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retroarch.c
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2021 - Daniel De Matteis
* Copyright (C) 2012-2015 - Michael Lelli
* Copyright (C) 2014-2017 - Jean-Andr� Santoni
* Copyright (C) 2016-2019 - Brad Parker
*
* 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/>.
*/
#ifdef _WIN32
#ifdef _XBOX
#include <xtl.h>
#else
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#if defined(DEBUG) && defined(HAVE_DRMINGW)
#include "exchndl.h"
#endif
#endif
#if defined(DINGUX)
#include <sys/types.h>
#include <unistd.h>
#endif
#if (defined(__linux__) || defined(__unix__) || defined(DINGUX)) && !defined(EMSCRIPTEN)
#include <signal.h>
#endif
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500 || defined(_XBOX)
#ifndef LEGACY_WIN32
#define LEGACY_WIN32
#endif
#endif
#if defined(_WIN32) && !defined(_XBOX) && !defined(__WINRT__)
#include <objbase.h>
#include <process.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include <locale.h>
#include <boolean.h>
#include <clamping.h>
#include <string/stdstring.h>
#include <dynamic/dylib.h>
#include <file/config_file.h>
#include <lists/string_list.h>
#include <memalign.h>
#include <retro_math.h>
#include <retro_timers.h>
#include <encodings/utf.h>
#include <time/rtime.h>
#include <libretro.h>
#define VFS_FRONTEND
#include <vfs/vfs_implementation.h>
#include <features/features_cpu.h>
#include <compat/strl.h>
#include <compat/strcasestr.h>
#include <compat/getopt.h>
#include <compat/posix_string.h>
#include <file/file_path.h>
#include <retro_miscellaneous.h>
#include <lists/dir_list.h>
#ifdef EMSCRIPTEN
#include <emscripten/emscripten.h>
#endif
#ifdef HAVE_LIBNX
#include <switch.h>
#include "switch_performance_profiles.h"
#endif
#if defined(ANDROID)
#include "play_feature_delivery/play_feature_delivery.h"
#endif
#ifdef HAVE_PRESENCE
#include "network/presence.h"
#endif
#ifdef HAVE_DISCORD
#include "network/discord.h"
#endif
#ifdef HAVE_MIST
#include "steam/steam.h"
#endif
#include "config.def.h"
#ifdef HAVE_MENU
#include "menu/menu_driver.h"
#endif
#include "location_driver.h"
#include "runloop.h"
#include "camera/camera_driver.h"
#include "location_driver.h"
#include "record/record_driver.h"
#ifdef HAVE_MICROPHONE
#include "audio/microphone_driver.h"
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_NETWORKING
#include <net/net_compat.h>
#include <net/net_socket.h>
#endif
#include <audio/audio_resampler.h>
#include "audio/audio_driver.h"
#ifdef HAVE_GFX_WIDGETS
#include "gfx/gfx_widgets.h"
#endif
#include "input/input_remapping.h"
#ifdef HAVE_CHEEVOS
#include "cheevos/cheevos.h"
#include "cheevos/cheevos_menu.h"
#endif
#ifdef HAVE_TRANSLATE
#include <encodings/base64.h>
#include <formats/rbmp.h>
#include <formats/rpng.h>
#include <formats/rjson.h>
#include "translation_defines.h"
#endif
#ifdef HAVE_NETWORKING
#include "network/netplay/netplay.h"
#include "network/netplay/netplay_private.h"
#ifdef HAVE_WIFI
#include "network/wifi_driver.h"
#endif
#ifdef HAVE_CLOUDSYNC
#include "network/cloud_sync_driver.h"
#endif
#endif
#ifdef HAVE_THREADS
#include <rthreads/rthreads.h>
#endif
#include "autosave.h"
#include "config.features.h"
