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/*
* cog-gamepad.c
* Copyright (C) 2022 Igalia S.L.
*
* Distributed under terms of the MIT license.
*/
#include "cog.h"
#include <wpe/wpe.h>
#if COG_ENABLE_GAMEPAD_MANETTE
extern const struct wpe_gamepad_provider_interface s_manette_provider_interface;
extern const struct wpe_gamepad_interface s_manette_device_interface;
#endif
static const struct CogGamepadBackend {
const char *name;
const struct wpe_gamepad_provider_interface *provider;
const struct wpe_gamepad_interface *device;
} s_gamepad_backends[] = {
#if COG_ENABLE_GAMEPAD_MANETTE
{
"manette",
&s_manette_provider_interface,
&s_manette_device_interface,
},
#endif
{
"none",
NULL,
NULL,
},
};
/* selected gamepad backend interfaces */
static const struct CogGamepadBackend *s_backend = &s_gamepad_backends[0];
#if COG_ENABLE_GAMEPAD_MANETTE
static struct wpe_gamepad_provider_interface s_provider_interface;
#endif
void
cog_gamepad_set_backend(const char *name)
{
static bool initialized = false;
g_return_if_fail(!initialized);
if (!name)
goto bail;
for (int i = 0; i < G_N_ELEMENTS(s_gamepad_backends); i++) {
if (g_strcmp0(name, s_gamepad_backends[i].name) == 0) {
s_backend = &s_gamepad_backends[i];
break;
}
}
bail:
g_debug("gamepad backend: %s", s_backend->name);
initialized = true;
}
void
cog_gamepad_setup(GamepadProviderGetViewBackend *gamepad_get_view)
{
static bool initialized = false;
g_return_if_fail(!initialized);
g_debug("gamepad setup: %s", s_backend->name);
if (!s_backend->provider)
return;
#if COG_ENABLE_GAMEPAD_MANETTE
/* to add gamepad_get_view, use a non-const temporal provider interface */
s_provider_interface = (struct wpe_gamepad_provider_interface) * s_backend->provider;
s_provider_interface.get_view_backend = gamepad_get_view;
wpe_gamepad_set_handler(&s_provider_interface, s_backend->device);
#endif
initialized = true;
}
gboolean
cog_gamepad_parse_backend(const char *name, GError **error)
{
g_autoptr(GString) list = g_string_new("");
for (int i = 0; i < G_N_ELEMENTS(s_gamepad_backends); i++) {
if (g_strcmp0(name, s_gamepad_backends[i].name) == 0)
return TRUE;
if (list->len == 0) /* default */
g_string_append_printf(list, "*%s", s_gamepad_backends[i].name);
else
g_string_append_printf(list, ", %s", s_gamepad_backends[i].name);
}
g_set_error(error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
"Invalid gamepad implementation: '%s'. Options: [ %s ]", name, list->str);
return FALSE;
}
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