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486 lines
10 KiB
C
486 lines
10 KiB
C
/* SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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*
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* Some code herein may be based on code found in BSNES.
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*
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* SSNES is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with SSNES.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __SSNES_GENERAL_H
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#define __SSNES_GENERAL_H
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#include "boolean.h"
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#include <stdio.h>
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#include <time.h>
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#include <limits.h>
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#include <setjmp.h>
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#include "driver.h"
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#include "record/ffemu.h"
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#include "message.h"
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#include "rewind.h"
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#include "movie.h"
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#include "autosave.h"
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#include "dynamic.h"
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#include "cheats.h"
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#include "audio/ext/ssnes_dsp.h"
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#include "strl.h"
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#ifdef __CELLOS_LV2__
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#include <sys/timer.h>
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#endif
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#ifdef XENON
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#include <time/time.h>
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#endif
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#if defined(XENON) || defined(__CELLOS_LV2__)
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#undef PATH_MAX
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#define PATH_MAX 4096
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_NETPLAY
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#include "netplay.h"
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#endif
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#include "audio/hermite.h"
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#if defined(_WIN32) && !defined(_XBOX)
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include "msvc/msvc_compat.h"
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#elif defined(_XBOX)
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#include <xtl.h>
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#include "360/msvc_compat.h"
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#endif
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#define MAX_PLAYERS 5
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enum ssnes_shader_type
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{
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SSNES_SHADER_CG,
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SSNES_SHADER_BSNES,
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SSNES_SHADER_AUTO,
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SSNES_SHADER_NONE
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};
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// All config related settings go here.
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struct settings
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{
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struct
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{
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char driver[32];
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float xscale;
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float yscale;
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bool fullscreen;
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unsigned fullscreen_x;
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unsigned fullscreen_y;
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bool vsync;
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bool smooth;
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bool force_aspect;
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bool crop_overscan;
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float aspect_ratio;
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char cg_shader_path[PATH_MAX];
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char bsnes_shader_path[PATH_MAX];
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char filter_path[PATH_MAX];
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enum ssnes_shader_type shader_type;
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float refresh_rate;
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bool render_to_texture;
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float fbo_scale_x;
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float fbo_scale_y;
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char second_pass_shader[PATH_MAX];
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bool second_pass_smooth;
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char shader_dir[PATH_MAX];
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char font_path[PATH_MAX];
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unsigned font_size;
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bool font_enable;
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bool font_scale;
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float msg_pos_x;
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float msg_pos_y;
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float msg_color_r;
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float msg_color_g;
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float msg_color_b;
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bool force_16bit;
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bool disable_composition;
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bool hires_record;
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bool post_filter_record;
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char external_driver[PATH_MAX];
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} video;
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struct
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{
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char driver[32];
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bool enable;
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unsigned out_rate;
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float in_rate;
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float rate_step;
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char device[PATH_MAX];
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unsigned latency;
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bool sync;
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char dsp_plugin[PATH_MAX];
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char external_driver[PATH_MAX];
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} audio;
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struct
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{
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char driver[32];
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struct snes_keybind binds[MAX_PLAYERS][SSNES_BIND_LIST_END];
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float axis_threshold;
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int joypad_map[MAX_PLAYERS];
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bool netplay_client_swap_input;
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} input;
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char libsnes[PATH_MAX];
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char cheat_database[PATH_MAX];
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char cheat_settings_path[PATH_MAX];
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char screenshot_directory[PATH_MAX];
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bool rewind_enable;
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size_t rewind_buffer_size;
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unsigned rewind_granularity;
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bool pause_nonactive;
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unsigned autosave_interval;
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bool block_sram_overwrite;
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bool savestate_auto_index;
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};
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// Settings and/or global state that is specific to a console-style implementation.
