2005-04-16 16:20:36 -06:00
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/*
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* Copyright (c) by Uros Bizjak <uros@kss-loka.si>
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*
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* Midi synth routines for OPL2/OPL3/OPL4 FM
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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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*/
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#undef DEBUG_ALLOC
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#undef DEBUG_MIDI
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#include "opl3_voice.h"
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#include <sound/asoundef.h>
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extern char snd_opl3_regmap[MAX_OPL2_VOICES][4];
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extern int use_internal_drums;
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/*
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* The next table looks magical, but it certainly is not. Its values have
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* been calculated as table[i]=8*log(i/64)/log(2) with an obvious exception
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* for i=0. This log-table converts a linear volume-scaling (0..127) to a
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* logarithmic scaling as present in the FM-synthesizer chips. so : Volume
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* 64 = 0 db = relative volume 0 and: Volume 32 = -6 db = relative
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* volume -8 it was implemented as a table because it is only 128 bytes and
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* it saves a lot of log() calculations. (Rob Hooft <hooft@chem.ruu.nl>)
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*/
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static char opl3_volume_table[128] =
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{
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-63, -48, -40, -35, -32, -29, -27, -26,
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-24, -23, -21, -20, -19, -18, -18, -17,
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-16, -15, -15, -14, -13, -13, -12, -12,
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-11, -11, -10, -10, -10, -9, -9, -8,
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-8, -8, -7, -7, -7, -6, -6, -6,
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-5, -5, -5, -5, -4, -4, -4, -4,
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-3, -3, -3, -3, -2, -2, -2, -2,
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-2, -1, -1, -1, -1, 0, 0, 0,
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0, 0, 0, 1, 1, 1, 1, 1,
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1, 2, 2, 2, 2, 2, 2, 2,
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3, 3, 3, 3, 3, 3, 3, 4,
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4, 4, 4, 4, 4, 4, 4, 5,
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5, 5, 5, 5, 5, 5, 5, 5,
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6, 6, 6, 6, 6, 6, 6, 6,
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6, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 8, 8, 8, 8, 8
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};
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void snd_opl3_calc_volume(unsigned char *volbyte, int vel,
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2005-11-17 06:13:14 -07:00
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struct snd_midi_channel *chan)
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2005-04-16 16:20:36 -06:00
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{
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int oldvol, newvol, n;
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int volume;
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volume = (vel * chan->gm_volume * chan->gm_expression) / (127*127);
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if (volume > 127)
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volume = 127;
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oldvol = OPL3_TOTAL_LEVEL_MASK - (*volbyte & OPL3_TOTAL_LEVEL_MASK);
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newvol = opl3_volume_table[volume] + oldvol;
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if (newvol > OPL3_TOTAL_LEVEL_MASK)
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newvol = OPL3_TOTAL_LEVEL_MASK;
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else if (newvol < 0)
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newvol = 0;
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n = OPL3_TOTAL_LEVEL_MASK - (newvol & OPL3_TOTAL_LEVEL_MASK);
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*volbyte = (*volbyte & OPL3_KSL_MASK) | (n & OPL3_TOTAL_LEVEL_MASK);
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}
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/*
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* Converts the note frequency to block and fnum values for the FM chip
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*/
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static short opl3_note_table[16] =
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{
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305, 323, /* for pitch bending, -2 semitones */
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343, 363, 385, 408, 432, 458, 485, 514, 544, 577, 611, 647,
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686, 726 /* for pitch bending, +2 semitones */
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};
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static void snd_opl3_calc_pitch(unsigned char *fnum, unsigned char *blocknum,
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2005-11-17 06:13:14 -07:00
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int note, struct snd_midi_channel *chan)
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2005-04-16 16:20:36 -06:00
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{
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int block = ((note / 12) & 0x07) - 1;
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int idx = (note % 12) + 2;
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int freq;
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if (chan->midi_pitchbend) {
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int pitchbend = chan->midi_pitchbend;
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int segment;
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if (pitchbend > 0x1FFF)
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pitchbend = 0x1FFF;
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segment = pitchbend / 0x1000;
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freq = opl3_note_table[idx+segment];
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freq += ((opl3_note_table[idx+segment+1] - freq) *
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(pitchbend % 0x1000)) / 0x1000;
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} else {
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freq = opl3_note_table[idx];
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}
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*fnum = (unsigned char) freq;
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*blocknum = ((freq >> 8) & OPL3_FNUM_HIGH_MASK) |
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((block << 2) & OPL3_BLOCKNUM_MASK);
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}
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#ifdef DEBUG_ALLOC
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2005-11-17 06:13:14 -07:00
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static void debug_alloc(struct snd_opl3 *opl3, char *s, int voice) {
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2005-04-16 16:20:36 -06:00
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int i;
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char *str = "x.24";
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2009-02-05 07:51:50 -07:00
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printk(KERN_DEBUG "time %.5i: %s [%.2i]: ", opl3->use_time, s, voice);
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2005-04-16 16:20:36 -06:00
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for (i = 0; i < opl3->max_voices; i++)
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printk("%c", *(str + opl3->voices[i].state + 1));
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printk("\n");
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}
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#endif
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/*
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* Get a FM voice (channel) to play a note on.
