mirror of
https://github.com/libretro/RetroArch
synced 2025-01-16 16:29:28 +00:00
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/* Copyright (C) 2010-2020 The RetroArch team
|
|
*
|
|
* ---------------------------------------------------------------------------------------
|
|
* The following license statement only applies to this file (cdfs.h).
|
|
* ---------------------------------------------------------------------------------------
|
|
*
|
|
* Permission is hereby granted, free of charge,
|
|
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation the rights to
|
|
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
|
|
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
|
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef __RARCH_CDFS_H
|
|
#define __RARCH_CDFS_H
|
|
|
|
#include <streams/interface_stream.h>
|
|
|
|
RETRO_BEGIN_DECLS
|
|
|
|
/* these functions provide an interface for locating and reading files within a data track
|
|
* of a CD (following the ISO-9660 directory structure definition)
|
|
*/
|
|
|
|
typedef struct cdfs_track_t
|
|
{
|
|
intfstream_t* stream;
|
|
unsigned int stream_sector_size;
|
|
unsigned int stream_sector_header_size;
|
|
unsigned int first_sector_offset;
|
|
} cdfs_track_t;
|
|
|
|
typedef struct cdfs_file_t
|
|
{
|
|
struct cdfs_track_t* track;
|
|
int first_sector;
|
|
int current_sector;
|
|
int sector_buffer_valid;
|
|
unsigned int current_sector_offset;
|
|
unsigned int size;
|
|
unsigned int pos;
|
|
uint8_t sector_buffer[2048];
|
|
} cdfs_file_t;
|
|
|
|
/* opens the specified file within the CD or virtual CD.
|
|
* if path is NULL, will open the raw CD (useful for
|
|
* reading CD without having to worry about sector sizes,
|
|
* headers, or checksum data)
|
|
*/
|
|
int cdfs_open_file(cdfs_file_t* file, cdfs_track_t* stream, const char* path);
|
|
|
|
void cdfs_close_file(cdfs_file_t* file);
|
|
|
|
int64_t cdfs_read_file(cdfs_file_t* file, void* buffer, uint64_t len);
|
|
|
|
int64_t cdfs_get_size(cdfs_file_t* file);
|
|
|
|
int64_t cdfs_tell(cdfs_file_t* file);
|
|
|
|
int64_t cdfs_seek(cdfs_file_t* file, int64_t offset, int whence);
|
|
|
|
void cdfs_seek_sector(cdfs_file_t* file, unsigned int sector);
|
|
|
|
/* opens the specified track in a CD or virtual CD file - the resulting stream should be passed to
|
|
* cdfs_open_file to get access to a file within the CD.
|
|
*
|
|
* supported files:
|
|
* real CD - path will be in the form "cdrom://drive1.cue" or "cdrom://d:/drive.cue"
|
|
* bin/cue - path will point to the cue file
|
|
* chd - path will point to the chd file
|
|
*
|
|
* for bin/cue files, the following storage modes are supported:
|
|
* MODE2/2352
|
|
* MODE1/2352
|
|
* MODE1/2048 - untested
|
|
* MODE2/2336 - untested
|
|
*/
|
|
cdfs_track_t* cdfs_open_track(const char* path, unsigned int track_index);
|
|
|
|
/* opens the first data track in a CD or virtual CD file. see cdfs_open_track for supported file formats
|
|
*/
|
|
cdfs_track_t* cdfs_open_data_track(const char* path);
|
|
|
|
/* opens a raw track file for a CD or virtual CD.
|
|
*
|
|
* supported files:
|
|
* real CD - path will be in the form "cdrom://drive1-track01.bin" or "cdrom://d:/drive-track01.bin"
|
|
* NOTE: cue file for CD must be opened first to populate vfs_cdrom_toc.
|
|
* bin - path will point to the bin file
|
|
* iso - path will point to the iso file
|
|
*/
|
|
cdfs_track_t* cdfs_open_raw_track(const char* path);
|
|
|
|
/* closes the CD or virtual CD track and frees the associated memory */
|
|
void cdfs_close_track(cdfs_track_t* track);
|
|
|
|
RETRO_END_DECLS
|
|
|
|
#endif /* __RARCH_CDFS_H */
|