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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <assert.h>
#include <libdisplay-info/info.h>
static const char *
str_or_null(const char *str)
{
return str ? str : "{null}";
}
static const char *
yes_no(bool cond)
{
return cond ? "yes" : "no";
}
static void
print_chromaticity(const char *prefix, const struct di_chromaticity_cie1931 *c)
{
printf("%s: %.3f, %.3f\n", prefix, c->x, c->y);
}
static void
print_info(const struct di_info *info)
{
const struct di_hdr_static_metadata *hdr_static;
const struct di_color_primaries *primaries;
const struct di_supported_signal_colorimetry *ssc;
char *str;
str = di_info_get_make(info);
printf("make: %s\n", str_or_null(str));
free(str);
str = di_info_get_model(info);
printf("model: %s\n", str_or_null(str));
free(str);
str = di_info_get_serial(info);
printf("serial: %s\n", str_or_null(str));
free(str);
hdr_static = di_info_get_hdr_static_metadata(info);
assert(hdr_static);
printf("HDR static metadata:\n"
"luminance %f-%f, maxFALL %f\n"
"metadata type1=%s\n"
"EOTF tSDR=%s, tHDR=%s, PQ=%s, HLG=%s\n",
hdr_static->desired_content_min_luminance,
hdr_static->desired_content_max_luminance,
hdr_static->desired_content_max_frame_avg_luminance,
yes_no(hdr_static->type1),
yes_no(hdr_static->traditional_sdr),
yes_no(hdr_static->traditional_hdr),
yes_no(hdr_static->pq),
yes_no(hdr_static->hlg));
primaries = di_info_get_default_color_primaries(info);
assert(primaries);
printf("default color primaries:\n");
print_chromaticity(" red", &primaries->primary[0]);
print_chromaticity(" green", &primaries->primary[1]);
print_chromaticity(" blue", &primaries->primary[2]);
print_chromaticity("default white", &primaries->default_white);
printf("default gamma: %.2f\n", di_info_get_default_gamma(info));
ssc = di_info_get_supported_signal_colorimetry(info);
assert(ssc);
printf("signal colorimetry:");
if (ssc->bt2020_cycc)
printf(" BT2020_cYCC");
if (ssc->bt2020_ycc)
printf(" BT2020_YCC");
if (ssc->bt2020_rgb)
printf(" BT2020_RGB");
if (ssc->st2113_rgb)
printf(" P3D65+P3DCI");
if (ssc->ictcp)
printf(" ICtCp");
printf("\n");
}
int
main(int argc, char *argv[])
{
FILE *in;
static uint8_t raw[32 * 1024];
size_t size = 0;
struct di_info *info;
in = stdin;
if (argc > 1) {
in = fopen(argv[1], "r");
if (!in) {
perror("failed to open input file");
return 1;
}
}
while (!feof(in)) {
size += fread(&raw[size], 1, sizeof(raw) - size, in);
if (ferror(in)) {
perror("fread failed");
return 1;
} else if (size >= sizeof(raw)) {
fprintf(stderr, "input too large\n");
return 1;
}
}
fclose(in);
info = di_info_parse_edid(raw, size);
if (!info) {
perror("di_edid_parse failed");
return 1;
}
print_info(info);
di_info_destroy(info);
return 0;
}
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