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RetroArch/dynamic.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "dynamic.h"
#include <compat/strl.h>
#include <compat/posix_string.h>
#include "retroarch_logger.h"
#include "performance.h"
#include <file/file_path.h>
#include <string.h>
#include <ctype.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <boolean.h>
#include "libretro_private.h"
#include "dynamic_dummy.h"
#include "retroarch.h"
#include "runloop.h"
#include "input/input_sensor.h"
#ifdef NEED_DYNAMIC
#ifdef _WIN32
#include <windows.h>
#else
#include <dlfcn.h>
#endif
#endif
#ifdef HAVE_DYNAMIC
#undef SYM
#define SYM(x) do { \
function_t func = dylib_proc(lib_handle, #x); \
memcpy(&p##x, &func, sizeof(func)); \
if (p##x == NULL) { RARCH_ERR("Failed to load symbol: \"%s\"\n", #x); rarch_fail(1, "init_libretro_sym()"); } \
} while (0)
static dylib_t lib_handle;
#else
#define SYM(x) p##x = x
#endif
#define SYM_DUMMY(x) p##x = libretro_dummy_##x
void (*pretro_init)(void);
void (*pretro_deinit)(void);
unsigned (*pretro_api_version)(void);
void (*pretro_get_system_info)(struct retro_system_info*);
void (*pretro_get_system_av_info)(struct retro_system_av_info*);
void (*pretro_set_environment)(retro_environment_t);
void (*pretro_set_video_refresh)(retro_video_refresh_t);
void (*pretro_set_audio_sample)(retro_audio_sample_t);
void (*pretro_set_audio_sample_batch)(retro_audio_sample_batch_t);
void (*pretro_set_input_poll)(retro_input_poll_t);
void (*pretro_set_input_state)(retro_input_state_t);
void (*pretro_set_controller_port_device)(unsigned, unsigned);
void (*pretro_reset)(void);
void (*pretro_run)(void);
size_t (*pretro_serialize_size)(void);
bool (*pretro_serialize)(void*, size_t);
bool (*pretro_unserialize)(const void*, size_t);
void (*pretro_cheat_reset)(void);
void (*pretro_cheat_set)(unsigned, bool, const char*);
bool (*pretro_load_game)(const struct retro_game_info*);
bool (*pretro_load_game_special)(unsigned,
const struct retro_game_info*, size_t);
void (*pretro_unload_game)(void);
unsigned (*pretro_get_region)(void);
void *(*pretro_get_memory_data)(unsigned);
size_t (*pretro_get_memory_size)(unsigned);
static bool ignore_environment_cb;
#ifdef HAVE_DYNAMIC
static bool *load_no_content_hook;
static bool environ_cb_get_system_info(unsigned cmd, void *data)
{
switch (cmd)
{
case RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME:
*load_no_content_hook = *(const bool*)data;
break;
default:
return false;
}
return true;
}
/**
* libretro_get_environment_info:
* @func : Function pointer for get_environment_info.
* @load_no_content : If true, core should be able to auto-start
* without any content loaded.
*
* Sets environment callback in order to get statically known
* information from it.
*
* Fetched via environment callbacks instead of
* retro_get_system_info(), as this info is part of extensions.
*
* Should only be called once right after core load to
* avoid overwriting the "real" environ callback.
*
* For statically linked cores, pass retro_set_environment as argument.
*/
void libretro_get_environment_info(void (*func)(retro_environment_t),
bool *load_no_content)
{
load_no_content_hook = load_no_content;
/* load_no_content gets set in this callback. */
func(environ_cb_get_system_info);
/* It's possible that we just set get_system_info callback to the currently running core.
* Make sure we reset it to the actual environment callback.
* Ignore any environment callbacks here in case we're running on the non-current core. */
ignore_environment_cb = true;
func(rarch_environment_cb);
ignore_environment_cb = false;
}
static dylib_t libretro_get_system_info_lib(const char *path,
struct retro_system_info *info, bool *load_no_content)
{
dylib_t lib = dylib_load(path);
if (!lib)
return NULL;
void (*proc)(struct retro_system_info*) =
(void (*)(struct retro_system_info*))dylib_proc(lib,
"retro_get_system_info");
if (!proc)
{
dylib_close(lib);
return NULL;
}
proc(info);
if (load_no_content)
{
*load_no_content = false;
void (*set_environ)(retro_environment_t) =
(void (*)(retro_environment_t))dylib_proc(lib,
"retro_set_environment");
if (!set_environ)
return lib;
libretro_get_environment_info(set_environ, load_no_content);
}
return lib;
}
/**
* libretro_get_system_info:
* @path : Path to libretro library.
