
| 47 | * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. |
| 48 | * The conversion equations to be implemented are therefore |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 49 | * |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 50 | * R = Y + 1.40200 * Cr |
| 51 | * G = Y - 0.34414 * Cb - 0.71414 * Cr |
| 52 | * B = Y + 1.77200 * Cb |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 53 | * |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 54 | * Y = 0.29900 * R + 0.58700 * G + 0.11400 * B |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 55 | * |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 56 | * where Cb and Cr represent the incoming values less CENTERJSAMPLE. |
| 57 | * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.) |
| 58 | * |
| 59 | * To avoid floating-point arithmetic, we represent the fractional constants |
| 60 | * as integers scaled up by 2^16 (about 4 digits precision); we have to divide |
| 61 | * the products by 2^16, with appropriate rounding, to get the correct answer. |
| 62 | * Notice that Y, being an integral input, does not contribute any fraction |
| 63 | * so it need not participate in the rounding. |
| 64 | * |
| 65 | * For even more speed, we avoid doing any multiplications in the inner loop |
| 66 | * by precalculating the constants times Cb and Cr for all possible values. |
| 67 | * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table); |
| 68 | * for 12-bit samples it is still acceptable. It's not very reasonable for |
| 69 | * 16-bit samples, but if you want lossless storage you shouldn't be changing |
| 70 | * colorspace anyway. |
| 71 | * The Cr=>R and Cb=>B values can be rounded to integers in advance; the |
| 72 | * values for the G calculation are left scaled up, since we must add them |
| 73 | * together before rounding. |
| 74 | */ |
| 75 | |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 76 | #define SCALEBITS 16 /* speediest right-shift on some machines */ |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 77 | #define ONE_HALF ((JLONG)1 << (SCALEBITS - 1)) |
| 78 | #define FIX(x) ((JLONG)((x) * (1L << SCALEBITS) + 0.5)) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 79 | |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 80 | /* We allocate one big table for RGB->Y conversion and divide it up into |
| 81 | * three parts, instead of doing three alloc_small requests. This lets us |
| 82 | * use a single table base address, which can be held in a register in the |
| 83 | * inner loops on many machines (more than can hold all three addresses, |
| 84 | * anyway). |
| 85 | */ |
| 86 | |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 87 | #define R_Y_OFF 0 /* offset to R => Y section */ |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 88 | #define G_Y_OFF (1 * (MAXJSAMPLE + 1)) /* offset to G => Y section */ |
| 89 | #define B_Y_OFF (2 * (MAXJSAMPLE + 1)) /* etc. */ |
| 90 | #define TABLE_SIZE (3 * (MAXJSAMPLE + 1)) |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 91 | |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 92 | |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 93 | /* Include inline routines for colorspace extensions */ |
| 94 | |
| 95 | #include "jdcolext.c" |
| 96 | #undef RGB_RED |
| 97 | #undef RGB_GREEN |
| 98 | #undef RGB_BLUE |
| 99 | #undef RGB_PIXELSIZE |
| 100 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 101 | #define RGB_RED EXT_RGB_RED |
| 102 | #define RGB_GREEN EXT_RGB_GREEN |
| 103 | #define RGB_BLUE EXT_RGB_BLUE |
| 104 | #define RGB_PIXELSIZE EXT_RGB_PIXELSIZE |
| 105 | #define ycc_rgb_convert_internal ycc_extrgb_convert_internal |
| 106 | #define gray_rgb_convert_internal gray_extrgb_convert_internal |
| 107 | #define rgb_rgb_convert_internal rgb_extrgb_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 108 | #include "jdcolext.c" |
| 109 | #undef RGB_RED |
| 110 | #undef RGB_GREEN |
| 111 | #undef RGB_BLUE |
| 112 | #undef RGB_PIXELSIZE |
| 113 | #undef ycc_rgb_convert_internal |
| 114 | #undef gray_rgb_convert_internal |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 115 | #undef rgb_rgb_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 116 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 117 | #define RGB_RED EXT_RGBX_RED |
| 118 | #define RGB_GREEN EXT_RGBX_GREEN |
| 119 | #define RGB_BLUE EXT_RGBX_BLUE |
| 120 | #define RGB_ALPHA 3 |
| 121 | #define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE |
| 122 | #define ycc_rgb_convert_internal ycc_extrgbx_convert_internal |
| 123 | #define gray_rgb_convert_internal gray_extrgbx_convert_internal |
| 124 | #define rgb_rgb_convert_internal rgb_extrgbx_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 125 | #include "jdcolext.c" |
| 126 | #undef RGB_RED |
| 127 | #undef RGB_GREEN |
| 128 | #undef RGB_BLUE |
| 129 | #undef RGB_ALPHA |
| 130 | #undef RGB_PIXELSIZE |
| 131 | #undef ycc_rgb_convert_internal |
