gus_synth.c 8.93 KB
Newer Older
Linus Torvalds's avatar
Linus Torvalds committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
/*
 *  Routines for Gravis UltraSound soundcards - Synthesizer
 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <sound/driver.h>
#include <linux/init.h>
#include <linux/time.h>
#include <sound/core.h>
#include <sound/gus.h>
#include <sound/seq_device.h>

MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Routines for Gravis UltraSound soundcards - Synthesizer");
MODULE_LICENSE("GPL");

/*
 *
 */

37
static void snd_gus_synth_free_voices(struct snd_gus_card * gus, int client, int port)
Linus Torvalds's avatar
Linus Torvalds committed
38 39
{
	int idx;
40
	struct snd_gus_voice * voice;
Linus Torvalds's avatar
Linus Torvalds committed
41 42 43 44 45 46 47 48
	
	for (idx = 0; idx < 32; idx++) {
		voice = &gus->gf1.voices[idx];
		if (voice->use && voice->client == client && voice->port == port)
			snd_gf1_free_voice(gus, voice);
	}
}

49
static int snd_gus_synth_use(void *private_data, struct snd_seq_port_subscribe *info)
Linus Torvalds's avatar
Linus Torvalds committed
50
{
51 52 53
	struct snd_gus_port * port = private_data;
	struct snd_gus_card * gus = port->gus;
	struct snd_gus_voice * voice;
Linus Torvalds's avatar
Linus Torvalds committed
54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
	unsigned int idx;

	if (info->voices > 32)
		return -EINVAL;
	down(&gus->register_mutex);
	if (!snd_gus_use_inc(gus)) {
		up(&gus->register_mutex);
		return -EFAULT;
	}
	for (idx = 0; idx < info->voices; idx++) {
		voice = snd_gf1_alloc_voice(gus, SNDRV_GF1_VOICE_TYPE_SYNTH, info->sender.client, info->sender.port);
		if (voice == NULL) {
			snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port);
			snd_gus_use_dec(gus);
			up(&gus->register_mutex);
			return -EBUSY;
		}
		voice->index = idx;
	}
	up(&gus->register_mutex);
	return 0;
}

77
static int snd_gus_synth_unuse(void *private_data, struct snd_seq_port_subscribe *info)
Linus Torvalds's avatar
Linus Torvalds committed
78
{
79 80
	struct snd_gus_port * port = private_data;
	struct snd_gus_card * gus = port->gus;
Linus Torvalds's avatar
Linus Torvalds committed
81 82 83 84 85 86 87 88 89 90 91 92

	down(&gus->register_mutex);
	snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port);
	snd_gus_use_dec(gus);
	up(&gus->register_mutex);
	return 0;
}

/*
 *
 */

93
static void snd_gus_synth_free_private_instruments(struct snd_gus_port *p, int client)
Linus Torvalds's avatar
Linus Torvalds committed
94
{
95
	struct snd_seq_instr_header ifree;
Linus Torvalds's avatar
Linus Torvalds committed
96 97 98 99 100 101

	memset(&ifree, 0, sizeof(ifree));
	ifree.cmd = SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE;
	snd_seq_instr_list_free_cond(p->gus->gf1.ilist, &ifree, client, 0);
}
 
102
static int snd_gus_synth_event_input(struct snd_seq_event *ev, int direct,
Adrian Bunk's avatar
Adrian Bunk committed
103
				     void *private_data, int atomic, int hop)
Linus Torvalds's avatar
Linus Torvalds committed
104
{
105
	struct snd_gus_port * p = private_data;
Linus Torvalds's avatar
Linus Torvalds committed
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133
	
	snd_assert(p != NULL, return -EINVAL);
	if (ev->type >= SNDRV_SEQ_EVENT_SAMPLE &&
	    ev->type <= SNDRV_SEQ_EVENT_SAMPLE_PRIVATE1) {
		snd_gus_sample_event(ev, p);
		return 0;
	}
	if (ev->source.client == SNDRV_SEQ_CLIENT_SYSTEM &&
	    ev->source.port == SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE) {
		if (ev->type == SNDRV_SEQ_EVENT_CLIENT_EXIT) {
			snd_gus_synth_free_private_instruments(p, ev->data.addr.client);
			return 0;
		}
	}
	if (direct) {
		if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN) {
			snd_seq_instr_event(&p->gus->gf1.iwffff_ops.kops,
					    p->gus->gf1.ilist,
					    ev,
					    p->gus->gf1.seq_client,
					    atomic, hop);
			return 0;
		}
	}
	return 0;
}