* @info : Pointer to system info information.
* @load_no_content : If true, core should be able to auto-start
* without any content loaded.
*
* Gets system info from an arbitrary lib.
* The struct returned must be freed as strings are allocated dynamically.
*
* Returns: true (1) if successful, otherwise false (0).
**/
bool libretro_get_system_info(const char *path,
struct retro_system_info *info, bool *load_no_content)
{
struct retro_system_info dummy_info = {0};
dylib_t lib = libretro_get_system_info_lib(path,
&dummy_info, load_no_content);
if (!lib)
return false;
memcpy(info, &dummy_info, sizeof(*info));
info->library_name = strdup(dummy_info.library_name);
info->library_version = strdup(dummy_info.library_version);
if (dummy_info.valid_extensions)
info->valid_extensions = strdup(dummy_info.valid_extensions);
dylib_close(lib);
return true;
}
/**
* libretro_free_system_info:
* @info : Pointer to system info information.
*
* Frees system information.
**/
void libretro_free_system_info(struct retro_system_info *info)
{
if (!info)
return;
free((void*)info->library_name);
free((void*)info->library_version);
free((void*)info->valid_extensions);
memset(info, 0, sizeof(*info));
}
#endif
const struct retro_subsystem_info *libretro_find_subsystem_info(
const struct retro_subsystem_info *info, unsigned num_info,
const char *ident)
{
unsigned i;
for (i = 0; i < num_info; i++)
{
if (!strcmp(info[i].ident, ident))
return &info[i];
else if (!strcmp(info[i].desc, ident))
return &info[i];
}
return NULL;
}
/**
* libretro_find_controller_description:
* @info : Pointer to controller info handle.
* @id : Identifier of controller to search
* for.
*
* Search for a controller of type @id in @info.
*
* Returns: controller description of found controller on success,
* otherwise NULL.
**/
const struct retro_controller_description *
libretro_find_controller_description(
const struct retro_controller_info *info, unsigned id)
{
unsigned i;
for (i = 0; i < info->num_types; i++)
{
if (info->types[i].id != id)
continue;
return &info->types[i];
}
return NULL;
}
/**
* load_symbols:
* @dummy : Load dummy symbols if true
*
* Setup libretro callback symbols.
**/
static void load_symbols(bool is_dummy)
{
if (is_dummy)
{
SYM_DUMMY(retro_init);
SYM_DUMMY(retro_deinit);
SYM_DUMMY(retro_api_version);
SYM_DUMMY(retro_get_system_info);
SYM_DUMMY(retro_get_system_av_info);
SYM_DUMMY(retro_set_environment);
SYM_DUMMY(retro_set_video_refresh);
SYM_DUMMY(retro_set_audio_sample);
SYM_DUMMY(retro_set_audio_sample_batch);
SYM_DUMMY(retro_set_input_poll);
SYM_DUMMY(retro_set_input_state);
SYM_DUMMY(retro_set_controller_port_device);
SYM_DUMMY(retro_reset);
SYM_DUMMY(retro_run);
SYM_DUMMY(retro_serialize_size);
SYM_DUMMY(retro_serialize);
SYM_DUMMY(retro_unserialize);
SYM_DUMMY(retro_cheat_reset);
SYM_DUMMY(retro_cheat_set);
SYM_DUMMY(retro_load_game);
SYM_DUMMY(retro_load_game_special);
SYM_DUMMY(retro_unload_game);
SYM_DUMMY(retro_get_region);
SYM_DUMMY(retro_get_memory_data);
SYM_DUMMY(retro_get_memory_size);
}
else
{
#ifdef HAVE_DYNAMIC
/* Need to use absolute path for this setting. It can be
* saved to content history, and a relative path would
* break in that scenario. */
path_resolve_realpath(g_settings.libretro,
sizeof(g_settings.libretro));
RARCH_LOG("Loading dynamic libretro from: \"%s\"\n",
g_settings.libretro);
lib_handle = dylib_load(g_settings.libretro);
if (!lib_handle)
{
RARCH_ERR("Failed to open dynamic library: \"%s\"\n",
g_settings.libretro);
rarch_fail(1, "load_dynamic()");
}
#endif
SYM(retro_init);
SYM(retro_deinit);
SYM(retro_api_version);
SYM(retro_get_system_info);
SYM(retro_get_system_av_info);
SYM(retro_set_environment);
SYM(retro_set_video_refresh);
SYM(retro_set_audio_sample);
SYM(retro_set_audio_sample_batch);
SYM(retro_set_input_poll);
SYM(retro_set_input_state);
SYM(retro_set_controller_port_device);
SYM(retro_reset);
SYM(retro_run);
SYM(retro_serialize_size);
SYM(retro_serialize);
SYM(retro_unserialize);
SYM(retro_cheat_reset);
SYM(retro_cheat_set);
SYM(retro_load_game);
SYM(retro_load_game_special);
SYM(retro_unload_game);
SYM(retro_get_region);
SYM(retro_get_memory_data);
SYM(retro_get_memory_size);
}
}
/**
* libretro_get_current_core_pathname:
* @name : Sanitized name of libretro core.
