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Diffstat (limited to 'kscd/libwm/plat_linux.c')
| -rw-r--r-- | kscd/libwm/plat_linux.c | 803 |
1 files changed, 803 insertions, 0 deletions
diff --git a/kscd/libwm/plat_linux.c b/kscd/libwm/plat_linux.c new file mode 100644 index 00000000..58768a40 --- /dev/null +++ b/kscd/libwm/plat_linux.c @@ -0,0 +1,803 @@ +/* + * $Id$ + * + * This file is part of WorkMan, the civilized CD player library + * (c) 1991-1997 by Steven Grimm (original author) + * (c) by Dirk F�rsterling (current 'author' = maintainer) + * The maintainer can be contacted by his e-mail address: + * + * 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 + * + * + * Linux-specific drive control routines. Very similar to the Sun module. + */ + +#if defined(__linux__) + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <unistd.h> +#include <string.h> +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/wait.h> +/* Try to get around bug #29274 */ +#include <linux/version.h> +#if 0 +/* this breaks the build on ia64 and s390 for example. + sys/types.h is already included and should provide __u64. + please tell where we really need this and let's try to find + a working #if case for everyone ... [email protected] */ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,50)) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,21) && LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) +#undef __GNUC__ +typedef unsigned long long __u64; +#endif +#endif + +#include "include/wm_config.h" +#include "include/wm_struct.h" +#include "include/wm_cdtext.h" + +#if defined(BSD_MOUNTTEST) + #include <mntent.h> +#else + /* + * this is for glibc 2.x which defines ust structure in + * ustat.h not stat.h + */ + #ifdef __GLIBC__ + #include <sys/ustat.h> + #endif +#endif + + +#include <sys/time.h> +#include <sys/ioctl.h> + +#ifndef __GNUC__ +#define __GNUC__ 1 +#endif +/* needed for vanilla kernel headers, which do provide __u64 only + for ansi */ +#undef __STRICT_ANSI__ +/* needed for non-ansi kernel headers */ +#define asm __asm__ +#define inline __inline__ +#include <asm/types.h> +#include <linux/cdrom.h> +#undef asm +#undef inline + +#include "include/wm_cdda.h" +#include "include/wm_struct.h" +#include "include/wm_platform.h" +#include "include/wm_cdrom.h" +#include "include/wm_scsi.h" +#include "include/wm_helpers.h" + +#ifdef OSS_SUPPORT +#include <linux/soundcard.h> +#define CD_CHANNEL SOUND_MIXER_CD +#endif + +#define WM_MSG_CLASS WM_MSG_CLASS_PLATFORM + +#define max(a,b) ((a) > (b) ? (a) : (b)) + +#ifdef LINUX_SCSI_PASSTHROUGH +/* this is from <scsi/scsi_ioctl.h> */ +# define SCSI_IOCTL_SEND_COMMAND 1 +#endif + +#ifdef BUILD_CDDA +int gen_cdda_init( struct wm_drive *d ); +#endif + +int min_volume = 0; +int max_volume = 255; + +#ifdef OSS_SUPPORT +int mixer; +char mixer_dev_name[20] = "/dev/mixer"; +#endif + +/*-------------------------------------------------------* + * + * + * CD-ROM drive functions. + * + * + *-------------------------------------------------------*/ + +/*--------------------------------------------------------* + * Initialize the drive. A no-op for the generic driver. + *--------------------------------------------------------*/ +int +gen_init( struct wm_drive *d ) +{ + return (0); +} /* gen_init() */ + +/*---------------------------------------------------------------------------* + * Open the CD device and figure out what kind of drive is