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*/
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2005-11-17 06:13:14 -07:00
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static int opl3_get_voice(struct snd_opl3 *opl3, int instr_4op,
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struct snd_midi_channel *chan) {
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2005-04-16 16:20:36 -06:00
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int chan_4op_1; /* first voice for 4op instrument */
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int chan_4op_2; /* second voice for 4op instrument */
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2005-11-17 06:13:14 -07:00
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struct snd_opl3_voice *vp, *vp2;
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2005-04-16 16:20:36 -06:00
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unsigned int voice_time;
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int i;
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#ifdef DEBUG_ALLOC
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char *alloc_type[3] = { "FREE ", "CHEAP ", "EXPENSIVE" };
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#endif
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/* This is our "allocation cost" table */
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enum {
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FREE = 0, CHEAP, EXPENSIVE, END
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};
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/* Keeps track of what we are finding */
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struct best {
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unsigned int time;
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int voice;
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} best[END];
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struct best *bp;
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for (i = 0; i < 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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/* Look through all the channels for the most suitable. */
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for (i = 0; i < opl3->max_voices; i++) {
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vp = &opl3->voices[i];
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if (vp->state == SNDRV_OPL3_ST_NOT_AVAIL)
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/* skip unavailable channels, allocated by
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drum voices or by bounded 4op voices) */
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continue;
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voice_time = vp->time;
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bp = best;
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chan_4op_1 = ((i < 3) || (i > 8 && i < 12));
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chan_4op_2 = ((i > 2 && i < 6) || (i > 11 && i < 15));
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if (instr_4op) {
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/* allocate 4op voice */
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/* skip channels unavailable to 4op instrument */
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if (!chan_4op_1)
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continue;
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if (vp->state)
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/* kill one voice, CHEAP */
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bp++;
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/* get state of bounded 2op channel
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to be allocated for 4op instrument */
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vp2 = &opl3->voices[i + 3];
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if (vp2->state == SNDRV_OPL3_ST_ON_2OP) {
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/* kill two voices, EXPENSIVE */
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bp++;
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voice_time = (voice_time > vp->time) ?
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voice_time : vp->time;
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}
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} else {
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/* allocate 2op voice */
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if ((chan_4op_1) || (chan_4op_2))
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/* use bounded channels for 2op, CHEAP */
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bp++;
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else if (vp->state)
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/* kill one voice on 2op channel, CHEAP */
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bp++;
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/* raise kill cost to EXPENSIVE for all channels */
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if (vp->state)
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bp++;
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}
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if (voice_time < bp->time) {
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bp->time = voice_time;
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bp->voice = i;
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}
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}
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for (i = 0; i < END; i++) {
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if (best[i].voice >= 0) {
