starting SDL port, refactoring

[picodrive.git] / platform / common / emu.c

diff --git a/platform/common/emu.c b/platform/common/emu.c
index 8066796..76765a4 100644 (file)
--- a/platform/common/emu.c
+++ b/platform/common/emu.c
@@ -47,8 +47,7 @@ int engineState = PGS_Menu;
 \r
 /* tmp buff to reduce stack usage for plats with small stack */\r
 static char static_buff[512];\r
-/* TODO: len checking */\r
-char rom_fname_reload[512];\r
+const char *rom_fname_reload;\r
 char rom_fname_loaded[512];\r
 int rom_loaded = 0;\r
 int reset_timing = 0;\r
@@ -147,7 +146,7 @@ static const char * const biosfiles_us[] = { "us_scd1_9210", "us_scd2_9306", "Se
 static const char * const biosfiles_eu[] = { "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303"   };\r
 static const char * const biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
 \r
-static int find_bios(int region, char **bios_file)\r
+static int find_bios(int region, const char **bios_file)\r
 {\r
        int i, count;\r
        const char * const *files;\r
@@ -484,21 +483,28 @@ static void system_announce(void)
        emu_status_msg("%s %s / %dFPS%s", tv_standard, sys_name, fps, extra);\r
 }\r
 \r
-// note: this function might mangle rom_fname\r
 // XXX: portions of this code should move to pico/\r
-int emu_reload_rom(char *rom_fname)\r
+int emu_reload_rom(const char *rom_fname_in)\r
 {\r
        unsigned int rom_size = 0;\r
-       char *used_rom_name = rom_fname;\r
+       const char *used_rom_name = NULL;\r
+       char *rom_fname = NULL;\r
        unsigned char *rom_data = NULL;\r
        char ext[5];\r
        pm_file *rom = NULL;\r
        int cd_state = CIT_NOT_CD;\r
        int ret, media_type, cd_region;\r
        int cfg_loaded = 0, bad_rom = 0;\r
+       int menu_romload_started = 0;\r
+       int retval = 0;\r
 \r
-       lprintf("emu_ReloadRom(%s)\n", rom_fname);\r
+       lprintf("emu_ReloadRom(%s)\n", rom_fname_in);\r
 \r
+       rom_fname = strdup(rom_fname_in);\r
+       if (rom_fname == NULL)\r
+               return 0;\r
+\r
+       used_rom_name = rom_fname;\r
        get_ext(rom_fname, ext);\r
 \r
        // early cleanup\r
@@ -515,7 +521,7 @@ int emu_reload_rom(char *rom_fname)
                FILE *movie_file = fopen(rom_fname, "rb");\r
                if (!movie_file) {\r
                        menu_update_msg("Failed to open movie.");\r
-                       return 0;\r
+                       goto out;\r
                }\r
                fseek(movie_file, 0, SEEK_END);\r
                movie_size = ftell(movie_file);\r
@@ -523,24 +529,24 @@ int emu_reload_rom(char *rom_fname)
                if (movie_size < 64+3) {\r
                        menu_update_msg("Invalid GMV file.");\r
                        fclose(movie_file);\r
-                       return 0;\r
+                       goto out;\r
                }\r
                movie_data = malloc(movie_size);\r
                if (movie_data == NULL) {\r
                        menu_update_msg("low memory.");\r
                        fclose(movie_file);\r
-                       return 0;\r
+                       goto out;\r
                }\r
                dummy = fread(movie_data, 1, movie_size, movie_file);\r
                fclose(movie_file);\r
                if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
                        menu_update_msg("Invalid GMV file.");\r
-                       return 0;\r
+                       goto out;\r
                }\r
                dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);\r
                if (!dummy) {\r
                        menu_update_msg("Could't find a ROM for movie.");\r
-                       return 0;\r
+                       goto out;\r
                }\r
                get_ext(rom_fname, ext);\r
                lprintf("gmv loaded for %s\n", rom_fname);\r
@@ -552,7 +558,7 @@ int emu_reload_rom(char *rom_fname)
                dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);\r
                if (!dummy) {\r
