1 /* 2 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> 3 * 4 * Routines for control of EMU WaveTable chip 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21 #include <sound/driver.h> 22 #include <linux/wait.h> 23 #include <linux/sched.h> 24 #include <linux/slab.h> 25 #include <linux/string.h> 26 #include <sound/core.h> 27 #include <sound/emux_synth.h> 28 #include <linux/init.h> 29 #include "emux_voice.h" 30 31 MODULE_AUTHOR("Takashi Iwai"); 32 MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip"); 33 MODULE_LICENSE("GPL"); 34 35 /* 36 * create a new hardware dependent device for Emu8000/Emu10k1 37 */ 38 int snd_emux_new(struct snd_emux **remu) 39 { 40 struct snd_emux *emu; 41 42 *remu = NULL; 43 emu = kzalloc(sizeof(*emu), GFP_KERNEL); 44 if (emu == NULL) 45 return -ENOMEM; 46 47 spin_lock_init(&emu->voice_lock); 48 mutex_init(&emu->register_mutex); 49 50 emu->client = -1; 51 #ifdef CONFIG_SND_SEQUENCER_OSS 52 emu->oss_synth = NULL; 53 #endif 54 emu->max_voices = 0; 55 emu->use_time = 0; 56 57 init_timer(&emu->tlist); 58 emu->tlist.function = snd_emux_timer_callback; 59 emu->tlist.data = (unsigned long)emu; 60 emu->timer_active = 0; 61 62 *remu = emu; 63 return 0; 64 } 65 66 67 /* 68 */ 69 static int sf_sample_new(void *private_data, struct snd_sf_sample *sp, 70 struct snd_util_memhdr *hdr, 71 const void __user *buf, long count) 72 { 73 struct snd_emux *emu = private_data; 74 return emu->ops.sample_new(emu, sp, hdr, buf, count); 75 76 } 77 78 static int sf_sample_free(void *private_data, struct snd_sf_sample *sp, 79 struct snd_util_memhdr *hdr) 80 { 81 struct snd_emux *emu = private_data; 82 return emu->ops.sample_free(emu, sp, hdr); 83 84 } 85 86 static void sf_sample_reset(void *private_data) 87 { 88 struct snd_emux *emu = private_data; 89 emu->ops.sample_reset(emu); 90 } 91 92 int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name) 93 { 94 int err; 95 struct snd_sf_callback sf_cb; 96 97 snd_assert(emu->hw != NULL, return -EINVAL); 98 snd_assert(emu->max_voices > 0, return -EINVAL); 99 snd_assert(card != NULL, return -EINVAL); 100 snd_assert(name != NULL, return -EINVAL); 101 102 emu->card = card; 103 emu->name = kstrdup(name, GFP_KERNEL); 104 emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice), 105 GFP_KERNEL); 106 if (emu->voices == NULL) 107 return -ENOMEM; 108 109 /* create soundfont list */ 110 memset(&sf_cb, 0, sizeof(sf_cb)); 111 sf_cb.private_data = emu; 112 if (emu->ops.sample_new) 113 sf_cb.sample_new = sf_sample_new; 114 if (emu->ops.sample_free) 115 sf_cb.sample_free = sf_sample_free; 116 if (emu->ops.sample_reset) 117 sf_cb.sample_reset = sf_sample_reset; 118 emu->sflist = snd_sf_new(&sf_cb, emu->memhdr); 119 if (emu->sflist == NULL) 120 return -ENOMEM; 121 122 if ((err = snd_emux_init_hwdep(emu)) < 0) 123 return err; 124 125 snd_emux_init_voices(emu); 126 127 snd_emux_init_seq(emu, card, index); 128 #ifdef CONFIG_SND_SEQUENCER_OSS 129 snd_emux_init_seq_oss(emu); 130 #endif 131 snd_emux_init_virmidi(emu, card); 132 133 #ifdef CONFIG_PROC_FS 134 snd_emux_proc_init(emu, card, index); 135 #endif 136 return 0; 137 } 138 139 140 /* 141 */ 142 int snd_emux_free(struct snd_emux *emu) 143 { 144 unsigned long flags; 145 146 if (! emu) 147 return -EINVAL; 148 149 spin_lock_irqsave(&emu->voice_lock, flags); 150 if (emu->timer_active) 151 del_timer(&emu->tlist); 152 spin_unlock_irqrestore(&emu->voice_lock, flags); 153 154 #ifdef CONFIG_PROC_FS 155 snd_emux_proc_free(emu); 156 #endif 157 snd_emux_delete_virmidi(emu); 158 #ifdef CONFIG_SND_SEQUENCER_OSS 159 snd_emux_detach_seq_oss(emu); 160 #endif 161 snd_emux_detach_seq(emu); 162 163 snd_emux_delete_hwdep(emu); 164 165 if (emu->sflist) 166 snd_sf_free(emu->sflist); 167 168 kfree(emu->voices); 169 kfree(emu->name); 170 kfree(emu); 171 return 0; 172 } 173 174 175 EXPORT_SYMBOL(snd_emux_new); 176 EXPORT_SYMBOL(snd_emux_register); 177 EXPORT_SYMBOL(snd_emux_free); 178 179 EXPORT_SYMBOL(snd_emux_terminate_all); 180 EXPORT_SYMBOL(snd_emux_lock_voice); 181 EXPORT_SYMBOL(snd_emux_unlock_voice); 182 183 /* soundfont.c */ 184 EXPORT_SYMBOL(snd_sf_linear_to_log); 185 186 187 /* 188 * INIT part 189 */ 190 191 static int __init alsa_emux_init(void) 192 { 193 return 0; 194 } 195 196 static void __exit alsa_emux_exit(void) 197 { 198 } 199 200 module_init(alsa_emux_init) 201 module_exit(alsa_emux_exit) 202