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#ifdef DEBUG_ALLOC
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2009-02-05 07:51:50 -07:00
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printk(KERN_DEBUG "%s %iop allocation on voice %i\n",
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2005-04-16 16:20:36 -06:00
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alloc_type[i], instr_4op ? 4 : 2,
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best[i].voice);
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#endif
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return best[i].voice;
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}
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}
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/* not found */
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return -1;
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}
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/* ------------------------------ */
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/*
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* System timer interrupt function
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*/
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void snd_opl3_timer_func(unsigned long data)
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{
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2005-11-17 06:13:14 -07:00
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struct snd_opl3 *opl3 = (struct snd_opl3 *)data;
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2005-11-18 10:52:14 -07:00
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unsigned long flags;
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2005-04-16 16:20:36 -06:00
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int again = 0;
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int i;
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2005-11-18 10:52:14 -07:00
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spin_lock_irqsave(&opl3->sys_timer_lock, flags);
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2005-04-16 16:20:36 -06:00
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for (i = 0; i < opl3->max_voices; i++) {
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2005-11-17 06:13:14 -07:00
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struct snd_opl3_voice *vp = &opl3->voices[i];
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2005-04-16 16:20:36 -06:00
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if (vp->state > 0 && vp->note_off_check) {
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if (vp->note_off == jiffies)
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snd_opl3_note_off(opl3, vp->note, 0, vp->chan);
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else
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again++;
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}
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}
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if (again) {
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opl3->tlist.expires = jiffies + 1; /* invoke again */
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add_timer(&opl3->tlist);
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} else {
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opl3->sys_timer_status = 0;
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}
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2005-11-18 10:52:14 -07:00
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spin_unlock_irqrestore(&opl3->sys_timer_lock, flags);
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2005-04-16 16:20:36 -06:00
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}
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/*
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* Start system timer
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*/
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2005-11-17 06:13:14 -07:00
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static void snd_opl3_start_timer(struct snd_opl3 *opl3)
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2005-04-16 16:20:36 -06:00
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{
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unsigned long flags;
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spin_lock_irqsave(&opl3->sys_timer_lock, flags);
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if (! opl3->sys_timer_status) {
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opl3->tlist.expires = jiffies + 1;
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add_timer(&opl3->tlist);
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opl3->sys_timer_status = 1;
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}
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spin_unlock_irqrestore(&opl3->sys_timer_lock, flags);
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}
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/* ------------------------------ */
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static int snd_opl3_oss_map[MAX_OPL3_VOICES] = {
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0, 1, 2, 9, 10, 11, 6, 7, 8, 15, 16, 17, 3, 4 ,5, 12, 13, 14
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};
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/*
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* Start a note.
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*/
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2005-11-17 06:13:14 -07:00
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void snd_opl3_note_on(void *p, int note, int vel, struct snd_midi_channel *chan)
