| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
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| 2 | * Mupen64plus - savestates.c * |
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| 3 | * Mupen64Plus homepage: https://mupen64plus.org/ * |
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| 4 | * Copyright (C) 2012 CasualJames * |
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| 5 | * Copyright (C) 2009 Olejl Tillin9 * |
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| 6 | * Copyright (C) 2008 Richard42 Tillin9 * |
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| 7 | * Copyright (C) 2002 Hacktarux * |
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| 8 | * * |
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| 9 | * This program is free software; you can redistribute it and/or modify * |
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| 10 | * it under the terms of the GNU General Public License as published by * |
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| 11 | * the Free Software Foundation; either version 2 of the License, or * |
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| 12 | * (at your option) any later version. * |
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| 13 | * * |
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| 14 | * This program is distributed in the hope that it will be useful, * |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 17 | * GNU General Public License for more details. * |
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| 18 | * * |
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| 19 | * You should have received a copy of the GNU General Public License * |
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| 20 | * along with this program; if not, write to the * |
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| 21 | * Free Software Foundation, Inc., * |
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| 22 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
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| 23 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
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| 24 | |
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| 25 | #include <SDL.h> |
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| 26 | #include <SDL_thread.h> |
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| 27 | #include <stddef.h> |
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| 28 | #include <stdint.h> |
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| 29 | #include <stdio.h> |
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| 30 | #include <stdlib.h> |
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| 31 | #include <string.h> |
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| 32 | #include <sys/types.h> |
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| 33 | #include <zlib.h> |
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| 34 | #include <unzip.h> |
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| 35 | #include <zip.h> |
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| 36 | |
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| 37 | #define M64P_CORE_PROTOTYPES 1 |
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| 38 | #include "api/callbacks.h" |
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| 39 | #include "api/config.h" |
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| 40 | #include "api/m64p_config.h" |
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| 41 | #include "api/m64p_types.h" |
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| 42 | #include "backends/api/storage_backend.h" |
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| 43 | #include "device/device.h" |
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| 44 | #include "main/list.h" |
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| 45 | #include "main/main.h" |
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| 46 | #include "osal/preproc.h" |
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| 47 | #include "osd/osd.h" |
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| 48 | #include "plugin/plugin.h" |
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| 49 | #include "rom.h" |
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| 50 | #include "savestates.h" |
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| 51 | #include "util.h" |
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| 52 | #include "workqueue.h" |
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| 53 | |
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| 54 | enum { GB_CART_FINGERPRINT_SIZE = 0x1c }; |
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| 55 | enum { GB_CART_FINGERPRINT_OFFSET = 0x134 }; |
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| 56 | |
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| 57 | enum { DD_DISK_ID_OFFSET = 0x43670 }; |
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| 58 | |
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| 59 | static const char* savestate_magic = "M64+SAVE" ; |
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| 60 | static const int savestate_latest_version = 0x00010500; /* 1.5 */ |
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| 61 | static const unsigned char pj64_magic[4] = { 0xC8, 0xA6, 0xD8, 0x23 }; |
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| 62 | |
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| 63 | static savestates_job job = savestates_job_nothing; |
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| 64 | static savestates_type type = savestates_type_unknown; |
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| 65 | static char *fname = NULL; |
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| 66 | |
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| 67 | static unsigned int slot = 0; |
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| 68 | static int autoinc_save_slot = 0; |
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| 69 | |
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| 70 | static SDL_mutex *savestates_lock; |
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| 71 | |
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| 72 | struct savestate_work { |
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| 73 | char *filepath; |
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| 74 | char *data; |
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| 75 | size_t size; |
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| 76 | struct work_struct work; |
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| 77 | }; |
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| 78 | |
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| 79 | /* Returns the malloc'd full path of the currently selected savestate. */ |
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| 80 | static char *savestates_generate_path(savestates_type type) |
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| 81 | { |
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| 82 | if(fname != NULL) /* A specific path was given. */ |
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| 83 | { |
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| 84 | return strdup(fname); |
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| 85 | } |
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| 86 | else /* Use the selected savestate slot */ |
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| 87 | { |
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| 88 | char *filename; |
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| 89 | switch (type) |
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| 90 | { |