attached. + *---------------------------------------------------------------------------*/ +int +wmcd_open( struct wm_drive *d ) +{ + int fd; + char vendor[32], model[32], rev[32]; + + if (d->cd_device == NULL) + d->cd_device = DEFAULT_CD_DEVICE; + + + if (d->fd >= 0) { /* Device already open? */ +/* wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_open(): [device is open (fd=%d)]\n", d->fd);*/ + return (0); + } + + fd = open(d->cd_device, O_RDONLY | O_NONBLOCK); + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_open(): device=%s fd=%d\n", d->cd_device, fd); + + if (fd < 0) + return -errno; + + /* Now fill in the relevant parts of the wm_drive structure. */ + d->fd = fd; + + /* + * See if we can do digital audio. + */ +#if defined(BUILD_CDDA) + if(d->cdda && gen_cdda_init(d)) { + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_open(): failed in gen_cdda_init\n"); + gen_close(d); + return -1; + } +#endif + + /* Can we figure out the drive type? */ + if (wm_scsi_get_drive_type(d, vendor, model, rev)) { + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_open(): inquiry failed\n"); + strcpy(vendor, "Generic"); + strcpy(model, "drive type"); + strcpy(rev, ""); + } + + if(find_drive_struct(vendor, model, rev) < 0) { + gen_close(d); + return -1; + } + + if(d->proto->gen_init) + return (d->proto->gen_init)(d); + + return 0; +} /* wmcd_open() */ + +/* + * Re-Open the device if it is open. + */ +int +wmcd_reopen( struct wm_drive *d ) +{ + int status; + int tries = 0; + + do { + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_reopen\n"); + gen_close(d); + wm_susleep( 1000 ); + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "calls wmcd_open()\n"); + status = wmcd_open( d ); /* open it as usual */ + wm_susleep( 1000 ); + tries++; + } while ( (status != 0) && (tries < 10) ); + return status; +} /* wmcd_reopen() */ + +/*---------------------------------------------* + * Send an arbitrary SCSI command to a device. + *---------------------------------------------*/ +int +wm_scsi( struct wm_drive *d, unsigned char *cdb, int cdblen, + void *retbuf, int retbuflen, int getreply ) +{ +#ifdef LINUX_SCSI_PASSTHROUGH + + char *cmd; + int cmdsize; + + cmdsize = 2 * sizeof(int); + if (retbuf) + { + if (getreply) cmdsize += max(cdblen, retbuflen); + else cmdsize += (cdblen + retbuflen); + } + else cmdsize += cdblen; + + cmd = malloc(cmdsize); + if (cmd == NULL) + return (-1); + + ((int*)cmd)[0] = cdblen + ((retbuf && !getreply) ? retbuflen : 0); + ((int*)cmd)[1] = ((retbuf && getreply) ? retbuflen : 0); + + memcpy(cmd + 2*sizeof(int), cdb, cdblen); + if (retbuf && !getreply) + memcpy(cmd + 2*sizeof(int) + cdblen, retbuf, retbuflen); + + if (ioctl(d->fd, SCSI_IOCTL_SEND_COMMAND, cmd)) + { + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "%s: ioctl() failure\n", __FILE__); + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "command buffer is:\n"); + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "%02x %02x %02x %02x %02x %02x\n", + cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], cmd[5]); + free(cmd); + return (-1); + } + + if (retbuf && getreply) + memcpy(retbuf, cmd + 2*sizeof(int), retbuflen); + + free(cmd); + return 0; + +#else /* Linux SCSI passthrough*/ +/*----------------------------------------* + * send packet over cdrom interface + * kernel >= 2.2.16 + *----------------------------------------*/ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,2,15)) + + struct cdrom_generic_command cdc; + struct request_sense sense; + int capability; + + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wm_scsi over CDROM_SEND_PACKET entered\n"); + + capability = ioctl(d->fd, CDROM_GET_CAPABILITY); + + if(!