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2005-04-16 16:20:36 -06:00
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{
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2005-11-17 06:13:14 -07:00
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struct snd_opl3 *opl3;
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2005-04-16 16:20:36 -06:00
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int instr_4op;
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int voice;
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2005-11-17 06:13:14 -07:00
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struct snd_opl3_voice *vp, *vp2;
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2005-04-16 16:20:36 -06:00
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unsigned short connect_mask;
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unsigned char connection;
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unsigned char vol_op[4];
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int extra_prg = 0;
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unsigned short reg_side;
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unsigned char op_offset;
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unsigned char voice_offset;
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unsigned short opl3_reg;
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unsigned char reg_val;
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2007-10-30 04:49:22 -06:00
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unsigned char prg, bank;
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2005-04-16 16:20:36 -06:00
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int key = note;
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unsigned char fnum, blocknum;
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int i;
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2007-10-30 04:49:22 -06:00
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struct fm_patch *patch;
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2005-11-17 06:13:14 -07:00
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struct fm_instrument *fm;
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2005-04-16 16:20:36 -06:00
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unsigned long flags;
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opl3 = p;
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#ifdef DEBUG_MIDI
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2009-02-05 07:51:50 -07:00
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snd_printk(KERN_DEBUG "Note on, ch %i, inst %i, note %i, vel %i\n",
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2005-04-16 16:20:36 -06:00
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chan->number, chan->midi_program, note, vel);
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#endif
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/* in SYNTH mode, application takes care of voices */
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/* in SEQ mode, drum voice numbers are notes on drum channel */
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if (opl3->synth_mode == SNDRV_OPL3_MODE_SEQ) {
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if (chan->drum_channel) {
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/* percussion instruments are located in bank 128 */
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2007-10-30 04:49:22 -06:00
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bank = 128;
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prg = note;
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2005-04-16 16:20:36 -06:00
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} else {
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2007-10-30 04:49:22 -06:00
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bank = chan->gm_bank_select;
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prg = chan->midi_program;
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2005-04-16 16:20:36 -06:00
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}
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} else {
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/* Prepare for OSS mode */
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|
|
if (chan->number >= MAX_OPL3_VOICES)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* OSS instruments are located in bank 127 */
|
2007-10-30 04:49:22 -06:00
|
|
|
bank = 127;
|
|
|
|
prg = chan->midi_program;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_irqsave(&opl3->voice_lock, flags);
|
|
|
|
|
|
|
|
if (use_internal_drums) {
|
|
|
|
snd_opl3_drum_switch(opl3, note, vel, 1, chan);
|
|
|
|
spin_unlock_irqrestore(&opl3->voice_lock, flags);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
__extra_prg:
|
2007-10-30 04:49:22 -06:00
|
|
|
patch = snd_opl3_find_patch(opl3, prg, bank, 0);
|
|
|
|
if (!patch) {
|
2005-04-16 16:20:36 -06:00
|
|
|
spin_unlock_irqrestore(&opl3->voice_lock, flags);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2007-10-30 04:49:22 -06:00
|
|
|
fm = &patch->inst;
|
|
|
|
switch (patch->type) {
|
2005-04-16 16:20:36 -06:00
|
|
|
case FM_PATCH_OPL2:
|
|
|
|
instr_4op = 0;
|
|
|
|
break;
|
|
|
|
case FM_PATCH_OPL3:
|
|
|
|
if (opl3->hardware >= OPL3_HW_OPL3) {
|
|
|
|
instr_4op = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
spin_unlock_irqrestore(&opl3->voice_lock, flags);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG " --> OPL%i instrument: %s\n",
|
2007-10-30 04:49:22 -06:00
|
|
|
instr_4op ? 3 : 2, patch->name);
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
/* in SYNTH mode, application takes care of voices */
