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Linux/include/sound/emux_synth.h

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  1 #ifndef __SOUND_EMUX_SYNTH_H
  2 #define __SOUND_EMUX_SYNTH_H
  3 
  4 /*
  5  *  Defines for the Emu-series WaveTable chip
  6  *
  7  *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
  8  *
  9  *   This program is free software; you can redistribute it and/or modify
 10  *   it under the terms of the GNU General Public License as published by
 11  *   the Free Software Foundation; either version 2 of the License, or
 12  *   (at your option) any later version.
 13  *
 14  *   This program is distributed in the hope that it will be useful,
 15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 17  *   GNU General Public License for more details.
 18  *
 19  *   You should have received a copy of the GNU General Public License
 20  *   along with this program; if not, write to the Free Software
 21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 22  */
 23 
 24 #include <sound/seq_kernel.h>
 25 #include <sound/seq_device.h>
 26 #include <sound/soundfont.h>
 27 #include <sound/seq_midi_emul.h>
 28 #ifdef CONFIG_SND_SEQUENCER_OSS
 29 #include <sound/seq_oss.h>
 30 #endif
 31 #include <sound/emux_legacy.h>
 32 #include <sound/seq_virmidi.h>
 33 
 34 /*
 35  * compile flags
 36  */
 37 #define SNDRV_EMUX_USE_RAW_EFFECT
 38 
 39 struct snd_emux;
 40 struct snd_emux_port;
 41 struct snd_emux_voice;
 42 struct snd_emux_effect_table;
 43 
 44 /*
 45  * operators
 46  */
 47 struct snd_emux_operators {
 48         struct module *owner;
 49         struct snd_emux_voice *(*get_voice)(struct snd_emux *emu,
 50                                             struct snd_emux_port *port);
 51         int (*prepare)(struct snd_emux_voice *vp);
 52         void (*trigger)(struct snd_emux_voice *vp);
 53         void (*release)(struct snd_emux_voice *vp);
 54         void (*update)(struct snd_emux_voice *vp, int update);
 55         void (*terminate)(struct snd_emux_voice *vp);
 56         void (*free_voice)(struct snd_emux_voice *vp);
 57         void (*reset)(struct snd_emux *emu, int ch);
 58         /* the first parameters are struct snd_emux */
 59         int (*sample_new)(struct snd_emux *emu, struct snd_sf_sample *sp,
 60                           struct snd_util_memhdr *hdr,
 61                           const void __user *data, long count);
 62         int (*sample_free)(struct snd_emux *emu, struct snd_sf_sample *sp,
 63                            struct snd_util_memhdr *hdr);
 64         void (*sample_reset)(struct snd_emux *emu);
 65         int (*load_fx)(struct snd_emux *emu, int type, int arg,
 66                        const void __user *data, long count);
 67         void (*sysex)(struct snd_emux *emu, char *buf, int len, int parsed,
 68                       struct snd_midi_channel_set *chset);
 69 #ifdef CONFIG_SND_SEQUENCER_OSS
 70         int (*oss_ioctl)(struct snd_emux *emu, int cmd, int p1, int p2);
 71 #endif
 72 };
 73 
 74 
 75 /*
 76  * constant values
 77  */
 78 #define SNDRV_EMUX_MAX_PORTS            32      /* max # of sequencer ports */
 79 #define SNDRV_EMUX_MAX_VOICES           64      /* max # of voices */
 80 #define SNDRV_EMUX_MAX_MULTI_VOICES     16      /* max # of playable voices
 81                                                  * simultineously
 82                                                  */
 83 
 84 /*
 85  * flags
 86  */
 87 #define SNDRV_EMUX_ACCEPT_ROM           (1<<0)
 88 
 89 /*
 90  * emuX wavetable
 91  */
 92 struct snd_emux {
 93 
 94         struct snd_card *card;  /* assigned card */
 95 
 96         /* following should be initialized before registration */
 97         int max_voices;         /* Number of voices */
 98         int mem_size;           /* memory size (in byte) */
 99         int num_ports;          /* number of ports to be created */
100         int pitch_shift;        /* pitch shift value (for Emu10k1) */
101         struct snd_emux_operators ops;  /* operators */
102         void *hw;               /* hardware */
103         unsigned long flags;    /* other conditions */
104         int midi_ports;         /* number of virtual midi devices */
105         int midi_devidx;        /* device offset of virtual midi */
106         unsigned int linear_panning: 1; /* panning is linear (sbawe = 1, emu10k1 = 0) */
107         int hwdep_idx;          /* hwdep device index */
108         struct snd_hwdep *hwdep;        /* hwdep device */
109 
110         /* private */
111         int num_voices;         /* current number of voices */
112         struct snd_sf_list *sflist;     /* root of SoundFont list */
113         struct snd_emux_voice *voices;  /* Voices (EMU 'channel') */
114         int use_time;   /* allocation counter */
115         spinlock_t voice_lock;  /* Lock for voice access */
116         struct mutex register_mutex;
117         int client;             /* For the sequencer client */