#include "content.h"
#include "core_info.h"
#include "dynamic.h"
#include "defaults.h"
#include "driver.h"
#include "msg_hash.h"
#include "paths.h"
#include "file_path_special.h"
#include "ui/ui_companion_driver.h"
#include "verbosity.h"
#include "gfx/video_driver.h"
#include "gfx/video_display_server.h"
#ifdef HAVE_BLUETOOTH
#include "bluetooth/bluetooth_driver.h"
#endif
#include "misc/cpufreq/cpufreq.h"
#include "led/led_driver.h"
#include "midi_driver.h"
#include "core.h"
#include "configuration.h"
#include "list_special.h"
#ifdef HAVE_CHEATS
#include "cheat_manager.h"
#endif
#include "tasks/task_content.h"
#include "tasks/tasks_internal.h"
#include "version.h"
#include "version_git.h"
#include "retroarch.h"
#include "accessibility.h"
#if defined(HAVE_SDL) || defined(HAVE_SDL2) || defined(HAVE_SDL_DINGUX)
#include "SDL.h"
#endif
#ifdef HAVE_LAKKA
#include "lakka.h"
#endif
#define _PSUPP(var, name, desc) printf(" %s:\n\t\t%s: %s\n", name, desc, var ? "yes" : "no")
#define FAIL_CPU(simd_type) do { \
RARCH_ERR(simd_type " code is compiled in, but CPU does not support this feature. Cannot continue.\n"); \
retroarch_fail(1, "validate_cpu_features()"); \
} while (0)
#define FFMPEG_RECORD_ARG "r:"
#ifdef HAVE_DYNAMIC
#define DYNAMIC_ARG "L:"
#else
#define DYNAMIC_ARG
#endif
#ifdef HAVE_NETWORKING
#define NETPLAY_ARG "HC:F:"
#else
#define NETPLAY_ARG
#endif
#ifdef HAVE_CONFIGFILE
#define CONFIG_FILE_ARG "c:"
#else
#define CONFIG_FILE_ARG
#endif
#ifdef HAVE_BSV_MOVIE
#define BSV_MOVIE_ARG "P:R:M:"
#else
#define BSV_MOVIE_ARG
#endif
/* Griffin hack */
#ifdef HAVE_QT
#ifndef HAVE_MAIN
#define HAVE_MAIN
#endif
#endif
#define MIDI_DRIVER_BUF_SIZE 4096
#define MIDI_DRIVER_OFF "OFF"
/* Descriptive names for options without short variant.
*
* Please keep the name in sync with the option name.
* Order does not matter. */
enum
{
RA_OPT_MENU = 256, /* must be outside the range of a char */
RA_OPT_CHECK_FRAMES,
RA_OPT_PORT,
RA_OPT_SPECTATE,
RA_OPT_NICK,
RA_OPT_COMMAND,
RA_OPT_APPENDCONFIG,
RA_OPT_BPS,
RA_OPT_IPS,
RA_OPT_XDELTA,
RA_OPT_NO_PATCH,
RA_OPT_RECORDCONFIG,
RA_OPT_SUBSYSTEM,
RA_OPT_SIZE,
RA_OPT_FEATURES,
RA_OPT_VERSION,
RA_OPT_EOF_EXIT,
RA_OPT_LOG_FILE,
RA_OPT_MAX_FRAMES,
RA_OPT_MAX_FRAMES_SCREENSHOT,
RA_OPT_MAX_FRAMES_SCREENSHOT_PATH,
RA_OPT_SET_SHADER,
RA_OPT_DATABASE_SCAN,
RA_OPT_ACCESSIBILITY,
RA_OPT_LOAD_MENU_ON_ERROR
};
/* DRIVERS */
#ifdef HAVE_BLUETOOTH
extern const bluetooth_driver_t *bluetooth_drivers[];
#endif
/* MAIN GLOBAL VARIABLES */
struct rarch_state
{
char *connect_host; /* Netplay hostname passed from CLI */
char *connect_mitm_id; /* Netplay MITM address from CLI */
struct retro_perf_counter *perf_counters_rarch[MAX_COUNTERS];
#ifdef HAVE_THREAD_STORAGE
sthread_tls_t rarch_tls; /* unsigned alignment */
#endif
unsigned perf_ptr_rarch;
uint32_t flags;
char launch_arguments[4096];
char path_default_shader_preset[PATH_MAX_LENGTH];
char path_content[PATH_MAX_LENGTH];
char path_libretro[PATH_MAX_LENGTH];
char path_config_file[PATH_MAX_LENGTH];
char path_config_append_file[PATH_MAX_LENGTH];
char path_config_override_file[PATH_MAX_LENGTH];
char path_core_options_file[PATH_MAX_LENGTH];
char dir_system[DIR_MAX_LENGTH];
