mirror of
https://github.com/libretro/RetroArch
synced 2025-03-10 16:14:03 +00:00
Start adding ps1 scanning
This commit is contained in:
Jean-André Santoni
parent
28ac662440
commit
07f362e88d
@ -44,6 +44,7 @@ enum database_type
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DATABASE_TYPE_NONE = 0,
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DATABASE_TYPE_ITERATE,
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DATABASE_TYPE_ITERATE_ZIP,
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DATABASE_TYPE_ITERATE_CUE,
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DATABASE_TYPE_CRC_LOOKUP
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};
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@ -16,6 +16,8 @@
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#include <compat/strcasestr.h>
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#include <compat/strl.h>
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#include <retro_endianness.h>
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#include <errno.h>
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#include <fcntl.h>
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#include "tasks.h"
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@ -32,11 +34,29 @@
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#define CB_DB_SCAN_FOLDER 0xde2bef8eU
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#define HASH_EXTENSION_ZIP 0x0b88c7d8U
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#define HASH_EXTENSION_CUE 0x0b886782U
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#ifndef COLLECTION_SIZE
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#define COLLECTION_SIZE 99999
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#endif
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#define MAX_TOKEN_LEN 255
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#define MAGIC_LEN 16
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struct MagicEntry
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{
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const char* system_name;
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const char* magic;
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};
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static struct MagicEntry MAGIC_NUMBERS[] = {
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{"ps1", "\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x02\x00\x02\x00"},
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{"pcecd", "\x82\xb1\x82\xcc\x83\x76\x83\x8d\x83\x4f\x83\x89\x83\x80\x82\xcc\x92"},
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{"scd", "\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x02\x00\x01\x53"},
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{NULL, NULL}
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};
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typedef struct database_state_handle
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{
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database_info_list_t *info;
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@ -46,6 +66,7 @@ typedef struct database_state_handle
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uint32_t crc;
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uint8_t *buf;
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char zip_name[PATH_MAX_LENGTH];
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char *ps1_id;
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} database_state_handle_t;
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typedef struct db_handle
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@ -141,6 +162,9 @@ static int database_info_iterate_playlist(
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return 1;
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#endif
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case HASH_EXTENSION_CUE:
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db->type = DATABASE_TYPE_ITERATE_CUE;
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return 1;
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default:
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{
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ssize_t ret;
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@ -337,6 +361,247 @@ static int database_info_iterate_playlist_zip(
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return 1;
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}
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ssize_t get_token(int fd, char *token, size_t max_len)
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{
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char *c = token;
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int rv;
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ssize_t len = 0;
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int in_string = 0;
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while (1)
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{
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rv = read(fd, c, 1);
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if (rv == 0)
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return 0;
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else if (rv < 1)
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{
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switch (errno)
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{
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case EINTR:
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case EAGAIN:
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continue;
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default:
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return -errno;
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}
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}
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switch (*c)
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{
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case ' ':
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case '\t':
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case '\r':
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case '\n':
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if (c == token)
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continue;
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if (!in_string)
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{
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*c = '\0';
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return len;
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}
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break;
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case '\"':
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if (c == token)
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{
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in_string = 1;
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continue;
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}
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*c = '\0';
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return len;
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}
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len++;
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c++;
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if (len == (ssize_t)max_len)
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{
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*c = '\0';
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return len;
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}
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}
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}
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int find_token(int fd, const char *token)
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{
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int tmp_len = strlen(token);
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char *tmp_token = (char*)calloc(tmp_len, 1);
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if (!tmp_token)
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return -1;
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while (strncmp(tmp_token, token, tmp_len) != 0)
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{
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if (get_token(fd, tmp_token, tmp_len) <= 0)
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return -1;
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}
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return 0;
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}
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static int detect_ps1_game(const char* track_path, char* game_id)
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{
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const char* pattern = "cdrom:";
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const char* pat_c;
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char* c;
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char* id_start;
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int i;
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int fd = open(track_path, O_RDONLY);
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if (fd < 0)
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{
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RARCH_LOG("Could not open data track: %s\n", strerror(errno));
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return -errno;
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}
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lseek(fd, 0x9340, SEEK_SET);
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if (read(fd, game_id, 10) > 0)
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{
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game_id[10] = '\0';
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game_id[4] = '-';
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}
