hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
linux-sg2042/sound/isa/gus/gus_synth.c

331 lines
8.8 KiB
C
Raw Blame History

/*
* 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);
}
static 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)
Reference in New Issue View Git Blame Copy Permalink