--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cdrom/beos/SDL_syscdrom.cc	Sat Aug 18 22:03:11 2001 +0000
@@ -0,0 +1,414 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+    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
+
+    Sam Lantinga
+    slouken@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#endif
+
+/* Functions for system-level CD-ROM audio control on BeOS
+   (not completely implemented yet)
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <scsi.h>
+#include <Directory.h>
+#include <Entry.h>
+#include <Path.h>
+
+#include "SDL_error.h"
+#include "SDL_cdrom.h"
+extern "C" {
+#include "SDL_syscdrom.h"
+}
+
+/* Constants to help us get at the SCSI table-of-contents info */
+#define CD_NUMTRACKS(toc)	toc.toc_data[3]
+#define CD_TRACK(toc, track)	(&toc.toc_data[6+(track)*8])
+#define CD_TRACK_N(toc, track)	CD_TRACK(toc, track)[0]
+#define CD_TRACK_M(toc, track)	CD_TRACK(toc, track)[3]
+#define CD_TRACK_S(toc, track)	CD_TRACK(toc, track)[4]
+#define CD_TRACK_F(toc, track)	CD_TRACK(toc, track)[5]
+
+/* Constants to help us get at the SCSI position info */
+#define POS_TRACK(pos)	pos.position[6]
+#define POS_ABS_M(pos)	pos.position[9]
+#define POS_ABS_S(pos)	pos.position[10]
+#define POS_ABS_F(pos)	pos.position[11]
+#define POS_REL_M(pos)	pos.position[13]
+#define POS_REL_S(pos)	pos.position[14]
+#define POS_REL_F(pos)	pos.position[15]
+
+/* 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];
+
+/* 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);
+int try_dir(const char *directory);
+
+
+/* Check a drive to see if it is a CD-ROM */
+static int CheckDrive(char *drive)
+{
+	struct stat stbuf;
+	int is_cd, cdfd;
+	device_geometry info;
+
+	/* 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;
+	cdfd = open(drive, 0);
+	if ( cdfd >= 0 ) {
+		if ( ioctl(cdfd, B_GET_GEOMETRY, &info) == B_NO_ERROR ) {
+			if ( info.device_type == B_CD ) {
+				is_cd = 1;
+			}
+		}
+		close(cdfd);
+	} else {
+		/* This can happen when the drive is open .. (?) */;
+		is_cd = 1;
+	}
+	return(is_cd);
+}
+
+/* Add a CD-ROM drive to our list of valid drives */
+static void AddDrive(char *drive)
+{
+	int i;
+
+	if ( SDL_numcds < MAX_DRIVES ) {
+		/* 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_numcds;
+#ifdef CDROM_DEBUG
+  fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
+#endif
+	}
+}
+
+/* IDE bus scanning magic */
+enum {
+	IDE_GET_DEVICES_INFO = B_DEVICE_OP_CODES_END + 50,
+};
+struct ide_ctrl_info {
+	bool	ide_0_present;
+	bool	ide_0_master_present;
+	bool	ide_0_slave_present;
+	int	ide_0_master_type;
+	int	ide_0_slave_type;
+	bool	ide_1_present;
+	bool	ide_1_master_present;
+	bool	ide_1_slave_present;
+	int	ide_1_master_type;
+	int	ide_1_slave_type;
+};
+
+int  SDL_SYS_CDInit(void)
+{
+	char *SDLcdrom;
+	int raw_fd;
+	struct ide_ctrl_info info;
+
+	/* 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 = getenv("SDL_CDROM");	/* ':' separated list of devices */
+	if ( SDLcdrom != NULL ) {
+		char *cdpath, *delim;
+		cdpath = (char *)malloc(strlen(SDLcdrom)+1);
+		if ( cdpath != NULL ) {
+			strcpy(cdpath, SDLcdrom);
+			SDLcdrom = cdpath;
+			do {
+				delim = strchr(SDLcdrom, ':');
+				if ( delim ) {
+					*delim++ = '\0';
+				}
+				if ( CheckDrive(SDLcdrom) > 0 ) {
+					AddDrive(SDLcdrom);
+				}
+				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);
+		}
+	}
+	
+	/* Scan the system for CD-ROM drives */
+	try_dir("/dev/disk");
+	return 0;
+}
+
+
+int try_dir(const char *directory)
+{ 
+	BDirectory dir; 
+	dir.SetTo(directory); 
+	if(dir.InitCheck() != B_NO_ERROR) { 
+		return false; 
+	} 
+	dir.Rewind(); 
+	BEntry entry; 
+	while(dir.GetNextEntry(&entry) >= 0) { 
+		BPath path; 
+		const char *name; 
+		entry_ref e; 
+		
+		if(entry.GetPath(&path) != B_NO_ERROR) 
+			continue; 
+		name = path.Path(); 
+		
+		if(entry.GetRef(&e) != B_NO_ERROR) 
