Mercurial > sdl-ios-xcode
view src/cdrom/openbsd/SDL_syscdrom.c @ 693:6c119628180d
Date: Sat, 16 Aug 2003 16:22:56 +0300
From: "Mike Gorchak"
Subject: Package building for QNX6
I'm just completed the package description file for QNX6 - qpg, it is like a\
.spec files for Linux. Please place SDL.qpg.in file in the root of the proj\
ect, where .spec file is placed. And sdl12qpg.diff - just adding the SDL.qpg\
.in. The same for the SDL_image. I'm planning to add .qpg files creation for\
all SDL* projects.
As for shared library building for QNX6. It is very hard to improve the exis\
ting libtool code to support QNX shared libraries. Much easyiest is to remov\
e libtool.m4 code from the acinclude.m4 for those persons, who building shar\
ed libraries for QNX6. I'm described all what they need to do with .so under\
QNX6 in the README.QNX file. And 90% of people used the precompiled librari\
es, so I think it is not big problem :)
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sat, 23 Aug 2003 23:25:46 +0000 |
parents | f6ffac90895c |
children | b8d311d90021 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* Functions for system-level CD-ROM audio control */ #include <sys/types.h> #include <sys/ioctl.h> #include <stdlib.h> #include <sys/stat.h> #include <fcntl.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <unistd.h> #include <sys/ioctl.h> #include <sys/cdio.h> #include "SDL_error.h" #include "SDL_cdrom.h" #include "SDL_syscdrom.h" /* The maximum number of CD-ROM drives we'll detect */ #define MAX_DRIVES 16 /* A list of available CD-ROM drives */ static char *SDL_cdlist[MAX_DRIVES]; static dev_t SDL_cdmode[MAX_DRIVES]; /* The system-dependent CD control functions */ static const char *SDL_SYS_CDName(int drive); static int SDL_SYS_CDOpen(int drive); 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); static void SDL_SYS_CDClose(SDL_CD *cdrom); /* Some ioctl() errno values which occur when the tray is empty */ #define ERRNO_TRAYEMPTY(errno) \ ((errno == EIO) || (errno == ENOENT) || (errno == EINVAL) || \ (errno == ENODEV)) /* Check a drive to see if it is a CD-ROM */ static int CheckDrive(char *drive, struct stat *stbuf) { int is_cd, cdfd; struct ioc_read_subchannel info; /* If it doesn't exist, return -1 */ if ( stat(drive, stbuf) < 0 ) { return(-1); } /* If it does exist, verify that it's an available CD-ROM */ is_cd = 0; if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) { cdfd = open(drive, (O_RDONLY|O_EXCL|O_NONBLOCK), 0); if ( cdfd >= 0 ) { info.address_format = CD_MSF_FORMAT; info.data_format = CD_CURRENT_POSITION; info.data_len = 0; info.data = NULL; /* Under Linux, EIO occurs when a disk is not present. This isn't 100% reliable, so we use the USE_MNTENT code above instead. */ if ( (ioctl(cdfd, CDIOCREADSUBCHANNEL, &info) == 0) || ERRNO_TRAYEMPTY(errno) ) { is_cd = 1; } close(cdfd); } else if (ERRNO_TRAYEMPTY(errno)) is_cd = 1; } return(is_cd); } /* Add a CD-ROM drive to our list of valid drives */ static void AddDrive(char *drive, struct stat *stbuf) { int i; if ( SDL_numcds < MAX_DRIVES ) { /* Check to make sure it's not already in our list. This can happen when we see a drive via symbolic link. */ for ( i=0; i<SDL_numcds; ++i ) { if ( stbuf->st_rdev == SDL_cdmode[i] ) { #ifdef DEBUG_CDROM fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]); #endif return; } } /* Add this drive to our list */ i = SDL_numcds; SDL_cdlist[i] = (char *)malloc(strlen(drive)+1); if ( SDL_cdlist[i] == NULL ) { SDL_OutOfMemory(); return; } strcpy(SDL_cdlist[i], drive); SDL_cdmode[i] = stbuf->st_rdev; ++SDL_numcds; #ifdef DEBUG_CDROM fprintf(stderr, "Added CD-ROM drive: %s\n", drive); #endif } } int SDL_SYS_CDInit(void) { static char *checklist[] = { #ifdef __OpenBSD__ "?0 cd?c", "cdrom", NULL #else "?0 cd?c", "?0 acd?c", "cdrom", NULL #endif }; char *SDLcdrom; int i, j, exists; char drive[32]; struct stat stbuf; /* Fill in our driver capabilities */ SDL_CDcaps.Name = SDL_SYS_CDName; SDL_CDcaps.Open = SDL_SYS_CDOpen; 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; SDL_CDcaps.Close = SDL_SYS_CDClose; /* Look in the environment for our CD-ROM drive list */ SDLcdrom = getenv("SDL_CDROM"); /* ':' separated list of devices */ if ( SDLcdrom != NULL ) { char *cdpath, *delim; cdpath = malloc(strlen(SDLcdrom)+1); if ( cdpath != NULL ) { strcpy(cdpath, SDLcdrom); SDLcdrom = cdpath; do { delim = strchr(SDLcdrom, ':'); if ( delim ) { *delim++ = '\0'; } if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) { AddDrive(SDLcdrom, &stbuf); } if ( delim ) { SDLcdrom = delim; } else { SDLcdrom = NULL; } } while ( SDLcdrom ); free(cdpath); } /* If we found our drives, there's