filename | src/gdrom/gdi.c |
changeset | 1023:264e2fd90be8 |
prev | 836:d314bf370949 |
author | nkeynes |
date | Mon Jun 08 04:12:21 2009 +0000 (14 years ago) |
permissions | -rw-r--r-- |
last change | General cleanup of the GD-rom subsystem - merge gdrom_image_t and gdrom_disc_t - Abstract MMC devices using a lower-level scsi transport - OSX: only look at the whole disc device, and ignore partitions |
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nkeynes@492 | 1 | /** |
nkeynes@561 | 2 | * $Id$ |
nkeynes@492 | 3 | * |
nkeynes@492 | 4 | * NullDC GDI image format |
nkeynes@492 | 5 | * |
nkeynes@492 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@492 | 7 | * |
nkeynes@492 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@492 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@492 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@492 | 11 | * (at your option) any later version. |
nkeynes@492 | 12 | * |
nkeynes@492 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@492 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@492 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@492 | 16 | * GNU General Public License for more details. |
nkeynes@492 | 17 | */ |
nkeynes@492 | 18 | |
nkeynes@492 | 19 | #include <stdlib.h> |
nkeynes@492 | 20 | #include <stdio.h> |
nkeynes@492 | 21 | #include <stdint.h> |
nkeynes@759 | 22 | #include <string.h> |
nkeynes@492 | 23 | #include <fcntl.h> |
nkeynes@492 | 24 | #include <errno.h> |
nkeynes@492 | 25 | #include <sys/stat.h> |
nkeynes@492 | 26 | #include <glib/gutils.h> |
nkeynes@678 | 27 | #include "gdrom/gddriver.h" |
nkeynes@492 | 28 | |
nkeynes@492 | 29 | |
nkeynes@492 | 30 | static gboolean gdi_image_is_valid( FILE *f ); |
nkeynes@492 | 31 | static gdrom_disc_t gdi_image_open( const gchar *filename, FILE *f ); |
nkeynes@492 | 32 | |
nkeynes@492 | 33 | struct gdrom_image_class gdi_image_class = { "NullDC GD-Rom Image", "gdi", |
nkeynes@736 | 34 | gdi_image_is_valid, gdi_image_open }; |
nkeynes@492 | 35 | |
nkeynes@492 | 36 | static gboolean gdi_image_is_valid( FILE *f ) |
nkeynes@492 | 37 | { |
nkeynes@492 | 38 | char line[512]; |
nkeynes@492 | 39 | uint32_t track_count; |
nkeynes@736 | 40 | |
nkeynes@492 | 41 | fseek(f, 0, SEEK_SET); |
nkeynes@492 | 42 | if( fgets( line, sizeof(line), f ) == NULL ) { |
nkeynes@736 | 43 | return FALSE; |
nkeynes@492 | 44 | } |
nkeynes@492 | 45 | track_count = strtoul(line, NULL, 0); |
nkeynes@492 | 46 | if( track_count == 0 || track_count > 99 ) { |
nkeynes@736 | 47 | return FALSE; |
nkeynes@492 | 48 | } |
nkeynes@492 | 49 | return TRUE; |
nkeynes@492 | 50 | } |
nkeynes@492 | 51 | |
nkeynes@492 | 52 | static gdrom_disc_t gdi_image_open( const gchar *filename, FILE *f ) |
nkeynes@492 | 53 | { |
nkeynes@492 | 54 | int i; |
nkeynes@492 | 55 | uint32_t track_count; |
nkeynes@492 | 56 | gdrom_disc_t disc; |
nkeynes@492 | 57 | struct stat st; |
nkeynes@492 | 58 | char line[512]; |
nkeynes@836 | 59 | int session = 0; |
nkeynes@492 | 60 | gchar *dirname; |
nkeynes@492 | 61 | |
nkeynes@492 | 62 | fseek(f, 0, SEEK_SET); |
nkeynes@736 | 63 | |
nkeynes@492 | 64 | if( fgets( line, sizeof(line), f ) == NULL ) { |
nkeynes@736 | 65 | return FALSE; |
nkeynes@492 | 66 | } |
nkeynes@492 | 67 | track_count = strtoul(line, NULL, 0); |
nkeynes@492 | 68 | if( track_count == 0 || track_count > 99 ) { |