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| 91 | case savestates_type_m64p: |
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| 92 | filename = formatstr("%s.st%d" , ROM_SETTINGS.goodname, slot); |
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| 93 | break; |
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| 94 | case savestates_type_pj64_zip: |
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| 95 | filename = formatstr("%s.pj%d.zip" , ROM_PARAMS.headername, slot); |
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| 96 | break; |
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| 97 | case savestates_type_pj64_unc: |
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| 98 | filename = formatstr("%s.pj%d" , ROM_PARAMS.headername, slot); |
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| 99 | break; |
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| 100 | default: |
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| 101 | filename = NULL; |
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| 102 | break; |
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| 103 | } |
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| 104 | |
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| 105 | if (filename != NULL) |
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| 106 | { |
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| 107 | char *filepath = formatstr("%s%s" , get_savestatepath(), filename); |
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| 108 | free(filename); |
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| 109 | return filepath; |
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| 110 | } |
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| 111 | else |
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| 112 | return NULL; |
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| 113 | } |
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| 114 | } |
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| 115 | |
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| 116 | void savestates_select_slot(unsigned int s) |
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| 117 | { |
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| 118 | if(s>9||s==slot) |
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| 119 | return; |
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| 120 | slot = s; |
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| 121 | ConfigSetParameter(g_CoreConfig, "CurrentStateSlot" , M64TYPE_INT, &s); |
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| 122 | StateChanged(M64CORE_SAVESTATE_SLOT, slot); |
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| 123 | |
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| 124 | main_message(M64MSG_STATUS, OSD_BOTTOM_LEFT, "Selected state slot: %d" , slot); |
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| 125 | } |
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| 126 | |
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| 127 | /* Returns the currently selected save slot. */ |
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| 128 | unsigned int savestates_get_slot(void) |
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| 129 | { |
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| 130 | return slot; |
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| 131 | } |
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| 132 | |
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| 133 | /* Sets save state slot autoincrement on or off. */ |
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| 134 | void savestates_set_autoinc_slot(int b) |
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| 135 | { |
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| 136 | autoinc_save_slot = b; |
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| 137 | } |
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| 138 | |
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| 139 | void savestates_inc_slot(void) |
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| 140 | { |
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| 141 | if(++slot>9) |
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| 142 | slot = 0; |
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| 143 | StateChanged(M64CORE_SAVESTATE_SLOT, slot); |
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| 144 | } |
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| 145 | |
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| 146 | savestates_job savestates_get_job(void) |
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| 147 | { |
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| 148 | return job; |
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| 149 | } |
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| 150 | |
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| 151 | void savestates_set_job(savestates_job j, savestates_type t, const char *fn) |
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| 152 | { |
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| 153 | if (fname != NULL) |
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| 154 | { |
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| 155 | free(fname); |
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| 156 | fname = NULL; |
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| 157 | } |
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| 158 | |
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| 159 | job = j; |
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| 160 | type = t; |
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| 161 | if (fn != NULL) |
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| 162 | fname = strdup(fn); |
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| 163 | } |
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| 164 | |
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| 165 | static void savestates_clear_job(void) |
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| 166 | { |
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| 167 | savestates_set_job(savestates_job_nothing, savestates_type_unknown, NULL); |
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| 168 | } |
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| 169 | |
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| 170 | #define GETARRAY(buff, type, count) \ |
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| 171 | (to_little_endian_buffer(buff, sizeof(type),count), \ |
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| 172 | buff += count*sizeof(type), \ |
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| 173 | (type *)(buff-count*sizeof(type))) |
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| 174 | #define COPYARRAY(dst, buff, type, count) \ |
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| 175 | memcpy(dst, GETARRAY(buff, type, count), sizeof(type)*count) |
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| 176 | #define GETDATA(buff, type) *GETARRAY(buff, type, 1) |
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| 177 | #define PUTARRAY(src, buff, type, count) \ |
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| 178 | memcpy(buff, src, sizeof(type)*count); \ |
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| 179 | to_little_endian_buffer(buff, sizeof(type), count); \ |
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| 180 | buff += count*sizeof(type); |
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| 181 | |
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| 182 | #define PUTDATA(buff, type, value) \ |
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| 183 | do { type |
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