diff options
Diffstat (limited to 'sys/dev/sound/midi/sequencer.c')
| -rw-r--r-- | sys/dev/sound/midi/sequencer.c | 2601 |
1 files changed, 2601 insertions, 0 deletions
diff --git a/sys/dev/sound/midi/sequencer.c b/sys/dev/sound/midi/sequencer.c new file mode 100644 index 0000000..17c79ef --- /dev/null +++ b/sys/dev/sound/midi/sequencer.c @@ -0,0 +1,2601 @@ +/* + * The sequencer personality manager. + * + * Copyright by Hannu Savolainen 1993 + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. 2. + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + * + */ + +/* + * This is the newmidi sequencer driver. This driver handles io against + * /dev/sequencer, midi input and output event queues and event transmittion + * to and from a midi device or synthesizer. + */ + +#include <dev/sound/midi/midi.h> +#include <dev/sound/midi/sequencer.h> + +#define SND_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM + synthesizer and MIDI output) */ +#define SND_DEV_MIDIN 2 /* Raw midi access */ +#define SND_DEV_MUSIC 8 /* /dev/music, level 2 interface */ + +#define MIDIDEV_MODE 0x2000 + +/* Length of a sequencer event. */ +#define EV_SZ 8 +#define IEV_SZ 8 + +/* Lookup modes */ +#define LOOKUP_EXIST (0) +#define LOOKUP_OPEN (1) +#define LOOKUP_CLOSE (2) + +/* + * These functions goes into seq_op_desc to get called + * from sound.c. + */ + +static midi_intr_t seq_intr; +static midi_callback_t seq_callback; + +/* These are the entries to the sequencer driver. */ +static d_open_t seq_open; +static d_close_t seq_close; +static d_ioctl_t seq_ioctl; +static d_read_t seq_read; +static d_write_t seq_write; +static d_poll_t seq_poll; + +/* + * This is the device descriptor for the midi sequencer. + */ +seqdev_info seq_op_desc = { + "midi sequencer", + + 0, + + seq_open, + seq_close, + seq_read, + seq_write, + seq_ioctl, + seq_poll, + + seq_callback, + + SEQ_BUFFSIZE, /* Queue Length */ + + 0, /* XXX This is not an *audio* device! */ +}; + + +/* Here is the parameter structure per a device. */ +struct seq_softc { + seqdev_info *devinfo; /* sequencer device information */ + + /* Flags (protected by flag_mtx of mididev_info) */ + int fflags; /* Access mode */ + int queueout_pending; /* Pending for the output queue */ + int seq_mode; /* Sequencer mode */ + + /* Timer counters */ + u_long seq_time; /* The beggining time of this sequence */ + u_long prev_event_time; /* The time of the previous event output */ + u_long prev_input_time; /* The time of the previous event input */ + u_long prev_wakeup_time; /* The time of the previous wakeup */ + struct callout timeout_ch; /* Timer callout handler */ + long timer_current; /* Current timer value */ + int timer_running; /* State of timer */ + int pending_timer; /* Timer change operation */ + int pre_event_timeout; /* Time to wait event input */ + + /* Devices */ + TAILQ_HEAD(,_mididev_info) midi_open; /* Midi devices opened by this sequencer. */ + timerdev_info *timer; /* A timer device for /dev/music */ + + /* + * XXX not sure to which category these belong. + * (and some might be no-op) + */ + int output_threshould; /* Sequence output threshould */ + snd_sync_parm sync_parm; /* AIOSYNC parameter set */ + struct thread *sync_thread; /* AIOSYNCing thread */ +}; + +typedef struct seq_softc *sc_p; + +static d_open_t seqopen; +static d_close_t seqclose; +static d_ioctl_t seqioctl; +static d_read_t seqread; +static d_write_t seqwrite; +static d_poll_t seqpoll; + +#define CDEV_MAJOR SEQ_CDEV_MAJOR +static struct cdevsw seq_cdevsw = { + .d_open = seqopen, + .d_close = seqclose, + .d_read = seqread, + .d_write = seqwrite, + .d_ioctl = seqioctl, + .d_poll = seqpoll, + .d_name = "midi", /* XXX */ + .d_maj = CDEV_MAJOR, +}; + + +static TAILQ_HEAD(,_seqdev_info) seq_info; +/* Mutex to protect seq_info and nseq. */ +static struct mtx seqinfo_mtx; +/* total number of sequencers */ +static u_long nseq; +static dev_t seq_alias = NODEV; +static dev_t music_alias = NODEV; + +SYSCTL_NODE(_hw_midi, OID_AUTO, seq, CTLFLAG_RD, 0, "Midi sequencer"); + +int seq_debug; +SYSCTL_INT(_hw_midi_seq, OID_AUTO, debug, CTLFLAG_RW, &seq_debug, 0, ""); + +static midi_cmdtab cmdtab_seqevent[] = { + {SEQ_NOTEOFF, "SEQ_NOTEOFF"}, + {SEQ_NOTEON, "SEQ_NOTEON"}, + {SEQ_WAIT, "SEQ_WAIT"}, + {SEQ_PGMCHANGE, "SEQ_PGMCHANGE"}, + {SEQ_SYNCTIMER, "SEQ_SYNCTIMER"}, + {SEQ_MIDIPUTC, "SEQ_MIDIPUTC"}, + {SEQ_DRUMON, "SEQ_DRUMON"}, + {SEQ_DRUMOFF, "SEQ_DRUMOFF"}, + {SEQ_ECHO, "SEQ_ECHO"}, + {SEQ_AFTERTOUCH, "SEQ_AFTERTOUCH"}, + {SEQ_CONTROLLER, "SEQ_CONTROLLER"}, + {SEQ_BALANCE, "SEQ_BALANCE"}, + {SEQ_VOLMODE, "SEQ_VOLMODE"}, + {SEQ_FULLSIZE, "SEQ_FULLSIZE"}, + {SEQ_PRIVATE, "SEQ_PRIVATE"}, + {SEQ_EXTENDED, "SEQ_EXTENDED"}, + {EV_SEQ_LOCAL, "EV_SEQ_LOCAL"}, + {EV_TIMING, "EV_TIMING"}, + {EV_CHN_COMMON, "EV_CHN_COMMON"}, + {EV_CHN_VOICE, "EV_CHN_VOICE"}, + {EV_SYSEX, "EV_SYSEX"}, + {-1, NULL}, +}; + +midi_cmdtab cmdtab_seqioctl[] = { + {SNDCTL_SEQ_RESET, "SNDCTL_SEQ_RESET"}, + {SNDCTL_SEQ_SYNC, "SNDCTL_SEQ_SYNC"}, + {SNDCTL_SYNTH_INFO, "SNDCTL_SYNTH_INFO"}, + {SNDCTL_SEQ_CTRLRATE, "SNDCTL_SEQ_CTRLRATE"}, + {SNDCTL_SEQ_GETOUTCOUNT, "SNDCTL_SEQ_GETOUTCOUNT"}, + {SNDCTL_SEQ_GETINCOUNT, "SNDCTL_SEQ_GETINCOUNT"}, + {SNDCTL_SEQ_PERCMODE, "SNDCTL_SEQ_PERCMODE"}, + {SNDCTL_FM_LOAD_INSTR, "SNDCTL_FM_LOAD_INSTR"}, + {SNDCTL_SEQ_TESTMIDI, "SNDCTL_SEQ_TESTMIDI"}, + {SNDCTL_SEQ_RESETSAMPLES, "SNDCTL_SEQ_RESETSAMPLES"}, + {SNDCTL_SEQ_NRSYNTHS, "SNDCTL_SEQ_NRSYNTHS"}, + {SNDCTL_SEQ_NRMIDIS, "SNDCTL_SEQ_NRMIDIS"}, + {SNDCTL_MIDI_INFO, "SNDCTL_MIDI_INFO"}, + {SNDCTL_SEQ_THRESHOLD, "SNDCTL_SEQ_THRESHOLD"}, + {SNDCTL_SYNTH_MEMAVL, "SNDCTL_SYNTH_MEMAVL"}, + {SNDCTL_FM_4OP_ENABLE, "SNDCTL_FM_4OP_ENABLE"}, + {SNDCTL_PMGR_ACCESS, "SNDCTL_PMGR_ACCESS"}, + {SNDCTL_SEQ_PANIC, "SNDCTL_SEQ_PANIC"}, + {SNDCTL_SEQ_OUTOFBAND, "SNDCTL_SEQ_OUTOFBAND"}, + {SNDCTL_TMR_TIMEBASE, "SNDCTL_TMR_TIMEBASE"}, + {SNDCTL_TMR_START, "SNDCTL_TMR_START"}, + {SNDCTL_TMR_STOP, "SNDCTL_TMR_STOP"}, + {SNDCTL_TMR_CONTINUE, "SNDCTL_TMR_CONTINUE"}, + {SNDCTL_TMR_TEMPO, "SNDCTL_TMR_TEMPO"}, + {SNDCTL_TMR_SOURCE, "SNDCTL_TMR_SOURCE"}, + {SNDCTL_TMR_METRONOME, "SNDCTL_TMR_METRONOME"}, + {SNDCTL_TMR_SELECT, "SNDCTL_TMR_SELECT"}, + {SNDCTL_MIDI_PRETIME, "SNDCTL_MIDI_PRETIME"}, + {AIONWRITE, "AIONWRITE"}, + {AIOGSIZE, "AIOGSIZE"}, + {AIOSSIZE, "AIOSSIZE"}, + {AIOGFMT, "AIOGFMT"}, + {AIOSFMT, "AIOSFMT"}, + {AIOGMIX, "AIOGMIX"}, + {AIOSMIX, "AIOSMIX"}, + {AIOSTOP, "AIOSTOP"}, + {AIOSYNC, "AIOSYNC"}, + {AIOGCAP, "AIOGCAP"}, + {-1, NULL}, +}; + +midi_cmdtab cmdtab_timer[] = { + {TMR_WAIT_REL, "TMR_WAIT_REL"}, + {TMR_WAIT_ABS, "TMR_WAIT_ABS"}, + {TMR_STOP, "TMR_STOP"}, + {TMR_START, "TMR_START"}, + {TMR_CONTINUE, "TMR_CONTINUE"}, + {TMR_TEMPO, "TMR_TEMPO"}, + {TMR_ECHO, "TMR_ECHO"}, + {TMR_CLOCK, "TMR_CLOCK"}, + {TMR_SPP, "TMR_SPP"}, + {TMR_TIMESIG, "TMR_TIMESIG"}, + {-1, NULL}, +}; + +static midi_cmdtab cmdtab_seqcv[] = { + {MIDI_NOTEOFF, "MIDI_NOTEOFF"}, + {MIDI_NOTEON, "MIDI_NOTEON"}, + {MIDI_KEY_PRESSURE, "MIDI_KEY_PRESSURE"}, + {-1, NULL}, +}; + +static midi_cmdtab cmdtab_seqccmn[] = { + {MIDI_CTL_CHANGE, "MIDI_CTL_CHANGE"}, + {MIDI_PGM_CHANGE, "MIDI_PGM_CHANGE"}, + {MIDI_CHN_PRESSURE, "MIDI_CHN_PRESSURE"}, + {MIDI_PITCH_BEND, "MIDI_PITCH_BEND"}, + {MIDI_SYSTEM_PREFIX, "MIDI_SYSTEM_PREFIX"}, + {-1, NULL}, +}; + + +/* The followings are the local function. */ +static int seq_init(void); +static int seq_initunit(int unit); +static int seq_queue(sc_p scp, u_char *note); +static void seq_startplay(sc_p scp); +static int seq_playevent(sc_p scp, u_char *event); +static u_long seq_gettime(void); +static int seq_requesttimer(sc_p scp, int delay); +static void seq_stoptimer(sc_p scp); +static void seq_midiinput(sc_p scp, mididev_info *md); +static int seq_extended(sc_p scp, u_char *event); +static int seq_chnvoice(sc_p scp, u_char *event); +static int seq_findvoice(mididev_info *md, int chn, int note) __unused; +static int seq_allocvoice(sc_p scp, mididev_info *md, int chn, int note) __unused; +static int seq_chncommon(sc_p scp, u_char *event); +static int seq_timing(sc_p scp, u_char *event); +static int seq_local(sc_p scp, u_char *event); +static int seq_sysex(sc_p scp, u_char *event); +static int seq_reset(sc_p scp); +static int seq_openmidi(sc_p scp, mididev_info *md, int flags, int mode, struct thread *p); +static int seq_closemidi(sc_p scp, mididev_info *md, int flags, int mode, struct thread *p); +static void seq_panic(sc_p scp); +static int seq_sync(sc_p scp); + +static seqdev_info *get_seqdev_info(dev_t i_dev, int *unit); +static seqdev_info *get_seqdev_info_unit(int unit); +static seqdev_info *create_seqdev_info_unit(int unit, seqdev_info *seq); +static int lookup_mididev(sc_p scp, int unit, int mode, mididev_info **mdp); +static int lookup_mididev_midi(sc_p scp, int unit, int mode, mididev_info **mdp); +static void seq_clone(void *arg, char *name, int namelen, dev_t *dev); + +/* + * Here are the main functions to interact to the user process. + * These are called from snd* functions in sys/i386/isa/snd/sound.c. + */ + +static int +seq_init(void) +{ + SEQ_DEBUG(printf("seq: initing.