315 lines
8.5 KiB
C
315 lines
8.5 KiB
C
/*
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* Routines for Gravis UltraSound soundcards - Synthesizer
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/driver.h>
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#include <linux/init.h>
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#include <linux/time.h>
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#include <sound/core.h>
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#include <sound/gus.h>
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#include <sound/seq_device.h>
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MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
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MODULE_DESCRIPTION("Routines for Gravis UltraSound soundcards - Synthesizer");
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MODULE_LICENSE("GPL");
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/*
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*
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*/
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static void snd_gus_synth_free_voices(struct snd_gus_card * gus, int client, int port)
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{
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int idx;
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struct snd_gus_voice * voice;
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for (idx = 0; idx < 32; idx++) {
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voice = &gus->gf1.voices[idx];
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if (voice->use && voice->client == client && voice->port == port)
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snd_gf1_free_voice(gus, voice);
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}
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}
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static int snd_gus_synth_use(void *private_data, struct snd_seq_port_subscribe *info)
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{
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struct snd_gus_port * port = private_data;
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struct snd_gus_card * gus = port->gus;
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struct snd_gus_voice * voice;
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unsigned int idx;
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if (info->voices > 32)
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return -EINVAL;
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mutex_lock(&gus->register_mutex);
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if (!snd_gus_use_inc(gus)) {
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mutex_unlock(&gus->register_mutex);
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return -EFAULT;
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}
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for (idx = 0; idx < info->voices; idx++) {
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voice = snd_gf1_alloc_voice(gus, SNDRV_GF1_VOICE_TYPE_SYNTH, info->sender.client, info->sender.port);
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if (voice == NULL) {
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snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port);
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snd_gus_use_dec(gus);
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mutex_unlock(&gus->register_mutex);
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return -EBUSY;
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}
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voice->index = idx;
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}
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mutex_unlock(&gus->register_mutex);
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return 0;
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}
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static int snd_gus_synth_unuse(void *private_data, struct snd_seq_port_subscribe *info)
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{
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struct snd_gus_port * port = private_data;
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struct snd_gus_card * gus = port->gus;
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mutex_lock(&gus->register_mutex);
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snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port);
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snd_gus_use_dec(gus);
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mutex_unlock(&gus->register_mutex);
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return 0;
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}
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/*
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*
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*/
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static void snd_gus_synth_free_private_instruments(struct snd_gus_port *p, int client)
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{
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struct snd_seq_instr_header ifree;
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memset(&ifree, 0, sizeof(ifree));
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ifree.cmd = SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE;
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snd_seq_instr_list_free_cond(p->gus->gf1.ilist, &ifree, client, 0);
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}
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static int snd_gus_synth_event_input(struct snd_seq_event *ev, int direct,
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void *private_data, int atomic, int hop)
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{
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struct snd_gus_port * p = private_data;
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snd_assert(p != NULL, return -EINVAL);
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if (ev->type >= SNDRV_SEQ_EVENT_SAMPLE &&
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ev->type <= SNDRV_SEQ_EVENT_SAMPLE_PRIVATE1) {
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snd_gus_sample_event(ev, p);
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return 0;
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}
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if (ev->source.client == SNDRV_SEQ_CLIENT_SYSTEM &&
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ev->source.port == SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE) {
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if (ev->type == SNDRV_SEQ_EVENT_CLIENT_EXIT) {
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snd_gus_synth_free_private_instruments(p, ev->data.addr.client);
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return 0;
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}
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}
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if (direct) {
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if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN) {
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snd_seq_instr_event(&p->gus->gf1.iwffff_ops.kops,
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p->gus->gf1.ilist,
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ev,
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p->gus->gf1.seq_client,
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atomic, hop);
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return 0;
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}
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}
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return 0;
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}
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static void snd_gus_synth_instr_notify(void *private_data,
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struct snd_seq_kinstr *instr,
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int what)
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{
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unsigned int idx;
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struct snd_gus_card *gus = private_data;
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struct snd_gus_voice *pvoice;
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unsigned long flags;
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spin_lock_irqsave(&gus->event_lock, flags);
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for (idx = 0; idx < 32; idx++) {
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pvoice = &gus->gf1.voices[idx];
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if (pvoice->use && !memcmp(&pvoice->instr, &instr->instr, sizeof(pvoice->instr))) {
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if (pvoice->sample_ops && pvoice->sample_ops->sample_stop) {
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pvoice->sample_ops->sample_stop(gus, pvoice, SAMPLE_STOP_IMMEDIATELY);
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} else {
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snd_gf1_stop_voice(gus, pvoice->number);
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pvoice->flags &= ~SNDRV_GF1_VFLG_RUNNING;
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}
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}
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}
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spin_unlock_irqrestore(&gus->event_lock, flags);
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}
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/*
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*
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*/
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static void snd_gus_synth_free_port(void *private_data)
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{
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struct snd_gus_port * p = private_data;
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if (p)
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snd_midi_channel_free_set(p->chset);
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}