* @size : Size of @name
*
* Transforms a library id to a name suitable as a pathname.
**/
void libretro_get_current_core_pathname(char *name, size_t size)
{
size_t i;
const char *id = NULL;
struct retro_system_info info = {0};
if (size == 0)
return;
pretro_get_system_info(&info);
id = info.library_name ? info.library_name : "Unknown";
if (!id || strlen(id) >= size)
{
name[0] = '\0';
return;
}
name[strlen(id)] = '\0';
for (i = 0; id[i] != '\0'; i++)
{
char c = id[i];
if (isspace(c) || isblank(c))
name[i] = '_';
else
name[i] = tolower(c);
}
}
/**
* init_libretro_sym:
* @dummy : Load dummy symbols if true
*
* Initializes libretro symbols and
* setups environment callback functions.
**/
void init_libretro_sym(bool dummy)
{
/* Guarantee that we can do "dirty" casting.
* Every OS that this program supports should pass this. */
rarch_assert(sizeof(void*) == sizeof(void (*)(void)));
if (!dummy)
{
#ifdef HAVE_DYNAMIC
/* Try to verify that -lretro was not linked in from other modules
* since loading it dynamically and with -l will fail hard. */
function_t sym = dylib_proc(NULL, "retro_init");
if (sym)
{
RARCH_ERR("Serious problem. RetroArch wants to load libretro dyamically, but it is already linked.\n");
RARCH_ERR("This could happen if other modules RetroArch depends on link against libretro directly.\n");
RARCH_ERR("Proceeding could cause a crash. Aborting ...\n");
rarch_fail(1, "init_libretro_sym()");
}
if (!*g_settings.libretro)
{
RARCH_ERR("RetroArch is built for dynamic libretro, but libretro_path is not set. Cannot continue.\n");
rarch_fail(1, "init_libretro_sym()");
}
#endif
}
load_symbols(dummy);
pretro_set_environment(rarch_environment_cb);
}
/**
* uninit_libretro_sym:
*
* Frees libretro core.
*
* Frees all core options,
* associated state, and
* unbind all libretro callback symbols.
**/
void uninit_libretro_sym(void)
{
driver_t *driver = driver_get_ptr();
#ifdef HAVE_DYNAMIC
if (lib_handle)
dylib_close(lib_handle);
lib_handle = NULL;
#endif
if (g_extern.system.core_options)
{
core_option_flush(g_extern.system.core_options);
core_option_free(g_extern.system.core_options);
}
/* No longer valid. */
free(g_extern.system.special);
free(g_extern.system.ports);
memset(&g_extern.system, 0, sizeof(g_extern.system));
driver->camera_active = false;
driver->location_active = false;
/* Performance counters no longer valid. */
retro_perf_clear();
}
#ifdef NEED_DYNAMIC
/**
* dylib_load:
* @path : Path to libretro core library.
*
* Platform independent dylib loading.
*
* Returns: library handle on success, otherwise NULL.
**/
dylib_t dylib_load(const char *path)
{
#ifdef _WIN32
dylib_t lib = LoadLibrary(path);
if (!lib)
RARCH_ERR("Failed to load library, error code: 0x%x\n",
(unsigned)GetLastError());
return lib;
#else
dylib_t lib = dlopen(path, RTLD_LAZY);
if (!lib)
RARCH_ERR("dylib_load() failed: \"%s\".\n", dlerror());
return lib;
#endif
}
function_t dylib_proc(dylib_t lib, const char *proc)
{
function_t sym;
void *ptr_sym = NULL;
(void)ptr_sym;
#ifdef _WIN32
sym = (function_t)GetProcAddress(lib ?
(HMODULE)lib : GetModuleHandle(NULL), proc);
#else
if (lib)
ptr_sym = dlsym(lib, proc);
else
{
void *handle = dlopen(NULL, RTLD_LAZY);
if (handle)
{
ptr_sym = dlsym(handle, proc);
dlclose(handle);
}
}
/* Dirty hack to workaround the non-legality of
* (void*) -> fn-pointer casts. */
memcpy(&sym, &ptr_sym, sizeof(void*));
#endif
return sym;
}
/**
* dylib_close:
* @lib : Library handle.
