diff options
Diffstat (limited to 'sys/dev/sound/midi')
| -rw-r--r-- | sys/dev/sound/midi/midi.c | 702 | ||||
| -rw-r--r-- | sys/dev/sound/midi/midi.h | 294 | ||||
| -rw-r--r-- | sys/dev/sound/midi/midibuf.c | 424 | ||||
| -rw-r--r-- | sys/dev/sound/midi/midibuf.h | 64 | ||||
| -rw-r--r-- | sys/dev/sound/midi/midisynth.c | 632 | ||||
| -rw-r--r-- | sys/dev/sound/midi/midisynth.h | 97 | ||||
| -rw-r--r-- | sys/dev/sound/midi/miditypes.h | 34 | ||||
| -rw-r--r-- | sys/dev/sound/midi/sequencer.c | 2040 | ||||
| -rw-r--r-- | sys/dev/sound/midi/sequencer.h | 234 |
9 files changed, 4521 insertions, 0 deletions
diff --git a/sys/dev/sound/midi/midi.c b/sys/dev/sound/midi/midi.c new file mode 100644 index 0000000..83152cf --- /dev/null +++ b/sys/dev/sound/midi/midi.c @@ -0,0 +1,702 @@ +/* + * Main midi driver for FreeBSD. This file provides the main + * entry points for probe/attach and all i/o demultiplexing, including + * default routines for generic devices. + * + * (C) 1999 Seigo Tanimura + * + * 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. + * + * + * For each card type a template "mididev_info" structure contains + * all the relevant parameters, both for configuration and runtime. + * + * In this file we build tables of pointers to the descriptors for + * the various supported cards. The generic probe routine scans + * the table(s) looking for a matching entry, then invokes the + * board-specific probe routine. If successful, a pointer to the + * correct mididev_info is stored in mididev_last_probed, for subsequent + * use in the attach routine. The generic attach routine copies + * the template to a permanent descriptor (midi_info[unit] and + * friends), initializes all generic parameters, and calls the + * board-specific attach routine. + * + * On device calls, the generic routines do the checks on unit and + * device parameters, then call the board-specific routines if + * available, or try to perform the task using the default code. + * + * $FreeBSD$ + * + */ + +#include "opt_devfs.h" + +#include <dev/sound/midi/midi.h> + +static devclass_t midi_devclass; + +static d_open_t midiopen; +static d_close_t midiclose; +static d_ioctl_t midiioctl; +static d_read_t midiread; +static d_write_t midiwrite; +static d_poll_t midipoll; + +/* These functions are local. */ +static d_open_t midistat_open; +static d_close_t midistat_close; +static d_read_t midistat_read; +static int midi_initstatus(char *buf, int size); +static int midi_readstatus(char *buf, int *ptr, struct uio *uio); + +#define CDEV_MAJOR MIDI_CDEV_MAJOR +static struct cdevsw midi_cdevsw = { + /* open */ midiopen, + /* close */ midiclose, + /* read */ midiread, + /* write */ midiwrite, + /* ioctl */ midiioctl, + /* poll */ midipoll, + /* mmap */ nommap, + /* strategy */ nostrategy, + /* name */ "midi", + /* maj */ CDEV_MAJOR, + /* dump */ nodump, + /* psize */ nopsize, + /* flags */ 0, + /* bmaj */ -1 +}; + +/* + * descriptors for active devices. also used as the public softc + * of a device. + */ +mididev_info midi_info[NMIDI_MAX]; + +u_long nmidi; /* total number of midi devices, filled in by the driver */ +u_long nsynth; /* total number of synthesizers, filled in by the driver */ + +/* These make the buffer for /dev/midistat */ +static int midistatbusy; +static char midistatbuf[4096]; +static int midistatptr; + +/* + * This is the generic init routine + */ +int +midiinit(mididev_info *d, device_t dev) +{ + int unit; + + if (midi_devclass == NULL) { + midi_devclass = device_get_devclass(dev); + make_dev(&midi_cdevsw, MIDIMKMINOR(0, MIDI_DEV_STATUS), + UID_ROOT, GID_WHEEL, 0444, "midistat"); + } + + unit = device_get_unit(dev); + make_dev(&midi_cdevsw, MIDIMKMINOR(unit, MIDI_DEV_MIDIN), + UID_ROOT, GID_WHEEL, 0666, "midi%d", unit); + + /* + * initialize standard parameters for the device. This can be + * overridden by device-specific configurations but better do + * here the generic things. + */ + + d->unit = device_get_unit(dev); + d->softc = device_get_softc(dev); + d->dev = dev; + d->magic = MAGIC(d->unit); /* debugging... */ + + return 0 ; +} + +/* + * a small utility function which, given a device number, returns + * a pointer to the associated mididev_info struct, and sets the unit + * number. + */ +mididev_info * +get_mididev_info(dev_t i_dev, int *unit) +{ + int u; + mididev_info *d = NULL; + + if (MIDIDEV(i_dev) != MIDI_DEV_MIDIN) + return NULL; + u = MIDIUNIT(i_dev); + if (unit) + *unit = u; + + if (u >= nmidi + nsynth) { + DEB(printf("get_mididev_info: unit %d is not configured.\n", u)); + return NULL; + } + d = &midi_info[u]; + + return d; +} + +/* + * here are the switches for the main functions. The switches do + * all necessary checks on the device number to make sure + * that the device is configured. They also provide some default + * functionalities so that device-specific drivers have to deal + * only with special cases. + */ + +static int +midiopen(dev_t i_dev, int flags, int mode, struct proc * p) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_MIDIN: + return midi_open(i_dev, flags, mode, p); + case MIDI_DEV_STATUS: + return midistat_open(i_dev, flags, mode, p); + } + + return (ENXIO); +} + +static int +midiclose(dev_t i_dev, int flags, int mode, struct proc * p) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_MIDIN: + return midi_close(i_dev, flags, mode, p); + case MIDI_DEV_STATUS: + return midistat_close(i_dev, flags, mode, p); + } + + return (ENXIO); +} + +static int +midiread(dev_t i_dev, struct uio * buf, int flag) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_MIDIN: + return midi_read(i_dev, buf, flag); + case MIDI_DEV_STATUS: + return midistat_read(i_dev, buf, flag); + } + + return (ENXIO); +} + +static int +midiwrite(dev_t i_dev, struct uio * buf, int flag) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_MIDIN: + return midi_write(i_dev, buf, flag); + } + + return (ENXIO); +} + +static int +midiioctl(dev_t i_dev, u_long cmd, caddr_t arg, int mode, struct proc * p) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_MIDIN: + return midi_ioctl(i_dev, cmd, arg, mode, p); + } + + return (ENXIO); +} + +static int +midipoll(dev_t i_dev, int events, struct proc * p) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_MIDIN: + return midi_poll(i_dev, events, p); + } + + return (ENXIO); +} + +/* + * Followings are the generic methods in midi drivers. + */ + +int +midi_open(dev_t i_dev, int flags, int mode, struct proc * p) +{ + int dev, unit, s, ret; + mididev_info *d; + + dev = minor(i_dev); + d = get_mididev_info(i_dev, &unit); + + DEB(printf("open midi%d subdev %d flags 0x%08x mode 0x%08x\n", + unit, dev & 0xf, flags, mode)); + + if (d == NULL) + return (ENXIO); + + s = splmidi(); + + /* Mark this device busy. */ + device_busy(d->dev); + if ((d->flags & MIDI_F_BUSY) != 0) { + splx(s); + DEB(printf("opl_open: unit %d is busy.\n", unit)); + return (EBUSY); + } + d->flags |= MIDI_F_BUSY; + d->flags &= ~(MIDI_F_READING | MIDI_F_WRITING); + d->fflags = flags; + + /* Init the queue. */ + if ((d->fflags & FREAD) != 0) + midibuf_init(&d->midi_dbuf_in); + if ((d->fflags & FWRITE) != 0) { + midibuf_init(&d->midi_dbuf_out); + midibuf_init(&d->midi_dbuf_passthru); + } + + if (d->open == NULL) + ret = 0; + else + ret = d->open(i_dev, flags, mode, p); + + splx(s); + + return (ret); +} + +int +midi_close(dev_t i_dev, int flags, int mode, struct proc * p) +{ + int dev, unit, s, ret; + mididev_info *d; + + dev = minor(i_dev); + d = get_mididev_info(i_dev, &unit); + + DEB(printf("close midi%d subdev %d\n", unit, dev & 0xf)); + + if (d == NULL) + return (ENXIO); + + s = splmidi(); + + /* Clear the queues. */ + if ((d->fflags & FREAD) != 0) + midibuf_init(&d->midi_dbuf_in); + if ((d->fflags & FWRITE) != 0) { + midibuf_init(&d->midi_dbuf_out); + midibuf_init(&d->midi_dbuf_passthru); + } + + /* Stop playing and unmark this device busy. */ + d->flags &= ~MIDI_F_BUSY; + d->fflags = 0; + + device_unbusy(d->dev); + + if (d->close == NULL) + ret = 0; + else + ret = d->close(i_dev, flags, mode, p); + + splx(s); + + return (ret); +} + +int +midi_read(dev_t i_dev, struct uio * buf, int flag) +{ + int dev, unit, s, len, ret; + mididev_info *d ; + + dev = minor(i_dev); + + d = get_mididev_info(i_dev, &unit); + DEB(printf("read midi%d subdev %d flag 0x%08x\n", unit, dev & 0xf, flag)); + + if (d == NULL) + return (ENXIO); + + ret = 0; + s = splmidi(); + + /* Begin recording. */ + d->callback(d, MIDI_CB_START | MIDI_CB_RD); + + /* Have we got the data to read? */ + if ((d->flags & MIDI_F_NBIO) != 0 && d->midi_dbuf_in.rl == 0) + ret = EAGAIN; + else { + len = buf->uio_resid; + ret = midibuf_uioread(&d->midi_dbuf_in, buf, len); + if (ret < 0) + ret = -ret; + else + ret = 0; + } + + if (ret == 0 && d->read != NULL) + ret = d->read(i_dev, buf, flag); + + splx(s); + + return (ret); +} + +int +midi_write(dev_t i_dev, struct uio * buf, int flag) +{ + int dev, unit, s, len, ret; + mididev_info *d; + + dev = minor(i_dev); + d = get_mididev_info(i_dev, &unit); + + DEB(printf("write midi%d subdev %d flag 0x%08x\n", unit, dev & 0xf, flag)); + + if (d == NULL) + return (ENXIO); + + ret = 0; + s = splmidi(); + + /* Begin playing. */ + d->callback(d, MIDI_CB_START | MIDI_CB_WR); + + /* Have we got the data to write? */ + if ((d->flags & MIDI_F_NBIO) != 0 && d->midi_dbuf_out.fl == 0) + ret = EAGAIN; + else { + len = buf->uio_resid; + if (len > d->midi_dbuf_out.fl && + (d->flags & MIDI_F_NBIO)) + len = d->midi_dbuf_out.fl; + ret = midibuf_uiowrite(&d->midi_dbuf_out, buf, len); + if (ret < 0) + ret = -ret; + else + ret = 0; + } + + /* Begin playing. */ + d->callback(d, MIDI_CB_START | MIDI_CB_WR); + + if (ret == 0 && d->write != NULL) + ret = d->write(i_dev, buf, flag); + + splx(s); + + return (ret); +} + +/* + * generic midi ioctl. Functions of the default driver can be + * overridden by the device-specific ioctl call. + * If a device-specific call returns ENOSYS (Function not implemented), + * the default driver is called. Otherwise, the returned value + * is passed up. + * + * The default handler, for many parameters, sets the value in the + * descriptor, sets MIDI_F_INIT, and calls the callback function with + * reason INIT. If successful, the callback returns 1 and the caller + * can update the parameter. + */ + +int +midi_ioctl(dev_t i_dev, u_long cmd, caddr_t arg, int mode, struct proc * p) +{ + int ret = ENOSYS, dev, unit; + mididev_info *d; + struct snd_size *sndsize; + u_long s; + + dev = minor(i_dev); + d = get_mididev_info(i_dev, &unit); + + if (d == NULL) + return (ENXIO); + + if (d->ioctl) + ret = d->ioctl(i_dev, cmd, arg, mode, p); + if (ret != ENOSYS) + return ret; + + /* + * pass control to the default ioctl handler. Set ret to 0 now. + */ + ret = 0; + + /* + * all routines are called with int. blocked. Make sure that + * ints are re-enabled when calling slow or blocking functions! + */ + s = splmidi(); + switch(cmd) { + + /* + * we start with the new ioctl interface. + */ + case AIONWRITE: /* how many bytes can write ? */ + *(int *)arg = d->midi_dbuf_out.fl; + break; + + case AIOSSIZE: /* set the current blocksize */ + sndsize = (struct snd_size *)arg; + if (sndsize->play_size <= d->midi_dbuf_out.unit_size && sndsize->rec_size <= d->midi_dbuf_in.unit_size) { + d->flags &= ~MIDI_F_HAS_SIZE; + d->midi_dbuf_out.blocksize = d->midi_dbuf_out.unit_size; + d->midi_dbuf_in.blocksize = d->midi_dbuf_in.unit_size; + } + else { + if (sndsize->play_size > d->midi_dbuf_out.bufsize / 4) + sndsize->play_size = d->midi_dbuf_out.bufsize / 4; + if (sndsize->rec_size > d->midi_dbuf_in.bufsize / 4) + sndsize->rec_size = d->midi_dbuf_in.bufsize / 4; + /* Round up the size to the multiple of EV_SZ. */ + d->midi_dbuf_out.blocksize = + ((sndsize->play_size + d->midi_dbuf_out.unit_size - 1) + / d->midi_dbuf_out.unit_size) * d->midi_dbuf_out.unit_size; + d->midi_dbuf_in.blocksize = + ((sndsize->rec_size + d->midi_dbuf_in.unit_size - 1) + / d->midi_dbuf_in.unit_size) * d->midi_dbuf_in.unit_size; + d->flags |= MIDI_F_HAS_SIZE; + } + /* FALLTHROUGH */ + case AIOGSIZE: /* get the current blocksize */ + sndsize = (struct snd_size *)arg; + sndsize->play_size = d->midi_dbuf_out.blocksize; + sndsize->rec_size = d->midi_dbuf_in.blocksize; + + ret = 0; + break; + + case AIOSTOP: + if (*(int *)arg == AIOSYNC_PLAY) /* play */ + *(int *)arg = d->callback(d, MIDI_CB_STOP | MIDI_CB_WR); + else if (*(int *)arg == AIOSYNC_CAPTURE) + *(int *)arg = d->callback(d, MIDI_CB_STOP | MIDI_CB_RD); + else { + splx(s); + DEB(printf("AIOSTOP: bad channel 0x%x\n", *(int *)arg)); + *(int *)arg = 0 ; + } + break ; + + case AIOSYNC: + DEB(printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", + ((snd_sync_parm *)arg)->chan, + ((snd_sync_parm *)arg)->pos)); + break; + /* + * here follow the standard ioctls (filio.h etc.) + */ + case FIONREAD: /* get # bytes to read */ + *(int *)arg = d->midi_dbuf_in.rl; + break; + + case FIOASYNC: /*set/clear async i/o */ + DEB( printf("FIOASYNC\n") ; ) + break; + + case FIONBIO: /* set/clear non-blocking i/o */ + if ( *(int *)arg == 0 ) + d->flags &= ~MIDI_F_NBIO ; + else + d->flags |= MIDI_F_NBIO ; + break ; + + case MIOSPASSTHRU: /* set/clear passthru */ + if ( *(int *)arg == 0 ) + d->flags &= ~MIDI_F_PASSTHRU ; + else + d->flags |= MIDI_F_PASSTHRU ; + + /* Init the queue. */ + midibuf_init(&d->midi_dbuf_passthru); + + /* FALLTHROUGH */ + case MIOGPASSTHRU: /* get passthru */ + if ((d->flags & MIDI_F_PASSTHRU) != 0) + (int *)arg = 1; + else + (int *)arg = 0; + break ; + + default: + DEB(printf("default ioctl midi%d subdev %d fn 0x%08x fail\n", + unit, dev & 0xf, cmd)); + ret = EINVAL; + break ; + } + splx(s); + return ret ; +} + +int +midi_poll(dev_t i_dev, int events, struct proc * p) +{ + int unit, dev, ret, s, lim; + mididev_info *d; + + dev = minor(i_dev); + d = get_mididev_info(i_dev, &unit); + + if (d == NULL) + return (ENXIO); + + if (d->poll) + ret = d->poll(i_dev, events, p); + + ret = 0; + s = splmidi(); + + /* Look up the apropriate queue and select it. */ + if ((events & (POLLOUT | POLLWRNORM)) != 0) { + /* Start playing. */ + d->callback(d, MIDI_CB_START | MIDI_CB_WR); + + /* Find out the boundary. */ + if ((d->flags & MIDI_F_HAS_SIZE) != 0) + lim = d->midi_dbuf_out.blocksize; + else + lim = d->midi_dbuf_out.unit_size; + if (d->midi_dbuf_out.fl < lim) + /* No enough space, record select. */ + selrecord(p, &d->midi_dbuf_out.sel); + else + /* We can write now. */ + ret |= events & (POLLOUT | POLLWRNORM); + } + if ((events & (POLLIN | POLLRDNORM)) != 0) { + /* Start recording. */ + d->callback(d, MIDI_CB_START | MIDI_CB_RD); + + /* Find out the boundary. */ + if ((d->flags & MIDI_F_HAS_SIZE) != 0) + lim = d->midi_dbuf_in.blocksize; + else + lim = d->midi_dbuf_in.unit_size; + if (d->midi_dbuf_in.rl < lim) + /* No data ready, record select. */ + selrecord(p, &d->midi_dbuf_in.sel); + else + /* We can write now. */ + ret |= events & (POLLIN | POLLRDNORM); + } + splx(s); + + return (ret); +} + +void +midi_intr(mididev_info *d) +{ + if (d->intr != NULL) + d->intr(d->intrarg, d); +} + +/* + * These handle the status message of the midi drivers. + */ + +int +midistat_open(dev_t i_dev, int flags, int mode, struct proc * p) +{ + if (midistatbusy) + return (EBUSY); + + bzero(midistatbuf, sizeof(midistatbuf)); + midistatptr = 0; + if (midi_initstatus(midistatbuf, sizeof(midistatbuf) - 1)) + return (ENOMEM); + + midistatbusy = 1; + + return (0); +} + +int +midistat_close(dev_t i_dev, int flags, int mode, struct proc * p) +{ + midistatbusy = 0; + + return (0); +} + +int +midistat_read(dev_t i_dev, struct uio * buf, int flag) +{ + return midi_readstatus(midistatbuf, &midistatptr, buf); +} + +/* + * finally, some "libraries" + */ + +/* Inits the buffer for /dev/midistat. */ +static int +midi_initstatus(char *buf, int size) +{ + int i, p; + device_t dev; + mididev_info *md; + + p = 0; + p += snprintf(buf, size, "FreeBSD Midi Driver (newmidi) %s %s\nInstalled devices:\n", __DATE__, __TIME__); + for (i = 0 ; i < NMIDI_MAX ; i++) { + md = &midi_info[i]; + if (!MIDICONFED(md)) + continue; + dev = devclass_get_device(midi_devclass, i); + if (p < size) + p += snprintf(&buf[p], size - p, "midi%d: <%s> %s\n", i, device_get_desc(dev), md->midistat); + else + return (1); + } + + return (0); +} + +/* Reads the status message. */ +static int +midi_readstatus(char *buf, int *ptr, struct uio *uio) +{ + int s, len; + + s = splmidi(); + len = min(uio->uio_resid, strlen(&buf[*ptr])); + if (len > 0) { + uiomove(&buf[*ptr], len, uio); + *ptr += len; + } + splx(s); + + return (0); +} diff --git a/sys/dev/sound/midi/midi.h b/sys/dev/sound/midi/midi.h new file mode 100644 index 0000000..2e36ed0 --- /dev/null +++ b/sys/dev/sound/midi/midi.h @@ -0,0 +1,294 @@ +/* + * Include file for midi driver. + * + * Copyright by Seigo Tanimura 1999. + * + * 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. + * + * $FreeBSD$ + * + */ + +/* + * first, include kernel header files. + */ + +#ifndef _MIDI_H_ +#define _MIDI_H_ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/ioccom.h> + +#include <sys/filio.h> +#include <sys/sockio.h> +#include <sys/fcntl.h> +#include <sys/tty.h> +#include <sys/proc.h> + +#include <sys/kernel.h> /* for DATA_SET */ + +#include <sys/module.h> +#include <sys/conf.h> +#include <sys/file.h> +#include <sys/uio.h> +#include <sys/syslog.h> +#include <sys/errno.h> +#include <sys/malloc.h> +#include <sys/bus.h> +#include <machine/clock.h> /* for DELAY */ +#include <machine/resource.h> +#include <machine/bus_memio.h> +#include <machine/bus_pio.h> +#include <machine/bus.h> +#include <machine/clock.h> /* for DELAY */ +#include <sys/soundcard.h> +#include <sys/rman.h> +#include <sys/mman.h> +#include <sys/poll.h> + +#include <dev/sound/midi/miditypes.h> +#include <dev/sound/midi/midibuf.h> +#include <dev/sound/midi/midisynth.h> + +#define MIDI_CDEV_MAJOR 30 + +/* + * descriptor of midi operations ... + * + */ + +struct _mididev_info { + + /* + * the first part of the descriptor is filled up from a + * template. + */ + char name[64]; + + int type; + + d_open_t *open; + d_close_t *close; + d_read_t *read; + d_write_t *write; + d_ioctl_t *ioctl; + d_poll_t *poll; + midi_callback_t *callback; + + /* + * combinations of the following flags are used as second argument in + * the callback from the dma module to the device-specific routines. + */ + +#define MIDI_CB_RD 0x100 /* read callback */ +#define MIDI_CB_WR 0x200 /* write callback */ +#define MIDI_CB_REASON_MASK 0xff +#define MIDI_CB_START 0x01 /* start dma op */ +#define MIDI_CB_STOP 0x03 /* stop dma op */ +#define MIDI_CB_ABORT 0x04 /* abort dma op */ +#define MIDI_CB_INIT 0x05 /* init board parameters */ + + /* + * callback extensions + */ +#define MIDI_CB_DMADONE 0x10 +#define MIDI_CB_DMAUPDATE 0x11 +#define MIDI_CB_DMASTOP 0x12 + + /* init can only be called with int enabled and + * no pending DMA activity. + */ + + /* + * whereas from here, parameters are set at runtime. + * resources are stored in the softc of the device, + * not in the common structure. + */ + + int unit; /* unit number of the device */ + void *softc; /* softc for the device */ + device_t dev; /* device_t for the device */ + + int bd_id ; /* used to hold board-id info, eg. sb version, + * mss codec type, etc. etc. + */ + + midi_dbuf midi_dbuf_in; /* midi input event/message queue */ + midi_dbuf midi_dbuf_out; /* midi output event/message queue */ + midi_dbuf midi_dbuf_passthru; /* midi passthru event/message queue */ + + /* + * these parameters describe the operation of the board. + * Generic things like busy flag, speed, etc are here. + */ + + volatile u_long flags ; /* 32 bits, used for various purposes. */ + int fflags; /* file flag */ + + /* + * we have separate flags for read and write, although in some + * cases this is probably not necessary (e.g. because we cannot + * know how many processes are using the device, we cannot + * distinguish if open, close, abort are for a write or for a + * read). + */ + + /* + * the following flag is used by open-close routines + * to mark the status of the device. + */ +#define MIDI_F_BUSY 0x0001 /* has been opened */ + /* + * the next two are used to allow only one pending operation of + * each type. + */ +#define MIDI_F_READING 0x0004 /* have a pending read */ +#define MIDI_F_WRITING 0x0008 /* have a pending write */ + + /* + * flag used to mark a pending close. + */ +#define MIDI_F_CLOSING 0x0040 /* a pending close */ + + /* + * if user has not set block size, then make it adaptive + * (0.25s, or the perhaps last read/write ?) + */ +#define MIDI_F_HAS_SIZE 0x0080 /* user set block size */ + /* + * assorted flags related to operating mode. + */ +#define MIDI_F_STEREO 0x0100 /* doing stereo */ +#define MIDI_F_NBIO 0x0200 /* do non-blocking i/o */ +#define MIDI_F_PASSTHRU 0x0400 /* pass received data to output port */ + + /* + * these flags mark a pending abort on a r/w operation. + */ +#define MIDI_F_ABORTING 0x1000 /* a pending abort */ + + /* + * this is used to mark that board initialization is needed, e.g. + * because of a change in sampling rate, format, etc. -- It will + * be done at the next convenient time. + */ +#define MIDI_F_INIT 0x4000 /* changed parameters. need init */ + + int play_blocksize, rec_blocksize; /* blocksize for io and dma ops */ + +#define mwsel midi_dbuf_out.sel +#define mrsel midi_dbuf_in.sel + u_long interrupts; /* counter of interrupts */ + u_long magic; +#define MAGIC(unit) ( 0xa4d10de0 + unit ) + void *device_data ; /* just in case it is needed...*/ + + midi_intr_t *intr; /* interrupt handler of the upper layer (ie sequencer) */ + void *intrarg; /* argument to interrupt handler */ + + /* The following is the interface from a midi sequencer to a midi device. */ + synthdev_info synth; + + /* This is the status message to display via /dev/midistat */ + char midistat[128]; +} ; + +/* + * then ioctls and other stuff + */ + +#define NMIDI_MAX 64 /* Number of supported devices */ + +/* + * many variables should be reduced to a range. Here define a macro + */ + +#define RANGE(var, low, high) (var) = \ +((var)<(low)?(low) : (var)>(high)?