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static int snd_gus_synth_create_port(struct snd_gus_card * gus, int idx)
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{
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struct snd_gus_port * p;
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struct snd_seq_port_callback callbacks;
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char name[32];
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int result;
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p = &gus->gf1.seq_ports[idx];
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p->chset = snd_midi_channel_alloc_set(16);
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if (p->chset == NULL)
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return -ENOMEM;
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p->chset->private_data = p;
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p->gus = gus;
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p->client = gus->gf1.seq_client;
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memset(&callbacks, 0, sizeof(callbacks));
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callbacks.owner = THIS_MODULE;
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callbacks.use = snd_gus_synth_use;
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callbacks.unuse = snd_gus_synth_unuse;
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callbacks.event_input = snd_gus_synth_event_input;
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callbacks.private_free = snd_gus_synth_free_port;
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callbacks.private_data = p;
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sprintf(name, "%s port %i", gus->interwave ? "AMD InterWave" : "GF1", idx);
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p->chset->port = snd_seq_event_port_attach(gus->gf1.seq_client,
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&callbacks,
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SNDRV_SEQ_PORT_CAP_WRITE | SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
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SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE |
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SNDRV_SEQ_PORT_TYPE_SYNTH |
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SNDRV_SEQ_PORT_TYPE_HARDWARE |
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SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
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16, 0,
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name);
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if (p->chset->port < 0) {
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result = p->chset->port;
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snd_gus_synth_free_port(p);
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return result;
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}
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p->port = p->chset->port;
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return 0;
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}
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/*
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*
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*/
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static int snd_gus_synth_new_device(struct snd_seq_device *dev)
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{
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struct snd_gus_card *gus;
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int client, i;
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struct snd_seq_port_subscribe sub;
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struct snd_iwffff_ops *iwops;
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struct snd_gf1_ops *gf1ops;
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struct snd_simple_ops *simpleops;
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gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
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if (gus == NULL)
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return -EINVAL;
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mutex_init(&gus->register_mutex);
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gus->gf1.seq_client = -1;
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/* allocate new client */
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client = gus->gf1.seq_client =
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snd_seq_create_kernel_client(gus->card, 1, gus->interwave ?
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"AMD InterWave" : "GF1");
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if (client < 0)
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return client;
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for (i = 0; i < 4; i++)
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snd_gus_synth_create_port(gus, i);
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gus->gf1.ilist = snd_seq_instr_list_new();
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if (gus->gf1.ilist == NULL) {
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snd_seq_delete_kernel_client(client);
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gus->gf1.seq_client = -1;
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return -ENOMEM;
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}
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gus->gf1.ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT;
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simpleops = &gus->gf1.simple_ops;
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snd_seq_simple_init(simpleops, gus, NULL);
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simpleops->put_sample = snd_gus_simple_put_sample;
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simpleops->get_sample = snd_gus_simple_get_sample;
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simpleops->remove_sample = snd_gus_simple_remove_sample;
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simpleops->notify = snd_gus_synth_instr_notify;
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gf1ops = &gus->gf1.gf1_ops;
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snd_seq_gf1_init(gf1ops, gus, &simpleops->kops);
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gf1ops->put_sample = snd_gus_gf1_put_sample;
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gf1ops->get_sample = snd_gus_gf1_get_sample;
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gf1ops->remove_sample = snd_gus_gf1_remove_sample;
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gf1ops->notify = snd_gus_synth_instr_notify;
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iwops = &gus->gf1.iwffff_ops;
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snd_seq_iwffff_init(iwops, gus, &gf1ops->kops);
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iwops->put_sample = snd_gus_iwffff_put_sample;
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iwops->get_sample = snd_gus_iwffff_get_sample;
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iwops->remove_sample = snd_gus_iwffff_remove_sample;
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iwops->notify = snd_gus_synth_instr_notify;
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memset(&sub, 0, sizeof(sub));
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sub.sender.client = SNDRV_SEQ_CLIENT_SYSTEM;
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sub.sender.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE;
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sub.dest.client = client;
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sub.dest.port = 0;
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snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &sub);
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return 0;
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}
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static int snd_gus_synth_delete_device(struct snd_seq_device *dev)
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{
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struct snd_gus_card *gus;
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gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
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if (gus == NULL)
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return -EINVAL;
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if (gus->gf1.seq_client >= 0) {
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snd_seq_delete_kernel_client(gus->gf1.seq_client);
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gus->gf1.seq_client = -1;
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}
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if (gus->gf1.ilist)
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snd_seq_instr_list_free(&gus->gf1.ilist);
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return 0;
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}
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static int __init alsa_gus_synth_init(void)
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{
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static struct snd_seq_dev_ops ops = {
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snd_gus_synth_new_device,
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snd_gus_synth_delete_device
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};
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return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_GUS, &ops,
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sizeof(struct snd_gus_card *));
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}
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static void __exit alsa_gus_synth_exit(void)
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{
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snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_GUS);
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}
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module_init(alsa_gus_synth_init)
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module_exit(alsa_gus_synth_exit)
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