mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-12-23 12:26:59 +01:00
234 lines
7.3 KiB
C++
234 lines
7.3 KiB
C++
/*************************************************************************/
|
|
/* envprobe.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* PANDEMONIUM ENGINE */
|
|
/* https://github.com/Relintai/pandemonium_engine */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2022-present Péter Magyar. */
|
|
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
// envprobe.cpp
|
|
/*
|
|
* FRT - A Godot platform targeting single board computers
|
|
* Copyright (c) 2017-2019 Emanuele Fornara
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include "frt.h"
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <dlfcn.h>
|
|
#include <unistd.h>
|
|
|
|
using namespace frt;
|
|
|
|
#define FRT_ENV_ERROR 0
|
|
#define FRT_ENV_BCM 1
|
|
#define FRT_ENV_X11 2
|
|
#define FRT_ENV_KMSDRM 3
|
|
#define FRT_ENV_BCM_NOLIB 4
|
|
|
|
static bool bcm_installed() {
|
|
#if defined(__arm__) || defined(__aarch64__)
|
|
return access("/opt/vc/lib/libbrcmEGL.so", R_OK) == 0;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
static bool find(const char *filename, bool (*pred)(const char *)) {
|
|
FILE *f = fopen(filename, "r");
|
|
if (!f)
|
|
return false;
|
|
char s[1024];
|
|
bool found = false;
|
|
while (fgets(s, sizeof(s), f)) {
|
|
if (pred(s)) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
fclose(f);
|
|
return found;
|
|
}
|
|
|
|
static bool pi_predicate(const char *line) {
|
|
return !strncmp("Hardware", line, 8) && strstr(line, "BCM2835");
|
|
}
|
|
|
|
static bool pi() {
|
|
return find("/proc/cpuinfo", pi_predicate);
|
|
}
|
|
|
|
static bool pi4_predicate(const char *line) {
|
|
return (bool)strstr(line, "aspberry Pi 4");
|
|
}
|
|
|
|
static bool pi4() {
|
|
return find("/sys/firmware/devicetree/base/model", pi4_predicate);
|
|
}
|
|
|
|
static bool has_vc4_predicate(const char *line) {
|
|
return !strncmp("vc4 ", line, 4);
|
|
}
|
|
|
|
static bool has_vc4() {
|
|
return find("/proc/modules", has_vc4_predicate);
|
|
}
|
|
|
|
static bool has_x11() {
|
|
void *lib = 0;
|
|
if (!(lib = dlopen("libX11.so.6", RTLD_LAZY)))
|
|
return false;
|
|
typedef void *(*FN_XOpenDisplay)(const char *);
|
|
typedef int (*FN_XCloseDisplay)(void *);
|
|
FN_XOpenDisplay fn_XOpenDisplay = (FN_XOpenDisplay)dlsym(lib, "XOpenDisplay");
|
|
FN_XCloseDisplay fn_XCloseDisplay = (FN_XCloseDisplay)dlsym(lib, "XCloseDisplay");
|
|
void *display = fn_XOpenDisplay(NULL);
|
|
if (display)
|
|
fn_XCloseDisplay(display);
|
|
dlclose(lib);
|
|
return (bool)display;
|
|
}
|
|
|
|
static int probe_environment() {
|
|
if (pi() && !pi4()) {
|
|
if (has_vc4()) {
|
|
if (has_x11())
|
|
return FRT_ENV_X11;
|
|
else
|
|
return FRT_ENV_KMSDRM;
|
|
} else {
|
|
if (bcm_installed())
|
|
return FRT_ENV_BCM;
|
|
else
|
|
return FRT_ENV_BCM_NOLIB;
|
|
}
|
|
} else {
|
|
if (has_x11())
|
|
return FRT_ENV_X11;
|
|
else
|
|
return FRT_ENV_KMSDRM;
|
|
}
|
|
}
|
|
|
|
static const char *next_module(char **state) {
|
|
char *s = *state;
|
|
if (!s)
|
|
return 0;
|
|
for (int i = 0; s[i]; i++)
|
|
if (s[i] == ',') {
|
|
s[i] = '\0';
|
|
*state = &s[i + 1];
|
|
return s;
|
|
}
|
|
*state = 0;
|
|
return s;
|
|
}
|
|
|
|
static bool probe_environment_override(Env *env) {
|
|
char *modules = getenv("FRT_MODULES");
|
|
if (!modules)
|
|
return false;
|
|
char *s = strdup(modules);
|
|
char *state = s;
|
|
const char *video = next_module(&state);
|
|
const char *keyboard = next_module(&state);
|
|
const char *mouse = next_module(&state);
|
|
const char *guard = next_module(&state);
|
|
if (guard || !mouse) {
|
|
printf("frt: expected FRT_MODULES=<video>,<keyboard>,<mouse>\n");
|
|
exit(1);
|
|
}
|
|
App *app = App::instance();
|
|
env->video = (Video *)app->probe(video);
|
|
env->keyboard = (Keyboard *)app->probe(keyboard);
|
|
env->mouse = (Mouse *)app->probe(mouse);
|
|
free(s);
|
|
return true;
|
|
}
|
|
|
|
namespace frt {
|
|
|
|
class EnvProbeImpl : public EnvProbe {
|
|
public:
|
|
// Module
|
|
const char *get_id() const { return "envprobe"; }
|
|
bool probe() { return true; }
|
|
void cleanup() {}
|
|
// EnvProbe
|
|
void probe_env(Env *env) {
|
|
if (probe_environment_override(env))
|
|
return;
|
|
App *app = App::instance();
|
|
switch (probe_environment()) {
|
|
case FRT_ENV_BCM:
|
|
env->video = (Video *)app->probe("video_bcm");
|
|
env->keyboard = (Keyboard *)app->probe("keyboard_linux_input");
|
|
env->mouse = (Mouse *)app->probe("mouse_linux_input");
|
|
break;
|
|
case FRT_ENV_X11:
|
|
env->video = (Video *)app->probe("video_x11");
|
|
env->keyboard = (Keyboard *)app->probe("keyboard_x11");
|
|
env->mouse = (Mouse *)app->probe("mouse_x11");
|
|
break;
|
|
case FRT_ENV_KMSDRM:
|
|
env->video = (Video *)app->probe("video_kmsdrm");
|
|
env->keyboard = (Keyboard *)app->probe("keyboard_linux_input");
|
|
env->mouse = (Mouse *)app->probe("mouse_linux_input");
|
|
break;
|
|
case FRT_ENV_BCM_NOLIB:
|
|
printf("frt: no libbrcmEGL.so found.\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
};
|
|
|
|
FRT_REGISTER(EnvProbeImpl)
|
|
|
|
} // namespace frt
|