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https://gitlab.freedesktop.org/emersion/libdisplay-info.git
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225ec04a54
While this isn't particularly interesting to print, this reduces the diff between di-edid-decode and edid-decode. This is not exposed via the low-level EDID library because callers wouldn't have a use for it. Signed-off-by: Simon Ser <contact@emersion.fr>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
#include <inttypes.h>
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#include <stdio.h>
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#include <libdisplay-info/edid.h>
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#include <libdisplay-info/info.h>
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static const char *
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ext_tag_name(enum di_edid_ext_tag tag)
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{
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static char name[256];
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switch (tag) {
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case DI_EDID_EXT_CEA:
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return "CTA-861 Extension Block";
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case DI_EDID_EXT_VTB:
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return "Video Timing Extension Block";
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case DI_EDID_EXT_DI:
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return "Display Information Extension Block";
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case DI_EDID_EXT_LS:
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return "Localized String Extension Block";
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case DI_EDID_EXT_BLOCK_MAP:
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return "Block Map Extension Block";
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case DI_EDID_EXT_VENDOR:
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return "Manufacturer-Specific Extension Block";
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default:
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snprintf(name, sizeof(name),
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"Unknown EDID Extension Block 0x%02x", tag);
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return name;
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}
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}
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static void
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print_ext(const struct di_edid_ext *ext, size_t ext_index)
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{
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const char *tag_name = ext_tag_name(di_edid_ext_get_tag(ext));
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printf("\n----------------\n\n");
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printf("Block %zu, %s:\n", ext_index + 1, tag_name);
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}
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static size_t
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edid_checksum_index(size_t block_index)
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{
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return 128 * (block_index + 1) - 1;
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}
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int
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main(void)
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{
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static uint8_t raw[32 * 1024];
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size_t size = 0;
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const struct di_edid *edid;
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struct di_info *info;
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const struct di_edid_vendor_product *vendor_product;
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const struct di_edid_ext *const *exts;
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size_t i;
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while (!feof(stdin)) {
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size += fread(&raw[size], 1, sizeof(raw) - size, stdin);
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if (ferror(stdin)) {
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perror("fread failed");
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return 1;
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}
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}
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info = di_info_parse_edid(raw, size);
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if (!info) {
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perror("di_edid_parse failed");
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return 1;
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}
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edid = di_info_get_edid(info);
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printf("Block 0, Base EDID:\n");
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printf(" EDID Structure Version & Revision: %d.%d\n",
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di_edid_get_version(edid), di_edid_get_revision(edid));
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vendor_product = di_edid_get_vendor_product(edid);
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printf(" Vendor & Product Identification:\n");
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printf(" Manufacturer: %.3s\n", vendor_product->manufacturer);
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printf(" Model: %" PRIu16 "\n", vendor_product->product);
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printf(" Serial Number: %" PRIu32 "\n", vendor_product->serial);
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if (vendor_product->model_year != 0) {
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printf(" Model year: %d\n", vendor_product->model_year);
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} else {
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printf(" Made in: week %d of %d\n",
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vendor_product->manufacture_week,
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vendor_product->manufacture_year);
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}
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exts = di_edid_get_extensions(edid);
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for (i = 0; exts[i] != NULL; i++);
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if (i > 0) {
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printf(" Extension blocks: %zu\n", i);
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}
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printf("Checksum: 0x%02hhx\n", raw[edid_checksum_index(0)]);
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for (i = 0; exts[i] != NULL; i++) {
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print_ext(exts[i], i);
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printf("Checksum: 0x%02hhx\n", raw[edid_checksum_index(i + 1)]);
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}
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di_info_destroy(info);
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return 0;
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}
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