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>
553 lines
14 KiB
C
553 lines
14 KiB
C
/*
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* synth callback routines for Emu10k1
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*
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* Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
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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 "emu10k1_synth_local.h"
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#include <sound/asoundef.h>
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/* voice status */
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enum {
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V_FREE=0, V_OFF, V_RELEASED, V_PLAYING, V_END
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};
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/* Keeps track of what we are finding */
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struct best_voice {
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unsigned int time;
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int voice;
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};
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/*
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* prototypes
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*/
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static void lookup_voices(struct snd_emux *emux, struct snd_emu10k1 *hw,
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struct best_voice *best, int active_only);
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static struct snd_emux_voice *get_voice(struct snd_emux *emux,
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struct snd_emux_port *port);
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static int start_voice(struct snd_emux_voice *vp);
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static void trigger_voice(struct snd_emux_voice *vp);
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static void release_voice(struct snd_emux_voice *vp);
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static void update_voice(struct snd_emux_voice *vp, int update);
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static void terminate_voice(struct snd_emux_voice *vp);
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static void free_voice(struct snd_emux_voice *vp);
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static void set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
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static void set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
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static void set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
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/*
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* Ensure a value is between two points
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* macro evaluates its args more than once, so changed to upper-case.
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*/
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#define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0)
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#define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0)
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/*
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* set up operators
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*/
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static struct snd_emux_operators emu10k1_ops = {
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.owner = THIS_MODULE,
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.get_voice = get_voice,
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.prepare = start_voice,
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.trigger = trigger_voice,
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.release = release_voice,
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.update = update_voice,
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.terminate = terminate_voice,
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.free_voice = free_voice,
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.sample_new = snd_emu10k1_sample_new,
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.sample_free = snd_emu10k1_sample_free,
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};
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void
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snd_emu10k1_ops_setup(struct snd_emux *emux)
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{
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emux->ops = emu10k1_ops;
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}
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/*
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* get more voice for pcm
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*
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* terminate most inactive voice and give it as a pcm voice.
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*/
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int
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snd_emu10k1_synth_get_voice(struct snd_emu10k1 *hw)
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{
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struct snd_emux *emu;
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struct snd_emux_voice *vp;
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struct best_voice best[V_END];
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unsigned long flags;
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int i;
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emu = hw->synth;
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spin_lock_irqsave(&emu->voice_lock, flags);
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lookup_voices(emu, hw, best, 1); /* no OFF voices */
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for (i = 0; i < V_END; i++) {
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if (best[i].voice >= 0) {
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int ch;
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vp = &emu->voices[best[i].voice];
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if ((ch = vp->ch) < 0) {
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/*
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printk(KERN_WARNING
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"synth_get_voice: ch < 0 (%d) ??", i);
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*/
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continue;
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}
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vp->emu->num_voices--;
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vp->ch = -1;
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vp->state = SNDRV_EMUX_ST_OFF;
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spin_unlock_irqrestore(&emu->voice_lock, flags);
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return ch;
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}
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}
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spin_unlock_irqrestore(&emu->voice_lock, flags);
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/* not found */
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return -ENOMEM;
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}
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/*
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* turn off the voice (not terminated)
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*/
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static void
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release_voice(struct snd_emux_voice *vp)
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{
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int dcysusv;
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struct snd_emu10k1 *hw;
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hw = vp->hw;
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dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease;
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snd_emu10k1_ptr_write(hw, DCYSUSM, vp->ch, dcysusv);
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dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease | DCYSUSV_CHANNELENABLE_MASK;
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snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, dcysusv);
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}
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/*
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* terminate the voice
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*/
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static void
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terminate_voice(struct snd_emux_voice *vp)
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{
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struct snd_emu10k1 *hw;
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if (snd_BUG_ON(!vp))
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return;