char dir_savefile[DIR_MAX_LENGTH];
char dir_savestate[DIR_MAX_LENGTH];
};
/* Forward declarations */
#ifdef HAVE_LIBNX
void libnx_apply_overclock(void);
#endif
static struct rarch_state rarch_st = {0};
#ifdef HAVE_THREAD_STORAGE
static const void *MAGIC_POINTER = (void*)(uintptr_t)0x0DEFACED;
#endif
static access_state_t access_state_st = {0};
static struct global global_driver_st = {0}; /* retro_time_t alignment */
static void retro_frame_null(const void *data, unsigned width,
unsigned height, size_t pitch) { }
void retro_input_poll_null(void) { }
static location_driver_t location_null = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"null",
};
static const location_driver_t *location_drivers[] = {
#ifdef ANDROID
&location_android,
#endif
&location_null,
NULL,
};
static location_driver_state_t location_driver_st = {0};
location_driver_state_t *location_state_get_ptr(void)
{
return &location_driver_st;
}
const char *config_get_location_driver_options(void)
{
return char_list_new_special(STRING_LIST_LOCATION_DRIVERS, NULL);
}
static void location_driver_find_driver(
settings_t *settings,
location_driver_state_t *location_st,
const char *prefix,
bool verbosity_enabled)
{
int i = (int)driver_find_index(
"location_driver",
settings->arrays.location_driver);
if (i >= 0)
location_st->driver = (const location_driver_t*)
location_drivers[i];
else
{
if (verbosity_enabled)
{
unsigned d;
RARCH_ERR("Couldn't find any %s named \"%s\"\n", prefix,
settings->arrays.location_driver);
RARCH_LOG_OUTPUT("Available %ss are:\n", prefix);
for (d = 0; location_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", location_drivers[d]->ident);
RARCH_WARN("Going to default to first %s...\n", prefix);
}
location_st->driver = (const location_driver_t*)location_drivers[0];
}
}
bool driver_location_start(void)
{
location_driver_state_t
*location_st = &location_driver_st;
if ( location_st
&& location_st->data
&& location_st->driver
&& location_st->driver->start)
{
settings_t *settings = config_get_ptr();
bool location_allow = settings->bools.location_allow;
if (location_allow)
return location_st->driver->start(location_st->data);
/* TODO/FIXME - localize */
runloop_msg_queue_push(
"Location is explicitly disabled.\n",
STRLEN_CONST("Location is explicitly disabled.\n"),
1, 180, true, NULL, MESSAGE_QUEUE_ICON_DEFAULT,
MESSAGE_QUEUE_CATEGORY_INFO);
}
return false;
}
void driver_location_stop(void)
{
location_driver_state_t
*location_st = &location_driver_st;
if ( location_st
&& location_st->driver
&& location_st->driver->stop
&& location_st->data)
location_st->driver->stop(location_st->data);
}
void driver_location_set_interval(unsigned interval_msecs,
unsigned interval_distance)
{
location_driver_state_t
*location_st = &location_driver_st;
if ( location_st
&& location_st->driver
&& location_st->driver->set_interval
&& location_st->data)
location_st->driver->set_interval(location_st->data,
interval_msecs, interval_distance);
}
bool driver_location_get_position(double *lat, double *lon,
double *horiz_accuracy, double *vert_accuracy)
{
location_driver_state_t
*location_st = &location_driver_st;
if ( location_st
&& location_st->driver
&& location_st->driver->get_position
