mirror of
https://github.com/holub/mame
synced 2025-05-19 03:59:35 +03:00
e0ccde49a3
update old tags. Modified cdrom.c to expose metadata read/write functions, and changed chdman to use them. Also changed chdman to parse old-style metadata and convert it to new-style metadata since we're going to need to re-do this anyway and the two won't hash to the same value. Added completely untested support for the ident metadata to the hard disk creation path. If a filename is provided immediately after the source filename, it is taken as an ident file and processed for CHS data and added. Other metadata types can be added afterwards via -addmeta.
141 lines
4.3 KiB
C
141 lines
4.3 KiB
C
/***************************************************************************
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cdrom.h
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Generic MAME cd-rom implementation
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Copyright Nicola Salmoria and the MAME Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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***************************************************************************/
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#pragma once
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#ifndef __CDROM_H__
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#define __CDROM_H__
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#include "osdcore.h"
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#include "chd.h"
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/***************************************************************************
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CONSTANTS
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***************************************************************************/
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#define CD_MAX_TRACKS (99) /* AFAIK the theoretical limit */
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#define CD_MAX_SECTOR_DATA (2352)
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#define CD_MAX_SUBCODE_DATA (96)
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#define CD_FRAME_SIZE (CD_MAX_SECTOR_DATA + CD_MAX_SUBCODE_DATA)
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#define CD_FRAMES_PER_HUNK (4)
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#define CD_METADATA_WORDS (1+(CD_MAX_TRACKS * 6))
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enum
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{
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CD_TRACK_MODE1 = 0, /* mode 1 2048 bytes/sector */
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CD_TRACK_MODE1_RAW, /* mode 1 2352 bytes/sector */
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CD_TRACK_MODE2, /* mode 2 2336 bytes/sector */
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CD_TRACK_MODE2_FORM1, /* mode 2 2048 bytes/sector */
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CD_TRACK_MODE2_FORM2, /* mode 2 2324 bytes/sector */
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CD_TRACK_MODE2_FORM_MIX, /* mode 2 2336 bytes/sector */
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CD_TRACK_MODE2_RAW, /* mode 2 2352 bytes / sector */
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CD_TRACK_AUDIO, /* redbook audio track 2352 bytes/sector (588 samples) */
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CD_TRACK_RAW_DONTCARE /* special flag for cdrom_read_data: just return me whatever is there */
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};
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enum
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{
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CD_SUB_NORMAL = 0, /* "cooked" 96 bytes per sector */
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CD_SUB_RAW, /* raw uninterleaved 96 bytes per sector */
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CD_SUB_NONE /* no subcode data stored */
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};
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/***************************************************************************
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TYPE DEFINITIONS
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***************************************************************************/
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typedef struct _cdrom_file cdrom_file;
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typedef struct _cdrom_track_info cdrom_track_info;
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struct _cdrom_track_info
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{
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/* fields used by CHDMAN and in MAME */
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UINT32 trktype; /* track type */
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UINT32 subtype; /* subcode data type */
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UINT32 datasize; /* size of data in each sector of this track */
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UINT32 subsize; /* size of subchannel data in each sector of this track */
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UINT32 frames; /* number of frames in this track */
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UINT32 extraframes; /* number of "spillage" frames in this track */
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/* fields used in MAME only */
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UINT32 physframeofs; /* frame number on the real CD this track starts at */
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UINT32 chdframeofs; /* frame number this track starts at on the CHD */
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};
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typedef struct _cdrom_toc cdrom_toc;
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struct _cdrom_toc
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{
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UINT32 numtrks; /* number of tracks */
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cdrom_track_info tracks[CD_MAX_TRACKS];
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};
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/***************************************************************************
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FUNCTION PROTOTYPES
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***************************************************************************/
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/* base functionality */
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cdrom_file *cdrom_open(chd_file *chd);
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void cdrom_close(cdrom_file *file);
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/* core read access */
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UINT32 cdrom_read_data(cdrom_file *file, UINT32 lbasector, void *buffer, UINT32 datatype);
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UINT32 cdrom_read_subcode(cdrom_file *file, UINT32 lbasector, void *buffer);
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/* handy utilities */
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UINT32 cdrom_get_track(cdrom_file *file, UINT32 frame);
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UINT32 cdrom_get_track_start(cdrom_file *file, UINT32 track);
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/* TOC utilities */
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int cdrom_get_last_track(cdrom_file *file);
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int cdrom_get_adr_control(cdrom_file *file, int track);
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int cdrom_get_track_type(cdrom_file *file, int track);
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const cdrom_toc *cdrom_get_toc(cdrom_file *file);
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/* extra utilities */
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void cdrom_convert_type_string_to_track_info(const char *typestring, cdrom_track_info *info);
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void cdrom_convert_subtype_string_to_track_info(const char *typestring, cdrom_track_info *info);
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const char *cdrom_get_type_string(const cdrom_track_info *info);
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const char *cdrom_get_subtype_string(const cdrom_track_info *info);
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chd_error cdrom_parse_metadata(chd_file *chd, cdrom_toc *toc);
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chd_error cdrom_write_metadata(chd_file *chd, const cdrom_toc *toc);
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/***************************************************************************
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INLINE FUNCTIONS
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***************************************************************************/
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INLINE UINT32 lba_to_msf(UINT32 lba)
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{
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UINT8 m, s, f;
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m = lba / (60 * 75);
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lba -= m * (60 * 75);
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s = lba / 75;
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f = lba % 75;
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return ((m / 10) << 20) | ((m % 10) << 16) |
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((s / 10) << 12) | ((s % 10) << 8) |
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((f / 10) << 4) | ((f % 10) << 0);
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}
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#endif // __CDROM_H__
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