(high) : (var)) + +/* + * convert dev_t to unit and dev + */ +#define MIDIMINOR(x) (minor(x)) +#define MIDIUNIT(x) ((MIDIMINOR(x) & 0x000000f0) >> 4) +#define MIDIDEV(x) (MIDIMINOR(x) & 0x0000000f) +#define MIDIMKMINOR(u, d) (((u) & 0x0f) << 4 | ((d) & 0x0f)) +#define MIDIMKDEV(m, u, d) (makedev((m), MIDIMKMINOR((u), (d)))) + +/* + * see if the device is configured + */ +#define MIDICONFED(x) ((x)->ioctl != NULL) + +/* + * finally, all default parameters + */ +#define MIDI_BUFFSIZE (4 * 1024) /* XXX */ + +/* + * some macros for debugging purposes + * DDB/DEB to enable/disable debugging stuff + * BVDDB to enable debugging when bootverbose + */ +#define DDB(x) x /* XXX */ +#define BVDDB(x) if (bootverbose) x + +#ifndef DEB +#define DEB(x) +#endif + + extern mididev_info midi_info[NMIDI_MAX]; + + extern u_long nmidi; + extern u_long nsynth; + +/* This is the generic midi drvier initializer. */ + int midiinit(mididev_info *d, device_t dev); + +/* This provides an access to the mididev_info. */ + mididev_info *get_mididev_info(dev_t i_dev, int *unit); + +/* These are the generic methods for a midi driver. */ + d_open_t midi_open; + d_close_t midi_close; + d_ioctl_t midi_ioctl; + d_read_t midi_read; + d_write_t midi_write; + d_poll_t midi_poll; + +/* Common interrupt handler */ +void midi_intr(mididev_info *); + +/* + * library functions (in midi.c) + */ +#define splmidi() spltty() + +/* + * Minor numbers for the midi driver. + */ + +#define MIDI_DEV_MIDIN 2 /* Raw midi access */ +#define MIDI_DEV_STATUS 11 /* /dev/midistat */ + +#endif /* _MIDI_H_ */ diff --git a/sys/dev/sound/midi/midibuf.c b/sys/dev/sound/midi/midibuf.c new file mode 100644 index 0000000..4e23800 --- /dev/null +++ b/sys/dev/sound/midi/midibuf.c @@ -0,0 +1,424 @@ +/* + * Copyright (C) 1999 Seigo Tanimura + * All rights reserved. + * + * 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 file implements a midi event/message queue. A midi + * event/message queue holds midi events and messages to + * transmit to or received from a midi interface. + */ + +#include "opt_devfs.h" + +#include <dev/sound/midi/midi.h> + +/* Some macros to handle the queue. */ +#define DATA_AVAIL(dbuf) ((dbuf)->rl) +#define SPACE_AVAIL(dbuf) ((dbuf)->fl) + +static void queuerawdata(midi_dbuf *dbuf, char *data, int len); +static void queueuiodata(midi_dbuf *dbuf, struct uio *buf, int len); +static void dequeuerawdata(midi_dbuf *dbuf, char *data, int len); +static void copyrawdata(midi_dbuf *dbuf, char *data, int len); +static void dequeueuiodata(midi_dbuf *dbuf, struct uio *buf, int len); + +/* + * Here are the functions to interact to the midi device drivers. + * These are called from midi device driver functions under sys/i386/isa/snd. + */ + +int +midibuf_init(midi_dbuf *dbuf) +{ + if (dbuf->buf != NULL) + free(dbuf->buf, M_DEVBUF); + dbuf->buf = malloc(MIDI_BUFFSIZE, M_DEVBUF, M_NOWAIT); + bzero(dbuf->buf, MIDI_BUFFSIZE); + dbuf->bufsize = MIDI_BUFFSIZE; + dbuf->rp = dbuf->fp = 0; + dbuf->dl = 0; + dbuf->rl = 0; + dbuf->fl = dbuf->bufsize; + dbuf->int_count = 0; + dbuf->chan = 0; + /*dbuf->unit_size = 1;*/ /* The drivers are responsible. */ + bzero(&dbuf->sel, sizeof(dbuf->sel)); + dbuf->total = 0; + dbuf->prev_total = 0; + dbuf->blocksize = dbuf->bufsize / 4; + + return (0); +} + +/* The sequencer calls this function to queue data. */ +int +midibuf_seqwrite(midi_dbuf *dbuf, u_char* data, int len) +{ + int i, lwrt, lwritten; + + /* Is this a real queue? */ + if (dbuf == (midi_dbuf *)NULL) + return (0); + + lwritten = 0; + /* Write down every single byte. */ + while (len > 0) { + /* Find out the number of bytes to write. */ + lwrt = SPACE_AVAIL(dbuf); + if (lwrt > len) + lwrt = len; + if (lwrt > 0) { + /* We can write some now. Queue the data. */ + queuerawdata(dbuf, data, lwrt); + + lwritten += lwrt; + len -= lwrt; + data += lwrt; + } + + /* Have we got still more data to write? */ + if (len > 0) { + /* Yes, sleep until we have enough space. */ + i = tsleep((void *)&dbuf->tsleep_out, PRIBIO | PCATCH, "mbsqwt", 0); + if (i == EINTR || i == ERESTART) + return (-i); + } + } + + return (lwritten); +} + +/* sndwrite calls this function to queue data. */ +int +midibuf_uiowrite(midi_dbuf *dbuf, struct uio *buf, int len) +{ + int i, lwrt, lwritten; + + /* Is this a real queue? */ + if (dbuf == (midi_dbuf *)NULL) + return (0); + + lwritten = 0; + /* Write down every single byte. */ + while (len > 0) { + /* Find out the number of bytes to write. */ + lwrt = SPACE_AVAIL(dbuf); + if (lwrt > len) + lwrt = len; + if (lwrt > 0) { + /* We can write some now. Queue the data. */ + queueuiodata(dbuf, buf, lwrt); + + lwritten += lwrt; + len -= lwrt; + } + + /* Have we got still more data to write? */ + if (len > 0) { + /* Yes, sleep until we have enough space. */ + i = tsleep(&dbuf->tsleep_out, PRIBIO | PCATCH, "mbuiwt", 0); + if (i == EINTR || i == ERESTART) + return (-i); + } + } + + return (lwritten); +} + +int +midibuf_output_intr(midi_dbuf *dbuf, u_char *data, int len) +{ + int lrd; + + /* Is this a real queue? */ + if (dbuf == (midi_dbuf *)NULL) + return (0); + + /* Have we got any data in the queue? */ + if ((lrd = DATA_AVAIL(dbuf)) == 0) + return (0); + + /* Dequeue the data. */ + if (lrd > len) + lrd = len; + dequeuerawdata(dbuf, data, lrd); + + return (lrd); +} + +int +midibuf_input_intr(midi_dbuf *dbuf, u_char *data, int len) +{ + int lwritten; + + /* Is this a real queue? */ + if (dbuf == (midi_dbuf *)NULL) + return (0); + + lwritten = 0; + + /* Have we got any data to write? */ + if (len == 0) + return (0); + /* Can we write now? */ + if (SPACE_AVAIL(dbuf) < len) + return (-EAGAIN); + + /* We can write some now. Queue the data. */ + queuerawdata(dbuf, data, len); + lwritten = len; + + /* Have we managed to write the whole data? */ + if (lwritten < len) + printf("midibuf_input_intr: queue did not have enough space, discarded %d bytes out of %d bytes.\n", len - lwritten, len); + + return (lwritten); +} + +/* The sequencer calls this function to dequeue data. */ +int +midibuf_seqread(midi_dbuf *dbuf, u_char* data, int len) +{ + int i, lrd, lread; + + /* Is this a real queue? */ + if (dbuf == (midi_dbuf *)NULL) + return (0); + + lread = 0; + /* Write down every single byte. */ + while (len > 0) { + /* Have we got data to read? */ + if ((lrd = DATA_AVAIL(dbuf)) == 0) { + /* No, sleep until we have data ready to read. */ + i = tsleep(&dbuf->tsleep_in, PRIBIO | PCATCH, "mbsqrd", 0); + if (i == EINTR || i == ERESTART) + return (-i); + if (i == EWOULDBLOCK) + continue; + /* Find out the number of bytes to read. */ + lrd = DATA_AVAIL(dbuf); + } + + if (lrd > len) + lrd = len; + if (lrd > 0) { + /* We can read some data now. Dequeue the data. */ + dequeuerawdata(dbuf, data, lrd); + + lread += lrd; + len -= lrd; + data += lrd; + } + } + + return (lread); +} + +/* The sequencer calls this function to copy data without dequeueing. */ +int +midibuf_seqcopy(midi_dbuf *dbuf, u_char* data, int len) +{ + int i, lrd, lread; + + /* Is this a real queue? */ + if (dbuf == (midi_dbuf *)NULL) + return (0); + + lread = 0; + /* Write down every single byte. */ + while (len > 0) { + /* Have we got data to read? */ + if ((lrd = DATA_AVAIL(dbuf)) == 0) { + /* No, sleep until we have data ready to read. */ + i = tsleep(&dbuf->tsleep_in, PRIBIO | PCATCH, "mbsqrd", 0); + if (i == EINTR || i == ERESTART) + return (-i); + if (i == EWOULDBLOCK) + continue; + /* Find out the number of bytes to read. */ + lrd = DATA_AVAIL(dbuf); + } + + if (lrd > len) + lrd = len; + if (lrd > 0) { + /* We can read some data now. Copy the data. */ + copyrawdata(dbuf, data, lrd); + + lread += lrd; + len -= lrd; + data += lrd; + } + } + + return (lread); +} + +/* sndread calls this function to dequeue data. */ +int +midibuf_uioread(midi_dbuf *dbuf, struct uio *buf, int len) +{ + int i, lrd, lread; + + /* Is this a real queue? */ + if (dbuf == (midi_dbuf *)NULL) + return (0); + + lread = 0; + while (len > 0 && lread == 0) { + /* Have we got data to read? */ + if ((lrd = DATA_AVAIL(dbuf)) == 0) { + /* No, sleep until we have data ready to read. */ + i = tsleep(&dbuf->tsleep_in, PRIBIO | PCATCH, "mbuird", 0); + if (i == EINTR || i == ERESTART) + return (-i); + if (i == EWOULDBLOCK) + continue; + /* Find out the number of bytes to read. */ + lrd = DATA_AVAIL(dbuf); + } + + if (lrd > len) + lrd = len; + if (lrd > 0) { + /* We can read some data now. Dequeue the data. */ + dequeueuiodata(dbuf, buf, lrd); + + lread += lrd; + len -= lrd; + } + } + + return (lread); +} + +/* + * The functions below here are the libraries for the above ones. + */ + +static void +queuerawdata(midi_dbuf *dbuf, char *data, int len) +{ + /* dbuf->fp might wrap around dbuf->bufsize. */ + if (dbuf->bufsize - dbuf->fp < len) { + /* The new data wraps, copy them twice. */ + memcpy(dbuf->buf + dbuf->fp, data, dbuf->bufsize - dbuf->fp); + memcpy(dbuf->buf, data + dbuf->bufsize - dbuf->fp, len - (dbuf->bufsize - dbuf->fp)); + } else + /* The new data do not wrap, once is enough. */ + memcpy(dbuf->buf + dbuf->fp, data, len); + + /* Adjust the pointer and the length counters. */ + dbuf->fp = (dbuf->fp + len) % dbuf->bufsize; + dbuf->fl -= len; + dbuf->rl += len; + + /* Wake up the processes sleeping on input data. */ + wakeup(&dbuf->tsleep_in); + if (dbuf->sel.si_pid && dbuf->rl >= dbuf->blocksize) + selwakeup(&dbuf->sel); +} + +static void +queueuiodata(midi_dbuf *dbuf, struct uio *buf, int len) +{ + /* dbuf->fp might wrap around dbuf->bufsize. */ + if (dbuf->bufsize - dbuf->fp < len) { + /* The new data wraps, copy them twice. */ + uiomove((caddr_t)(dbuf->buf + dbuf->fp), dbuf->bufsize - dbuf->fp, buf); + uiomove((caddr_t)(dbuf->buf), len - (dbuf->bufsize - dbuf->fp), buf); + } else + /* The new data do not wrap, once is enough. */ + uiomove((caddr_t)(dbuf->buf + dbuf->fp), len, buf); + + /* Adjust the pointer and the length counters. */ + dbuf->fp = (dbuf->fp + len) % dbuf->bufsize; + dbuf->fl -= len; + dbuf->rl += len; + + /* Wake up the processes sleeping on queueing. */ + wakeup(&dbuf->tsleep_in); + if (dbuf->sel.si_pid && dbuf->rl >= dbuf->blocksize) + selwakeup(&dbuf->sel); +} + +static void +dequeuerawdata(midi_dbuf *dbuf, char *data, int len) +{ + /* Copy the data. */ + copyrawdata(dbuf, data, len); + + /* Adjust the pointer and the length counters. */ + dbuf->rp = (dbuf->rp + len) % dbuf->bufsize; + dbuf->rl -= len; + dbuf->fl += len; + + /* Wake up the processes sleeping on queueing. */ + wakeup(&dbuf->tsleep_out); + if (dbuf->sel.si_pid && dbuf->fl >= dbuf->blocksize) + selwakeup(&dbuf->sel); +} + +static void +copyrawdata(midi_dbuf *dbuf, char *data, int len) +{ + /* dbuf->rp might wrap around dbuf->bufsize. */ + if (dbuf->bufsize - dbuf->rp < len) { + /* The data to be read wraps, copy them twice. */ + memcpy(data, dbuf->buf + dbuf->rp, dbuf->bufsize - dbuf->rp); + memcpy(data + dbuf->bufsize - dbuf->rp, dbuf->buf, len - (dbuf->bufsize - dbuf->rp)); + } else + /* The new data do not wrap, once is enough. */ + memcpy(data, dbuf->buf + dbuf->rp, len); +} + +static void +dequeueuiodata(midi_dbuf *dbuf, struct uio *buf, int len) +{ + /* dbuf->rp might wrap around dbuf->bufsize. */ + if (dbuf->bufsize - dbuf->rp < len) { + /* The new data wraps, copy them twice. */ + uiomove((caddr_t)(dbuf->buf + dbuf->rp), dbuf->bufsize - dbuf->rp, buf); + uiomove((caddr_t)(dbuf->buf), len - (dbuf->bufsize - dbuf->rp), buf); + } else + /* The new data do not wrap, once is enough. */ + uiomove((caddr_t)(dbuf->buf + dbuf->rp), len, buf); + + /* Adjust the pointer and the length counters. */ + dbuf->rp = (dbuf->rp + len) % dbuf->bufsize; + dbuf->rl -= len; + dbuf->fl += len; + + /* Wake up the processes sleeping on queueing. */ + wakeup(&dbuf->tsleep_out); + if (dbuf->sel.si_pid && dbuf->fl >= dbuf->blocksize) + selwakeup(&dbuf->sel); +} diff --git a/sys/dev/sound/midi/midibuf.h b/sys/dev/sound/midi/midibuf.h new file mode 100644 index 0000000..d40019d --- /dev/null +++ b/sys/dev/sound/midi/midibuf.h @@ -0,0 +1,64 @@ +/* + * Include file for midi buffer. + * + * Copyright by Seigo Tanimura 1999. + * + * 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. + * + * $FreeBSD$ + * + */ + +/* + * descriptor of a midi buffer. See midibuf.c for documentation. + * (rp,rl) and (fp,fl) identify the READY and FREE regions of the + * buffer. dl contains the length used for dma transfer, dl>0 also + * means that the channel is busy and there is a DMA transfer in progress. + */ + +typedef struct _midi_dbuf { + char *buf; + int bufsize ; + volatile int rp, fp; /* pointers to the ready and free area */ + volatile int dl; /* transfer size */ + volatile int rl, fl; /* length of ready and free areas. */ + int int_count; + int chan; /* dma channel */ + int unit_size ; /* unit size */ + struct selinfo sel; + u_long total; /* total bytes processed */ + u_long prev_total; /* copy of the above when GETxPTR called */ + int tsleep_in, tsleep_out; /* pillows to tsleep on */ + int blocksize; /* block size */ +} midi_dbuf ; + +/* + * These are the midi buffer methods, used in midi interface devices. + */ +int midibuf_init(midi_dbuf *dbuf); +int midibuf_seqwrite(midi_dbuf *dbuf, u_char* data, int len); +int midibuf_uiowrite(midi_dbuf *dbuf, struct uio *buf, int len); +int midibuf_output_intr(midi_dbuf *dbuf, u_char *data, int len); +int midibuf_input_intr(midi_dbuf *dbuf, u_char *data, int len); +int midibuf_seqread(midi_dbuf *dbuf, u_char* data, int len); +int midibuf_seqcopy(midi_dbuf *dbuf, u_char* data, int len); +int midibuf_uioread(midi_dbuf *dbuf, struct uio *buf, int len); diff --git a/sys/dev/sound/midi/midisynth.c b/sys/dev/sound/midi/midisynth.c new file mode 100644 index 0000000..7d668fd --- /dev/null +++ b/sys/dev/sound/midi/midisynth.c @@ -0,0 +1,632 @@ +/* + * 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 interface for a sequencer to interact a midi driver. + * This interface translates the sequencer operations to the corresponding + * midi messages, and vice versa. + */ + +#include "opt_devfs.h" + +#include <stddef.h> +#include <dev/sound/midi/midi.h> + +#define TYPEDRANGE(type, x, lower, upper) \ +{ \ + type tl, tu; \ + tl = (lower); \ + tu = (upper); \ + if (x < tl) { \ + x = tl; \ + } else if(x > tu) { \ + x = tu; \ + } \ +} + +/* + * These functions goes into midisynthdev_op_desc. + */ +static mdsy_killnote_t synth_killnote; +static mdsy_setinstr_t synth_setinstr; +static mdsy_startnote_t synth_startnote; +static mdsy_reset_t synth_reset; +static mdsy_hwcontrol_t synth_hwcontrol; +static mdsy_loadpatch_t synth_loadpatch; +static mdsy_panning_t synth_panning; +static mdsy_aftertouch_t synth_aftertouch; +static mdsy_controller_t synth_controller; +static mdsy_patchmgr_t synth_patchmgr; +static mdsy_bender_t synth_bender; +static mdsy_allocvoice_t synth_allocvoice; +static mdsy_setupvoice_t synth_setupvoice; +static mdsy_sendsysex_t synth_sendsysex; +static mdsy_prefixcmd_t synth_prefixcmd; +static mdsy_volumemethod_t synth_volumemethod; +static mdsy_readraw_t synth_readraw; +static mdsy_writeraw_t synth_writeraw; + +/* + * This is the synthdev_info for a midi interface device. + * You may have to replace a few of functions for an internal + * synthesizer. + */ +synthdev_info midisynth_op_desc = { + synth_killnote, + synth_setinstr, + synth_startnote, + synth_reset, + synth_hwcontrol, + synth_loadpatch, + synth_panning, + synth_aftertouch, + synth_controller, + synth_patchmgr, + synth_bender, + synth_allocvoice, + synth_setupvoice, + synth_sendsysex, + synth_prefixcmd, + synth_volumemethod, + synth_readraw, + synth_writeraw, +}; + +/* The following functions are local. */ +static int synth_leavesysex(mididev_info *md); + +/* + * Here are the main functions to interact to the midi sequencer. + * These are called from the sequencer functions in sys/i386/isa/snd/sequencer.c. + */ + +static int +synth_killnote(mididev_info *md, int chn, int note, int vel) +{ + int unit, msg, chp; + synthdev_info *sd; + u_char c[3]; + + unit = md->unit; + sd = &md->synth; + + if (note < 0 || note > 127 || chn < 0 || chn > 15) + return (EINVAL); + TYPEDRANGE(int, vel, 0, 127); + if (synth_leavesysex(md) == EAGAIN) + return (EAGAIN); + + msg = sd->prev_out_status & 0xf0; + chp = sd->prev_out_status & 0x0f; + + if (chp == chn && ((msg == 0x90 && vel == 64) || msg == 0x80)) { + /* Use running status. */ + c[0] = (u_char)note; + if (msg == 0x90) + /* The note was on. */ + c[1] = 0; + else + c[1] = (u_char)vel; + + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 2, 1) == EAGAIN) + return (EAGAIN); + } else { + if (vel == 64) { + c[0] = 0x90 | (chn & 0x0f); /* Note on. */ + c[1] = (u_char)note; + c[2] = 0; + } else { + c[0] = 0x80 | (chn & 0x0f); /* Note off. */ + c[1] = (u_char)note; + c[2] = (u_char)vel; + } + + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 3, 1) == EAGAIN) + return EAGAIN; + /* Update the status. */ + sd->prev_out_status = c[0]; + } + + return (0); +} + +static int +synth_setinstr(mididev_info *md, int chn, int instr) +{ + int unit; + synthdev_info *sd; + u_char c[2]; + + unit = md->unit; + sd = &md->synth; + + if (instr < 0 || instr > 127 || chn < 0 || chn > 15) + return (EINVAL); + + if (synth_leavesysex(md) == EAGAIN) + return (EAGAIN); + + c[0] = 0xc0 | (chn & 0x0f); /* Progamme change. */ + c[1] = (u_char)instr; + if (md->synth.writeraw(md, c, 3, 1) == EAGAIN) + return (EAGAIN); + /* Update the status. */ + sd->prev_out_status = c[0]; + + return (0); +} + +static int +synth_startnote(mididev_info *md, int chn, int note, int vel) +{ + int unit, msg, chp; + synthdev_info *sd; + u_char c[3]; + + unit = md->unit; + sd = &md->synth; + + if (note < 0 || note > 127 || chn < 0 || chn > 15) + return (EINVAL); + TYPEDRANGE(int, vel, 0, 127); + if (synth_leavesysex(md) == EAGAIN) + return (EAGAIN); + + msg = sd->prev_out_status & 0xf0; + chp = sd->prev_out_status & 0x0f; + + if (chp == chn && msg == 0x90) { + /* Use running status. */ + c[0] = (u_char)note; + c[1] = (u_char)vel; + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 2, 1) == EAGAIN) + return (EAGAIN); + } else { + c[0] = 0x90 | (chn & 0x0f); /* Note on. */ + c[1] = (u_char)note; + c[2] = (u_char)vel; + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 3, 1) == EAGAIN) + return (EAGAIN); + /* Update the status. */ + sd->prev_out_status = c[0]; + } + + return (0); +} + +static int +synth_reset(mididev_info *md) +{ + synth_leavesysex(md); + return (0); +} + +static int +synth_hwcontrol(mididev_info *md, u_char *event) +{ + /* NOP. */ + return (0); +} + +static int +synth_loadpatch(mididev_info *md, int format, struct uio *buf, int offs, int count, int pmgr_flag) +{ + struct sysex_info sysex; + synthdev_info *sd; + int unit, i, eox_seen, first_byte, left, src_offs, hdr_size; + u_char c[count]; + + unit = md->unit; + sd = &md->synth; + + eox_seen = 0; + first_byte = 1; + hdr_size = offsetof(struct sysex_info, data); + + if (synth_leavesysex(md) == EAGAIN) + return (EAGAIN); + + if (synth_prefixcmd(md, 0xf0)) + return (0); + if (format != SYSEX_PATCH) { + printf("synth_loadpatch: patch format 0x%x is invalid.\n", format); + return (EINVAL); + } + if (count < hdr_size) { + printf("synth_loadpatch: patch header is too short.\n"); + return (EINVAL); + } + count -= hdr_size; + + /* Copy the patch data. */ + if (uiomove((caddr_t)&((char *)&sysex)[offs], hdr_size - offs, buf)) + printf("synth_loadpatch: memory mangled?\n"); + + if (count < sysex.len) { + sysex.len = (long)count; + printf("synth_loadpatch: sysex record of %d bytes is too long, adjusted to %d bytes.\n", (int)sysex.len, count); + } + left = sysex.len; + src_offs = 0; + + for (i = 0 ; i < left ; i++) { + uiomove((caddr_t)&c[i], 1, buf); + eox_seen = i > 0 && (c[i] & 0x80) != 0; + if (eox_seen && c[i] != 0xf7) + c[i] = 0xf7; + if (i == 0 && c[i] != 0x80) { + printf("synth_loadpatch: sysex does not begin with the status.\n"); + return (EINVAL); + } + if (!first_byte && (c[i] & 0x80) != 0) { + md->synth.writeraw(md, c, i + 1, 0); + /* Update the status. */ + sd->prev_out_status = c[i]; + return (0); + } + first_byte = 0; + } + + if (!eox_seen) { + c[0] = 0xf7; + md->synth.writeraw(md, c, 1, 0); + sd->prev_out_status = c[0]; + } + + return (0); +} + +static int +synth_panning(mididev_info *md, int chn, int pan) +{ + /* NOP. */ + return (0); +} + +static int +synth_aftertouch(mididev_info *md, int chn, int press) +{ + int unit, msg, chp; + synthdev_info *sd; + u_char c[2]; + + unit = md->unit; + sd = &md->synth; + + if (press < 0 || press > 127 || chn < 0 || chn > 15) + return (EINVAL); + if (synth_leavesysex(md) == EAGAIN) + return (EAGAIN); + + msg = sd->prev_out_status & 0xf0; + chp = sd->prev_out_status & 0x0f; + + if (chp == chn && msg == 0xd0) { + /* Use running status. */ + c[0] = (u_char)press; + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 1, 1) == EAGAIN) + return (EAGAIN); + } else { + c[0] = 0xd0 | (chn & 0x0f); /* Channel Pressure. */ + c[1] = (u_char)press; + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 2, 1) == EAGAIN) + return (EAGAIN); + /* Update the status. */ + sd->prev_out_status = c[0]; + } + + return (0); +} + +static int +synth_controller(mididev_info *md, int chn, int ctrlnum, int val) +{ + int unit, msg, chp; + synthdev_info *sd; + u_char c[3]; + + unit = md->unit; + sd = &md->synth; + + if (ctrlnum < 1 || ctrlnum > 127 || chn < 0 || chn > 15) + return (EINVAL); + if (synth_leavesysex(md) == EAGAIN) + return (EAGAIN); + + msg = sd->prev_out_status & 0xf0; + chp = sd->prev_out_status & 0x0f; + + if (chp == chn && msg == 0xb0) { + /* Use running status. */ + c[0] = (u_char)ctrlnum; + c[1] = (u_char)val & 0x7f; + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 2, 1) == EAGAIN) + return (EAGAIN); + } else { + c[0] = 0xb0 | (chn & 0x0f); /* Control Message. */ + c[1] = (u_char)ctrlnum; + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 3, 1) == EAGAIN) + return (EAGAIN); + /* Update the status. */ + sd->prev_out_status = c[0]; + } + + return (0); +} + +static int +synth_patchmgr(mididev_info *md, struct patmgr_info *rec) +{ + return (EINVAL); +} + +static int +synth_bender(mididev_info *md, int chn, int val) +{ + int unit, msg, chp; + synthdev_info *sd; + u_char c[3]; + + unit = md->unit; + sd = &md->synth; + + if (val < 0 || val > 16383 || chn < 0 || chn > 15) + return (EINVAL); + if (synth_leavesysex(md) == EAGAIN) + return (EAGAIN); + + msg = sd->prev_out_status & 0xf0; + chp = sd->prev_out_status & 0x0f; + + if (chp == chn && msg == 0xe0) { + /* Use running status. */ + c[0] = (u_char)val & 0x7f; + c[1] = (u_char)(val >> 7) & 0x7f; + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 2, 1) == EAGAIN) + return (EAGAIN); + } else { + c[0] = 0xe0 | (chn & 0x0f); /* Pitch bend. */ + c[1] = (u_char)val & 0x7f; + c[2] = (u_char)(val >> 7) & 0x7f; + if (synth_prefixcmd(md, c[0])) + return (0); + if (md->synth.writeraw(md, c, 3, 1) == EAGAIN) + return (EAGAIN); + /* Update the status. */ + sd->prev_out_status = c[0]; + } + + return (0); +} + +static int +synth_allocvoice(mididev_info *md, int chn, int note, struct voice_alloc_info *alloc) +{ + /* NOP. */ + return (0); +} + +static int +synth_setupvoice(mididev_info *md, int voice, int chn) +{ + /* NOP. */ + return (0); +} + +static int +synth_sendsysex(mididev_info *md, u_char *sysex, int len) +{ + int unit, i, j; + synthdev_info *sd; + u_char c[len]; + + unit = md->unit; + sd = &md->synth; + + for (i = 0 ; i < len ; i++) { + switch (sysex[i]) { + case 0xf0: + /* Sysex begins. */ + if (synth_prefixcmd(md, 0xf0)) + return (0); + sd->sysex_state = 1; + break; + case 0xf7: + /* Sysex ends. */ + if (!sd->sysex_state) + return (0); + sd->sysex_state = 0; + break; + default: + if (!sd->sysex_state) + return (0); + if ((sysex[i] & 0x80) != 0) { + /* A status in a sysex? */ + sysex[i] = 0xf7; + sd->sysex_state = 0; + } + break; + } + c[i] = sysex[i]; + if (!sd->sysex_state) + break; + } + if (md->synth.writeraw(md, c, i, 1) == EAGAIN) + return (EAGAIN); + + /* Update the status. */ + for (j = i - 1 ; j >= 0 ; j--) + if ((c[j] & 0x80) != 0) { + sd->prev_out_status = c[j]; + break; + } + + return (0); +} + +static int +synth_prefixcmd(mididev_info *md, int status) +{ + /* NOP. */ + return (0); +} + +static int +synth_volumemethod(mididev_info *md, int mode) +{ + /* NOP. */ + return (0); +} + +static int +synth_readraw(mididev_info *md, u_char *buf, int len, int nonblock) +{ + int unit, ret, s; + + if (md == NULL) + return (ENXIO); + + unit = md->unit; + if (unit >= nmidi + nsynth) { + DEB(printf("synth_readraw: unit %d does not exist.\n", unit)); + return (ENXIO); + } + if ((md->fflags & FREAD) == 0) { + DEB(printf("mpu_readraw: unit %d is not for reading.