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https://github.com/libretro/RetroArch
synced 2025-01-29 00:32:49 +00:00
stdin support, etc.
This commit is contained in:
Themaister
parent
79b520a75c
commit
ec4e52d886
202
ssnes.c
202
ssnes.c
@ -23,6 +23,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include "config.h"
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#include "driver.h"
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#include "hqflt/pastlib.h"
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@ -336,29 +337,167 @@ static void fill_pathname(char *out_path, char *in_path, const char *replace)
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strcat(out_path, replace);
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}
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static void print_help(void)
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{
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puts("===========================================");
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puts("ssnes: Simple Super Nintendo Emulator (libsnes)");
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puts("===========================================");
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puts("Usage: ssnes [rom file] [-h/--help | -s/--save]");
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puts("\t-h/--help: Show this help message");
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puts("\t-s/--save: Path for save file (*.srm). Required when rom is input from stdin");
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}
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static FILE* rom_file = NULL;
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static char savefile_name_srm[256] = {0};
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static void parse_input(int argc, char *argv[])
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{
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if (argc < 2)
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{
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print_help();
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exit(1);
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}
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struct option opts[] = {
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{ "help", 0, NULL, 'h' },
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{ "save", 1, NULL, 's' },
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{ NULL, 0, NULL, 0 }
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};
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int option_index = 0;
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char optstring[] = "hs:";
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for(;;)
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{
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int c = getopt_long(argc, argv, optstring, opts, &option_index);
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if (c == -1)
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break;
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switch (c)
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{
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case 'h':
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print_help();
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exit(0);
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case 's':
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strncpy(savefile_name_srm, optarg, sizeof(savefile_name_srm));
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savefile_name_srm[sizeof(savefile_name_srm)-1] = '\0';
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break;
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case '?':
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print_help();
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exit(1);
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default:
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fprintf(stderr, "Error parsing arguments.\n");
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exit(1);
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}
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}
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if (optind < argc)
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{
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fprintf(stderr, "SSNES: Opening file: \"%s\"\n", argv[1]);
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rom_file = fopen(argv[optind], "rb");
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if (rom_file == NULL)
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{
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fprintf(stderr, "Could not open file: \"%s\"\n", optarg);
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exit(1);
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}
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if (strlen(savefile_name_srm) == 0)
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fill_pathname(savefile_name_srm, argv[optind], ".srm");
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}
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}
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static ssize_t read_file(FILE* file, void** buf)
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{
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ssize_t ret;
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if (file == NULL) // stdin
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{
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size_t buf_size = 0xFFFFF; // Some initial guesstimate.
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size_t buf_ptr = 0;
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char *rom_buf = malloc(buf_size);
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if (rom_buf == NULL)
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{
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fprintf(stderr, "SSNES [ERROR] :: Couldn't allocate memory!\n");
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return -1;
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}
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for(;;)
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{
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size_t ret = fread(rom_buf + buf_ptr, 1, buf_size - buf_ptr, stdin);
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buf_ptr += ret;
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// We've reached the end
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if (buf_ptr < buf_size)
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break;
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rom_buf = realloc(rom_buf, buf_size * 2);
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if (rom_buf == NULL)
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{
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fprintf(stderr, "SSNES [ERROR] :: Couldn't allocate memory!\n");
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return -1;
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}
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buf_size *= 2;
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}
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if ((buf_size & 0x7fff) == 512)
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{
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buf_size -= 512;
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}
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*buf = rom_buf;
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ret = buf_size;
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}
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else
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{
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fseek(file, 0, SEEK_END);
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long length = ftell(file);
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rewind(file);
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if ((length & 0x7fff) == 512)
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{
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length -= 512;