| 132 | #undef gray_rgb_convert_internal |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 133 | #undef rgb_rgb_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 134 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 135 | #define RGB_RED EXT_BGR_RED |
| 136 | #define RGB_GREEN EXT_BGR_GREEN |
| 137 | #define RGB_BLUE EXT_BGR_BLUE |
| 138 | #define RGB_PIXELSIZE EXT_BGR_PIXELSIZE |
| 139 | #define ycc_rgb_convert_internal ycc_extbgr_convert_internal |
| 140 | #define gray_rgb_convert_internal gray_extbgr_convert_internal |
| 141 | #define rgb_rgb_convert_internal rgb_extbgr_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 142 | #include "jdcolext.c" |
| 143 | #undef RGB_RED |
| 144 | #undef RGB_GREEN |
| 145 | #undef RGB_BLUE |
| 146 | #undef RGB_PIXELSIZE |
| 147 | #undef ycc_rgb_convert_internal |
| 148 | #undef gray_rgb_convert_internal |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 149 | #undef rgb_rgb_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 150 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 151 | #define RGB_RED EXT_BGRX_RED |
| 152 | #define RGB_GREEN EXT_BGRX_GREEN |
| 153 | #define RGB_BLUE EXT_BGRX_BLUE |
| 154 | #define RGB_ALPHA 3 |
| 155 | #define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE |
| 156 | #define ycc_rgb_convert_internal ycc_extbgrx_convert_internal |
| 157 | #define gray_rgb_convert_internal gray_extbgrx_convert_internal |
| 158 | #define rgb_rgb_convert_internal rgb_extbgrx_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 159 | #include "jdcolext.c" |
| 160 | #undef RGB_RED |
| 161 | #undef RGB_GREEN |
| 162 | #undef RGB_BLUE |
| 163 | #undef RGB_ALPHA |
| 164 | #undef RGB_PIXELSIZE |
| 165 | #undef ycc_rgb_convert_internal |
| 166 | #undef gray_rgb_convert_internal |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 167 | #undef rgb_rgb_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 168 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 169 | #define RGB_RED EXT_XBGR_RED |
| 170 | #define RGB_GREEN EXT_XBGR_GREEN |
| 171 | #define RGB_BLUE EXT_XBGR_BLUE |
| 172 | #define RGB_ALPHA 0 |
| 173 | #define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE |
| 174 | #define ycc_rgb_convert_internal ycc_extxbgr_convert_internal |
| 175 | #define gray_rgb_convert_internal gray_extxbgr_convert_internal |
| 176 | #define rgb_rgb_convert_internal rgb_extxbgr_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 177 | #include "jdcolext.c" |
| 178 | #undef RGB_RED |
| 179 | #undef RGB_GREEN |
| 180 | #undef RGB_BLUE |
| 181 | #undef RGB_ALPHA |
| 182 | #undef RGB_PIXELSIZE |
| 183 | #undef ycc_rgb_convert_internal |
| 184 | #undef gray_rgb_convert_internal |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 185 | #undef rgb_rgb_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 186 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 187 | #define RGB_RED EXT_XRGB_RED |
| 188 | #define RGB_GREEN EXT_XRGB_GREEN |
| 189 | #define RGB_BLUE EXT_XRGB_BLUE |
| 190 | #define RGB_ALPHA 0 |
| 191 | #define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE |
| 192 | #define ycc_rgb_convert_internal ycc_extxrgb_convert_internal |
| 193 | #define gray_rgb_convert_internal gray_extxrgb_convert_internal |
| 194 | #define rgb_rgb_convert_internal rgb_extxrgb_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 195 | #include "jdcolext.c" |
| 196 | #undef RGB_RED |
| 197 | #undef RGB_GREEN |
| 198 | #undef RGB_BLUE |
| 199 | #undef RGB_ALPHA |
| 200 | #undef RGB_PIXELSIZE |
| 201 | #undef ycc_rgb_convert_internal |
| 202 | #undef gray_rgb_convert_internal |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 203 | #undef rgb_rgb_convert_internal |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 204 | |
| 205 | |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 206 | /* |
| 207 | * Initialize tables for YCC->RGB colorspace conversion. |
| 208 | */ |
| 209 | |
| 210 | LOCAL(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 211 | build_ycc_rgb_table(j_decompress_ptr cinfo) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 212 | { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 213 | my_cconvert_ptr cconvert = (my_cconvert_ptr)cinfo->cconvert; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 214 | int i; |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 215 | JLONG x; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 216 | SHIFT_TEMPS |
| 217 | |
| 218 | cconvert->Cr_r_tab = (int *) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 219 | (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, |
| 220 | (MAXJSAMPLE + 1) * sizeof(int)); |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 221 | cconvert->Cb_b_tab = (int *) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 222 | (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, |
| 223 | (MAXJSAMPLE + 1) * sizeof(int)); |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 224 | cconvert->Cr_g_tab = (JLONG *) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 225 | (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, |
