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Diffstat (limited to 'distrib/sdl-1.2.12/src/cdrom/linux/SDL_syscdrom.c')
-rw-r--r--distrib/sdl-1.2.12/src/cdrom/linux/SDL_syscdrom.c564
1 files changed, 0 insertions, 564 deletions
diff --git a/distrib/sdl-1.2.12/src/cdrom/linux/SDL_syscdrom.c b/distrib/sdl-1.2.12/src/cdrom/linux/SDL_syscdrom.c
deleted file mode 100644
index 2535b28..0000000
--- a/distrib/sdl-1.2.12/src/cdrom/linux/SDL_syscdrom.c
+++ /dev/null
@@ -1,564 +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_LINUX
-
-/* Functions for system-level CD-ROM audio control */
-
-#include <string.h> /* For strerror() */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <unistd.h>
-#ifdef __LINUX__
-#ifdef HAVE_LINUX_VERSION_H
-/* linux 2.6.9 workaround */
-#include <linux/version.h>
-#if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,9)
-#include <asm/types.h>
-#define __le64 __u64
-#define __le32 __u32
-#define __le16 __u16
-#define __be64 __u64
-#define __be32 __u32
-#define __be16 __u16
-#endif /* linux 2.6.9 workaround */
-#endif /* HAVE_LINUX_VERSION_H */
-#include <linux/cdrom.h>
-#endif
-#ifdef __SVR4
-#include <sys/cdio.h>
-#endif
-
-/* Define this to use the alternative getmntent() code */
-#ifndef __SVR4
-#define USE_MNTENT
-#endif
-
-#ifdef USE_MNTENT
-#if defined(__USLC__)
-#include <sys/mntent.h>
-#else
-#include <mntent.h>
-#endif
-
-#ifndef _PATH_MNTTAB
-#ifdef MNTTAB
-#define _PATH_MNTTAB MNTTAB
-#else
-#define _PATH_MNTTAB "/etc/fstab"
-#endif
-#endif /* !_PATH_MNTTAB */
-
-#ifndef _PATH_MOUNTED
-#define _PATH_MOUNTED "/etc/mtab"
-#endif /* !_PATH_MOUNTED */
-
-#ifndef MNTTYPE_CDROM
-#define MNTTYPE_CDROM "iso9660"
-#endif
-#ifndef MNTTYPE_SUPER
-#define MNTTYPE_SUPER "supermount"
-#endif
-#endif /* USE_MNTENT */
-
-#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);
-
-/* Some ioctl() errno values which occur when the tray is empty */
-#ifndef ENOMEDIUM
-#define ENOMEDIUM ENOENT
-#endif
-#define ERRNO_TRAYEMPTY(errno) \
- ((errno == EIO) || (errno == ENOENT) || \
- (errno == EINVAL) || (errno == ENOMEDIUM))
-
-/* Check a drive to see if it is a CD-ROM */
-static int CheckDrive(char *drive, char *mnttype, struct stat *stbuf)
-{
- int is_cd, cdfd;
- struct cdrom_subchnl 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;
- if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) {
- cdfd = open(drive, (O_RDONLY|O_NONBLOCK), 0);
- if ( cdfd >= 0 ) {
- info.cdsc_format = CDROM_MSF;
- /* Under Linux, EIO occurs when a disk is not present.
