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beetle-lynx-libretro/libretro_core_options.h
vanfanel 1871b3bdfa Add force 60Hz core option.
2022-12-16 14:31:05 +01:00

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#ifndef LIBRETRO_CORE_OPTIONS_H__
#define LIBRETRO_CORE_OPTIONS_H__
#include <stdlib.h>
#include <string.h>
#include <libretro.h>
#include <retro_inline.h>
#ifndef HAVE_NO_LANGEXTRA
#include "libretro_core_options_intl.h"
#endif
/*
********************************
* VERSION: 2.0
********************************
*
* - 2.0: Add support for core options v2 interface
* - 1.3: Move translations to libretro_core_options_intl.h
* - libretro_core_options_intl.h includes BOM and utf-8
* fix for MSVC 2010-2013
* - Added HAVE_NO_LANGEXTRA flag to disable translations
* on platforms/compilers without BOM support
* - 1.2: Use core options v1 interface when
* RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION is >= 1
* (previously required RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION == 1)
* - 1.1: Support generation of core options v0 retro_core_option_value
* arrays containing options with a single value
* - 1.0: First commit
*/
#ifdef __cplusplus
extern "C" {
#endif
/*
********************************
* Core Option Definitions
********************************
*/
/* RETRO_LANGUAGE_ENGLISH */
/* Default language:
* - All other languages must include the same keys and values
* - Will be used as a fallback in the event that frontend language
* is not available
* - Will be used as a fallback for any missing entries in
* frontend language definition */
struct retro_core_option_v2_category option_cats_us[] = {
{ NULL, NULL, NULL },
};
struct retro_core_option_v2_definition option_defs_us[] = {
/* These variable names and possible values constitute an ABI with ZMZ (ZSNES Libretro player).
* Changing "Show layer 1" is fine, but don't change "layer_1"/etc or the possible values ("Yes|No").
* Adding more variables and rearranging them is safe. */
{
"lynx_rot_screen",
"Auto-rotate Screen",
NULL,
"Virtually rotate screen orientation and button mappings automatically for known games. When set to 'Manual', screen rotation is adjusted by pressing the SELECT button, otherwise a fixed rotation can be set to either 0, 90, 180 or 270 degrees counter-clockwise.",
NULL,
NULL,
{
{ "auto", "Auto" },
{ "manual", "Manual" },
{ "0", NULL },
{ "90", NULL },
{ "180", NULL },
{ "270", NULL },
{ NULL, NULL},
},
"auto",
},
{
"lynx_pix_format",
"Color Format (Restart Required)",
NULL,
"",
NULL,
NULL,
{
{ "16", "16-Bit (RGB565)" },
{ "32", "32-Bit (RGB8888)" },
{ NULL, NULL},
},
"16",
},
{
"lynx_force_60hz",
"Force 60Hz",
NULL,
"Force 60Hz instead of original 75Hz refresh rate, for perfectly smooth movement on 60Hz displays",
NULL,
NULL,
{
{ "disabled", NULL },
{ "enabled", NULL },
{ NULL, NULL },
},
"disabled"
},
{ NULL, NULL, NULL, NULL, NULL, NULL, {{0}}, NULL },
};
struct retro_core_options_v2 options_us = {
option_cats_us,
option_defs_us
};
/*
********************************
* Language Mapping
********************************
*/
#ifndef HAVE_NO_LANGEXTRA
struct retro_core_options_v2 *options_intl[RETRO_LANGUAGE_LAST] = {
&options_us, /* RETRO_LANGUAGE_ENGLISH */
&options_ja, /* RETRO_LANGUAGE_JAPANESE */
&options_fr, /* RETRO_LANGUAGE_FRENCH */
&options_es, /* RETRO_LANGUAGE_SPANISH */
&options_de, /* RETRO_LANGUAGE_GERMAN */
&options_it, /* RETRO_LANGUAGE_ITALIAN */
&options_nl, /* RETRO_LANGUAGE_DUTCH */
&options_pt_br, /* RETRO_LANGUAGE_PORTUGUESE_BRAZIL */
&options_pt_pt, /* RETRO_LANGUAGE_PORTUGUESE_PORTUGAL */
&options_ru, /* RETRO_LANGUAGE_RUSSIAN */
&options_ko, /* RETRO_LANGUAGE_KOREAN */
&options_cht, /* RETRO_LANGUAGE_CHINESE_TRADITIONAL */
&options_chs, /* RETRO_LANGUAGE_CHINESE_SIMPLIFIED */
