sound/isa/gus/gus_synth.c

   1 /*
   2  *  Routines for Gravis UltraSound soundcards - Synthesizer
   3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <linux/time.h>
  25 #include <sound/core.h>
  26 #include <sound/gus.h>
  27 #include <sound/seq_device.h>
  28
  29 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  30 MODULE_DESCRIPTION("Routines for Gravis UltraSound soundcards - Synthesizer");
  31 MODULE_LICENSE("GPL");
  32
  33 /*
  34  *
  35  */
  36
  37 static void snd_gus_synth_free_voices(struct snd_gus_card * gus, int client, int port)
  38 {
  39         int idx;
  40         struct snd_gus_voice * voice;
  41
  42         for (idx = 0; idx < 32; idx++) {
  43                 voice = &gus->gf1.voices[idx];
  44                 if (voice->use && voice->client == client && voice->port == port)
  45                         snd_gf1_free_voice(gus, voice);
  46         }
  47 }
  48
  49 static int snd_gus_synth_use(void *private_data, struct snd_seq_port_subscribe *info)
  50 {
  51         struct snd_gus_port * port = private_data;
  52         struct snd_gus_card * gus = port->gus;
  53         struct snd_gus_voice * voice;
  54         unsigned int idx;
  55
  56         if (info->voices > 32)
  57                 return -EINVAL;
  58         mutex_lock(&gus->register_mutex);
  59         if (!snd_gus_use_inc(gus)) {
  60                 mutex_unlock(&gus->register_mutex);
  61                 return -EFAULT;
  62         }
  63         for (idx = 0; idx < info->voices; idx++) {
  64                 voice = snd_gf1_alloc_voice(gus, SNDRV_GF1_VOICE_TYPE_SYNTH, info->sender.client, info->sender.port);
  65                 if (voice == NULL) {
  66                         snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port);
  67                         snd_gus_use_dec(gus);
  68                         mutex_unlock(&gus->register_mutex);
  69                         return -EBUSY;
  70                 }
  71                 voice->index = idx;
  72         }
  73         mutex_unlock(&gus->register_mutex);
  74         return 0;
  75 }
  76
  77 static int snd_gus_synth_unuse(void *private_data, struct snd_seq_port_subscribe *info)
  78 {
  79         struct snd_gus_port * port = private_data;
  80         struct snd_gus_card * gus = port->gus;
  81
  82         mutex_lock(&gus->register_mutex);
  83         snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port);
  84         snd_gus_use_dec(gus);
  85         mutex_unlock(&gus->register_mutex);
  86         return 0;
  87 }
  88
  89 /*
  90  *
  91  */
  92
  93 static void snd_gus_synth_free_private_instruments(struct snd_gus_port *p, int client)
  94 {
  95         struct snd_seq_instr_header ifree;
  96
  97         memset(&ifree, 0, sizeof(ifree));
  98         ifree.cmd = SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE;
  99         snd_seq_instr_list_free_cond(p->gus->gf1.ilist, &ifree, client, 0);
 100 }
 101
 102 static int snd_gus_synth_event_input(struct snd_seq_event *ev, int direct,
 103                                      void *private_data, int atomic, int hop)
 104 {
 105         struct snd_gus_port * p = private_data;
 106
 107         snd_assert(p != NULL, return -EINVAL);
 108         if (ev->type >= SNDRV_SEQ_EVENT_SAMPLE &&
 109             ev->type <= SNDRV_SEQ_EVENT_SAMPLE_PRIVATE1) {
 110                 snd_gus_sample_event(ev, p);
 111                 return 0;
 112         }
 113         if (ev->source.client == SNDRV_SEQ_CLIENT_SYSTEM &&
 114             ev->source.port == SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE) {
 115                 if (ev->type == SNDRV_SEQ_EVENT_CLIENT_EXIT) {
 116                         snd_gus_synth_free_private_instruments(p, ev->data.addr.client);
 117                         return 0;
 118                 }
 119         }
 120         if (direct) {
 121                 if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN) {
 122                         snd_seq_instr_event(&p->gus->gf1.iwffff_ops.kops,
 123                                             p->gus->gf1.ilist,
 124                                             ev,
 125                                             p->gus->gf1.seq_client,
 126                                             atomic, hop);
