filename | src/gdrom/gdrom.c |
changeset | 342:850502f0e8de |
prev | 245:a1d0655a88d3 |
next | 422:61a0598e07ff |
author | nkeynes |
date | Sun Feb 11 10:09:32 2007 +0000 (17 years ago) |
permissions | -rw-r--r-- |
last change | Bug 27: Implement opengl framebuffer objects Rewrite much of the final video output stage. Now uses generic "render buffers", implemented on GL using framebuffer objects + textures. |
file | annotate | diff | log | raw |
1.1 --- a/src/gdrom/gdrom.c Tue Dec 19 09:52:56 2006 +00001.2 +++ b/src/gdrom/gdrom.c Sun Feb 11 10:09:32 2007 +00001.3 @@ -1,5 +1,6 @@1.4 +1.5 /**1.6 - * $Id: gdrom.c,v 1.11 2006-12-19 09:52:56 nkeynes Exp $1.7 + * $Id: gdrom.c,v 1.12 2007-01-31 10:58:42 nkeynes Exp $1.8 *1.9 * GD-Rom access functions.1.10 *1.11 @@ -24,13 +25,10 @@1.12 #include "gdrom/packet.h"1.13 #include "dream.h"1.15 -static void gdrom_image_destroy( gdrom_disc_t );1.16 -static gdrom_error_t gdrom_image_read_sectors( gdrom_disc_t, uint32_t, uint32_t, int, char *, uint32_t * );1.17 +extern gdrom_disc_t gdrom_disc;1.19 gdrom_image_class_t gdrom_image_classes[] = { &linux_device_class, &nrg_image_class, &cdi_image_class, NULL };1.21 -gdrom_disc_t gdrom_disc = NULL;1.22 -1.23 char *gdrom_mode_names[] = { "Mode1", "Mode2", "XA 1", "XA2", "Audio", "GD-Rom" };1.24 uint32_t gdrom_sector_size[] = { 2048, 2336, 2048, 2324, 2352, 2336 };1.26 @@ -88,204 +86,11 @@1.27 return NULL;1.28 }1.30 -1.31 -gdrom_disc_t gdrom_image_new( FILE *file )1.32 -{1.33 - struct gdrom_disc *disc = (struct gdrom_disc *)calloc(1, sizeof(struct gdrom_disc));1.34 - if( disc == NULL )1.35 - return NULL;1.36 - disc->read_sectors = gdrom_image_read_sectors;1.37 - disc->close = gdrom_image_destroy;1.38 - disc->disc_type = IDE_DISC_CDROM;1.39 - disc->file = file;1.40 - return disc;1.41 -}1.42 -1.43 -static void gdrom_image_destroy( gdrom_disc_t disc )1.44 -{1.45 - if( disc->file != NULL ) {1.46 - fclose(disc->file);1.47 - disc->file = NULL;1.48 - }1.49 - free( disc );1.50 -}1.51 -1.52 -static gdrom_error_t gdrom_image_read_sectors( gdrom_disc_t disc, uint32_t sector,1.53 - uint32_t sector_count, int mode, char *buf,1.54 - uint32_t *length )1.55 -{1.56 - int i, file_offset, read_len;1.57 - struct gdrom_track *track = NULL;1.58 -1.59 - for( i=0; i<disc->track_count; i++ ) {1.60 - if( disc->track[i].lba <= sector &&1.61 - (sector + sector_count) <= (disc->track[i].lba + disc->track[i].sector_count) ) {1.62 - track = &disc->track[i];1.63 - break;1.64 - }1.65 - }1.66 - if( track == NULL )1.67 - return PKT_ERR_BADREAD;1.68 -1.69 - file_offset = track->offset + track->sector_size * (sector - track->lba);1.70 - read_len = track->sector_size * sector_count;1.71 -1.72 - switch( mode ) {1.73 - case GDROM_GD:1.74 - // Temporarily comment this out - it's wrong, but...1.75 - // if( track->mode != GDROM_GD )1.76 - // return PKT_ERR_BADREADMODE;1.77 - // break;1.78 - case GDROM_MODE1:1.79 - case GDROM_MODE2_XA1:1.80 - switch( track->mode ) {1.81 - case GDROM_MODE1:1.82 - case GDROM_MODE2_XA1:1.83 - fseek( disc->file, file_offset, SEEK_SET );1.84 - fread( buf, track->sector_size, sector_count, disc->file );1.85 - break;1.86 - case GDROM_MODE2:1.87 - read_len = sector_count * 2048;1.88 - file_offset += 8; /* skip the subheader */1.89 - while( sector_count > 0 ) {1.90 - fseek( disc->file, file_offset, SEEK_SET );1.91 - fread( buf, 2048, 1, disc->file );1.92 - file_offset += track->sector_size;1.93 - buf += 2048;1.94 - sector_count--;1.95 - }1.96 - break;1.97 - default:1.98 - return PKT_ERR_BADREADMODE;1.99 - }1.100 - break;1.101 - default:1.102 - return PKT_ERR_BADREADMODE;1.103 - }1.104 -1.105 - *length = read_len;1.106 - return PKT_ERR_OK;1.107 -}1.108 -1.109 -uint32_t gdrom_read_sectors( uint32_t sector, uint32_t sector_count,1.110 - int mode, char *buf, uint32_t *length )1.111 -{1.112 - if( gdrom_disc == NULL )1.113 - return PKT_ERR_NODISC; /* No media */1.114 - return gdrom_disc->read_sectors( gdrom_disc, sector, sector_count, mode, buf, length );1.115 -}1.116 -1.117 -1.118 -void gdrom_dump_disc_info( gdrom_disc_t disc ) {1.119 - int i;1.120 - int last_session = disc->track[disc->track_count-1].session;1.121 - gboolean is_bootable = FALSE;1.122 -1.123 - INFO( "Disc ID: %s, %d tracks in %d sessions", disc->mcn, disc->track_count,1.124 - disc->track[disc->track_count-1].session + 1 );1.125 - if( last_session > 0 ) {1.126 - /* Boot track is the first data track of the last session, provided that it1.127 - * cannot be a single-session disc.1.128 - */1.129 - int boot_track = -1;1.130 - for( i=disc->track_count-1; i>=0 && disc->track[i].session == last_session; i-- ) {1.131 - if( disc->track[i].flags & TRACK_DATA ) {1.132 - boot_track = i;1.133 - }1.134 - }1.135 - if( boot_track != -1 ) {1.136 - char boot_sector[2048];1.137 - uint32_t length = sizeof(boot_sector);1.138 - if( disc->read_sectors( disc, disc->track[boot_track].lba, 1, GDROM_MODE1,1.139 - boot_sector, &length ) == PKT_ERR_OK ) {1.140 - bootstrap_dump(boot_sector, FALSE);1.141 - is_bootable = TRUE;1.142 - }1.143 - }1.144 - }1.145 - if( !is_bootable )1.146 - WARN( "Disc does not appear to be bootable" );1.147 -}1.148 -1.149 -gdrom_error_t gdrom_get_toc( char *buf )1.150 -{1.151 - struct gdrom_toc *toc = (struct gdrom_toc *)buf;1.152 - int i;1.153 -1.154 - if( gdrom_disc == NULL )1.155 - return PKT_ERR_NODISC;1.156 -1.157 - for( i=0; i<gdrom_disc->track_count; i++ ) {1.158 - toc->track[i] = htonl( gdrom_disc->track[i].lba ) | gdrom_disc->track[i].flags;1.159 - }1.160 - toc->first = 0x0100 | gdrom_disc->track[0].flags;1.161 - toc->last = (gdrom_disc->track_count<<8) | gdrom_disc->track[i-1].flags;1.162 - toc->leadout = htonl(gdrom_disc->track[i-1].lba + gdrom_disc->track[i-1].sector_count) |1.163 - gdrom_disc->track[i-1].flags;1.164 - for( ;i<99; i++ )1.165 - toc->track[i] = 0xFFFFFFFF;1.166 - return PKT_ERR_OK;1.167 -}1.168 -1.169 -gdrom_error_t gdrom_get_info( char *buf, int session )1.170 -{1.171 - if( gdrom_disc == NULL )1.172 - return PKT_ERR_NODISC;1.173 - struct gdrom_track *last_track = &gdrom_disc->track[gdrom_disc->track_count-1];1.174 - unsigned int end_of_disc = last_track->lba + last_track->sector_count;1.175 - int i;1.176 - buf[0] = 0x01; /* Disc status? */1.177 - buf[1] = 0;1.178 -1.179 - if( session == 0 ) {1.180 - buf[2] = last_track->session+1; /* last session */1.181 - buf[3] = (end_of_disc >> 16) & 0xFF;1.182 - buf[4] = (end_of_disc >> 8) & 0xFF;1.183 - buf[5] = end_of_disc & 0xFF;1.184 - return PKT_ERR_OK;1.185 - } else {1.186 - session--;1.187 - for( i=0; i<gdrom_disc->track_count; i++ ) {1.188 - if( gdrom_disc->track[i].session == session ) {1.189 - buf[2] = i+1; /* first track of session */1.190 - buf[3] = (gdrom_disc->track[i].lba >> 16) & 0xFF;1.191 - buf[4] = (gdrom_disc->track[i].lba >> 8) & 0xFF;1.192 - buf[5] = gdrom_disc->track[i].lba & 0xFF;1.193 - return PKT_ERR_OK;1.194 - }1.195 - }1.196 - return PKT_ERR_BADFIELD; /* No such session */1.197 - }1.198 -1.199 -}1.200 -1.201 -gdrom_track_t gdrom_get_track( int trackno ) {1.202 - if( gdrom_disc == NULL || trackno < 1 || trackno > 99 ) {1.203 - return NULL;1.204 - } else {1.205 - return &gdrom_disc->track[trackno-1];1.206 - }1.207 -}1.208 -1.209 -uint8_t gdrom_get_track_no_by_lba( uint32_t lba ) {1.210 - int i;1.211 - if( gdrom_disc != NULL ) {1.212 - for( i=0; i<gdrom_disc->track_count; i++ ) {1.213 - if( gdrom_disc->track[i].lba <= lba &&1.214 - lba <= (gdrom_disc->track[i].lba + gdrom_disc->track[i].sector_count) ) {1.215 - return i+1;1.216 - }1.217 - }1.218 - }1.219 - return -1;1.220 -}1.221 -1.222 void gdrom_mount_disc( gdrom_disc_t disc )1.223 {1.224 gdrom_unmount_disc();1.225 gdrom_disc = disc;1.226 - idereg.disc = disc->disc_type | IDE_DISC_READY;1.227 - gdrom_dump_disc_info( disc );1.228 + gdrom_image_dump_info( disc );1.229 }1.231 gdrom_disc_t gdrom_mount_image( const gchar *filename )1.232 @@ -302,10 +107,6 @@1.233 gdrom_disc->close(gdrom_disc);1.234 }1.235 gdrom_disc = NULL;1.236 - idereg.disc = IDE_DISC_NONE;1.237 +1.238 }1.240 -gboolean gdrom_is_mounted( void )1.241 -{1.242 - return gdrom_disc != NULL;1.243 -}
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