Mercurial > sdl-ios-xcode
view src/cdrom/aix/SDL_syscdrom.c @ 26:c447d5b9275d
Date: Wed, 9 May 2001 18:03:20 -0600
From: Peter Valchev <pvalchev@openbsd.org>
Subject: openbsd patches
- The dlsym() one is supposed to fix dynamic loading on our a.out
architectures, where prefixing of an underscore symbol is required.
Actually I don't know what kind of dynamic loading does SDL deal with,
but anyway. You may want to make that change global, but only gcc's
preprocessor passes __ELF__, I think, so you can just add Linux or
something if you decide so.
author | Sam Lantinga <slouken@lokigames.com> |
---|---|
date | Thu, 10 May 2001 20:31:51 +0000 |
parents | 74212992fb08 |
children | c9b51268668f |
line wrap: on
line source
/* AIX audio module for SDL (Simple DirectMedia Layer) Copyright (C) 2000 Carsten Griwodz 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 Carsten Griwodz griff@kom.tu-darmstadt.de based on linux/SDL_syscdrom.c by Sam Lantinga */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* Functions for system-level CD-ROM audio control */ #define DEBUG_CDROM 1 #include <sys/types.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/devinfo.h> #include <sys/mntctl.h> #include <sys/statfs.h> #include <sys/vmount.h> #include <fstab.h> #include <sys/scdisk.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); static int SDL_SYS_CDioctl(int id, int command, void *arg); /* Check a drive to see if it is a CD-ROM */ static int CheckDrive(char *drive, struct stat *stbuf) { int is_cd; int cdfd; int ret; struct devinfo 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 ) { ret = SDL_SYS_CDioctl( cdfd, IOCINFO, &info ); if ( ret < 0 ) { /* Some kind of error */ is_cd = 0; } else { if ( info.devtype == DD_CDROM ) { is_cd = 1; } else { is_cd = 0; } } close(cdfd); } #ifdef DEBUG_CDROM else { fprintf(stderr, "Could not open drive %s (%s)\n", drive, strerror(errno)); } #endif } 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 } } static void CheckMounts() { char* buffer; int bufsz; struct vmount* ptr; int ret; buffer = (char*)malloc(10); bufsz = 10; if ( buffer==NULL ) { fprintf(stderr, "Could not allocate 10 bytes in aix/SDL_syscdrom.c:CheckMounts\n" ); exit ( -10 ); } do { /* mntctrl() returns an array of all mounted filesystems */ ret = mntctl ( MCTL_QUERY, bufsz, buffer ); if ( ret == 0 ) { /* Buffer was too small, realloc. */ bufsz = *(int*)buffer; /* Required size is in first word. */ /* (whatever a word is in AIX 4.3.3) */ /* int seems to be OK in 32bit mode. */ free(buffer); buffer = (char*)malloc(bufsz); if ( buffer==NULL ) { fprintf(stderr, "Could not allocate %d bytes in aix/SDL_syscdrom.c:CheckMounts\n", bufsz ); exit ( -10 ); } } else if ( ret < 0 ) { #ifdef DEBUG_CDROM fprintf(stderr, "Error reading vmount structures\n"); #endif return; } } while ( ret == 0 ); #ifdef DEBUG_CDROM fprintf ( stderr, "Read %d vmount structures\n",ret ); #endif ptr = (struct vmount*)buffer; do { switch(ptr->vmt_gfstype) { case MNT_CDROM : { struct stat stbuf; char* text; text = (char*)ptr + ptr->vmt_data[VMT_OBJECT].vmt_off; #ifdef DEBUG_CDROM fprintf(stderr, "Checking mount path: %s mounted on %s\n", text, (char*)ptr + ptr->vmt_data[VMT_STUB].vmt_off ); #endif if ( CheckDrive( text, &stbuf) > 0) { AddDrive( text, &stbuf); } } break; default : break; } ptr = (struct vmount*)((char*)ptr + ptr->vmt_length); ret--; } while ( ret > 0 ); free ( buffer ); } static int CheckNonmounts() { #ifdef _THREAD_SAFE AFILE_t fsFile = NULL; int passNo = 0; int ret; struct fstab entry; struct stat stbuf; ret = setfsent_r( &fsFile, &passNo ); if ( ret != 0 ) return -1; do { ret = getfsent_r ( &entry, &fsFile, &passNo ); if ( ret == 0 ) { char* l = strrchr(entry.fs_spec,'/'); if ( l != NULL ) { if ( !strncmp("cd",++l,2) ) { #ifdef DEBUG_CDROM fprintf(stderr, "Found unmounted CD ROM drive with device name %s\n", entry.fs_spec); #endif if ( CheckDrive( entry.fs_spec, &stbuf) > 0) { AddDrive( entry.fs_spec, &stbuf); } } } } } while ( ret == 0 ); ret = endfsent_r ( &fsFile ); if ( ret != 0 ) return -1; return 0; #else struct fstab* entry; struct stat stbuf; setfsent(); do { entry = getfsent(); if ( entry != NULL ) { char* l = strrchr(entry->fs_spec,'/'); if ( l != NULL ) { if ( !strncmp("cd",++l,2) ) { #ifdef DEBUG_CDROM fprintf(stderr,"Found unmounted CD ROM drive with device name %s", entry->fs_spec); #endif if ( CheckDrive( entry->fs_spec, &stbuf) > 0) { AddDrive( entry->fs_spec, &stbuf); } } } } } while ( entry != NULL ); endfsent(); #endif } int SDL_SYS_CDInit(void) { char *SDLcdrom; 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'; } #ifdef DEBUG_CDROM fprintf(stderr, "Checking CD-ROM drive from SDL_CDROM: %s\n", SDLcdrom); #endif 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); } } CheckMounts(); CheckNonmounts(); 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) { int fd; char* lastsl; char* cdromname; /* * We found /dev/cd? drives and that is in our list. But we can * open only the /dev/rcd? versions of those devices for Audio CD. */ cdromname = (char*)malloc( strlen(SDL_cdlist[drive]+2) ); strcpy(cdromname,SDL_cdlist[drive]); lastsl = strrchr(cdromname,'/'); if (lastsl) { *lastsl = 0; strcat(cdromname,"/r"); lastsl = strrchr(SDL_cdlist[drive],'/'); if (lastsl) { lastsl++; strcat(cdromname,lastsl); } } #ifdef DEBUG_CDROM fprintf(stderr, "Should open drive %s, opening %s\n", SDL_cdlist[drive], cdromname); #endif /* * Use exclusive access. Don't use SC_DIAGNOSTICS as xmcd does because they * require root priviledges, and we don't want that. SC_SINGLE provides * exclusive access with less trouble. */ fd = openx(cdromname, O_RDONLY, NULL, SC_SINGLE); if ( fd < 0 ) { #ifdef DEBUG_CDROM fprintf(stderr, "Could not open drive %s (%s)\n", cdromname, strerror(errno)); #endif } else { struct mode_form_op cdMode; int ret; #ifdef DEBUG_CDROM cdMode.action = CD_GET_MODE; ret = SDL_SYS_CDioctl(fd, DK_CD_MODE, &cdMode); if ( ret < 0 ) { fprintf(stderr, "Could not get drive mode for %s (%s)\n", cdromname, strerror(errno)); } else { switch(cdMode.cd_mode_form) { case CD_MODE1 : fprintf(stderr, "Drive mode for %s is %s\n", cdromname, "CD-ROM Data Mode 1"); break; case CD_MODE2_FORM1 : fprintf(stderr, "Drive mode for %s is %s\n", cdromname, "CD-ROM XA Data Mode 2 Form 1"); break; case CD_MODE2_FORM2 : fprintf(stderr, "Drive mode for %s is %s\n", cdromname, "CD-ROM XA Data Mode 2 Form 2"); break; case CD_DA : fprintf(stderr, "Drive mode for %s is %s\n", cdromname, "CD-DA"); break; default : fprintf(stderr, "Drive mode for %s is %s\n", cdromname, "unknown"); break; } } #endif cdMode.action = CD_CHG_MODE; cdMode.cd_mode_form = CD_DA; ret = SDL_SYS_CDioctl(fd, DK_CD_MODE, &cdMode); if ( ret < 0 ) { #ifdef DEBUG_CDROM fprintf(stderr, "Could not set drive mode for %s (%s)\n", cdromname, strerror(errno)); #endif SDL_SetError("ioctl() error: Could not set CD drive mode, %s", strerror(errno)); } else { #ifdef DEBUG_CDROM fprintf(stderr, "Drive mode for %s set to CD_DA\n", cdromname); #endif } } free(cdromname); return fd; } static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) { struct cd_audio_cmd cmd; struct cd_audio_cmd entry; int i; int okay; cmd.audio_cmds = CD_TRK_INFO_AUDIO; cmd.msf_flag = FALSE; if ( SDL_SYS_CDioctl(cdrom->id, DKAUDIO, &cmd) < 0 ) { return -1; } okay = 0; cdrom->numtracks = cmd.indexing.track_index.last_track - cmd.indexing.track_index.first_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;; } else { cdrom->track[i].id = cmd.indexing.track_index.first_track+i; } entry.audio_cmds = CD_GET_TRK_MSF; entry.indexing.track_msf.track = cdrom->track[i].id; if ( SDL_SYS_CDioctl(cdrom->id, DKAUDIO, &entry) < 0 ) { break; } else { cdrom->track[i].type = 0; /* don't know how to detect 0x04 data track */ cdrom->track[i].offset = MSF_TO_FRAMES( entry.indexing.track_msf.mins, entry.indexing.track_msf.secs, entry.indexing.track_msf.frames); 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 cd_audio_cmd cmd; cmd.audio_cmds = CD_INFO_AUDIO; if ( SDL_SYS_CDioctl(cdrom->id, DKAUDIO, &cmd) < 0 ) { #ifdef DEBUG_CDROM fprintf(stderr, "ioctl failed in SDL_SYS_CDStatus (%s)\n", SDL_GetError()); #endif status = CD_ERROR; } else { switch (cmd.status) { case CD_NO_AUDIO: case CD_COMPLETED: status = CD_STOPPED; break; case CD_PLAY_AUDIO: status = CD_PLAYING; break; case CD_PAUSE_AUDIO: status = CD_PAUSED; break; case CD_NOT_VALID: #ifdef DEBUG_CDROM fprintf(stderr, "cdStatus failed with CD_NOT_VALID\n"); #endif status = CD_ERROR; break; case CD_STATUS_ERROR: #ifdef DEBUG_CDROM fprintf(stderr, "cdStatus failed with CD_STATUS_ERROR\n"); #endif status = CD_ERROR; break; default: #ifdef DEBUG_CDROM fprintf(stderr, "cdStatus failed with unknown error\n"); #endif status = CD_ERROR; break; } } if ( position ) { if ( status == CD_PLAYING || (status == CD_PAUSED) ) { *position = MSF_TO_FRAMES( cmd.indexing.info_audio.current_mins, cmd.indexing.info_audio.current_secs, cmd.indexing.info_audio.current_frames); } else { *position = 0; } } return status; } /* Start play */ static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) { struct cd_audio_cmd cmd; /* * My CD Rom is muted by default. I think I read that this is new with * AIX 4.3. SDL does not change the volume, so I need a kludge. Maybe * its better to do this elsewhere? */ cmd.audio_cmds = CD_PLAY_AUDIO | CD_SET_VOLUME; cmd.msf_flag = TRUE; FRAMES_TO_MSF(start, &cmd.indexing.msf.first_mins, &cmd.indexing.msf.first_secs, &cmd.indexing.msf.first_frames); FRAMES_TO_MSF(start+length, &cmd.indexing.msf.last_mins, &cmd.indexing.msf.last_secs, &cmd.indexing.msf.last_frames); cmd.volume_type = CD_VOLUME_ALL; cmd.all_channel_vol = 255; /* This is a uchar. What is a good value? No docu! */ cmd.out_port_0_sel = CD_AUDIO_CHNL_0; cmd.out_port_1_sel = CD_AUDIO_CHNL_1; cmd.out_port_2_sel = CD_AUDIO_CHNL_2; cmd.out_port_3_sel = CD_AUDIO_CHNL_3; #ifdef DEBUG_CDROM fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", cmd.indexing.msf.first_mins, cmd.indexing.msf.first_secs, cmd.indexing.msf.first_frames, cmd.indexing.msf.last_mins, cmd.indexing.msf.last_secs, cmd.indexing.msf.last_frames); #endif return(SDL_SYS_CDioctl(cdrom->id, DKAUDIO, &cmd)); } /* Pause play */ static int SDL_SYS_CDPause(SDL_CD *cdrom) { struct cd_audio_cmd cmd; cmd.audio_cmds = CD_PAUSE_AUDIO; return(SDL_SYS_CDioctl(cdrom->id, DKAUDIO, &cmd)); } /* Resume play */ static int SDL_SYS_CDResume(SDL_CD *cdrom) { struct cd_audio_cmd cmd; cmd.audio_cmds = CD_RESUME_AUDIO; return(SDL_SYS_CDioctl(cdrom->id, DKAUDIO, &cmd)); } /* Stop play */ static int SDL_SYS_CDStop(SDL_CD *cdrom) { struct cd_audio_cmd cmd; cmd.audio_cmds = CD_STOP_AUDIO; return(SDL_SYS_CDioctl(cdrom->id, DKAUDIO, &cmd)); } /* Eject the CD-ROM */ static int SDL_SYS_CDEject(SDL_CD *cdrom) { return(SDL_SYS_CDioctl(cdrom->id, DKEJECT, 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; } }