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hw = vp->hw;
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snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK);
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if (vp->block) {
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struct snd_emu10k1_memblk *emem;
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emem = (struct snd_emu10k1_memblk *)vp->block;
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if (emem->map_locked > 0)
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emem->map_locked--;
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}
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}
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/*
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* release the voice to system
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*/
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static void
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free_voice(struct snd_emux_voice *vp)
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{
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struct snd_emu10k1 *hw;
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hw = vp->hw;
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/* FIXME: emu10k1_synth is broken. */
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/* This can get called with hw == 0 */
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/* Problem apparent on plug, unplug then plug */
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/* on the Audigy 2 ZS Notebook. */
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if (hw && (vp->ch >= 0)) {
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snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00);
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snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK);
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// snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0);
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snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff);
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snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff);
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snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]);
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vp->emu->num_voices--;
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vp->ch = -1;
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}
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}
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/*
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* update registers
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*/
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static void
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update_voice(struct snd_emux_voice *vp, int update)
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{
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struct snd_emu10k1 *hw;
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hw = vp->hw;
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if (update & SNDRV_EMUX_UPDATE_VOLUME)
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snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol);
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if (update & SNDRV_EMUX_UPDATE_PITCH)
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snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch);
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if (update & SNDRV_EMUX_UPDATE_PAN) {
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snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan);
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snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux);
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}
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if (update & SNDRV_EMUX_UPDATE_FMMOD)
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set_fmmod(hw, vp);
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if (update & SNDRV_EMUX_UPDATE_TREMFREQ)
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snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq);
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if (update & SNDRV_EMUX_UPDATE_FM2FRQ2)
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set_fm2frq2(hw, vp);
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if (update & SNDRV_EMUX_UPDATE_Q)
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set_filterQ(hw, vp);
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}
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/*
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* look up voice table - get the best voice in order of preference
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*/
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/* spinlock held! */
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static void
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lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw,
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struct best_voice *best, int active_only)
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{
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struct snd_emux_voice *vp;
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struct best_voice *bp;
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int i;
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for (i = 0; i < V_END; i++) {
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best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */;
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best[i].voice = -1;
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}
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/*
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* Go through them all and get a best one to use.
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* NOTE: could also look at volume and pick the quietest one.
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*/
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for (i = 0; i < emu->max_voices; i++) {
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int state, val;
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vp = &emu->voices[i];
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state = vp->state;
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if (state == SNDRV_EMUX_ST_OFF) {
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if (vp->ch < 0) {
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if (active_only)
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continue;
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bp = best + V_FREE;
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} else
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bp = best + V_OFF;
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}
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else if (state == SNDRV_EMUX_ST_RELEASED ||
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state == SNDRV_EMUX_ST_PENDING) {
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bp = best + V_RELEASED;
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#if 1
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val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch);
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if (! val)
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bp = best + V_OFF;
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#endif
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}
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else if (state == SNDRV_EMUX_ST_STANDBY)
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continue;
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else if (state & SNDRV_EMUX_ST_ON)
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bp = best + V_PLAYING;
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else
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continue;
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/* check if sample is finished playing (non-looping only) */
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if (bp != best + V_OFF && bp != best + V_FREE &&
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(vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) {
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val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch);
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if (val >= vp->reg.loopstart)
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bp = best + V_OFF;
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}
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if (vp->time < bp->time) {
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bp->time = vp->time;
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bp->voice = i;
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}
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}
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}
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/*
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* get an empty voice
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*
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* emu->voice_lock is already held.