                        menu_update_msg("Could't find a ROM to patch.");\r
-                       return 0;\r
+                       goto out;\r
                }\r
                get_ext(rom_fname, ext);\r
        }\r
@@ -560,7 +566,7 @@ int emu_reload_rom(char *rom_fname)
        media_type = detect_media(rom_fname);\r
        if (media_type == PM_BAD) {\r
                menu_update_msg("Not a ROM/CD img selected.");\r
-               return 0;\r
+               goto out;\r
        }\r
 \r
        shutdown_MCD();\r
@@ -588,14 +594,14 @@ int emu_reload_rom(char *rom_fname)
                                        (cd_region == 8 ? "EU" : "JAP") : "USA");\r
                        }\r
                        if (!find_bios(cd_region, &used_rom_name))\r
-                               return 0;\r
+                               goto out;\r
 \r
                        get_ext(used_rom_name, ext);\r
                        PicoAHW |= PAHW_MCD;\r
                }\r
                else {\r
                        menu_update_msg("Invalid CD image");\r
-                       return 0;\r
+                       goto out;\r
                }\r
        }\r
        else if (media_type == PM_MARK3) {\r
@@ -606,10 +612,11 @@ int emu_reload_rom(char *rom_fname)
        rom = pm_open(used_rom_name);\r
        if (rom == NULL) {\r
                menu_update_msg("Failed to open ROM");\r
-               return 0;\r
+               goto out;\r
        }\r
 \r
        menu_romload_prepare(used_rom_name); // also CD load\r
+       menu_romload_started = 1;\r
        used_rom_name = NULL; // uses static_buff\r
 \r
        ret = PicoCartLoad(rom, &rom_data, &rom_size, (PicoAHW & PAHW_SMS) ? 1 : 0);\r
@@ -618,7 +625,7 @@ int emu_reload_rom(char *rom_fname)
                if      (ret == 2) menu_update_msg("Out of memory");\r
                else if (ret == 3) menu_update_msg("Read failed");\r
                else               menu_update_msg("PicoCartLoad() failed.");\r
-               goto fail;\r
+               goto out;\r
        }\r
 \r
        // detect wrong files\r
@@ -634,7 +641,7 @@ int emu_reload_rom(char *rom_fname)
 \r
        if (bad_rom) {\r
                menu_update_msg("Bad ROM detected.");\r
-               goto fail;\r
+               goto out;\r
        }\r
 \r
        // load config for this ROM (do this before insert to get correct region)\r
@@ -648,7 +655,7 @@ int emu_reload_rom(char *rom_fname)
        emu_make_path(static_buff, "carthw.cfg", sizeof(static_buff));\r
        if (PicoCartInsert(rom_data, rom_size, static_buff)) {\r
                menu_update_msg("Failed to load ROM.");\r
-               goto fail;\r
+               goto out;\r
        }\r
 \r
        // insert CD if it was detected\r
@@ -658,11 +665,12 @@ int emu_reload_rom(char *rom_fname)
                        PicoCartUnload();\r
                        rom_data = NULL; // freed by unload\r
                        menu_update_msg("Insert_CD() failed, invalid CD image?");\r
-                       goto fail;\r
+                       goto out;\r
                }\r
        }\r
 \r
        menu_romload_end();\r
+       menu_romload_started = 0;\r
 \r
        if (PicoPatches) {\r
                PicoPatchPrepare();\r
@@ -702,13 +710,14 @@ int emu_reload_rom(char *rom_fname)
        if (currentConfig.EmuOpt & EOPT_EN_SRAM)\r
                emu_save_load_game(1, 1);\r
 \r
-       return 1;\r
-\r
-fail:\r
-       if (rom_data)\r
+       retval = 1;\r
+out:\r
+       if (retval == 0 && rom_data)\r
                free(rom_data);\r
-       menu_romload_end();\r
-       return 0;\r
+       if (menu_romload_started)\r
+               menu_romload_end();\r
+       free(rom_fname);\r
+       return retval;\r
 }\r
 \r
 int emu_swap_cd(const char *fname)\r
@@ -1466,6 +1475,7 @@ void emu_loop(void)
        if (PicoAHW & PAHW_MCD)\r
                PicoCDBufferInit();\r
 \r
+       plat_video_loop_prepare();\r
        pemu_loop_prep();\r
 \r
        /* number of ticks per frame */\r