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megapixels
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Code Issues Releases Wiki Activity

Use the proper color matrix for preview

This commit is contained in:
Martijn Braam 2020-12-06 15:22:53 +01:00
parent 7665f5d85b
commit 08520e6e6c
7 changed files with 47 additions and 36 deletions
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28
camera_config.c
View File

@ -2,6 +2,7 @@
#include "ini.h"
#include "config.h"
#include "matrix.h"
#include <wordexp.h>
#include <stdio.h>
#include <stdlib.h>
@ -227,6 +228,15 @@ config_ini_handler(void *user, const char *section, const char *name,
return 1;
}
void
calculate_matrices() {
for (size_t i = 0; i < MP_MAX_CAMERAS; ++i) {
if (cameras[i].colormatrix != NULL && cameras[i].forwardmatrix != NULL) {
multiply_matrices(cameras[i].colormatrix, cameras[i].forwardmatrix, cameras[i].previewmatrix);
}
}
}
bool mp_load_config() {
char file[512];
if (!find_config(file)) {
@ -237,14 +247,20 @@ bool mp_load_config() {
int result = ini_parse(file, config_ini_handler, NULL);
if (result == -1) {
g_printerr("Config file not found\n");
} else if (result == -2) {
return false;
}
if (result == -2) {
g_printerr("Could not allocate memory to parse config file\n");
} else if (result != 0) {
g_printerr("Could not parse config file\n");
} else {
return true;
return false;
}
return false;
if (result != 0) {
g_printerr("Could not parse config file\n");
return false;
}
calculate_matrices();
return true;
}
const char * mp_get_device_make()

1
camera_config.h
View File

@ -32,6 +32,7 @@ struct mp_camera_config {
float colormatrix[9];
float forwardmatrix[9];
float previewmatrix[9];
int blacklevel;
int whitelevel;

15
matrix.c Normal file
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@ -0,0 +1,15 @@
void
multiply_matrices(float a[9], float b[9], float out[9]) {
// zero out target matrix
for(int i=0; i<9; i++) {
out[i] = 0;
}
for(int i=0; i<3; i++) {
for(int j=0; j<3; j++) {
for(int k=0; k<3; k++) {
out[i*3+j] += a[i*3+k] * b[k*3+j];
}
}
}
}

1
matrix.h Normal file
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@ -0,0 +1 @@
void multiply_matrices(float a[9], float b[9], float out[9]);

2
meson.build
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@ -21,7 +21,7 @@ if get_option('buildtype') == 'debug'
add_global_arguments('-DDEBUG', language: 'c')
endif
executable('megapixels', 'main.c', 'ini.c', 'quickpreview.c', 'camera.c', 'device.c', 'pipeline.c', 'camera_config.c', 'io_pipeline.c', 'process_pipeline.c', resources, dependencies : [gtkdep, libm, tiff, threads], install : true)
executable('megapixels', 'main.c', 'ini.c', 'quickpreview.c', 'camera.c', 'device.c', 'pipeline.c', 'camera_config.c', 'io_pipeline.c', 'process_pipeline.c', 'matrix.c', resources, dependencies : [gtkdep, libm, tiff, threads], install : true)
install_data(['data/org.postmarketos.Megapixels.desktop'],
install_dir : get_option('datadir') / 'applications')

2
process_pipeline.c
View File

@ -158,7 +158,7 @@ process_image_for_preview(const MPImage *image)
image->pixel_format,
camera->rotate,
camera->mirrored,
camera->colormatrix[0] == 0 ? NULL : camera->colormatrix,
camera->previewmatrix[0] == 0 ? NULL : camera->previewmatrix,
camera->blacklevel,
skip);

34
quickpreview.c
View File

@ -7,28 +7,6 @@
#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)
{
return (r << 16) | (g << 8) | b;
@ -110,9 +88,9 @@ static void quick_preview_rggb8(
while (src_x < src_width) {
uint32_t src_i = src_y * src_width + src_x;
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];
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;
uint32_t color;
switch (format) {
@ -169,9 +147,9 @@ static void quick_preview_rggb10(
while (src_x < width_bytes) {
uint32_t src_i = src_y * width_bytes + src_x;
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];
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;
uint32_t color;
switch (format) {