118         int ports[SNDRV_EMUX_MAX_PORTS];        /* The ports for this device */
119         struct snd_emux_port *portptrs[SNDRV_EMUX_MAX_PORTS];
120         int used;       /* use counter */
121         char *name;     /* name of the device (internal) */
122         struct snd_rawmidi **vmidi;
123         struct timer_list tlist;        /* for pending note-offs */
124         int timer_active;
125 
126         struct snd_util_memhdr *memhdr; /* memory chunk information */
127 
128 #ifdef CONFIG_PROC_FS
129         struct snd_info_entry *proc;
130 #endif
131 
132 #ifdef CONFIG_SND_SEQUENCER_OSS
133         struct snd_seq_device *oss_synth;
134 #endif
135 };
136 
137 
138 /*
139  * sequencer port information
140  */
141 struct snd_emux_port {
142 
143         struct snd_midi_channel_set chset;
144         struct snd_emux *emu;
145 
146         char port_mode;                 /* operation mode */
147         int volume_atten;               /* emuX raw attenuation */
148         unsigned long drum_flags;       /* drum bitmaps */
149         int ctrls[EMUX_MD_END];         /* control parameters */
150 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
151         struct snd_emux_effect_table *effect;
152 #endif
153 #ifdef CONFIG_SND_SEQUENCER_OSS
154         struct snd_seq_oss_arg *oss_arg;
155 #endif
156 };
157 
158 /* port_mode */
159 #define SNDRV_EMUX_PORT_MODE_MIDI               0       /* normal MIDI port */
160 #define SNDRV_EMUX_PORT_MODE_OSS_SYNTH  1       /* OSS synth port */
161 #define SNDRV_EMUX_PORT_MODE_OSS_MIDI   2       /* OSS multi channel synth port */
162 
163 /*
164  * A structure to keep track of each hardware voice
165  */
166 struct snd_emux_voice {
167         int  ch;                /* Hardware channel number */
168 
169         int  state;             /* status */
170 #define SNDRV_EMUX_ST_OFF               0x00    /* Not playing, and inactive */
171 #define SNDRV_EMUX_ST_ON                0x01    /* Note on */
172 #define SNDRV_EMUX_ST_RELEASED  (0x02|SNDRV_EMUX_ST_ON) /* Note released */
173 #define SNDRV_EMUX_ST_SUSTAINED (0x04|SNDRV_EMUX_ST_ON) /* Note sustained */
174 #define SNDRV_EMUX_ST_STANDBY   (0x08|SNDRV_EMUX_ST_ON) /* Waiting to be triggered */
175 #define SNDRV_EMUX_ST_PENDING   (0x10|SNDRV_EMUX_ST_ON) /* Note will be released */
176 #define SNDRV_EMUX_ST_LOCKED            0x100   /* Not accessible */
177 
178         unsigned int  time;     /* An allocation time */
179         unsigned char note;     /* Note currently assigned to this voice */
180         unsigned char key;
181         unsigned char velocity; /* Velocity of current note */
182 
183         struct snd_sf_zone *zone;       /* Zone assigned to this note */
184         void *block;            /* sample block pointer (optional) */
185         struct snd_midi_channel *chan;  /* Midi channel for this note */
186         struct snd_emux_port *port;     /* associated port */
187         struct snd_emux *emu;   /* assigned root info */
188         void *hw;               /* hardware pointer (emu8000 or emu10k1) */
189         unsigned long ontime;   /* jiffies at note triggered */
190         
191         /* Emu8k/Emu10k1 registers */
192         struct soundfont_voice_info reg;
193 
194         /* additional registers */
195         int avol;               /* volume attenuation */
196         int acutoff;            /* cutoff target */
197         int apitch;             /* pitch offset */
198         int apan;               /* pan/aux pair */
199         int aaux;
200         int ptarget;            /* pitch target */
201         int vtarget;            /* volume target */
202         int ftarget;            /* filter target */
203 
204 };
205 
206 /*
207  * update flags (can be combined)
208  */
209 #define SNDRV_EMUX_UPDATE_VOLUME                (1<<0)
210 #define SNDRV_EMUX_UPDATE_PITCH         (1<<1)
211 #define SNDRV_EMUX_UPDATE_PAN           (1<<2)
212 #define SNDRV_EMUX_UPDATE_FMMOD         (1<<3)
213 #define SNDRV_EMUX_UPDATE_TREMFREQ      (1<<4)
214 #define SNDRV_EMUX_UPDATE_FM2FRQ2               (1<<5)
215 #define SNDRV_EMUX_UPDATE_Q             (1<<6)
216 
217 
218 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
219 /*
220  * effect table
221  */
222 struct snd_emux_effect_table {
223         /* Emu8000 specific effects */
224         short val[EMUX_NUM_EFFECTS];
225         unsigned char flag[EMUX_NUM_EFFECTS];
226 };
227 #endif /* SNDRV_EMUX_USE_RAW_EFFECT */
228 
229 
230 /*
231  * prototypes - interface to Emu10k1 and Emu8k routines
232  */
233 int snd_emux_new(struct snd_emux **remu);
234 int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name);
235 int snd_emux_free(struct snd_emux *emu);
236 
237 /*
238  * exported functions
239  */
240 void snd_emux_terminate_all(struct snd_emux *emu);
241 void snd_emux_lock_voice(struct snd_emux *emu, int voice);
242 void snd_emux_unlock_voice(struct snd_emux *emu, int voice);
243 
244 #endif /* __SOUND_EMUX_SYNTH_H */
245 

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