diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/cdrom/bsdi/SDL_syscdrom.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/cdrom/bsdi/SDL_syscdrom.c | 542 |
1 files changed, 0 insertions, 542 deletions
diff --git a/distrib/sdl-1.2.12/src/cdrom/bsdi/SDL_syscdrom.c b/distrib/sdl-1.2.12/src/cdrom/bsdi/SDL_syscdrom.c deleted file mode 100644 index 7687f21..0000000 --- a/distrib/sdl-1.2.12/src/cdrom/bsdi/SDL_syscdrom.c +++ /dev/null @@ -1,542 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Sam Lantinga - slouken@libsdl.org -*/ -#include "SDL_config.h" - -#ifdef SDL_CDROM_BSDI - -/* - * Functions for system-level CD-ROM audio control for BSD/OS 4.x - * This started life out as a copy of the freebsd/SDL_cdrom.c file but was - * heavily modified. Works for standard (MMC) SCSI and ATAPI CDrom drives. - * - * Steven Schultz - sms@to.gd-es.com -*/ - -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <err.h> -#include <unistd.h> -#include <sys/ioctl.h> -#include </sys/dev/scsi/scsi.h> -#include </sys/dev/scsi/scsi_ioctl.h> - -#include "SDL_cdrom.h" -#include "../SDL_syscdrom.h" - -/* - * The msf_to_frame and frame_to_msf were yanked from libcdrom and inlined - * here so that -lcdrom doesn't have to be dragged in for something so simple. -*/ - -#define FRAMES_PER_SECOND 75 -#define FRAMES_PER_MINUTE (FRAMES_PER_SECOND * 60) - -int -msf_to_frame(int minute, int second, int frame) - { - return(minute * FRAMES_PER_MINUTE + second * FRAMES_PER_SECOND + frame); - } - -void -frame_to_msf(int frame, int *minp, int *secp, int *framep) - { - *minp = frame / FRAMES_PER_MINUTE; - *secp = (frame % FRAMES_PER_MINUTE) / FRAMES_PER_SECOND; - *framep = frame % FRAMES_PER_SECOND; - } - -/* 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); - -typedef struct scsi_cdb cdb_t; - -static int scsi_cmd(int fd, - struct scsi_cdb *cdb, - int cdblen, - int rw, - caddr_t data, - int datalen, - struct scsi_user_cdb *sus) - { - int scsistatus; - unsigned char *cp; - struct scsi_user_cdb suc; - - /* safety checks */ - if (!cdb) return(-1); - if (rw != SUC_READ && rw != SUC_WRITE) return(-1); - - suc.suc_flags = rw; - suc.suc_cdblen = cdblen; - bcopy(cdb, suc.suc_cdb, cdblen); - suc.suc_datalen = datalen; - suc.suc_data = data; - suc.suc_timeout = 10; /* 10 secs max for TUR or SENSE */ - if (ioctl(fd, SCSIRAWCDB, &suc) == -1) - return(-11); - scsistatus = suc.suc_sus.sus_status; - cp = suc.suc_sus.sus_sense; - -/* - * If a place to copy the sense data back to has been provided then the - * caller is responsible for checking the errors and printing any information - * out if the status was not successful. -*/ - if (scsistatus != 0 && !sus) - { - fprintf(stderr,"scsistatus = %x cmd = %x\n", - scsistatus, cdb[0]); - fprintf(stderr, "sense %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x\n", - cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], - cp[6], cp[7], cp[8], cp[9], cp[10], cp[11], - cp[12], cp[13], cp[14], cp[15]); - return(1); - } - if (sus) - bcopy(&suc, sus, sizeof (struct scsi_user_cdb)); - if (scsistatus) - return(1); /* Return non-zero for unsuccessful status */ - return(0); - } - -/* request vendor brand and model */ -unsigned char *Inquiry(int fd) - { - static struct scsi_cdb6 cdb = - { - 0x12, - 0, 0, 0, - 56, - 0 - }; - static unsigned char Inqbuffer[56]; - - if (scsi_cmd(fd, (cdb_t *)&cdb, 