static void snd_gus_synth_instr_notify(void *private_data,
134
				       struct snd_seq_kinstr *instr,
Linus Torvalds's avatar
Linus Torvalds committed
135 136 137
				       int what)
{
	unsigned int idx;
138 139
	struct snd_gus_card *gus = private_data;
	struct snd_gus_voice *pvoice;
Linus Torvalds's avatar
Linus Torvalds committed
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162
	unsigned long flags;
	
	spin_lock_irqsave(&gus->event_lock, flags);
	for (idx = 0; idx < 32; idx++) {
		pvoice = &gus->gf1.voices[idx];
		if (pvoice->use && !memcmp(&pvoice->instr, &instr->instr, sizeof(pvoice->instr))) {
			if (pvoice->sample_ops && pvoice->sample_ops->sample_stop) {
				pvoice->sample_ops->sample_stop(gus, pvoice, SAMPLE_STOP_IMMEDIATELY);
			} else {
				snd_gf1_stop_voice(gus, pvoice->number);
				pvoice->flags &= ~SNDRV_GF1_VFLG_RUNNING;
			}
		}
	}
	spin_unlock_irqrestore(&gus->event_lock, flags);
}

/*
 *
 */

static void snd_gus_synth_free_port(void *private_data)
{
163
	struct snd_gus_port * p = private_data;
Linus Torvalds's avatar
Linus Torvalds committed
164 165 166 167 168
	
	if (p)
		snd_midi_channel_free_set(p->chset);
}

169
static int snd_gus_synth_create_port(struct snd_gus_card * gus, int idx)
Linus Torvalds's avatar
Linus Torvalds committed
170
{
171 172
	struct snd_gus_port * p;
	struct snd_seq_port_callback callbacks;
Linus Torvalds's avatar
Linus Torvalds committed
173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212
	char name[32];
	int result;
	
	p = &gus->gf1.seq_ports[idx];
	p->chset = snd_midi_channel_alloc_set(16);
	if (p->chset == NULL)
		return -ENOMEM;
	p->chset->private_data = p;
	p->gus = gus;
	p->client = gus->gf1.seq_client;

	memset(&callbacks, 0, sizeof(callbacks));
	callbacks.owner = THIS_MODULE;
	callbacks.use = snd_gus_synth_use;
	callbacks.unuse = snd_gus_synth_unuse;
	callbacks.event_input = snd_gus_synth_event_input;
	callbacks.private_free = snd_gus_synth_free_port;
	callbacks.private_data = p;
	
	sprintf(name, "%s port %i", gus->interwave ? "AMD InterWave" : "GF1", idx);
	p->chset->port = snd_seq_event_port_attach(gus->gf1.seq_client,
						   &callbacks,
						   SNDRV_SEQ_PORT_CAP_WRITE | SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
						   SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE |
						   SNDRV_SEQ_PORT_TYPE_SYNTH,
						   16, 0,
						   name);
	if (p->chset->port < 0) {
		result = p->chset->port;
		snd_gus_synth_free_port(p);
		return result;
	}
	p->port = p->chset->port;
	return 0;
}						 

/*
 *
 */

213
static int snd_gus_synth_new_device(struct snd_seq_device *dev)
Linus Torvalds's avatar
Linus Torvalds committed
214
{
215
	struct snd_gus_card *gus;
Linus Torvalds's avatar
Linus Torvalds committed
216
	int client, i;
217 218 219 220 221 222 223 224
	struct snd_seq_client_callback callbacks;
	struct snd_seq_client_info *cinfo;
	struct snd_seq_port_subscribe sub;
	struct snd_iwffff_ops *iwops;
	struct snd_gf1_ops *gf1ops;
	struct snd_simple_ops *simpleops;

	gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
Linus Torvalds's avatar
Linus Torvalds committed
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295
	if (gus == NULL)
		return -EINVAL;

	init_MUTEX(&gus->register_mutex);
	gus->gf1.seq_client = -1;
	
	cinfo = kmalloc(sizeof(*cinfo), GFP_KERNEL);
	if (! cinfo)
		return -ENOMEM;