| 226 | (MAXJSAMPLE + 1) * sizeof(JLONG)); |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 227 | cconvert->Cb_g_tab = (JLONG *) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 228 | (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, |
| 229 | (MAXJSAMPLE + 1) * sizeof(JLONG)); |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 230 | |
| 231 | for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { |
| 232 | /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ |
| 233 | /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ |
| 234 | /* Cr=>R value is nearest int to 1.40200 * x */ |
| 235 | cconvert->Cr_r_tab[i] = (int) |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 236 | RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS); |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 237 | /* Cb=>B value is nearest int to 1.77200 * x */ |
| 238 | cconvert->Cb_b_tab[i] = (int) |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 239 | RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS); |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 240 | /* Cr=>G value is scaled-up -0.71414 * x */ |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 241 | cconvert->Cr_g_tab[i] = (-FIX(0.71414)) * x; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 242 | /* Cb=>G value is scaled-up -0.34414 * x */ |
| 243 | /* We also add in ONE_HALF so that need not do it in inner loop */ |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 244 | cconvert->Cb_g_tab[i] = (-FIX(0.34414)) * x + ONE_HALF; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 245 | } |
| 246 | } |
| 247 | |
| 248 | |
| 249 | /* |
| 250 | * Convert some rows of samples to the output colorspace. |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 251 | */ |
| 252 | |
| 253 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 254 | ycc_rgb_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 255 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 256 | { |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 257 | switch (cinfo->out_color_space) { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 258 | case JCS_EXT_RGB: |
| 259 | ycc_extrgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 260 | num_rows); |
| 261 | break; |
| 262 | case JCS_EXT_RGBX: |
| 263 | case JCS_EXT_RGBA: |
| 264 | ycc_extrgbx_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 265 | num_rows); |
| 266 | break; |
| 267 | case JCS_EXT_BGR: |
| 268 | ycc_extbgr_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 269 | num_rows); |
| 270 | break; |
| 271 | case JCS_EXT_BGRX: |
| 272 | case JCS_EXT_BGRA: |
| 273 | ycc_extbgrx_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 274 | num_rows); |
| 275 | break; |
| 276 | case JCS_EXT_XBGR: |
| 277 | case JCS_EXT_ABGR: |
| 278 | ycc_extxbgr_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 279 | num_rows); |
| 280 | break; |
| 281 | case JCS_EXT_XRGB: |
| 282 | case JCS_EXT_ARGB: |
| 283 | ycc_extxrgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 284 | num_rows); |
| 285 | break; |
| 286 | default: |
| 287 | ycc_rgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 288 | num_rows); |
| 289 | break; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 290 | } |
| 291 | } |
| 292 | |
| 293 | |
| 294 | /**************** Cases other than YCbCr -> RGB **************/ |
| 295 | |
| 296 | |
| 297 | /* |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 298 | * Initialize for RGB->grayscale colorspace conversion. |
| 299 | */ |
| 300 | |
| 301 | LOCAL(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 302 | build_rgb_y_table(j_decompress_ptr cinfo) |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 303 | { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 304 | my_cconvert_ptr cconvert = (my_cconvert_ptr)cinfo->cconvert; |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 305 | JLONG *rgb_y_tab; |
| 306 | JLONG i; |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 307 | |
| 308 | /* Allocate and fill in the conversion tables. */ |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 309 | cconvert->rgb_y_tab = rgb_y_tab = (JLONG *) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 310 | (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 311 | (TABLE_SIZE * sizeof(JLONG))); |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 312 | |
| 313 | for (i = 0; i <= MAXJSAMPLE; i++) { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 314 | rgb_y_tab[i + R_Y_OFF] = FIX(0.29900) * i; |
| 315 | rgb_y_tab[i + G_Y_OFF] = FIX(0.58700) * i; |
| 316 | rgb_y_tab[i + B_Y_OFF] = FIX(0.11400) * i + ONE_HALF; |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 317 | } |
| 318 | } |
| 319 | |
| 320 | |
| 321 | /* |
| 322 | * Convert RGB to grayscale. |
| 323 | */ |
| 324 | |
