FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/midi/midisynth.h

     /*
      * 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: releng/5.0/sys/dev/sound/midi/midisynth.h 88773 2002-01-01 17:36:26Z tanimura $
     *
     */
    
    #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 *lenr, int nonblock);
    typedef int (mdsy_writeraw_t)(mididev_info *md, u_char *buf, int len, int *lenw, int nonblock);
    
    /*
     * The order of mutex lock (from the first to the last)
     *
     * 1. sequencer flags, queues, timer and devlice list
     * 2. midi synth voice and channel
     * 3. midi synth status
     * 4. generic midi flags and queues
     * 5. midi device
     */
    
    /* 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;
   
           /* Voice and channel */
           struct mtx vc_mtx; /* Mutex to protect voice and channel. */
           struct voice_alloc_info alloc; /* Voice allocation. */
           struct channel_info chn_info[16]; /* Channel information. */
   
           /* Status */
           struct mtx status_mtx; /* Mutex to protect status. */
           int sysex_state; /* State of sysex transmission. */
   };
   typedef struct _synthdev_info synthdev_info;

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