*
* Frees library handle.
**/
void dylib_close(dylib_t lib)
{
#ifdef _WIN32
FreeLibrary((HMODULE)lib);
#else
#ifndef NO_DLCLOSE
dlclose(lib);
#endif
#endif
}
#endif
static void rarch_log_libretro(enum retro_log_level level,
const char *fmt, ...)
{
va_list vp;
if ((unsigned)level < g_settings.libretro_log_level)
return;
va_start(vp, fmt);
switch (level)
{
case RETRO_LOG_DEBUG:
RARCH_LOG_V("[libretro DEBUG] :: ", fmt, vp);
break;
case RETRO_LOG_INFO:
RARCH_LOG_OUTPUT_V("[libretro INFO] :: ", fmt, vp);
break;
case RETRO_LOG_WARN:
RARCH_WARN_V("[libretro WARN] :: ", fmt, vp);
break;
case RETRO_LOG_ERROR:
RARCH_ERR_V("[libretro ERROR] :: ", fmt, vp);
break;
default:
break;
}
va_end(vp);
}
/**
* rarch_environment_cb:
* @cmd : Identifier of command.
* @data : Pointer to data.
*
* Environment callback function implementation.
*
* Returns: true (1) if environment callback command could
* be performed, otherwise false (0).
**/
bool rarch_environment_cb(unsigned cmd, void *data)
{
unsigned p;
driver_t *driver = driver_get_ptr();
if (ignore_environment_cb)
return false;
switch (cmd)
{
case RETRO_ENVIRONMENT_GET_OVERSCAN:
*(bool*)data = !g_settings.video.crop_overscan;
RARCH_LOG("Environ GET_OVERSCAN: %u\n",
(unsigned)!g_settings.video.crop_overscan);
break;
case RETRO_ENVIRONMENT_GET_CAN_DUPE:
*(bool*)data = true;
RARCH_LOG("Environ GET_CAN_DUPE: true\n");
break;
case RETRO_ENVIRONMENT_GET_VARIABLE:
{
struct retro_variable *var = (struct retro_variable*)data;
RARCH_LOG("Environ GET_VARIABLE %s:\n", var->key);
if (g_extern.system.core_options)
core_option_get(g_extern.system.core_options, var);
else
var->value = NULL;
RARCH_LOG("\t%s\n", var->value ? var->value : "N/A");
break;
}
case RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE:
*(bool*)data = g_extern.system.core_options ?
core_option_updated(g_extern.system.core_options) : false;
break;
case RETRO_ENVIRONMENT_SET_VARIABLES:
{
RARCH_LOG("Environ SET_VARIABLES.\n");
if (g_extern.system.core_options)
{
core_option_flush(g_extern.system.core_options);
core_option_free(g_extern.system.core_options);
}
const struct retro_variable *vars =
(const struct retro_variable*)data;
const char *options_path = g_settings.core_options_path;
char buf[PATH_MAX_LENGTH];
if (!*options_path && *g_extern.config_path)
{
fill_pathname_resolve_relative(buf, g_extern.config_path,
"retroarch-core-options.cfg", sizeof(buf));
options_path = buf;
}
g_extern.system.core_options = core_option_new(options_path, vars);
break;
}
case RETRO_ENVIRONMENT_SET_MESSAGE:
{
const struct retro_message *msg = (const struct retro_message*)data;
RARCH_LOG("Environ SET_MESSAGE: %s\n", msg->msg);
rarch_main_msg_queue_push(msg->msg, 1, msg->frames, true);
break;
}
case RETRO_ENVIRONMENT_SET_ROTATION:
{
unsigned rotation = *(const unsigned*)data;
RARCH_LOG("Environ SET_ROTATION: %u\n", rotation);
if (!g_settings.video.allow_rotate)
break;
g_extern.system.rotation = rotation;
if (driver->video && driver->video->set_rotation)
{
if (driver->video_data)
driver->video->set_rotation(driver->video_data, rotation);
}
else
return false;
break;
}
case RETRO_ENVIRONMENT_SHUTDOWN:
RARCH_LOG("Environ SHUTDOWN.\n");
g_extern.system.shutdown = true;
g_extern.core_shutdown_initiated = true;
break;
case RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL:
g_extern.system.performance_level = *(const unsigned*)data;
RARCH_LOG("Environ PERFORMANCE_LEVEL: %u.\n",
g_extern.system.performance_level);
break;
case RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY:
*(const char**)data = *g_settings.system_directory ?
