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linux-IllusionX/sound/core/seq/instr/ainstr_gf1.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

358 lines
9.8 KiB
C
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/*
* GF1 (GUS) Patch - 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/sched.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/ainstr_gf1.h>
#include <sound/initval.h>
#include <asm/uaccess.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Advanced Linux Sound Architecture GF1 (GUS) Patch support.");
MODULE_LICENSE("GPL");
static unsigned int snd_seq_gf1_size(unsigned int size, unsigned int format)
{
unsigned int result = size;
if (format & GF1_WAVE_16BIT)
result <<= 1;
if (format & GF1_WAVE_STEREO)
result <<= 1;
return format;
}
static int snd_seq_gf1_copy_wave_from_stream(snd_gf1_ops_t *ops,
gf1_instrument_t *ip,
char __user **data,
long *len,
int atomic)
{
gf1_wave_t *wp, *prev;
gf1_xwave_t xp;
int err, gfp_mask;
unsigned int real_size;
gfp_mask = atomic ? GFP_ATOMIC : GFP_KERNEL;
if (*len < (long)sizeof(xp))
return -EINVAL;
if (copy_from_user(&xp, *data, sizeof(xp)))
return -EFAULT;
*data += sizeof(xp);
*len -= sizeof(xp);
wp = kcalloc(1, sizeof(*wp), gfp_mask);
if (wp == NULL)
return -ENOMEM;
wp->share_id[0] = le32_to_cpu(xp.share_id[0]);
wp->share_id[1] = le32_to_cpu(xp.share_id[1]);
wp->share_id[2] = le32_to_cpu(xp.share_id[2]);
wp->share_id[3] = le32_to_cpu(xp.share_id[3]);
wp->format = le32_to_cpu(xp.format);
wp->size = le32_to_cpu(xp.size);
wp->start = le32_to_cpu(xp.start);
wp->loop_start = le32_to_cpu(xp.loop_start);
wp->loop_end = le32_to_cpu(xp.loop_end);
wp->loop_repeat = le16_to_cpu(xp.loop_repeat);
wp->flags = xp.flags;
wp->sample_rate = le32_to_cpu(xp.sample_rate);
wp->low_frequency = le32_to_cpu(xp.low_frequency);
wp->high_frequency = le32_to_cpu(xp.high_frequency);
wp->root_frequency = le32_to_cpu(xp.root_frequency);
wp->tune = le16_to_cpu(xp.tune);
wp->balance = xp.balance;
memcpy(wp->envelope_rate, xp.envelope_rate, 6);
memcpy(wp->envelope_offset, xp.envelope_offset, 6);
wp->tremolo_sweep = xp.tremolo_sweep;
wp->tremolo_rate = xp.tremolo_rate;
wp->tremolo_depth = xp.tremolo_depth;
wp->vibrato_sweep = xp.vibrato_sweep;
wp->vibrato_rate = xp.vibrato_rate;
wp->vibrato_depth = xp.vibrato_depth;
wp->scale_frequency = le16_to_cpu(xp.scale_frequency);
wp->scale_factor = le16_to_cpu(xp.scale_factor);
real_size = snd_seq_gf1_size(wp->size, wp->format);
if ((long)real_size > *len) {
kfree(wp);
return -ENOMEM;
}
if (ops->put_sample) {
err = ops->put_sample(ops->private_data, wp,
*data, real_size, atomic);
if (err < 0) {
kfree(wp);
return err;
}
}
*data += real_size;
*len -= real_size;
prev = ip->wave;
if (prev) {
while (prev->next) prev = prev->next;
prev->next = wp;
} else {
ip->wave = wp;
}
return 0;
}
static void snd_seq_gf1_wave_free(snd_gf1_ops_t *ops,
gf1_wave_t *wave,
int atomic)
{
if (ops->remove_sample)
ops->remove_sample(ops->private_data, wave, atomic);
kfree(wave);
}
static void snd_seq_gf1_instr_free(snd_gf1_ops_t *ops,
gf1_instrument_t *ip,
int atomic)
{
gf1_wave_t *wave;
while ((wave = ip->wave) != NULL) {
ip->wave = wave->next;
snd_seq_gf1_wave_free(ops, wave, atomic);
}
}
static int snd_seq_gf1_put(void *private_data, snd_seq_kinstr_t *instr,
char __user *instr_data, long len, int atomic,
int cmd)
{
snd_gf1_ops_t *ops = (snd_gf1_ops_t *)private_data;
gf1_instrument_t *ip;
gf1_xinstrument_t ix;
int err, gfp_mask;
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 != GF1_STRU_INSTR)
return -EINVAL;
instr_data += sizeof(ix);
len -= sizeof(ix);
ip = (gf1_instrument_t *)KINSTR_DATA(instr);
ip->exclusion = le16_to_cpu(ix.exclusion);
ip->exclusion_group = le16_to_cpu(ix.exclusion_group);
ip->effect1 = ix.effect1;
ip->effect1_depth = ix.effect1_depth;
ip->effect2 = ix.effect2;
ip->effect2_depth = ix.effect2_depth;
/* copy layers */
while (len > (long)sizeof(__u32)) {
__u32 stype;
if (copy_from_user(&stype, instr_data, sizeof(stype)))
return -EFAULT;
if (stype != GF1_STRU_WAVE) {
snd_seq_gf1_instr_free(ops, ip, atomic);
return -EINVAL;
}
err = snd_seq_gf1_copy_wave_from_stream(ops,
ip,
&instr_data,
&len,
atomic);
if (err < 0) {