&& location_st->data)
return location_st->driver->get_position(location_st->data,
lat, lon, horiz_accuracy, vert_accuracy);
*lat = 0.0;
*lon = 0.0;
*horiz_accuracy = 0.0;
*vert_accuracy = 0.0;
return false;
}
static bool init_location(
void *data,
location_driver_state_t *location_st,
settings_t *settings,
bool verbosity_enabled)
{
/* Resource leaks will follow if location
interface is initialized twice. */
if (!location_st->data)
{
rarch_system_info_t *sys_info = (rarch_system_info_t*)data;
location_driver_find_driver(settings,
&location_driver_st,
"location driver", verbosity_enabled);
if (!(location_st->data = location_st->driver->init()))
{
RARCH_ERR("Failed to initialize location driver. Will continue without location.\n");
return false;
}
if (sys_info->location_cb.initialized)
sys_info->location_cb.initialized();
}
return true;
}
static void uninit_location(void *data, location_driver_state_t *location_st)
{
if (location_st->data && location_st->driver)
{
rarch_system_info_t *sys_info = (rarch_system_info_t*)data;
if (sys_info->location_cb.deinitialized)
sys_info->location_cb.deinitialized();
if (location_st->driver->free)
location_st->driver->free(location_st->data);
}
location_st->active = false;
location_st->data = NULL;
}
static void *rarch_midi_drv_data;
static struct string_list *rarch_midi_drv_inputs;
static struct string_list *rarch_midi_drv_outputs;
static uint8_t *rarch_midi_drv_input_buffer;
static uint8_t *rarch_midi_drv_output_buffer;
static midi_event_t rarch_midi_drv_input_event; /* ptr alignment */
static midi_event_t rarch_midi_drv_output_event; /* ptr alignment */
static bool rarch_midi_drv_input_enabled;
static bool rarch_midi_drv_output_enabled;
static bool rarch_midi_drv_output_pending;
static void null_midi_free(void *p) { }
static void *null_midi_init(const char *input, const char *output) { return (void*)-1; }
static bool null_midi_get_avail_inputs(struct string_list *inputs) { union string_list_elem_attr attr = {0}; return string_list_append(inputs, "Null", attr); }
static bool null_midi_get_avail_outputs(struct string_list *outputs) { union string_list_elem_attr attr = {0}; return string_list_append(outputs, "Null", attr); }
static bool null_midi_set_input(void *p, const char *input) { return input == NULL || string_is_equal(input, "Null"); }
static bool null_midi_set_output(void *p, const char *output) { return output == NULL || string_is_equal(output, "Null"); }
static bool null_midi_read(void *p, midi_event_t *event) { return false; }
static bool null_midi_write(void *p, const midi_event_t *event) { return true; }
static bool null_midi_flush(void *p) { return true; }
static midi_driver_t midi_null = {
"null",
null_midi_get_avail_inputs,
null_midi_get_avail_outputs,
null_midi_init,
null_midi_free,
null_midi_set_input,
null_midi_set_output,
null_midi_read,
null_midi_write,
null_midi_flush
};
static midi_driver_t *midi_drv = &midi_null;
midi_driver_t *midi_drivers[] = {
#if defined(HAVE_ALSA) && !defined(HAVE_HAKCHI) && !defined(HAVE_SEGAM) && !defined(DINGUX)
&midi_alsa,
#endif
#ifdef HAVE_WINMM
&midi_winmm,
#endif
&midi_null
};
static midi_driver_t *midi_driver_find_driver(const char *ident)