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#ifdef SSNES_CONSOLE
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struct console_settings
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{
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bool block_config_read;
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bool ingame_menu_enable;
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bool return_to_multiman_enable;
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bool screenshots_enable;
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bool throttle_enable;
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bool triple_buffering_enable;
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uint32_t screen_orientation;
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uint32_t current_resolution_index;
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uint32_t current_resolution_id;
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uint32_t initial_resolution_id;
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uint32_t *supported_resolutions;
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uint32_t supported_resolutions_count;
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char rom_path[PATH_MAX];
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char default_rom_startup_dir[PATH_MAX];
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char default_savestate_dir[PATH_MAX];
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char default_sram_dir[PATH_MAX];
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};
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#endif
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enum ssnes_game_type
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{
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SSNES_CART_NORMAL = 0,
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SSNES_CART_SGB,
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SSNES_CART_BSX,
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SSNES_CART_BSX_SLOTTED,
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SSNES_CART_SUFAMI
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};
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// All run-time- / command line flag-related globals go here.
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struct global
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{
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bool verbose;
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bool audio_active;
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bool video_active;
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bool force_fullscreen;
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bool has_mouse[2];
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bool has_scope[2];
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bool has_justifier;
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bool has_justifiers;
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bool has_multitap;
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bool disconnect_device[2];
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FILE *rom_file;
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enum ssnes_game_type game_type;
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uint32_t cart_crc;
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char gb_rom_path[PATH_MAX];
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char bsx_rom_path[PATH_MAX];
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char sufami_rom_path[2][PATH_MAX];
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bool has_set_save_path;
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bool has_set_state_path;
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#ifdef HAVE_CONFIGFILE
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char config_path[PATH_MAX];
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#endif
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char basename[PATH_MAX];
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char savefile_name_srm[PATH_MAX];
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char savefile_name_rtc[PATH_MAX]; // Make sure that fill_pathname has space.
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char savefile_name_psrm[PATH_MAX];
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char savefile_name_asrm[PATH_MAX];
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char savefile_name_bsrm[PATH_MAX];
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char savestate_name[PATH_MAX];
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char xml_name[PATH_MAX];
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bool ups_pref;
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bool bps_pref;
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char ups_name[PATH_MAX];
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char bps_name[PATH_MAX];
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unsigned state_slot;
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struct
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{
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struct snes_geometry geom;
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unsigned pitch; // If 0, has classic libsnes semantics.
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char fullpath[PATH_MAX];
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struct snes_system_timing timing;
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bool timing_set;
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bool need_fullpath;
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} system;
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struct
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{
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hermite_resampler_t *source;
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float *data;
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size_t data_ptr;
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size_t chunk_size;
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size_t nonblock_chunk_size;
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size_t block_chunk_size;
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double src_ratio;
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bool use_float;
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bool mute;
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float *outsamples;
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int16_t *conv_outsamples;
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int16_t *rewind_buf;
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size_t rewind_ptr;
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size_t rewind_size;
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dylib_t dsp_lib;
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const ssnes_dsp_plugin_t *dsp_plugin;
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void *dsp_handle;
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} audio_data;
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struct
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{
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bool active;
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uint32_t *buffer;
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uint32_t *colormap;
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unsigned pitch;
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dylib_t lib;
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unsigned scale;
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void (*psize)(unsigned *width, unsigned *height);
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void (*prender)(uint32_t *colormap, uint32_t *output, unsigned outpitch,
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const uint16_t *input, unsigned pitch, unsigned width, unsigned height);
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} filter;
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msg_queue_t *msg_queue;
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// Rewind support.
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state_manager_t *state_manager;
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void *state_buf;
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size_t state_size;
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bool frame_is_reverse;
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// Movie playback/recording support.
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struct
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{
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bsv_movie_t *movie;
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char movie_path[PATH_MAX];
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bool movie_playback;
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// Immediate playback/recording.
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char movie_start_path[PATH_MAX];
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bool movie_start_recording;
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bool movie_start_playback;
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bool movie_end;
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} bsv;
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bool sram_load_disable;
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bool sram_save_disable;
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bool use_sram;
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// Pausing support
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bool is_paused;
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bool is_oneshot;
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// Autosave support.
