nkeynes@125 | 1 | /**
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nkeynes@143 | 2 | * $Id: gdrom.h,v 1.4 2006-05-03 12:52:38 nkeynes Exp $
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nkeynes@125 | 3 | *
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nkeynes@125 | 4 | * This file defines the structures and functions used by the GD-Rom
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nkeynes@125 | 5 | * disc driver. (ie, the modules that supply a CD image to be used by the
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nkeynes@125 | 6 | * system).
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nkeynes@125 | 7 | *
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nkeynes@125 | 8 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@125 | 9 | *
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nkeynes@125 | 10 | * This program is free software; you can redistribute it and/or modify
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nkeynes@125 | 11 | * it under the terms of the GNU General Public License as published by
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nkeynes@125 | 12 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@125 | 13 | * (at your option) any later version.
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nkeynes@125 | 14 | *
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nkeynes@125 | 15 | * This program is distributed in the hope that it will be useful,
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nkeynes@125 | 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@125 | 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@125 | 18 | * GNU General Public License for more details.
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nkeynes@125 | 19 | */
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nkeynes@125 | 20 |
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nkeynes@125 | 21 | #ifndef dream_gdrom_H
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nkeynes@125 | 22 | #define dream_gdrom_H 1
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nkeynes@125 | 23 |
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nkeynes@125 | 24 | #include "dream.h"
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nkeynes@125 | 25 |
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nkeynes@138 | 26 | struct gdrom_toc {
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nkeynes@142 | 27 | uint32_t track[99];
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nkeynes@125 | 28 | uint32_t first, last, leadout;
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nkeynes@138 | 29 | };
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nkeynes@138 | 30 |
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nkeynes@138 | 31 | #define GDROM_PREGAP 150 /* Sectors */
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nkeynes@138 | 32 |
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nkeynes@138 | 33 | extern uint32_t gdrom_sector_size[];
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nkeynes@138 | 34 | #define GDROM_SECTOR_SIZE(x) gdrom_sector_size[x]
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nkeynes@138 | 35 | typedef enum {
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nkeynes@138 | 36 | GDROM_MODE1,
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nkeynes@138 | 37 | GDROM_MODE2,
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nkeynes@138 | 38 | GDROM_MODE2_XA1,
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nkeynes@138 | 39 | GDROM_MODE2_XA2,
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nkeynes@138 | 40 | GDROM_CDDA,
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nkeynes@143 | 41 | GDROM_GD,
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nkeynes@143 | 42 | GDROM_RAW
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nkeynes@138 | 43 | } gdrom_track_mode_t;
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nkeynes@138 | 44 |
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nkeynes@138 | 45 | /* The disc register indicates the current contents of the drive. When open
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nkeynes@138 | 46 | * contains 0x06.
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nkeynes@138 | 47 | */
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nkeynes@138 | 48 | #define IDE_DISC_AUDIO 0x00
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nkeynes@138 | 49 | #define IDE_DISC_NONE 0x06
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nkeynes@138 | 50 | #define IDE_DISC_CDROM 0x20
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nkeynes@138 | 51 | #define IDE_DISC_GDROM 0x80
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nkeynes@138 | 52 | #define IDE_DISC_READY 0x01 /* ored with above */
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nkeynes@138 | 53 | #define IDE_DISC_IDLE 0x02 /* ie spun-down */
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nkeynes@138 | 54 |
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nkeynes@142 | 55 | #define TRACK_PRE_EMPHASIS 0x10
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nkeynes@142 | 56 | #define TRACK_COPY_PERMITTED 0x20
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nkeynes@142 | 57 | #define TRACK_DATA 0x40
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nkeynes@142 | 58 | #define TRACK_FOUR_CHANNEL 0x80
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nkeynes@142 | 59 |
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nkeynes@138 | 60 | struct gdrom_track {
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nkeynes@138 | 61 | gdrom_track_mode_t mode;
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nkeynes@142 | 62 | uint8_t flags; /* Track flags */
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nkeynes@138 | 63 | int session; /* session # containing this track */
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nkeynes@138 | 64 | uint32_t lba; /* start sector address */
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nkeynes@138 | 65 | uint32_t sector_size; /* For convenience, determined by mode */
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nkeynes@138 | 66 | uint32_t sector_count;
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nkeynes@138 | 67 | uint32_t offset; /* File offset of start of track - image files only */
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nkeynes@138 | 68 | };
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nkeynes@125 | 69 |
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nkeynes@125 | 70 |
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nkeynes@125 | 71 | typedef struct gdrom_disc {
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nkeynes@138 | 72 | int disc_type;
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nkeynes@138 | 73 | int track_count;
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nkeynes@138 | 74 | struct gdrom_track track[99];
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nkeynes@138 | 75 | gchar mcn[14]; /* Media catalogue number */
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nkeynes@138 | 76 | const gchar *filename; /* Image filename */
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nkeynes@138 | 77 | FILE *file; /* Stream, for image files */
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nkeynes@138 | 78 | uint32_t (*read_sectors)( struct gdrom_disc *disc,
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nkeynes@138 | 79 | uint32_t lba, uint32_t sector_count,
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nkeynes@143 | 80 | int mode, char *buf, uint32_t *length );
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nkeynes@138 | 81 | void (*close)( struct gdrom_disc *disc );
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nkeynes@125 | 82 | } *gdrom_disc_t;
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nkeynes@125 | 83 |
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nkeynes@138 | 84 | /**
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nkeynes@138 | 85 | * Construct a new image file using the default methods.
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nkeynes@138 | 86 | */
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nkeynes@138 | 87 | gdrom_disc_t gdrom_image_new( FILE *file );
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nkeynes@125 | 88 |
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nkeynes@138 | 89 | /**
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nkeynes@138 | 90 | * Open an image file
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nkeynes@138 | 91 | */
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nkeynes@138 | 92 | gdrom_disc_t gdrom_image_open( const gchar *filename );
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nkeynes@138 | 93 | gdrom_disc_t nrg_image_open( const gchar *filename );
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nkeynes@138 | 94 |
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nkeynes@138 | 95 | /**
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nkeynes@138 | 96 | * Retrieve the disc table of contents, and write it into the buffer in the
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nkeynes@138 | 97 | * format expected by the DC.
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nkeynes@138 | 98 | * @return TRUE on success, FALSE on failure (eg no disc mounted)
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nkeynes@138 | 99 | */
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nkeynes@138 | 100 | gboolean gdrom_get_toc( char *buf );
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nkeynes@138 | 101 |
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nkeynes@138 | 102 | /**
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nkeynes@138 | 103 | * Shortcut to open and mount an image file
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nkeynes@138 | 104 | */
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nkeynes@138 | 105 | gdrom_disc_t gdrom_mount_image( const gchar *filename );
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nkeynes@138 | 106 |
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nkeynes@138 | 107 | void gdrom_mount_disc( gdrom_disc_t disc );
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nkeynes@138 | 108 |
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nkeynes@138 | 109 | void gdrom_unmount_disc( void );
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nkeynes@138 | 110 |
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nkeynes@138 | 111 | gboolean gdrom_is_mounted( void );
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nkeynes@138 | 112 |
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nkeynes@138 | 113 | uint32_t gdrom_read_sectors( uint32_t sector, uint32_t sector_count,
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nkeynes@143 | 114 | int mode, char *buf, uint32_t *length );
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nkeynes@125 | 115 |
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nkeynes@125 | 116 | #endif
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