\n")); + + mtx_init(&seqinfo_mtx, "seqinf", NULL, MTX_DEF); + TAILQ_INIT(&seq_info); + + seq_initunit(0); + EVENTHANDLER_REGISTER(dev_clone, seq_clone, 0, 1000); + + SEQ_DEBUG(printf("seq: inited.\n")); + + return (0); +} + +static int +seq_initunit(int unit) +{ + sc_p scp; + seqdev_info *devinfo; + dev_t seqdev, musicdev; + + /* Allocate the softc. */ + scp = malloc(sizeof(*scp), M_DEVBUF, M_WAITOK | M_ZERO); + if (scp == (sc_p)NULL) { + printf("seq_initunit: unit %d, softc allocation failed.\n", unit); + return (1); + } + + /* Fill the softc and the seq_info for this unit. */ + scp->seq_time = seq_gettime(); + scp->prev_event_time = 0; + scp->prev_input_time = 0; + scp->prev_wakeup_time = scp->seq_time; +#if defined(MIDI_OUTOFGIANT) + callout_init(&scp->timeout_ch, 1); +#else + callout_init(&scp->timeout_ch, 0); +#endif /* MIDI_OUTOFGIANT */ + scp->timer_current = 0; + scp->timer_running = 0; + scp->queueout_pending = 0; + TAILQ_INIT(&scp->midi_open); + scp->pending_timer = -1; + + scp->devinfo = devinfo = create_seqdev_info_unit(unit, &seq_op_desc); + devinfo->midi_dbuf_in.unit_size = devinfo->midi_dbuf_out.unit_size = EV_SZ; + devinfo->softc = scp; + devinfo->flags = 0; + mtx_unlock(&devinfo->flagqueue_mtx); + + seqdev = make_dev(&seq_cdevsw, MIDIMKMINOR(unit, SND_DEV_SEQ), + UID_ROOT, GID_WHEEL, 0666, "sequencer%d", unit); + musicdev = make_dev(&seq_cdevsw, MIDIMKMINOR(unit, SND_DEV_MUSIC), + UID_ROOT, GID_WHEEL, 0666, "music%d", unit); + + mtx_lock(&seqinfo_mtx); + if (seq_alias != NODEV) { + destroy_dev(seq_alias); + seq_alias = NODEV; + } + seq_alias = make_dev_alias(seqdev, "sequencer"); + if (music_alias != NODEV) { + destroy_dev(music_alias); + music_alias = NODEV; + } + music_alias = make_dev_alias(musicdev, "music"); + mtx_unlock(&seqinfo_mtx); + + if (timerdev_install() != 0) + printf("seq_initunit: timerdev_install failed.\n"); + + return (0); +} + +int +seq_open(dev_t i_dev, int flags, int mode, struct thread *td) +{ + int unit; + sc_p scp; + seqdev_info *sd; + + unit = MIDIUNIT(i_dev); + + SEQ_DEBUG(printf("seq_open: unit %d, flags 0x%x.\n", unit, flags)); + + if (unit >= NSEQ_MAX) { + SEQ_DEBUG(printf("seq_open: unit %d does not exist.\n", unit)); + return (ENXIO); + } + + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + SEQ_DEBUG(printf("seq_open: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + + /* Mark this device busy. */ + mtx_lock(&sd->flagqueue_mtx); + if ((sd->flags & SEQ_F_BUSY) != 0) { + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_open: unit %d is busy.\n", unit)); + return (EBUSY); + } + scp->fflags = flags; + sd->flags |= SEQ_F_BUSY; + sd->flags &= ~(SEQ_F_READING | SEQ_F_WRITING); + if ((scp->fflags & O_NONBLOCK) != 0) + sd->flags |= SEQ_F_NBIO; + scp->seq_mode = MIDIDEV(i_dev); + + /* Init the queue. */ + midibuf_clear(&sd->midi_dbuf_in); + midibuf_clear(&sd->midi_dbuf_out); + + /* Init timestamp. */ + scp->seq_time = seq_gettime(); + scp->prev_event_time = 0; + scp->prev_input_time = 0; + scp->prev_wakeup_time = scp->seq_time; + + if (scp->pending_timer != -1) { + scp->timer = get_timerdev_info_unit(scp->pending_timer); + scp->pending_timer = -1; + } + if (scp->timer == NULL) + scp->timer = get_timerdev_info(); + if (scp->timer != NULL) { + scp->timer->seq = scp; + mtx_unlock(&scp->timer->mtx); + } else if (scp->seq_mode == SND_DEV_MUSIC) { + mtx_unlock(&sd->flagqueue_mtx); + printf("seq_open: no timer available.\n"); + sd->flags &= ~SEQ_F_BUSY; + return (ENXIO); + } + + if (scp->seq_mode == SND_DEV_MUSIC) + scp->timer->open(scp->timer, flags, mode, td); + + /* Begin recording if nonblocking. */ + if ((sd->flags & (SEQ_F_READING | SEQ_F_NBIO)) == SEQ_F_NBIO && (scp->fflags & FREAD) != 0) + sd->callback(sd, SEQ_CB_START | SEQ_CB_RD); + + mtx_unlock(&sd->flagqueue_mtx); + + SEQ_DEBUG(printf("seq_open: opened, mode %d.\n", scp->seq_mode == SND_DEV_MUSIC ? 2 : 1)); + + return (0); +} + +int +seq_close(dev_t i_dev, int flags, int mode, struct thread *td) +{ + int unit; + sc_p scp; + seqdev_info *sd; + mididev_info *md; + timerdev_info *tmd; + + unit = MIDIUNIT(i_dev); + + SEQ_DEBUG(printf("seq_close: unit %d.\n", unit)); + + if (unit >= NSEQ_MAX) { + SEQ_DEBUG(printf("seq_close: unit %d does not exist.\n", unit)); + return (ENXIO); + } + + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + SEQ_DEBUG(printf("seq_close: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + + mtx_lock(&sd->flagqueue_mtx); + + if (!(sd->flags & MIDI_F_NBIO)) + seq_sync(scp); + + /* Stop the timer. */ + seq_stoptimer(scp); + + /* Reset the sequencer. */ + seq_reset(scp); + seq_sync(scp); + + /* Clean up the midi device. */ + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) + lookup_mididev(scp, md->unit, LOOKUP_CLOSE, NULL); + + /* Stop playing and unmark this device busy. */ + sd->flags &= ~(SEQ_F_BUSY | SEQ_F_READING | SEQ_F_WRITING | SEQ_F_INSYNC); + + if (scp->seq_mode == SND_DEV_MUSIC) + scp->timer->close(scp->timer, flags, mode, td); + + if (scp->timer != NULL) { + tmd = scp->timer; + mtx_lock(&tmd->mtx); + scp->timer = NULL; + tmd->seq = NULL; + mtx_unlock(&tmd->mtx); + } + + mtx_unlock(&sd->flagqueue_mtx); + + SEQ_DEBUG(printf("seq_close: closed.\n")); + + return (0); +} + +int +seq_read(dev_t i_dev, struct uio *buf, int flag) +{ + int unit, ret, len, lenr; + sc_p scp; + seqdev_info *sd; + u_char *uiobuf; + + unit = MIDIUNIT(i_dev); + + SEQ_DEBUG(printf("seq_read: unit %d, resid %d.\n", unit, buf->uio_resid)); + + if (unit >= NSEQ_MAX) { + SEQ_DEBUG(printf("seq_read: unit %d does not exist.\n", unit)); + return (ENXIO); + } + + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + SEQ_DEBUG(printf("seq_read: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + if ((scp->fflags & FREAD) == 0) { + SEQ_DEBUG(printf("seq_read: unit %d is not for reading.\n", unit)); + return (EIO); + } + + len = buf->uio_resid; + lenr = 0; + + uiobuf = (u_char *)malloc(len, M_DEVBUF, M_WAITOK | M_ZERO); + if (uiobuf == NULL) + return (ENOMEM); + + mtx_lock(&sd->flagqueue_mtx); + + /* Begin recording. */ + if ((sd->flags & SEQ_F_READING) == 0) + sd->callback(sd, SEQ_CB_START | SEQ_CB_RD); + + /* Have we got the data to read? */ + if ((sd->flags & SEQ_F_NBIO) != 0 && sd->midi_dbuf_in.rl == 0) + ret = EAGAIN; + else { + if ((sd->flags & SEQ_F_NBIO) != 0 && len > sd->midi_dbuf_in.rl) + len = sd->midi_dbuf_in.rl; + ret = midibuf_seqread(&sd->midi_dbuf_in, uiobuf, len, &lenr, + sd->callback, sd, SEQ_CB_START | SEQ_CB_RD, + &sd->flagqueue_mtx); + } + + mtx_unlock(&sd->flagqueue_mtx); + + if (ret == 0 && lenr > 0) + ret = uiomove(uiobuf, lenr, buf); + + free(uiobuf, M_DEVBUF); + + SEQ_DEBUG(printf("seq_read: ret %d, resid %d.\n", ret, buf->uio_resid)); + + return (ret); +} + +int +seq_write(dev_t i_dev, struct uio *buf, int flag) +{ + u_char event[EV_SZ], ev_code; + int unit, count, countorg, midiunit, ev_size, p, ret; + sc_p scp; + seqdev_info *sd; + mididev_info *md; + + unit = MIDIUNIT(i_dev); + + SEQ_DEBUG(printf("seq_write: unit %d, resid %d.