\n", unit)); + return (EIO); + } + + s = splmidi(); + + /* Begin recording. */ + md->callback(md, MIDI_CB_START | MIDI_CB_RD); + + if (nonblock) { + /* Have we got enough data to read? */ + if (md->midi_dbuf_in.rl < len) + return (EAGAIN); + } + + ret = midibuf_seqread(&md->midi_dbuf_in, buf, len); + + splx(s); + + if (ret < 0) + ret = -ret; + else + ret = 0; + + return (ret); +} + +static int +synth_writeraw(mididev_info *md, u_char *buf, int len, int nonblock) +{ + int unit, ret, s; + + if (md == NULL) + return (ENXIO); + + unit = md->unit; + + if (unit >= nmidi + nsynth) { + DEB(printf("synth_writeraw: unit %d does not exist.\n", unit)); + return (ENXIO); + } + if ((md->fflags & FWRITE) == 0) { + DEB(printf("synth_writeraw: unit %d is not for writing.\n", unit)); + return (EIO); + } + + /* For nonblocking, have we got enough space to write? */ + if (nonblock && md->midi_dbuf_out.fl < len) + return (EAGAIN); + + s = splmidi(); + + ret = midibuf_seqwrite(&md->midi_dbuf_out, buf, len); + if (ret < 0) + ret = -ret; + else + ret = 0; + + /* Begin playing. */ + md->callback(md, MIDI_CB_START | MIDI_CB_WR); + + splx(s); + + return (ret); +} + +/* + * The functions below here are the libraries for the above ones. + */ + +static int +synth_leavesysex(mididev_info *md) +{ + int unit; + synthdev_info *sd; + u_char c; + + unit = md->unit; + sd = &md->synth; + + if (!sd->sysex_state) + return (0); + + sd->sysex_state = 0; + c = 0xf7; + if (md->synth.writeraw(md, &c, sizeof(c), 1) == EAGAIN) + return (EAGAIN); + sd->sysex_state = 0; + /* Update the status. */ + sd->prev_out_status = c; + + return (0); +} diff --git a/sys/dev/sound/midi/midisynth.h b/sys/dev/sound/midi/midisynth.h new file mode 100644 index 0000000..d27e62b --- /dev/null +++ b/sys/dev/sound/midi/midisynth.h @@ -0,0 +1,97 @@ +/* + * include file for midi synthesizer interface. + * + * Copyright by Seigo Tanimura 1999. + * + * 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. + * + * $FreeBSD$ + * + */ + +#define SYNTH_MAX_VOICES 32 + +/* This is the voice allocation state for a synthesizer. */ +struct voice_alloc_info { + int max_voice; + int used_voices; + int ptr; /* For device specific use */ + u_short map[SYNTH_MAX_VOICES]; /* (ch << 8) | (note+1) */ + int timestamp; + int alloc_times[SYNTH_MAX_VOICES]; +}; + +/* This is the channel information for a synthesizer. */ +struct channel_info { + int pgm_num; + int bender_value; + u_char controllers[128]; +}; + +/* These are the function types for a midi synthesizer interface. */ +typedef int (mdsy_killnote_t)(mididev_info *md, int chn, int note, int vel); +typedef int (mdsy_setinstr_t)(mididev_info *md, int chn, int instr); +typedef int (mdsy_startnote_t)(mididev_info *md, int chn, int note, int vel); +typedef int (mdsy_reset_t)(mididev_info *md); +typedef int (mdsy_hwcontrol_t)(mididev_info *md, u_char *event); +typedef int (mdsy_loadpatch_t)(mididev_info *md, int format, struct uio *buf, int offs, int count, int pmgr_flag); +typedef int (mdsy_panning_t)(mididev_info *md, int chn, int pan); +typedef int (mdsy_aftertouch_t)(mididev_info *md, int chn, int press); +typedef int (mdsy_controller_t)(mididev_info *md, int chn, int ctrlnum, int val); +typedef int (mdsy_patchmgr_t)(mididev_info *md, struct patmgr_info *rec); +typedef int (mdsy_bender_t)(mididev_info *md, int chn, int val); +typedef int (mdsy_allocvoice_t)(mididev_info *md, int chn, int note, struct voice_alloc_info *alloc); +typedef int (mdsy_setupvoice_t)(mididev_info *md, int voice, int chn); +typedef int (mdsy_sendsysex_t)(mididev_info *md, u_char *sysex, int len); +typedef int (mdsy_prefixcmd_t)(mididev_info *md, int status); +typedef int (mdsy_volumemethod_t)(mididev_info *md, int mode); +typedef int (mdsy_readraw_t)(mididev_info *md, u_char *buf, int len, int nonblock); +typedef int (mdsy_writeraw_t)(mididev_info *md, u_char *buf, int len, int nonblock); + +/* This is a midi synthesizer interface and state. */ +struct _synthdev_info { + mdsy_killnote_t *killnote; + mdsy_setinstr_t *setinstr; + mdsy_startnote_t *startnote; + mdsy_reset_t *reset; + mdsy_hwcontrol_t *hwcontrol; + mdsy_loadpatch_t *loadpatch; + mdsy_panning_t *panning; + mdsy_aftertouch_t *aftertouch; + mdsy_controller_t *controller; + mdsy_patchmgr_t *patchmgr; + mdsy_bender_t *bender; + mdsy_allocvoice_t *allocvoice; + mdsy_setupvoice_t *setupvoice; + mdsy_sendsysex_t *sendsysex; + mdsy_prefixcmd_t *prefixcmd; + mdsy_volumemethod_t *volumemethod; + mdsy_readraw_t *readraw; + mdsy_writeraw_t *writeraw; + + struct voice_alloc_info alloc; /* Voice allocation. */ + struct channel_info chn_info[16]; /* Channel information. */ + + u_char prev_out_status; /* Previous status. */ + int sysex_state; /* State of sysex transmission. */ +}; +typedef struct _synthdev_info synthdev_info; diff --git a/sys/dev/sound/midi/miditypes.h b/sys/dev/sound/midi/miditypes.h new file mode 100644 index 0000000..c0dfdf6 --- /dev/null +++ b/sys/dev/sound/midi/miditypes.h @@ -0,0 +1,34 @@ +/* + * Include file for type definitions in midi driver. + * + * Copyright by Seigo Tanimura 1999. + * + * 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. + * + * $FreeBSD$ + * + */ + +typedef struct _mididev_info mididev_info; + +typedef int (midi_callback_t)(mididev_info *d, int reason); +typedef void (midi_intr_t)(void *p, mididev_info *md); diff --git a/sys/dev/sound/midi/sequencer.c b/sys/dev/sound/midi/sequencer.c new file mode 100644 index 0000000..ba6a21d --- /dev/null +++ b/sys/dev/sound/midi/sequencer.c @@ -0,0 +1,2040 @@ +/* + * 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 "opt_devfs.h" + +#include <dev/sound/midi/midi.h> +#include <dev/sound/midi/sequencer.h> + +#ifndef DDB +#define DDB(x) +#endif /* DDB */ + +#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_SEQ2 8 /* /dev/sequencer, level 2 interface */ + +#define MIDIDEV_MODE 0x2000 + +/* Length of a sequencer event. */ +#define EV_SZ 8 +#define IEV_SZ 8 + +/* Return value from seq_playevent and the helpers. */ +enum { + MORE, + TIMERARMED, + QUEUEFULL +}; + +/* + * These functions goes into seq_op_desc to get called + * from sound.c. + */ + +static midi_intr_t seq_intr; +static seq_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 */ + + int fflags; /* Access mode */ + + 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_handle timeout_ch; /* Timer callout handler */ + long timer_current; /* Current timer value */ + int timer_running; /* State of timer */ + int midi_open[NMIDI_MAX]; /* State of midi devices. */ + int pending_timer; /* Timer change operation */ + int output_threshould; /* Sequence output threshould */ + int pre_event_timeout; /* Time to wait event input */ + int queueout_pending; /* Pending for the output queue */ + snd_sync_parm sync_parm; /* AIOSYNC parameter set */ + struct proc *sync_proc; /* AIOSYNCing process */ +}; + +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 = { + /* open */ seqopen, + /* close */ seqclose, + /* read */ seqread, + /* write */ seqwrite, + /* ioctl */ seqioctl, + /* poll */ seqpoll, + /* mmap */ nommap, + /* strategy */ nostrategy, + /* name */ "midi", /* XXX */ + /* maj */ CDEV_MAJOR, + /* dump */ nodump, + /* psize */ nopsize, + /* flags */ 0, + /* bmaj */ -1 +}; + +seqdev_info seq_info[NSEQ_MAX] ; +static int seq_info_inited; +u_long nseq = NSEQ_MAX; /* total number of sequencers */ + +/* The followings are the local function. */ +static int seq_init(void); +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_copytoinput(sc_p scp, u_char *event, int len); +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); +static int seq_allocvoice(mididev_info *md, int chn, int note); +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 void seq_timer(void *arg); +static int seq_reset(sc_p scp); +static int seq_openmidi(sc_p scp, mididev_info *md, int flags, int mode, struct proc *p); +static int seq_closemidi(sc_p scp, mididev_info *md, int flags, int mode, struct proc *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); + +/* + * 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) +{ + int unit; + sc_p scp; + seqdev_info *devinfo; + + DEB(printf("seq: initing.\n")); + + /* Have we already inited? */ + if (seq_info_inited) + return (1); + + for (unit = 0 ; unit < nseq ; unit++) { + /* Allocate the softc. */ + scp = malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT); + if (scp == (sc_p)NULL) { + printf("seq%d: softc allocation failed.\n", unit); + return (1); + } + bzero(scp, sizeof(*scp)); + + /* 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; + callout_handle_init(&scp->timeout_ch); + scp->timer_current = 0; + scp->timer_running = 0; + scp->queueout_pending = 0; + + scp->devinfo = devinfo = &seq_info[unit]; + bcopy(&seq_op_desc, devinfo, sizeof(seq_op_desc)); + devinfo->unit = unit; + devinfo->softc = scp; + devinfo->flags = 0; + devinfo->midi_dbuf_in.unit_size = devinfo->midi_dbuf_out.unit_size = EV_SZ; + midibuf_init(&devinfo->midi_dbuf_in); + midibuf_init(&devinfo->midi_dbuf_out); + + make_dev(&seq_cdevsw, MIDIMKMINOR(unit, SND_DEV_SEQ), + UID_ROOT, GID_WHEEL, 0666, "sequencer%d", unit); + } + + /* We have inited. */ + seq_info_inited = 1; + + if (nseq == 1) + printf("seq0: Midi sequencer.\n"); + else + printf("seq0-%lu: Midi sequencers.\n", nseq - 1); + + DEB(printf("seq: inited.\n")); + + return (0); +} + +int +seq_open(dev_t i_dev, int flags, int mode, struct proc *p) +{ + int unit, s, midiunit; + sc_p scp; + seqdev_info *sd; + mididev_info *md; + + unit = MIDIUNIT(i_dev); + + DEB(printf("seq%d: opening.\n", unit)); + + if (unit >= NSEQ_MAX) { + DEB(printf("seq_open: unit %d does not exist.\n", unit)); + return (ENXIO); + } + + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + DEB(printf("seq_open: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + + s = splmidi(); + /* Mark this device busy. */ + if ((sd->flags & SEQ_F_BUSY) != 0) { + splx(s); + DEB(printf("seq_open: unit %d is busy.\n", unit)); + return (EBUSY); + } + sd->flags |= SEQ_F_BUSY; + sd->flags &= ~(SEQ_F_READING | SEQ_F_WRITING); + scp->fflags = flags; + + /* Init the queue. */ + midibuf_init(&sd->midi_dbuf_in); + midibuf_init(&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; + + splx(s); + + /* Open midi devices. */ + for (midiunit = 0 ; midiunit < nmidi + nsynth ; midiunit++) { + md = &midi_info[midiunit]; + if (MIDICONFED(md)) + seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, p); + } + + DEB(printf("seq%d: opened.\n", unit)); + + return (0); +} + +int +seq_close(dev_t i_dev, int flags, int mode, struct proc *p) +{ + int unit, s, i; + sc_p scp; + seqdev_info *sd; + mididev_info *md; + + unit = MIDIUNIT(i_dev); + + DEB(printf("seq%d: closing.\n", unit)); + + if (unit >= NSEQ_MAX) { + DEB(printf("seq_close: unit %d does not exist.\n", unit)); + return (ENXIO); + } + + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + DEB(printf("seq_close: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + + s = splmidi(); + + 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. */ + for (i = 0 ; i < nmidi + nsynth ; i++) { + md = &midi_info[i]; + if (MIDICONFED(md)) + seq_closemidi(scp, md, scp->fflags, MIDIDEV_MODE, p); + } + + /* Stop playing and unmark this device busy. */ + sd->flags &= ~(SEQ_F_BUSY | SEQ_F_READING | SEQ_F_WRITING); + + splx(s); + + DEB(printf("seq%d: closed.\n", unit)); + + return (0); +} + +int +seq_read(dev_t i_dev, struct uio *buf, int flag) +{ + int unit, ret, s, len; + sc_p scp; + seqdev_info *sd; + + unit = MIDIUNIT(i_dev); + + /*DEB(printf("seq%d: reading.\n", unit));*/ + + if (unit >= NSEQ_MAX) { + DEB(printf("seq_read: unit %d does not exist.\n", unit)); + return (ENXIO); + } + + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + DEB(printf("seq_read: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + if ((scp->fflags & FREAD) == 0) { + DEB(printf("seq_read: unit %d is not for reading.