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/*
* Simple (MOD player) - Instrument routines
* Copyright (c) 1999 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/init.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/ainstr_simple.h>
#include <sound/initval.h>
#include <asm/uaccess.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Advanced Linux Sound Architecture Simple Instrument support.");
MODULE_LICENSE("GPL");
static unsigned int snd_seq_simple_size(unsigned int size, unsigned int format)
{
unsigned int result = size;
if (format & SIMPLE_WAVE_16BIT)
result <<= 1;
if (format & SIMPLE_WAVE_STEREO)
result <<= 1;
return result;
}
static void snd_seq_simple_instr_free(struct snd_simple_ops *ops,
struct simple_instrument *ip,
int atomic)
{
if (ops->remove_sample)
ops->remove_sample(ops->private_data, ip, atomic);
}
static int snd_seq_simple_put(void *private_data, struct snd_seq_kinstr *instr,
char __user *instr_data, long len,
int atomic, int cmd)
{
struct snd_simple_ops *ops = private_data;
struct simple_instrument *ip;
struct simple_xinstrument ix;
int err;
gfp_t gfp_mask;
unsigned int real_size;
if (cmd != SNDRV_SEQ_INSTR_PUT_CMD_CREATE)
return -EINVAL;
gfp_mask = atomic ? GFP_ATOMIC : GFP_KERNEL;
/* copy instrument data */
if (len < (long)sizeof(ix))
return -EINVAL;
if (copy_from_user(&ix, instr_data, sizeof(ix)))
return -EFAULT;
if (ix.stype != SIMPLE_STRU_INSTR)
return -EINVAL;
instr_data += sizeof(ix);
len -= sizeof(ix);
ip = (struct simple_instrument *)KINSTR_DATA(instr);
ip->share_id[0] = le32_to_cpu(ix.share_id[0]);
ip->share_id[1] = le32_to_cpu(ix.share_id[1]);
ip->share_id[2] = le32_to_cpu(ix.share_id[2]);
ip->share_id[3] = le32_to_cpu(ix.share_id[3]);
ip->format = le32_to_cpu(ix.format);
ip->size = le32_to_cpu(ix.size);
ip->start = le32_to_cpu(ix.start);
ip->loop_start = le32_to_cpu(ix.loop_start);
ip->loop_end = le32_to_cpu(ix.loop_end);
ip->loop_repeat = le16_to_cpu(ix.loop_repeat);
ip->effect1 = ix.effect1;
ip->effect1_depth = ix.effect1_depth;
ip->effect2 = ix.effect2;
ip->effect2_depth = ix.effect2_depth;
real_size = snd_seq_simple_size(ip->size, ip->format);
if (len < (long)real_size)
return -EINVAL;
if (ops->put_sample) {
err = ops->put_sample(ops->private_data, ip,
instr_data, real_size, atomic);
if (err < 0)
return err;
}
return 0;
}
static int snd_seq_simple_get(void *private_data, struct snd_seq_kinstr *instr,
char __user *instr_data, long len,
int atomic, int cmd)
{
struct snd_simple_ops *ops = private_data;
struct simple_instrument *ip;
struct simple_xinstrument ix;
int err;
unsigned int real_size;
if (cmd != SNDRV_SEQ_INSTR_GET_CMD_FULL)
return -EINVAL;
if (len < (long)sizeof(ix))
return -ENOMEM;
memset(&ix, 0, sizeof(ix));
ip = (struct simple_instrument *)KINSTR_DATA(instr);
ix.stype = SIMPLE_STRU_INSTR;
ix.share_id[0] = cpu_to_le32(ip->share_id[0]);
ix.share_id[1] = cpu_to_le32(ip->share_id[1]);
ix.share_id[2] = cpu_to_le32(ip->share_id[2]);
ix.share_id[3] = cpu_to_le32(ip->share_id[3]);
ix.format = cpu_to_le32(ip->format);
ix.size = cpu_to_le32(ip->size);
ix.start = cpu_to_le32(ip->start);
ix.loop_start = cpu_to_le32(ip->loop_start);
ix.loop_end = cpu_to_le32(ip->loop_end);
ix.loop_repeat = cpu_to_le32(ip->loop_repeat);
ix.effect1 = cpu_to_le16(ip->effect1);
ix.effect1_depth = cpu_to_le16(ip->effect1_depth);
ix.effect2 = ip->effect2;
ix.effect2_depth = ip->effect2_depth;
if (copy_to_user(instr_data, &ix, sizeof(ix)))
return -EFAULT;
instr_data += sizeof(ix);
len -= sizeof(ix);
real_size = snd_seq_simple_size(ip->size, ip->format);
if (len < (long)real_size)
return -ENOMEM;
if (ops->get_sample) {
err = ops->get_sample(ops->private_data, ip,
instr_data, real_size, atomic);
if (err < 0)
return err;
}
return 0;
}
static int snd_seq_simple_get_size(void *private_data, struct snd_seq_kinstr *instr,
long *size)
{
struct simple_instrument *ip;
ip = (struct simple_instrument *)KINSTR_DATA(instr);
*size = sizeof(struct simple_xinstrument) + snd_seq_simple_size(ip->size, ip->format);
return 0;
}
static int snd_seq_simple_remove(void *private_data,
struct snd_seq_kinstr *instr,
int atomic)
{
struct snd_simple_ops *ops = private_data;
struct simple_instrument *ip;
ip = (struct simple_instrument *)KINSTR_DATA(instr);
snd_seq_simple_instr_free(ops, ip, atomic);
return 0;
}
static void snd_seq_simple_notify(void *private_data,
struct snd_seq_kinstr *instr,
int what)
{
struct snd_simple_ops *ops = private_data;
if (ops->notify)
ops->notify(ops->private_data, instr, what);
}
int snd_seq_simple_init(struct snd_simple_ops *ops,
void *private_data,
struct snd_seq_kinstr_ops *next)
{
memset(ops, 0, sizeof(*ops));
ops->private_data = private_data;
ops->kops.private_data = ops;
ops->kops.add_len = sizeof(struct simple_instrument);
ops->kops.instr_type = SNDRV_SEQ_INSTR_ID_SIMPLE;
ops->kops.put = snd_seq_simple_put;
ops->kops.get = snd_seq_simple_get;
ops->kops.get_size = snd_seq_simple_get_size;
ops->kops.remove = snd_seq_simple_remove;
ops->kops.notify = snd_seq_simple_notify;
ops->kops.next = next;
return 0;
}
/*
* Init part
*/
static int __init alsa_ainstr_simple_init(void)
{
return 0;
}
static void __exit alsa_ainstr_simple_exit(void)
{
}
module_init(alsa_ainstr_simple_init)
module_exit(alsa_ainstr_simple_exit)
EXPORT_SYMBOL(snd_seq_simple_init);
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