\n", unit, buf->uio_resid)); + + if (unit >= NSEQ_MAX) { + SEQ_DEBUG(printf("seq_write: unit %d does not exist.\n", unit)); + return (ENXIO); + } + + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + SEQ_DEBUG(printf("seq_write: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + if ((scp->fflags & FWRITE) == 0) { + SEQ_DEBUG(printf("seq_write: unit %d is not for writing.\n", unit)); + return (EIO); + } + + p = 0; + countorg = buf->uio_resid; + count = countorg; + + /* Pick up an event. */ + while (count >= 4) { + if (uiomove((caddr_t)event, 4, buf)) + printf("seq_write: user memory mangled?\n"); + ev_code = event[0]; + SEQ_DEBUG(printf("seq_write: unit %d, event %s.\n", unit, midi_cmdname(ev_code, cmdtab_seqevent))); + + /* Have a look at the event code. */ + if (ev_code == SEQ_FULLSIZE) { + + /* A long event, these are the patches/samples for a synthesizer. */ + midiunit = *(u_short *)&event[2]; + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev(scp, midiunit, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + return (ret); + + SEQ_DEBUG(printf("seq_write: loading a patch to the unit %d.\n", midiunit)); + + ret = md->synth.loadpatch(md, *(short *)&event[0], buf, p + 4, count, 0); + return (ret); + } + + if (ev_code >= 128) { + + /* Some sort of an extended event. The size is eight bytes. */ + if (scp->seq_mode == SND_DEV_MUSIC && ev_code == SEQ_EXTENDED) { + printf("seq_write: invalid level two event %x.\n", ev_code); + return (EINVAL); + } + ev_size = 8; + + if (count < ev_size) { + /* No more data. Start playing now. */ + mtx_lock(&sd->flagqueue_mtx); + if ((sd->flags & SEQ_F_WRITING) == 0) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + mtx_unlock(&sd->flagqueue_mtx); + buf->uio_resid += 4; + + return (0); + } + if (uiomove((caddr_t)&event[4], 4, buf)) + printf("seq_write: user memory mangled?\n"); + } else { + + /* Not an extended event. The size is four bytes. */ + if (scp->seq_mode == SND_DEV_MUSIC) { + printf("seq_write: four byte event in level two mode.\n"); + return (EINVAL); + } + ev_size = 4; + } + if (ev_code == SEQ_MIDIPUTC) { + /* An event passed to the midi device itself. */ + midiunit = event[2]; + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev_midi(scp, midiunit, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + return (ret); + } + + SEQ_DEBUG(printf("seq_write: queueing event %s.\n", midi_cmdname(event[0], cmdtab_seqevent))); + /* Now we queue the event. */ + mtx_lock(&sd->flagqueue_mtx); + switch (seq_queue(scp, event)) { + case EAGAIN: + /* The queue is full. Start playing now. */ + if ((sd->flags & SEQ_F_WRITING) == 0) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + mtx_unlock(&sd->flagqueue_mtx); + buf->uio_resid = count; + SEQ_DEBUG(printf("seq_write: resid %d.\n", buf->uio_resid)); + if (count < countorg) + return (0); + return (EAGAIN); + case EINTR: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_write: resid %d.\n", buf->uio_resid)); + return (EINTR); + case ERESTART: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_write: resid %d.\n", buf->uio_resid)); + return (ERESTART); + } + mtx_unlock(&sd->flagqueue_mtx); + p += ev_size; + count -= ev_size; + } + + /* We have written every single data. Start playing now. */ + mtx_lock(&sd->flagqueue_mtx); + if ((sd->flags & SEQ_F_WRITING) == 0) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + mtx_unlock(&sd->flagqueue_mtx); + + SEQ_DEBUG(printf("seq_write: resid %d.\n", buf->uio_resid)); + + return (0); +} + +int +seq_ioctl(dev_t i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td) +{ + int unit, midiunit, ret, tmp; + sc_p scp; + seqdev_info *sd; + mididev_info *md; + struct synth_info *synthinfo; + struct midi_info *midiinfo; + struct patmgr_info *patinfo; + struct seq_event_rec *event; + struct snd_size *sndsize; + + unit = MIDIUNIT(i_dev); + + SEQ_DEBUG(printf("seq_ioctl: unit %d, cmd %s.\n", unit, midi_cmdname(cmd, cmdtab_seqioctl))); + + if (unit >= NSEQ_MAX) { + SEQ_DEBUG(printf("seq_ioctl: unit %d does not exist.\n", unit)); + return (ENXIO); + } + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + SEQ_DEBUG(printf("seq_ioctl: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + + ret = 0; + + switch (cmd) { + + /* + * we start with the new ioctl interface. + */ + case AIONWRITE: /* how many bytes can be written ? */ + mtx_lock(&sd->flagqueue_mtx); + *(int *)arg = sd->midi_dbuf_out.fl; + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: fl %d.\n", *(int *)arg)); + break; + + case AIOSSIZE: /* set the current blocksize */ + sndsize = (struct snd_size *)arg; + SEQ_DEBUG(printf("seq_ioctl: play %d, rec %d.\n", sndsize->play_size, sndsize->rec_size)); + mtx_lock(&sd->flagqueue_mtx); + if (sndsize->play_size <= sd->midi_dbuf_out.unit_size && sndsize->rec_size <= sd->midi_dbuf_in.unit_size) { + sd->midi_dbuf_out.blocksize = sd->midi_dbuf_out.unit_size; + sd->midi_dbuf_in.blocksize = sd->midi_dbuf_in.unit_size; + sndsize->play_size = sd->midi_dbuf_out.blocksize; + sndsize->rec_size = sd->midi_dbuf_in.blocksize; + sd->flags &= ~MIDI_F_HAS_SIZE; + mtx_unlock(&sd->flagqueue_mtx); + } + else { + if (sndsize->play_size > sd->midi_dbuf_out.bufsize / 4) + sndsize->play_size = sd->midi_dbuf_out.bufsize / 4; + if (sndsize->rec_size > sd->midi_dbuf_in.bufsize / 4) + sndsize->rec_size = sd->midi_dbuf_in.bufsize / 4; + /* Round up the size to the multiple of EV_SZ. */ + sd->midi_dbuf_out.blocksize = + ((sndsize->play_size + sd->midi_dbuf_out.unit_size - 1) + / sd->midi_dbuf_out.unit_size) * sd->midi_dbuf_out.unit_size; + sd->midi_dbuf_in.blocksize = + ((sndsize->rec_size + sd->midi_dbuf_in.unit_size - 1) + / sd->midi_dbuf_in.unit_size) * sd->midi_dbuf_in.unit_size; + sndsize->play_size = sd->midi_dbuf_out.blocksize; + sndsize->rec_size = sd->midi_dbuf_in.blocksize; + sd->flags |= MIDI_F_HAS_SIZE; + mtx_unlock(&sd->flagqueue_mtx); + } + + ret = 0; + break; + + case AIOGSIZE: /* get the current blocksize */ + sndsize = (struct snd_size *)arg; + mtx_lock(&sd->flagqueue_mtx); + sndsize->play_size = sd->midi_dbuf_out.blocksize; + sndsize->rec_size = sd->midi_dbuf_in.blocksize; + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: play %d, rec %d.\n", sndsize->play_size, sndsize->rec_size)); + + ret = 0; + break; + + case AIOSTOP: + if (*(int *)arg == AIOSYNC_PLAY) { + + /* Stop writing. */ + mtx_lock(&sd->flagqueue_mtx); + sd->callback(sd, SEQ_CB_ABORT | SEQ_CB_WR); + mtx_unlock(&sd->flagqueue_mtx); + + /* Pass the ioctl to the midi devices. */ + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) { + if ((md->flags & MIDI_F_WRITING) != 0) + midi_ioctl(MIDIMKDEV(major(i_dev), md->unit, SND_DEV_MIDIN), cmd, (caddr_t)arg, mode, td); + } + + mtx_lock(&sd->flagqueue_mtx); + *(int *)arg = sd->midi_dbuf_out.rl; + mtx_unlock(&sd->flagqueue_mtx); + } + else if (*(int *)arg == AIOSYNC_CAPTURE) { + + /* Stop reading. */ + mtx_lock(&sd->flagqueue_mtx); + sd->callback(sd, SEQ_CB_ABORT | SEQ_CB_RD); + mtx_unlock(&sd->flagqueue_mtx); + + /* Pass the ioctl to the midi devices. */ + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) { + if ((md->flags & MIDI_F_WRITING) != 0) + midi_ioctl(MIDIMKDEV(major(i_dev), md->unit, SND_DEV_MIDIN), cmd, (caddr_t)arg, mode, td); + } + + mtx_lock(&sd->flagqueue_mtx); + *(int *)arg = sd->midi_dbuf_in.rl; + mtx_unlock(&sd->flagqueue_mtx); + } + + ret = 0; + break; + + case AIOSYNC: + mtx_lock(&sd->flagqueue_mtx); + scp->sync_parm = *(snd_sync_parm *)arg; + mtx_unlock(&sd->flagqueue_mtx); + + /* XXX Should select(2) against us watch the blocksize, or sync_parm? */ + + ret = 0; + break; + + case FIONBIO: /* set/clear non-blocking i/o */ + mtx_lock(&sd->flagqueue_mtx); + if (*(int *)arg == 0) + sd->flags &= ~SEQ_F_NBIO ; + else + sd->flags |= SEQ_F_NBIO ; + mtx_unlock(&sd->flagqueue_mtx); + MIDI_DEBUG(printf("seq_ioctl: arg %d.