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*/
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static struct snd_emux_voice *
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get_voice(struct snd_emux *emu, struct snd_emux_port *port)
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{
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struct snd_emu10k1 *hw;
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struct snd_emux_voice *vp;
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struct best_voice best[V_END];
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int i;
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hw = emu->hw;
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lookup_voices(emu, hw, best, 0);
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for (i = 0; i < V_END; i++) {
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if (best[i].voice >= 0) {
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vp = &emu->voices[best[i].voice];
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if (vp->ch < 0) {
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/* allocate a voice */
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struct snd_emu10k1_voice *hwvoice;
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if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL)
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continue;
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vp->ch = hwvoice->number;
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emu->num_voices++;
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}
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return vp;
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}
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}
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/* not found */
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return NULL;
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}
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/*
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* prepare envelopes and LFOs
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*/
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static int
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start_voice(struct snd_emux_voice *vp)
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{
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unsigned int temp;
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int ch;
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unsigned int addr, mapped_offset;
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struct snd_midi_channel *chan;
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struct snd_emu10k1 *hw;
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struct snd_emu10k1_memblk *emem;
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hw = vp->hw;
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ch = vp->ch;
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if (snd_BUG_ON(ch < 0))
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return -EINVAL;
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chan = vp->chan;
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emem = (struct snd_emu10k1_memblk *)vp->block;
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if (emem == NULL)
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return -EINVAL;
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emem->map_locked++;
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if (snd_emu10k1_memblk_map(hw, emem) < 0) {
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/* printk(KERN_ERR "emu: cannot map!\n"); */
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return -ENOMEM;
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}
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mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1;
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vp->reg.start += mapped_offset;
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vp->reg.end += mapped_offset;
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vp->reg.loopstart += mapped_offset;
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vp->reg.loopend += mapped_offset;
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/* set channel routing */
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/* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */
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if (hw->audigy) {
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temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) |
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(FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24);
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snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp);
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} else {
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temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) |
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(FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28);
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snd_emu10k1_ptr_write(hw, FXRT, ch, temp);
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}
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/* channel to be silent and idle */
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snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0000);
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snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF);
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snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF);
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snd_emu10k1_ptr_write(hw, PTRX, ch, 0);
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snd_emu10k1_ptr_write(hw, CPF, ch, 0);
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/* set pitch offset */
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snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch);
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/* set envelope parameters */
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snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay);
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snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld);
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snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus);
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snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay);
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snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld);
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/* decay/sustain parameter for volume envelope is used
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for triggerg the voice */
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/* cutoff and volume */
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temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol;
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snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp);
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/* modulation envelope heights */
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snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe);
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/* lfo1/2 delay */
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snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay);
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snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay);