| 325 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 326 | rgb_gray_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 327 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 328 | { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 329 | my_cconvert_ptr cconvert = (my_cconvert_ptr)cinfo->cconvert; |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 330 | register int r, g, b; |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 331 | register JLONG *ctab = cconvert->rgb_y_tab; |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 332 | register JSAMPROW outptr; |
| 333 | register JSAMPROW inptr0, inptr1, inptr2; |
| 334 | register JDIMENSION col; |
| 335 | JDIMENSION num_cols = cinfo->output_width; |
| 336 | |
| 337 | while (--num_rows >= 0) { |
| 338 | inptr0 = input_buf[0][input_row]; |
| 339 | inptr1 = input_buf[1][input_row]; |
| 340 | inptr2 = input_buf[2][input_row]; |
| 341 | input_row++; |
| 342 | outptr = *output_buf++; |
| 343 | for (col = 0; col < num_cols; col++) { |
Jonathan Wright | bbb8282 | 2020-11-25 13:36:43 +0000 | [diff] [blame] | 344 | r = inptr0[col]; |
| 345 | g = inptr1[col]; |
| 346 | b = inptr2[col]; |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 347 | /* Y */ |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 348 | outptr[col] = (JSAMPLE)((ctab[r + R_Y_OFF] + ctab[g + G_Y_OFF] + |
| 349 | ctab[b + B_Y_OFF]) >> SCALEBITS); |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 350 | } |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | |
| 355 | /* |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 356 | * Color conversion for no colorspace change: just copy the data, |
| 357 | * converting from separate-planes to interleaved representation. |
| 358 | */ |
| 359 | |
| 360 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 361 | null_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 362 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 363 | { |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 364 | register JSAMPROW inptr, inptr0, inptr1, inptr2, inptr3, outptr; |
| 365 | register JDIMENSION col; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 366 | register int num_components = cinfo->num_components; |
| 367 | JDIMENSION num_cols = cinfo->output_width; |
| 368 | int ci; |
| 369 | |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 370 | if (num_components == 3) { |
| 371 | while (--num_rows >= 0) { |
| 372 | inptr0 = input_buf[0][input_row]; |
| 373 | inptr1 = input_buf[1][input_row]; |
| 374 | inptr2 = input_buf[2][input_row]; |
| 375 | input_row++; |
| 376 | outptr = *output_buf++; |
| 377 | for (col = 0; col < num_cols; col++) { |
| 378 | *outptr++ = inptr0[col]; |
| 379 | *outptr++ = inptr1[col]; |
| 380 | *outptr++ = inptr2[col]; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 381 | } |
| 382 | } |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 383 | } else if (num_components == 4) { |
| 384 | while (--num_rows >= 0) { |
| 385 | inptr0 = input_buf[0][input_row]; |
| 386 | inptr1 = input_buf[1][input_row]; |
| 387 | inptr2 = input_buf[2][input_row]; |
| 388 | inptr3 = input_buf[3][input_row]; |
| 389 | input_row++; |
| 390 | outptr = *output_buf++; |
| 391 | for (col = 0; col < num_cols; col++) { |
| 392 | *outptr++ = inptr0[col]; |
| 393 | *outptr++ = inptr1[col]; |
| 394 | *outptr++ = inptr2[col]; |
| 395 | *outptr++ = inptr3[col]; |
| 396 | } |
| 397 | } |
| 398 | } else { |
| 399 | while (--num_rows >= 0) { |
| 400 | for (ci = 0; ci < num_components; ci++) { |
| 401 | inptr = input_buf[ci][input_row]; |
| 402 | outptr = *output_buf; |
| 403 | for (col = 0; col < num_cols; col++) { |
| 404 | outptr[ci] = inptr[col]; |
| 405 | outptr += num_components; |
| 406 | } |
| 407 | } |
| 408 | output_buf++; |
| 409 | input_row++; |
| 410 | } |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 411 | } |
| 412 | } |
| 413 | |
| 414 | |
| 415 | /* |
| 416 | * Color conversion for grayscale: just copy the data. |
| 417 | * This also works for YCbCr -> grayscale conversion, in which |
| 418 | * we just copy the Y (luminance) component and ignore chrominance. |
| 419 | */ |
| 420 | |
| 421 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 422 | grayscale_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 423 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 424 | { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 425 | jcopy_sample_rows(input_buf[0], (int)input_row, output_buf, 0, num_rows, |
| 426 | cinfo->output_width); |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | |
| 430 | /* |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 431 | * Convert grayscale to RGB |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 432 | */ |
| 433 | |
| 434 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 435 | gray_rgb_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 436 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 437 | { |
hbono@chromium.org | c6beb74 | 2011-11-29 05:16:26 +0000 | [diff] [blame] | 438 | switch (cinfo->out_color_space) { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 439 | case JCS_EXT_RGB: |
| 440 | gray_extrgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 441 | num_rows); |
| 442 | break; |
| 443 | case JCS_EXT_RGBX: |
| 444 | case JCS_EXT_RGBA: |
