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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/synth/emux/emux_oss.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
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!
Diffstat (limited to 'sound/synth/emux/emux_oss.c')
-rw-r--r-- | sound/synth/emux/emux_oss.c | 497 |
1 files changed, 497 insertions, 0 deletions
diff --git a/sound/synth/emux/emux_oss.c b/sound/synth/emux/emux_oss.c new file mode 100644 index 0000000..5272f4a --- /dev/null +++ b/sound/synth/emux/emux_oss.c @@ -0,0 +1,497 @@ +/* + * Interface for OSS sequencer emulation + * + * Copyright (C) 1999 Takashi Iwai <tiwai@suse.de> + * + * 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 + * + * Changes + * 19990227 Steve Ratcliffe Made separate file and merged in latest + * midi emulation. + */ + +#include <sound/driver.h> + +#ifdef CONFIG_SND_SEQUENCER_OSS + +#include <asm/uaccess.h> +#include <sound/core.h> +#include "emux_voice.h" +#include <sound/asoundef.h> + +static int snd_emux_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure); +static int snd_emux_close_seq_oss(snd_seq_oss_arg_t *arg); +static int snd_emux_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg); +static int snd_emux_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, const char __user *buf, int offs, int count); +static int snd_emux_reset_seq_oss(snd_seq_oss_arg_t *arg); +static int snd_emux_event_oss_input(snd_seq_event_t *ev, int direct, void *private, int atomic, int hop); +static void reset_port_mode(snd_emux_port_t *port, int midi_mode); +static void emuspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, unsigned char *event, int atomic, int hop); +static void gusspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, unsigned char *event, int atomic, int hop); +static void fake_event(snd_emux_t *emu, snd_emux_port_t *port, int ch, int param, int val, int atomic, int hop); + +/* operators */ +static snd_seq_oss_callback_t oss_callback = { + .owner = THIS_MODULE, + .open = snd_emux_open_seq_oss, + .close = snd_emux_close_seq_oss, + .ioctl = snd_emux_ioctl_seq_oss, + .load_patch = snd_emux_load_patch_seq_oss, + .reset = snd_emux_reset_seq_oss, +}; + + +/* + * register OSS synth + */ + +void +snd_emux_init_seq_oss(snd_emux_t *emu) +{ + snd_seq_oss_reg_t *arg; + snd_seq_device_t *dev; + + if (snd_seq_device_new(emu->card, 0, SNDRV_SEQ_DEV_ID_OSS, + sizeof(snd_seq_oss_reg_t), &dev) < 0) + return; + + emu->oss_synth = dev; + strcpy(dev->name, emu->name); + arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); + arg->type = SYNTH_TYPE_SAMPLE; + arg->subtype = SAMPLE_TYPE_AWE32; + arg->nvoices = emu->max_voices; + arg->oper = oss_callback; + arg->private_data = emu; + + /* register to OSS synth table */ + snd_device_register(emu->card, dev); +} + + +/* + * unregister + */ +void +snd_emux_detach_seq_oss(snd_emux_t *emu) +{ + if (emu->oss_synth) { + snd_device_free(emu->card, emu->oss_synth); + emu->oss_synth = NULL; + } +} + + +/* use port number as a unique soundfont client number */ +#define SF_CLIENT_NO(p) ((p) + 0x1000) + +/* + * open port for OSS sequencer + */ +static int +snd_emux_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure) +{ + snd_emux_t *emu; + snd_emux_port_t *p; + snd_seq_port_callback_t callback; + char tmpname[64]; + + emu = closure; + snd_assert(arg != NULL && emu != NULL, return -ENXIO); + + down(&emu->register_mutex); + + if (!snd_emux_inc_count(emu)) { + up(&emu->register_mutex); + return -EFAULT; + } + + memset(&callback, 0, sizeof(callback)); + callback.owner = THIS_MODULE; + callback.event_input = snd_emux_event_oss_input; + + sprintf(tmpname, "%s OSS Port", emu->name); + p = snd_emux_create_port(emu, tmpname, 32, + 1, &callback); + if (p == NULL) { + snd_printk("can't create port\n"); + snd_emux_dec_count(emu); + up(&emu->register_mutex); + return -ENOMEM; + } + + /* fill the argument data */ + arg->private_data = p; + arg->addr.client = p->chset.client; + arg->addr.port = p->chset.port; + p->oss_arg = arg; + + reset_port_mode(p, arg->seq_mode); + + snd_emux_reset_port(p); + + up(&emu->register_mutex); + return 0; +} + + +#define DEFAULT_DRUM_FLAGS ((1<<9) | (1<<25)) + +/* + * reset port mode + */ +static void +reset_port_mode(snd_emux_port_t *port, int midi_mode) +{ + if (midi_mode) { + port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_MIDI; + port->drum_flags = DEFAULT_DRUM_FLAGS; + port->volume_atten = 0; + port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_KEYPRESS; + } else { + port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_SYNTH; + port->drum_flags = 0; + port->volume_atten = 32; + port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_EVENTS; + } +} + + +/* + * close port + */ +static int +snd_emux_close_seq_oss(snd_seq_oss_arg_t *arg) +{ + snd_emux_t *emu; + snd_emux_port_t *p; + + snd_assert(arg != NULL, return -ENXIO); + p = arg->private_data; + snd_assert(p != NULL, return -ENXIO); + + emu = p->emu; + snd_assert(emu != NULL, return -ENXIO); + + down(&emu->register_mutex); + snd_emux_sounds_off_all(p); + snd_soundfont_close_check(emu->sflist, SF_CLIENT_NO(p->chset.port)); + snd_seq_event_port_detach(p->chset.client, p->chset.port); + snd_emux_dec_count(emu); + + up(&emu->register_mutex); + return 0; +} + + +/* + * load patch + */ +static int +snd_emux_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, + const char __user *buf, int offs, int count) +{ + snd_emux_t *emu; + snd_emux_port_t *p; + int rc; + + snd_assert(arg != NULL, return -ENXIO); + p = arg->private_data; + snd_assert(p != NULL, return -ENXIO); + + emu = p->emu; + snd_assert(emu != NULL, return -ENXIO); + + if (format == GUS_PATCH) + rc = snd_soundfont_load_guspatch(emu->sflist, buf, count, + SF_CLIENT_NO(p->chset.port)); + else if (format == SNDRV_OSS_SOUNDFONT_PATCH) { + soundfont_patch_info_t patch; + if (count < (int)sizeof(patch)) + rc = -EINVAL; + if (copy_from_user(&patch, buf, sizeof(patch))) + rc = -EFAULT; + if (patch.type >= SNDRV_SFNT_LOAD_INFO && + patch.type <= SNDRV_SFNT_PROBE_DATA) + rc = snd_soundfont_load(emu->sflist, buf, count, SF_CLIENT_NO(p->chset.port)); + else { + if (emu->ops.load_fx) + rc = emu->ops.load_fx(emu, patch.type, patch.optarg, buf, count); + else + rc = -EINVAL; + } + } else + rc = 0; + return rc; +} + + +/* + * ioctl + */ +static int +snd_emux_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg) +{ + snd_emux_port_t *p; + snd_emux_t *emu; + + snd_assert(arg != NULL, return -ENXIO); + p = arg->private_data; + snd_assert(p != NULL, return -ENXIO); + + emu = p->emu; + snd_assert(emu != NULL, return -ENXIO); + + switch (cmd) { + case SNDCTL_SEQ_RESETSAMPLES: + snd_soundfont_remove_samples(emu->sflist); + return 0; + + case SNDCTL_SYNTH_MEMAVL: + if (emu->memhdr) + return snd_util_mem_avail(emu->memhdr); + return 0; + } + + return 0; +} + + +/* + * reset device + */ +static int +snd_emux_reset_seq_oss(snd_seq_oss_arg_t *arg) +{ + snd_emux_port_t *p; + + snd_assert(arg != NULL, return -ENXIO); + p = arg->private_data; + snd_assert(p != NULL, return -ENXIO); + snd_emux_reset_port(p); + return 0; +} + + +/* + * receive raw events: only SEQ_PRIVATE is accepted. + */ +static int +snd_emux_event_oss_input(snd_seq_event_t *ev, int direct, void *private_data, + int atomic, int hop) +{ + snd_emux_t *emu; + snd_emux_port_t *p; + unsigned char cmd, *data; + + p = private_data; + snd_assert(p != NULL, return -EINVAL); + emu = p->emu; + snd_assert(emu != NULL, return -EINVAL); + if (ev->type != SNDRV_SEQ_EVENT_OSS) + return snd_emux_event_input(ev, direct, private_data, atomic, hop); + + data = ev->data.raw8.d; + /* only SEQ_PRIVATE is accepted */ + if (data[0] != 0xfe) + return 0; + cmd = data[2] & _EMUX_OSS_MODE_VALUE_MASK; + if (data[2] & _EMUX_OSS_MODE_FLAG) + emuspec_control(emu, p, cmd, data, atomic, hop); + else + gusspec_control(emu, p, cmd, data, atomic, hop); + return 0; +} + + +/* + * OSS/AWE