d81a6d7176
These aren't modules, but they do make use of these macros, so they will need export.h to get that definition. Previously, they got it via the implicit module.h inclusion. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
286 lines
6.9 KiB
C
286 lines
6.9 KiB
C
/*
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* Interface for OSS sequencer emulation
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*
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* Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/export.h>
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#include "opl3_voice.h"
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static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure);
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static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg);
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static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg);
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static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, const char __user *buf, int offs, int count);
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static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg);
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/* */
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static inline mm_segment_t snd_enter_user(void)
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{
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mm_segment_t fs = get_fs();
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set_fs(get_ds());
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return fs;
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}
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static inline void snd_leave_user(mm_segment_t fs)
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{
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set_fs(fs);
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}
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/* operators */
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extern struct snd_midi_op opl3_ops;
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static struct snd_seq_oss_callback oss_callback = {
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.owner = THIS_MODULE,
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.open = snd_opl3_open_seq_oss,
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.close = snd_opl3_close_seq_oss,
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.ioctl = snd_opl3_ioctl_seq_oss,
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.load_patch = snd_opl3_load_patch_seq_oss,
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.reset = snd_opl3_reset_seq_oss,
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};
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static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct,
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void *private_data, int atomic, int hop)
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{
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struct snd_opl3 *opl3 = private_data;
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if (ev->type != SNDRV_SEQ_EVENT_OSS)
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snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
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return 0;
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}
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/* ------------------------------ */
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static void snd_opl3_oss_free_port(void *private_data)
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{
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struct snd_opl3 *opl3 = private_data;
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snd_midi_channel_free_set(opl3->oss_chset);
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}
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static int snd_opl3_oss_create_port(struct snd_opl3 * opl3)
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{
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struct snd_seq_port_callback callbacks;
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char name[32];
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int voices, opl_ver;
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voices = (opl3->hardware < OPL3_HW_OPL3) ?
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MAX_OPL2_VOICES : MAX_OPL3_VOICES;
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opl3->oss_chset = snd_midi_channel_alloc_set(voices);
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if (opl3->oss_chset == NULL)
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return -ENOMEM;
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opl3->oss_chset->private_data = opl3;
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memset(&callbacks, 0, sizeof(callbacks));
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callbacks.owner = THIS_MODULE;
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callbacks.event_input = snd_opl3_oss_event_input;
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callbacks.private_free = snd_opl3_oss_free_port;
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callbacks.private_data = opl3;
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opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
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sprintf(name, "OPL%i OSS Port", opl_ver);
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opl3->oss_chset->client = opl3->seq_client;
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opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
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SNDRV_SEQ_PORT_CAP_WRITE,
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SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
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SNDRV_SEQ_PORT_TYPE_MIDI_GM |
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SNDRV_SEQ_PORT_TYPE_HARDWARE |
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SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
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voices, voices,
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name);
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if (opl3->oss_chset->port < 0) {
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int port;
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port = opl3->oss_chset->port;
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snd_midi_channel_free_set(opl3->oss_chset);
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return port;
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}
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return 0;
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}
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/* ------------------------------ */
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/* register OSS synth */
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void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name)
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{
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struct snd_seq_oss_reg *arg;
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struct snd_seq_device *dev;
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if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
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sizeof(struct snd_seq_oss_reg), &dev) < 0)
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return;
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opl3->oss_seq_dev = dev;
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strlcpy(dev->name, name, sizeof(dev->name));
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arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
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arg->type = SYNTH_TYPE_FM;
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if (opl3->hardware < OPL3_HW_OPL3) {
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arg->subtype = FM_TYPE_ADLIB;
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arg->nvoices = MAX_OPL2_VOICES;
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} else {
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arg->subtype = FM_TYPE_OPL3;
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arg->nvoices = MAX_OPL3_VOICES;
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}
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arg->oper = oss_callback;
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arg->private_data = opl3;
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if (snd_opl3_oss_create_port(opl3)) {
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/* register to OSS synth table */
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snd_device_register(opl3->card, dev);
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}
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}
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/* unregister */
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void snd_opl3_free_seq_oss(struct snd_opl3 *opl3)
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{
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if (opl3->oss_seq_dev) {
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/* The instance should have been released in prior */
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opl3->oss_seq_dev = NULL;
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}
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}
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/* ------------------------------ */
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/* open OSS sequencer */
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static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
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{
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struct snd_opl3 *opl3 = closure;
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int err;
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if (snd_BUG_ON(!arg))
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return -ENXIO;
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if ((err = snd_opl3_synth_setup(opl3)) < 0)
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return err;
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/* fill the argument data */
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arg->private_data = opl3;
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arg->addr.client = opl3->oss_chset->client;
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arg->addr.port = opl3->oss_chset->port;
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if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
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return err;
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opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
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return 0;
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}
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/* close OSS sequencer */
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static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
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{
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struct snd_opl3 *opl3;
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if (snd_BUG_ON(!arg))
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return -ENXIO;
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opl3 = arg->private_data;
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snd_opl3_synth_cleanup(opl3);
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snd_opl3_synth_use_dec(opl3);
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return 0;
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}
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/* load patch */
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/* from sound_config.h */
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#define SBFM_MAXINSTR 256
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static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
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const char __user *buf, int offs, int count)
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{
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struct snd_opl3 *opl3;
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struct sbi_instrument sbi;
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char name[32];
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int err, type;
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if (snd_BUG_ON(!arg))
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return -ENXIO;
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opl3 = arg->private_data;
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if (format == FM_PATCH)
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type = FM_PATCH_OPL2;
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else if (format == OPL3_PATCH)
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type = FM_PATCH_OPL3;
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else
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return -EINVAL;
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if (count < (int)sizeof(sbi)) {
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snd_printk(KERN_ERR "FM Error: Patch record too short\n");
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return -EINVAL;
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}
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if (copy_from_user(&sbi, buf, sizeof(sbi)))
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return -EFAULT;
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if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) {
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snd_printk(KERN_ERR "FM Error: Invalid instrument number %d\n",
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sbi.channel);
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return -EINVAL;
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}
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memset(name, 0, sizeof(name));
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sprintf(name, "Chan%d", sbi.channel);
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err = snd_opl3_load_patch(opl3, sbi.channel, 127, type, name, NULL,
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sbi.operators);
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if (err < 0)
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return err;
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return sizeof(sbi);
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}
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/* ioctl */
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static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
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unsigned long ioarg)
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{
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struct snd_opl3 *opl3;
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if (snd_BUG_ON(!arg))
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return -ENXIO;
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opl3 = arg->private_data;
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switch (cmd) {
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case SNDCTL_FM_LOAD_INSTR:
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snd_printk(KERN_ERR "OPL3: "
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"Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. "
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"Fix the program.\n");
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return -EINVAL;
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case SNDCTL_SYNTH_MEMAVL:
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return 0x7fffffff;
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case SNDCTL_FM_4OP_ENABLE:
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// handled automatically by OPL instrument type
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return 0;
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default:
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return -EINVAL;
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}
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return 0;
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}
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/* reset device */
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static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
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{
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struct snd_opl3 *opl3;
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if (snd_BUG_ON(!arg))
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return -ENXIO;
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opl3 = arg->private_data;
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return 0;
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}
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