Devices/Monitors

Signed-off-by: Burt P <pburt0@gmail.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/deps/sysobj_early/include/util_edid.h b/deps/sysobj_early/include/util_edid.h
new file mode 100644
index 00000000..3d54fa0d
--- /dev/null
+++ b/deps/sysobj_early/include/util_edid.h
@@ -0,0 +1,68 @@
+/*
+ * sysobj - https://github.com/bp0/verbose-spork
+ * Copyright (C) 2018  Burt P. <pburt0@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#ifndef __UTIL_EDID_H__
+#define __UTIL_EDID_H__
+
+#include <stdint.h>  /* for *int*_t types */
+
+#define EDID_MAX_EXT_BLOCKS 254
+
+/* just enough edid decoding */
+struct edid {
+    int ver_major, ver_minor;
+    char ven[4];
+
+    int d_type[4];
+    char d_text[4][14];
+
+    /* point into d_text */
+    char *name;
+    char *serial;
+    char *ut1;
+    char *ut2;
+
+    int a_or_d; /* 0 = analog, 1 = digital */
+    int bpc;
+
+    uint16_t product;
+    uint32_t n_serial;
+    int week, year;
+
+    int horiz_cm, vert_cm;
+    float diag_cm, diag_in;
+
+    int size; /* bytes */
+    int checksum_ok; /* block 0 */
+
+    int ext_blocks, ext_blocks_ok, ext_blocks_fail;
+    uint8_t ext[EDID_MAX_EXT_BLOCKS][2]; /* block type, checksum_ok */
+};
+
+int edid_fill(struct edid *id_out, const void *edid_bytes, int edid_len);
+int edid_fill_xrandr(struct edid *id_out, const char *xrandr_edid_dump);
+
+int edid_hex_to_bin(void **edid_bytes, int *edid_len, const char *hex_string);
+char *edid_bin_to_hex(const void *edid_bytes, int edid_len);
+
+const char *edid_descriptor_type(int type);
+char *edid_dump(struct edid *id);
+
+#endif