\n", unit)); + return (EIO); + } + + s = splmidi(); + + /* Begin recording. */ + 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 { + len = buf->uio_resid; + ret = midibuf_uioread(&sd->midi_dbuf_in, buf, len); + if (ret < 0) + ret = -ret; + else + ret = 0; + } + splx(s); + + 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, s; + sc_p scp; + seqdev_info *sd; + mididev_info *md; + + unit = MIDIUNIT(i_dev); + + /*DEB(printf("seq%d: writing.\n", unit));*/ + + if (unit >= NSEQ_MAX) { + DEB(printf("seq_write: unit %d does not exist.\n", unit)); + return (ENXIO); + } + + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + DEB(printf("seq_write: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + if ((scp->fflags & FWRITE) == 0) { + DEB(printf("seq_write: unit %d is not for writing.\n", unit)); + return (EIO); + } + + p = 0; + countorg = buf->uio_resid; + count = countorg; + + s = splmidi(); + /* Begin playing. */ + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + splx(s); + + /* 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]; + + /* 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]; + if (midiunit < 0 || midiunit >= nmidi + nsynth) + return (ENXIO); + md = &midi_info[midiunit]; + if (!MIDICONFED(md)) + return (ENXIO); + s = splmidi(); + if ((md->flags & MIDI_F_BUSY) == 0 + && seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) != 0) { + splx(s); + return (ENXIO); + } + + DEB(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); + splx(s); + return (ret); + } + + if (ev_code >= 128) { + + /* Some sort of an extended event. The size is eight bytes. */ +#if notyet + if (scp->seq_mode == SEQ_2 && ev_code == SEQ_EXTENDED) { + printf("seq%d: invalid level two event %x.\n", unit, ev_code); + return (EINVAL); + } +#endif /* notyet */ + ev_size = 8; + + if (count < ev_size) { + /* No more data. Start playing now. */ + s = splmidi(); + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + splx(s); + + 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 notyet + if (scp->seq_mode == SEQ_2) { + printf("seq%d: four byte event in level two mode.\n", unit); + return (EINVAL); + } +#endif /* notyet */ + ev_size = 4; + } + if (ev_code == SEQ_MIDIPUTC) { + /* An event passed to the midi device itself. */ + midiunit = event[2]; + if (midiunit < 0 || midiunit >= nmidi + nsynth) + return (ENXIO); + md = &midi_info[midiunit]; + if (!MIDICONFED(md)) + return (ENXIO); + if ((md->flags & MIDI_F_BUSY) == 0 + && (ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc)) != 0) { + seq_reset(scp); + return (ret); + } + } + + /*DEB(printf("seq_write: queueing event %d.\n", event[0]));*/ + /* Now we queue the event. */ + switch (seq_queue(scp, event)) { + case EAGAIN: + s = splmidi(); + /* The queue is full. Start playing now. */ + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + splx(s); + return (0); + case EINTR: + return (EINTR); + case ERESTART: + return (ERESTART); + } + p += ev_size; + count -= ev_size; + } + + /* We have written every single data. Start playing now. */ + s = splmidi(); + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + splx(s); + + return (0); +} + +int +seq_ioctl(dev_t i_dev, u_long cmd, caddr_t arg, int mode, struct proc *p) +{ + int unit, midiunit, ret, tmp, s, arg2; + sc_p scp; + seqdev_info *sd; + mididev_info *md; + struct synth_info *synthinfo; + struct midi_info *midiinfo; + struct patmgr_info *patinfo; + snd_sync_parm *syncparm; + struct seq_event_rec *event; + struct snd_size *sndsize; + + unit = MIDIUNIT(i_dev); + + DEB(printf("seq%d: ioctlling, cmd 0x%x.\n", unit, (int)cmd)); + + if (unit >= NSEQ_MAX) { + DEB(printf("seq_ioctl: unit %d does not exist.\n", unit)); + return (ENXIO); + } + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + DEB(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 ? */ + *(int *)arg = sd->midi_dbuf_out.fl; + break; + + case AIOSSIZE: /* set the current blocksize */ + sndsize = (struct snd_size *)arg; + if (sndsize->play_size <= sd->midi_dbuf_out.unit_size && sndsize->rec_size <= sd->midi_dbuf_in.unit_size) { + sd->flags &= ~MIDI_F_HAS_SIZE; + sd->midi_dbuf_out.blocksize = sd->midi_dbuf_out.unit_size; + sd->midi_dbuf_in.blocksize = sd->midi_dbuf_in.unit_size; + } + 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; + sd->flags |= MIDI_F_HAS_SIZE; + } + /* FALLTHROUGH */ + case AIOGSIZE: /* get the current blocksize */ + sndsize = (struct snd_size *)arg; + sndsize->play_size = sd->midi_dbuf_out.blocksize; + sndsize->rec_size = sd->midi_dbuf_in.blocksize; + + ret = 0; + break; + + case AIOSTOP: + if (*(int *)arg == AIOSYNC_PLAY) { + s = splmidi(); + + /* Stop writing. */ + sd->callback(sd, SEQ_CB_ABORT | SEQ_CB_WR); + + /* Pass the ioctl to the midi devices. */ + for (midiunit = 0 ; midiunit < nmidi + nsynth ; midiunit++) { + md = &midi_info[midiunit]; + if (MIDICONFED(md) && scp->midi_open[midiunit] && (md->flags & MIDI_F_WRITING) != 0) { + arg2 = *(int *)arg; + midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, (caddr_t)&arg2, mode, p); + } + } + + *(int *)arg = sd->midi_dbuf_out.rl; + splx(s); + } + else if (*(int *)arg == AIOSYNC_CAPTURE) { + s = splmidi(); + + /* Stop reading. */ + sd->callback(sd, SEQ_CB_ABORT | SEQ_CB_RD); + + /* Pass the ioctl to the midi devices. */ + for (midiunit = 0 ; midiunit < nmidi + nsynth ; midiunit++) { + md = &midi_info[midiunit]; + if (MIDICONFED(md) && scp->midi_open[midiunit] && (md->flags & MIDI_F_WRITING) != 0) { + arg2 = *(int *)arg; + midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, (caddr_t)&arg2, mode, p); + } + } + + *(int *)arg = sd->midi_dbuf_in.rl; + splx(s); + } + + ret = 0; + break; + + case AIOSYNC: + syncparm = (snd_sync_parm *)arg; + scp->sync_parm = *syncparm; + + /* XXX Should select(2) against us watch the blocksize, or sync_parm? */ + + ret = 0; + 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: +#if notyet + if (scp->seq_mode != SEQ_2) { + ret = EINVAL; + break; + } + ret = tmr->ioctl(tmr_no, cmd, arg); +#endif /* notyet */ + break; + case SNDCTL_TMR_SELECT: +#if notyet + if (scp->seq_mode != SEQ_2) { + ret = EINVAL; + break; + } +#endif /* notyet */ + scp->pending_timer = *(int *)arg; + if (scp->pending_timer < 0 || scp->pending_timer >= /*NTIMER*/1) { + scp->pending_timer = -1; + ret = EINVAL; + break; + } + *(int *)arg = scp->pending_timer; + ret = 0; + break; + case SNDCTL_SEQ_PANIC: + seq_panic(scp); + ret = 0; + break; + case SNDCTL_SEQ_SYNC: + if (mode == O_RDONLY) { + ret = 0; + break; + } + ret = seq_sync(scp); + break; + case SNDCTL_SEQ_RESET: + seq_reset(scp); + ret = 0; + break; + case SNDCTL_SEQ_TESTMIDI: + midiunit = *(int *)arg; + if (midiunit >= nmidi + nsynth) { + ret = ENXIO; + break; + } + md = &midi_info[midiunit]; + if (MIDICONFED(md) && !scp->midi_open[midiunit]) { + ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc); + break; + } + ret = 0; + break; + case SNDCTL_SEQ_GETINCOUNT: + if (mode == O_WRONLY) + *(int *)arg = 0; + else + *(int *)arg = sd->midi_dbuf_in.rl; + ret = 0; + break; + case SNDCTL_SEQ_GETOUTCOUNT: + if (mode == O_RDONLY) + *(int *)arg = 0; + else + *(int *)arg = sd->midi_dbuf_out.fl; + ret = 0; + break; + case SNDCTL_SEQ_CTRLRATE: +#if notyet + if (scp->seq_mode != SEQ_2) { + ret = tmr->ioctl(tmr_no, cmd, arg); + break; + } +#endif /* notyet */ + if (*(int *)arg != 0) { + ret = EINVAL; + break; + } + *(int *)arg = hz; + ret = 0; + break; + case SNDCTL_SEQ_RESETSAMPLES: + midiunit = *(int *)arg; + if (midiunit >= nmidi + nsynth) { + ret = ENXIO; + break; + } + if (!scp->midi_open[midiunit]) { + md = &midi_info[midiunit]; + if (MIDICONFED(md)) { + ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc); + if (ret != 0) + break; + } else { + ret = EBUSY; + break; + } + } + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, p); + break; + case SNDCTL_SEQ_NRSYNTHS: + *(int *)arg = nmidi + nsynth; + ret = 0; + break; + case SNDCTL_SEQ_NRMIDIS: + *(int *)arg = nmidi + nsynth; + ret = 0; + break; + case SNDCTL_SYNTH_MEMAVL: + midiunit = *(int *)arg; + if (midiunit >= nmidi + nsynth) { + ret = ENXIO; + break; + } + if (!scp->midi_open[midiunit]) { + md = &midi_info[midiunit]; + if (MIDICONFED(md)) { + ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc); + if (ret != 0) + break; + } else { + ret = EBUSY; + break; + } + } + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, p); + break; + case SNDCTL_FM_4OP_ENABLE: + midiunit = *(int *)arg; + if (midiunit >= nmidi + nsynth) { + ret = ENXIO; + break; + } + if (!scp->midi_open[midiunit]) { + md = &midi_info[midiunit]; + if (MIDICONFED(md)) { + ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc); + if (ret != 0) + break; + } else { + ret = EBUSY; + break; + } + } + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, p); + break; + case SNDCTL_SYNTH_INFO: + synthinfo = (struct synth_info *)arg; + midiunit = synthinfo->device; + if (midiunit >= nmidi + nsynth) { + ret = ENXIO; + break; + } + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, p); + break; + case SNDCTL_SEQ_OUTOFBAND: + event = (struct seq_event_rec *)arg; + s = splmidi(); + ret = seq_playevent(scp, event->arr); + splx(s); + break; + case SNDCTL_MIDI_INFO: + midiinfo = (struct midi_info *)arg; + midiunit = midiinfo->device; + if (midiunit >= nmidi + nsynth) { + ret = ENXIO; + break; + } + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, p); + break; + case SNDCTL_PMGR_IFACE: + patinfo = (struct patmgr_info *)arg; + midiunit = patinfo->device; + if (midiunit >= nmidi + nsynth) { + ret = ENXIO; + break; + } + if (!scp->midi_open[midiunit]) { + ret = EBUSY; + break; + } + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, p); + break; + case SNDCTL_PMGR_ACCESS: + patinfo = (struct patmgr_info *)arg; + midiunit = patinfo->device; + if (midiunit >= nmidi + nsynth) { + ret = ENXIO; + break; + } + if (!scp->midi_open[midiunit]) { + md = &midi_info[midiunit]; + if (MIDICONFED(md)) { + ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc); + if (ret != 0) + break; + } else { + ret = EBUSY; + break; + } + } + ret = midi_ioctl(MIDIMKDEV(major(i_dev), midiunit, SND_DEV_MIDIN), cmd, arg, mode, p); + break; + case SNDCTL_SEQ_THRESHOLD: + tmp = *(int *)arg; + RANGE(tmp, 1, sd->midi_dbuf_out.bufsize - 1); + scp->output_threshould = tmp; + ret = 0; + break; + case SNDCTL_MIDI_PRETIME: + tmp = *(int *)arg; + if (tmp < 0) + tmp = 0; + tmp = (hz * tmp) / 10; + scp->pre_event_timeout = tmp; + ret = 0; + break; + default: + if (scp->fflags == O_RDONLY) { + ret = EIO; + break; + } + if (!scp->midi_open[0]) { + md = &midi_info[0]; + if (MIDICONFED(md)) { + ret = seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc); + if (ret != 0) + break; + } else { + ret = EBUSY; + break; + } + } + ret = midi_ioctl(MIDIMKDEV(major(i_dev), 0, SND_DEV_MIDIN), cmd, arg, mode, p); + break; + } + + return (ret); +} + +int +seq_poll(dev_t i_dev, int events, struct proc *p) +{ + int unit, ret, s, lim; + sc_p scp; + seqdev_info *sd; + + unit = MIDIUNIT(i_dev); + + DEB(printf("seq%d: polling.\n", unit)); + + if (unit >= NSEQ_MAX) { + DEB(printf("seq_poll: unit %d does not exist.\n", unit)); + return (ENXIO); + } + sd = get_seqdev_info(i_dev, &unit); + if (sd == NULL) { + DEB(printf("seq_poll: unit %d is not configured.\n", unit)); + return (ENXIO); + } + scp = sd->softc; + + ret = 0; + s = splmidi(); + + /* 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(p, &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(p, &sd->midi_dbuf_in.sel); + else + /* We can write now. */ + ret |= events & (POLLIN | POLLRDNORM); + } + splx(s); + + return (ret); +} + +static void +seq_intr(void *p, mididev_info *md) +{ + sc_p scp; + seqdev_info *sd; + + sd = (seqdev_info *)p; + scp = sd->softc; + + /* 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); +} + +static int +seq_callback(seqdev_info *sd, int reason) +{ + int unit; + sc_p scp; + + /*DEB(printf("seq_callback: reason 0x%x.