| 445 | gray_extrgbx_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 446 | num_rows); |
| 447 | break; |
| 448 | case JCS_EXT_BGR: |
| 449 | gray_extbgr_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 450 | num_rows); |
| 451 | break; |
| 452 | case JCS_EXT_BGRX: |
| 453 | case JCS_EXT_BGRA: |
| 454 | gray_extbgrx_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 455 | num_rows); |
| 456 | break; |
| 457 | case JCS_EXT_XBGR: |
| 458 | case JCS_EXT_ABGR: |
| 459 | gray_extxbgr_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 460 | num_rows); |
| 461 | break; |
| 462 | case JCS_EXT_XRGB: |
| 463 | case JCS_EXT_ARGB: |
| 464 | gray_extxrgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 465 | num_rows); |
| 466 | break; |
| 467 | default: |
| 468 | gray_rgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 469 | num_rows); |
| 470 | break; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 471 | } |
| 472 | } |
| 473 | |
| 474 | |
| 475 | /* |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 476 | * Convert plain RGB to extended RGB |
| 477 | */ |
| 478 | |
| 479 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 480 | rgb_rgb_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 481 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 482 | { |
| 483 | switch (cinfo->out_color_space) { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 484 | case JCS_EXT_RGB: |
| 485 | rgb_extrgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 486 | num_rows); |
| 487 | break; |
| 488 | case JCS_EXT_RGBX: |
| 489 | case JCS_EXT_RGBA: |
| 490 | rgb_extrgbx_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 491 | num_rows); |
| 492 | break; |
| 493 | case JCS_EXT_BGR: |
| 494 | rgb_extbgr_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 495 | num_rows); |
| 496 | break; |
| 497 | case JCS_EXT_BGRX: |
| 498 | case JCS_EXT_BGRA: |
| 499 | rgb_extbgrx_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 500 | num_rows); |
| 501 | break; |
| 502 | case JCS_EXT_XBGR: |
| 503 | case JCS_EXT_ABGR: |
| 504 | rgb_extxbgr_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 505 | num_rows); |
| 506 | break; |
| 507 | case JCS_EXT_XRGB: |
| 508 | case JCS_EXT_ARGB: |
| 509 | rgb_extxrgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 510 | num_rows); |
| 511 | break; |
| 512 | default: |
| 513 | rgb_rgb_convert_internal(cinfo, input_buf, input_row, output_buf, |
| 514 | num_rows); |
| 515 | break; |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 516 | } |
| 517 | } |
| 518 | |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 519 | |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 520 | /* |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 521 | * Adobe-style YCCK->CMYK conversion. |
| 522 | * We convert YCbCr to R=1-C, G=1-M, and B=1-Y using the same |
| 523 | * conversion as above, while passing K (black) unchanged. |
| 524 | * We assume build_ycc_rgb_table has been called. |
| 525 | */ |
| 526 | |
| 527 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 528 | ycck_cmyk_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 529 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 530 | { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 531 | my_cconvert_ptr cconvert = (my_cconvert_ptr)cinfo->cconvert; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 532 | register int y, cb, cr; |
| 533 | register JSAMPROW outptr; |
| 534 | register JSAMPROW inptr0, inptr1, inptr2, inptr3; |
| 535 | register JDIMENSION col; |
| 536 | JDIMENSION num_cols = cinfo->output_width; |
| 537 | /* copy these pointers into registers if possible */ |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 538 | register JSAMPLE *range_limit = cinfo->sample_range_limit; |
| 539 | register int *Crrtab = cconvert->Cr_r_tab; |
| 540 | register int *Cbbtab = cconvert->Cb_b_tab; |
| 541 | register JLONG *Crgtab = cconvert->Cr_g_tab; |
| 542 | register JLONG *Cbgtab = cconvert->Cb_g_tab; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 543 | SHIFT_TEMPS |
| 544 | |
| 545 | while (--num_rows >= 0) { |
| 546 | inptr0 = input_buf[0][input_row]; |
| 547 | inptr1 = input_buf[1][input_row]; |
| 548 | inptr2 = input_buf[2][input_row]; |
| 549 | inptr3 = input_buf[3][input_row]; |
| 550 | input_row++; |
| 551 | outptr = *output_buf++; |
| 552 | for (col = 0; col < num_cols; col++) { |
Jonathan Wright | bbb8282 | 2020-11-25 13:36:43 +0000 | [diff] [blame] | 553 | y = inptr0[col]; |
| 554 | cb = inptr1[col]; |
| 555 | cr = inptr2[col]; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 556 | /* Range-limiting is essential due to noise introduced by DCT losses. */ |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 557 | outptr[0] = range_limit[MAXJSAMPLE - (y + Crrtab[cr])]; /* red */ |
| 558 | outptr[1] = range_limit[MAXJSAMPLE - (y + /* green */ |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 559 | ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 560 | SCALEBITS)))]; |
