filename | src/gdrom/gdrom.h |
changeset | 149:d88dd2e9a190 |
prev | 143:9446fb6df0c5 |
next | 152:d42a4c5cc709 |
author | nkeynes |
date | Tue May 23 13:10:28 2006 +0000 (17 years ago) |
permissions | -rw-r--r-- |
last change | Add texcache invalidates on direct writes to 64-bit vram. Technically we should do it on direct writes to 32-bit vram as well, but noone (sane) is going to try to write a texture there... |
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nkeynes@125 | 1 | /** |
nkeynes@149 | 2 | * $Id: gdrom.h,v 1.5 2006-05-20 06:24:49 nkeynes Exp $ |
nkeynes@125 | 3 | * |
nkeynes@125 | 4 | * This file defines the structures and functions used by the GD-Rom |
nkeynes@125 | 5 | * disc driver. (ie, the modules that supply a CD image to be used by the |
nkeynes@125 | 6 | * system). |
nkeynes@125 | 7 | * |
nkeynes@125 | 8 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@125 | 9 | * |
nkeynes@125 | 10 | * This program is free software; you can redistribute it and/or modify |
nkeynes@125 | 11 | * it under the terms of the GNU General Public License as published by |
nkeynes@125 | 12 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@125 | 13 | * (at your option) any later version. |
nkeynes@125 | 14 | * |
nkeynes@125 | 15 | * This program is distributed in the hope that it will be useful, |
nkeynes@125 | 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@125 | 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@125 | 18 | * GNU General Public License for more details. |
nkeynes@125 | 19 | */ |
nkeynes@125 | 20 | |
nkeynes@125 | 21 | #ifndef dream_gdrom_H |
nkeynes@125 | 22 | #define dream_gdrom_H 1 |
nkeynes@125 | 23 | |
nkeynes@125 | 24 | #include "dream.h" |
nkeynes@125 | 25 | |
nkeynes@149 | 26 | typedef uint16_t gdrom_error_t; |
nkeynes@149 | 27 | |
nkeynes@138 | 28 | struct gdrom_toc { |
nkeynes@142 | 29 | uint32_t track[99]; |
nkeynes@125 | 30 | uint32_t first, last, leadout; |
nkeynes@138 | 31 | }; |
nkeynes@138 | 32 | |
nkeynes@138 | 33 | #define GDROM_PREGAP 150 /* Sectors */ |
nkeynes@138 | 34 | |
nkeynes@138 | 35 | extern uint32_t gdrom_sector_size[]; |
nkeynes@138 | 36 | #define GDROM_SECTOR_SIZE(x) gdrom_sector_size[x] |
nkeynes@138 | 37 | typedef enum { |
nkeynes@138 | 38 | GDROM_MODE1, |
nkeynes@138 | 39 | GDROM_MODE2, |
nkeynes@138 | 40 | GDROM_MODE2_XA1, |
nkeynes@138 | 41 | GDROM_MODE2_XA2, |
nkeynes@138 | 42 | GDROM_CDDA, |
nkeynes@143 | 43 | GDROM_GD, |
nkeynes@143 | 44 | GDROM_RAW |
nkeynes@138 | 45 | } gdrom_track_mode_t; |
nkeynes@138 | 46 | |
nkeynes@138 | 47 | /* The disc register indicates the current contents of the drive. When open |
nkeynes@138 | 48 | * contains 0x06. |
nkeynes@138 | 49 | */ |
nkeynes@138 | 50 | #define IDE_DISC_AUDIO 0x00 |
nkeynes@138 | 51 | #define IDE_DISC_NONE 0x06 |
nkeynes@138 | 52 | #define IDE_DISC_CDROM 0x20 |
nkeynes@138 | 53 | #define IDE_DISC_GDROM 0x80 |
nkeynes@138 | 54 | #define IDE_DISC_READY 0x01 /* ored with above */ |
nkeynes@138 | 55 | #define IDE_DISC_IDLE 0x02 /* ie spun-down */ |
nkeynes@138 | 56 | |
nkeynes@142 | 57 | #define TRACK_PRE_EMPHASIS 0x10 |
nkeynes@142 | 58 | #define TRACK_COPY_PERMITTED 0x20 |
nkeynes@142 | 59 | #define TRACK_DATA 0x40 |
