diff options
Diffstat (limited to 'sound/core/seq/instr/ainstr_gf1.c')
-rw-r--r-- | sound/core/seq/instr/ainstr_gf1.c | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/sound/core/seq/instr/ainstr_gf1.c b/sound/core/seq/instr/ainstr_gf1.c new file mode 100644 index 00000000000..0779c41ca03 --- /dev/null +++ b/sound/core/seq/instr/ainstr_gf1.c @@ -0,0 +1,358 @@ +/* + * 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); |