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Diffstat (limited to 'sys/dev/sound/midi/sequencer.h')
| -rw-r--r-- | sys/dev/sound/midi/sequencer.h | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/sys/dev/sound/midi/sequencer.h b/sys/dev/sound/midi/sequencer.h new file mode 100644 index 0000000..c5db264 --- /dev/null +++ b/sys/dev/sound/midi/sequencer.h @@ -0,0 +1,272 @@ +/* + * 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 <sys/condvar.h> +#include <machine/clock.h> /* for DELAY */ +#include <sys/soundcard.h> + +#include <dev/sound/midi/timer.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 + +/* Return value from seq_playevent and timer event handers. */ +enum { + MORE, + TIMERARMED, + QUEUEFULL +}; + +typedef struct _seqdev_info seqdev_info; + +/* + * The order of mutex lock (from the first to the last) + * + * 1. sequencer flags, queues, timer and device list + * 2. midi synth voice and channel + * 3. midi synth status + * 4. generic midi flags and queues + * 5. midi device + */ + +/* + * 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; + 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 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. + */ + + struct mtx flagqueue_mtx; /* Mutex to protect flags and queues */ + struct cv insync_cv; /* Conditional variable for sync */ + + /* Queues */ + 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. + */ + + /* Flags */ + 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 */ + +#define SEQ_F_INSYNC 0x8000 /* a pending sync */ + + 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...*/ + + /* The tailq entry of the next sequencer device. */ + TAILQ_ENTRY(_seqdev_info) sd_link; +}; + + +/* + * then ioctls and other stuff + */ +#define NSEQ_MAX 16 /* 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 (1024) /* XXX */ + +#define MIDI_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM + synthesizer and MIDI output) */ +#define MIDI_DEV_MUSIC 8 /* Sequencer output /dev/music (FM + synthesizer and MIDI output) */ + +#ifdef _KERNEL + +extern midi_cmdtab cmdtab_seqioctl[]; +extern midi_cmdtab cmdtab_timer[]; + +void seq_timer(void *arg); +int seq_copytoinput(void *arg, u_char *event, int len); + +SYSCTL_DECL(_hw_midi_seq); + +extern int seq_debug; +#define SEQ_DEBUG(x) \ + do { \ + if (seq_debug) { \ + (x); \ + } \ + } while(0) + +#endif /* _KERNEL */ + + +#endif /* _SEQUENCER_H_ */ |
