diff options
Diffstat (limited to 'sound/isa/gus/gus_sample.c')
| -rw-r--r-- | sound/isa/gus/gus_sample.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/sound/isa/gus/gus_sample.c b/sound/isa/gus/gus_sample.c new file mode 100644 index 00000000000..4290e03acd5 --- /dev/null +++ b/sound/isa/gus/gus_sample.c @@ -0,0 +1,155 @@ +/* + * 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(snd_gus_card_t * gus, snd_gus_voice_t * v) +{ + snd_seq_kinstr_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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)(snd_seq_event_t *ev, snd_gus_port_t *p, snd_gus_voice_t *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(snd_seq_event_t *ev, snd_gus_port_t *p) +{ + int idx, voice; + snd_gus_card_t *gus = p->gus; + snd_gus_voice_t *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; + } + } +} |