diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/cdrom/bsdi/SDL_syscdrom.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/cdrom/bsdi/SDL_syscdrom.c | 542 |
1 files changed, 542 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/cdrom/bsdi/SDL_syscdrom.c b/distrib/sdl-1.2.15/src/cdrom/bsdi/SDL_syscdrom.c new file mode 100644 index 0000000..61edb81 --- /dev/null +++ b/distrib/sdl-1.2.15/src/cdrom/bsdi/SDL_syscdrom.c @@ -0,0 +1,542 @@ +/* + 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 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 */ |