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/* lfo1 pitch & cutoff shift */
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set_fmmod(hw, vp);
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/* lfo1 volume & freq */
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snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq);
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/* lfo2 pitch & freq */
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set_fm2frq2(hw, vp);
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/* reverb and loop start (reverb 8bit, MSB) */
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temp = vp->reg.parm.reverb;
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temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10;
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LIMITMAX(temp, 255);
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addr = vp->reg.loopstart;
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snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr);
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/* chorus & loop end (chorus 8bit, MSB) */
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addr = vp->reg.loopend;
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temp = vp->reg.parm.chorus;
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temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10;
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LIMITMAX(temp, 255);
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temp = (temp <<24) | addr;
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snd_emu10k1_ptr_write(hw, DSL, ch, temp);
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/* clear filter delay memory */
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snd_emu10k1_ptr_write(hw, Z1, ch, 0);
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snd_emu10k1_ptr_write(hw, Z2, ch, 0);
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/* invalidate maps */
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temp = (hw->silent_page.addr << 1) | MAP_PTI_MASK;
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snd_emu10k1_ptr_write(hw, MAPA, ch, temp);
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snd_emu10k1_ptr_write(hw, MAPB, ch, temp);
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#if 0
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/* cache */
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{
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unsigned int val, sample;
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val = 32;
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if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS)
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sample = 0x80808080;
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else {
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sample = 0;
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val *= 2;
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}
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/* cache */
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snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16);
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snd_emu10k1_ptr_write(hw, CDE, ch, sample);
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snd_emu10k1_ptr_write(hw, CDF, ch, sample);
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/* invalidate maps */
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temp = ((unsigned int)hw->silent_page.addr << 1) | MAP_PTI_MASK;
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snd_emu10k1_ptr_write(hw, MAPA, ch, temp);
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snd_emu10k1_ptr_write(hw, MAPB, ch, temp);
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/* fill cache */
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val -= 4;
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val <<= 25;
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val |= 0x1c << 16;
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snd_emu10k1_ptr_write(hw, CCR, ch, val);
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}
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#endif
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/* Q & current address (Q 4bit value, MSB) */
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addr = vp->reg.start;
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temp = vp->reg.parm.filterQ;
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temp = (temp<<28) | addr;
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if (vp->apitch < 0xe400)
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temp |= CCCA_INTERPROM_0;
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else {
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unsigned int shift = (vp->apitch - 0xe000) >> 10;
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temp |= shift << 25;
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}
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if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS)
|
|
temp |= CCCA_8BITSELECT;
|
|
snd_emu10k1_ptr_write(hw, CCCA, ch, temp);
|
|
|
|
/* reset volume */
|
|
temp = (unsigned int)vp->vtarget << 16;
|
|
snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget);
|
|
snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Start envelope
|
|
*/
|
|
static void
|
|
trigger_voice(struct snd_emux_voice *vp)
|
|
{
|
|
unsigned int temp, ptarget;
|
|
struct snd_emu10k1 *hw;
|
|
struct snd_emu10k1_memblk *emem;
|
|
|
|
hw = vp->hw;
|
|
|
|
emem = (struct snd_emu10k1_memblk *)vp->block;
|
|
if (! emem || emem->mapped_page < 0)
|
|
return; /* not mapped */
|
|
|
|
#if 0
|
|
ptarget = (unsigned int)vp->ptarget << 16;
|
|
#else
|
|
ptarget = IP_TO_CP(vp->apitch);
|
|
#endif
|
|
/* set pitch target and pan (volume) */
|
|
temp = ptarget | (vp->apan << 8) | vp->aaux;
|
|
snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp);
|
|
|
|
/* pitch target */
|
|
snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget);
|
|
|
|
/* trigger voice */
|
|
snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK);
|
|
}
|
|
|
|
#define MOD_SENSE 18
|
|
|
|
/* set lfo1 modulation height and cutoff */
|
|
static void
|
|
set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
|
|
{
|
|
unsigned short fmmod;
|
|
short pitch;
|
|
unsigned char cutoff;
|
|
int modulation;
|
|
|
|
pitch = (char)(vp->reg.parm.fmmod>>8);
|
|
cutoff = (vp->reg.parm.fmmod & 0xff);
|
|
modulation = vp->chan->gm_modulation + vp->chan->midi_pressure;
|
|
pitch += (MOD_SENSE * modulation) / 1200;
|
|
LIMITVALUE(pitch, -128, 127);
|
|
fmmod = ((unsigned char)pitch<<8) | cutoff;
|
|
snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod);
|
|
}
|
|
|
|
/* set lfo2 pitch & frequency */
|
|
static void
|
|
set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
|
|
{
|
|
unsigned short fm2frq2;
|
|
short pitch;
|
|
unsigned char freq;
|
|
int modulation;
|
|
|
|
pitch = (char)(vp->reg.parm.fm2frq2>>8);
|
|
freq = vp->reg.parm.fm2frq2 & 0xff;
|
|
modulation = vp->chan->gm_modulation + vp->chan->midi_pressure;
|
|
pitch += (MOD_SENSE * modulation) / 1200;
|
|
LIMITVALUE(pitch, -128, 127);
|
|
fm2frq2 = ((unsigned char)pitch<<8) | freq;
|
|
snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2);
|
|
}
|
|
|
|
/* set filterQ */
|
|
static void
|
|
set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
|
|
{
|
|
unsigned int val;
|
|
val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE;
|
|
val |= (vp->reg.parm.filterQ << 28);
|
|
snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val);
|
|
}
|