g_settings.system_directory : NULL;
RARCH_LOG("Environ SYSTEM_DIRECTORY: \"%s\".\n",
g_settings.system_directory);
break;
case RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY:
*(const char**)data = *g_extern.savefile_dir ?
g_extern.savefile_dir : NULL;
RARCH_LOG("Environ SAVE_DIRECTORY: \"%s\".\n",
g_extern.savefile_dir);
break;
case RETRO_ENVIRONMENT_GET_USERNAME:
*(const char**)data = *g_settings.username ?
g_settings.username : NULL;
RARCH_LOG("Environ GET_USERNAME: \"%s\".\n",
g_settings.username);
break;
case RETRO_ENVIRONMENT_GET_LANGUAGE:
*(unsigned *)data = g_settings.user_language;
RARCH_LOG("Environ GET_LANGUAGE: \"%u\".\n",
g_settings.user_language);
break;
case RETRO_ENVIRONMENT_SET_PIXEL_FORMAT:
{
enum retro_pixel_format pix_fmt =
*(const enum retro_pixel_format*)data;
switch (pix_fmt)
{
case RETRO_PIXEL_FORMAT_0RGB1555:
RARCH_LOG("Environ SET_PIXEL_FORMAT: 0RGB1555.\n");
break;
case RETRO_PIXEL_FORMAT_RGB565:
RARCH_LOG("Environ SET_PIXEL_FORMAT: RGB565.\n");
break;
case RETRO_PIXEL_FORMAT_XRGB8888:
RARCH_LOG("Environ SET_PIXEL_FORMAT: XRGB8888.\n");
break;
default:
return false;
}
g_extern.system.pix_fmt = pix_fmt;
break;
}
case RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS:
{
unsigned retro_id, retro_port;
const struct retro_input_descriptor *desc = NULL;
memset(g_extern.system.input_desc_btn, 0,
sizeof(g_extern.system.input_desc_btn));
desc = (const struct retro_input_descriptor*)data;
for (; desc->description; desc++)
{
retro_port = desc->port;
retro_id = desc->id;
if (desc->port >= MAX_USERS)
continue;
/* Ignore all others for now. */
if (desc->device != RETRO_DEVICE_JOYPAD &&
desc->device != RETRO_DEVICE_ANALOG)
continue;
if (desc->id >= RARCH_FIRST_CUSTOM_BIND)
continue;
if (desc->device == RETRO_DEVICE_ANALOG)
{
switch (retro_id)
{
case RETRO_DEVICE_ID_ANALOG_X:
switch (desc->index)
{
case RETRO_DEVICE_INDEX_ANALOG_LEFT:
g_extern.system.input_desc_btn[retro_port][RARCH_ANALOG_LEFT_X_PLUS] = desc->description;
g_extern.system.input_desc_btn[retro_port][RARCH_ANALOG_LEFT_X_MINUS] = desc->description;
break;
case RETRO_DEVICE_INDEX_ANALOG_RIGHT:
g_extern.system.input_desc_btn[retro_port][RARCH_ANALOG_RIGHT_X_PLUS] = desc->description;
g_extern.system.input_desc_btn[retro_port][RARCH_ANALOG_RIGHT_X_MINUS] = desc->description;
break;
}
break;
case RETRO_DEVICE_ID_ANALOG_Y:
switch (desc->index)
{
case RETRO_DEVICE_INDEX_ANALOG_LEFT:
g_extern.system.input_desc_btn[retro_port][RARCH_ANALOG_LEFT_Y_PLUS] = desc->description;
g_extern.system.input_desc_btn[retro_port][RARCH_ANALOG_LEFT_Y_MINUS] = desc->description;
break;
case RETRO_DEVICE_INDEX_ANALOG_RIGHT:
g_extern.system.input_desc_btn[retro_port][RARCH_ANALOG_RIGHT_Y_PLUS] = desc->description;
g_extern.system.input_desc_btn[retro_port][RARCH_ANALOG_RIGHT_Y_MINUS] = desc->description;
break;
}
break;
}
}
else
{
g_extern.system.input_desc_btn[retro_port][retro_id] = desc->description;
}
}
static const char *libretro_btn_desc[] = {
"B (bottom)", "Y (left)", "Select", "Start",
"D-Pad Up", "D-Pad Down", "D-Pad Left", "D-Pad Right",
"A (right)", "X (up)",
"L", "R", "L2", "R2", "L3", "R3",
};
RARCH_LOG("Environ SET_INPUT_DESCRIPTORS:\n");
for (p = 0; p < g_settings.input.max_users; p++)
{
for (retro_id = 0; retro_id < RARCH_FIRST_CUSTOM_BIND; retro_id++)
{
const char *description = g_extern.system.input_desc_btn[p][retro_id];
if (!description)
continue;
RARCH_LOG("\tRetroPad, User %u, Button \"%s\" => \"%s\"\n",
p + 1, libretro_btn_desc[retro_id], description);
}