{
unsigned i;
for (i = 0; i < ARRAY_SIZE(midi_drivers); ++i)
{
if (string_is_equal(midi_drivers[i]->ident, ident))
return midi_drivers[i];
}
RARCH_ERR("[MIDI]: Unknown driver \"%s\", falling back to \"null\" driver.\n", ident);
return &midi_null;
}
static const void *midi_driver_find_handle(int index)
{
if (index < 0 || index >= (int)ARRAY_SIZE(midi_drivers))
return NULL;
return midi_drivers[index];
}
struct string_list *midi_driver_get_avail_inputs(void)
{
return rarch_midi_drv_inputs;
}
struct string_list *midi_driver_get_avail_outputs(void)
{
return rarch_midi_drv_outputs;
}
bool midi_driver_set_all_sounds_off(void)
{
midi_event_t event;
uint8_t i;
uint8_t data[3] = { 0xB0, 120, 0 };
bool result = true;
if (!rarch_midi_drv_data || !rarch_midi_drv_output_enabled)
return false;
#ifdef HAVE_WASAPI
/* FIXME: Due to some mysterious reason Frame Delay does not
* work with WASAPI unless MIDI output is active, even when
* MIDI is not used. Frame Delay also breaks if MIDI sounds
* are "set off", which happens on menu toggle, therefore
* skip this if WASAPI is used and Frame Delay is active.. */
if (string_is_equal(audio_state_get_ptr()->current_audio->ident, "wasapi"))
{
if (video_state_get_ptr()->frame_delay_target > 0)
return false;
}
#endif
event.data = data;
event.data_size = sizeof(data);
event.delta_time = 0;
for (i = 0; i < 16; ++i)
{
data[0] = 0xB0 | i;
if (!midi_drv->write(rarch_midi_drv_data, &event))
result = false;
}
if (!midi_drv->flush(rarch_midi_drv_data))
result = false;
if (!result)
RARCH_ERR("[MIDI]: All sounds off failed.\n");
return result;
}
bool midi_driver_set_volume(unsigned volume)
{
midi_event_t event;
uint8_t data[8] = {
0xF0, 0x7F, 0x7F, 0x04, 0x01, 0, 0, 0xF7};
if (!rarch_midi_drv_data || !rarch_midi_drv_output_enabled)
return false;
volume = (unsigned)(163.83 * volume + 0.5);
if (volume > 16383)
volume = 16383;
data[5] = (uint8_t)(volume & 0x7F);
data[6] = (uint8_t)(volume >> 7);
event.data = data;
event.data_size = sizeof(data);
event.delta_time = 0;
if (!midi_drv->write(rarch_midi_drv_data, &event))
{
RARCH_ERR("[MIDI]: Volume change failed.\n");
return false;
}
return true;
}
static bool midi_driver_init_io_buffers(void)
{
uint8_t *midi_drv_input_buffer = (uint8_t*)malloc(MIDI_DRIVER_BUF_SIZE);
uint8_t *midi_drv_output_buffer = (uint8_t*)malloc(MIDI_DRIVER_BUF_SIZE);
if (!midi_drv_input_buffer || !midi_drv_output_buffer)
{
if (midi_drv_input_buffer)
free(midi_drv_input_buffer);
if (midi_drv_output_buffer)
free(midi_drv_output_buffer);
return false;
}
rarch_midi_drv_input_buffer = midi_drv_input_buffer;
rarch_midi_drv_output_buffer = midi_drv_output_buffer;
rarch_midi_drv_input_event.data = midi_drv_input_buffer;
rarch_midi_drv_input_event.data_size = 0;
rarch_midi_drv_output_event.data = midi_drv_output_buffer;
rarch_midi_drv_output_event.data_size = 0;
return true;
}
static void midi_driver_free(void)
{
if (rarch_midi_drv_data)
{
midi_drv->free(rarch_midi_drv_data);
rarch_midi_drv_data = NULL;
}
if (rarch_midi_drv_inputs)
{
string_list_free(rarch_midi_drv_inputs);
rarch_midi_drv_inputs = NULL;
}
if (rarch_midi_drv_outputs)
{
string_list_free(rarch_midi_drv_outputs);
rarch_midi_drv_outputs = NULL;