(capability & CDC_GENERIC_PACKET)) + { + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "your CDROM or/and kernel don't support CDC_GENERIC_PACKET ...\n"); + return -1; + } + + memset(&cdc, 0, sizeof(struct cdrom_generic_command)); + memset(&sense, 0, sizeof(struct request_sense)); + + memcpy(cdc.cmd, cdb, cdblen); + + cdc.buffer = retbuf; + cdc.buflen = retbuflen; + cdc.stat = 0; + cdc.sense = &sense; + cdc.data_direction = getreply?CGC_DATA_READ:CGC_DATA_WRITE; + + /* sendpacket_over_cdrom_interface() */ + return ioctl(d->fd, CDROM_SEND_PACKET, &cdc); +#endif /* CDROM_SEND_PACKET */ + printf("ERROR: this binary was compiled without CDROM GENERIC PACKET SUPPORT. kernel version < 2.2.16?\n"); + printf("ERROR: if you have a SCSI CDROM, rebuild it with a #define LINUX_SCSI_PASSTHROUGH\n"); + return (-1); +#endif +} /* wm_scsi */ + +int +gen_close( struct wm_drive *d ) +{ + if(d->fd != -1) { + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "closing the device\n"); + close(d->fd); + d->fd = -1; + } + return 0; +} + +/*--------------------------------* + * Keep the CD open all the time. + * disabled, analogous to 1.4b3 + *--------------------------------* +void +keep_cd_open( void ) +{ + int fd; + struct flock fl; + extern end; + + + for (fd = 0; fd < 256; fd++) + close(fd); + + if (fork()) + exit(0); + +#if defined(O_NOFOLLOW) + if ((fd = open("/tmp/cd.lock", O_RDWR | O_CREAT | O_NOFOLLOW, 0666)) < 0) +#else + if ((fd = open("/tmp/cd.lock", O_RDWR | O_CREAT, 0666)) < 0) +#endif + exit(0); + fl.l_type = F_WRLCK; + fl.l_whence = 0; + fl.l_start = 0; + fl.l_len = 0; + if (fcntl(fd, F_SETLK, &fl) < 0) + exit(0); + + if (open(cd_device, 0) >= 0) + { + brk(&end); + pause(); + } + + exit(0); +} +*/ + +/*--------------------------------------------------------------------------* + * Get the current status of the drive: the current play mode, the absolute + * position from start of disc (in frames), and the current track and index + * numbers if the CD is playing or paused. + *--------------------------------------------------------------------------*/ +int +gen_get_drive_status( struct wm_drive *d, int oldmode, + int *mode, int *pos, int *track, int *ind ) +{ + struct cdrom_subchnl sc; + int ret; + +#ifdef SBPCD_HACK + static int prevpos = 0; +#endif + + + /* Is the device open? */ + if (d->fd < 0) { + ret = wmcd_open(d); + if(ret < 0) /* error */ + return ret; + + if(ret == 1) { + /* retry */ + *mode = WM_CDM_UNKNOWN; + return 0; + } + } + + /* Try to get rid of the door locking */ + /* Don't care about return value. If it */ + /* works - fine. If not - ... */ + ioctl(d->fd, CDROM_LOCKDOOR, 0); + + *mode = WM_CDM_UNKNOWN; + + sc.cdsc_format = CDROM_MSF; + +#if defined(BUILD_CDDA) + IFCDDA(d) { + if(!cdda_get_drive_status(d, oldmode, mode, pos, track, ind)) { + if(*mode == WM_CDM_STOPPED) + *mode = WM_CDM_UNKNOWN; /* dont believe */ + } + } else +#endif + if(!ioctl(d->fd, CDROMSUBCHNL, &sc)) { + switch (sc.cdsc_audiostatus) { + case CDROM_AUDIO_PLAY: + *mode = WM_CDM_PLAYING; + *track = sc.cdsc_trk; + *ind = sc.cdsc_ind; + *pos = sc.cdsc_absaddr.msf.minute * 60 * 75 + + sc.cdsc_absaddr.msf.second * 75 + + sc.cdsc_absaddr.msf.frame; +#ifdef SBPCD_HACK + if( *pos < prevpos ) { + if( (prevpos - *pos) < 