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autosave_t *autosave[2];
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// Netplay.
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#ifdef HAVE_NETPLAY
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netplay_t *netplay;
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char netplay_server[PATH_MAX];
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bool netplay_enable;
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bool netplay_is_client;
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bool netplay_is_spectate;
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unsigned netplay_sync_frames;
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uint16_t netplay_port;
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char netplay_nick[32];
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#endif
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// FFmpeg record.
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#ifdef HAVE_FFMPEG
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ffemu_t *rec;
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char record_path[PATH_MAX];
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bool recording;
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unsigned record_width;
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unsigned record_height;
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#endif
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struct
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{
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const uint16_t *data;
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unsigned width;
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unsigned height;
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} frame_cache;
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char title_buf[64];
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struct
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{
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char **elems;
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size_t size;
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size_t ptr;
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} shader_dir;
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char sha256[64 + 1];
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#ifdef HAVE_XML
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cheat_manager_t *cheat;
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#endif
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bool error_in_init;
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char error_string[1024];
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jmp_buf error_sjlj_context;
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};
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void config_load(void);
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void config_set_defaults(void);
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#ifdef HAVE_CONFIGFILE
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bool config_load_file(const char *path);
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#endif
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void ssnes_main_clear_state(void);
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int ssnes_main_init(int argc, char *argv[]);
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bool ssnes_main_iterate(void);
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void ssnes_main_deinit(void);
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void ssnes_render_cached_frame(void);
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extern struct settings g_settings;
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extern struct global g_extern;
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#ifdef SSNES_CONSOLE
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extern struct console_settings g_console;
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#endif
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#define SSNES_LOG(...) do { \
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if (g_extern.verbose) \
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fprintf(stderr, "SSNES: " __VA_ARGS__); \
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fflush(stderr); \
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} while (0)
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#define SSNES_ERR(...) do { \
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fprintf(stderr, "SSNES [ERROR] :: " __VA_ARGS__); \
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fflush(stderr); \
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} while (0)
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#define SSNES_WARN(...) do { \
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fprintf(stderr, "SSNES [WARN] :: " __VA_ARGS__); \
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fflush(stderr); \
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} while (0)
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#ifndef max
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#define max(a, b) ((a) > (b) ? (a) : (b))
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#endif
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#ifndef min
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#define min(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#define SSNES_SCALE_BASE 256
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static inline uint32_t next_pow2(uint32_t v)
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{
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v--;
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v |= v >> 1;
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v |= v >> 2;
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v |= v >> 4;
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v |= v >> 8;
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v |= v >> 16;
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v++;
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return v;
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}
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static inline uint8_t is_little_endian(void)
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{
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union
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{
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uint16_t x;
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uint8_t y[2];
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} u;
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u.x = 1;
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return u.y[0];
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}
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#ifdef GEKKO
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#include <unistd.h>
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#endif
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static inline void ssnes_sleep(unsigned msec)
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{
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#ifdef __CELLOS_LV2__
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sys_timer_usleep(1000 * msec);
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#elif defined(_WIN32)
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Sleep(msec);
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#elif defined(XENON)
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udelay(1000 * msec);
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#elif defined(GEKKO)
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usleep(1000 * msec);
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#else
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struct timespec tv = {0};
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tv.tv_sec = msec / 1000;
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tv.tv_nsec = (msec % 1000) * 1000000;
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nanosleep(&tv, NULL);
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#endif
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}
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#define ssnes_assert(cond) \
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if (!(cond)) { SSNES_ERR("Assertion failed at %s:%d!\n", __FILE__, __LINE__); exit(2); }
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static inline void ssnes_fail(int error_code, const char *error)
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{
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// We cannot longjmp unless we're in ssnes_main_init().
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// If not, something went very wrong, and we should just exit right away.
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ssnes_assert(g_extern.error_in_init);
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strlcpy(g_extern.error_string, error, sizeof(g_extern.error_string));
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longjmp(g_extern.error_sjlj_context, error_code);
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}
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#endif
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