}
if (rarch_midi_drv_input_buffer)
{
free(rarch_midi_drv_input_buffer);
rarch_midi_drv_input_buffer = NULL;
}
if (rarch_midi_drv_output_buffer)
{
free(rarch_midi_drv_output_buffer);
rarch_midi_drv_output_buffer = NULL;
}
rarch_midi_drv_input_enabled = false;
rarch_midi_drv_output_enabled = false;
}
static bool midi_driver_init(void *data)
{
union string_list_elem_attr
attr = {0};
bool ret = true;
settings_t *settings = (settings_t*)data;
rarch_midi_drv_inputs = string_list_new();
rarch_midi_drv_outputs = string_list_new();
if (!rarch_midi_drv_inputs || !rarch_midi_drv_outputs)
ret = false;
else if (!string_list_append(rarch_midi_drv_inputs, MIDI_DRIVER_OFF, attr) ||
!string_list_append(rarch_midi_drv_outputs, MIDI_DRIVER_OFF, attr))
ret = false;
else
{
char * input = NULL;
char * output = NULL;
midi_drv = midi_driver_find_driver(
settings->arrays.midi_driver);
if (strcmp(midi_drv->ident, settings->arrays.midi_driver))
{
configuration_set_string(settings,
settings->arrays.midi_driver, midi_drv->ident);
}
if (!midi_drv->get_avail_inputs(rarch_midi_drv_inputs))
ret = false;
else if (!midi_drv->get_avail_outputs(rarch_midi_drv_outputs))
ret = false;
else
{
if (string_is_not_equal(settings->arrays.midi_input, MIDI_DRIVER_OFF))
{
if (string_list_find_elem(rarch_midi_drv_inputs, settings->arrays.midi_input))
input = settings->arrays.midi_input;
else
{
RARCH_WARN("[MIDI]: Input device \"%s\" unavailable.\n",
settings->arrays.midi_input);
configuration_set_string(settings,
settings->arrays.midi_input, MIDI_DRIVER_OFF);
}
}
if (string_is_not_equal(settings->arrays.midi_output, MIDI_DRIVER_OFF))
{
if (string_list_find_elem(rarch_midi_drv_outputs, settings->arrays.midi_output))
output = settings->arrays.midi_output;
else
{
RARCH_WARN("[MIDI]: Output device \"%s\" unavailable.\n",
settings->arrays.midi_output);
configuration_set_string(settings,
settings->arrays.midi_output, MIDI_DRIVER_OFF);
}
}
rarch_midi_drv_data = midi_drv->init(input, output);
if (!rarch_midi_drv_data)
ret = false;
else
{
rarch_midi_drv_input_enabled = (input != NULL);
rarch_midi_drv_output_enabled = (output != NULL);
if (!midi_driver_init_io_buffers())
ret = false;
else
{
if (input)
RARCH_LOG("[MIDI]: Input device: \"%s\".\n", input);
if (output)
{
RARCH_LOG("[MIDI]: Output device: \"%s\".\n", output);
midi_driver_set_volume(settings->uints.midi_volume);
}
}
}
}
}
if (!ret)
{
midi_driver_free();
RARCH_ERR("[MIDI]: Initialization failed.\n");
return false;
}
return true;
}
bool midi_driver_set_input(const char *input)
{
if (!rarch_midi_drv_data)
{
#ifdef DEBUG
RARCH_ERR("[MIDI]: midi_driver_set_input called on uninitialized driver.\n");
#endif
return false;
}
if (string_is_equal(input, MIDI_DRIVER_OFF))
input = NULL;
if (!midi_drv->set_input(rarch_midi_drv_data, input))
{
if (input)
RARCH_ERR("[MIDI]: Failed to change input device to \"%s\".\n", input);
else
RARCH_ERR("[MIDI]: Failed to disable input.\n");
return false;
}
if (input)
RARCH_LOG("[MIDI]: Input device changed to \"%s\".\n", input);
else
RARCH_LOG("[MIDI]: Input disabled.\n");
rarch_midi_drv_input_enabled = input != NULL;
return true;
}
bool midi_driver_set_output(void *settings_data, const char *output)