75 ) { + *mode = WM_CDM_TRACK_DONE; + } + } + + prevpos = *pos; +#endif + break; + + case CDROM_AUDIO_PAUSED: + if (oldmode == WM_CDM_PLAYING || oldmode == WM_CDM_PAUSED) { + *mode = WM_CDM_PAUSED; + *track = sc.cdsc_trk; + *ind = sc.cdsc_ind; + *pos = sc.cdsc_absaddr.msf.minute * 60 * 75 + + sc.cdsc_absaddr.msf.second * 75 + + sc.cdsc_absaddr.msf.frame; + } else + *mode = WM_CDM_STOPPED; + break; + + case CDROM_AUDIO_NO_STATUS: + *mode = WM_CDM_STOPPED; + break; + + case CDROM_AUDIO_COMPLETED: + *mode = WM_CDM_TRACK_DONE; /* waiting for next track. */ + break; + + case CDROM_AUDIO_INVALID: /**/ + default: + *mode = WM_CDM_UNKNOWN; + break; + } + } + + if(WM_CDS_NO_DISC(*mode)) { + /* verify status of drive */ + ret = ioctl(d->fd, CDROM_DRIVE_STATUS, 0/* slot */); + if(ret == CDS_DISC_OK) + ret = ioctl(d->fd, CDROM_DISC_STATUS, 0); + switch(ret) { + case CDS_NO_DISC: + *mode = WM_CDM_NO_DISC; + break; + case CDS_TRAY_OPEN: + *mode = WM_CDM_EJECTED; + break; + case CDS_AUDIO: + case CDS_MIXED: + *mode = WM_CDM_STOPPED; + break; + case CDS_DRIVE_NOT_READY: + case CDS_NO_INFO: + case CDS_DATA_1: + case CDS_DATA_2: + case CDS_XA_2_1: + case CDS_XA_2_2: + default: + *mode = WM_CDM_UNKNOWN; + } + } + + return (0); +} /* gen_get_drive_status */ + +/*-------------------------------------* + * Get the number of tracks on the CD. + *-------------------------------------*/ +int +gen_get_trackcount(struct wm_drive *d, int *tracks) +{ + struct cdrom_tochdr hdr; + + if (ioctl(d->fd, CDROMREADTOCHDR, &hdr)) + return (-1); + + *tracks = hdr.cdth_trk1; + return (0); +} /* gen_get_trackcount() */ + +/*---------------------------------------------------------* + * Get the start time and mode (data or audio) of a track. + *---------------------------------------------------------*/ +int +gen_get_trackinfo(struct wm_drive *d, int track, int *data, int *startframe) +{ + struct cdrom_tocentry entry; + + entry.cdte_track = track; + entry.cdte_format = CDROM_MSF; + + if (ioctl(d->fd, CDROMREADTOCENTRY, &entry)) + return (-1); + + *startframe = entry.cdte_addr.msf.minute * 60 * 75 + + entry.cdte_addr.msf.second * 75 + + entry.cdte_addr.msf.frame; + *data = entry.cdte_ctrl & CDROM_DATA_TRACK ? 1 : 0; + + return (0); +} + +/*-------------------------------------* + * Get the number of frames on the CD. + *-------------------------------------*/ +int +gen_get_cdlen(struct wm_drive *d, int *frames) +{ + int tmp; + + return gen_get_trackinfo( d, CDROM_LEADOUT, &tmp, frames); +} /* gen_get_cdlen() */ + + +/*------------------------------------------------------------* + * Play the CD from one position to another (both in frames.) + *------------------------------------------------------------*/ +int +gen_play(struct wm_drive *d, int start, int end, int realstart) +{ + struct cdrom_msf msf; + + CDDARETURN(d) cdda_play(d, start, end, realstart); + + msf.cdmsf_min0 = start / (60*75); + msf.cdmsf_sec0 = (start % (60*75)) / 75; + msf.cdmsf_frame0 = start % 75; + msf.cdmsf_min1 = end / (60*75); + msf.cdmsf_sec1 = (end % (60*75)) / 75; + msf.cdmsf_frame1 = end % 75; + + if (ioctl(d->fd, CDROMPLAYMSF, &msf)) { + if (ioctl(d->fd, CDROMSTART)) + return (-1); + if (ioctl(d->fd, CDROMPLAYMSF, &msf)) + return (-2); + } + + /* + * I hope no drive gets really confused after CDROMSTART + * If so, I need to make this run-time configurable. + * +#ifndef FAST_IDE + if (ioctl( d->fd, CDROMSTART)) + return (-1); +#endif + if (ioctl( d->fd, CDROMPLAYMSF, &msf )) + return (-2); + */ + + return (0); +} /* gen_play() */ + +/*---------------* + * Pause the CD. + *---------------*/ +int +gen_pause(struct wm_drive *d) +{ + CDDARETURN(d) cdda_pause(d); + return (ioctl(d->fd, CDROMPAUSE)); +} + +/*-------------------------------------------------* + * Resume playing the CD (assuming it was paused.) + *-------------------------------------------------*/ +int +gen_resume(struct wm_drive *d) +{ + CDDARETURN(d) cdda_pause(d); + return (ioctl(d->fd, CDROMRESUME)); +} + +/*--------------* + * Stop the CD. + *--------------*/ +int +gen_stop(struct wm_drive *d) +{ + CDDARETURN(d) cdda_stop(d); + return (ioctl(d->fd, CDROMSTOP)); +} + + +/*----------------------------------------* + * Eject the current CD, if there is one. + *----------------------------------------*/ +int +gen_eject(struct wm_drive *d) +{ + struct stat stbuf; +#if !defined(BSD_MOUNTTEST) + struct ustat ust; +#else + struct mntent *mnt; + FILE *fp; +#endif + + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "ejecting?\n"); + + if (fstat(d->fd, &stbuf) != 0) { + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "that weird fstat() thingy\n"); + return (-2); + } + + /* Is this a mounted filesystem? */ +#if !defined(BSD_MOUNTTEST) + if (ustat(stbuf.st_rdev, &ust) == 0) + return (-3); +#else + /* + * This is the same test as in the WorkBone interface. + * I should eliminate it there, because there is no need + * for it in the UI + */ + /* check if drive is mounted (from Mark Buckaway's cdplayer code) */ + /* Changed it again (look at XPLAYCD from ???? */ + /* It's better to check the device name rather than one device is */ + /* mounted as iso9660. That prevents "no playing" if you have more*/ + /* than one CD-ROM, and one of them is mounted, but it's not the */ + /* audio CD -dirk */ + if ((fp = setmntent (MOUNTED, "r")) == NULL) + { + wm_lib_message(WM_MSG_LEVEL_ERROR|WM_MSG_CLASS, "Could not open %s: %s\n", MOUNTED, strerror (errno)); + return(-3); + } + while ((mnt = getmntent (fp)) != NULL) + { + if (strcmp (mnt->mnt_fsname, d->cd_device) == 0) + { + wm_lib_message(WM_MSG_LEVEL_ERROR|WM_MSG_CLASS, "CDROM already mounted (according to mtab). Operation aborted.\n"); + endmntent (fp); + return(-3); + } + } + endmntent (fp); +#endif /* BSD_MOUNTTEST */ + + IFCDDA(d) { + cdda_eject(d); + } + + ioctl( d->fd, CDROM_LOCKDOOR, 0 ); + + if (ioctl(d->fd, CDROMEJECT)) + { + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "eject failed (%s).\n", strerror(errno)); + return (-1); + } + + /*------------------ + * Things in "foobar_one" are left over from 1.4b3 + * I put them here for further observation. In 1.4b3, however, + * that workaround didn't help at least for /dev/sbpcd + * (The tray closed just after ejecting because re-opening the + * device causes the tray to close) + *------------------*/ +#ifdef foobar_one + extern int intermittent_dev + /* + * Some drives (drivers?) won't recognize a new CD if we leave the + * device open. + */ + if (intermittent_dev) + gen_close(d); +#endif + + return (0); +} /* gen_eject() */ + +/*----------------------------------------* + * Close the CD tray + *----------------------------------------*/ + +int +gen_closetray(struct wm_drive *d) +{ +#ifdef CAN_CLOSE +#ifdef CDROMCLOSETRAY + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "CDROMCLOSETRAY closing tray...\n"); + if (ioctl(d->fd, CDROMCLOSETRAY)) + return (-1); +#else + wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_reopen() closing tray...