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fseek(file, 512, SEEK_SET);
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}
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void *rom_buf = malloc(length);
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if ( rom_buf == NULL )
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{
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fprintf(stderr, "SSNES [ERROR] :: Couldn't allocate memory!\n");
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return -1;
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}
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if ( fread(rom_buf, 1, length, file) < length )
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{
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fprintf(stderr, "SSNES [ERROR] :: Didn't read whole file.\n");
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free(rom_buf);
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return -1;
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}
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*buf = rom_buf;
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ret = length;
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}
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return ret;
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}
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int main(int argc, char *argv[])
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{
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if ( argc != 2 )
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parse_input(argc, argv);
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void *rom_buf;
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ssize_t rom_len = 0;
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if ((rom_len = read_file(rom_file, &rom_buf)) == -1)
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{
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fprintf(stderr, "Usage: %s file\n", argv[0]);
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fprintf(stderr, "SSNES [ERROR] :: Could not read ROM file.\n");
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exit(1);
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}
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fprintf(stderr, "SSNES: Opening file: \"%s\"\n", argv[1]);
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FILE *file = fopen(argv[1], "rb");
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if ( file == NULL )
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{
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fprintf(stderr, "SSNES [ERROR]: Could not open file: \"%s\"\n", argv[1]);
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exit(1);
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}
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if (rom_file != NULL)
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fclose(rom_file);
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char statefile_name[strlen(argv[1])+strlen(".state")+1];
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char savefile_name_rtc[strlen(argv[1])+strlen(".rtc")+1];
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char savefile_name_srm[strlen(argv[1])+strlen(".srm")+1];
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char statefile_name[strlen(savefile_name_srm)+strlen(".state")+1];
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char savefile_name_rtc[strlen(savefile_name_srm)+strlen(".rtc")+1];
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fill_pathname(statefile_name, argv[1], ".state");
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fill_pathname(savefile_name_rtc, argv[1], ".rtc");
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fill_pathname(savefile_name_srm, argv[1], ".srm");
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init_drivers();
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@ -368,33 +507,8 @@ int main(int argc, char *argv[])
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snes_set_audio_sample(audio_sample);
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snes_set_input_poll(input_poll);
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snes_set_input_state(input_state);
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fseek(file, 0, SEEK_END);
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long length = ftell(file);
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rewind(file);
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if ((length & 0x7fff) == 512)
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{
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length -= 512;
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fseek(file, 512, SEEK_SET);
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}
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void *rom_buf = malloc(length);
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if ( rom_buf == NULL )
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{
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fprintf(stderr, "SSNES [ERROR] :: Couldn't allocate memory!\n");
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goto error;
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}
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if ( fread(rom_buf, 1, length, file) < length )
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{
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fprintf(stderr, "SSNES [ERROR] :: Didn't read whole file.\n");
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goto error;
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}
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fclose(file);
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if (!snes_load_cartridge_normal(NULL, rom_buf, length))
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if (!snes_load_cartridge_normal(NULL, rom_buf, rom_len))
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{
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fprintf(stderr, "SSNES [ERROR] :: ROM file \"%s\" is not valid!\n", argv[1]);;
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goto error;
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@ -404,6 +518,11 @@ int main(int argc, char *argv[])
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unsigned serial_size = snes_serialize_size();
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uint8_t *serial_data = malloc(serial_size);
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if (serial_data == NULL)
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{
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fprintf(stderr, "SSNES [ERROR] :: Failed to allocate memory for states!\n");
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goto error;
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}
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load_save_file(savefile_name_srm, SNES_MEMORY_CARTRIDGE_RAM);
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load_save_file(savefile_name_rtc, SNES_MEMORY_CARTRIDGE_RTC);
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@ -411,7 +530,7 @@ int main(int argc, char *argv[])
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///// TODO: Modular friendly!!!
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for(;;)
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{
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int quitting = glfwGetKey(GLFW_KEY_ESC) || !glfwGetWindowParam(GLFW_OPENED);
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bool quitting = glfwGetKey(GLFW_KEY_ESC) || !glfwGetWindowParam(GLFW_OPENED);
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if ( quitting )
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break;
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@ -440,6 +559,7 @@ int main(int argc, char *argv[])
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snes_unload_cartridge();
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snes_term();
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uninit_drivers();
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free(serial_data);
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return 0;
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