\n", reason));*/ + + if (sd == NULL) { + DEB(printf("seq_callback: device not configured.\n")); + return (ENXIO); + } + scp = sd->softc; + unit = sd->unit; + + 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 the timer. */ + scp->seq_time = seq_gettime(); + scp->prev_input_time = 0; + + /* Stop recording. */ + sd->flags &= ~SEQ_F_READING; + } + if ((reason & SEQ_CB_WR) != 0 && (sd->flags & SEQ_F_WRITING) != 0) { + /* Stop the timer. */ + seq_stoptimer(scp); + scp->seq_time = seq_gettime(); + scp->prev_event_time = 0; + + /* Stop Playing. */ + sd->flags &= ~SEQ_F_WRITING; + scp->queueout_pending = 0; + } + break; + } + + 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, s; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + /*DEB(printf("seq%d: queueing.\n", unit));*/ + + s = splmidi(); + + /* Start playing if we have some data in the queue. */ + if (sd->midi_dbuf_out.rl >= EV_SZ) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + + if (sd->midi_dbuf_out.fl < EV_SZ) { + /* We have no space. Start playing if not yet. */ + 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. */ + splx(s); + return (EAGAIN); + } else + while (sd->midi_dbuf_out.fl < EV_SZ) { + /* We have no space. Good night. */ + err = tsleep(&sd->midi_dbuf_out.tsleep_out, PRIBIO | PCATCH, "seqque", 0); + if (err == EINTR) + sd->callback(sd, SEQ_CB_STOP | SEQ_CB_WR); + if (err == EINTR || err == ERESTART) { + splx(s); + return (err); + } + } + } + + /* We now have enough space to write. */ + err = midibuf_seqwrite(&sd->midi_dbuf_out, note, EV_SZ); + + splx(s); + + if (err < 0) + err = -err; + else + err = 0; + + return (err); +} + +static void +seq_startplay(sc_p scp) +{ + int unit; + u_char event[EV_SZ]; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + /* Dequeue the events to play. */ + while (sd->midi_dbuf_out.rl >= EV_SZ) { + + /* We are playing now. */ + sd->flags |= SEQ_F_WRITING; + + /* We only copy the event, not dequeue. */ + midibuf_seqcopy(&sd->midi_dbuf_out, event, EV_SZ); + + switch (seq_playevent(scp, event)) { + case TIMERARMED: + /* Dequeue the event. */ + midibuf_seqread(&sd->midi_dbuf_out, event, EV_SZ); + /* FALLTHRU */ + case QUEUEFULL: + /* We cannot play further. */ + return; + case MORE: + /* Dequeue the event. */ + midibuf_seqread(&sd->midi_dbuf_out, event, EV_SZ); + 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; + long *delay; + seqdev_info *sd; + mididev_info *md; + + sd = scp->devinfo; + unit = sd->unit; + + md = &midi_info[0]; + if (!MIDICONFED(md)) + return (MORE); + + switch(event[0]) { + case SEQ_NOTEOFF: + if ((md->flags & MIDI_F_BUSY) != 0 || seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) == 0) + if (md->synth.killnote(md, event[1], 255, event[3]) == EAGAIN) { + ret = QUEUEFULL; + break; + } + ret = MORE; + break; + case SEQ_NOTEON: + if (((md->flags & MIDI_F_BUSY) != 0 || seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) == 0) + && (event[4] < 128 || event[4] == 255)) + if (md->synth.startnote(md, event[1], event[2], event[3]) == EAGAIN) { + ret = QUEUEFULL; + break; + } + ret = MORE; + break; + case SEQ_WAIT: + + /* Extract the delay. */ + delay = (long *)event; + *delay = (*delay >> 8) & 0xffffff; + if (*delay > 0) { + /* Arm the timer. */ + sd->flags |= SEQ_F_WRITING; + scp->prev_event_time = *delay; + if (seq_requesttimer(scp, *delay)) { + ret = TIMERARMED; + break; + } + } + ret = MORE; + break; + case SEQ_PGMCHANGE: + if ((md->flags & MIDI_F_BUSY) != 0 || seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) == 0) + if (md->synth.setinstr(md, event[1], event[2]) == EAGAIN) { + ret = QUEUEFULL; + break; + } + 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: + /* Pass through to the midi device. */ + if (event[2] < nmidi + nsynth) { + md = &midi_info[event[2]]; + if (MIDICONFED(md) && ((md->flags & MIDI_F_BUSY) != 0 || seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) == 0)) { + if (md->synth.writeraw(md, &event[1], sizeof(event[1]), 1) == EAGAIN) { + /* The queue was full. Try again later. */ + ret = QUEUEFULL; + break; + } + } + } + ret = MORE; + break; + case SEQ_ECHO: + /* Echo this event back. */ + if (seq_copytoinput(scp, event, 4) == EAGAIN) { + ret = QUEUEFULL; + break; + } + ret = MORE; + break; + case SEQ_PRIVATE: + if (event[1] < nmidi + nsynth) { + md = &midi_info[event[1]]; + if (MIDICONFED(md) && md->synth.hwcontrol(md, event) == EAGAIN) { + ret = QUEUEFULL; + break; + } + } + 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: + /*DEB(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: + 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; + + /*DEB(printf("seq%d: requested timer at delay of %d.\n", unit, delay));*/ + + cur_time = seq_gettime(); + + if (delay < 0) + /* Request a new timer. */ + delay = -delay; + else { + rel_base = cur_time - scp->seq_time; + if (delay <= rel_base) + 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 */ + + scp->timeout_ch = timeout(seq_timer, (void *)scp, delay); + scp->timer_running = 1; + return 1; +} + +static void +seq_stoptimer(sc_p scp) +{ + /*DEB(printf("seq%d: stopping timer.\n", unit));*/ + + if (scp->timer_running) { + untimeout(seq_timer, (void *)scp, scp->timeout_ch); + scp->timer_running = 0; + } +} + +static void +seq_midiinput(sc_p scp, mididev_info *md) +{ + int unit, midiunit; + u_long tstamp; + u_char event[4]; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + /* Can this midi device interrupt for input? */ + midiunit = md->unit; + if (scp->midi_open[midiunit] + && (md->flags & MIDI_F_READING) != 0 + && md->intrarg == sd) + /* Read the input data. */ + while (md->synth.readraw(md, &event[1], sizeof(event[1]), 1) == 0) { + 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; + } + event[0] = SEQ_MIDIPUTC; + event[2] = midiunit; + event[3] = 0; + seq_copytoinput(scp, event, sizeof(event)); + } +} + +static int +seq_copytoinput(sc_p scp, u_char *event, int len) +{ + seqdev_info *sd; + + sd = scp->devinfo; + + if (midibuf_input_intr(&sd->midi_dbuf_in, event, len) == -EAGAIN) + return (EAGAIN); + + return (0); +} + +static int +seq_extended(sc_p scp, u_char *event) +{ + int unit; + seqdev_info *sd; + mididev_info *md; + + sd = scp->devinfo; + unit = sd->unit; + + if (event[2] >= nmidi + nsynth) + return (MORE); + md = &midi_info[event[2]]; + if (!MIDICONFED(md) && (md->flags & MIDI_F_BUSY) == 0 && seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) != 0) + return (MORE); + + switch (event[1]) { + case SEQ_NOTEOFF: + if (md->synth.killnote(md, event[3], event[4], event[5]) == EAGAIN) + return (QUEUEFULL); + break; + case SEQ_NOTEON: + if (event[4] < 128 || event[4] == 255) + if (md->synth.startnote(md, event[3], event[4], event[5]) == EAGAIN) + return (QUEUEFULL); + break; + case SEQ_PGMCHANGE: + if (md->synth.setinstr(md, event[3], event[4]) == EAGAIN) + return (QUEUEFULL); + break; + case SEQ_AFTERTOUCH: + if (md->synth.aftertouch(md, event[3], event[4]) == EAGAIN) + return (QUEUEFULL); + break; + case SEQ_BALANCE: + if (md->synth.panning(md, event[3], (char)event[4]) == EAGAIN) + return (QUEUEFULL); + break; + case SEQ_CONTROLLER: + if (md->synth.controller(md, event[3], event[4], *(short *)&event[5]) == EAGAIN) + return (QUEUEFULL); + break; + case SEQ_VOLMODE: + if (md->synth.volumemethod != NULL) + if (md->synth.volumemethod(md, event[3]) == EAGAIN) + return (QUEUEFULL); + 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; + + if (dev >= nmidi + nsynth) + return (MORE); + md = &midi_info[dev]; + if (!MIDICONFED(md) && (md->flags & MIDI_F_BUSY) == 0 && seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) != 0) + return (MORE); + +#if notyet + if (scp->seq_mode == SEQ_2) { + if (md->synth.allocvoice) + voice = seq_allocvoice(md, chn, note); + } +#endif /* notyet */ + switch (cmd) { + case MIDI_NOTEON: + if (note < 128 || note == 255) { +#if notyet + if (voice == -1 && scp->seq_mode == SEQ_2 && md->synth.allocvoice) + /* This is an internal synthesizer. (FM, GUS, etc) */ + if ((voice = seq_allocvoice(md, chn, note)) == -EAGAIN) + return (QUEUEFULL); +#endif /* notyet */ + if (voice == -1) + voice = chn; + +#if notyet + if (scp->seq_mode == SEQ_2 && dev < nmidi + nsynth && chn == 9) { + /* This channel is a percussion. The note number is the patch number. */ + if (md->synth.setinstr(md, voice, 128 + note) == EAGAIN) + return (QUEUEFULL); + note = 60; /* Middle C. */ + } + if (scp->seq_mode == SEQ_2) + if (md->synth.setupvoice(md, voice, chn) == EAGAIN) + return (QUEUEFULL); +#endif /* notyet */ + if (md->synth.startnote(md, voice, note, parm) == EAGAIN) + return (QUEUEFULL); + } + break; + case MIDI_NOTEOFF: + if (voice == -1) + voice = chn; + if (md->synth.killnote(md, voice, note, parm) == EAGAIN) + return (QUEUEFULL); + break; + case MIDI_KEY_PRESSURE: + if (voice == -1) + voice = chn; + if (md->synth.aftertouch(md, voice, parm) == EAGAIN) + return (QUEUEFULL); + break; + } + + return (MORE); +} + +static int +seq_findvoice(mididev_info *md, int chn, int note) +{ + int i; + u_short key; + + key = (chn << 8) | (note + 1); + + for (i = 0 ; i < md->synth.alloc.max_voice ; i++) + if (md->synth.alloc.map[i] == key) + return (i); + + return (-1); +} + +static int +seq_allocvoice(mididev_info *md, int chn, int note) +{ + int voice; + u_short key; + + key = (chn << 8) | (note + 1); + + if ((voice = md->synth.allocvoice(md, chn, note, &md->synth.alloc)) == -EAGAIN) + return (-EAGAIN); + md->synth.alloc.map[voice] = key; + md->synth.alloc.alloc_times[voice] = md->synth.alloc.timestamp++; + + 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; + + if (dev >= nmidi + nsynth) + return (MORE); + md = &midi_info[dev]; + if (!MIDICONFED(md) && (md->flags & MIDI_F_BUSY) == 0 && seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) != 0) + return (MORE); + + switch (cmd) { + case MIDI_PGM_CHANGE: +#if notyet + if (scp->seq_mode == SEQ_2) { + md->synth.chn_info[chn].pgm_num = p1; + if (dev < nmidi + nsynth) + if (md->synth.setinstr(md, chn, p1) == EAGAIN) + return (QUEUEFULL); + } else +#endif /* notyet */ + /* For Mode 1. */ + if (md->synth.setinstr(md, chn, p1) == EAGAIN) + return (QUEUEFULL); + break; + case MIDI_CTL_CHANGE: +#if notyet + if (scp->seq_mode == SEQ_2) { + if (chn < 16 && p1 < 128) { + 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 (dev < nmidi + nsynth) { + 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) + if (md->synth.controller(md, i, p1, val) == EAGAIN) + return (QUEUEFULL); + } else + if (md->synth.controller(md, chn, p1, w14) == EAGAIN) + return (QUEUEFULL); + } + } else +#endif /* notyet */ + /* For Mode 1. */ + if (md->synth.controller(md, chn, p1, w14) == EAGAIN) + return (QUEUEFULL); + break; + case MIDI_PITCH_BEND: +#if notyet + if (scp->seq_mode == SEQ_2) { + md->synth.chn_info[chn].bender_value = w14; + if (dev < nmidi + nsynth) { + /* 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) + if (md->synth.bender(md, i, w14) == EAGAIN) + return (QUEUEFULL); + } else + if (md->synth.bender(md, chn, w14) == EAGAIN) + return (QUEUEFULL); + } else +#endif /* notyet */ + /* For Mode 1. */ + if (md->synth.bender(md, chn, w14) == EAGAIN) + return (QUEUEFULL); + 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; + + parm = *(long *)&event[4]; + +#if notyet + if (scp->seq_mode == SEQ_2 && (ret = tmr->event(tmr_no, event)) == TIMERARMED) + return (ret); +#endif /* notyet */ + 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; + scp->prev_event_time = parm; + if (seq_requesttimer(scp, parm)) + return (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 notyet + if (scp->seq_mode == SEQ_2) + seq_copytoinput(scp, event, 8); + else { +#endif /* notyet */ + parm = (parm << 8 | SEQ_ECHO); + seq_copytoinput(scp, (u_char *)&parm, 4); +#if notyet + } +#endif /* notyet */ + break; + } + + return (MORE); +} + +static int +seq_local(sc_p scp, u_char *event) +{ + int unit; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + 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; + + if (event[1] >= nmidi + nsynth) + return (MORE); + md = &midi_info[event[1]]; + if (!MIDICONFED(md) || md->synth.sendsysex == NULL + || ((md->flags & MIDI_F_BUSY) == 0 && seq_openmidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc) != 0)) + return (MORE); + + l = 0; + for (i = 0 ; i < 6 && event[i + 2] != 0xff ; i++) + l = i + 1; + if (l > 0) + if (md->synth.sendsysex(md, &event[2], l) == EAGAIN) + return (QUEUEFULL); + + return (MORE); +} + +static void +seq_timer(void *arg) +{ + sc_p scp; + + scp = arg; + + /*DEB(printf("seq_timer: timer fired.