|
|
|
|
/* in SEQ mode, allocate voice on free OPL3 channel */
|
|
|
|
if (opl3->synth_mode == SNDRV_OPL3_MODE_SEQ) {
|
|
|
|
voice = opl3_get_voice(opl3, instr_4op, chan);
|
|
|
|
} else {
|
|
|
|
/* remap OSS voice */
|
|
|
|
voice = snd_opl3_oss_map[chan->number];
|
|
|
|
}
|
|
|
|
|
|
|
|
if (voice < MAX_OPL2_VOICES) {
|
|
|
|
/* Left register block for voices 0 .. 8 */
|
|
|
|
reg_side = OPL3_LEFT;
|
|
|
|
voice_offset = voice;
|
|
|
|
connect_mask = (OPL3_LEFT_4OP_0 << voice_offset) & 0x07;
|
|
|
|
} else {
|
|
|
|
/* Right register block for voices 9 .. 17 */
|
|
|
|
reg_side = OPL3_RIGHT;
|
|
|
|
voice_offset = voice - MAX_OPL2_VOICES;
|
|
|
|
connect_mask = (OPL3_RIGHT_4OP_0 << voice_offset) & 0x38;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* kill voice on channel */
|
|
|
|
vp = &opl3->voices[voice];
|
|
|
|
if (vp->state > 0) {
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_KEYON_BLOCK + voice_offset);
|
|
|
|
reg_val = vp->keyon_reg & ~OPL3_KEYON_BIT;
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
}
|
|
|
|
if (instr_4op) {
|
|
|
|
vp2 = &opl3->voices[voice + 3];
|
|
|
|
if (vp->state > 0) {
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_KEYON_BLOCK +
|
|
|
|
voice_offset + 3);
|
|
|
|
reg_val = vp->keyon_reg & ~OPL3_KEYON_BIT;
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* set connection register */
|
|
|
|
if (instr_4op) {
|
|
|
|
if ((opl3->connection_reg ^ connect_mask) & connect_mask) {
|
|
|
|
opl3->connection_reg |= connect_mask;
|
|
|
|
/* set connection bit */
|
|
|
|
opl3_reg = OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT;
|
|
|
|
opl3->command(opl3, opl3_reg, opl3->connection_reg);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if ((opl3->connection_reg ^ ~connect_mask) & connect_mask) {
|
|
|
|
opl3->connection_reg &= ~connect_mask;
|
|
|
|
/* clear connection bit */
|
|
|
|
opl3_reg = OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT;
|
|
|
|
opl3->command(opl3, opl3_reg, opl3->connection_reg);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG " --> setting OPL3 connection: 0x%x\n",
|
2005-04-16 16:20:36 -06:00
|
|
|
opl3->connection_reg);
|
|
|
|
#endif
|
|
|
|
/*
|
|
|
|
* calculate volume depending on connection
|
|
|
|
* between FM operators (see include/opl3.h)
|
|
|
|
*/
|
|
|
|
for (i = 0; i < (instr_4op ? 4 : 2); i++)
|
|
|
|
vol_op[i] = fm->op[i].ksl_level;
|
|
|
|
|
|
|
|
connection = fm->feedback_connection[0] & 0x01;
|
|
|
|
if (instr_4op) {
|
|
|
|
connection <<= 1;
|
|
|
|
connection |= fm->feedback_connection[1] & 0x01;
|
|
|
|
|
|
|
|
snd_opl3_calc_volume(&vol_op[3], vel, chan);
|
|
|
|
switch (connection) {
|
|
|
|
case 0x03:
|
|
|
|
snd_opl3_calc_volume(&vol_op[2], vel, chan);
|
|
|
|
/* fallthru */
|
|
|
|
case 0x02:
|
|
|
|
snd_opl3_calc_volume(&vol_op[0], vel, chan);
|
|
|
|
break;
|
|
|
|
case 0x01:
|
|
|
|
snd_opl3_calc_volume(&vol_op[1], vel, chan);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
snd_opl3_calc_volume(&vol_op[1], vel, chan);
|
|
|
|
if (connection)
|
|
|
|
snd_opl3_calc_volume(&vol_op[0], vel, chan);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Program the FM voice characteristics */
|
|
|
|
for (i = 0; i < (instr_4op ? 4 : 2); i++) {
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG " --> programming operator %i\n", i);
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
op_offset = snd_opl3_regmap[voice_offset][i];
|
|
|
|
|
|
|
|
/* Set OPL3 AM_VIB register of requested voice/operator */
|
|
|
|
reg_val = fm->op[i].am_vib;
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_AM_VIB + op_offset);
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
|
|
|
|
/* Set OPL3 KSL_LEVEL register of requested voice/operator */
|
|
|
|
reg_val = vol_op[i];
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_KSL_LEVEL + op_offset);
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
|
|
|
|
/* Set OPL3 ATTACK_DECAY register of requested voice/operator */
|
|
|
|
reg_val = fm->op[i].attack_decay;
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_ATTACK_DECAY + op_offset);
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
|
|
|
|
/* Set OPL3 SUSTAIN_RELEASE register of requested voice/operator */
|
|
|
|
reg_val = fm->op[i].sustain_release;
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_SUSTAIN_RELEASE + op_offset);
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
|
|
|
|
/* Select waveform */
|
|
|
|
reg_val = fm->op[i].wave_select;
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_WAVE_SELECT + op_offset);
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set operator feedback and 2op inter-operator connection */
|
|
|
|
reg_val = fm->feedback_connection[0];
|
|
|
|
/* Set output voice connection */
|
|
|
|
reg_val |= OPL3_STEREO_BITS;
|
|
|
|
if (chan->gm_pan < 43)
|
|
|
|
reg_val &= ~OPL3_VOICE_TO_RIGHT;
|
|
|
|
if (chan->gm_pan > 85)
|
|
|
|
reg_val &= ~OPL3_VOICE_TO_LEFT;
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_FEEDBACK_CONNECTION + voice_offset);
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
|
|
|
|
if (instr_4op) {
|
|
|
|
/* Set 4op inter-operator connection */
|
|
|
|
reg_val = fm->feedback_connection[1] & OPL3_CONNECTION_BIT;
|
|
|
|
/* Set output voice connection */
|
|
|
|
reg_val |= OPL3_STEREO_BITS;
|
|
|
|
if (chan->gm_pan < 43)
|
|
|
|
reg_val &= ~OPL3_VOICE_TO_RIGHT;
|
|
|
|
if (chan->gm_pan > 85)
|
|
|
|
reg_val &= ~OPL3_VOICE_TO_LEFT;
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_FEEDBACK_CONNECTION +
|
|
|
|
voice_offset + 3);
|
|
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Special treatment of percussion notes for fm:
|
|
|
|
* Requested pitch is really program, and pitch for
|
|
|
|
* device is whatever was specified in the patch library.
