diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/cdrom/mint/SDL_syscdrom.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/cdrom/mint/SDL_syscdrom.c | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/cdrom/mint/SDL_syscdrom.c b/distrib/sdl-1.2.15/src/cdrom/mint/SDL_syscdrom.c new file mode 100644 index 0000000..0bc10ed --- /dev/null +++ b/distrib/sdl-1.2.15/src/cdrom/mint/SDL_syscdrom.c @@ -0,0 +1,317 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +#ifdef SDL_CDROM_MINT + +/* + Atari MetaDOS CD-ROM functions + + Patrice Mandin +*/ + +#include <errno.h> + +#include <mint/cdromio.h> +#include <mint/metados.h> + +#include "SDL_cdrom.h" +#include "../SDL_syscdrom.h" + +/* Some ioctl() errno values which occur when the tray is empty */ +#ifndef ENOMEDIUM +#define ENOMEDIUM ENOENT +#endif +#define ERRNO_TRAYEMPTY(errno) \ + ((errno == EIO) || (errno == ENOENT) || \ + (errno == EINVAL) || (errno == ENOMEDIUM)) + +/* The maximum number of CD-ROM drives we'll detect */ +#define MAX_DRIVES 32 + +typedef struct { + char device[3]; /* Physical device letter + ':' + '\0' */ + metaopen_t metaopen; /* Infos on opened drive */ +} metados_drive_t; + +static metados_drive_t metados_drives[MAX_DRIVES]; + +/* The system-dependent CD control functions */ +static const char *SDL_SYS_CDName(int drive); +static int SDL_SYS_CDOpen(int drive); +static void SDL_SYS_CDClose(SDL_CD *cdrom); +static int SDL_SYS_CDioctl(int id, int command, void *arg); +static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); +static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); +static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); +static int SDL_SYS_CDPause(SDL_CD *cdrom); +static int SDL_SYS_CDResume(SDL_CD *cdrom); +static int SDL_SYS_CDStop(SDL_CD *cdrom); +static int SDL_SYS_CDEject(SDL_CD *cdrom); + +int SDL_SYS_CDInit(void) +{ + metainit_t metainit={0,0,0,0}; + metaopen_t metaopen; + int i, handle; + struct cdrom_subchnl info; + + Metainit(&metainit); + if (metainit.version == NULL) { +#ifdef DEBUG_CDROM + fprintf(stderr, "MetaDOS not installed\n"); +#endif + return -1; + } + + if (metainit.drives_map == 0) { +#ifdef DEBUG_CDROM + fprintf(stderr, "No MetaDOS devices present\n"); +#endif + return -1; + } + + SDL_numcds = 0; + + for (i='A'; i<='Z'; i++) { + metados_drives[SDL_numcds].device[0] = 0; + metados_drives[SDL_numcds].device[1] = ':'; + metados_drives[SDL_numcds].device[2] = 0; + + if (metainit.drives_map & (1<<(i-'A'))) { + handle = Metaopen(i, &metaopen); + if (handle == 0) { + + info.cdsc_format = CDROM_MSF; + if ( (Metaioctl(i, METADOS_IOCTL_MAGIC, CDROMSUBCHNL, &info) == 0) || ERRNO_TRAYEMPTY(errno) ) { + metados_drives[SDL_numcds].device[0] = i; + ++SDL_numcds; + } + + Metaclose(i); + } + } + } + + /* Fill in our driver capabilities */ + SDL_CDcaps.Name = SDL_SYS_CDName; + SDL_CDcaps.Open = SDL_SYS_CDOpen; + SDL_CDcaps.Close = SDL_SYS_CDClose; + + SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; + SDL_CDcaps.Status = SDL_SYS_CDStatus; + SDL_CDcaps.Play = SDL_SYS_CDPlay; + SDL_CDcaps.Pause = SDL_SYS_CDPause; + SDL_CDcaps.Resume = SDL_SYS_CDResume; + SDL_CDcaps.Stop = SDL_SYS_CDStop; + SDL_CDcaps.Eject = SDL_SYS_CDEject; + + return 0; +} + +void SDL_SYS_CDQuit(void) +{ + SDL_numcds = 0; +} + +static const char *SDL_SYS_CDName(int drive) +{ + return(metados_drives[drive].device); +} + +static int SDL_SYS_CDOpen(int drive) +{ + int handle; + + handle = Metaopen(metados_drives[drive].device[0], &(metados_drives[drive].metaopen)); + if (handle == 0) { + return drive; + } + + return -1; +} + +static void SDL_SYS_CDClose(SDL_CD *cdrom) +{ + Metaclose(metados_drives[cdrom->id].device[0]); +} + +static int SDL_SYS_CDioctl(int id, int command, void *arg) +{ + int retval; + + retval = Metaioctl(metados_drives[id].device[0], METADOS_IOCTL_MAGIC, command, arg); + if ( retval < 0 ) { + SDL_SetError("ioctl() error: %s", strerror(errno)); + } + return(retval); +} + +static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) +{ + int i,okay; + struct cdrom_tochdr toc; + struct cdrom_tocentry entry; + + /* Use standard ioctl() */ + if (SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc)<0) { + return -1; + } + + cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1; + if ( cdrom->numtracks > SDL_MAX_TRACKS ) { + cdrom->numtracks = SDL_MAX_TRACKS; + } + + /* Read all the track TOC entries */ + okay=1; + for ( i=0; i<=cdrom->numtracks; ++i ) { + if ( i == cdrom->numtracks ) { + cdrom->track[i].id = CDROM_LEADOUT; + } else { + cdrom->track[i].id = toc.cdth_trk0+i; + } + entry.cdte_track = cdrom->track[i].id; + entry.cdte_format = CDROM_MSF; + if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY, &entry) < 0 ) { + okay=0; + break; + } else { + if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) { + cdrom->track[i].type = SDL_DATA_TRACK; + } else { + cdrom->track[i].type = SDL_AUDIO_TRACK; + } + cdrom->track[i].offset = MSF_TO_FRAMES( + entry.cdte_addr.msf.minute, + entry.cdte_addr.msf.second, + entry.cdte_addr.msf.frame); + cdrom->track[i].length = 0; + if ( i > 0 ) { + cdrom->track[i-1].length = cdrom->track[i].offset-cdrom->track[i-1].offset; + } + } + } + + return(okay ? 0 : -1); +} + +/* Get CD-ROM status */ +static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) +{ + CDstatus status; + struct cdrom_tochdr toc; + struct cdrom_subchnl info; + + info.cdsc_format = CDROM_MSF; + if ( SDL_SYS_CDioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) { + if ( ERRNO_TRAYEMPTY(errno) ) { + status = CD_TRAYEMPTY; + } else { + status = CD_ERROR; + } + } else { + switch (info.cdsc_audiostatus) { + case CDROM_AUDIO_INVALID: + case CDROM_AUDIO_NO_STATUS: + /* Try to determine if there's a CD available */ + if (SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0) { + status = CD_STOPPED; + } else { + status = CD_TRAYEMPTY; + } + break; + case CDROM_AUDIO_COMPLETED: + status = CD_STOPPED; + break; + case CDROM_AUDIO_PLAY: + status = CD_PLAYING; + break; + case CDROM_AUDIO_PAUSED: + /* Workaround buggy CD-ROM drive */ + if ( info.cdsc_trk == CDROM_LEADOUT ) { + status = CD_STOPPED; + } else { + status = CD_PAUSED; + } + break; + default: + status = CD_ERROR; + break; + } + } + if ( position ) { + if ( status == CD_PLAYING || (status == CD_PAUSED) ) { + *position = MSF_TO_FRAMES( + info.cdsc_absaddr.msf.minute, + info.cdsc_absaddr.msf.second, + info.cdsc_absaddr.msf.frame); + } else { + *position = 0; + } + } + return(status); +} + +/* Start play */ +static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) +{ + struct cdrom_msf playtime; + + FRAMES_TO_MSF(start, + &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0); + FRAMES_TO_MSF(start+length, + &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1); +#ifdef DEBUG_CDROM + fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", + playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0, + playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1); +#endif + + return SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime); +} + +/* Pause play */ +static int SDL_SYS_CDPause(SDL_CD *cdrom) +{ + return SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0); +} + +/* Resume play */ +static int SDL_SYS_CDResume(SDL_CD *cdrom) +{ + return SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0); +} + +/* Stop play */ +static int SDL_SYS_CDStop(SDL_CD *cdrom) +{ + return SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0); +} + +/* Eject the CD-ROM */ +static int SDL_SYS_CDEject(SDL_CD *cdrom) +{ + return SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0); +} + +#endif /* SDL_CDROM_MINT */ |