 127                         return 0;
 128                 }
 129         }
 130         return 0;
 131 }
 132
 133 static void snd_gus_synth_instr_notify(void *private_data,
 134                                        struct snd_seq_kinstr *instr,
 135                                        int what)
 136 {
 137         unsigned int idx;
 138         struct snd_gus_card *gus = private_data;
 139         struct snd_gus_voice *pvoice;
 140         unsigned long flags;
 141
 142         spin_lock_irqsave(&gus->event_lock, flags);
 143         for (idx = 0; idx < 32; idx++) {
 144                 pvoice = &gus->gf1.voices[idx];
 145                 if (pvoice->use && !memcmp(&pvoice->instr, &instr->instr, sizeof(pvoice->instr))) {
 146                         if (pvoice->sample_ops && pvoice->sample_ops->sample_stop) {
 147                                 pvoice->sample_ops->sample_stop(gus, pvoice, SAMPLE_STOP_IMMEDIATELY);
 148                         } else {
 149                                 snd_gf1_stop_voice(gus, pvoice->number);
 150                                 pvoice->flags &= ~SNDRV_GF1_VFLG_RUNNING;
 151                         }
 152                 }
 153         }
 154         spin_unlock_irqrestore(&gus->event_lock, flags);
 155 }
 156
 157 /*
 158  *
 159  */
 160
 161 static void snd_gus_synth_free_port(void *private_data)
 162 {
 163         struct snd_gus_port * p = private_data;
 164
 165         if (p)
 166                 snd_midi_channel_free_set(p->chset);
 167 }
 168
 169 static int snd_gus_synth_create_port(struct snd_gus_card * gus, int idx)
 170 {
 171         struct snd_gus_port * p;
 172         struct snd_seq_port_callback callbacks;
 173         char name[32];
 174         int result;
 175
 176         p = &gus->gf1.seq_ports[idx];
 177         p->chset = snd_midi_channel_alloc_set(16);
 178         if (p->chset == NULL)
 179                 return -ENOMEM;
 180         p->chset->private_data = p;
 181         p->gus = gus;
 182         p->client = gus->gf1.seq_client;
 183
 184         memset(&callbacks, 0, sizeof(callbacks));
 185         callbacks.owner = THIS_MODULE;
 186         callbacks.use = snd_gus_synth_use;
 187         callbacks.unuse = snd_gus_synth_unuse;
 188         callbacks.event_input = snd_gus_synth_event_input;
 189         callbacks.private_free = snd_gus_synth_free_port;
 190         callbacks.private_data = p;
 191
 192         sprintf(name, "%s port %i", gus->interwave ? "AMD InterWave" : "GF1", idx);
 193         p->chset->port = snd_seq_event_port_attach(gus->gf1.seq_client,
 194                                                    &callbacks,
 195                                                    SNDRV_SEQ_PORT_CAP_WRITE | SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
 196                                                    SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE |
 197                                                    SNDRV_SEQ_PORT_TYPE_SYNTH |
 198                                                    SNDRV_SEQ_PORT_TYPE_HARDWARE |
 199                                                    SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
 200                                                    16, 0,
 201                                                    name);
 202         if (p->chset->port < 0) {
 203                 result = p->chset->port;
 204                 snd_gus_synth_free_port(p);
 205                 return result;
 206         }
 207         p->port = p->chset->port;
 208         return 0;
 209 }
 210
 211 /*
 212  *
 213  */
 214
 215 static int snd_gus_synth_new_device(struct snd_seq_device *dev)
 216 {
 217         struct snd_gus_card *gus;
 218         int client, i;
 219         struct snd_seq_port_subscribe sub;
 220         struct snd_iwffff_ops *iwops;
 221         struct snd_gf1_ops *gf1ops;
 222         struct snd_simple_ops *simpleops;
 223
 224         gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
 225         if (gus == NULL)
 226                 return -EINVAL;
 227
 228         mutex_init(&gus->register_mutex);
 229         gus->gf1.seq_client = -1;
 230
 231         /* allocate new client */
 232         client = gus->gf1.seq_client =
 233                 snd_seq_create_kernel_client(gus->card, 1, gus->interwave ?