6, SUC_READ, Inqbuffer, - sizeof(Inqbuffer), 0)) - return("\377"); - return(Inqbuffer); - } - -#define ADD_SENSECODE 12 -#define ADD_SC_QUALIFIER 13 - -int TestForMedium(int fd) - { - int sts, asc, ascq; - struct scsi_user_cdb sus; - static struct scsi_cdb6 cdb = - { - CMD_TEST_UNIT_READY, /* command */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0 /* reserved */ - }; - -again: sts = scsi_cmd(fd, (cdb_t *)&cdb, 6, SUC_READ, 0, 0, &sus); - asc = sus.suc_sus.sus_sense[ADD_SENSECODE]; - ascq = sus.suc_sus.sus_sense[ADD_SC_QUALIFIER]; - if (asc == 0x3a && ascq == 0x0) /* no medium */ - return(0); - if (asc == 0x28 && ascq == 0x0) /* medium changed */ - goto again; - if (asc == 0x4 && ascq == 0x1 ) /* coming ready */ - { - sleep(2); - goto again; - } - return(1); - } - -/* Check a drive to see if it is a CD-ROM */ -static int CheckDrive(char *drive, struct stat *stbuf) -{ - int is_cd = 0, cdfd; - char *p; - - /* 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 */ - cdfd = open(drive, (O_RDONLY|O_EXCL|O_NONBLOCK), 0); - if ( cdfd >= 0 ) { - p = Inquiry(cdfd); - if (*p == TYPE_ROM) - 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; - - 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] = SDL_strdup(drive); - if ( SDL_cdlist[i] == NULL ) { - SDL_OutOfMemory(); - return; - } - 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) -{ - /* checklist: /dev/rsr?c */ - static char *checklist[] = { - "?0 rsr?", 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; - - /* Look in the environment for our CD-ROM drive list */ - SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */ - if ( SDLcdrom != NULL ) { - char *cdpath, *delim; - size_t len = SDL_strlen(SDLcdrom)+1; - cdpath = SDL_stack_alloc(char, len); - if ( cdpath != NULL ) { - SDL_strlcpy(cdpath, SDLcdrom, len); - SDLcdrom = cdpath; - do { - delim = SDL_strchr(SDLcdrom, ':'); - if ( delim ) { - *delim++ = '\0'; - } - if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) { - AddDrive(SDLcdrom, &stbuf); - } - if ( delim ) { - SDLcdrom = delim; - } else { - SDLcdrom = NULL; - } - } while ( SDLcdrom ); - SDL_stack_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 ) { - SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%sc", &checklist[i][3]); - insert = SDL_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 { - SDL_snprintf(drive, SDL_arraysize(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]); -} - -static int SDL_SYS_CDOpen(int drive) -{ - return(open(SDL_cdlist[drive], O_RDONLY | O_NONBLOCK | O_EXCL, 0)); -} - -static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) - { - u_char cdb[10], buf[4], *p, *toc; - struct scsi_user_cdb sus; - int i, sts, first_track, last_track, ntracks, toc_size; - - bzero(cdb, sizeof (cdb)); - cdb[0] = 0x43; /* Read TOC */ - cdb[1] = 0x2; /* MSF */ - cdb[8] = 4; /* size TOC header */ - sts = scsi_cmd(cdrom->id, (cdb_t *)cdb, 10, SUC_READ, buf, 4, &sus); - if (sts < 0) - return(-1); - first_track = buf[2]; - last_track = buf[3]; - ntracks = last_track - first_track + 1; - cdrom->numtracks = ntracks; - toc_size = 4 + (ntracks + 1) * 8; - toc = (u_char *)SDL_malloc(toc_size); - if (toc == NULL) - return(-1); - bzero(cdb, sizeof (cdb)); - cdb[0] = 0x43; - cdb[1] = 0x2; - cdb[6] = first_track; - cdb[7] = toc_size >> 8; - cdb[8] = toc_size & 0xff; - sts = scsi_cmd(cdrom->id, (cdb_t *)cdb, 