}
g_extern.has_set_input_descriptors = true;
break;
}
case RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK:
{
const struct retro_keyboard_callback *info =
(const struct retro_keyboard_callback*)data;
RARCH_LOG("Environ SET_KEYBOARD_CALLBACK.\n");
g_extern.system.key_event = info->callback;
g_extern.frontend_key_event = g_extern.system.key_event;
break;
}
case RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE:
RARCH_LOG("Environ SET_DISK_CONTROL_INTERFACE.\n");
g_extern.system.disk_control =
*(const struct retro_disk_control_callback*)data;
break;
case RETRO_ENVIRONMENT_SET_HW_RENDER:
case RETRO_ENVIRONMENT_SET_HW_RENDER | RETRO_ENVIRONMENT_EXPERIMENTAL:
{
struct retro_hw_render_callback *cb =
(struct retro_hw_render_callback*)data;
RARCH_LOG("Environ SET_HW_RENDER.\n");
switch (cb->context_type)
{
case RETRO_HW_CONTEXT_NONE:
RARCH_LOG("Requesting no HW context.\n");
break;
#if defined(HAVE_OPENGLES2)
case RETRO_HW_CONTEXT_OPENGLES2:
#if defined(HAVE_OPENGLES3)
case RETRO_HW_CONTEXT_OPENGLES3:
#endif
RARCH_LOG("Requesting OpenGLES%u context.\n",
cb->context_type == RETRO_HW_CONTEXT_OPENGLES2 ? 2 : 3);
break;
#if defined(HAVE_OPENGLES3)
case RETRO_HW_CONTEXT_OPENGLES_VERSION:
RARCH_LOG("Requesting OpenGLES%u.%u context.\n",
cb->version_major, cb->version_minor);
break;
#endif
case RETRO_HW_CONTEXT_OPENGL:
case RETRO_HW_CONTEXT_OPENGL_CORE:
RARCH_ERR("Requesting OpenGL context, but RetroArch is compiled against OpenGLES2. Cannot use HW context.\n");
return false;
#elif defined(HAVE_OPENGL)
case RETRO_HW_CONTEXT_OPENGLES2:
case RETRO_HW_CONTEXT_OPENGLES3:
RARCH_ERR("Requesting OpenGLES%u context, but RetroArch is compiled against OpenGL. Cannot use HW context.\n",
cb->context_type == RETRO_HW_CONTEXT_OPENGLES2 ? 2 : 3);
return false;
case RETRO_HW_CONTEXT_OPENGLES_VERSION:
RARCH_ERR("Requesting OpenGLES%u.%u context, but RetroArch is compiled against OpenGL. Cannot use HW context.\n",
cb->version_major, cb->version_minor);
return false;
case RETRO_HW_CONTEXT_OPENGL:
RARCH_LOG("Requesting OpenGL context.\n");
break;
case RETRO_HW_CONTEXT_OPENGL_CORE:
RARCH_LOG("Requesting core OpenGL context (%u.%u).\n",
cb->version_major, cb->version_minor);
break;
#endif
default:
RARCH_LOG("Requesting unknown context.\n");
return false;
}
cb->get_current_framebuffer = video_driver_get_current_framebuffer;
cb->get_proc_address = video_driver_get_proc_address;
if (cmd & RETRO_ENVIRONMENT_EXPERIMENTAL) /* Old ABI. Don't copy garbage. */
memcpy(&g_extern.system.hw_render_callback,
cb, offsetof(struct retro_hw_render_callback, stencil));
else
memcpy(&g_extern.system.hw_render_callback, cb, sizeof(*cb));
break;
}
case RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME:
{
bool state = *(const bool*)data;
RARCH_LOG("Environ SET_SUPPORT_NO_GAME: %s.\n", state ? "yes" : "no");
g_extern.system.no_content = state;
break;
}
case RETRO_ENVIRONMENT_GET_LIBRETRO_PATH:
{
const char **path = (const char**)data;
#ifdef HAVE_DYNAMIC
*path = g_settings.libretro;
#else
*path = NULL;
#endif
break;
}
/* FIXME - PS3 audio driver needs to be fixed so that threaded
* audio works correctly (audio is already on a thread for PS3
* audio driver so that's probably the problem) */
#if defined(HAVE_THREADS) && !defined(__CELLOS_LV2__)
case RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK:
{
RARCH_LOG("Environ SET_AUDIO_CALLBACK.\n");
const struct retro_audio_callback *info =
(const struct retro_audio_callback*)data;
if (driver->recording_data) // A/V sync is a must.