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close(fd);
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return 1;
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}
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static int detect_system(const char* track_path, int32_t offset,
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const char** system_name)
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{
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int rv;
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char magic[MAGIC_LEN];
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int fd;
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int i;
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fd = open(track_path, O_RDONLY);
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if (fd < 0)
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{
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RARCH_LOG("Could not open data track of file '%s': %s\n",
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track_path, strerror(errno));
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rv = -errno;
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goto clean;
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}
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lseek(fd, offset, SEEK_SET);
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if (read(fd, magic, MAGIC_LEN) < MAGIC_LEN)
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{
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RARCH_LOG("Could not read data from file '%s' at offset %d: %s\n",
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track_path, offset, strerror(errno));
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rv = -errno;
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goto clean;
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}
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RARCH_LOG("Comparing with known magic numbers...\n");
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for (i = 0; MAGIC_NUMBERS[i].system_name != NULL; i++)
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{
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if (memcmp(MAGIC_NUMBERS[i].magic, magic, MAGIC_LEN) == 0)
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{
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*system_name = MAGIC_NUMBERS[i].system_name;
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rv = 0;
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goto clean;
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}
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}
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RARCH_LOG("Could not find compatible system\n");
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rv = -EINVAL;
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clean:
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close(fd);
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return rv;
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}
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static int find_first_data_track(const char* cue_path, int32_t* offset,
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char* track_path, size_t max_len)
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{
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int rv;
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int fd = -1;
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char tmp_token[MAX_TOKEN_LEN];
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int m, s, f;
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char cue_dir[PATH_MAX];
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strlcpy(cue_dir, cue_path, PATH_MAX);
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path_basedir(cue_dir);
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fd = open(cue_path, O_RDONLY);
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if (fd < 0)
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{
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RARCH_LOG("Could not open CUE file '%s': %s\n", cue_path,
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strerror(errno));
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return -errno;
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}
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RARCH_LOG("Parsing CUE file '%s'...\n", cue_path);
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while (get_token(fd, tmp_token, MAX_TOKEN_LEN) > 0)
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{
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if (strcmp(tmp_token, "FILE") == 0)
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{
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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fill_pathname_join(track_path, cue_dir, tmp_token, max_len);
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}
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else if (strcasecmp(tmp_token, "TRACK") == 0)
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{
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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if (strcasecmp(tmp_token, "AUDIO") == 0)
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continue;
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find_token(fd, "INDEX");
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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get_token(fd, tmp_token, MAX_TOKEN_LEN);
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if (sscanf(tmp_token, "%02d:%02d:%02d", &m, &s, &f) < 3)
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{
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RARCH_LOG("Error parsing time stamp '%s'\n", tmp_token);
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return -errno;
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}
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*offset = ((m * 60) * (s * 75) * f) * 25;
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RARCH_LOG("Found 1st data track on file '%s+%d'\n",
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track_path, *offset);
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rv = 0;
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goto clean;
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}
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}
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rv = -EINVAL;
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clean:
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close(fd);
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return rv;
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}
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static int database_info_iterate_playlist_cue(
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database_state_handle_t *db_state,
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database_info_handle_t *db, const char *name)
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{
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int rv;
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char track_path[PATH_MAX];
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int32_t offset = 0;
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const char* system_name = NULL;
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size_t max_len = MAX_TOKEN_LEN;
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char game_id[4096];
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rv = find_first_data_track(name, &offset, track_path, PATH_MAX);
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if (rv < 0)
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{
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RARCH_LOG("Could not find valid data track: %s\n", strerror(-rv));
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return rv;
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}
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RARCH_LOG("Reading 1st data track...\n");
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if ((rv = detect_system(track_path, offset, &system_name)) < 0)
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return rv;
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RARCH_LOG("Detected %s media\n", system_name);
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if (strcmp(system_name, "ps1") == 0)
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{
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if (detect_ps1_game(track_path, game_id) == 0)
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return 0;
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RARCH_LOG("Found disk label '%s'\n", game_id);
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}
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return 0;
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}
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static int database_info_iterate(database_state_handle_t *db_state, database_info_handle_t *db)
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{
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const char *name = db ? db->list->elems[db->list_ptr].data : NULL;
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@ -355,6 +620,8 @@ static int database_info_iterate(database_state_handle_t *db_state, database_inf
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return database_info_iterate_playlist(db_state, db, name);
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case DATABASE_TYPE_ITERATE_ZIP:
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return database_info_iterate_playlist_zip(db_state, db, name);
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case DATABASE_TYPE_ITERATE_CUE:
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return database_info_iterate_playlist_cue(db_state, db, name);
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case DATABASE_TYPE_CRC_LOOKUP:
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return database_info_iterate_crc_lookup(db_state, db, NULL);
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}
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