+			continue; 
+
+		if(entry.IsDirectory()) { 
+			if(strcmp(e.name, "floppy") == 0) 
+				continue; /* ignore floppy (it is not silent)  */
+			int devfd = try_dir(name);
+			if(devfd >= 0)
+				return devfd;
+		} 
+		else { 
+			int devfd; 
+			device_geometry g; 
+
+			if(strcmp(e.name, "raw") != 0) 
+				continue; /* ignore partitions */
+
+			devfd = open(name, O_RDONLY); 
+			if(devfd < 0) 
+				continue; 
+
+			if(ioctl(devfd, B_GET_GEOMETRY, &g, sizeof(g)) >= 0) {
+				if(g.device_type == B_CD)
+				{
+				AddDrive(strdup(name));
+				}
+			}
+			close(devfd);
+		} 
+	}
+	return B_ERROR;
+}
+
+
+/* General ioctl() CD-ROM command function */
+static int SDL_SYS_CDioctl(int index, int command, void *arg)
+{
+	int okay;
+	int fd;
+
+	okay = 0;
+	fd = open(SDL_cdlist[index], 0);
+	if ( fd >= 0 ) {
+		if ( ioctl(fd, command, arg) == B_NO_ERROR ) {
+			okay = 1;
+		}
+		close(fd);
+	}
+	return(okay ? 0 : -1);
+}
+
+static const char *SDL_SYS_CDName(int drive)
+{
+	return(SDL_cdlist[drive]);
+} 
+
+static int SDL_SYS_CDOpen(int drive)
+{
+	return(drive);
+}
+
+static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
+{
+	int i;
+	scsi_toc toc;
+
+	if ( SDL_SYS_CDioctl(cdrom->id, B_SCSI_GET_TOC, &toc) == 0 ) {
+		cdrom->numtracks = CD_NUMTRACKS(toc);
+		if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
+			cdrom->numtracks = SDL_MAX_TRACKS;
+		}
+		for ( i=0; i<=cdrom->numtracks; ++i ) {
+			cdrom->track[i].id = CD_TRACK_N(toc, i);
+			/* FIXME:  How do we tell on BeOS? */
+			cdrom->track[i].type = SDL_AUDIO_TRACK;
+			cdrom->track[i].offset = MSF_TO_FRAMES(
+							CD_TRACK_M(toc, i),
+							CD_TRACK_S(toc, i),
+							CD_TRACK_F(toc, i));
+			cdrom->track[i].length = 0;
+			if ( i > 0 ) {
+				cdrom->track[i-1].length =
+						cdrom->track[i].offset-
+						cdrom->track[i-1].offset;
+			}
+		}
+		return(0);
+	} else {
+		return(-1);
+	}
+}
+
+/* Get CD-ROM status */
+static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
+{
+	CDstatus status;
+	int fd;
+	int cur_frame;
+	scsi_position pos;
+
+	fd = open(SDL_cdlist[cdrom->id], 0);
+	cur_frame = 0;
+	if ( fd >= 0 ) {
+		if ( ioctl(fd, B_SCSI_GET_POSITION, &pos) == B_NO_ERROR ) {
+			cur_frame = MSF_TO_FRAMES(
+				POS_ABS_M(pos), POS_ABS_S(pos), POS_ABS_F(pos));
+		}
+		if ( ! pos.position[1] || (pos.position[1] >= 0x13) ||
+			((pos.position[1] == 0x12) && (!pos.position[6])) ) {
+			status = CD_STOPPED;
+		} else
+		if ( pos.position[1] == 0x11 ) {
+			status = CD_PLAYING;
+		} else {
+			status = CD_PAUSED;
+		}
+		close(fd);
+	} else {
+		status = CD_TRAYEMPTY;
+	}
+	if ( position ) {
+		*position = cur_frame;
+	}
+	return(status);
+}
+
+/* Start play */
+static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
+{
+	int okay;
+	int fd;
+	scsi_play_position pos;
+
+	okay = 0;
+	fd = open(SDL_cdlist[cdrom->id], 0);
+	if ( fd >= 0 ) {
+		FRAMES_TO_MSF(start, &pos.start_m, &pos.start_s, &pos.start_f);
+		FRAMES_TO_MSF(start+length, &pos.end_m, &pos.end_s, &pos.end_f);
+		if ( ioctl(fd, B_SCSI_PLAY_POSITION, &pos) == B_NO_ERROR ) {
+			okay = 1;
+		}
+		close(fd);
+	}
+	return(okay ? 0 : -1);
+}
+
+/* Pause play */
+static int SDL_SYS_CDPause(SDL_CD *cdrom)
+{
+	return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_PAUSE_AUDIO, 0));
+}
+
+/* Resume play */
+static int SDL_SYS_CDResume(SDL_CD *cdrom)
+{
+	return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_RESUME_AUDIO, 0));
+}
+
+/* Stop play */
+static int SDL_SYS_CDStop(SDL_CD *cdrom)
+{
+	return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_STOP_AUDIO, 0));
+}
+
+/* Eject the CD-ROM */
+static int SDL_SYS_CDEject(SDL_CD *cdrom)
+{
+	return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_EJECT, 0));
+}
+
+/* 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 ) {
+			free(SDL_cdlist[i]);
+		}
+		SDL_numcds = 0;
+	}
+}
+