return false;
#ifdef HAVE_NETPLAY
if (g_extern.netplay_enable)
return false;
#endif
g_extern.system.audio_callback = *info;
break;
}
#endif
case RETRO_ENVIRONMENT_SET_FRAME_TIME_CALLBACK:
{
const struct retro_frame_time_callback *info =
(const struct retro_frame_time_callback*)data;
RARCH_LOG("Environ SET_FRAME_TIME_CALLBACK.\n");
#ifdef HAVE_NETPLAY
/* retro_run() will be called in very strange and
* mysterious ways, have to disable it. */
if (g_extern.netplay_enable)
return false;
#endif
g_extern.system.frame_time = *info;
break;
}
case RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE:
{
struct retro_rumble_interface *iface =
(struct retro_rumble_interface*)data;
RARCH_LOG("Environ GET_RUMBLE_INTERFACE.\n");
iface->set_rumble_state = input_driver_set_rumble_state;
break;
}
case RETRO_ENVIRONMENT_GET_INPUT_DEVICE_CAPABILITIES:
{
uint64_t *mask = (uint64_t*)data;
RARCH_LOG("Environ GET_INPUT_DEVICE_CAPABILITIES.\n");
if (driver->input &&
driver->input->get_capabilities && driver->input_data)
*mask = driver->input->get_capabilities(driver->input_data);
else
return false;
break;
}
case RETRO_ENVIRONMENT_GET_SENSOR_INTERFACE:
{
struct retro_sensor_interface *iface =
(struct retro_sensor_interface*)data;
RARCH_LOG("Environ GET_SENSOR_INTERFACE.\n");
iface->set_sensor_state = input_sensor_set_state;
iface->get_sensor_input = input_sensor_get_input;
break;
}
case RETRO_ENVIRONMENT_GET_CAMERA_INTERFACE:
{
struct retro_camera_callback *cb =
(struct retro_camera_callback*)data;
RARCH_LOG("Environ GET_CAMERA_INTERFACE.\n");
cb->start = driver_camera_start;
cb->stop = driver_camera_stop;
g_extern.system.camera_callback = *cb;
driver->camera_active = cb->caps != 0;
break;
}
case RETRO_ENVIRONMENT_GET_LOCATION_INTERFACE:
{
struct retro_location_callback *cb =
(struct retro_location_callback*)data;
RARCH_LOG("Environ GET_LOCATION_INTERFACE.\n");
cb->start = driver_location_start;
cb->stop = driver_location_stop;
cb->get_position = driver_location_get_position;
cb->set_interval = driver_location_set_interval;
g_extern.system.location_callback = *cb;
driver->location_active = true;
break;
}
case RETRO_ENVIRONMENT_GET_LOG_INTERFACE:
{
struct retro_log_callback *cb = (struct retro_log_callback*)data;
RARCH_LOG("Environ GET_LOG_INTERFACE.\n");
cb->log = rarch_log_libretro;
break;
}
case RETRO_ENVIRONMENT_GET_PERF_INTERFACE:
{
struct retro_perf_callback *cb = (struct retro_perf_callback*)data;
RARCH_LOG("Environ GET_PERF_INTERFACE.\n");
cb->get_time_usec = rarch_get_time_usec;
cb->get_cpu_features = rarch_get_cpu_features;
cb->get_perf_counter = rarch_get_perf_counter;
cb->perf_register = retro_perf_register; /* libretro specific path. */
cb->perf_start = rarch_perf_start;
cb->perf_stop = rarch_perf_stop;
cb->perf_log = retro_perf_log; /* libretro specific path. */
break;
}
case RETRO_ENVIRONMENT_GET_CORE_ASSETS_DIRECTORY:
{
const char **dir = (const char**)data;
*dir = *g_settings.core_assets_directory ?