nkeynes@736 | 69 | return NULL; |
nkeynes@492 | 70 | } |
nkeynes@492 | 71 | |
nkeynes@492 | 72 | disc = gdrom_image_new(filename, f); |
nkeynes@492 | 73 | if( disc == NULL ) { |
nkeynes@736 | 74 | ERROR("Unable to allocate memory!"); |
nkeynes@736 | 75 | return NULL; |
nkeynes@492 | 76 | } |
nkeynes@492 | 77 | dirname = g_path_get_dirname(filename); |
nkeynes@1023 | 78 | disc->disc_type = IDE_DISC_GDROM; |
nkeynes@1023 | 79 | disc->track_count = track_count; |
nkeynes@492 | 80 | for( i=0; i<track_count; i++ ) { |
nkeynes@736 | 81 | int track_no, start_lba, flags, size, offset; |
nkeynes@736 | 82 | char filename[256]; |
nkeynes@492 | 83 | |
nkeynes@736 | 84 | if( fgets( line, sizeof(line), f ) == NULL ) { |
nkeynes@1023 | 85 | disc->destroy(disc,FALSE); |
nkeynes@736 | 86 | return NULL; |
nkeynes@736 | 87 | } |
nkeynes@736 | 88 | sscanf( line, "%d %d %d %d %s %d", &track_no, &start_lba, &flags, &size, |
nkeynes@736 | 89 | filename, &offset ); |
nkeynes@736 | 90 | if( start_lba >= 45000 ) { |
nkeynes@836 | 91 | session = 1; |
nkeynes@736 | 92 | } |
nkeynes@1023 | 93 | disc->track[i].session = session; |
nkeynes@1023 | 94 | disc->track[i].lba = start_lba + 150; // 2-second offset |
nkeynes@1023 | 95 | disc->track[i].flags = (flags & 0x0F)<<4; |
nkeynes@1023 | 96 | disc->track[i].sector_size = size; |
nkeynes@736 | 97 | if( strcasecmp( filename, "none" ) == 0 ) { |
nkeynes@1023 | 98 | disc->track[i].file = NULL; |
nkeynes@1023 | 99 | disc->track[i].sector_count = 0; |
nkeynes@1023 | 100 | disc->track[i].mode = GDROM_MODE1; |
nkeynes@736 | 101 | } else { |
nkeynes@736 | 102 | gchar *pathname = g_strdup_printf( "%s%c%s", dirname, G_DIR_SEPARATOR, filename ); |
nkeynes@1023 | 103 | disc->track[i].file = fopen( pathname, "ro" ); |
nkeynes@736 | 104 | g_free(pathname); |
nkeynes@1023 | 105 | if( disc->track[i].file == NULL ) { |
nkeynes@1023 | 106 | disc->destroy(disc,FALSE); |
nkeynes@736 | 107 | g_free(dirname); |
nkeynes@736 | 108 | return NULL; |
nkeynes@736 | 109 | } |
nkeynes@1023 | 110 | fstat( fileno(disc->track[i].file), &st ); |
nkeynes@1023 | 111 | disc->track[i].sector_count = st.st_size / size; |
nkeynes@1023 | 112 | if( disc->track[i].flags & TRACK_DATA ) { |
nkeynes@736 | 113 | /* Data track */ |
nkeynes@736 | 114 | switch(size) { |
nkeynes@1023 | 115 | case 2048: disc->track[i].mode = GDROM_MODE1; break; |
nkeynes@1023 | 116 | case 2336: disc->track[i].mode = GDROM_SEMIRAW_MODE2; break; |
nkeynes@1023 | 117 | case 2352: disc->track[i].mode = GDROM_RAW_XA; break; |
nkeynes@736 | 118 | default: |
nkeynes@1023 | 119 | disc->destroy(disc,FALSE); |
nkeynes@736 | 120 | g_free(dirname); |
nkeynes@736 | 121 | return NULL; |
nkeynes@736 | 122 | } |
nkeynes@736 | 123 | } else { |
nkeynes@736 | 124 | /* Audio track */ |
nkeynes@1023 | 125 | disc->track[i].mode = GDROM_CDDA; |
nkeynes@736 | 126 | if( size != 2352 ) { |
nkeynes@1023 | 127 | disc->destroy(disc,FALSE); |
nkeynes@736 | 128 | g_free(dirname); |
nkeynes@736 | 129 | return NULL; |
nkeynes@736 | 130 | } |
nkeynes@736 | 131 | } |
nkeynes@736 | 132 | } |
nkeynes@1023 | 133 | disc->track[i].offset = offset; |
nkeynes@492 | 134 | } |
nkeynes@492 | 135 | g_free(dirname); |
nkeynes@492 | 136 | return disc; |
nkeynes@492 | 137 | } |
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