1. 根目录:
2. sound
3. oss
4. midi_synth.h

int midi_synth_ioctl (int dev,
	    unsigned int cmd, void __user * arg);
int midi_synth_kill_note (int dev, int channel, int note, int velocity);
int midi_synth_set_instr (int dev, int channel, int instr_no);
int midi_synth_start_note (int dev, int channel, int note, int volume);
void midi_synth_reset (int dev);
int midi_synth_open (int dev, int mode);
void midi_synth_close (int dev);
void midi_synth_hw_control (int dev, unsigned char *event);
int midi_synth_load_patch (int dev, int format, const char __user * addr,
		 int count, int pmgr_flag);
void midi_synth_panning (int dev, int channel, int pressure);
void midi_synth_aftertouch (int dev, int channel, int pressure);
void midi_synth_controller (int dev, int channel, int ctrl_num, int value);
void midi_synth_bender (int dev, int chn, int value);
void midi_synth_setup_voice (int dev, int voice, int chn);
int midi_synth_send_sysex(int dev, unsigned char *bytes,int len);

#ifndef _MIDI_SYNTH_C_
static struct synth_info std_synth_info =
{MIDI_SYNTH_NAME, 0, SYNTH_TYPE_MIDI, 0, 0, 128, 0, 128, MIDI_SYNTH_CAPS};

static struct synth_operations std_midi_synth =
{
	.owner		= THIS_MODULE,
	.id		= "MIDI",
	.info		= &std_synth_info,
	.midi_dev	= 0,
	.synth_type	= SYNTH_TYPE_MIDI,
	.synth_subtype	= 0,
	.open		= midi_synth_open,
	.close		= midi_synth_close,
	.ioctl		= midi_synth_ioctl,
	.kill_note	= midi_synth_kill_note,
	.start_note	= midi_synth_start_note,
	.set_instr	= midi_synth_set_instr,
	.reset		= midi_synth_reset,
	.hw_control	= midi_synth_hw_control,
	.load_patch	= midi_synth_load_patch,
	.aftertouch	= midi_synth_aftertouch,
	.controller	= midi_synth_controller,
	.panning		= midi_synth_panning,
	.bender		= midi_synth_bender,
	.setup_voice	= midi_synth_setup_voice,
	.send_sysex	= midi_synth_send_sysex
};
#endif