sound/core/seq/instr/ainstr_fm.c

   1 /*
   2  *  FM (OPL2/3) Instrument routines
   3  *  Copyright (c) 2000 Uros Bizjak <uros@kss-loka.si>
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *   GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program; if not, write to the Free Software
  17  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  *
  19  */
  20
  21 #include <sound/driver.h>
  22 #include <linux/init.h>
  23 #include <sound/core.h>
  24 #include <sound/ainstr_fm.h>
  25 #include <sound/initval.h>
  26 #include <asm/uaccess.h>
  27
  28 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
  29 MODULE_DESCRIPTION("Advanced Linux Sound Architecture FM Instrument support.");
  30 MODULE_LICENSE("GPL");
  31
  32 static int snd_seq_fm_put(void *private_data, struct snd_seq_kinstr *instr,
  33                           char __user *instr_data, long len, int atomic, int cmd)
  34 {
  35         struct fm_instrument *ip;
  36         struct fm_xinstrument ix;
  37         int idx;
  38
  39         if (cmd != SNDRV_SEQ_INSTR_PUT_CMD_CREATE)
  40                 return -EINVAL;
  41         /* copy instrument data */
  42         if (len < (long)sizeof(ix))
  43                 return -EINVAL;
  44         if (copy_from_user(&ix, instr_data, sizeof(ix)))
  45                 return -EFAULT;
  46         if (ix.stype != FM_STRU_INSTR)
  47                 return -EINVAL;
  48         ip = (struct fm_instrument *)KINSTR_DATA(instr);
  49         ip->share_id[0] = le32_to_cpu(ix.share_id[0]);
  50         ip->share_id[1] = le32_to_cpu(ix.share_id[1]);
  51         ip->share_id[2] = le32_to_cpu(ix.share_id[2]);
  52         ip->share_id[3] = le32_to_cpu(ix.share_id[3]);
  53         ip->type = ix.type;
  54         for (idx = 0; idx < 4; idx++) {
  55                 ip->op[idx].am_vib = ix.op[idx].am_vib;
  56                 ip->op[idx].ksl_level = ix.op[idx].ksl_level;
  57                 ip->op[idx].attack_decay = ix.op[idx].attack_decay;
  58                 ip->op[idx].sustain_release = ix.op[idx].sustain_release;
  59                 ip->op[idx].wave_select = ix.op[idx].wave_select;
  60         }
  61         for (idx = 0; idx < 2; idx++) {
  62                 ip->feedback_connection[idx] = ix.feedback_connection[idx];
  63         }
  64         ip->echo_delay = ix.echo_delay;
  65         ip->echo_atten = ix.echo_atten;
  66         ip->chorus_spread = ix.chorus_spread;
  67         ip->trnsps = ix.trnsps;
  68         ip->fix_dur = ix.fix_dur;
  69         ip->modes = ix.modes;
  70         ip->fix_key = ix.fix_key;
  71         return 0;
  72 }
  73
  74 static int snd_seq_fm_get(void *private_data, struct snd_seq_kinstr *instr,
  75                           char __user *instr_data, long len, int atomic,
  76                           int cmd)
  77 {
  78         struct fm_instrument *ip;
  79         struct fm_xinstrument ix;
  80         int idx;
  81
  82         if (cmd != SNDRV_SEQ_INSTR_GET_CMD_FULL)
  83                 return -EINVAL;
  84         if (len < (long)sizeof(ix))
  85                 return -ENOMEM;
  86         memset(&ix, 0, sizeof(ix));
  87         ip = (struct fm_instrument *)KINSTR_DATA(instr);
  88         ix.stype = FM_STRU_INSTR;
  89         ix.share_id[0] = cpu_to_le32(ip->share_id[0]);
  90         ix.share_id[1] = cpu_to_le32(ip->share_id[1]);
  91         ix.share_id[2] = cpu_to_le32(ip->share_id[2]);
  92         ix.share_id[3] = cpu_to_le32(ip->share_id[3]);
  93         ix.type = ip->type;
  94         for (idx = 0; idx < 4; idx++) {
  95                 ix.op[idx].am_vib = ip->op[idx].am_vib;
  96                 ix.op[idx].ksl_level = ip->op[idx].ksl_level;
  97                 ix.op[idx].attack_decay = ip->op[idx].attack_decay;
  98                 ix.op[idx].sustain_release = ip->op[idx].sustain_release;
  99                 ix.op[idx].wave_select = ip->op[idx].wave_select;
 100         }
 101         for (idx = 0; idx < 2; idx++) {
 102                 ix.feedback_connection[idx] = ip->feedback_connection[idx];
 103         }
 104         if (copy_to_user(instr_data, &ix, sizeof(ix)))
 105                 return -EFAULT;
 106         ix.echo_delay = ip->echo_delay;
 107         ix.echo_atten = ip->echo_atten;
 108         ix.chorus_spread = ip->chorus_spread;
 109         ix.trnsps = ip->trnsps;
 110         ix.fix_dur = ip->fix_dur;
 111         ix.modes = ip->modes;
 112         ix.fix_key = ip->fix_key;
 113         return 0;
 114 }
 115
 116 static int snd_seq_fm_get_size(void *private_data, struct snd_seq_kinstr *instr,
 117                                long *size)
 118 {
 119         *size = sizeof(struct fm_xinstrument);
 120         return 0;
 121 }
 122
 123 int snd_seq_fm_init(struct snd_seq_kinstr_ops *ops,
 124                     struct snd_seq_kinstr_ops *next)
 125 {
 126         memset(ops, 0, sizeof(*ops));
 127         // ops->private_data = private_data;
 128         ops->add_len = sizeof(struct fm_instrument);
 129         ops->instr_type = SNDRV_SEQ_INSTR_ID_OPL2_3;
 130         ops->put = snd_seq_fm_put;
 131         ops->get = snd_seq_fm_get;
 132         ops->get_size = snd_seq_fm_get_size;
 133         // ops->remove = snd_seq_fm_remove;
 134         // ops->notify = snd_seq_fm_notify;
 135         ops->next = next;
 136         return 0;
 137 }
 138
 139 /*
 140  *  Init part
 141  */
 142
 143 static int __init alsa_ainstr_fm_init(void)
 144 {
 145         return 0;
 146 }
 147
 148 static void __exit alsa_ainstr_fm_exit(void)
 149 {
 150 }
 151
 152 module_init(alsa_ainstr_fm_init)
 153 module_exit(alsa_ainstr_fm_exit)
 154
 155 EXPORT_SYMBOL(snd_seq_fm_init);