| 561 | outptr[2] = range_limit[MAXJSAMPLE - (y + Cbbtab[cb])]; /* blue */ |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 562 | /* K passes through unchanged */ |
Jonathan Wright | bbb8282 | 2020-11-25 13:36:43 +0000 | [diff] [blame] | 563 | outptr[3] = inptr3[col]; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 564 | outptr += 4; |
| 565 | } |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | |
| 570 | /* |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 571 | * RGB565 conversion |
| 572 | */ |
| 573 | |
Jonathan Wright | bbb8282 | 2020-11-25 13:36:43 +0000 | [diff] [blame] | 574 | #define PACK_SHORT_565_LE(r, g, b) \ |
| 575 | ((((r) << 8) & 0xF800) | (((g) << 3) & 0x7E0) | ((b) >> 3)) |
| 576 | #define PACK_SHORT_565_BE(r, g, b) \ |
| 577 | (((r) & 0xF8) | ((g) >> 5) | (((g) << 11) & 0xE000) | (((b) << 5) & 0x1F00)) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 578 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 579 | #define PACK_TWO_PIXELS_LE(l, r) ((r << 16) | l) |
| 580 | #define PACK_TWO_PIXELS_BE(l, r) ((l << 16) | r) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 581 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 582 | #define PACK_NEED_ALIGNMENT(ptr) (((size_t)(ptr)) & 3) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 583 | |
| 584 | #define WRITE_TWO_ALIGNED_PIXELS(addr, pixels) ((*(int *)(addr)) = pixels) |
| 585 | |
| 586 | #define DITHER_565_R(r, dither) ((r) + ((dither) & 0xFF)) |
| 587 | #define DITHER_565_G(g, dither) ((g) + (((dither) & 0xFF) >> 1)) |
| 588 | #define DITHER_565_B(b, dither) ((b) + ((dither) & 0xFF)) |
| 589 | |
| 590 | |
| 591 | /* Declarations for ordered dithering |
| 592 | * |
| 593 | * We use a 4x4 ordered dither array packed into 32 bits. This array is |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 594 | * sufficient for dithering RGB888 to RGB565. |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 595 | */ |
| 596 | |
| 597 | #define DITHER_MASK 0x3 |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 598 | #define DITHER_ROTATE(x) ((((x) & 0xFF) << 24) | (((x) >> 8) & 0x00FFFFFF)) |
| 599 | static const JLONG dither_matrix[4] = { |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 600 | 0x0008020A, |
| 601 | 0x0C040E06, |
| 602 | 0x030B0109, |
| 603 | 0x0F070D05 |
| 604 | }; |
| 605 | |
| 606 | |
| 607 | static INLINE boolean is_big_endian(void) |
| 608 | { |
| 609 | int test_value = 1; |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 610 | if (*(char *)&test_value != 1) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 611 | return TRUE; |
| 612 | return FALSE; |
| 613 | } |
| 614 | |
| 615 | |
| 616 | /* Include inline routines for RGB565 conversion */ |
| 617 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 618 | #define PACK_SHORT_565 PACK_SHORT_565_LE |
| 619 | #define PACK_TWO_PIXELS PACK_TWO_PIXELS_LE |
| 620 | #define ycc_rgb565_convert_internal ycc_rgb565_convert_le |
| 621 | #define ycc_rgb565D_convert_internal ycc_rgb565D_convert_le |
| 622 | #define rgb_rgb565_convert_internal rgb_rgb565_convert_le |
| 623 | #define rgb_rgb565D_convert_internal rgb_rgb565D_convert_le |
| 624 | #define gray_rgb565_convert_internal gray_rgb565_convert_le |
| 625 | #define gray_rgb565D_convert_internal gray_rgb565D_convert_le |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 626 | #include "jdcol565.c" |
| 627 | #undef PACK_SHORT_565 |
| 628 | #undef PACK_TWO_PIXELS |
| 629 | #undef ycc_rgb565_convert_internal |
| 630 | #undef ycc_rgb565D_convert_internal |
| 631 | #undef rgb_rgb565_convert_internal |
| 632 | #undef rgb_rgb565D_convert_internal |
| 633 | #undef gray_rgb565_convert_internal |
| 634 | #undef gray_rgb565D_convert_internal |
| 635 | |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 636 | #define PACK_SHORT_565 PACK_SHORT_565_BE |
| 637 | #define PACK_TWO_PIXELS PACK_TWO_PIXELS_BE |
| 638 | #define ycc_rgb565_convert_internal ycc_rgb565_convert_be |
| 639 | #define ycc_rgb565D_convert_internal ycc_rgb565D_convert_be |
| 640 | #define rgb_rgb565_convert_internal rgb_rgb565_convert_be |
| 641 | #define rgb_rgb565D_convert_internal rgb_rgb565D_convert_be |
| 642 | #define gray_rgb565_convert_internal gray_rgb565_convert_be |
| 643 | #define gray_rgb565D_convert_internal gray_rgb565D_convert_be |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 644 | #include "jdcol565.c" |
| 645 | #undef PACK_SHORT_565 |
| 646 | #undef PACK_TWO_PIXELS |
| 647 | #undef ycc_rgb565_convert_internal |
| 648 | #undef ycc_rgb565D_convert_internal |
| 649 | #undef rgb_rgb565_convert_internal |
| 650 | #undef rgb_rgb565D_convert_internal |
| 651 | #undef gray_rgb565_convert_internal |
| 652 | #undef gray_rgb565D_convert_internal |
| 653 | |
| 654 | |
| 655 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 656 | ycc_rgb565_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 657 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 658 | { |
| 659 | if (is_big_endian()) |
| 660 | ycc_rgb565_convert_be(cinfo, input_buf, input_row, output_buf, num_rows); |
| 661 | else |
