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TOMOYO Linux Cross Reference
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 #include <sound/seq_oss.h>
 29 #include <sound/emux_legacy.h>
 30 #include <sound/seq_virmidi.h>
 31 
 32 /*
 33  * compile flags
 34  */
 35 #define SNDRV_EMUX_USE_RAW_EFFECT
 36 
 37 struct snd_emux;
 38 struct snd_emux_port;
 39 struct snd_emux_voice;
 40 struct snd_emux_effect_table;
 41 
 42 /*
 43  * operators
 44  */
 45 struct snd_emux_operators {
 46         struct module *owner;
 47         struct snd_emux_voice *(*get_voice)(struct snd_emux *emu,
 48                                             struct snd_emux_port *port);
 49         int (*prepare)(struct snd_emux_voice *vp);
 50         void (*trigger)(struct snd_emux_voice *vp);
 51         void (*release)(struct snd_emux_voice *vp);
 52         void (*update)(struct snd_emux_voice *vp, int update);
 53         void (*terminate)(struct snd_emux_voice *vp);
 54         void (*free_voice)(struct snd_emux_voice *vp);
 55         void (*reset)(struct snd_emux *emu, int ch);
 56         /* the first parameters are struct snd_emux */
 57         int (*sample_new)(struct snd_emux *emu, struct snd_sf_sample *sp,
 58                           struct snd_util_memhdr *hdr,
 59                           const void __user *data, long count);
 60         int (*sample_free)(struct snd_emux *emu, struct snd_sf_sample *sp,
 61                            struct snd_util_memhdr *hdr);
 62         void (*sample_reset)(struct snd_emux *emu);
 63         int (*load_fx)(struct snd_emux *emu, int type, int arg,
 64                        const void __user *data, long count);
 65         void (*sysex)(struct snd_emux *emu, char *buf, int len, int parsed,
 66                       struct snd_midi_channel_set *chset);
 67 #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
 68         int (*oss_ioctl)(struct snd_emux *emu, int cmd, int p1, int p2);
 69 #endif
 70 };
 71 
 72 
 73 /*
 74  * constant values
 75  */
 76 #define SNDRV_EMUX_MAX_PORTS            32      /* max # of sequencer ports */
 77 #define SNDRV_EMUX_MAX_VOICES           64      /* max # of voices */
 78 #define SNDRV_EMUX_MAX_MULTI_VOICES     16      /* max # of playable voices
 79                                                  * simultineously
 80                                                  */
 81 
 82 /*
 83  * flags
 84  */
 85 #define SNDRV_EMUX_ACCEPT_ROM           (1<<0)
 86 
 87 /*
 88  * emuX wavetable
 89  */
 90 struct snd_emux {
 91 
 92         struct snd_card *card;  /* assigned card */
 93 
 94         /* following should be initialized before registration */
 95         int max_voices;         /* Number of voices */
 96         int mem_size;           /* memory size (in byte) */
 97         int num_ports;          /* number of ports to be created */
 98         int pitch_shift;        /* pitch shift value (for Emu10k1) */
 99         struct snd_emux_operators ops;  /* operators */
100         void *hw;               /* hardware */
101         unsigned long flags;    /* other conditions */
102         int midi_ports;         /* number of virtual midi devices */
103         int midi_devidx;        /* device offset of virtual midi */
104         unsigned int linear_panning: 1; /* panning is linear (sbawe = 1, emu10k1 = 0) */
105         int hwdep_idx;          /* hwdep device index */
106         struct snd_hwdep *hwdep;        /* hwdep device */
107 
108         /* private */
109         int num_voices;         /* current number of voices */
110         struct snd_sf_list *sflist;     /* root of SoundFont list */
111         struct snd_emux_voice *voices;  /* Voices (EMU 'channel') */
112         int use_time;   /* allocation counter */
113         spinlock_t voice_lock;  /* Lock for voice access */
114         struct mutex register_mutex;
115         int client;             /* For the sequencer client */
116         int ports[SNDRV_EMUX_MAX_PORTS];        /* The ports for this device */
117         struct snd_emux_port *portptrs[SNDRV_EMUX_MAX_PORTS];
118         int used;       /* use counter */
119         char *name;     /* name of the device (internal) */
120         struct snd_rawmidi **vmidi;
121         struct timer_list tlist;        /* for pending note-offs */
122         int timer_active;
123 
124         struct snd_util_memhdr *memhdr; /* memory chunk information */
125 
126 #ifdef CONFIG_SND_PROC_FS
127         struct snd_info_entry *proc;
128 #endif
129 