\n", *(int *)arg)); + break ; + + case SNDCTL_TMR_TIMEBASE: + case SNDCTL_TMR_TEMPO: + case SNDCTL_TMR_START: + case SNDCTL_TMR_STOP: + case SNDCTL_TMR_CONTINUE: + case SNDCTL_TMR_METRONOME: + case SNDCTL_TMR_SOURCE: + mtx_lock(&sd->flagqueue_mtx); + if (scp->seq_mode != SND_DEV_MUSIC) { + ret = EINVAL; + mtx_unlock(&sd->flagqueue_mtx); + break; + } + mtx_unlock(&sd->flagqueue_mtx); + /* XXX We should adopt am sx to protect scp->timer */ + ret = scp->timer->ioctl(scp->timer, cmd, arg, mode, td); + break; + case SNDCTL_TMR_SELECT: + mtx_lock(&sd->flagqueue_mtx); + if (scp->seq_mode != SND_DEV_MUSIC) { + ret = EINVAL; + mtx_unlock(&sd->flagqueue_mtx); + break; + } + mtx_unlock(&sd->flagqueue_mtx); + scp->pending_timer = *(int *)arg; + mtx_lock(&sd->flagqueue_mtx); + if (scp->pending_timer < 0) { + scp->pending_timer = -1; + ret = EINVAL; + mtx_unlock(&sd->flagqueue_mtx); + break; + } + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: new timer %d.\n", *(int *)arg)); + ret = 0; + break; + case SNDCTL_SEQ_PANIC: + mtx_lock(&sd->flagqueue_mtx); + seq_panic(scp); + mtx_unlock(&sd->flagqueue_mtx); + ret = 0; + break; + case SNDCTL_SEQ_SYNC: + if (mode == O_RDONLY) { + ret = 0; + break; + } + mtx_lock(&scp->devinfo->flagqueue_mtx); + ret = seq_sync(scp); + mtx_unlock(&scp->devinfo->flagqueue_mtx); + break; + case SNDCTL_SEQ_RESET: + mtx_lock(&scp->devinfo->flagqueue_mtx); + seq_reset(scp); + mtx_unlock(&scp->devinfo->flagqueue_mtx); + ret = 0; + break; + case SNDCTL_SEQ_TESTMIDI: + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev_midi(scp, *(int *)arg, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + break; + case SNDCTL_SEQ_GETINCOUNT: + if (mode == O_WRONLY) + *(int *)arg = 0; + else { + mtx_lock(&sd->flagqueue_mtx); + *(int *)arg = sd->midi_dbuf_in.rl; + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: incount %d.\n", *(int *)arg)); + } + ret = 0; + break; + case SNDCTL_SEQ_GETOUTCOUNT: + if (mode == O_RDONLY) + *(int *)arg = 0; + else { + mtx_lock(&sd->flagqueue_mtx); + *(int *)arg = sd->midi_dbuf_out.fl; + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: outcount %d.\n", *(int *)arg)); + } + ret = 0; + break; + case SNDCTL_SEQ_CTRLRATE: + mtx_lock(&sd->flagqueue_mtx); + if (scp->seq_mode == SND_DEV_MUSIC) { + mtx_unlock(&sd->flagqueue_mtx); + ret = scp->timer->ioctl(scp->timer, cmd, arg, mode, td); + break; + } + mtx_unlock(&sd->flagqueue_mtx); + if (*(int *)arg != 0) { + ret = EINVAL; + break; + } + *(int *)arg = hz; + SEQ_DEBUG(printf("seq_ioctl: ctrlrate %d.\n", *(int *)arg)); + ret = 0; + break; + case SNDCTL_SEQ_RESETSAMPLES: + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + break; + ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg, SND_DEV_MIDIN), cmd, arg, mode, td); + break; + case SNDCTL_SEQ_NRSYNTHS: + mtx_lock(&sd->flagqueue_mtx); + if (scp->seq_mode == SND_DEV_MUSIC) + *(int *)arg = mididev_synth_number() + mididev_midi_number(); + else + *(int *)arg = mididev_synth_number(); + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: synths %d.\n", *(int *)arg)); + ret = 0; + break; + case SNDCTL_SEQ_NRMIDIS: + mtx_lock(&sd->flagqueue_mtx); + if (scp->seq_mode == SND_DEV_MUSIC) + *(int *)arg = 0; + else + *(int *)arg = mididev_midi_number(); + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: midis %d.\n", *(int *)arg)); + ret = 0; + break; + case SNDCTL_SYNTH_MEMAVL: + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + break; + ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg, SND_DEV_MIDIN), cmd, arg, mode, td); + break; + case SNDCTL_FM_4OP_ENABLE: + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev(scp, *(int *)arg, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + break; + ret = midi_ioctl(MIDIMKDEV(major(i_dev), *(int *)arg, SND_DEV_MIDIN), cmd, arg, mode, td); + break; + case SNDCTL_SYNTH_INFO: + synthinfo = (struct synth_info *)arg; + midiunit = synthinfo->device; + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev(scp, midiunit, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + break; + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, td); + break; + case SNDCTL_SEQ_OUTOFBAND: + event = (struct seq_event_rec *)arg; + mtx_lock(&sd->flagqueue_mtx); + ret = seq_playevent(scp, event->arr); + mtx_unlock(&sd->flagqueue_mtx); + break; + case SNDCTL_MIDI_INFO: + midiinfo = (struct midi_info *)arg; + midiunit = midiinfo->device; + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev_midi(scp, midiunit, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + break; + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, td); + break; + case SNDCTL_PMGR_IFACE: + patinfo = (struct patmgr_info *)arg; + midiunit = patinfo->device; + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev(scp, midiunit, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + break; + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, td); + break; + case SNDCTL_PMGR_ACCESS: + patinfo = (struct patmgr_info *)arg; + midiunit = patinfo->device; + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev(scp, midiunit, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + break; + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, td); + break; + case SNDCTL_SEQ_THRESHOLD: + mtx_lock(&sd->flagqueue_mtx); + RANGE(*(int *)arg, 1, sd->midi_dbuf_out.bufsize - 1); + scp->output_threshould = *(int *)arg; + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: threshold %d.\n", *(int *)arg)); + ret = 0; + break; + case SNDCTL_MIDI_PRETIME: + tmp = *(int *)arg; + if (tmp < 0) + tmp = 0; + mtx_lock(&sd->flagqueue_mtx); + scp->pre_event_timeout = (hz * tmp) / 10; + *(int *)arg = scp->pre_event_timeout; + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_ioctl: pretime %d.\n", *(int *)arg)); + ret = 0; + break; + default: + if ((scp->fflags & O_ACCMODE) == FREAD) { + ret = EIO; + break; + } + mtx_lock(&sd->flagqueue_mtx); + ret = lookup_mididev(scp, 0, LOOKUP_OPEN, &md); + mtx_unlock(&sd->flagqueue_mtx); + if (ret != 0) + break; + ret = midi_ioctl(MIDIMKDEV(major(i_dev), 0, SND_DEV_MIDIN), cmd, arg, mode, td); + break; + } + + return (ret); +} + +int +seq_poll(dev_t i_dev, int events, struct thread *td) +{ + int unit, ret, lim; + sc_p scp; + seqdev_info *sd; + + unit = MIDIUNIT(i_dev); + + SEQ_DEBUG(printf("seq_poll: unit %d.\n", unit)); + + if (unit >= NSEQ_MAX) { + SEQ_DEBUG(printf("seq_poll: unit %d does not exist.\n", unit)); + return (ENXIO); + } + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + SEQ_DEBUG(printf("seq_poll: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + + mtx_lock(&sd->flagqueue_mtx); + + ret = 0; + + /* Look up the apropriate queue and select it. */ + if ((events & (POLLOUT | POLLWRNORM)) != 0) { + /* Start playing. */ + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + + /* Find out the boundary. */ + if ((sd->flags & SEQ_F_HAS_SIZE) != 0) + lim = sd->midi_dbuf_out.blocksize; + else + lim = sd->midi_dbuf_out.unit_size; + if (sd->midi_dbuf_out.fl < lim) + /* No enough space, record select. */ + selrecord(td, &sd->midi_dbuf_out.sel); + else + /* We can write now. */ + ret |= events & (POLLOUT | POLLWRNORM); + } + if ((events & (POLLIN | POLLRDNORM)) != 0) { + /* Start recording. */ + sd->callback(sd, SEQ_CB_START | SEQ_CB_RD); + + /* Find out the boundary. */ + if ((sd->flags & SEQ_F_HAS_SIZE) != 0) + lim = sd->midi_dbuf_in.blocksize; + else + lim = sd->midi_dbuf_in.unit_size; + if (sd->midi_dbuf_in.rl < lim) + /* No data ready, record select. */ + selrecord(td, &sd->midi_dbuf_in.sel); + else + /* We can write now. */ + ret |= events & (POLLIN | POLLRDNORM); + } + + mtx_unlock(&sd->flagqueue_mtx); + + return (ret); +} + +static void +seq_intr(void *p, mididev_info *md) +{ + sc_p scp; + seqdev_info *sd; + + sd = (seqdev_info *)p; + scp = sd->softc; + + mtx_lock(&sd->flagqueue_mtx); + + /* Restart playing if we have the data to output. */ + if (scp->queueout_pending) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + /* Check the midi device if we are reading. */ + if ((sd->flags & SEQ_F_READING) != 0) + seq_midiinput(scp, md); + + mtx_unlock(&sd->flagqueue_mtx); +} + +static int +seq_callback(void *d, int reason) +{ + int unit; + sc_p scp; + seqdev_info *sd; + + sd = (seqdev_info *)d; + + SEQ_DEBUG(printf("seq_callback: reason 0x%x.