| 662 | ycc_rgb565_convert_le(cinfo, input_buf, input_row, output_buf, num_rows); |
| 663 | } |
| 664 | |
| 665 | |
| 666 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 667 | ycc_rgb565D_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 668 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 669 | { |
| 670 | if (is_big_endian()) |
| 671 | ycc_rgb565D_convert_be(cinfo, input_buf, input_row, output_buf, num_rows); |
| 672 | else |
| 673 | ycc_rgb565D_convert_le(cinfo, input_buf, input_row, output_buf, num_rows); |
| 674 | } |
| 675 | |
| 676 | |
| 677 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 678 | rgb_rgb565_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 679 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 680 | { |
| 681 | if (is_big_endian()) |
| 682 | rgb_rgb565_convert_be(cinfo, input_buf, input_row, output_buf, num_rows); |
| 683 | else |
| 684 | rgb_rgb565_convert_le(cinfo, input_buf, input_row, output_buf, num_rows); |
| 685 | } |
| 686 | |
| 687 | |
| 688 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 689 | rgb_rgb565D_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 690 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 691 | { |
| 692 | if (is_big_endian()) |
| 693 | rgb_rgb565D_convert_be(cinfo, input_buf, input_row, output_buf, num_rows); |
| 694 | else |
| 695 | rgb_rgb565D_convert_le(cinfo, input_buf, input_row, output_buf, num_rows); |
| 696 | } |
| 697 | |
| 698 | |
| 699 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 700 | gray_rgb565_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 701 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 702 | { |
| 703 | if (is_big_endian()) |
| 704 | gray_rgb565_convert_be(cinfo, input_buf, input_row, output_buf, num_rows); |
| 705 | else |
| 706 | gray_rgb565_convert_le(cinfo, input_buf, input_row, output_buf, num_rows); |
| 707 | } |
| 708 | |
| 709 | |
| 710 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 711 | gray_rgb565D_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, |
| 712 | JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 713 | { |
| 714 | if (is_big_endian()) |
| 715 | gray_rgb565D_convert_be(cinfo, input_buf, input_row, output_buf, num_rows); |
| 716 | else |
| 717 | gray_rgb565D_convert_le(cinfo, input_buf, input_row, output_buf, num_rows); |
| 718 | } |
| 719 | |
| 720 | |
| 721 | /* |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 722 | * Empty method for start_pass. |
| 723 | */ |
| 724 | |
| 725 | METHODDEF(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 726 | start_pass_dcolor(j_decompress_ptr cinfo) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 727 | { |
| 728 | /* no work needed */ |
| 729 | } |
| 730 | |
| 731 | |
| 732 | /* |
| 733 | * Module initialization routine for output colorspace conversion. |
| 734 | */ |
| 735 | |
| 736 | GLOBAL(void) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 737 | jinit_color_deconverter(j_decompress_ptr cinfo) |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 738 | { |
| 739 | my_cconvert_ptr cconvert; |
| 740 | int ci; |
| 741 | |
| 742 | cconvert = (my_cconvert_ptr) |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 743 | (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 744 | sizeof(my_color_deconverter)); |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 745 | cinfo->cconvert = (struct jpeg_color_deconverter *)cconvert; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 746 | cconvert->pub.start_pass = start_pass_dcolor; |
| 747 | |
| 748 | /* Make sure num_components agrees with jpeg_color_space */ |
| 749 | switch (cinfo->jpeg_color_space) { |
| 750 | case JCS_GRAYSCALE: |
| 751 | if (cinfo->num_components != 1) |
| 752 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
| 753 | break; |
| 754 | |
| 755 | case JCS_RGB: |
| 756 | case JCS_YCbCr: |
| 757 | if (cinfo->num_components != 3) |
| 758 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
| 759 | break; |
| 760 | |
| 761 | case JCS_CMYK: |
| 762 | case JCS_YCCK: |
| 763 | if (cinfo->num_components != 4) |
| 764 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
| 765 | break; |
| 766 | |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 767 | default: /* JCS_UNKNOWN can be anything */ |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 768 | if (cinfo->num_components < 1) |
| 769 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
| 770 | break; |
| 771 | } |
| 772 | |
| 773 | /* Set out_color_components and conversion method based on requested space. |
| 774 | * Also clear the component_needed flags for any unused components, |
| 775 | * so that earlier pipeline stages can avoid useless computation. |
| 776 | */ |
| 777 | |
| 778 | switch (cinfo->out_color_space) { |
| 779 | case JCS_GRAYSCALE: |
| 780 | cinfo->out_color_components = 1; |
| 781 | if (cinfo->jpeg_color_space == JCS_GRAYSCALE || |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 782 | cinfo->jpeg_color_space == JCS_YCbCr) { |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 783 | cconvert->pub.color_convert = grayscale_convert; |