\n"));*/ + + /* Record the current timestamp. */ + scp->prev_wakeup_time = seq_gettime(); + + seq_startplay(scp); +} + +static int +seq_openmidi(sc_p scp, mididev_info *md, int flags, int mode, struct proc *p) +{ + int midiunit, s, err; + + if (md == NULL || !MIDICONFED(md)) { + DEB(printf("seq_openmidi: midi device does not exist.\n")); + return (ENXIO); + } + midiunit = md->unit; + + DEB(printf("seq_openmidi: opening midi unit %d.\n", midiunit)); + + if (!scp->midi_open[midiunit]) { + err = midi_open(MIDIMKDEV(MIDI_CDEV_MAJOR, midiunit, SND_DEV_MIDIN), flags, mode, p); + if (err != 0) { + printf("seq_openmidi: failed to open midi device %d.\n", midiunit); + return (err); + } + s = splmidi(); + scp->midi_open[midiunit] = 1; + md->intr = seq_intr; + md->intrarg = scp->devinfo; + md->synth.prev_out_status = 0; + md->synth.sysex_state = 0; + splx(s); + } + + return (0); +} + +static int +seq_closemidi(sc_p scp, mididev_info *md, int flags, int mode, struct proc *p) +{ + int midiunit, s; + + if (md == NULL || !MIDICONFED(md)) { + DEB(printf("seq_closemidi: midi device does not exist.\n")); + return (ENXIO); + } + midiunit = md->unit; + + DEB(printf("seq_closemidi: closing midi unit %d.\n", midiunit)); + + if (scp->midi_open[midiunit]) { + midi_close(MIDIMKDEV(MIDI_CDEV_MAJOR, midiunit, SND_DEV_MIDIN), flags, mode, p); + s = splmidi(); + scp->midi_open[midiunit] = 0; + md->intr = NULL; + md->intrarg = NULL; + splx(s); + } + + return (0); +} + +static void +seq_panic(sc_p scp) +{ + seq_reset(scp); +} + +static int +seq_reset(sc_p scp) +{ + int unit, i, s, chn; + seqdev_info *sd; + mididev_info *md; + u_char c[3]; + + sd = scp->devinfo; + unit = sd->unit; + + s = splmidi(); + + /* Stop reading and writing. */ + sd->callback(sd, SEQ_CB_ABORT | SEQ_CB_RD | SEQ_CB_WR); + + /* Clear the queues. */ + midibuf_init(&sd->midi_dbuf_in); + midibuf_init(&sd->midi_dbuf_out); + +#if notyet + /* Reset the synthesizers. */ + for (i = 0 ; i < nmidi + nsynth ; i++) { + md = &midi_info[i]; + if (MIDICONFED(md) && scp->midi_open[i]) + md->synth.reset(md); + } +#endif /* notyet */ + +#if notyet + if (scp->seq_mode == SEQ_2) { + for (chn = 0 ; chn < 16 ; chn++) + for (i = 0 ; i < nmidi + nsynth ; i++) + if (midi_open[i]) { + md = &midi_info[i]; + if (!MIDICONFED(md)) + continue; + 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. */ + splx(s); + return (EAGAIN); + } + } + splx(s); + } else { +#endif /* notyet */ + splx(s); + for (i = 0 ; i < nmidi + nsynth ; i++) { + md = &midi_info[i]; + if (!MIDICONFED(md)) + continue; + + /* Send active sensing. */ + c[0] = 0xfe; /* Active Sensing. */ + if (md->synth.writeraw(md, c, 1, 0) == EAGAIN) + return (EAGAIN); + /* + * We need a sleep to reset a midi device using an active sensing. + * SC-88 resets after 420ms... + */ + tsleep(md, PRIBIO, "seqrst", 500 * hz / 1000); + for (chn = 0 ; chn < 16 ; chn++) { + c[0] = 0xb0 | (chn & 0x0f); + c[1] = (u_char)0x78; /* All sound off */ + c[2] = (u_char)0; + if (md->synth.writeraw(md, c, 3, 0) == EAGAIN) + return (EAGAIN); + c[1] = (u_char)0x7b; /* All note off */ + if (md->synth.writeraw(md, c, 3, 0) == EAGAIN) + return (EAGAIN); + c[1] = (u_char)0x79; /* Reset all controller */ + if (md->synth.writeraw(md, c, 3, 0) == EAGAIN) + return (EAGAIN); + } + } + for (i = 0 ; i < nmidi + nsynth ; i++){ + md = &midi_info[i]; + if (MIDICONFED(md)) + seq_closemidi(scp, md, scp->fflags, MIDIDEV_MODE, curproc); + } +#if notyet + } +#endif /* notyet */ + + return (0); +} + +static int +seq_sync(sc_p scp) +{ + int unit, s, i; + seqdev_info *sd; + + sd = scp->devinfo; + unit = sd->unit; + + s = splmidi(); + + if (sd->midi_dbuf_out.rl >= EV_SZ) + sd->callback(sd, SEQ_CB_START | SEQ_CB_WR); + + while ((sd->flags & SEQ_F_WRITING) != 0 && sd->midi_dbuf_out.rl >= EV_SZ) { + i = tsleep(&sd->midi_dbuf_out.tsleep_out, PRIBIO | PCATCH, "seqsnc", 0); + if (i == EINTR) + sd->callback(sd, SEQ_CB_STOP | SEQ_CB_WR); + if (i == EINTR || i == ERESTART) { + splx(s); + return (i); + } + } + splx(s); + + 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; + seqdev_info *d = NULL ; + + if (MIDIDEV(i_dev) != SND_DEV_SEQ && MIDIDEV(i_dev) != SND_DEV_SEQ2) + return NULL; + u = MIDIUNIT(i_dev); + if (unit) + *unit = u ; + + if (u >= NSEQ_MAX) { + DEB(printf("get_seqdev_info: unit %d is not configured.\n", u)); + return NULL; + } + d = &seq_info[u]; + + return d ; +} + +/* XXX These functions are actually redundant. */ +static int +seqopen(dev_t i_dev, int flags, int mode, struct proc * p) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + return seq_open(i_dev, flags, mode, p); + } + + return (ENXIO); +} + +static int +seqclose(dev_t i_dev, int flags, int mode, struct proc * p) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + return seq_close(i_dev, flags, mode, p); + } + + return (ENXIO); +} + +static int +seqread(dev_t i_dev, struct uio * buf, int flag) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + 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: + 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 proc * p) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + return seq_ioctl(i_dev, cmd, arg, mode, p); + } + + return (ENXIO); +} + +static int +seqpoll(dev_t i_dev, int events, struct proc * p) +{ + switch (MIDIDEV(i_dev)) { + case MIDI_DEV_SEQ: + return seq_poll(i_dev, events, p); + } + + 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); diff --git a/sys/dev/sound/midi/sequencer.h b/sys/dev/sound/midi/sequencer.h new file mode 100644 index 0000000..7275b77 --- /dev/null +++ b/sys/dev/sound/midi/sequencer.h @@ -0,0 +1,234 @@ +/* + * Include file for midi sequencer driver. + * + * Copyright by Seigo Tanimura 1999. + * + * 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. + * + * $FreeBSD$ + * + */ + +/* + * first, include kernel header files. + */ + +#ifndef _SEQUENCER_H_ +#define _SEQUENCER_H_ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/ioccom.h> + +#include <sys/filio.h> +#include <sys/sockio.h> +#include <sys/fcntl.h> +#include <sys/tty.h> +#include <sys/proc.h> + +#include <sys/kernel.h> /* for DATA_SET */ + +#include <sys/conf.h> +#include <sys/file.h> +#include <sys/uio.h> +#include <sys/syslog.h> +#include <sys/errno.h> +#include <sys/malloc.h> +#include <machine/clock.h> /* for DELAY */ +#include <sys/soundcard.h> + +#define SEQ_CDEV_MAJOR MIDI_CDEV_MAJOR + +/* + * the following assumes that FreeBSD 3.X uses poll(2) instead of select(2). + * This change dates to late 1997. + */ +#include <sys/poll.h> +#define d_select_t d_poll_t + +typedef struct _seqdev_info seqdev_info; + +typedef int (seq_callback_t)(seqdev_info *sd, int reason); + +/* + * descriptor of sequencer operations ... + * + */ + +struct _seqdev_info { + + /* + * the first part of the descriptor is filled up from a + * template. + */ + char name[64]; + + int type ; + + d_open_t *open; + d_close_t *close; + d_read_t *read; + d_write_t *write; + d_ioctl_t *ioctl; + d_poll_t *poll; + seq_callback_t *callback; + + /* + * combinations of the following flags are used as second argument in + * the callback from the dma module to the device-specific routines. + */ + +#define SEQ_CB_RD 0x100 /* read callback */ +#define SEQ_CB_WR 0x200 /* write callback */ +#define SEQ_CB_REASON_MASK 0xff +#define SEQ_CB_START 0x01 /* start dma op */ +#define SEQ_CB_STOP 0x03 /* stop dma op */ +#define SEQ_CB_ABORT 0x04 /* abort dma op */ +#define SEQ_CB_INIT 0x05 /* init board parameters */ + + /* + * callback extensions + */ +#define SEQ_CB_DMADONE 0x10 +#define SEQ_CB_DMAUPDATE 0x11 +#define SEQ_CB_DMASTOP 0x12 + + /* init can only be called with int enabled and + * no pending DMA activity. + */ + + /* + * whereas from here, parameters are set at runtime. + * io_base == 0 means that the board is not configured. + */ + + int unit; /* unit number of the device */ + void *softc; /* softc for a device */ + + int bd_id ; /* used to hold board-id info, eg. sb version, + * mss codec type, etc. etc. + */ + + midi_dbuf midi_dbuf_in; /* midi input event/message queue */ + midi_dbuf midi_dbuf_out; /* midi output event/message queue */ + + /* + * these parameters describe the operation of the board. + * Generic things like busy flag, speed, etc are here. + */ + + volatile u_long flags ; /* 32 bits, used for various purposes. */ + + /* + * we have separate flags for read and write, although in some + * cases this is probably not necessary (e.g. because we cannot + * know how many processes are using the device, we cannot + * distinguish if open, close, abort are for a write or for a + * read). + */ + + /* + * the following flag is used by open-close routines + * to mark the status of the device. + */ +#define SEQ_F_BUSY 0x0001 /* has been opened */ + /* + * the next two are used to allow only one pending operation of + * each type. + */ +#define SEQ_F_READING 0x0004 /* have a pending read */ +#define SEQ_F_WRITING 0x0008 /* have a pending write */ + + /* + * flag used to mark a pending close. + */ +#define SEQ_F_CLOSING 0x0040 /* a pending close */ + + /* + * if user has not set block size, then make it adaptive + * (0.25s, or the perhaps last read/write ?) + */ +#define SEQ_F_HAS_SIZE 0x0080 /* user set block size */ + /* + * assorted flags related to operating mode. + */ +#define SEQ_F_STEREO 0x0100 /* doing stereo */ +#define SEQ_F_NBIO 0x0200 /* do non-blocking i/o */ + + /* + * these flags mark a pending abort on a r/w operation. + */ +#define SEQ_F_ABORTING 0x1000 /* a pending abort */ + + /* + * this is used to mark that board initialization is needed, e.g. + * because of a change in sampling rate, format, etc. -- It will + * be done at the next convenient time. + */ +#define SEQ_F_INIT 0x4000 /* changed parameters. need init */ + + int play_blocksize, rec_blocksize; /* blocksize for io and dma ops */ + +#define swsel midi_dbuf_out.sel +#define srsel midi_dbuf_in.sel + u_long interrupts; /* counter of interrupts */ + u_long magic; +#define MAGIC(unit) ( 0xa4d10de0 + unit ) + void *device_data ; /* just in case it is needed...*/ +} ; + + +/* + * then ioctls and other stuff + */ +#define NSEQ_MAX 64 /* Number of supported devices */ + +/* + * many variables should be reduced to a range. Here define a macro + */ + +#define RANGE(var, low, high) (var) = \ +((var)<(low)?(low) : (var)>(high)?(high) : (var)) + +/* + * finally, all default parameters + */ +#define SEQ_BUFFSIZE (4 * 1024) /* XXX */ + +/* + * some macros for debugging purposes + * DDB/DEB to enable/disable debugging stuff + * BVDDB to enable debugging when bootverbose + */ +#define DDB(x) x /* XXX */ +#define BVDDB(x) if (bootverbose) x + +#ifndef DEB +#define DEB(x) +#endif + + extern seqdev_info seq_info[NSEQ_MAX] ; + +#define MIDI_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM + synthesizer and MIDI output) */ + +#endif /* _SEQUENCER_H_ */ |
