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-rw-r--r--src/cdrom/bsdi/SDL_syscdrom.c542
1 files changed, 542 insertions, 0 deletions
diff --git a/src/cdrom/bsdi/SDL_syscdrom.c b/src/cdrom/bsdi/SDL_syscdrom.c
new file mode 100644
index 0000000..4e00665
--- /dev/null
+++ b/src/cdrom/bsdi/SDL_syscdrom.c
@@ -0,0 +1,542 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2009 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 */
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