&options_eo, /* RETRO_LANGUAGE_ESPERANTO */
&options_pl, /* RETRO_LANGUAGE_POLISH */
&options_vn, /* RETRO_LANGUAGE_VIETNAMESE */
&options_ar, /* RETRO_LANGUAGE_ARABIC */
&options_el, /* RETRO_LANGUAGE_GREEK */
&options_tr, /* RETRO_LANGUAGE_TURKISH */
&options_sk, /* RETRO_LANGUAGE_SLOVAK */
&options_fa, /* RETRO_LANGUAGE_PERSIAN */
&options_he, /* RETRO_LANGUAGE_HEBREW */
&options_ast, /* RETRO_LANGUAGE_ASTURIAN */
&options_fi, /* RETRO_LANGUAGE_FINNISH */
&options_id, /* RETRO_LANGUAGE_INDONESIAN */
&options_sv, /* RETRO_LANGUAGE_SWEDISH */
&options_uk, /* RETRO_LANGUAGE_UKRAINIAN */
&options_cs, /* RETRO_LANGUAGE_CZECH */
&options_val, /* RETRO_LANGUAGE_CATALAN_VALENCIA */
&options_ca, /* RETRO_LANGUAGE_CATALAN */
&options_en, /* RETRO_LANGUAGE_BRITISH_ENGLISH */
&options_hu, /* RETRO_LANGUAGE_HUNGARIAN */
};
#endif
/*
********************************
* Functions
********************************
*/
/* Handles configuration/setting of core options.
* Should be called as early as possible - ideally inside
* retro_set_environment(), and no later than retro_load_game()
* > We place the function body in the header to avoid the
* necessity of adding more .c files (i.e. want this to
* be as painless as possible for core devs)
*/
static INLINE void libretro_set_core_options(retro_environment_t environ_cb,
bool *categories_supported)
{
unsigned version = 0;
#ifndef HAVE_NO_LANGEXTRA
unsigned language = 0;
#endif
if (!environ_cb || !categories_supported)
return;
*categories_supported = false;
if (!environ_cb(RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION, &version))
version = 0;
if (version >= 2)
{
#ifndef HAVE_NO_LANGEXTRA
struct retro_core_options_v2_intl core_options_intl;
core_options_intl.us = &options_us;
core_options_intl.local = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_LANGUAGE, &language) &&
(language < RETRO_LANGUAGE_LAST) && (language != RETRO_LANGUAGE_ENGLISH))
core_options_intl.local = options_intl[language];
*categories_supported = environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_V2_INTL,
&core_options_intl);
#else
*categories_supported = environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_V2,
&options_us);
#endif
}
else
{
size_t i, j;
size_t option_index = 0;
size_t num_options = 0;
struct retro_core_option_definition
*option_v1_defs_us = NULL;
#ifndef HAVE_NO_LANGEXTRA
size_t num_options_intl = 0;
struct retro_core_option_v2_definition
*option_defs_intl = NULL;
struct retro_core_option_definition
*option_v1_defs_intl = NULL;
struct retro_core_options_intl
core_options_v1_intl;
#endif
struct retro_variable *variables = NULL;
char **values_buf = NULL;
/* Determine total number of options */
while (true)
{
if (option_defs_us[num_options].key)
num_options++;
else
break;
}
if (version >= 1)
{
/* Allocate US array */
option_v1_defs_us = (struct retro_core_option_definition *)
calloc(num_options + 1, sizeof(struct retro_core_option_definition));
/* Copy parameters from option_defs_us array */
for (i = 0; i < num_options; i++)
{
struct retro_core_option_v2_definition *option_def_us = &option_defs_us[i];
struct retro_core_option_value *option_values = option_def_us->values;
struct retro_core_option_definition *option_v1_def_us = &option_v1_defs_us[i];
struct retro_core_option_value *option_v1_values = option_v1_def_us->values;
option_v1_def_us->key = option_def_us->key;
option_v1_def_us->desc = option_def_us->desc;
option_v1_def_us->info = option_def_us->info;
option_v1_def_us->default_value = option_def_us->default_value;
/* Values must be copied individually... */
while (option_values->value)
{
option_v1_values->value = option_values->value;
option_v1_values->label = option_values->label;
option_values++;
option_v1_values++;
}
}
#ifndef HAVE_NO_LANGEXTRA