\n", reason)); + + if (sd == NULL) { + SEQ_DEBUG(printf("seq_callback: device not configured.\n")); + return (ENXIO); + } + scp = sd->softc; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + switch (reason & SEQ_CB_REASON_MASK) { + case SEQ_CB_START: + if ((reason & SEQ_CB_RD) != 0 && (sd->flags & SEQ_F_READING) == 0) + /* Begin recording. */ + sd->flags |= SEQ_F_READING; + if ((reason & SEQ_CB_WR) != 0 && (sd->flags & SEQ_F_WRITING) == 0) + /* Start playing. */ + seq_startplay(scp); + break; + case SEQ_CB_STOP: + case SEQ_CB_ABORT: + if ((reason & SEQ_CB_RD) != 0 && (sd->flags & SEQ_F_READING) != 0) { + /* Stop recording. */ + sd->flags &= ~SEQ_F_READING; + scp->seq_time = seq_gettime(); + scp->prev_input_time = 0; + } + if ((reason & SEQ_CB_WR) != 0 && (sd->flags & SEQ_F_WRITING) != 0) { + /* Stop Playing. */ + sd->flags &= ~SEQ_F_WRITING; + scp->queueout_pending = 0; + scp->seq_time = seq_gettime(); + scp->prev_input_time = 0; + + /* Stop the timer. */ + seq_stoptimer(scp); + } + } + + return (0); +} + +/* + * The functions below here are the libraries for the above ones. + */ + +static int +seq_queue(sc_p scp, u_char *note) +{ + int unit, err, lenw; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + SEQ_DEBUG(printf("seq_queue: unit %d.\n", unit)); + + if ((sd->flags & SEQ_F_INSYNC) != 0) + cv_wait(&sd->insync_cv, &sd->flagqueue_mtx); + + if (sd->midi_dbuf_out.fl < EV_SZ) { + /* We have no space. Start playing if not yet. */ + if ((sd->flags & SEQ_F_WRITING) == 0) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + if ((sd->flags & SEQ_F_NBIO) != 0 && sd->midi_dbuf_out.fl < EV_SZ) + /* We would block. */ + return (EAGAIN); + } + + /* Write to the queue. */ + err = midibuf_seqwrite(&sd->midi_dbuf_out, note, EV_SZ, &lenw, + sd->callback, sd, SEQ_CB_START | SEQ_CB_WR, + &sd->flagqueue_mtx); + + if (err == 0) { + /* Start playing if we have some data in the queue. */ + if (sd->midi_dbuf_out.rl >= EV_SZ && ((sd->flags & SEQ_F_WRITING) == 0)) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + } + + return (err); +} + +static void +seq_startplay(sc_p scp) +{ + int unit, lenr; + u_char event[EV_SZ]; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + sd->flags |= SEQ_F_WRITING; + + /* Dequeue the events to play. */ + while (sd->midi_dbuf_out.rl >= EV_SZ) { + + midibuf_seqcopy(&sd->midi_dbuf_out, event, EV_SZ, &lenr, + NULL, NULL, 0, + &sd->flagqueue_mtx); + + switch (seq_playevent(scp, event)) { + case TIMERARMED: + midibuf_seqdelete(&sd->midi_dbuf_out, EV_SZ, &lenr, + NULL, NULL, 0, + &sd->flagqueue_mtx); + return; + case QUEUEFULL: + /* We cannot play any further. */ + return; + case MORE: + midibuf_seqdelete(&sd->midi_dbuf_out, EV_SZ, &lenr, + NULL, NULL, 0, + &sd->flagqueue_mtx); + break; + } + } + + /* Played every event in the queue. */ + sd->flags &= ~SEQ_F_WRITING; +} + +static int +seq_playevent(sc_p scp, u_char *event) +{ + int unit, ret, lenw; + long *delay; + seqdev_info *sd; + mididev_info *md; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + ret = lookup_mididev(scp, 0, LOOKUP_OPEN, &md); + if (ret != 0) + return (MORE); + + SEQ_DEBUG(printf("seq_playevent: unit %d, event %s.\n", sd->unit, midi_cmdname(event[0], cmdtab_seqevent))); + + switch(event[0]) { + case SEQ_NOTEOFF: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_playevent: chn %d, note %d, vel %d.\n", event[1], event[2], event[3])); + if (md->synth.killnote(md, event[1], 255, event[3]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + ret = QUEUEFULL; + break; + } + mtx_lock(&sd->flagqueue_mtx); + ret = MORE; + break; + case SEQ_NOTEON: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_playevent: chn %d, note %d, vel %d, aux %d.\n", event[1], event[2], event[3], event[4])); + if ((event[4] < 128 || event[4] == 255) && md->synth.startnote(md, event[1], event[2], event[3]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + ret = QUEUEFULL; + break; + } + mtx_lock(&sd->flagqueue_mtx); + ret = MORE; + break; + case SEQ_WAIT: + + /* Extract the delay. */ + delay = (long *)event; + *delay = (*delay >> 8) & 0xffffff; + SEQ_DEBUG(printf("seq_playevent: delay %ld.\n", *delay)); + if (*delay > 0) { + /* Arm the timer. */ + sd->flags |= SEQ_F_WRITING; + if (seq_requesttimer(scp, *delay)) { + ret = TIMERARMED; + break; + } + } + ret = MORE; + break; + case SEQ_PGMCHANGE: + SEQ_DEBUG(printf("seq_playevent: chn %d, instr %d.\n", event[1], event[2])); + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.setinstr(md, event[1], event[2]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + ret = QUEUEFULL; + break; + } + mtx_lock(&sd->flagqueue_mtx); + ret = MORE; + break; + case SEQ_SYNCTIMER: + /* Reset the timer. */ + scp->seq_time = seq_gettime(); + scp->prev_input_time = 0; + scp->prev_event_time = 0; + scp->prev_wakeup_time = scp->seq_time; + ret = MORE; + break; + case SEQ_MIDIPUTC: + SEQ_DEBUG(printf("seq_playevent: data 0x%02x, unit %d.\n", event[1], event[2])); + /* Pass through to the midi device. */ + ret = lookup_mididev_midi(scp, event[2], LOOKUP_OPEN, &md); + if (ret != 0) { + ret = MORE; + break; + } + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.writeraw(md, &event[1], sizeof(event[1]), &lenw, 1) == EAGAIN) + /* The queue was full. Try again later. */ + ret = QUEUEFULL; + else + ret = MORE; + mtx_lock(&sd->flagqueue_mtx); + break; + case SEQ_ECHO: + /* Echo this event back. */ + if (seq_copytoinput(scp, event, 4) == EAGAIN) { + ret = QUEUEFULL; + break; + } + ret = MORE; + break; + case SEQ_PRIVATE: + ret = lookup_mididev(scp, event[1], LOOKUP_OPEN, &md); + if (ret != 0) { + ret = MORE; + break; + } + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.hwcontrol(md, event) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + ret = QUEUEFULL; + break; + } + mtx_lock(&sd->flagqueue_mtx); + ret = MORE; + break; + case SEQ_EXTENDED: + ret = seq_extended(scp, event); + break; + case EV_CHN_VOICE: + ret = seq_chnvoice(scp, event); + break; + case EV_CHN_COMMON: + ret = seq_chncommon(scp, event); + break; + case EV_TIMING: + ret = seq_timing(scp, event); + break; + case EV_SEQ_LOCAL: + ret = seq_local(scp, event); + break; + case EV_SYSEX: + ret = seq_sysex(scp, event); + break; + default: + ret = MORE; + break; + } + + switch (ret) { + case QUEUEFULL: + SEQ_DEBUG(printf("seq_playevent: the queue is full.\n")); + /* The queue was full. Try again on the interrupt by the midi device. */ + sd->flags |= SEQ_F_WRITING; + scp->queueout_pending = 1; + break; + case TIMERARMED: + SEQ_DEBUG(printf("seq_playevent: armed timer.\n")); + sd->flags |= SEQ_F_WRITING; + /* FALLTHRU */ + case MORE: + scp->queueout_pending = 0; + break; + } + + return (ret); +} + +static u_long +seq_gettime(void) +{ + struct timeval timecopy; + + getmicrotime(&timecopy); + return timecopy.tv_usec / (1000000 / hz) + (u_long) timecopy.tv_sec * hz; +} + +static int +seq_requesttimer(sc_p scp, int delay) +{ + u_long cur_time, rel_base; + + SEQ_DEBUG(printf("seq_requesttimer: unit %d, delay %d.\n", scp->devinfo->unit, delay)); + + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + cur_time = seq_gettime(); + + scp->prev_event_time = delay; + if (delay < 0) + /* Request a new timer. */ + delay = -delay; + else { + rel_base = cur_time - scp->seq_time; + if (delay <= rel_base) { + seq_stoptimer(scp); + return 0; + } + delay -= rel_base; + } + +#if notdef + /* + * Compensate the delay of midi message transmission. + * XXX Do we have to consider the accumulation of errors + * less than 1/hz second? + */ + delay -= (cur_time - scp->prev_wakeup_time); + if (delay < 1) { + printf("sequencer: prev = %lu, cur = %lu, delay = %d, skip sleeping.\n", + scp->prev_wakeup_time, cur_time, delay); + seq_stoptimer(scp); + return 0; + } +#endif /* notdef */ + + callout_reset(&scp->timeout_ch, delay, seq_timer, (void *)scp); + scp->timer_running = 1; + + return 1; +} + +static void +seq_stoptimer(sc_p scp) +{ + SEQ_DEBUG(printf("seq_stoptimer: unit %d.