nothing left to do */ if ( SDL_numcds > 0 ) { return(0); } } /* Scan the system for CD-ROM drives */ for ( i=0; checklist[i]; ++i ) { if ( checklist[i][0] == '?' ) { char *insert; exists = 1; for ( j=checklist[i][1]; exists; ++j ) { sprintf(drive, "/dev/%s", &checklist[i][3]); insert = strchr(drive, '?'); if ( insert != NULL ) { *insert = j; } switch (CheckDrive(drive, &stbuf)) { /* Drive exists and is a CD-ROM */ case 1: AddDrive(drive, &stbuf); break; /* Drive exists, but isn't a CD-ROM */ case 0: break; /* Drive doesn't exist */ case -1: exists = 0; break; } } } else { sprintf(drive, "/dev/%s", checklist[i]); if ( CheckDrive(drive, &stbuf) > 0 ) { AddDrive(drive, &stbuf); } } } return(0); } /* General ioctl() CD-ROM command function */ static int SDL_SYS_CDioctl(int id, int command, void *arg) { int retval; retval = ioctl(id, command, arg); if ( retval < 0 ) { SDL_SetError("ioctl() error: %s", strerror(errno)); } return(retval); } static const char *SDL_SYS_CDName(int drive) { return(SDL_cdlist[drive]); } static int SDL_SYS_CDOpen(int drive) { return(open(SDL_cdlist[drive], (O_RDONLY|O_EXCL|O_NONBLOCK), 0)); } static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) { struct ioc_toc_header toc; int i, okay; struct ioc_read_toc_entry entry; struct cd_toc_entry data; okay = 0; if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCHEADER, &toc) == 0 ) { cdrom->numtracks = toc.ending_track-toc.starting_track+1; if ( cdrom->numtracks > SDL_MAX_TRACKS ) { cdrom->numtracks = SDL_MAX_TRACKS; } /* Read all the track TOC entries */ for ( i=0; i<=cdrom->numtracks; ++i ) { if ( i == cdrom->numtracks ) { cdrom->track[i].id = 0xAA; /* CDROM_LEADOUT */ } else { cdrom->track[i].id = toc.starting_track+i; } entry.starting_track = cdrom->track[i].id; entry.address_format = CD_MSF_FORMAT; entry.data_len = sizeof(data); entry.data = &data; if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCENTRYS, &entry) < 0 ) { break; } else { cdrom->track[i].type = data.control; cdrom->track[i].offset = MSF_TO_FRAMES( data.addr.msf.minute, data.addr.msf.second, data.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; } } } if ( i == (cdrom->numtracks+1) ) { okay = 1; } } return(okay ? 0 : -1); } /* Get CD-ROM status */ static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) { CDstatus status; struct ioc_toc_header toc; struct ioc_read_subchannel info; struct cd_sub_channel_info data; info.address_format = CD_MSF_FORMAT; info.data_format = CD_CURRENT_POSITION; info.track = 0; info.data_len = sizeof(data); info.data = &data; if ( ioctl(cdrom->id, CDIOCREADSUBCHANNEL, &info) < 0 ) { if ( ERRNO_TRAYEMPTY(errno) ) { status = CD_TRAYEMPTY; } else { status = CD_ERROR; } } else { switch (data.header.audio_status) { case CD_AS_AUDIO_INVALID: case CD_AS_NO_STATUS: /* Try to determine if there's a CD available */ if (ioctl(cdrom->id,CDIOREADTOCHEADER,&toc)==0) status = CD_STOPPED; else status = CD_TRAYEMPTY; break; case CD_AS_PLAY_COMPLETED: status = CD_STOPPED; break; case CD_AS_PLAY_IN_PROGRESS: status = CD_PLAYING; break; case CD_AS_PLAY_PAUSED: status = CD_PAUSED; break; default: status = CD_ERROR; break; } } if ( position ) { if ( status == CD_PLAYING || (status == CD_PAUSED) ) { *position = MSF_TO_FRAMES( data.what.position.absaddr.msf.minute, data.what.position.absaddr.msf.second, data.what.position.absaddr.msf.frame); } else { *position = 0; } } return(status); } /* Start play */ static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) { struct ioc_play_msf playtime; FRAMES_TO_MSF(start, &playtime.start_m, &playtime.start_s, &playtime.start_f); FRAMES_TO_MSF(start+length, &playtime.end_m, &playtime.end_s, &playtime.end_f); #ifdef DEBUG_CDROM fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", playtime.start_m, playtime.start_s, playtime.start_f, playtime.end_m, playtime.end_s, playtime.end_f); #endif ioctl(cdrom->id, CDIOCSTART, 0); return(SDL_SYS_CDioctl(cdrom->id, CDIOCPLAYMSF, &playtime)); } /* Pause play */ static int SDL_SYS_CDPause(SDL_CD *cdrom) { return(SDL_SYS_CDioctl(cdrom->id, CDIOCPAUSE, 0)); } /* Resume play */ static int SDL_SYS_CDResume(SDL_CD *cdrom) { return(SDL_SYS_CDioctl(cdrom->id, CDIOCRESUME, 0)); } /* Stop play */ static int SDL_SYS_CDStop(SDL_CD *cdrom) { return(SDL_SYS_CDioctl(cdrom->id, CDIOCSTOP, 0)); } /* Eject the CD-ROM */ static int SDL_SYS_CDEject(SDL_CD *cdrom) { return(SDL_SYS_CDioctl(cdrom->id, CDIOCEJECT, 0)); } /* Close the CD-ROM handle */ static void SDL_SYS_CDClose(SDL_CD *cdrom) { close(cdrom->id); } void SDL_SYS_CDQuit(void) { int i; if ( SDL_numcds > 0 ) { for ( i=0; i<SDL_numcds; ++i ) { free(SDL_cdlist[i]); } SDL_numcds = 0; } }