diff options
Diffstat (limited to 'sound/core/seq/instr/ainstr_simple.c')
| -rw-r--r-- | sound/core/seq/instr/ainstr_simple.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/sound/core/seq/instr/ainstr_simple.c b/sound/core/seq/instr/ainstr_simple.c new file mode 100644 index 000000000000..6183d2151034 --- /dev/null +++ b/sound/core/seq/instr/ainstr_simple.c @@ -0,0 +1,215 @@ +/* + * 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/sched.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(snd_simple_ops_t *ops, + simple_instrument_t *ip, + int atomic) +{ + if (ops->remove_sample) + ops->remove_sample(ops->private_data, ip, atomic); +} + +static int snd_seq_simple_put(void *private_data, snd_seq_kinstr_t *instr, + char __user *instr_data, long len, + int atomic, int cmd) +{ + snd_simple_ops_t *ops = (snd_simple_ops_t *)private_data; + simple_instrument_t *ip; + simple_xinstrument_t ix; + int err, 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 = (simple_instrument_t *)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, snd_seq_kinstr_t *instr, + char __user *instr_data, long len, + int atomic, int cmd) +{ + snd_simple_ops_t *ops = (snd_simple_ops_t *)private_data; + simple_instrument_t *ip; + simple_xinstrument_t 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 = (simple_instrument_t *)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, snd_seq_kinstr_t *instr, + long *size) +{ + simple_instrument_t *ip; + + ip = (simple_instrument_t *)KINSTR_DATA(instr); + *size = sizeof(simple_xinstrument_t) + snd_seq_simple_size(ip->size, ip->format); + return 0; +} + +static int snd_seq_simple_remove(void *private_data, + snd_seq_kinstr_t *instr, + int atomic) +{ + snd_simple_ops_t *ops = (snd_simple_ops_t *)private_data; + simple_instrument_t *ip; + + ip = (simple_instrument_t *)KINSTR_DATA(instr); + snd_seq_simple_instr_free(ops, ip, atomic); + return 0; +} + +static void snd_seq_simple_notify(void *private_data, + snd_seq_kinstr_t *instr, + int what) +{ + snd_simple_ops_t *ops = (snd_simple_ops_t *)private_data; + + if (ops->notify) + ops->notify(ops->private_data, instr, what); +} + +int snd_seq_simple_init(snd_simple_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(simple_instrument_t); + 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); |