snd_seq_gf1_instr_free(ops, ip, atomic);
return err;
}
}
return 0;
}
static int snd_seq_gf1_copy_wave_to_stream(snd_gf1_ops_t *ops,
gf1_instrument_t *ip,
char __user **data,
long *len,
int atomic)
{
gf1_wave_t *wp;
gf1_xwave_t xp;
int err;
unsigned int real_size;
for (wp = ip->wave; wp; wp = wp->next) {
if (*len < (long)sizeof(xp))
return -ENOMEM;
memset(&xp, 0, sizeof(xp));
xp.stype = GF1_STRU_WAVE;
xp.share_id[0] = cpu_to_le32(wp->share_id[0]);
xp.share_id[1] = cpu_to_le32(wp->share_id[1]);
xp.share_id[2] = cpu_to_le32(wp->share_id[2]);
xp.share_id[3] = cpu_to_le32(wp->share_id[3]);
xp.format = cpu_to_le32(wp->format);
xp.size = cpu_to_le32(wp->size);
xp.start = cpu_to_le32(wp->start);
xp.loop_start = cpu_to_le32(wp->loop_start);
xp.loop_end = cpu_to_le32(wp->loop_end);
xp.loop_repeat = cpu_to_le32(wp->loop_repeat);
xp.flags = wp->flags;
xp.sample_rate = cpu_to_le32(wp->sample_rate);
xp.low_frequency = cpu_to_le32(wp->low_frequency);
xp.high_frequency = cpu_to_le32(wp->high_frequency);
xp.root_frequency = cpu_to_le32(wp->root_frequency);
xp.tune = cpu_to_le16(wp->tune);
xp.balance = wp->balance;
memcpy(xp.envelope_rate, wp->envelope_rate, 6);
memcpy(xp.envelope_offset, wp->envelope_offset, 6);
xp.tremolo_sweep = wp->tremolo_sweep;
xp.tremolo_rate = wp->tremolo_rate;
xp.tremolo_depth = wp->tremolo_depth;
xp.vibrato_sweep = wp->vibrato_sweep;
xp.vibrato_rate = wp->vibrato_rate;
xp.vibrato_depth = wp->vibrato_depth;
xp.scale_frequency = cpu_to_le16(wp->scale_frequency);
xp.scale_factor = cpu_to_le16(wp->scale_factor);
if (copy_to_user(*data, &xp, sizeof(xp)))
return -EFAULT;
*data += sizeof(xp);
*len -= sizeof(xp);
real_size = snd_seq_gf1_size(wp->size, wp->format);
if (*len < (long)real_size)
return -ENOMEM;
if (ops->get_sample) {
err = ops->get_sample(ops->private_data, wp,
*data, real_size, atomic);
if (err < 0)
return err;
}
*data += wp->size;
*len -= wp->size;
}
return 0;
}
static int snd_seq_gf1_get(void *private_data, snd_seq_kinstr_t *instr,
char __user *instr_data, long len, int atomic,
int cmd)
{
snd_gf1_ops_t *ops = (snd_gf1_ops_t *)private_data;
gf1_instrument_t *ip;
gf1_xinstrument_t ix;
if (cmd != SNDRV_SEQ_INSTR_GET_CMD_FULL)
return -EINVAL;
if (len < (long)sizeof(ix))
return -ENOMEM;
memset(&ix, 0, sizeof(ix));
ip = (gf1_instrument_t *)KINSTR_DATA(instr);
ix.stype = GF1_STRU_INSTR;
ix.exclusion = cpu_to_le16(ip->exclusion);
ix.exclusion_group = cpu_to_le16(ip->exclusion_group);
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);
return snd_seq_gf1_copy_wave_to_stream(ops,
ip,
&instr_data,
&len,
atomic);
}
static int snd_seq_gf1_get_size(void *private_data, snd_seq_kinstr_t *instr,
long *size)
{
long result;
gf1_instrument_t *ip;
gf1_wave_t *wp;
*size = 0;
ip = (gf1_instrument_t *)KINSTR_DATA(instr);
result = sizeof(gf1_xinstrument_t);
for (wp = ip->wave; wp; wp = wp->next) {
result += sizeof(gf1_xwave_t);
result += wp->size;
}
*size = result;
return 0;
}
static int snd_seq_gf1_remove(void *private_data,
snd_seq_kinstr_t *instr,
int atomic)
{
snd_gf1_ops_t *ops = (snd_gf1_ops_t *)private_data;
gf1_instrument_t *ip;
ip = (gf1_instrument_t *)KINSTR_DATA(instr);
snd_seq_gf1_instr_free(ops, ip, atomic);
return 0;
}
static void snd_seq_gf1_notify(void *private_data,
snd_seq_kinstr_t *instr,
int what)
{
snd_gf1_ops_t *ops = (snd_gf1_ops_t *)private_data;
if (ops->notify)
ops->notify(ops->private_data, instr, what);
}
int snd_seq_gf1_init(snd_gf1_ops_t *ops,
void *private_data,
snd_seq_kinstr_ops_t *next)
{
memset(ops, 0, sizeof(*ops));
ops->private_data = private_data;
ops->kops.private_data = ops;
ops->kops.add_len = sizeof(gf1_instrument_t);
ops->kops.instr_type = SNDRV_SEQ_INSTR_ID_GUS_PATCH;
ops->kops.put = snd_seq_gf1_put;
ops->kops.get = snd_seq_gf1_get;
ops->kops.get_size = snd_seq_gf1_get_size;
ops->kops.remove = snd_seq_gf1_remove;
ops->kops.notify = snd_seq_gf1_notify;
ops->kops.next = next;
return 0;
}
/*
* Init part
*/
static int __init alsa_ainstr_gf1_init(void)
{
return 0;
}
static void __exit alsa_ainstr_gf1_exit(void)
{
}
module_init(alsa_ainstr_gf1_init)
module_exit(alsa_ainstr_gf1_exit)
EXPORT_SYMBOL(snd_seq_gf1_init);
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