- */
- if ( (ioctl(cdfd, CDROMSUBCHNL, &info) == 0) ||
- ERRNO_TRAYEMPTY(errno) ) {
- is_cd = 1;
- }
- close(cdfd);
- }
-#ifdef USE_MNTENT
- /* Even if we can't read it, it might be mounted */
- else if ( mnttype && (SDL_strcmp(mnttype, MNTTYPE_CDROM) == 0) ) {
- is_cd = 1;
- }
-#endif
- }
- 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
- }
-}
-
-#ifdef USE_MNTENT
-static void CheckMounts(const char *mtab)
-{
- FILE *mntfp;
- struct mntent *mntent;
- struct stat stbuf;
-
- mntfp = setmntent(mtab, "r");
- if ( mntfp != NULL ) {
- char *tmp;
- char *mnt_type;
- size_t mnt_type_len;
- char *mnt_dev;
- size_t mnt_dev_len;
-
- while ( (mntent=getmntent(mntfp)) != NULL ) {
- mnt_type_len = SDL_strlen(mntent->mnt_type) + 1;
- mnt_type = SDL_stack_alloc(char, mnt_type_len);
- if (mnt_type == NULL)
- continue; /* maybe you'll get lucky next time. */
-
- mnt_dev_len = SDL_strlen(mntent->mnt_fsname) + 1;
- mnt_dev = SDL_stack_alloc(char, mnt_dev_len);
- if (mnt_dev == NULL) {
- SDL_stack_free(mnt_type);
- continue;
- }
-
- SDL_strlcpy(mnt_type, mntent->mnt_type, mnt_type_len);
- SDL_strlcpy(mnt_dev, mntent->mnt_fsname, mnt_dev_len);
-
- /* Handle "supermount" filesystem mounts */
- if ( SDL_strcmp(mnt_type, MNTTYPE_SUPER) == 0 ) {
- tmp = SDL_strstr(mntent->mnt_opts, "fs=");
- if ( tmp ) {
- SDL_stack_free(mnt_type);
- mnt_type = SDL_strdup(tmp + SDL_strlen("fs="));
- if ( mnt_type ) {
- tmp = SDL_strchr(mnt_type, ',');
- if ( tmp ) {
- *tmp = '\0';
- }
- }
- }
- tmp = SDL_strstr(mntent->mnt_opts, "dev=");
- if ( tmp ) {
- SDL_stack_free(mnt_dev);
- mnt_dev = SDL_strdup(tmp + SDL_strlen("dev="));
- if ( mnt_dev ) {
- tmp = SDL_strchr(mnt_dev, ',');
- if ( tmp ) {
- *tmp = '\0';
- }
- }
- }
- }
- if ( SDL_strcmp(mnt_type, MNTTYPE_CDROM) == 0 ) {
-#ifdef DEBUG_CDROM
- fprintf(stderr, "Checking mount path from %s: %s mounted on %s of %s\n",
- mtab, mnt_dev, mntent->mnt_dir, mnt_type);
-#endif
- if (CheckDrive(mnt_dev, mnt_type, &stbuf) > 0) {
- AddDrive(mnt_dev, &stbuf);
- }
- }
- SDL_stack_free(mnt_dev);
- SDL_stack_free(mnt_type);
- }
- endmntent(mntfp);
- }
-}
-#endif /* USE_MNTENT */
-
-int SDL_SYS_CDInit(void)
-{
- /* checklist: /dev/cdrom, /dev/hd?, /dev/scd? /dev/sr? */
- static char *checklist[] = {
- "cdrom", "?a hd?", "?0 scd?", "?0 sr?", 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';
- }
-#ifdef DEBUG_CDROM
- fprintf(stderr, "Checking CD-ROM drive from SDL_CDROM: %s\n", SDLcdrom);
-#endif
- if ( CheckDrive(SDLcdrom, NULL, &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);
- }
- }
-
-#ifdef USE_MNTENT
- /* Check /dev/cdrom first :-) */
- if (CheckDrive("/dev/cdrom", NULL, &stbuf) > 0) {
- AddDrive("/dev/cdrom", &stbuf);
- }
-
- /* Now check the currently mounted CD drives */
- CheckMounts(_PATH_MOUNTED);
-
- /* Finally check possible mountable drives in /etc/fstab */
- CheckMounts(_PATH_MNTTAB);
-
- /* If we found our drives, there's nothing left to do */
- if ( SDL_numcds > 0 ) {
- return(0);
- }
-#endif /* USE_MNTENT */
-
- /* Scan the system for CD-ROM drives.
- Not always 100% reliable, so use the USE_MNTENT code above first.