	/* allocate new client */
	memset(&callbacks, 0, sizeof(callbacks));
	callbacks.private_data = gus;
	callbacks.allow_output = callbacks.allow_input = 1;
	client = gus->gf1.seq_client =
			snd_seq_create_kernel_client(gus->card, 1, &callbacks);
	if (client < 0) {
		kfree(cinfo);
		return client;
	}

	/* change name of client */
	memset(cinfo, 0, sizeof(*cinfo));
	cinfo->client = client;
	cinfo->type = KERNEL_CLIENT;
	sprintf(cinfo->name, gus->interwave ? "AMD InterWave" : "GF1");
	snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SET_CLIENT_INFO, cinfo);
	kfree(cinfo);

	for (i = 0; i < 4; i++)
		snd_gus_synth_create_port(gus, i);
		
	gus->gf1.ilist = snd_seq_instr_list_new();
	if (gus->gf1.ilist == NULL) {
		snd_seq_delete_kernel_client(client);	
		gus->gf1.seq_client = -1;
		return -ENOMEM;
	}
	gus->gf1.ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT;

	simpleops = &gus->gf1.simple_ops;
	snd_seq_simple_init(simpleops, gus, NULL);
	simpleops->put_sample = snd_gus_simple_put_sample;
	simpleops->get_sample = snd_gus_simple_get_sample;
	simpleops->remove_sample = snd_gus_simple_remove_sample;
	simpleops->notify = snd_gus_synth_instr_notify;

	gf1ops = &gus->gf1.gf1_ops;
	snd_seq_gf1_init(gf1ops, gus, &simpleops->kops);
	gf1ops->put_sample = snd_gus_gf1_put_sample;
	gf1ops->get_sample = snd_gus_gf1_get_sample;
	gf1ops->remove_sample = snd_gus_gf1_remove_sample;
	gf1ops->notify = snd_gus_synth_instr_notify;

	iwops = &gus->gf1.iwffff_ops;
	snd_seq_iwffff_init(iwops, gus, &gf1ops->kops);
	iwops->put_sample = snd_gus_iwffff_put_sample;
	iwops->get_sample = snd_gus_iwffff_get_sample;
	iwops->remove_sample = snd_gus_iwffff_remove_sample;
	iwops->notify = snd_gus_synth_instr_notify;

	memset(&sub, 0, sizeof(sub));
	sub.sender.client = SNDRV_SEQ_CLIENT_SYSTEM;
	sub.sender.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE;
	sub.dest.client = client;
	sub.dest.port = 0;
	snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &sub);

	return 0;
}

296
static int snd_gus_synth_delete_device(struct snd_seq_device *dev)
Linus Torvalds's avatar
Linus Torvalds committed
297
{
298
	struct snd_gus_card *gus;
Linus Torvalds's avatar
Linus Torvalds committed
299

300
	gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
Linus Torvalds's avatar
Linus Torvalds committed
301 302 303 304 305 306 307 308 309 310 311 312 313 314
	if (gus == NULL)
		return -EINVAL;

	if (gus->gf1.seq_client >= 0) {
		snd_seq_delete_kernel_client(gus->gf1.seq_client);	
		gus->gf1.seq_client = -1;
	}
	if (gus->gf1.ilist)
		snd_seq_instr_list_free(&gus->gf1.ilist);
	return 0;
}

static int __init alsa_gus_synth_init(void)
{
315
	static struct snd_seq_dev_ops ops = {
Linus Torvalds's avatar
Linus Torvalds committed
316 317 318 319 320
		snd_gus_synth_new_device,
		snd_gus_synth_delete_device
	};

	return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_GUS, &ops,
321
					      sizeof(struct snd_gus_card *));
Linus Torvalds's avatar
Linus Torvalds committed
322 323 324 325 326 327 328 329 330
}

static void __exit alsa_gus_synth_exit(void)
{
	snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_GUS);
}

module_init(alsa_gus_synth_init)
module_exit(alsa_gus_synth_exit)