if (environ_cb(RETRO_ENVIRONMENT_GET_LANGUAGE, &language) &&
(language < RETRO_LANGUAGE_LAST) && (language != RETRO_LANGUAGE_ENGLISH) &&
options_intl[language])
option_defs_intl = options_intl[language]->definitions;
if (option_defs_intl)
{
/* Determine number of intl options */
while (true)
{
if (option_defs_intl[num_options_intl].key)
num_options_intl++;
else
break;
}
/* Allocate intl array */
option_v1_defs_intl = (struct retro_core_option_definition *)
calloc(num_options_intl + 1, sizeof(struct retro_core_option_definition));
/* Copy parameters from option_defs_intl array */
for (i = 0; i < num_options_intl; i++)
{
struct retro_core_option_v2_definition *option_def_intl = &option_defs_intl[i];
struct retro_core_option_value *option_values = option_def_intl->values;
struct retro_core_option_definition *option_v1_def_intl = &option_v1_defs_intl[i];
struct retro_core_option_value *option_v1_values = option_v1_def_intl->values;
option_v1_def_intl->key = option_def_intl->key;
option_v1_def_intl->desc = option_def_intl->desc;
option_v1_def_intl->info = option_def_intl->info;
option_v1_def_intl->default_value = option_def_intl->default_value;
/* Values must be copied individually... */
while (option_values->value)
{
option_v1_values->value = option_values->value;
option_v1_values->label = option_values->label;
option_values++;
option_v1_values++;
}
}
}
core_options_v1_intl.us = option_v1_defs_us;
core_options_v1_intl.local = option_v1_defs_intl;
environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL, &core_options_v1_intl);
#else
environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS, option_v1_defs_us);
#endif
}
else
{
/* Allocate arrays */
variables = (struct retro_variable *)calloc(num_options + 1,
sizeof(struct retro_variable));
values_buf = (char **)calloc(num_options, sizeof(char *));
if (!variables || !values_buf)
goto error;
/* Copy parameters from option_defs_us array */
for (i = 0; i < num_options; i++)
{
const char *key = option_defs_us[i].key;
const char *desc = option_defs_us[i].desc;
const char *default_value = option_defs_us[i].default_value;
struct retro_core_option_value *values = option_defs_us[i].values;
size_t buf_len = 3;
size_t default_index = 0;
values_buf[i] = NULL;
if (desc)
{
size_t num_values = 0;
/* Determine number of values */
while (true)
{
if (values[num_values].value)
{
/* Check if this is the default value */
if (default_value)
if (strcmp(values[num_values].value, default_value) == 0)
default_index = num_values;
buf_len += strlen(values[num_values].value);
num_values++;
}
else
break;
}
/* Build values string */
if (num_values > 0)
{
buf_len += num_values - 1;
buf_len += strlen(desc);
values_buf[i] = (char *)calloc(buf_len, sizeof(char));
if (!values_buf[i])
goto error;
strcpy(values_buf[i], desc);
strcat(values_buf[i], "; ");
/* Default value goes first */
strcat(values_buf[i], values[default_index].value);
/* Add remaining values */
for (j = 0; j < num_values; j++)
{
if (j != default_index)
{
strcat(values_buf[i], "|");
strcat(values_buf[i], values[j].value);
}
}
}
}
variables[option_index].key = key;
variables[option_index].value = values_buf[i];
option_index++;
}
/* Set variables */
environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, variables);
}
error:
/* Clean up */
if (option_v1_defs_us)
{
free(option_v1_defs_us);
option_v1_defs_us = NULL;
}
#ifndef HAVE_NO_LANGEXTRA
if (option_v1_defs_intl)
{
free(option_v1_defs_intl);
option_v1_defs_intl = NULL;
}
#endif
if (values_buf)
{
for (i = 0; i < num_options; i++)
{
if (values_buf[i])
{
free(values_buf[i]);
values_buf[i] = NULL;
}
}
free(values_buf);
values_buf = NULL;
}
if (variables)
{
free(variables);
variables = NULL;
}
}
}
#ifdef __cplusplus
}
#endif
#endif
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