130 #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
131         struct snd_seq_device *oss_synth;
132 #endif
133 };
134 
135 
136 /*
137  * sequencer port information
138  */
139 struct snd_emux_port {
140 
141         struct snd_midi_channel_set chset;
142         struct snd_emux *emu;
143 
144         char port_mode;                 /* operation mode */
145         int volume_atten;               /* emuX raw attenuation */
146         unsigned long drum_flags;       /* drum bitmaps */
147         int ctrls[EMUX_MD_END];         /* control parameters */
148 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
149         struct snd_emux_effect_table *effect;
150 #endif
151 #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
152         struct snd_seq_oss_arg *oss_arg;
153 #endif
154 };
155 
156 /* port_mode */
157 #define SNDRV_EMUX_PORT_MODE_MIDI               0       /* normal MIDI port */
158 #define SNDRV_EMUX_PORT_MODE_OSS_SYNTH  1       /* OSS synth port */
159 #define SNDRV_EMUX_PORT_MODE_OSS_MIDI   2       /* OSS multi channel synth port */
160 
161 /*
162  * A structure to keep track of each hardware voice
163  */
164 struct snd_emux_voice {
165         int  ch;                /* Hardware channel number */
166 
167         int  state;             /* status */
168 #define SNDRV_EMUX_ST_OFF               0x00    /* Not playing, and inactive */
169 #define SNDRV_EMUX_ST_ON                0x01    /* Note on */
170 #define SNDRV_EMUX_ST_RELEASED  (0x02|SNDRV_EMUX_ST_ON) /* Note released */
171 #define SNDRV_EMUX_ST_SUSTAINED (0x04|SNDRV_EMUX_ST_ON) /* Note sustained */
172 #define SNDRV_EMUX_ST_STANDBY   (0x08|SNDRV_EMUX_ST_ON) /* Waiting to be triggered */
173 #define SNDRV_EMUX_ST_PENDING   (0x10|SNDRV_EMUX_ST_ON) /* Note will be released */
174 #define SNDRV_EMUX_ST_LOCKED            0x100   /* Not accessible */
175 
176         unsigned int  time;     /* An allocation time */
177         unsigned char note;     /* Note currently assigned to this voice */
178         unsigned char key;
179         unsigned char velocity; /* Velocity of current note */
180 
181         struct snd_sf_zone *zone;       /* Zone assigned to this note */
182         void *block;            /* sample block pointer (optional) */
183         struct snd_midi_channel *chan;  /* Midi channel for this note */
184         struct snd_emux_port *port;     /* associated port */
185         struct snd_emux *emu;   /* assigned root info */
186         void *hw;               /* hardware pointer (emu8000 or emu10k1) */
187         unsigned long ontime;   /* jiffies at note triggered */
188         
189         /* Emu8k/Emu10k1 registers */
190         struct soundfont_voice_info reg;
191 
192         /* additional registers */
193         int avol;               /* volume attenuation */
194         int acutoff;            /* cutoff target */
195         int apitch;             /* pitch offset */
196         int apan;               /* pan/aux pair */
197         int aaux;
198         int ptarget;            /* pitch target */
199         int vtarget;            /* volume target */
200         int ftarget;            /* filter target */
201 
202 };
203 
204 /*
205  * update flags (can be combined)
206  */
207 #define SNDRV_EMUX_UPDATE_VOLUME                (1<<0)
208 #define SNDRV_EMUX_UPDATE_PITCH         (1<<1)
209 #define SNDRV_EMUX_UPDATE_PAN           (1<<2)
210 #define SNDRV_EMUX_UPDATE_FMMOD         (1<<3)
211 #define SNDRV_EMUX_UPDATE_TREMFREQ      (1<<4)
212 #define SNDRV_EMUX_UPDATE_FM2FRQ2               (1<<5)
213 #define SNDRV_EMUX_UPDATE_Q             (1<<6)
214 
215 
216 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
217 /*
218  * effect table
219  */
220 struct snd_emux_effect_table {
221         /* Emu8000 specific effects */
222         short val[EMUX_NUM_EFFECTS];
223         unsigned char flag[EMUX_NUM_EFFECTS];
224 };
225 #endif /* SNDRV_EMUX_USE_RAW_EFFECT */
226 
227 
228 /*
229  * prototypes - interface to Emu10k1 and Emu8k routines
230  */
231 int snd_emux_new(struct snd_emux **remu);
232 int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name);
233 int snd_emux_free(struct snd_emux *emu);
234 
235 /*
236  * exported functions
237  */
238 void snd_emux_terminate_all(struct snd_emux *emu);
239 void snd_emux_lock_voice(struct snd_emux *emu, int voice);
240 void snd_emux_unlock_voice(struct snd_emux *emu, int voice);
241 
242 #endif /* __SOUND_EMUX_SYNTH_H */
243 

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