{
settings_t *settings = (settings_t*)settings_data;
if (!rarch_midi_drv_data)
{
#ifdef DEBUG
RARCH_ERR("[MIDI]: midi_driver_set_output called on uninitialized driver.\n");
#endif
return false;
}
if (string_is_equal(output, MIDI_DRIVER_OFF))
output = NULL;
if (!midi_drv->set_output(rarch_midi_drv_data, output))
{
if (output)
RARCH_ERR("[MIDI]: Failed to change output device to \"%s\".\n", output);
else
RARCH_ERR("[MIDI]: Failed to disable output.\n");
return false;
}
if (output)
{
rarch_midi_drv_output_enabled = true;
RARCH_LOG("[MIDI]: Output device changed to \"%s\".\n", output);
midi_driver_set_volume(settings->uints.midi_volume);
}
else
{
rarch_midi_drv_output_enabled = false;
RARCH_LOG("[MIDI]: Output disabled.\n");
}
return true;
}
bool midi_driver_input_enabled(void)
{
return rarch_midi_drv_input_enabled;
}
bool midi_driver_output_enabled(void)
{
return rarch_midi_drv_output_enabled;
}
bool midi_driver_read(uint8_t *byte)
{
static int i = 0;
if (!rarch_midi_drv_data || !rarch_midi_drv_input_enabled || !byte)
{
#ifdef DEBUG
if (!rarch_midi_drv_data)
RARCH_ERR("[MIDI]: midi_driver_read called on uninitialized driver.\n");
else if (!rarch_midi_drv_input_enabled)
RARCH_ERR("[MIDI]: midi_driver_read called when input is disabled.\n");
else
RARCH_ERR("[MIDI]: midi_driver_read called with null pointer.\n");
#endif
return false;
}
if (i == (int)rarch_midi_drv_input_event.data_size)
{
rarch_midi_drv_input_event.data_size = MIDI_DRIVER_BUF_SIZE;
if (!midi_drv->read(rarch_midi_drv_data, &rarch_midi_drv_input_event))
{
rarch_midi_drv_input_event.data_size = i;
return false;
}
i = 0;
#ifdef DEBUG
if (rarch_midi_drv_input_event.data_size == 1)
RARCH_LOG("[MIDI]: In [0x%02X].\n",
rarch_midi_drv_input_event.data[0]);
else if (rarch_midi_drv_input_event.data_size == 2)
RARCH_LOG("[MIDI]: In [0x%02X, 0x%02X].\n",
rarch_midi_drv_input_event.data[0],
rarch_midi_drv_input_event.data[1]);
else if (rarch_midi_drv_input_event.data_size == 3)
RARCH_LOG("[MIDI]: In [0x%02X, 0x%02X, 0x%02X].\n",
rarch_midi_drv_input_event.data[0],
rarch_midi_drv_input_event.data[1],
rarch_midi_drv_input_event.data[2]);
else
RARCH_LOG("[MIDI]: In [0x%02X, ...], size %u.\n",
rarch_midi_drv_input_event.data[0],
rarch_midi_drv_input_event.data_size);
#endif
}
*byte = rarch_midi_drv_input_event.data[i++];
return true;
}
bool midi_driver_write(uint8_t byte, uint32_t delta_time)
{
static int event_size;
if (!rarch_midi_drv_data || !rarch_midi_drv_output_enabled)
{
#ifdef DEBUG
if (!rarch_midi_drv_data)
RARCH_ERR("[MIDI]: midi_driver_write called on uninitialized driver.\n");
else
RARCH_ERR("[MIDI]: midi_driver_write called when output is disabled.\n");
#endif
return false;
}
if (byte >= 0x80)
{
if ( rarch_midi_drv_output_event.data_size
&& rarch_midi_drv_output_event.data[0] == 0xF0)
{
if (byte == 0xF7)
event_size = (int)rarch_midi_drv_output_event.data_size + 1;
else
{
if (!midi_drv->write(rarch_midi_drv_data,
&rarch_midi_drv_output_event))
return false;
#ifdef DEBUG
switch (rarch_midi_drv_output_event.data_size)
{
case 1:
RARCH_LOG("[MIDI]: Out [0x%02X].\n",
rarch_midi_drv_output_event.data[0]);
break;
case 2:
RARCH_LOG("[MIDI]: Out [0x%02X, 0x%02X].\n",