\n", scp->devinfo->unit)); + + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + if (scp->timer_running) { + callout_stop(&scp->timeout_ch); + scp->timer_running = 0; + } +} + +static void +seq_midiinput(sc_p scp, mididev_info *md) +{ + int unit, midiunit, lenr; + u_long tstamp; + u_char event[4]; + seqdev_info *sd; + + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + sd = scp->devinfo; + unit = sd->unit; + + /* Can this midi device interrupt for input? */ + midiunit = md->midiunit; + if (lookup_mididev_midi(scp, midiunit, LOOKUP_EXIST, NULL) != 0) + return; + + if ((md->flags & MIDI_F_READING) != 0 && md->intrarg == sd) { + /* Read the input data. */ + mtx_unlock(&scp->devinfo->flagqueue_mtx); + while (md->synth.readraw(md, &event[1], sizeof(event[1]), &lenr, 1) == 0) { + mtx_lock(&scp->devinfo->flagqueue_mtx); + tstamp = seq_gettime() - scp->seq_time; + if (tstamp != scp->prev_input_time) { + /* Insert a wait between events. */ + tstamp = (tstamp << 8) | SEQ_WAIT; + seq_copytoinput(scp, (u_char *)&tstamp, 4); + scp->prev_input_time = tstamp; + } + bzero(event, sizeof(event)); + event[0] = SEQ_MIDIPUTC; + event[2] = midiunit; + event[3] = 0; + seq_copytoinput(scp, event, sizeof(event)); + mtx_unlock(&scp->devinfo->flagqueue_mtx); + } + mtx_lock(&scp->devinfo->flagqueue_mtx); + } +} + +int +seq_copytoinput(void *arg, u_char *event, int len) +{ + int ret, leni; + sc_p scp; + seqdev_info *sd; + + scp = arg; + sd = scp->devinfo; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + if (len != 4 && len != 8) + return (EINVAL); + if (scp->seq_mode == SND_DEV_MUSIC && len != 8) + return (EINVAL); + + ret = midibuf_input_intr(&sd->midi_dbuf_in, event, len, &leni); + if (ret == EAGAIN) + ret = 0; + + return (ret); +} + +static int +seq_extended(sc_p scp, u_char *event) +{ + int unit; + seqdev_info *sd; + mididev_info *md; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + if (lookup_mididev(scp, event[2], LOOKUP_OPEN, &md) != 0) + return (MORE); + + SEQ_DEBUG(printf("seq_extended: unit %d, event %s, midiunit %d.\n", unit, midi_cmdname(event[1], cmdtab_seqevent), event[2])); + + switch (event[1]) { + case SEQ_NOTEOFF: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_extended: chn %d, note %d, vel %d.\n", event[3], event[4], event[5])); + if (md->synth.killnote(md, event[3], event[4], event[5]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + case SEQ_NOTEON: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_extended: chn %d, note %d, vel %d.\n", event[3], event[4], event[5])); + if ((event[4] < 128 || event[4] == 255) && md->synth.startnote(md, event[3], event[4], event[5]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + case SEQ_PGMCHANGE: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_extended: chn %d, instr %d.\n", event[3], event[4])); + if (md->synth.setinstr(md, event[3], event[4]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + case SEQ_AFTERTOUCH: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_extended: chn %d, press %d.\n", event[3], event[4])); + if (md->synth.aftertouch(md, event[3], event[4]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + case SEQ_BALANCE: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_extended: chn %d, pan %d.\n", event[3], event[4])); + if (md->synth.panning(md, event[3], (char)event[4]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + case SEQ_CONTROLLER: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_extended: chn %d, ctrlnum %d, val %d.\n", event[3], event[4], *(short *)&event[5])); + if (md->synth.controller(md, event[3], event[4], *(short *)&event[5]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + case SEQ_VOLMODE: + mtx_unlock(&sd->flagqueue_mtx); + SEQ_DEBUG(printf("seq_extended: mode %d.\n", event[3])); + if (md->synth.volumemethod != NULL && md->synth.volumemethod(md, event[3]) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + } + + return (MORE); +} + +static int +seq_chnvoice(sc_p scp, u_char *event) +{ + int voice; + seqdev_info *sd; + mididev_info *md; + u_char dev, cmd, chn, note, parm; + + voice = -1; + dev = event[1]; + cmd = event[2]; + chn = event[3]; + note = event[4]; + parm = event[5]; + + sd = scp->devinfo; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + if (lookup_mididev(scp, dev, LOOKUP_OPEN, &md) != 0) + return (MORE); + + SEQ_DEBUG(printf("seq_chnvoice: unit %d, dev %d, cmd %s, chn %d, note %d, parm %d.\n", + sd->unit, + dev, + midi_cmdname(cmd, cmdtab_seqcv), + chn, + note, + parm)); + + if (scp->seq_mode == SND_DEV_MUSIC && md->synth.allocvoice != NULL) + voice = seq_allocvoice(scp, md, chn, note); + switch (cmd) { + case MIDI_NOTEON: + if (note < 128 || note == 255) { + if (voice == -1 && scp->seq_mode == SND_DEV_MUSIC && md->synth.allocvoice) + /* This is an internal synthesizer. (FM, GUS, etc) */ + if ((voice = seq_allocvoice(scp, md, chn, note)) == EAGAIN) + return (QUEUEFULL); + if (voice == -1) + voice = chn; + + if (scp->seq_mode == SND_DEV_MUSIC && chn == 9) { + /* This channel is a percussion. The note number is the patch number. */ + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.setinstr(md, voice, 128 + note) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + + note = 60; /* Middle C. */ + } + if (scp->seq_mode == SND_DEV_MUSIC) { + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.setupvoice(md, voice, chn) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.startnote(md, voice, note, parm) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + break; + case MIDI_NOTEOFF: + if (voice == -1) + voice = chn; + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.killnote(md, voice, note, parm) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + case MIDI_KEY_PRESSURE: + if (voice == -1) + voice = chn; + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.aftertouch(md, voice, parm) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + break; + } + + return (MORE); +} + +static int +seq_findvoice(mididev_info *md, int chn, int note) +{ + int i; + u_short key; + + key = (chn << 8) | (note + 1); + + mtx_lock(&md->synth.vc_mtx); + for (i = 0 ; i < md->synth.alloc.max_voice ; i++) + if (md->synth.alloc.map[i] == key) { + mtx_unlock(&md->synth.vc_mtx); + return (i); + } + mtx_unlock(&md->synth.vc_mtx); + + return (-1); +} + +static int +seq_allocvoice(sc_p scp, mididev_info *md, int chn, int note) +{ + int voice; + u_short key; + + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + key = (chn << 8) | (note + 1); + + mtx_unlock(&scp->devinfo->flagqueue_mtx); + if ((voice = md->synth.allocvoice(md, chn, note, &md->synth.alloc)) == EAGAIN) { + mtx_lock(&scp->devinfo->flagqueue_mtx); + return (EAGAIN); + } + mtx_lock(&scp->devinfo->flagqueue_mtx); + + mtx_lock(&md->synth.vc_mtx); + md->synth.alloc.map[voice] = key; + md->synth.alloc.alloc_times[voice] = md->synth.alloc.timestamp++; + mtx_unlock(&md->synth.vc_mtx); + + return (voice); +} + +static int +seq_chncommon(sc_p scp, u_char *event) +{ + int unit, i, val, key; + u_short w14; + u_char dev, cmd, chn, p1; + seqdev_info *sd; + mididev_info *md; + + dev = event[1]; + cmd = event[2]; + chn = event[3]; + p1 = event[4]; + w14 = *(u_short *)&event[6]; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + if (lookup_mididev(scp, dev, LOOKUP_OPEN, &md) != 0) + return (MORE); + + SEQ_DEBUG(printf("seq_chnvoice: unit %d, dev %d, cmd %s, chn %d, p1 %d, w14 %d.