10, SUC_READ, toc, toc_size, - &sus); - if (sts < 0) - { - SDL_free(toc); - return(-1); - } - - for (i = 0, p = toc+4; i <= ntracks; i++, p+= 8) - { - if (i == ntracks) - cdrom->track[i].id = 0xAA; /* Leadout */ - else - cdrom->track[i].id = first_track + i; - if (p[1] & 0x20) - cdrom->track[i].type = SDL_DATA_TRACK; - else - cdrom->track[i].type = SDL_AUDIO_TRACK; - cdrom->track[i].offset = msf_to_frame(p[5], p[6], p[7]); - cdrom->track[i].length = 0; - if (i > 0) - cdrom->track[i-1].length = cdrom->track[i].offset - - cdrom->track[i-1].offset; - } - SDL_free(toc); - return(0); - } - -/* Get CD-ROM status */ -static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) - { - CDstatus status; - u_char cdb[10], buf[16]; - int sts; - struct scsi_user_cdb sus; - - bzero(cdb, sizeof (cdb)); - cdb[0] = 0x42; /* read subq */ - cdb[1] = 0x2; /* MSF */ - cdb[2] = 0x40; /* q channel */ - cdb[3] = 1; /* current pos */ - cdb[7] = sizeof (buf) >> 8; - cdb[8] = sizeof (buf) & 0xff; - sts = scsi_cmd(cdrom->id, (cdb_t *)cdb, 10, SUC_READ, buf, sizeof (buf), - &sus); - if (sts < 0) - return(-1); - if (sts) - { - if (TestForMedium(cdrom->id) == 0) - status = CD_TRAYEMPTY; - else - status = CD_ERROR; - } - else - { - switch (buf[1]) - { - case 0x11: - status = CD_PLAYING; - break; - case 0x12: - status = CD_PAUSED; - break; - case 0x13: - case 0x14: - case 0x15: - status = CD_STOPPED; - break; - default: - status = CD_ERROR; - break; - } - } - if (position) - { - if ( status == CD_PLAYING || (status == CD_PAUSED) ) - *position = msf_to_frame(buf[9], buf[10], buf[11]); - else - *position = 0; - } - return(status); - } - -/* Start play */ -static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) - { - u_char cdb[10]; - int sts, minute, second, frame, eminute, esecond, eframe; - struct scsi_user_cdb sus; - - bzero(cdb, sizeof(cdb)); - cdb[0] = 0x47; /* Play */ - frame_to_msf(start, &minute, &second, &frame); - frame_to_msf(start + length, &eminute, &esecond, &eframe); - cdb[3] = minute; - cdb[4] = second; - cdb[5] = frame; - cdb[6] = eminute; - cdb[7] = esecond; - cdb[8] = eframe; - sts = scsi_cmd(cdrom->id, (cdb_t *)cdb, 10, SUC_READ, 0, 0, &sus); - return(sts); - } - -static int -pauseresume(SDL_CD *cdrom, int flag) - { - u_char cdb[10]; - struct scsi_user_cdb sus; - - bzero(cdb, sizeof (cdb)); - cdb[0] = 0x4b; - cdb[8] = flag & 0x1; - return(scsi_cmd(cdrom->id, (cdb_t *)cdb, 10, SUC_READ, 0, 0, &sus)); - } - -/* Pause play */ -static int SDL_SYS_CDPause(SDL_CD *cdrom) -{ - return(pauseresume(cdrom, 0)); -} - -/* Resume play */ -static int SDL_SYS_CDResume(SDL_CD *cdrom) -{ - return(pauseresume(cdrom, 1)); -} - -/* Stop play */ -static int SDL_SYS_CDStop(SDL_CD *cdrom) -{ - u_char cdb[6]; - struct scsi_user_cdb sus; - - bzero(cdb, sizeof (cdb)); - cdb[0] = 0x1b; /* stop */ - cdb[1] = 1; /* immediate */ - return(scsi_cmd(cdrom->id, (cdb_t *)cdb, 6, SUC_READ, 0, 0, &sus)); -} - -/* Eject the CD-ROM */ -static int SDL_SYS_CDEject(SDL_CD *cdrom) -{ - u_char cdb[6]; - struct scsi_user_cdb sus; - - bzero(cdb, sizeof (cdb)); - cdb[0] = 0x1b; /* stop */ - cdb[1] = 1; /* immediate */ - cdb[4] = 2; /* eject */ - return(scsi_cmd(cdrom->id, (cdb_t *)cdb, 6, SUC_READ, 0, 0, &sus)); -} - -/* 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 ) { - SDL_free(SDL_cdlist[i]); - } - } - SDL_numcds = 0; -} - -#endif /* SDL_CDROM_BSDI */ |