diff options
Diffstat (limited to 'sound/drivers/opl3/opl3_oss.c')
| -rw-r--r-- | sound/drivers/opl3/opl3_oss.c | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/sound/drivers/opl3/opl3_oss.c b/sound/drivers/opl3/opl3_oss.c new file mode 100644 index 00000000000..33da334ae98 --- /dev/null +++ b/sound/drivers/opl3/opl3_oss.c @@ -0,0 +1,356 @@ +/* + * Interface for OSS sequencer emulation + * + * Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si> + * + * 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 "opl3_voice.h" +#include <linux/slab.h> + +static int snd_opl3_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure); +static int snd_opl3_close_seq_oss(snd_seq_oss_arg_t *arg); +static int snd_opl3_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg); +static int snd_opl3_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, const char __user *buf, int offs, int count); +static int snd_opl3_reset_seq_oss(snd_seq_oss_arg_t *arg); + +/* */ + +static inline mm_segment_t snd_enter_user(void) +{ + mm_segment_t fs = get_fs(); + set_fs(get_ds()); + return fs; +} + +static inline void snd_leave_user(mm_segment_t fs) +{ + set_fs(fs); +} + +/* operators */ + +extern snd_midi_op_t opl3_ops; + +static snd_seq_oss_callback_t oss_callback = { + .owner = THIS_MODULE, + .open = snd_opl3_open_seq_oss, + .close = snd_opl3_close_seq_oss, + .ioctl = snd_opl3_ioctl_seq_oss, + .load_patch = snd_opl3_load_patch_seq_oss, + .reset = snd_opl3_reset_seq_oss, +}; + +static int snd_opl3_oss_event_input(snd_seq_event_t *ev, int direct, + void *private_data, int atomic, int hop) +{ + opl3_t *opl3 = private_data; + + if (ev->type != SNDRV_SEQ_EVENT_OSS) + snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset); + return 0; +} + +/* ------------------------------ */ + +static void snd_opl3_oss_free_port(void *private_data) +{ + opl3_t *opl3 = private_data; + + snd_midi_channel_free_set(opl3->oss_chset); +} + +static int snd_opl3_oss_create_port(opl3_t * opl3) +{ + snd_seq_port_callback_t callbacks; + char name[32]; + int voices, opl_ver; + + voices = (opl3->hardware < OPL3_HW_OPL3) ? + MAX_OPL2_VOICES : MAX_OPL3_VOICES; + opl3->oss_chset = snd_midi_channel_alloc_set(voices); + if (opl3->oss_chset == NULL) + return -ENOMEM; + opl3->oss_chset->private_data = opl3; + + memset(&callbacks, 0, sizeof(callbacks)); + callbacks.owner = THIS_MODULE; + callbacks.event_input = snd_opl3_oss_event_input; + callbacks.private_free = snd_opl3_oss_free_port; + callbacks.private_data = opl3; + + opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8; + sprintf(name, "OPL%i OSS Port", opl_ver); + + opl3->oss_chset->client = opl3->seq_client; + opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks, + SNDRV_SEQ_PORT_CAP_WRITE, + SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | + SNDRV_SEQ_PORT_TYPE_MIDI_GM | + SNDRV_SEQ_PORT_TYPE_SYNTH, + voices, voices, + name); + if (opl3->oss_chset->port < 0) { + snd_midi_channel_free_set(opl3->oss_chset); + return opl3->oss_chset->port; + } + return 0; +} + +/* ------------------------------ */ + +/* register OSS synth */ +void snd_opl3_init_seq_oss(opl3_t *opl3, char *name) +{ + snd_seq_oss_reg_t *arg; + snd_seq_device_t *dev; + + if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS, + sizeof(snd_seq_oss_reg_t), &dev) < 0) + return; + + opl3->oss_seq_dev = dev; + strlcpy(dev->name, name, sizeof(dev->name)); + arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); + arg->type = SYNTH_TYPE_FM; + if (opl3->hardware < OPL3_HW_OPL3) { + arg->subtype = FM_TYPE_ADLIB; + arg->nvoices = MAX_OPL2_VOICES; + } else { + arg->subtype = FM_TYPE_OPL3; + arg->nvoices = MAX_OPL3_VOICES; + } + arg->oper = oss_callback; + arg->private_data = opl3; + + snd_opl3_oss_create_port(opl3); + + /* register to OSS synth table */ + snd_device_register(opl3->card, dev); +} + +/* unregister */ +void snd_opl3_free_seq_oss(opl3_t *opl3) +{ + if (opl3->oss_seq_dev) { + snd_device_free(opl3->card, opl3->oss_seq_dev); + opl3->oss_seq_dev = NULL; + } +} + +/* ------------------------------ */ + +/* open OSS sequencer */ +static int snd_opl3_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure) +{ + opl3_t *opl3 = closure; + int err; + + snd_assert(arg != NULL, return -ENXIO); + + if ((err = snd_opl3_synth_setup(opl3)) < 0) + return err; + + /* fill the argument data */ + arg->private_data = opl3; + arg->addr.client = opl3->oss_chset->client; + arg->addr.port = opl3->oss_chset->port; + + if ((err = snd_opl3_synth_use_inc(opl3)) < 0) + return err; + + opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH; + return 