\n", + sd->unit, + dev, + midi_cmdname(cmd, cmdtab_seqccmn), + chn, + p1, + w14)); + + switch (cmd) { + case MIDI_PGM_CHANGE: + if (scp->seq_mode == SND_DEV_MUSIC) { + mtx_lock(&md->synth.vc_mtx); + md->synth.chn_info[chn].pgm_num = p1; + mtx_unlock(&md->synth.vc_mtx); + mtx_unlock(&sd->flagqueue_mtx); + if (md->midiunit >= 0) { + if (md->synth.setinstr(md, chn, p1) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + } + mtx_lock(&sd->flagqueue_mtx); + } else { + /* For Mode 1. */ + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.setinstr(md, chn, p1) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + break; + case MIDI_CTL_CHANGE: + /* mtx_lock(&md->giant); */ + if (scp->seq_mode == SND_DEV_MUSIC) { + if (chn < 16 && p1 < 128) { + mtx_lock(&md->synth.vc_mtx); + md->synth.chn_info[chn].controllers[p1] = w14 & 0x7f; + if (p1 < 32) + /* We have set the MSB, clear the LSB. */ + md->synth.chn_info[chn].controllers[p1 + 32] = 0; + if (md->midiunit >= 0) { + val = w14 & 0x7f; + if (p1 < 64) { + /* Combine the MSB and the LSB. */ + val = ((md->synth.chn_info[chn].controllers[p1 & ~32] & 0x7f) << 7) + | (md->synth.chn_info[chn].controllers[p1 | 32] & 0x7f); + p1 &= ~32; + } + /* Handle all of the notes playing on this channel. */ + key = ((int)chn << 8); + for (i = 0 ; i < md->synth.alloc.max_voice ; i++) + if ((md->synth.alloc.map[i] & 0xff00) == key) { + mtx_unlock(&md->synth.vc_mtx); + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.controller(md, i, p1, val) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + mtx_lock(&md->synth.vc_mtx); + } + mtx_unlock(&md->synth.vc_mtx); + } else { + mtx_unlock(&md->synth.vc_mtx); + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.controller(md, chn, p1, w14) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + } + } else { + /* For Mode 1. */ + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.controller(md, chn, p1, w14) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + break; + case MIDI_PITCH_BEND: + if (scp->seq_mode == SND_DEV_MUSIC) { + mtx_lock(&md->synth.vc_mtx); + md->synth.chn_info[chn].bender_value = w14; + if (md->midiunit >= 0) { + /* Handle all of the notes playing on this channel. */ + key = ((int)chn << 8); + for (i = 0 ; i < md->synth.alloc.max_voice ; i++) + if ((md->synth.alloc.map[i] & 0xff00) == key) { + mtx_unlock(&md->synth.vc_mtx); + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.bender(md, i, w14) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + } else { + mtx_unlock(&md->synth.vc_mtx); + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.bender(md, chn, w14) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + } else { + /* For Mode 1. */ + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.bender(md, chn, w14) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + break; + } + + return (MORE); +} + +static int +seq_timing(sc_p scp, u_char *event) +{ + int unit, ret; + long parm; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + parm = *(long *)&event[4]; + + if (scp->seq_mode == SND_DEV_MUSIC) { + ret = scp->timer->event(scp->timer, event); + if (ret == TIMERARMED) + sd->flags |= SEQ_F_WRITING; + return (ret); + } + + SEQ_DEBUG(printf("seq_timing: unit %d, cmd %s, parm %lu.\n", + unit, midi_cmdname(event[1], cmdtab_timer), parm)); + + ret = MORE; + switch (event[1]) { + case TMR_WAIT_REL: + parm += scp->prev_event_time; + /* FALLTHRU */ + case TMR_WAIT_ABS: + if (parm > 0) { + sd->flags |= SEQ_F_WRITING; + if (seq_requesttimer(scp, parm)) + ret = TIMERARMED; + } + break; + case TMR_START: + scp->seq_time = seq_gettime(); + scp->prev_input_time = 0; + scp->prev_event_time = 0; + scp->prev_wakeup_time = scp->seq_time; + break; + case TMR_STOP: + break; + case TMR_CONTINUE: + break; + case TMR_TEMPO: + break; + case TMR_ECHO: + if (scp->seq_mode == SND_DEV_MUSIC) + seq_copytoinput(scp, event, 8); + else { + parm = (parm << 8 | SEQ_ECHO); + seq_copytoinput(scp, (u_char *)&parm, 4); + } + break; + } + + SEQ_DEBUG(printf("seq_timing: timer %s.\n", + ret == TIMERARMED ? "armed" : "not armed")); + + return (ret); +} + +static int +seq_local(sc_p scp, u_char *event) +{ + int unit; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + switch (event[1]) { + case LOCL_STARTAUDIO: +#if notyet + DMAbuf_start_devices(*(u_int *)&event[4]); +#endif /* notyet */ + break; + } + + return (MORE); +} + +static int +seq_sysex(sc_p scp, u_char *event) +{ + int unit, i, l; + seqdev_info *sd; + mididev_info *md; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + if (lookup_mididev(scp, event[1], LOOKUP_OPEN, &md) != 0) + return (MORE); + + l = 0; + for (i = 0 ; i < 6 && event[i + 2] != 0xff ; i++) + l = i + 1; + if (l > 0) { + mtx_unlock(&sd->flagqueue_mtx); + if (md->synth.sendsysex(md, &event[2], l) == EAGAIN) { + mtx_lock(&sd->flagqueue_mtx); + return (QUEUEFULL); + } + mtx_lock(&sd->flagqueue_mtx); + } + + return (MORE); +} + +void +seq_timer(void *arg) +{ + sc_p scp; + seqdev_info *sd; + + scp = arg; + sd = scp->devinfo; + + SEQ_DEBUG(printf("seq_timer: unit %d, timer fired.\n", sd->unit)); + + /* Record the current timestamp. */ + mtx_lock(&sd->flagqueue_mtx); + + scp->timer_running = 0; + scp->prev_wakeup_time = seq_gettime(); + seq_startplay(scp); + + mtx_unlock(&sd->flagqueue_mtx); +} + +static int +seq_openmidi(sc_p scp, mididev_info *md, int flags, int mode, struct thread *td) +{ + int midiunit, err, insync, chn; + + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + midiunit = md->unit; + + SEQ_DEBUG(printf("seq_openmidi: opening midi unit %d.\n", midiunit)); + + err = midi_open(MIDIMKDEV(MIDI_CDEV_MAJOR, midiunit, SND_DEV_MIDIN), flags, mode, td); + if (err != 0) { + printf("seq_openmidi: failed to open midi device %d.\n", midiunit); + return (err); + } + mtx_lock(&md->synth.status_mtx); + mtx_lock(&md->flagqueue_mtx); + md->intr = seq_intr; + md->intrarg = scp->devinfo; + mtx_unlock(&md->flagqueue_mtx); + md->synth.sysex_state = 0; + if (scp->seq_mode == SND_DEV_MUSIC) { + for (chn = 0 ; chn < 16 ; chn++) { + md->synth.chn_info[chn].pgm_num = 0; + md->synth.reset(md); + md->synth.chn_info[chn].bender_value = (1 << 7); + } + } + mtx_unlock(&md->synth.status_mtx); + + insync = 0; + if ((scp->devinfo->flags & SEQ_F_INSYNC) != 0) { + insync = 1; + cv_wait(&scp->devinfo->insync_cv, &scp->devinfo->flagqueue_mtx); + } + + TAILQ_INSERT_TAIL(&scp->midi_open, md, md_linkseq); + + if (insync) + cv_broadcast(&scp->devinfo->insync_cv); + + return (0); +} + +static int +seq_closemidi(sc_p scp, mididev_info *md, int flags, int mode, struct thread *td) +{ + int midiunit, insync; + + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + if (md == NULL || !MIDICONFED(md)) { + SEQ_DEBUG(printf("seq_closemidi: midi device does not exist.\n")); + return (ENXIO); + } + midiunit = md->unit; + + SEQ_DEBUG(printf("seq_closemidi: closing midi unit %d.\n", midiunit)); + + midi_close(MIDIMKDEV(MIDI_CDEV_MAJOR, midiunit, SND_DEV_MIDIN), flags, mode, td); + mtx_lock(&md->flagqueue_mtx); + md->intr = NULL; + md->intrarg = NULL; + mtx_unlock(&md->flagqueue_mtx); + + insync = 0; + if ((scp->devinfo->flags & SEQ_F_INSYNC) != 0) { + insync = 1; + cv_wait(&scp->devinfo->insync_cv, &scp->devinfo->flagqueue_mtx); + } + + TAILQ_REMOVE(&scp->midi_open, md, md_linkseq); + + if (insync) + cv_broadcast(&scp->devinfo->insync_cv); + + return (0); +} + +static void +seq_panic(sc_p scp) +{ + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + seq_reset(scp); +} + +static int +seq_reset(sc_p scp) +{ + int unit, chn, lenw, ret; + seqdev_info *sd; + mididev_info *md; + u_char c[3]; + + sd = scp->devinfo; + unit = sd->unit; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + SEQ_DEBUG(printf("seq_reset: unit %d.