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/*
* Routines for Gravis UltraSound soundcards - Sample support
* 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/time.h>
#include <sound/core.h>
#include <sound/gus.h>
/*
*
*/
static void select_instrument(struct snd_gus_card * gus, struct snd_gus_voice * v)
{
struct snd_seq_kinstr *instr;
#if 0
printk("select instrument: cluster = %li, std = 0x%x, bank = %i, prg = %i\n",
v->instr.cluster,
v->instr.std,
v->instr.bank,
v->instr.prg);
#endif
instr = snd_seq_instr_find(gus->gf1.ilist, &v->instr, 0, 1);
if (instr != NULL) {
if (instr->ops) {
if (!strcmp(instr->ops->instr_type, SNDRV_SEQ_INSTR_ID_SIMPLE))
snd_gf1_simple_init(v);
}
snd_seq_instr_free_use(gus->gf1.ilist, instr);
}
}
/*
*
*/
static void event_sample(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_stop)
v->sample_ops->sample_stop(p->gus, v, SAMPLE_STOP_IMMEDIATELY);
v->instr.std = ev->data.sample.param.sample.std;
if (v->instr.std & 0xff000000) { /* private instrument */
v->instr.std &= 0x00ffffff;
v->instr.std |= (unsigned int)ev->source.client << 24;
}
v->instr.bank = ev->data.sample.param.sample.bank;
v->instr.prg = ev->data.sample.param.sample.prg;
select_instrument(p->gus, v);
}
static void event_cluster(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_stop)
v->sample_ops->sample_stop(p->gus, v, SAMPLE_STOP_IMMEDIATELY);
v->instr.cluster = ev->data.sample.param.cluster.cluster;
select_instrument(p->gus, v);
}
static void event_start(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_start)
v->sample_ops->sample_start(p->gus, v, ev->data.sample.param.position);
}
static void event_stop(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_stop)
v->sample_ops->sample_stop(p->gus, v, ev->data.sample.param.stop_mode);
}
static void event_freq(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_freq)
v->sample_ops->sample_freq(p->gus, v, ev->data.sample.param.frequency);
}
static void event_volume(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_volume)
v->sample_ops->sample_volume(p->gus, v, &ev->data.sample.param.volume);
}
static void event_loop(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_loop)
v->sample_ops->sample_loop(p->gus, v, &ev->data.sample.param.loop);
}
static void event_position(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_pos)
v->sample_ops->sample_pos(p->gus, v, ev->data.sample.param.position);
}
static void event_private1(struct snd_seq_event *ev, struct snd_gus_port *p,
struct snd_gus_voice *v)
{
if (v->sample_ops && v->sample_ops->sample_private1)
v->sample_ops->sample_private1(p->gus, v, (unsigned char *)&ev->data.sample.param.raw8);
}
typedef void (gus_sample_event_handler_t)(struct snd_seq_event *ev,
struct snd_gus_port *p,
struct snd_gus_voice *v);
static gus_sample_event_handler_t *gus_sample_event_handlers[9] = {
event_sample,
event_cluster,
event_start,
event_stop,
event_freq,
event_volume,
event_loop,
event_position,
event_private1
};
void snd_gus_sample_event(struct snd_seq_event *ev, struct snd_gus_port *p)
{
int idx, voice;
struct snd_gus_card *gus = p->gus;
struct snd_gus_voice *v;
unsigned long flags;
idx = ev->type - SNDRV_SEQ_EVENT_SAMPLE;
if (idx < 0 || idx > 8)
return;
for (voice = 0; voice < 32; voice++) {
v = &gus->gf1.voices[voice];
if (v->use && v->client == ev->source.client &&
v->port == ev->source.port &&
v->index == ev->data.sample.channel) {
spin_lock_irqsave(&gus->event_lock, flags);
gus_sample_event_handlers[idx](ev, p, v);
spin_unlock_irqrestore(&gus->event_lock, flags);
return;
}
}
}
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