src/cdrom/dc/SDL_syscdrom.c

   1 /*
   2     SDL - Simple DirectMedia Layer
   3     Copyright (C) 1997-2009 Sam Lantinga
   4
   5     This library is free software; you can redistribute it and/or
   6     modify it under the terms of the GNU Lesser General Public
   7     License as published by the Free Software Foundation; either
   8     version 2.1 of the License, or (at your option) any later version.
   9
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public
  16     License along with this library; if not, write to the Free Software
  17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19     Sam Lantinga
  20     slouken@libsdl.org
  21 */
  22 #include "SDL_config.h"
  23
  24 #ifdef SDL_CDROM_DC
  25
  26 /* Functions for system-level CD-ROM audio control */
  27
  28 #include <dc/cdrom.h>
  29 #include <dc/spu.h>
  30
  31 #include "SDL_cdrom.h"
  32 #include "../SDL_syscdrom.h"
  33
  34 /* The system-dependent CD control functions */
  35 static const char *SDL_SYS_CDName(int drive);
  36 static int SDL_SYS_CDOpen(int drive);
  37 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
  38 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
  39 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
  40 static int SDL_SYS_CDPause(SDL_CD *cdrom);
  41 static int SDL_SYS_CDResume(SDL_CD *cdrom);
  42 static int SDL_SYS_CDStop(SDL_CD *cdrom);
  43 static int SDL_SYS_CDEject(SDL_CD *cdrom);
  44 static void SDL_SYS_CDClose(SDL_CD *cdrom);
  45
  46
  47 int  SDL_SYS_CDInit(void)
  48 {
  49         /* Fill in our driver capabilities */
  50         SDL_CDcaps.Name = SDL_SYS_CDName;
  51         SDL_CDcaps.Open = SDL_SYS_CDOpen;
  52         SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
  53         SDL_CDcaps.Status = SDL_SYS_CDStatus;
  54         SDL_CDcaps.Play = SDL_SYS_CDPlay;
  55         SDL_CDcaps.Pause = SDL_SYS_CDPause;
  56         SDL_CDcaps.Resume = SDL_SYS_CDResume;
  57         SDL_CDcaps.Stop = SDL_SYS_CDStop;
  58         SDL_CDcaps.Eject = SDL_SYS_CDEject;
  59         SDL_CDcaps.Close = SDL_SYS_CDClose;
  60
  61         return(0);
  62 }
  63
  64 static const char *SDL_SYS_CDName(int drive)
  65 {
  66         return "/cd";
  67 }
  68
  69 static int SDL_SYS_CDOpen(int drive)
  70 {
  71         return(drive);
  72 }
  73
  74 #define TRACK_CDDA      0
  75 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
  76 {
  77         CDROM_TOC toc;
  78         int ret,i;
  79
  80         ret = cdrom_read_toc(&toc,0);
  81         if (ret!=ERR_OK) {
  82                 return -1;
  83         }
  84
  85         cdrom->numtracks = TOC_TRACK(toc.last)-TOC_TRACK(toc.first)+1;
  86         for(i=0;i<cdrom->numtracks;i++) {
  87                 unsigned long entry = toc.entry[i];
  88                 cdrom->track[i].id = i+1;
  89                 cdrom->track[i].type = (TOC_CTRL(toc.entry[i])==TRACK_CDDA)?SDL_AUDIO_TRACK:SDL_DATA_TRACK;
  90                 cdrom->track[i].offset = TOC_LBA(entry)-150;
  91                 cdrom->track[i].length = TOC_LBA((i+1<toc.last)?toc.entry[i+1]:toc.leadout_sector)-TOC_LBA(entry);
  92         }
  93
  94         return 0;
  95 }
  96
  97 /* Get CD-ROM status */
  98 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
  99 {
 100         int ret,dc_status,disc_type;
 101
 102         ret = cdrom_get_status(&dc_status,&disc_type);
 103         if (ret!=ERR_OK) return CD_ERROR;
 104
 105         switch(dc_status) {
 106 //      case CD_STATUS_BUSY:
 107         case CD_STATUS_PAUSED:
 108                 return CD_PAUSED;
 109         case CD_STATUS_STANDBY:
 110                 return CD_STOPPED;
 111         case CD_STATUS_PLAYING:
 112                 return CD_PLAYING;
 113 //      case CD_STATUS_SEEKING:
 114 //      case CD_STATUS_SCANING:
 115         case CD_STATUS_OPEN:
 116         case CD_STATUS_NO_DISC:
 117                 return CD_TRAYEMPTY;
 118         default:
 119                 return  CD_ERROR;
 120         }
 121 }
 122
 123 /* Start play */
 124 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
 125 {
 126         int ret = cdrom_cdda_play(start-150,start-150+length,1,CDDA_SECTORS);
 127         return ret==ERR_OK?0:-1;
 128 }
 129
 130 /* Pause play */
 131 static int SDL_SYS_CDPause(SDL_CD *cdrom)
 132 {
 133         int ret=cdrom_cdda_pause();
 134         return ret==ERR_OK?0:-1;
 135 }
 136
 137 /* Resume play */
 138 static int SDL_SYS_CDResume(SDL_CD *cdrom)
 139 {
 140         int ret=cdrom_cdda_resume();
 141         return ret==ERR_OK?0:-1;
 142 }
 143
 144 /* Stop play */
 145 static int SDL_SYS_CDStop(SDL_CD *cdrom)
 146 {
 147         int ret=cdrom_spin_down();
 148         return ret==ERR_OK?0:-1;
 149 }
 150
 151 /* Eject the CD-ROM */
 152 static int SDL_SYS_CDEject(SDL_CD *cdrom)
 153 {
 154         return -1;
 155 }
 156
 157 /* Close the CD-ROM handle */
 158 static void SDL_SYS_CDClose(SDL_CD *cdrom)
 159 {
 160 }
 161
 162 void SDL_SYS_CDQuit(void)
 163 {
 164
 165 }
 166
 167 #endif /* SDL_CDROM_DC */