Mercurial > sdl-ios-xcode
diff src/cdrom/qnx/SDL_syscdrom.c @ 571:8e3ce997621c
Date: Thu, 16 Jan 2003 13:48:31 +0200
From: "Mike Gorchak"
Subject: All QNX patches
whole patches concerning QNX. Almost all code has been rewritten by Julian
and me. Added initial support for hw overlays in QNX and many many others
fixes.
P.S. This patches has been reviewed by Dave Rempel from QSSL and included in
SDL 1.2.5 distribution, which coming on 3rd party CD for newest 6.2.1
version of QNX, which will be available soon.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 20 Jan 2003 01:38:37 +0000 |
parents | f6ffac90895c |
children | b8d311d90021 |
line wrap: on
line diff
--- a/src/cdrom/qnx/SDL_syscdrom.c Mon Jan 20 01:37:07 2003 +0000 +++ b/src/cdrom/qnx/SDL_syscdrom.c Mon Jan 20 01:38:37 2003 +0000 @@ -33,24 +33,26 @@ #include <sys/ioctl.h> #include <fcntl.h> #include <stdio.h> +#include <errno.h> #include <string.h> -#include <errno.h> #include <unistd.h> #include <sys/cdrom.h> #include <sys/dcmd_cam.h> - #include "SDL_error.h" #include "SDL_cdrom.h" +#include "SDL_timer.h" #include "SDL_syscdrom.h" +/* The maximum number of CD-ROM drives we'll detect */ +#define MAX_DRIVES 16 -/* The maximum number of CD-ROM drives we'll detect */ -#define MAX_DRIVES 16 +#define QNX_CD_OPENMODE O_RDONLY | O_EXCL /* A list of available CD-ROM drives */ static char *SDL_cdlist[MAX_DRIVES]; static dev_t SDL_cdmode[MAX_DRIVES]; +static int SDL_cdopen[MAX_DRIVES]; /* The system-dependent CD control functions */ static const char *SDL_SYS_CDName(int drive); @@ -64,341 +66,491 @@ 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)) - /* Check a drive to see if it is a CD-ROM */ -static int CheckDrive(char *drive, char *mnttype, struct stat *stbuf) +static int CheckDrive(char *drive, struct stat *stbuf) { - int is_cd, cdfd; - cdrom_subch_data_t info; + int is_cd, cdfd; + cam_devinfo_t dinfo; + int devctlret=0; + + int atapi; + int removable; + int cdb10; - /* If it doesn't exist, return -1 */ - if ( stat(drive, stbuf) < 0 ) { - return(-1); - } + /* 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 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.subch_command.data_format = CDROM_MSF; - /* Under Linux, EIO occurs when a disk is not present. - */ - if ((devctl(cdfd,DCMD_CAM_CDROMSUBCHNL,&info,sizeof(info),0) == 0) || - ERRNO_TRAYEMPTY(errno) ) - { - is_cd = 1; - } - close(cdfd); - } - } - return(is_cd); + if (S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode)) + { + cdfd = open(drive, QNX_CD_OPENMODE); + if ( cdfd >= 0 ) + { + devctlret=devctl(cdfd, DCMD_CAM_DEVINFO, &dinfo, sizeof(cam_devinfo_t), NULL); + + if (devctlret==EOK) + { + atapi=dinfo.flags & DEV_ATAPI; + removable=dinfo.flags & DEV_REMOVABLE; + cdb10=dinfo.flags & DEV_CDB_10; /* I'm not sure about that flag */ + + /* in the near future need to add more checks for splitting cdroms from other devices */ + if ((atapi)&&(removable)) + { + is_cd = 1; + } + } + + close(cdfd); + } + } + return(is_cd); } /* Add a CD-ROM drive to our list of valid drives */ static void AddDrive(char *drive, struct stat *stbuf) { - int i; + 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; - } - } + 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. */ - /* 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 - } + for (i=0; i<SDL_numcds; ++i) + { + if (stbuf->st_rdev == SDL_cdmode[i]) + { + 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; + } } -int SDL_SYS_CDInit(void) +int SDL_SYS_CDInit(void) { - /* checklist: /dev/cdrom, /dev/hd?, /dev/scd? /dev/sr? */ - static char *checklist[] = { - "cdrom", "?0 cd?", "?1 cd?", "?a hd?", "?0 scd?", "?0 sr?", NULL - }; - char *SDLcdrom; - int i, j, exists; - char drive[32]; - struct stat stbuf; + /* checklist: /dev/cdrom, /dev/cd?, /dev/scd? */ + static char *checklist[]={"cdrom", "?0 cd?", "?1 cd?", "?0 scd?", NULL}; + + 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; + /* 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; + + /* clearing device open status */ + for (i=0; i<MAX_DRIVES; i++) + { + SDL_cdopen[i]=0; + } + + /* Look in the environment for our CD-ROM drive list */ + SDLcdrom = getenv("SDL_CDROM"); /* ':' separated list of devices */ + if ( SDLcdrom != NULL ) + { + char *cdpath, *delim; - /* 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, NULL, &stbuf) > 0 ) { - AddDrive(SDLcdrom, &stbuf); - } - if ( delim ) { - SDLcdrom = delim; - } else { - SDLcdrom = NULL; - } - } while ( SDLcdrom ); - free(cdpath); - } + 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); - } - } + /* 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; - } -#ifdef DEBUG_CDROM - fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive); -#endif - switch (CheckDrive(drive, NULL, &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]); -#ifdef DEBUG_CDROM - fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive); -#endif - if ( CheckDrive(drive, NULL, &stbuf) > 0 ) { - AddDrive(drive, &stbuf); - } - } - } - 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); } static const char *SDL_SYS_CDName(int drive) { - return(SDL_cdlist[drive]); + return(SDL_cdlist[drive]); } static int SDL_SYS_CDOpen(int drive) { - return(open(SDL_cdlist[drive], (O_RDONLY|O_EXCL|O_NONBLOCK), 0)); + int handle; + + handle=open(SDL_cdlist[drive], QNX_CD_OPENMODE); + + if (handle>0) + { + SDL_cdopen[drive]=handle; + } + + return (handle); } static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) { - cdrom_read_toc_t toc; - int i, okay; + cdrom_read_toc_t toc; + int i, okay; - okay = 0; - if (devctl(cdrom->id, DCMD_CAM_CDROMREADTOC, &toc, sizeof(toc), 0) == 0) { - cdrom->numtracks = toc.last_track - toc.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 = CDROM_LEADOUT; - } else { -#if 0 /* Sam 11/6/00 - an obsolete field? */ - cdrom->track[i].id = toc.cdth_trk0+i; -#else - cdrom->track[i].id = toc.first_track+i; -#endif - } - cdrom->track[i].type = toc.toc_entry[i].control_adr; - cdrom->track[i].offset = MSF_TO_FRAMES( - toc.toc_entry[i].addr.msf.minute, - toc.toc_entry[i].addr.msf.second, - toc.toc_entry[i].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); + okay = 0; + if (devctl(cdrom->id, DCMD_CAM_CDROMREADTOC, &toc, sizeof(toc), NULL) == 0) + { + cdrom->numtracks = toc.last_track - toc.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 = CDROM_LEADOUT; + } + else + { + cdrom->track[i].id = toc.first_track+i; + } + + cdrom->track[i].type = toc.toc_entry[i].control_adr & 0x0F; + cdrom->track[i].offset = toc.toc_entry[i].addr.lba; + 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; - cdrom_read_toc_t toc; - subch_current_position_t info; + CDstatus status; + + cdrom_read_toc_t toc; + cdrom_subch_data_t info; + cam_devinfo_t dinfo; + + int devctlret=0; + int drive=-1; + int i; + int eagaincnt=0; + + /* check media presence before read subchannel call, some cdroms can lockups */ + /* if no media, while calling read subchannel functions. */ + devctlret=devctl(cdrom->id, DCMD_CAM_DEVINFO, &dinfo, sizeof(cam_devinfo_t), NULL); + + if (devctlret==EOK) + { + if ((dinfo.flags & DEV_NO_MEDIA)!=0) + { + status = CD_TRAYEMPTY; + if (position) + { + *position = 0; + } + return (status); + } + } + + /* if media exists, then do other stuff */ + + memset(&info, 0x00, sizeof(info)); + info.subch_command.data_format = CDROM_SUBCH_CURRENT_POSITION; + + do { + devctlret=devctl(cdrom->id, DCMD_CAM_CDROMSUBCHNL, &info, sizeof(info), NULL); + if (devctlret==EIO) + { + /* big workaround for media change, handle is unusable after that, + that bug was found in QNX 6.2, 6.2.1 is not released yet. */ -#if 0 /* Sam 11/6/00 - an obsolete field? */ - info.subch_command.data_format = CDROM_SUBCH_CURRENT_POSITION; - info.subch_command.track_number = 0; -#else - info.data_format = CDROM_SUBCH_CURRENT_POSITION; - info.track_number = 0; -#endif - if (devctl(cdrom->id, DCMD_CAM_CDROMSUBCHNL, &info, sizeof(info), 0) != 0) { - if ( ERRNO_TRAYEMPTY(errno) ) { - status = CD_TRAYEMPTY; - } else { - status = CD_ERROR; - } - } else { - switch (info.header.audio_status) { - case CDROM_AUDIO_INVALID: - case CDROM_AUDIO_NO_STATUS: - /* Try to determine if there's a CD available */ - if (devctl(cdrom->id, DCMD_CAM_CDROMREADTOC, &toc, sizeof(toc), 0)==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.data_format == 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.addr.msf.minute, - info.addr.msf.second, - info.addr.msf.frame); - } else { - *position = 0; - } - } - return(status); + for (i=0; i<MAX_DRIVES; i++) + { + if (SDL_cdopen[i]==cdrom->id) + { + drive=i; + break; + } + } + if (drive==-1) + { + /* that cannot happen, but ... */ + break; + } + close(cdrom->id); + cdrom->id=open(SDL_cdlist[drive], QNX_CD_OPENMODE); + devctlret=EAGAIN; + } + if (devctlret==EAGAIN) + { + eagaincnt++; + } + if (eagaincnt==2) + { + /* workaround for broken cdroms, which can return always EAGAIN when its not ready, */ + /* that mean errornous media or just no media avail */ + devctlret=ENXIO; + break; + } + } while ((devctlret==EAGAIN)||(devctlret==ESTALE)); + + if (devctlret != 0) + { + if (devctlret==ENXIO) + { + status = CD_TRAYEMPTY; + } + else + { + status = CD_ERROR; + } + } + else + { + switch (info.current_position.header.audio_status) + { + case CDROM_AUDIO_INVALID: + case CDROM_AUDIO_NO_STATUS: + /* Try to determine if there's a CD available */ + if (devctl(cdrom->id, DCMD_CAM_CDROMREADTOC, &toc, sizeof(toc), NULL)==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.current_position.data_format == 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.current_position.addr.msf.minute, + info.current_position.addr.msf.second, + info.current_position.addr.msf.frame); + } + else + { + *position = 0; + } + } + + return (status); } /* Start play */ static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) { - cdrom_playmsf_t playtime; + cdrom_playmsf_t playtime; + + FRAMES_TO_MSF(start, &playtime.start_minute, &playtime.start_second, &playtime.start_frame); + FRAMES_TO_MSF(start+length, &playtime.end_minute, &playtime.end_second, &playtime.end_frame); - FRAMES_TO_MSF(start, - &playtime.start_minute, &playtime.start_second, &playtime.start_frame); - FRAMES_TO_MSF(start+length, - &playtime.end_minute, &playtime.end_second, &playtime.end_frame); -#ifdef DEBUG_CDROM - fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", - playtime.start_minute, playtime.start_second, playtime.start_frame, - playtime.end_minute, playtime.end_second, playtime.end_frame); -#endif - return(devctl(cdrom->id, DCMD_CAM_CDROMPLAYMSF, &playtime, sizeof(playtime), 0)); + if (devctl(cdrom->id, DCMD_CAM_CDROMPLAYMSF, &playtime, sizeof(playtime), NULL) != 0) + { + return -1; + } + else + { + return 0; + } } /* Pause play */ static int SDL_SYS_CDPause(SDL_CD *cdrom) { - return(devctl(cdrom->id, DCMD_CAM_CDROMPAUSE, NULL, 0, 0)); + if (devctl(cdrom->id, DCMD_CAM_CDROMPAUSE, NULL, 0, NULL)!=0) + { + return -1; + } + else + { + return 0; + } } /* Resume play */ static int SDL_SYS_CDResume(SDL_CD *cdrom) { - return(devctl(cdrom->id, DCMD_CAM_CDROMRESUME, NULL, 0, 0)); + if (devctl(cdrom->id, DCMD_CAM_CDROMRESUME, NULL, 0, NULL)!=0) + { + return -1; + } + else + { + return 0; + } } /* Stop play */ static int SDL_SYS_CDStop(SDL_CD *cdrom) { - return(devctl(cdrom->id, DCMD_CAM_CDROMSTOP, NULL, 0, 0)); + if (devctl(cdrom->id, DCMD_CAM_CDROMSTOP, NULL, 0, NULL)!=0) + { + return -1; + } + else + { + return 0; + } } /* Eject the CD-ROM */ static int SDL_SYS_CDEject(SDL_CD *cdrom) { - return(devctl(cdrom->id, DCMD_CAM_EJECT_MEDIA, NULL, 0, 0)); + if (devctl(cdrom->id, DCMD_CAM_EJECT_MEDIA, NULL, 0, NULL)!=0) + { + return -1; + } + else + { + return 0; + } } /* Close the CD-ROM handle */ static void SDL_SYS_CDClose(SDL_CD *cdrom) { - close(cdrom->id); + int i; + + for (i=0; i<MAX_DRIVES; i++) + { + if (SDL_cdopen[i]==cdrom->id) + { + SDL_cdopen[i]=0; + break; + } + } + + close(cdrom->id); } void SDL_SYS_CDQuit(void) { - int i; + int i; - if ( SDL_numcds > 0 ) { - for ( i=0; i<SDL_numcds; ++i ) { - free(SDL_cdlist[i]); - } - SDL_numcds = 0; - } + if (SDL_numcds > 0) + { + for (i=0; i<SDL_numcds; ++i) + { + free(SDL_cdlist[i]); + } + SDL_numcds = 0; + } } -