/* * Copyright (c) by Uros Bizjak * * Midi Sequencer interface routines for OPL2/OPL3/OPL4 FM * * OPL2/3 FM instrument loader: * alsa-tools/seq/sbiload/ * * 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 "opl3_voice.h" #include #include #include MODULE_AUTHOR("Uros Bizjak "); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("ALSA driver for OPL3 FM synth"); int use_internal_drums = 0; module_param(use_internal_drums, bool, 0444); MODULE_PARM_DESC(use_internal_drums, "Enable internal OPL2/3 drums."); int snd_opl3_synth_use_inc(struct snd_opl3 * opl3) { if (!try_module_get(opl3->card->module)) return -EFAULT; return 0; } void snd_opl3_synth_use_dec(struct snd_opl3 * opl3) { module_put(opl3->card->module); } int snd_opl3_synth_setup(struct snd_opl3 * opl3) { int idx; mutex_lock(&opl3->access_mutex); if (opl3->used) { mutex_unlock(&opl3->access_mutex); return -EBUSY; } opl3->used++; mutex_unlock(&opl3->access_mutex); snd_opl3_reset(opl3); for (idx = 0; idx < MAX_OPL3_VOICES; idx++) { opl3->voices[idx].state = SNDRV_OPL3_ST_OFF; opl3->voices[idx].time = 0; opl3->voices[idx].keyon_reg = 0x00; } opl3->use_time = 0; opl3->connection_reg = 0x00; if (opl3->hardware >= OPL3_HW_OPL3) { /* Clear 4-op connections */ opl3->command(opl3, OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT, opl3->connection_reg); opl3->max_voices = MAX_OPL3_VOICES; } return 0; } void snd_opl3_synth_cleanup(struct snd_opl3 * opl3) { unsigned long flags; /* Stop system timer */ spin_lock_irqsave(&opl3->sys_timer_lock, flags); if (opl3->sys_timer_status) { del_timer(&opl3->tlist); opl3->sys_timer_status = 0; } spin_unlock_irqrestore(&opl3->sys_timer_lock, flags); snd_opl3_reset(opl3); mutex_lock(&opl3->access_mutex); opl3->used--; mutex_unlock(&opl3->access_mutex); } static int snd_opl3_synth_use(void *private_data, struct snd_seq_port_subscribe * info) { struct snd_opl3 *opl3 = private_data; int err; if ((err = snd_opl3_synth_setup(opl3)) < 0) return err; if (use_internal_drums) { /* Percussion mode */ opl3->voices[6].state = opl3->voices[7].state = opl3->voices[8].state = SNDRV_OPL3_ST_NOT_AVAIL; snd_opl3_load_drums(opl3); opl3->drum_reg = OPL3_PERCUSSION_ENABLE; opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, opl3->drum_reg); } else { opl3->drum_reg = 0x00; } if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM) { if ((err = snd_opl3_synth_use_inc(opl3)) < 0) return err; } opl3->synth_mode = SNDRV_OPL3_MODE_SEQ; return 0; } static int snd_opl3_synth_unuse(void *private_data, struct snd_seq_port_subscribe * info) { struct snd_opl3 *opl3 = private_data; snd_opl3_synth_cleanup(opl3); if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM) snd_opl3_synth_use_dec(opl3); return 0; } /* * MIDI emulation operators */ struct snd_midi_op opl3_ops = { .note_on = snd_opl3_note_on, .note_off = snd_opl3_note_off, .key_press = snd_opl3_key_press, .note_terminate = snd_opl3_terminate_note, .control = snd_opl3_control, .nrpn = snd_opl3_nrpn, .sysex = snd_opl3_sysex, }; static int snd_opl3_synth_event_input(struct snd_seq_event * ev, int direct, void *private_data, int atomic, int hop) { struct snd_opl3 *opl3 = private_data; if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN && ev->type <= SNDRV_SEQ_EVENT_INSTR_CHANGE) { if (direct) { snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, ev, opl3->seq_client, atomic, hop); } } else { snd_midi_process_event(&opl3_ops, ev, opl3->chset); } return 0; } /* ------------------------------ */ static void