1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 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 (at) 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 */ 168