\n", unit)); + + if ((sd->flags & SEQ_F_INSYNC) != 0) + cv_wait(&sd->insync_cv, &sd->flagqueue_mtx); + + /* Stop reading and writing. */ + sd->callback(sd, SEQ_CB_ABORT | SEQ_CB_RD | SEQ_CB_WR); + + /* Clear the queues. */ + midibuf_clear(&sd->midi_dbuf_in); + midibuf_clear(&sd->midi_dbuf_out); + + /* Reset the synthesizers. */ + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) + md->synth.reset(md); + + if (scp->seq_mode == SND_DEV_MUSIC) { + for (chn = 0 ; chn < 16 ; chn++) { + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) { + mtx_unlock(&sd->flagqueue_mtx); + ret = 0; + if (md->synth.controller(md, chn, 123, 0) == EAGAIN /* All notes off. */ + || md->synth.controller(md, chn, 121, 0) == EAGAIN /* Reset all controllers. */ + || md->synth.bender(md, chn, 1 << 13) == EAGAIN) /* Reset pitch bend. */ + ret = EAGAIN; + mtx_lock(&sd->flagqueue_mtx); + return (ret); + } + } + } else { + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) { + for (chn = 0 ; chn < 16 ; chn++) { + mtx_unlock(&sd->flagqueue_mtx); + c[0] = 0xb0 | (chn & 0x0f); + c[1] = (u_char)0x78; /* All sound off */ + c[2] = (u_char)0; + md->synth.writeraw(md, c, 3, &lenw, 0); + c[1] = (u_char)0x7b; /* All note off */ + md->synth.writeraw(md, c, 3, &lenw, 0); + c[1] = (u_char)0x79; /* Reset all controller */ + md->synth.writeraw(md, c, 3, &lenw, 0); + mtx_lock(&sd->flagqueue_mtx); + } + } + seq_sync(scp); + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) + lookup_mididev(scp, md->unit, LOOKUP_CLOSE, NULL); + } + + return (0); +} + +#define SEQ_SYNC_TIMEOUT 8 +static int +seq_sync(sc_p scp) +{ + int i, rl; + seqdev_info *sd; + mididev_info *md; + + sd = scp->devinfo; + + mtx_assert(&sd->flagqueue_mtx, MA_OWNED); + + SEQ_DEBUG(printf("seq_sync: unit %d.\n", sd->unit)); + sd->flags |= SEQ_F_INSYNC; + + while (sd->midi_dbuf_out.rl >= EV_SZ) { + if ((sd->flags & SEQ_F_WRITING) == 0) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + rl = sd->midi_dbuf_out.rl; + i = cv_timedwait_sig(&sd->midi_dbuf_out.cv_out, &sd->flagqueue_mtx, SEQ_SYNC_TIMEOUT * hz); + if (i == EINTR || i == ERESTART) { + if (i == EINTR) + sd->callback(sd, SEQ_CB_STOP | SEQ_CB_WR); + sd->flags &= ~SEQ_F_INSYNC; + return (i); + } + if (i == EWOULDBLOCK && rl == sd->midi_dbuf_out.rl && !scp->timer_running) { + /* A queue seems to be stuck up. Give up and clear queues. */ + sd->callback(sd, SEQ_CB_STOP | SEQ_CB_WR); + midibuf_clear(&sd->midi_dbuf_out); + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) { + mtx_lock(&md->flagqueue_mtx); + md->callback(md, MIDI_CB_ABORT | MIDI_CB_WR); + midibuf_clear(&md->midi_dbuf_out); + mtx_unlock(&md->flagqueue_mtx); + } + break; + } + } + + /* + * Since syncing a midi device might block, unlock sd->flagqueue_mtx. + * Keep sd->midi_dbuf_out from writing by setting SEQ_F_INSYNC. + * sd->insync_cv is signalled when sync is finished. + */ + mtx_unlock(&sd->flagqueue_mtx); + + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) { + mtx_lock(&md->flagqueue_mtx); + midi_sync(md); + mtx_unlock(&md->flagqueue_mtx); + } + + mtx_lock(&sd->flagqueue_mtx); + sd->flags &= ~SEQ_F_INSYNC; + cv_broadcast(&sd->insync_cv); + + return (0); +} + +/* + * a small utility function which, given a device number, returns + * a pointer to the associated seqdev_info struct, and sets the unit + * number. + */ +static seqdev_info * +get_seqdev_info(dev_t i_dev, int *unit) +{ + int u; + + if (MIDIDEV(i_dev) != SND_DEV_SEQ && MIDIDEV(i_dev) != SND_DEV_MUSIC) + return NULL; + u = MIDIUNIT(i_dev); + if (unit) + *unit = u ; + + return get_seqdev_info_unit(u); +} + +/* + * a small utility function which, given a unit number, returns + * a pointer to the associated mididev_info struct. + */ +seqdev_info * +get_seqdev_info_unit(int unit) +{ + seqdev_info *sd; + + mtx_lock(&seqinfo_mtx); + TAILQ_FOREACH(sd, &seq_info, sd_link) { + if (sd->unit == unit) + break; + } + mtx_unlock(&seqinfo_mtx); + + return sd; +} + +/* Create a new sequencer device info structure. */ +seqdev_info * +create_seqdev_info_unit(int unit, seqdev_info *seq) +{ + seqdev_info *sd, *sdnew; + + /* As malloc(9) might block, allocate seqdev_info now. */ + sdnew = malloc(sizeof(seqdev_info), M_DEVBUF, M_WAITOK | M_ZERO); + if (sdnew == NULL) + return NULL; + bcopy(seq, sdnew, sizeof(seqdev_info)); + sdnew->unit = unit; + midibuf_init(&sdnew->midi_dbuf_in); + midibuf_init(&sdnew->midi_dbuf_out); + mtx_init(&sdnew->flagqueue_mtx, "seqflq", NULL, MTX_DEF); + cv_init(&sdnew->insync_cv, "seqins"); + + mtx_lock(&seqinfo_mtx); + + TAILQ_FOREACH(sd, &seq_info, sd_link) { + if (sd->unit == unit) { + mtx_unlock(&seqinfo_mtx); + midibuf_destroy(&sdnew->midi_dbuf_in); + midibuf_destroy(&sdnew->midi_dbuf_out); + mtx_destroy(&sdnew->flagqueue_mtx); + cv_destroy(&sdnew->insync_cv); + free(sdnew, M_DEVBUF); + return sd; + } + } + + mtx_lock(&sdnew->flagqueue_mtx); + TAILQ_INSERT_TAIL(&seq_info, sdnew, sd_link); + nseq++; + + mtx_unlock(&seqinfo_mtx); + + return sdnew; +} + +/* + * Look up a midi device by its unit number opened by this sequencer. + * If the device is not opened and mode is LOOKUP_OPEN, open the device. + */ +static int +lookup_mididev(sc_p scp, int unit, int mode, mididev_info **mdp) +{ + int ret; + mididev_info *md; + + if (mdp == NULL) + mdp = &md; + + *mdp = NULL; + + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) { + if (scp->seq_mode == SND_DEV_MUSIC ? md->unit == unit : md->synthunit == unit) { + *mdp = md; + if (mode == LOOKUP_CLOSE) + return seq_closemidi(scp, md, scp->fflags, MIDIDEV_MODE, curthread); + + return (md != NULL && MIDICONFED(md)) ? 0 : ENXIO; + } + } + + if (mode == LOOKUP_OPEN) { + if (scp->seq_mode == SND_DEV_MUSIC) + md = get_mididev_info_unit(unit); + else + md = get_mididev_synth_unit(unit); + if (md != NULL) { + *mdp = md; + ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curthread); + return ret; + } + } + + return ENXIO; +} + +/* + * Look up a midi device by its midi unit number opened by this sequencer. + * If the device is not opened and mode is LOOKUP_OPEN, open the device. + */ +static int +lookup_mididev_midi(sc_p scp, int unit, int mode, mididev_info **mdp) +{ + int ret; + mididev_info *md; + + if (mdp == NULL) + mdp = &md; + + *mdp = NULL; + + if (scp->seq_mode == SND_DEV_MUSIC) + return (ENXIO); + + mtx_assert(&scp->devinfo->flagqueue_mtx, MA_OWNED); + + TAILQ_FOREACH(md, &scp->midi_open, md_linkseq) { + if (md->midiunit == unit) { + *mdp = md; + if (mode == LOOKUP_CLOSE) + return seq_closemidi(scp, md, scp->fflags, MIDIDEV_MODE, curthread); + + return (md != NULL && MIDICONFED(md)) ? 0 : ENXIO; + } + } + + if (mode == LOOKUP_OPEN) { + md = get_mididev_midi_unit(unit); + if (md != NULL) { + *mdp = md; + ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curthread); + return ret; + } + } + + return ENXIO; +} + +/* XXX These functions are actually redundant. */ +static int +seqopen(dev_t i_dev, int flags, int mode, struct thread *td) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + case MIDI_DEV_MUSIC: + return seq_open(i_dev, flags, mode, td); + } + + return (ENXIO); +} + +static int +seqclose(dev_t i_dev, int flags, int mode, struct thread *td) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + case MIDI_DEV_MUSIC: + return seq_close(i_dev, flags, mode, td); + } + + return (ENXIO); +} + +static int +seqread(dev_t i_dev, struct uio * buf, int flag) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + case MIDI_DEV_MUSIC: + return seq_read(i_dev, buf, flag); + } + + return (ENXIO); +} + +static int +seqwrite(dev_t i_dev, struct uio * buf, int flag) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + case MIDI_DEV_MUSIC: + return seq_write(i_dev, buf, flag); + } + + return (ENXIO); +} + +static int +seqioctl(dev_t i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + case MIDI_DEV_MUSIC: + return seq_ioctl(i_dev, cmd, arg, mode, td); + } + + return (ENXIO); +} + +static int +seqpoll(dev_t i_dev, int events, struct thread *td) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + case MIDI_DEV_MUSIC: + return seq_poll(i_dev, events, td); + } + + return (ENXIO); +} + +static int +seq_modevent(module_t mod, int type, void *data) +{ + int retval; + + retval = 0; + + switch (type) { + case MOD_LOAD: + seq_init(); + break; + + case MOD_UNLOAD: + printf("sequencer: unload not supported yet.\n"); + retval = EOPNOTSUPP; + break; + + default: + break; + } + + return retval; +} + +DEV_MODULE(seq, seq_modevent, NULL); + +static void +seq_clone(arg, name, namelen, dev) + void *arg; + char *name; + int namelen; + dev_t *dev; +{ + int u; + + if (*dev != NODEV) + return; + if (bcmp(name, "sequencer", 9) != 0) + return; + if (name[10] != '\0' && name[11] != '\0') + return; + u = name[9] - '0'; + if (name[10] != '\0') { + u *= 10; + u += name[10] - '0'; + } + seq_initunit(u); + *dev = MIDIMKDEV(SEQ_CDEV_MAJOR, u, MIDI_DEV_SEQ); + return; +} |