snd_opl3_synth_free_port(void *private_data) { struct snd_opl3 *opl3 = private_data; snd_midi_channel_free_set(opl3->chset); } static int snd_opl3_synth_create_port(struct snd_opl3 * opl3) { struct snd_seq_port_callback callbacks; char name[32]; int voices, opl_ver; voices = (opl3->hardware < OPL3_HW_OPL3) ? MAX_OPL2_VOICES : MAX_OPL3_VOICES; opl3->chset = snd_midi_channel_alloc_set(16); if (opl3->chset == NULL) return -ENOMEM; opl3->chset->private_data = opl3; memset(&callbacks, 0, sizeof(callbacks)); callbacks.owner = THIS_MODULE; callbacks.use = snd_opl3_synth_use; callbacks.unuse = snd_opl3_synth_unuse; callbacks.event_input = snd_opl3_synth_event_input; callbacks.private_free = snd_opl3_synth_free_port; callbacks.private_data = opl3; opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8; sprintf(name, "OPL%i FM Port", opl_ver); opl3->chset->client = opl3->seq_client; opl3->chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks, SNDRV_SEQ_PORT_CAP_WRITE | SNDRV_SEQ_PORT_CAP_SUBS_WRITE, SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | SNDRV_SEQ_PORT_TYPE_MIDI_GM | SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE | SNDRV_SEQ_PORT_TYPE_HARDWARE | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER, 16, voices, name); if (opl3->chset->port < 0) { int port; port = opl3->chset->port; snd_midi_channel_free_set(opl3->chset); return port; } return 0; } /* ------------------------------ */ static int snd_opl3_seq_new_device(struct snd_seq_device *dev) { struct snd_opl3 *opl3; int client, err; char name[32]; int opl_ver; opl3 = *(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(dev); if (opl3 == NULL) return -EINVAL; spin_lock_init(&opl3->voice_lock); opl3->seq_client = -1; /* allocate new client */ opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8; sprintf(name, "OPL%i FM synth", opl_ver); client = opl3->seq_client = snd_seq_create_kernel_client(opl3->card, opl3->seq_dev_num, name); if (client < 0) return client; if ((err = snd_opl3_synth_create_port(opl3)) < 0) { snd_seq_delete_kernel_client(client); opl3->seq_client = -1; return err; } /* initialize instrument list */ opl3->ilist = snd_seq_instr_list_new(); if (opl3->ilist == NULL) { snd_seq_delete_kernel_client(client); opl3->seq_client = -1; return -ENOMEM; } opl3->ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT; snd_seq_fm_init(&opl3->fm_ops, NULL); /* setup system timer */ init_timer(&opl3->tlist); opl3->tlist.function = snd_opl3_timer_func; opl3->tlist.data = (unsigned long) opl3; spin_lock_init(&opl3->sys_timer_lock); opl3->sys_timer_status = 0; #ifdef CONFIG_SND_SEQUENCER_OSS snd_opl3_init_seq_oss(opl3, name); #endif return 0; } static int snd_opl3_seq_delete_device(struct snd_seq_device *dev) { struct snd_opl3 *opl3; opl3 = *(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(dev); if (opl3 == NULL) return -EINVAL; #ifdef CONFIG_SND_SEQUENCER_OSS snd_opl3_free_seq_oss(opl3); #endif if (opl3->seq_client >= 0) { snd_seq_delete_kernel_client(opl3->seq_client); opl3->seq_client = -1; } if (opl3->ilist) snd_seq_instr_list_free(&opl3->ilist); return 0; } static int __init alsa_opl3_seq_init(void) { static struct snd_seq_dev_ops ops = { snd_opl3_seq_new_device, snd_opl3_seq_delete_device }; return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_OPL3, &ops, sizeof(struct snd_opl3 *)); } static void __exit alsa_opl3_seq_exit(void) { snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_OPL3); } module_init(alsa_opl3_seq_init) module_exit(alsa_opl3_seq_exit)