1 files changed, 329 insertions, 0 deletions
diff --git a/sound/isa/gus/gus_synth.c b/sound/isa/gus/gus_synth.c
new file mode 100644
index 00000000000..66552e6013a
--- /dev/null
+++ b/sound/isa/gus/gus_synth.c
@@ -0,0 +1,329 @@
+/*
+ *  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");
+
+/*
+ *
+ */
+
+static void snd_gus_synth_free_voices(snd_gus_card_t * gus, int client, int port)
+{
+	int idx;
+	snd_gus_voice_t * voice;
+	
+	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);
+	}
+}
+
+static int snd_gus_synth_use(void *private_data, snd_seq_port_subscribe_t *info)
+{
+	snd_gus_port_t * port = (snd_gus_port_t *)private_data;
+	snd_gus_card_t * gus = port->gus;
+	snd_gus_voice_t * voice;
+	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;
+}
+
+static int snd_gus_synth_unuse(void *private_data, snd_seq_port_subscribe_t *info)
+{
+	snd_gus_port_t * port = (snd_gus_port_t *)private_data;
+	snd_gus_card_t * gus = port->gus;
+
+	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;
+}
+
+/*
+ *
+ */
+
+static void snd_gus_synth_free_private_instruments(snd_gus_port_t *p, int client)
+{
+	snd_seq_instr_header_t ifree;
+
+	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);
+}
+ 
+int snd_gus_synth_event_input(snd_seq_event_t *ev, int direct, void *private_data, int atomic, int hop)
+{
+	snd_gus_port_t * p = (snd_gus_port_t *) private_data;
+	
+	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,
+				       snd_seq_kinstr_t *instr,
+				       int what)
+{
+	unsigned int idx;
+	snd_gus_card_t *gus = private_data;
+	snd_gus_voice_t *pvoice;
+	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)
+{
+	snd_gus_port_t * p = (snd_gus_port_t *)private_data;
+	
+	if (p)
+		snd_midi_channel_free_set(p->chset);
+}
+
+static int snd_gus_synth_create_port(snd_gus_card_t * gus, int idx)
+{
+	snd_gus_port_t * p;
+	snd_seq_port_callback_t callbacks;
+	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;
+}						 
+
+/*
+ *
+ */
+
+static int snd_gus_synth_new_device(snd_seq_device_t *dev)
+{
+	snd_gus_card_t *gus;
+	int client, i;
+	snd_seq_client_callback_t callbacks;
+	snd_seq_client_info_t *cinfo;
+	snd_seq_port_subscribe_t sub;
+	snd_iwffff_ops_t *iwops;
+	snd_gf1_ops_t *gf1ops;
+	snd_simple_ops_t *simpleops;
+
+	gus = *(snd_gus_card_t**)SNDRV_SEQ_DEVICE_ARGPTR(dev);
+	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;
+}
+
+static int snd_gus_synth_delete_device(snd_seq_device_t *dev)
+{
+	snd_gus_card_t *gus;
+
+	gus = *(snd_gus_card_t**)SNDRV_SEQ_DEVICE_ARGPTR(dev);
+	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)
+{
+	static snd_seq_dev_ops_t ops = {
+		snd_gus_synth_new_device,
+		snd_gus_synth_delete_device
+	};
+
+	return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_GUS, &ops,
+					      sizeof(snd_gus_card_t*));
+}
+
+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)