 234                                              "AMD InterWave" : "GF1");
 235         if (client < 0)
 236                 return client;
 237
 238         for (i = 0; i < 4; i++)
 239                 snd_gus_synth_create_port(gus, i);
 240
 241         gus->gf1.ilist = snd_seq_instr_list_new();
 242         if (gus->gf1.ilist == NULL) {
 243                 snd_seq_delete_kernel_client(client);
 244                 gus->gf1.seq_client = -1;
 245                 return -ENOMEM;
 246         }
 247         gus->gf1.ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT;
 248
 249         simpleops = &gus->gf1.simple_ops;
 250         snd_seq_simple_init(simpleops, gus, NULL);
 251         simpleops->put_sample = snd_gus_simple_put_sample;
 252         simpleops->get_sample = snd_gus_simple_get_sample;
 253         simpleops->remove_sample = snd_gus_simple_remove_sample;
 254         simpleops->notify = snd_gus_synth_instr_notify;
 255
 256         gf1ops = &gus->gf1.gf1_ops;
 257         snd_seq_gf1_init(gf1ops, gus, &simpleops->kops);
 258         gf1ops->put_sample = snd_gus_gf1_put_sample;
 259         gf1ops->get_sample = snd_gus_gf1_get_sample;
 260         gf1ops->remove_sample = snd_gus_gf1_remove_sample;
 261         gf1ops->notify = snd_gus_synth_instr_notify;
 262
 263         iwops = &gus->gf1.iwffff_ops;
 264         snd_seq_iwffff_init(iwops, gus, &gf1ops->kops);
 265         iwops->put_sample = snd_gus_iwffff_put_sample;
 266         iwops->get_sample = snd_gus_iwffff_get_sample;
 267         iwops->remove_sample = snd_gus_iwffff_remove_sample;
 268         iwops->notify = snd_gus_synth_instr_notify;
 269
 270         memset(&sub, 0, sizeof(sub));
 271         sub.sender.client = SNDRV_SEQ_CLIENT_SYSTEM;
 272         sub.sender.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE;
 273         sub.dest.client = client;
 274         sub.dest.port = 0;
 275         snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &sub);
 276
 277         return 0;
 278 }
 279
 280 static int snd_gus_synth_delete_device(struct snd_seq_device *dev)
 281 {
 282         struct snd_gus_card *gus;
 283
 284         gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
 285         if (gus == NULL)
 286                 return -EINVAL;
 287
 288         if (gus->gf1.seq_client >= 0) {
 289                 snd_seq_delete_kernel_client(gus->gf1.seq_client);
 290                 gus->gf1.seq_client = -1;
 291         }
 292         if (gus->gf1.ilist)
 293                 snd_seq_instr_list_free(&gus->gf1.ilist);
 294         return 0;
 295 }
 296
 297 static int __init alsa_gus_synth_init(void)
 298 {
 299         static struct snd_seq_dev_ops ops = {
 300                 snd_gus_synth_new_device,
 301                 snd_gus_synth_delete_device
 302         };
 303
 304         return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_GUS, &ops,
 305                                               sizeof(struct snd_gus_card *));
 306 }
 307
 308 static void __exit alsa_gus_synth_exit(void)
 309 {
 310         snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_GUS);
 311 }
 312
 313 module_init(alsa_gus_synth_init)
 314 module_exit(alsa_gus_synth_exit)