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Use libdng to parse the calibration file

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This commit is contained in:
Martijn Braam
2023-11-23 00:30:14 +01:00
parent 803c7910c9
commit 7f5c7c1c4c
1 changed files with 26 additions and 6 deletions
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32
src/dcp.c
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@@ -1,7 +1,9 @@
#include "dcp.h"
#include <libdng.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
bool
@@ -15,18 +17,18 @@ find_calibration_by_model(char *conffile, char *model, const char *sensor)
}
// Check user overridden /etc/megapixels/config/%model,%sensor.dcp
sprintf(conffile,
"%s/megapixels/config/%s,%s.dcp",
"/etc",
model,
sensor);
sprintf(conffile, "%s/megapixels/config/%s,%s.dcp", "/etc", model, sensor);
if (access(conffile, F_OK) != -1) {
printf("Found calibration file at %s\n", conffile);
return true;
}
// Check packaged /usr/share/megapixels/config/%model,%sensor.ini
sprintf(conffile, "%s/megapixels/config/%s,%s.dcp", "/usr/share", model, sensor);
sprintf(conffile,
"%s/megapixels/config/%s,%s.dcp",
"/usr/share",
model,
sensor);
if (access(conffile, F_OK) != -1) {
printf("Found calibration file at %s\n", conffile);
return true;
@@ -63,3 +65,21 @@ find_calibration(char *conffile, const char *sensor)
}
}
}
struct MPCameraCalibration
parse_calibration_file(const char *path)
{
struct MPCameraCalibration result;
libdng_info temp = { 0 };
libdng_new(&temp);
libdng_load_calibration_file(&temp, path);
memcpy(result.color_matrix_1, temp.color_matrix_1, 9 * sizeof(float));
memcpy(result.color_matrix_2, temp.color_matrix_2, 9 * sizeof(float));
memcpy(result.forward_matrix_1, temp.forward_matrix_1, 9 * sizeof(float));
memcpy(result.forward_matrix_2, temp.forward_matrix_2, 9 * sizeof(float));
result.tone_curve_length = temp.tone_curve_length;
memcpy(result.tone_curve,
temp.tone_curve,
temp.tone_curve_length * sizeof(float));
return result;
}