g_settings.core_assets_directory : NULL;
RARCH_LOG("Environ CORE_ASSETS_DIRECTORY: \"%s\".\n",
g_settings.core_assets_directory);
break;
}
case RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO:
{
RARCH_LOG("Environ SET_SYSTEM_AV_INFO.\n");
return driver_update_system_av_info(
(const struct retro_system_av_info*)data);
}
case RETRO_ENVIRONMENT_SET_SUBSYSTEM_INFO:
{
unsigned i, j;
const struct retro_subsystem_info *info =
(const struct retro_subsystem_info*)data;
RARCH_LOG("Environ SET_SUBSYSTEM_INFO.\n");
for (i = 0; info[i].ident; i++)
{
RARCH_LOG("Special game type: %s\n", info[i].desc);
RARCH_LOG(" Ident: %s\n", info[i].ident);
RARCH_LOG(" ID: %u\n", info[i].id);
RARCH_LOG(" Content:\n");
for (j = 0; j < info[i].num_roms; j++)
{
RARCH_LOG(" %s (%s)\n",
info[i].roms[j].desc, info[i].roms[j].required ?
"required" : "optional");
}
}
free(g_extern.system.special);
g_extern.system.special = (struct retro_subsystem_info*)
calloc(i, sizeof(*g_extern.system.special));
if (!g_extern.system.special)
return false;
memcpy(g_extern.system.special, info,
i * sizeof(*g_extern.system.special));
g_extern.system.num_special = i;
break;
}
case RETRO_ENVIRONMENT_SET_CONTROLLER_INFO:
{
unsigned i, j;
const struct retro_controller_info *info =
(const struct retro_controller_info*)data;
RARCH_LOG("Environ SET_CONTROLLER_INFO.\n");
for (i = 0; info[i].types; i++)
{
RARCH_LOG("Controller port: %u\n", i + 1);
for (j = 0; j < info[i].num_types; j++)
RARCH_LOG(" %s (ID: %u)\n", info[i].types[j].desc,
info[i].types[j].id);
}
free(g_extern.system.ports);
g_extern.system.ports = (struct retro_controller_info*)
calloc(i, sizeof(*g_extern.system.ports));
if (!g_extern.system.ports)
return false;
memcpy(g_extern.system.ports, info,
i * sizeof(*g_extern.system.ports));
g_extern.system.num_ports = i;
break;
}
case RETRO_ENVIRONMENT_SET_GEOMETRY:
{
const struct retro_game_geometry *in_geom =
(const struct retro_game_geometry*)data;
struct retro_game_geometry *geom = &g_extern.system.av_info.geometry;
RARCH_LOG("Environ SET_GEOMETRY.\n");
/* Can potentially be called every frame,
* don't do anything unless required. */
if (geom->base_width != in_geom->base_width ||
geom->base_height != in_geom->base_height ||
geom->aspect_ratio != in_geom->aspect_ratio)
{
geom->base_width = in_geom->base_width;
geom->base_height = in_geom->base_height;
geom->aspect_ratio = in_geom->aspect_ratio;
RARCH_LOG("SET_GEOMETRY: %ux%u, aspect: %.3f.\n",
geom->base_width, geom->base_height, geom->aspect_ratio);
/* Forces recomputation of aspect ratios if
* using core-dependent aspect ratios. */
rarch_main_command(RARCH_CMD_VIDEO_SET_ASPECT_RATIO);
/* TODO: Figure out what to do, if anything, with recording. */
}
break;
}
/* Private extensions for internal use, not part of libretro API. */
case RETRO_ENVIRONMENT_SET_LIBRETRO_PATH:
RARCH_LOG("Environ (Private) SET_LIBRETRO_PATH.\n");
if (path_file_exists((const char*)data))
strlcpy(g_settings.libretro, (const char*)data,
sizeof(g_settings.libretro));
else
return false;
break;
case RETRO_ENVIRONMENT_EXEC:
case RETRO_ENVIRONMENT_EXEC_ESCAPE:
if (data)
strlcpy(g_extern.fullpath, (const char*)data,
sizeof(g_extern.fullpath));
else
*g_extern.fullpath = '\0';
#if defined(RARCH_CONSOLE)
if (driver->frontend_ctx && driver->frontend_ctx->set_fork)
driver->frontend_ctx->set_fork(true, true);
#elif defined(HAVE_DYNAMIC)
rarch_main_set_state(RARCH_ACTION_STATE_LOAD_CONTENT);
#endif
if (cmd == RETRO_ENVIRONMENT_EXEC_ESCAPE)
{
RARCH_LOG("Environ (Private) EXEC_ESCAPE.\n");
g_extern.exec = true;
}
else
RARCH_LOG("Environ (Private) EXEC.\n");
break;
default:
RARCH_LOG("Environ UNSUPPORTED (#%u).\n", cmd);
return false;
}
return true;
}
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