driver specific h/w controls + */ +static void +emuspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, + unsigned char *event, int atomic, int hop) +{ + int voice; + unsigned short p1; + short p2; + int i; + snd_midi_channel_t *chan; + + voice = event[3]; + if (voice < 0 || voice >= port->chset.max_channels) + chan = NULL; + else + chan = &port->chset.channels[voice]; + + p1 = *(unsigned short *) &event[4]; + p2 = *(short *) &event[6]; + + switch (cmd) { +#if 0 /* don't do this atomically */ + case _EMUX_OSS_REMOVE_LAST_SAMPLES: + snd_soundfont_remove_unlocked(emu->sflist); + break; +#endif + case _EMUX_OSS_SEND_EFFECT: + if (chan) + snd_emux_send_effect_oss(port, chan, p1, p2); + break; + + case _EMUX_OSS_TERMINATE_ALL: + snd_emux_terminate_all(emu); + break; + + case _EMUX_OSS_TERMINATE_CHANNEL: + /*snd_emux_mute_channel(emu, chan);*/ + break; + case _EMUX_OSS_RESET_CHANNEL: + /*snd_emux_channel_init(chset, chan);*/ + break; + + case _EMUX_OSS_RELEASE_ALL: + fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop); + break; + case _EMUX_OSS_NOTEOFF_ALL: + fake_event(emu, port, voice, MIDI_CTL_ALL_SOUNDS_OFF, 0, atomic, hop); + break; + + case _EMUX_OSS_INITIAL_VOLUME: + if (p2) { + port->volume_atten = (short)p1; + snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME); + } + break; + + case _EMUX_OSS_CHN_PRESSURE: + if (chan) { + chan->midi_pressure = p1; + snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_FMMOD|SNDRV_EMUX_UPDATE_FM2FRQ2); + } + break; + + case _EMUX_OSS_CHANNEL_MODE: + reset_port_mode(port, p1); + snd_emux_reset_port(port); + break; + + case _EMUX_OSS_DRUM_CHANNELS: + port->drum_flags = *(unsigned int*)&event[4]; + for (i = 0; i < port->chset.max_channels; i++) { + chan = &port->chset.channels[i]; + chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0; + } + break; + + case _EMUX_OSS_MISC_MODE: + if (p1 < EMUX_MD_END) + port->ctrls[p1] = p2; + break; + case _EMUX_OSS_DEBUG_MODE: + break; + + default: + if (emu->ops.oss_ioctl) + emu->ops.oss_ioctl(emu, cmd, p1, p2); + break; + } +} + +/* + * GUS specific h/w controls + */ + +#include <linux/ultrasound.h> + +static void +gusspec_control(snd_emux_t *emu, snd_emux_port_t *port, int cmd, + unsigned char *event, int atomic, int hop) +{ + int voice; + unsigned short p1; + short p2; + int plong; + snd_midi_channel_t *chan; + + if (port->port_mode != SNDRV_EMUX_PORT_MODE_OSS_SYNTH) + return; + if (cmd == _GUS_NUMVOICES) + return; + voice = event[3]; + if (voice < 0 || voice >= port->chset.max_channels) + return; + + chan = &port->chset.channels[voice]; + + p1 = *(unsigned short *) &event[4]; + p2 = *(short *) &event[6]; + plong = *(int*) &event[4]; + + switch (cmd) { + case _GUS_VOICESAMPLE: + chan->midi_program = p1; + return; + + case _GUS_VOICEBALA: + /* 0 to 15 --> 0 to 127 */ + chan->control[MIDI_CTL_MSB_PAN] = (int)p1 << 3; + snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN); + return; + + case _GUS_VOICEVOL: + case _GUS_VOICEVOL2: + /* not supported yet */ + return; + + case _GUS_RAMPRANGE: + case _GUS_RAMPRATE: + case _GUS_RAMPMODE: + case _GUS_RAMPON: + case _GUS_RAMPOFF: + /* volume ramping not supported */ + return; + + case _GUS_VOLUME_SCALE: + return; + + case _GUS_VOICE_POS: +#ifdef SNDRV_EMUX_USE_RAW_EFFECT + snd_emux_send_effect(port, chan, EMUX_FX_SAMPLE_START, + (short)(plong & 0x7fff), + EMUX_FX_FLAG_SET); + snd_emux_send_effect(port, chan, EMUX_FX_COARSE_SAMPLE_START, + (plong >> 15) & 0xffff, + EMUX_FX_FLAG_SET); +#endif + return; + } +} + + +/* + * send an event to midi emulation + */ +static void +fake_event(snd_emux_t *emu, snd_emux_port_t *port, int ch, int param, int val, int atomic, int hop) +{ + snd_seq_event_t ev; + memset(&ev, 0, sizeof(ev)); + ev.type = SNDRV_SEQ_EVENT_CONTROLLER; + ev.data.control.channel = ch; + ev.data.control.param = param; + ev.data.control.value = val; + snd_emux_event_input(&ev, 0, port, atomic, hop); +} + +#endif /* CONFIG_SND_SEQUENCER_OSS */ |