nkeynes@142 | 60 | #define TRACK_FOUR_CHANNEL 0x80 |
nkeynes@142 | 61 | |
nkeynes@138 | 62 | struct gdrom_track { |
nkeynes@138 | 63 | gdrom_track_mode_t mode; |
nkeynes@142 | 64 | uint8_t flags; /* Track flags */ |
nkeynes@138 | 65 | int session; /* session # containing this track */ |
nkeynes@138 | 66 | uint32_t lba; /* start sector address */ |
nkeynes@138 | 67 | uint32_t sector_size; /* For convenience, determined by mode */ |
nkeynes@138 | 68 | uint32_t sector_count; |
nkeynes@138 | 69 | uint32_t offset; /* File offset of start of track - image files only */ |
nkeynes@138 | 70 | }; |
nkeynes@125 | 71 | |
nkeynes@125 | 72 | |
nkeynes@125 | 73 | typedef struct gdrom_disc { |
nkeynes@138 | 74 | int disc_type; |
nkeynes@138 | 75 | int track_count; |
nkeynes@138 | 76 | struct gdrom_track track[99]; |
nkeynes@138 | 77 | gchar mcn[14]; /* Media catalogue number */ |
nkeynes@138 | 78 | const gchar *filename; /* Image filename */ |
nkeynes@138 | 79 | FILE *file; /* Stream, for image files */ |
nkeynes@138 | 80 | uint32_t (*read_sectors)( struct gdrom_disc *disc, |
nkeynes@138 | 81 | uint32_t lba, uint32_t sector_count, |
nkeynes@143 | 82 | int mode, char *buf, uint32_t *length ); |
nkeynes@138 | 83 | void (*close)( struct gdrom_disc *disc ); |
nkeynes@125 | 84 | } *gdrom_disc_t; |
nkeynes@125 | 85 | |
nkeynes@138 | 86 | /** |
nkeynes@138 | 87 | * Construct a new image file using the default methods. |
nkeynes@138 | 88 | */ |
nkeynes@138 | 89 | gdrom_disc_t gdrom_image_new( FILE *file ); |
nkeynes@125 | 90 | |
nkeynes@138 | 91 | /** |
nkeynes@138 | 92 | * Open an image file |
nkeynes@138 | 93 | */ |
nkeynes@138 | 94 | gdrom_disc_t gdrom_image_open( const gchar *filename ); |
nkeynes@138 | 95 | gdrom_disc_t nrg_image_open( const gchar *filename ); |
nkeynes@138 | 96 | |
nkeynes@138 | 97 | /** |
nkeynes@138 | 98 | * Retrieve the disc table of contents, and write it into the buffer in the |
nkeynes@138 | 99 | * format expected by the DC. |
nkeynes@149 | 100 | * @return 0 on success, error code on failure (eg no disc mounted) |
nkeynes@138 | 101 | */ |
nkeynes@149 | 102 | gdrom_error_t gdrom_get_toc( char *buf ); |
nkeynes@149 | 103 | |
nkeynes@149 | 104 | /** |
nkeynes@149 | 105 | * Retrieve the short (6-byte) disc info, and write it into the buffer. |
nkeynes@149 | 106 | * @return 0 on success, error code on failure. |
nkeynes@149 | 107 | */ |
nkeynes@149 | 108 | gdrom_error_t gdrom_get_info( char *buf ); |
nkeynes@138 | 109 | |
nkeynes@138 | 110 | /** |
nkeynes@138 | 111 | * Shortcut to open and mount an image file |
nkeynes@138 | 112 | */ |
nkeynes@138 | 113 | gdrom_disc_t gdrom_mount_image( const gchar *filename ); |
nkeynes@138 | 114 | |
nkeynes@138 | 115 | void gdrom_mount_disc( gdrom_disc_t disc ); |
nkeynes@138 | 116 | |
nkeynes@138 | 117 | void gdrom_unmount_disc( void ); |
nkeynes@138 | 118 | |
nkeynes@138 | 119 | gboolean gdrom_is_mounted( void ); |
nkeynes@138 | 120 | |
nkeynes@138 | 121 | uint32_t gdrom_read_sectors( uint32_t sector, uint32_t sector_count, |
nkeynes@143 | 122 | int mode, char *buf, uint32_t *length ); |
nkeynes@125 | 123 | |
nkeynes@125 | 124 | #endif |
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