\n"); + if(!gen_close(d)) + { + return(wmcd_reopen(d)); + } else { + return(-1); + } +#endif /* CDROMCLOSETRAY */ +#endif /* CAN_CLOSE */ + /* Always succeed if the drive can't close. */ + return(0); +} /* gen_closetray() */ + + +/*------------------------------------------------------------------------* + * scale_volume(vol, max) + * + * Return a volume value suitable for passing to the CD-ROM drive. "vol" + * is a volume slider setting; "max" is the slider's maximum value. + * This is not used if sound card support is enabled. + * + *------------------------------------------------------------------------*/ +static int +scale_volume( int vol, int max ) +{ +#ifdef CURVED_VOLUME + return ((max * max - (max - vol) * (max - vol)) * + (max_volume - min_volume) / (max * max) + min_volume); +#else + return ((vol * (max_volume - min_volume)) / max + min_volume); +#endif +} /* scale_volume() */ + +static int +unscale_volume( int vol, int max ) +{ +#ifdef CURVED_VOLUME + /* FIXME do it simpler */ + int tmp = (((max_volume - min_volume - vol) * max * max) - (vol + min_volume)); + return max - sqrt((tmp/(max_volume - min_volume))); +#else + return (((vol - min_volume) * max) / (max_volume - min_volume)); +#endif +} /* unscale_volume() */ + +/*---------------------------------------------------------------------* + * Set the volume level for the left and right channels. Their values + * range from 0 to 100. + *---------------------------------------------------------------------*/ +int +gen_set_volume( struct wm_drive *d, int left, int right ) +{ + struct cdrom_volctrl v; + + CDDARETURN(d) cdda_set_volume(d, left, right); + + /* Adjust the volume to make up for the CD-ROM drive's weirdness. */ + left = scale_volume(left, 100); + right = scale_volume(right, 100); + + v.channel0 = v.channel2 = left < 0 ? 0 : left > 255 ? 255 : left; + v.channel1 = v.channel3 = right < 0 ? 0 : right > 255 ? 255 : right; + + return (ioctl(d->fd, CDROMVOLCTRL, &v)); +} /* gen_set_volume() */ + +/*---------------------------------------------------------------------* + * Read the volume from the drive, if available. Each channel + * ranges from 0 to 100, with -1 indicating data not available. + *---------------------------------------------------------------------*/ +int +gen_get_volume( struct wm_drive *d, int *left, int *right ) +{ + struct cdrom_volctrl v; + + CDDARETURN(d) cdda_get_volume(d, left, right); + +#if defined(CDROMVOLREAD) + if(!ioctl(d->fd, CDROMVOLREAD, &v)) { + *left = unscale_volume((v.channel0 + v.channel2)/2, 100); + *right = unscale_volume((v.channel1 + v.channel3)/2, 100); + } else +#endif + /* Suns, HPs, Linux, NEWS can't read the volume; oh well */ + *left = *right = -1; + + return 0; +} /* gen_get_volume() */ + +/*------------------------------------------------------------------------* + * gen_get_cdtext(drive, buffer, lenght) + * + * Return a buffer with cdtext-stream. buffer will be allocated and filled + * + * needs send packet interface -> for IDE, linux at 2.2.16 + * depends on scsi.c which depends on wm_scsi defined in here + * (which also takes care of IDE drives) + *------------------------------------------------------------------------*/ + +int +gen_get_cdtext(struct wm_drive *d, unsigned char **pp_buffer, int *p_buffer_lenght) +{ + return wm_scsi_get_cdtext(d, pp_buffer, p_buffer_lenght); +} /* gen_get_cdtext() */ + +#endif /* __linux__ */ |