0; +} + +/* close OSS sequencer */ +static int snd_opl3_close_seq_oss(snd_seq_oss_arg_t *arg) +{ + opl3_t *opl3; + + snd_assert(arg != NULL, return -ENXIO); + opl3 = arg->private_data; + + snd_opl3_synth_cleanup(opl3); + + snd_opl3_synth_use_dec(opl3); + return 0; +} + +/* load patch */ + +/* offsets for SBI params */ +#define AM_VIB 0 +#define KSL_LEVEL 2 +#define ATTACK_DECAY 4 +#define SUSTAIN_RELEASE 6 +#define WAVE_SELECT 8 + +/* offset for SBI instrument */ +#define CONNECTION 10 +#define OFFSET_4OP 11 + +/* from sound_config.h */ +#define SBFM_MAXINSTR 256 + +static int snd_opl3_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, + const char __user *buf, int offs, int count) +{ + opl3_t *opl3; + int err = -EINVAL; + + snd_assert(arg != NULL, return -ENXIO); + opl3 = arg->private_data; + + if ((format == FM_PATCH) || (format == OPL3_PATCH)) { + struct sbi_instrument sbi; + + size_t size; + snd_seq_instr_header_t *put; + snd_seq_instr_data_t *data; + fm_xinstrument_t *xinstr; + + snd_seq_event_t ev; + int i; + + mm_segment_t fs; + + if (count < (int)sizeof(sbi)) { + snd_printk("FM Error: Patch record too short\n"); + return -EINVAL; + } + if (copy_from_user(&sbi, buf, sizeof(sbi))) + return -EFAULT; + + if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) { + snd_printk("FM Error: Invalid instrument number %d\n", sbi.channel); + return -EINVAL; + } + + size = sizeof(*put) + sizeof(fm_xinstrument_t); + put = kcalloc(1, size, GFP_KERNEL); + if (put == NULL) + return -ENOMEM; + /* build header */ + data = &put->data; + data->type = SNDRV_SEQ_INSTR_ATYPE_DATA; + strcpy(data->data.format, SNDRV_SEQ_INSTR_ID_OPL2_3); + /* build data section */ + xinstr = (fm_xinstrument_t *)(data + 1); + xinstr->stype = FM_STRU_INSTR; + + for (i = 0; i < 2; i++) { + xinstr->op[i].am_vib = sbi.operators[AM_VIB + i]; + xinstr->op[i].ksl_level = sbi.operators[KSL_LEVEL + i]; + xinstr->op[i].attack_decay = sbi.operators[ATTACK_DECAY + i]; + xinstr->op[i].sustain_release = sbi.operators[SUSTAIN_RELEASE + i]; + xinstr->op[i].wave_select = sbi.operators[WAVE_SELECT + i]; + } + xinstr->feedback_connection[0] = sbi.operators[CONNECTION]; + + if (format == OPL3_PATCH) { + xinstr->type = FM_PATCH_OPL3; + for (i = 0; i < 2; i++) { + xinstr->op[i+2].am_vib = sbi.operators[OFFSET_4OP + AM_VIB + i]; + xinstr->op[i+2].ksl_level = sbi.operators[OFFSET_4OP + KSL_LEVEL + i]; + xinstr->op[i+2].attack_decay = sbi.operators[OFFSET_4OP + ATTACK_DECAY + i]; + xinstr->op[i+2].sustain_release = sbi.operators[OFFSET_4OP + SUSTAIN_RELEASE + i]; + xinstr->op[i+2].wave_select = sbi.operators[OFFSET_4OP + WAVE_SELECT + i]; + } + xinstr->feedback_connection[1] = sbi.operators[OFFSET_4OP + CONNECTION]; + } else { + xinstr->type = FM_PATCH_OPL2; + } + + put->id.instr.std = SNDRV_SEQ_INSTR_TYPE2_OPL2_3; + put->id.instr.bank = 127; + put->id.instr.prg = sbi.channel; + put->cmd = SNDRV_SEQ_INSTR_PUT_CMD_CREATE; + + memset (&ev, 0, sizeof(ev)); + ev.source.client = SNDRV_SEQ_CLIENT_OSS; + ev.dest = arg->addr; + + ev.flags = SNDRV_SEQ_EVENT_LENGTH_VARUSR; + ev.queue = SNDRV_SEQ_QUEUE_DIRECT; + + fs = snd_enter_user(); + __again: + ev.type = SNDRV_SEQ_EVENT_INSTR_PUT; + ev.data.ext.len = size; + ev.data.ext.ptr = put; + + err = snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev, + opl3->seq_client, 0, 0); + if (err == -EBUSY) { + snd_seq_instr_header_t remove; + + memset (&remove, 0, sizeof(remove)); + remove.cmd = SNDRV_SEQ_INSTR_FREE_CMD_SINGLE; + remove.id.instr = put->id.instr; + + /* remove instrument */ + ev.type = SNDRV_SEQ_EVENT_INSTR_FREE; + ev.data.ext.len = sizeof(remove); + ev.data.ext.ptr = &remove; + + snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev, + opl3->seq_client, 0, 0); + goto __again; + } + snd_leave_user(fs); + + kfree(put); + } + return err; +} + +/* ioctl */ +static int snd_opl3_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, + unsigned long ioarg) +{ + opl3_t *opl3; + + snd_assert(arg != NULL, return -ENXIO); + opl3 = arg->private_data; + switch (cmd) { + case SNDCTL_FM_LOAD_INSTR: + snd_printk("OPL3: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n"); + return -EINVAL; + + case SNDCTL_SYNTH_MEMAVL: + return 0x7fffffff; + + case SNDCTL_FM_4OP_ENABLE: + // handled automatically by OPL instrument type + return 0; + + default: + return -EINVAL; + } + return 0; +} + +/* reset device */ +static int snd_opl3_reset_seq_oss(snd_seq_oss_arg_t *arg) +{ + opl3_t *opl3; + + snd_assert(arg != NULL, return -ENXIO); + opl3 = arg->private_data; + + return 0; +} |