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megapixels
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Code Issues Releases Wiki Activity

Added back srgb curve

This commit is contained in:
Martijn Braam 2020-12-06 16:13:18 +01:00
parent 4df62aa21e
commit b8842ae7e8
1 changed files with 28 additions and 6 deletions
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34
quickpreview.c
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@ -7,6 +7,28 @@
#include <assert.h>
#include <stdio.h>
/* Linear -> sRGB lookup table */
static const int srgb[] = {
0, 12, 21, 28, 33, 38, 42, 46, 49, 52, 55, 58, 61, 63, 66, 68, 70,
73, 75, 77, 79, 81, 82, 84, 86, 88, 89, 91, 93, 94, 96, 97, 99, 100,
102, 103, 104, 106, 107, 109, 110, 111, 112, 114, 115, 116, 117, 118,
120, 121, 122, 123, 124, 125, 126, 127, 129, 130, 131, 132, 133, 134,
135, 136, 137, 138, 139, 140, 141, 142, 142, 143, 144, 145, 146, 147,
148, 149, 150, 151, 151, 152, 153, 154, 155, 156, 157, 157, 158, 159,
160, 161, 161, 162, 163, 164, 165, 165, 166, 167, 168, 168, 169, 170,
171, 171, 172, 173, 174, 174, 175, 176, 176, 177, 178, 179, 179, 180,
181, 181, 182, 183, 183, 184, 185, 185, 186, 187, 187, 188, 189, 189,
190, 191, 191, 192, 193, 193, 194, 194, 195, 196, 196, 197, 197, 198,
199, 199, 200, 201, 201, 202, 202, 203, 204, 204, 205, 205, 206, 206,
207, 208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214, 214,
215, 215, 216, 217, 217, 218, 218, 219, 219, 220, 220, 221, 221, 222,
222, 223, 223, 224, 224, 225, 226, 226, 227, 227, 228, 228, 229, 229,
230, 230, 231, 231, 232, 232, 233, 233, 234, 234, 235, 235, 236, 236,
237, 237, 237, 238, 238, 239, 239, 240, 240, 241, 241, 242, 242, 243,
243, 244, 244, 245, 245, 245, 246, 246, 247, 247, 248, 248, 249, 249,
250, 250, 251, 251, 251, 252, 252, 253, 253, 254, 254, 255
};
static inline uint32_t
pack_rgb(uint8_t r, uint8_t g, uint8_t b)
{
@ -93,9 +115,9 @@ quick_preview_rggb8(uint32_t *dst, const uint32_t dst_width,
while (src_x < src_width) {
uint32_t src_i = src_y * src_width + src_x;
uint8_t b0 = src[src_i] - blacklevel;
uint8_t b1 = src[src_i + 1] - blacklevel;
uint8_t b2 = src[src_i + src_width + 1] - blacklevel;
uint8_t b0 = srgb[src[src_i] - blacklevel];
uint8_t b1 = srgb[src[src_i + 1] - blacklevel];
uint8_t b2 = srgb[src[src_i + src_width + 1] - blacklevel];
uint32_t color;
switch (format) {
@ -147,9 +169,9 @@ quick_preview_rggb10(uint32_t *dst, const uint32_t dst_width,
while (src_x < width_bytes) {
uint32_t src_i = src_y * width_bytes + src_x;
uint8_t b0 = src[src_i] - blacklevel;
uint8_t b1 = src[src_i + 1] - blacklevel;
uint8_t b2 = src[src_i + width_bytes + 1] - blacklevel;
uint8_t b0 = srgb[src[src_i] - blacklevel];
uint8_t b1 = srgb[src[src_i + 1] - blacklevel];
uint8_t b2 = srgb[src[src_i + width_bytes + 1] - blacklevel];
uint32_t color;
switch (format) {