diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/cdrom/osf/SDL_syscdrom.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/cdrom/osf/SDL_syscdrom.c | 444 |
1 files changed, 444 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/cdrom/osf/SDL_syscdrom.c b/distrib/sdl-1.2.15/src/cdrom/osf/SDL_syscdrom.c new file mode 100644 index 0000000..8478a7b --- /dev/null +++ b/distrib/sdl-1.2.15/src/cdrom/osf/SDL_syscdrom.c @@ -0,0 +1,444 @@ +/* + Tru64 audio module for SDL (Simple DirectMedia Layer) + Copyright (C) 2003 + + 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 + + +*/ +#include "SDL_config.h" + +#ifdef SDL_CDROM_OSF + +/* Functions for system-level CD-ROM audio control */ + +/* #define DEBUG_CDROM 1 */ + +#include <sys/types.h> +#include <dirent.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <io/cam/cdrom.h> +#include <io/cam/rzdisk.h> +#include <io/common/devgetinfo.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); + +/* Check a drive to see if it is a CD-ROM */ +/* Caution!! Not tested. */ +static int CheckDrive(char *drive, struct stat *stbuf) +{ + int cdfd, is_cd = 0; + struct mode_sel_sns_params msp; + struct inquiry_info inq; + +#ifdef DEBUG_CDROM + char *devtype[] = {"Disk", "Tape", "Printer", "Processor", "WORM", + "CD-ROM", "Scanner", "Optical", "Changer", "Comm", "Unknown"}; +#endif + + bzero(&msp, sizeof(msp)); + bzero(&inq, sizeof(inq)); + + /* If it doesn't exist, return -1 */ + if ( stat(drive, stbuf) < 0 ) { + return(-1); + } + + if ( (cdfd = open(drive, (O_RDWR|O_NDELAY), 0)) >= 0 ) { + msp.msp_addr = (caddr_t) &inq; + msp.msp_pgcode = 0; + msp.msp_pgctrl = 0; + msp.msp_length = sizeof(inq); + msp.msp_setps = 0; + + if ( ioctl(cdfd, SCSI_GET_INQUIRY_DATA, &msp) ) + return (0); + +#ifdef DEBUG_CDROM + fprintf(stderr, "Device Type: %s\n", devtype[inq.perfdt]); + fprintf(stderr, "Vendor: %.8s\n", inq.vndrid); + fprintf(stderr, "Product: %.8s\n", inq.prodid); + fprintf(stderr, "Revision: %.8s\n", inq.revlvl); +#endif + if ( inq.perfdt == DTYPE_RODIRECT ) + 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] = 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: + * + * Tru64 5.X (/dev/rdisk/cdrom?c) + * dir: /dev/rdisk, name: cdrom + * + * Digital UNIX 4.0X (/dev/rrz?c) + * dir: /dev, name: rrz + * + */ + struct { + char *dir; + char *name; + } checklist[] = { + {"/dev/rdisk", "cdrom"}, + {"/dev", "rrz"}, + {NULL, NULL}}; + char drive[32]; + char *SDLcdrom; + int i, j, exists; + 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].dir; ++i) { + DIR *devdir; + struct dirent *devent; + int name_len; + + devdir = opendir(checklist[i].dir); + if (devdir) { + name_len = SDL_strlen(checklist[i].name); + while (devent = readdir(devdir)) + if (SDL_memcmp(checklist[i].name, devent->d_name, name_len) == 0) + if (devent->d_name[devent->d_namlen-1] == 'c') { + SDL_snprintf(drive, SDL_arraysize(drive), "%s/%s", checklist[i].dir, devent->d_name); +#ifdef DEBUG_CDROM + fprintf(stderr, "Try to add drive: %s\n", drive); +#endif + if ( CheckDrive(drive, &stbuf) > 0 ) + AddDrive(drive, &stbuf); + } + closedir(devdir); + } else { +#ifdef DEBUG_CDROM + fprintf(stderr, "cannot open dir: %s\n", checklist[i].dir); +#endif + } + } + return (0); +} + +static const char *SDL_SYS_CDName(int drive) +{ + return(SDL_cdlist[drive]); +} + +static int SDL_SYS_CDOpen(int drive) +{ + /* O_RDWR: To use ioctl(fd, SCSI_STOP_UNIT) */ + return(open(SDL_cdlist[drive], (O_RDWR|O_NDELAY), 0)); +} + +static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) +{ + struct cd_toc toc; + struct cd_toc_header hdr; + struct cd_toc_entry *cdte; + int i; + int okay = 0; + if ( ioctl(cdrom->id, CDROM_TOC_HEADER, &hdr) ) { + fprintf(stderr,"ioctl error CDROM_TOC_HEADER\n"); + return -1; + } + cdrom->numtracks = hdr.th_ending_track - hdr.th_starting_track + 1; + if ( cdrom->numtracks > SDL_MAX_TRACKS ) { + cdrom->numtracks = SDL_MAX_TRACKS; + } +#ifdef DEBUG_CDROM + fprintf(stderr,"hdr.th_data_len1 = %d\n", hdr.th_data_len1); + fprintf(stderr,"hdr.th_data_len0 = %d\n", hdr.th_data_len0); + fprintf(stderr,"hdr.th_starting_track = %d\n", hdr.th_starting_track); + fprintf(stderr,"hdr.th_ending_track = %d\n", hdr.th_ending_track); + fprintf(stderr,"cdrom->numtracks = %d\n", cdrom->numtracks); +#endif + toc.toc_address_format = CDROM_LBA_FORMAT; + toc.toc_starting_track = 0; + toc.toc_alloc_length = (hdr.th_data_len1 << 8) + + hdr.th_data_len0 + sizeof(hdr); + if ( (toc.toc_buffer = alloca(toc.toc_alloc_length)) == NULL) { + fprintf(stderr,"cannot allocate toc.toc_buffer\n"); + return -1; + } + + bzero (toc.toc_buffer, toc.toc_alloc_length); + if (ioctl(cdrom->id, CDROM_TOC_ENTRYS, &toc)) { + fprintf(stderr,"ioctl error CDROM_TOC_ENTRYS\n"); + return -1; + } + + cdte =(struct cd_toc_entry *) ((char *) toc.toc_buffer + sizeof(hdr)); + for (i=0; i <= cdrom->numtracks; ++i) { + if (i == cdrom->numtracks ) { + cdrom->track[i].id = 0xAA;; + } else { + cdrom->track[i].id = hdr.th_starting_track + i; + } + + cdrom->track[i].type = + cdte[i].te_control & CDROM_DATA_TRACK; + cdrom->track[i].offset = + cdte[i].te_absaddr.lba.addr3 << 24 | + cdte[i].te_absaddr.lba.addr2 << 16 | + cdte[i].te_absaddr.lba.addr1 << 8 | + cdte[i].te_absaddr.lba.addr0; + cdrom->track[i].length = 0; + if ( i > 0 ) { + cdrom->track[i - 1].length = + cdrom->track[i].offset - + cdrom->track[i - 1].offset; + } + } +#ifdef DEBUG_CDROM + for (i = 0; i <= cdrom->numtracks; i++) { + fprintf(stderr,"toc_entry[%d].te_track_number = %d\n", + i,cdte[i].te_track_number); + fprintf(stderr,"cdrom->track[%d].id = %d\n", i,cdrom->track[i].id); + fprintf(stderr,"cdrom->track[%d].type = %x\n", i,cdrom->track[i].type); + fprintf(stderr,"cdrom->track[%d].offset = %d\n", i,cdrom->track[i].offset); + fprintf(stderr,"cdrom->track[%d].length = %d\n", i,cdrom->track[i].length); + } +#endif + 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_sub_channel sc; + struct cd_subc_channel_data scd; + + sc.sch_address_format = CDROM_LBA_FORMAT; + sc.sch_data_format = CDROM_CURRENT_POSITION; + sc.sch_track_number = 0; + sc.sch_alloc_length = sizeof(scd); + sc.sch_buffer = (caddr_t)&scd; + if ( ioctl(cdrom->id, CDROM_READ_SUBCHANNEL, &sc) ) { + status = CD_ERROR; + fprintf(stderr,"ioctl error CDROM_READ_SUBCHANNEL \n"); + } else { + switch (scd.scd_header.sh_audio_status) { + case AS_AUDIO_INVALID: + status = CD_STOPPED; + break; + case AS_PLAY_IN_PROGRESS: + status = CD_PLAYING; + break; + case AS_PLAY_PAUSED: + status = CD_PAUSED; + break; + case AS_PLAY_COMPLETED: + status = CD_STOPPED; + break; + case AS_PLAY_ERROR: + status = CD_ERROR; + break; + case AS_NO_STATUS: + status = CD_STOPPED; + break; + default: + status = CD_ERROR; + break; + } +#ifdef DEBUG_CDROM + fprintf(stderr,"scd.scd_header.sh_audio_status = %x\n", + scd.scd_header.sh_audio_status); +#endif + } + if (position) { + if (status == CD_PLAYING || (status == CD_PAUSED) ) { + *position = + scd.scd_position_data.scp_absaddr.lba.addr3 << 24 | + scd.scd_position_data.scp_absaddr.lba.addr2 << 16 | + scd.scd_position_data.scp_absaddr.lba.addr1 << 8 | + scd.scd_position_data.scp_absaddr.lba.addr0; + } else { + *position = 0; + } + } + + return status; +} + +/* Start play */ +static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) +{ +/* + * Play MSF + */ + struct cd_play_audio_msf msf; + int end; + + bzero(&msf, sizeof(msf)); + end = start +length; + FRAMES_TO_MSF(start + 150, /* LBA = 4500*M + 75*S + F - 150 */ + &msf.msf_starting_M_unit, + &msf.msf_starting_S_unit, + &msf.msf_starting_F_unit); + FRAMES_TO_MSF(end + 150, /* LBA = 4500*M + 75*S + F - 150 */ + &msf.msf_ending_M_unit, + &msf.msf_ending_S_unit, + &msf.msf_ending_F_unit); + + return(ioctl(cdrom->id, CDROM_PLAY_AUDIO_MSF, &msf)); +} + +/* Pause play */ +static int SDL_SYS_CDPause(SDL_CD *cdrom) +{ + return(ioctl(cdrom->id, CDROM_PAUSE_PLAY)); +} + +/* Resume play */ +static int SDL_SYS_CDResume(SDL_CD *cdrom) +{ + return(ioctl(cdrom->id, CDROM_RESUME_PLAY)); +} + +/* Stop play */ +static int SDL_SYS_CDStop(SDL_CD *cdrom) +{ + return(ioctl(cdrom->id, SCSI_STOP_UNIT)); +} + +/* Eject the CD-ROM */ +static int SDL_SYS_CDEject(SDL_CD *cdrom) +{ + return(ioctl(cdrom->id, CDROM_EJECT_CADDY)); +} + +/* 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_OSF */ |