| 784 | /* For color->grayscale conversion, only the Y (0) component is needed */ |
| 785 | for (ci = 1; ci < cinfo->num_components; ci++) |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 786 | cinfo->comp_info[ci].component_needed = FALSE; |
noel@chromium.org | 3395bcc | 2014-04-14 06:56:00 +0000 | [diff] [blame] | 787 | } else if (cinfo->jpeg_color_space == JCS_RGB) { |
| 788 | cconvert->pub.color_convert = rgb_gray_convert; |
| 789 | build_rgb_y_table(cinfo); |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 790 | } else |
| 791 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
| 792 | break; |
| 793 | |
| 794 | case JCS_RGB: |
| 795 | case JCS_EXT_RGB: |
| 796 | case JCS_EXT_RGBX: |
| 797 | case JCS_EXT_BGR: |
| 798 | case JCS_EXT_BGRX: |
| 799 | case JCS_EXT_XBGR: |
| 800 | case JCS_EXT_XRGB: |
hbono@chromium.org | 0ec930e | 2012-01-18 07:01:04 +0000 | [diff] [blame] | 801 | case JCS_EXT_RGBA: |
| 802 | case JCS_EXT_BGRA: |
| 803 | case JCS_EXT_ABGR: |
| 804 | case JCS_EXT_ARGB: |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 805 | cinfo->out_color_components = rgb_pixelsize[cinfo->out_color_space]; |
| 806 | if (cinfo->jpeg_color_space == JCS_YCbCr) { |
| 807 | if (jsimd_can_ycc_rgb()) |
| 808 | cconvert->pub.color_convert = jsimd_ycc_rgb_convert; |
| 809 | else { |
| 810 | cconvert->pub.color_convert = ycc_rgb_convert; |
| 811 | build_ycc_rgb_table(cinfo); |
| 812 | } |
| 813 | } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) { |
| 814 | cconvert->pub.color_convert = gray_rgb_convert; |
hbono@chromium.org | df5ffdd | 2012-05-11 07:46:03 +0000 | [diff] [blame] | 815 | } else if (cinfo->jpeg_color_space == JCS_RGB) { |
| 816 | if (rgb_red[cinfo->out_color_space] == 0 && |
| 817 | rgb_green[cinfo->out_color_space] == 1 && |
| 818 | rgb_blue[cinfo->out_color_space] == 2 && |
| 819 | rgb_pixelsize[cinfo->out_color_space] == 3) |
| 820 | cconvert->pub.color_convert = null_convert; |
| 821 | else |
| 822 | cconvert->pub.color_convert = rgb_rgb_convert; |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 823 | } else |
| 824 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
| 825 | break; |
| 826 | |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 827 | case JCS_RGB565: |
| 828 | cinfo->out_color_components = 3; |
| 829 | if (cinfo->dither_mode == JDITHER_NONE) { |
| 830 | if (cinfo->jpeg_color_space == JCS_YCbCr) { |
Chris Blume | cca8c4d | 2019-03-01 01:09:50 -0800 | [diff] [blame] | 831 | if (jsimd_can_ycc_rgb565()) |
| 832 | cconvert->pub.color_convert = jsimd_ycc_rgb565_convert; |
| 833 | else { |
| 834 | cconvert->pub.color_convert = ycc_rgb565_convert; |
| 835 | build_ycc_rgb_table(cinfo); |
Aaron Gable | feec46f | 2015-08-06 09:54:48 -0700 | [diff] [blame] | 836 | } |
| 837 | } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) { |
| 838 | cconvert->pub.color_convert = gray_rgb565_convert; |
| 839 | } else if (cinfo->jpeg_color_space == JCS_RGB) { |
| 840 | cconvert->pub.color_convert = rgb_rgb565_convert; |
| 841 | } else |
| 842 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
| 843 | } else { |
| 844 | /* only ordered dithering is supported */ |
| 845 | if (cinfo->jpeg_color_space == JCS_YCbCr) { |
| 846 | cconvert->pub.color_convert = ycc_rgb565D_convert; |
| 847 | build_ycc_rgb_table(cinfo); |
| 848 | } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) { |
| 849 | cconvert->pub.color_convert = gray_rgb565D_convert; |
| 850 | } else if (cinfo->jpeg_color_space == JCS_RGB) { |
| 851 | cconvert->pub.color_convert = rgb_rgb565D_convert; |
| 852 | } else |
| 853 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
| 854 | } |
| 855 | break; |
| 856 | |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 857 | case JCS_CMYK: |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 858 | cinfo->out_color_components = 4; |
| 859 | if (cinfo->jpeg_color_space == JCS_YCCK) { |
| 860 | cconvert->pub.color_convert = ycck_cmyk_convert; |
| 861 | build_ycc_rgb_table(cinfo); |
| 862 | } else if (cinfo->jpeg_color_space == JCS_CMYK) { |
| 863 | cconvert->pub.color_convert = null_convert; |
| 864 | } else |
| 865 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
| 866 | break; |
| 867 | |
| 868 | default: |
| 869 | /* Permit null conversion to same output space */ |
| 870 | if (cinfo->out_color_space == cinfo->jpeg_color_space) { |
| 871 | cinfo->out_color_components = cinfo->num_components; |
| 872 | cconvert->pub.color_convert = null_convert; |
Tom Hudson | 0d47d2d | 2016-05-04 13:22:56 -0400 | [diff] [blame] | 873 | } else /* unsupported non-null conversion */ |
hbono@chromium.org | f0c4f33 | 2010-11-01 05:14:55 +0000 | [diff] [blame] | 874 | ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
| 875 | break; |
| 876 | } |
| 877 | |
| 878 | if (cinfo->quantize_colors) |
| 879 | cinfo->output_components = 1; /* single colormapped output component */ |
| 880 | else |
| 881 | cinfo->output_components = cinfo->out_color_components; |
| 882 | } |