libretro/RetroArch
1
0
Fork 0
mirror of https://github.com/libretro/RetroArch.git synced 2024-12-12 19:21:33 +00:00
Code Issues Actions 23 Packages Projects Releases Wiki Activity
89481d6d2e
RetroArch/tasks/task_database_cue.c

408 lines
9.6 KiB
C
Raw Blame History

/* RetroArch - A frontend for libretro.
* Copyright (C) 2011-2016 - Daniel De Matteis
* Copyright (C) 2014-2016 - Jean-André Santoni
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <ctype.h>
#include <compat/strcasestr.h>
#include <compat/strl.h>
#include <retro_endianness.h>
#include <retro_file.h>
#include <string/stdstring.h>
#include "tasks.h"
#ifdef HAVE_LIBRETRODB
#include "../database_info.h"
#endif
#include "../dir_list_special.h"
#include "../file_ops.h"
#include "../msg_hash.h"
#include "../general.h"
#include "../verbosity.h"
#define MAGIC_LEN 16
struct magic_entry
{
const char *system_name;
const char *magic;
};
static struct magic_entry MAGIC_NUMBERS[] = {
{"ps1", "\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x02\x00\x02\x00"},
{"pcecd", "\x82\xb1\x82\xcc\x83\x76\x83\x8d\x83\x4f\x83\x89\x83\x80\x82\xcc\x92"},
{"scd", "\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x02\x00\x01\x53"},
{NULL, NULL}
};
static ssize_t get_token(RFILE *fd, char *token, size_t max_len)
{
char *c = token;
ssize_t len = 0;
int in_string = 0;
while (1)
{
int rv = retro_fread(fd, c, 1);
if (rv == 0)
return 0;
if (rv < 1)
{
switch (errno)
{
case EINTR:
case EAGAIN:
continue;
default:
return -errno;
}
}
switch (*c)
{
case ' ':
case '\t':
case '\r':
case '\n':
if (c == token)
continue;
if (!in_string)
{
*c = '\0';
return len;
}
break;
case '\"':
if (c == token)
{
in_string = 1;
continue;
}
*c = '\0';
return len;
}
len++;
c++;
if (len == (ssize_t)max_len)
{
*c = '\0';
return len;
}
}
}
static int find_token(RFILE *fd, const char *token)
{
int tmp_len = strlen(token);
char *tmp_token = (char*)calloc(tmp_len+1, 1);
if (!tmp_token)
return -1;
while (strncmp(tmp_token, token, tmp_len) != 0)
{
if (get_token(fd, tmp_token, tmp_len) <= 0)
return -1;
}
free(tmp_token);
return 0;
}
#ifdef MSB_FIRST
#define MODETEST_VAL 0x00ffffff
#else
#define MODETEST_VAL 0xffffff00
#endif
static int detect_ps1_game_sub(const char *track_path, char *game_id, int sub_channel_mixed)
{
uint8_t* tmp;
uint8_t buffer[2048 * 2];
int skip, frame_size, is_mode1, cd_sector;
RFILE *fp = retro_fopen(track_path, RFILE_MODE_READ, -1);
if (!fp)
return 0;
is_mode1 = 0;
retro_fseek(fp, 0, SEEK_END);
if (!sub_channel_mixed)
{
if (!(retro_ftell(fp) & 0x7FF))
{
unsigned int mode_test = 0;
retro_fseek(fp, 0, SEEK_SET);
retro_fread(fp, &mode_test, 4);
if (mode_test != MODETEST_VAL)
is_mode1 = 1;
}
}
skip = is_mode1? 0: 24;
frame_size = sub_channel_mixed? 2448: is_mode1? 2048: 2352;
retro_fseek(fp, 156 + skip + 16 * frame_size, SEEK_SET);
retro_fread(fp, buffer, 6);
cd_sector = buffer[2] | (buffer[3] << 8) | (buffer[4] << 16);
retro_fseek(fp, skip + cd_sector * frame_size, SEEK_SET);
retro_fread(fp, buffer, 2048 * 2);
tmp = buffer;
while (tmp < (buffer + 2048 * 2))
{
if (!*tmp)
return 0;
if (!strncasecmp((const char*)(tmp + 33), "SYSTEM.CNF;1", 12))
break;
tmp += *tmp;
}
if(tmp >= (buffer + 2048 * 2))
return 0;
cd_sector = tmp[2] | (tmp[3] << 8) | (tmp[4] << 16);
retro_fseek(fp, 13 + skip + cd_sector * frame_size, SEEK_SET);
retro_fread(fp, buffer, 256);
tmp = (uint8_t*)strrchr((const char*)buffer, '\\');
if(!tmp)
tmp = buffer;
else
tmp++;
*game_id++ = toupper(*tmp++);
*game_id++ = toupper(*tmp++);
*game_id++ = toupper(*tmp++);
*game_id++ = toupper(*tmp++);
*game_id++ = '-';
tmp++;
*game_id++ = *tmp++;
*game_id++ = *tmp++;
*game_id++ = *tmp++;
tmp++;
*game_id++ = *tmp++;
*game_id++ = *tmp++;
*game_id = 0;
retro_fclose(fp);
return 1;
}
int detect_ps1_game(const char *track_path, char *game_id)
{
if (detect_ps1_game_sub(track_path, game_id, 0))
