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// SPDX-License-Identifier: MIT
/*
* A helper library for parsing and making use of real EDID data from monitors
* and make them compatible with IGT and Chamelium.
*
* Copyright 2022 Google LLC.
*
* Authors: Mark Yacoub <markyacoub@chromium.org>
*/
#include "monitor_edids_helper.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "igt_core.h"
static uint8_t convert_hex_char_to_byte(char c)
{
if (c >= '0' && c <= '9')
return c - '0';
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
assert(0);
return 0;
}
static uint8_t *get_edid_bytes_from_hex_str(const char *edid_str)
{
int i;
int edid_size = strlen(edid_str) / 2; /* each asci is a nibble. */
uint8_t *edid = (uint8_t *)malloc(edid_size);
for (i = 0; i < edid_size; i++) {
edid[i] = convert_hex_char_to_byte(edid_str[i * 2]) << 4 |
convert_hex_char_to_byte(edid_str[i * 2 + 1]);
}
return edid;
}
const char *monitor_edid_get_name(const monitor_edid *edid)
{
return edid->name;
}
struct chamelium_edid *
get_chameleon_edid_from_monitor_edid(struct chamelium *chamelium,
const monitor_edid *edid)
{
int i;
struct chamelium_edid *chamelium_edid;
uint8_t *base_edid = get_edid_bytes_from_hex_str(edid->edid);
assert(base_edid);
/*Print the full formatted EDID on debug. */
for (i = 0; i < strlen(edid->edid) / 2; i++) {
igt_debug("%02x ", base_edid[i]);
if (i % 16 == 15)
igt_debug("\n");
}
chamelium_edid = malloc(sizeof(struct chamelium_edid));
assert(chamelium_edid);
chamelium_edid->base = (struct edid *)base_edid;
chamelium_edid->chamelium = chamelium;
for (i = 0; i < CHAMELIUM_MAX_PORTS; i++) {
chamelium_edid->raw[i] = NULL;
chamelium_edid->ids[i] = 0;
}
return chamelium_edid;
}
void free_chamelium_edid_from_monitor_edid(struct chamelium_edid *edid)
{
int i;
free(edid->base);
for (i = 0; i < CHAMELIUM_MAX_PORTS; i++)
free(edid->raw[i]);
free(edid);
edid = NULL;
}
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