- */
- 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/%s", &checklist[i][3]);
- insert = SDL_strchr(drive, '?');
- if ( insert != NULL ) {
- *insert = j;
- }
-#ifdef DEBUG_CDROM
- fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive);
-#endif
- switch (CheckDrive(drive, NULL, &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]);
-#ifdef DEBUG_CDROM
- fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive);
-#endif
- if ( CheckDrive(drive, NULL, &stbuf) > 0 ) {
- AddDrive(drive, &stbuf);
- }
- }
- }
- return(0);
-}
-
-/* General ioctl() CD-ROM command function */
-static int SDL_SYS_CDioctl(int id, int command, void *arg)
-{
- int retval;
-
- retval = ioctl(id, command, arg);
- if ( retval < 0 ) {
- SDL_SetError("ioctl() error: %s", strerror(errno));
- }
- return(retval);
-}
-
-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), 0));
-}
-
-static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
-{
- struct cdrom_tochdr toc;
- int i, okay;
- struct cdrom_tocentry entry;
-
- okay = 0;
- if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc) == 0 ) {
- cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1;
- if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
- cdrom->numtracks = SDL_MAX_TRACKS;
- }
- /* Read all the track TOC entries */
- for ( i=0; i<=cdrom->numtracks; ++i ) {
- if ( i == cdrom->numtracks ) {
- cdrom->track[i].id = CDROM_LEADOUT;
- } else {
- cdrom->track[i].id = toc.cdth_trk0+i;
- }
- entry.cdte_track = cdrom->track[i].id;
- entry.cdte_format = CDROM_MSF;
- if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY,
- &entry) < 0 ) {
- break;
- } else {
- if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) {
- cdrom->track[i].type = SDL_DATA_TRACK;
- } else {
- cdrom->track[i].type = SDL_AUDIO_TRACK;
- }
- cdrom->track[i].offset = MSF_TO_FRAMES(
- entry.cdte_addr.msf.minute,
- entry.cdte_addr.msf.second,
- entry.cdte_addr.msf.frame);
- cdrom->track[i].length = 0;
- if ( i > 0 ) {
- cdrom->track[i-1].length =
- cdrom->track[i].offset-
- cdrom->track[i-1].offset;
- }
- }
- }
- 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 cdrom_tochdr toc;
- struct cdrom_subchnl info;
-
- info.cdsc_format = CDROM_MSF;
- if ( ioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) {
- if ( ERRNO_TRAYEMPTY(errno) ) {
- status = CD_TRAYEMPTY;
- } else {
- status = CD_ERROR;
- }
- } else {
- switch (info.cdsc_audiostatus) {
- case CDROM_AUDIO_INVALID:
- case CDROM_AUDIO_NO_STATUS:
- /* Try to determine if there's a CD available */
- if (ioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0)
- status = CD_STOPPED;
- else
- status = CD_TRAYEMPTY;
- break;
- case CDROM_AUDIO_COMPLETED:
- status = CD_STOPPED;
- break;
- case CDROM_AUDIO_PLAY:
- status = CD_PLAYING;
- break;
- case CDROM_AUDIO_PAUSED:
- /* Workaround buggy CD-ROM drive */
- if ( info.cdsc_trk == CDROM_LEADOUT ) {
- status = CD_STOPPED;
- } else {
- status = CD_PAUSED;
- }
- break;
- default:
- status = CD_ERROR;
- break;
- }
- }
- if ( position ) {
- if ( status == CD_PLAYING || (status == CD_PAUSED) ) {
- *position = MSF_TO_FRAMES(
- info.cdsc_absaddr.msf.minute,
- info.cdsc_absaddr.msf.second,
- info.cdsc_absaddr.msf.frame);
- } else {
- *position = 0;
- }
- }
- return(status);
-}
-
-/* Start play */
-static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
-{
- struct cdrom_msf playtime;
-
- FRAMES_TO_MSF(start,
- &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0);
- FRAMES_TO_MSF(start+length,
- &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1);
-#ifdef DEBUG_CDROM
- fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
- playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
- playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
-#endif
- return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime));
-}
-
-/* Pause play */
-static int SDL_SYS_CDPause(SDL_CD *cdrom)
-{
- return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0));
-}
-
-/* Resume play */
-static int SDL_SYS_CDResume(SDL_CD *cdrom)
-{
- return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0));
-}
-
-/* Stop play */
-static int SDL_SYS_CDStop(SDL_CD *cdrom)
-{
- return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0));
-}
-
-/* Eject the CD-ROM */
-static int SDL_SYS_CDEject(SDL_CD *cdrom)
-{
- return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 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 ) {
- SDL_free(SDL_cdlist[i]);
- }
- SDL_numcds = 0;
- }
-}
-
-#endif /* SDL_CDROM_LINUX */
generated by cgit v1.1 at 2024-12-22 16:19:35 +0000