return 1;
return detect_ps1_game_sub(track_path, game_id, 1);
}
int detect_psp_game(const char *track_path, char *game_id)
{
bool rv = false;
unsigned pos;
RFILE *fd = retro_fopen(track_path, RFILE_MODE_READ, -1);
if (!fd)
{
RARCH_LOG("Could not open data track: %s\n", strerror(errno));
return -errno;
}
for (pos = 0; pos < 100000; pos++)
{
retro_fseek(fd, pos, SEEK_SET);
if (retro_fread(fd, game_id, 5) > 0)
{
game_id[5] = '\0';
if (string_is_equal(game_id, "ULES-")
|| string_is_equal(game_id, "ULUS-")
|| string_is_equal(game_id, "ULJS-")
|| string_is_equal(game_id, "ULEM-")
|| string_is_equal(game_id, "ULUM-")
|| string_is_equal(game_id, "ULJM-")
|| string_is_equal(game_id, "UCES-")
|| string_is_equal(game_id, "UCUS-")
|| string_is_equal(game_id, "UCJS-")
|| string_is_equal(game_id, "UCAS-")
|| string_is_equal(game_id, "NPEH-")
|| string_is_equal(game_id, "NPUH-")
|| string_is_equal(game_id, "NPJH-")
|| string_is_equal(game_id, "NPEG-")
|| string_is_equal(game_id, "NPUG-")
|| string_is_equal(game_id, "NPJG-")
|| string_is_equal(game_id, "NPHG-")
|| string_is_equal(game_id, "NPEZ-")
|| string_is_equal(game_id, "NPUZ-")
|| string_is_equal(game_id, "NPJZ-")
)
{
retro_fseek(fd, pos, SEEK_SET);
if (retro_fread(fd, game_id, 10) > 0)
{
#if 0
game_id[4] = '-';
game_id[8] = game_id[9];
game_id[9] = game_id[10];
#endif
game_id[10] = '\0';
rv = true;
}
break;
}
}
else
break;
}
retro_fclose(fd);
return rv;
}
int detect_system(const char *track_path, int32_t offset,
const char **system_name)
{
int rv;
char magic[MAGIC_LEN];
int i;
RFILE *fd = retro_fopen(track_path, RFILE_MODE_READ, -1);
if (!fd)
{
RARCH_LOG("Could not open data track of file '%s': %s\n",
track_path, strerror(errno));
rv = -errno;
goto clean;
}
retro_fseek(fd, offset, SEEK_SET);
if (retro_fread(fd, magic, MAGIC_LEN) < MAGIC_LEN)
{
RARCH_LOG("Could not read data from file '%s' at offset %d: %s\n",
track_path, offset, strerror(errno));
rv = -errno;
goto clean;
}
RARCH_LOG("Comparing with known magic numbers...\n");
for (i = 0; MAGIC_NUMBERS[i].system_name != NULL; i++)
{
if (memcmp(MAGIC_NUMBERS[i].magic, magic, MAGIC_LEN) == 0)
{
*system_name = MAGIC_NUMBERS[i].system_name;
rv = 0;
goto clean;
}
}
retro_fseek(fd, 0x8008, SEEK_SET);
if (retro_fread(fd, magic, 8) > 0)
{
magic[8] = '\0';
if (string_is_equal(magic, "PSP GAME"))
{
*system_name = "psp\0";
rv = 0;
goto clean;
}
}
RARCH_LOG("Could not find compatible system\n");
rv = -EINVAL;
clean:
retro_fclose(fd);
return rv;
}
int find_first_data_track(const char *cue_path,
int32_t *offset, char *track_path, size_t max_len)
{
int rv, m, s, f;
char tmp_token[MAX_TOKEN_LEN];
char cue_dir[PATH_MAX_LENGTH];
RFILE *fd;
strlcpy(cue_dir, cue_path, PATH_MAX_LENGTH);
path_basedir(cue_dir);
fd = retro_fopen(cue_path, RFILE_MODE_READ, -1);
if (!fd)
{
RARCH_LOG("Could not open CUE file '%s': %s\n", cue_path,
strerror(errno));
return -errno;
}
RARCH_LOG("Parsing CUE file '%s'...\n", cue_path);
while (get_token(fd, tmp_token, MAX_TOKEN_LEN) > 0)
{
if (string_is_equal(tmp_token, "FILE"))
{
get_token(fd, tmp_token, MAX_TOKEN_LEN);
fill_pathname_join(track_path, cue_dir, tmp_token, max_len);
}
else if (string_is_equal_noncase(tmp_token, "TRACK"))
{
get_token(fd, tmp_token, MAX_TOKEN_LEN);
get_token(fd, tmp_token, MAX_TOKEN_LEN);
if (string_is_equal_noncase(tmp_token, "AUDIO"))
continue;
find_token(fd, "INDEX");
get_token(fd, tmp_token, MAX_TOKEN_LEN);
get_token(fd, tmp_token, MAX_TOKEN_LEN);
if (sscanf(tmp_token, "%02d:%02d:%02d", &m, &s, &f) < 3)
{
RARCH_LOG("Error parsing time stamp '%s'\n", tmp_token);
return -errno;
}
*offset = ((m * 60) * (s * 75) * f) * 25;
RARCH_LOG("Found 1st data track on file '%s+%d'\n",
track_path, *offset);
rv = 0;
goto clean;
}
}
rv = -EINVAL;
clean:
retro_fclose(fd);
return rv;
}
Reference in New Issue View Git Blame Copy Permalink