|
|
|
|
*/
|
|
|
|
if (fm->fix_key)
|
|
|
|
note = fm->fix_key;
|
|
|
|
/*
|
|
|
|
* use transpose if defined in patch library
|
|
|
|
*/
|
|
|
|
if (fm->trnsps)
|
|
|
|
note += (fm->trnsps - 64);
|
|
|
|
|
|
|
|
snd_opl3_calc_pitch(&fnum, &blocknum, note, chan);
|
|
|
|
|
|
|
|
/* Set OPL3 FNUM_LOW register of requested voice */
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_FNUM_LOW + voice_offset);
|
|
|
|
opl3->command(opl3, opl3_reg, fnum);
|
|
|
|
|
|
|
|
opl3->voices[voice].keyon_reg = blocknum;
|
|
|
|
|
|
|
|
/* Set output sound flag */
|
|
|
|
blocknum |= OPL3_KEYON_BIT;
|
|
|
|
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG " --> trigger voice %i\n", voice);
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
/* Set OPL3 KEYON_BLOCK register of requested voice */
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_KEYON_BLOCK + voice_offset);
|
|
|
|
opl3->command(opl3, opl3_reg, blocknum);
|
|
|
|
|
|
|
|
/* kill note after fixed duration (in centiseconds) */
|
|
|
|
if (fm->fix_dur) {
|
|
|
|
opl3->voices[voice].note_off = jiffies +
|
|
|
|
(fm->fix_dur * HZ) / 100;
|
|
|
|
snd_opl3_start_timer(opl3);
|
|
|
|
opl3->voices[voice].note_off_check = 1;
|
|
|
|
} else
|
|
|
|
opl3->voices[voice].note_off_check = 0;
|
|
|
|
|
|
|
|
/* get extra pgm, but avoid possible loops */
|
|
|
|
extra_prg = (extra_prg) ? 0 : fm->modes;
|
|
|
|
|
|
|
|
/* do the bookkeeping */
|
|
|
|
vp->time = opl3->use_time++;
|
|
|
|
vp->note = key;
|
|
|
|
vp->chan = chan;
|
|
|
|
|
|
|
|
if (instr_4op) {
|
|
|
|
vp->state = SNDRV_OPL3_ST_ON_4OP;
|
|
|
|
|
|
|
|
vp2 = &opl3->voices[voice + 3];
|
|
|
|
vp2->time = opl3->use_time++;
|
|
|
|
vp2->note = key;
|
|
|
|
vp2->chan = chan;
|
|
|
|
vp2->state = SNDRV_OPL3_ST_NOT_AVAIL;
|
|
|
|
} else {
|
|
|
|
if (vp->state == SNDRV_OPL3_ST_ON_4OP) {
|
|
|
|
/* 4op killed by 2op, release bounded voice */
|
|
|
|
vp2 = &opl3->voices[voice + 3];
|
|
|
|
vp2->time = opl3->use_time++;
|
|
|
|
vp2->state = SNDRV_OPL3_ST_OFF;
|
|
|
|
}
|
|
|
|
vp->state = SNDRV_OPL3_ST_ON_2OP;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG_ALLOC
|
|
|
|
debug_alloc(opl3, "note on ", voice);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* allocate extra program if specified in patch library */
|
|
|
|
if (extra_prg) {
|
|
|
|
if (extra_prg > 128) {
|
2007-10-30 04:49:22 -06:00
|
|
|
bank = 128;
|
2005-04-16 16:20:36 -06:00
|
|
|
/* percussions start at 35 */
|
2007-10-30 04:49:22 -06:00
|
|
|
prg = extra_prg - 128 + 35 - 1;
|
2005-04-16 16:20:36 -06:00
|
|
|
} else {
|
2007-10-30 04:49:22 -06:00
|
|
|
bank = 0;
|
|
|
|
prg = extra_prg - 1;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG " *** allocating extra program\n");
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
goto __extra_prg;
|
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&opl3->voice_lock, flags);
|
|
|
|
}
|
|
|
|
|
2005-11-17 06:13:14 -07:00
|
|
|
static void snd_opl3_kill_voice(struct snd_opl3 *opl3, int voice)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
unsigned short reg_side;
|
|
|
|
unsigned char voice_offset;
|
|
|
|
unsigned short opl3_reg;
|
|
|
|
|
2005-11-17 06:13:14 -07:00
|
|
|
struct snd_opl3_voice *vp, *vp2;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-08-08 09:12:47 -06:00
|
|
|
if (snd_BUG_ON(voice >= MAX_OPL3_VOICES))
|
|
|
|
return;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
vp = &opl3->voices[voice];
|
|
|
|
if (voice < MAX_OPL2_VOICES) {
|
|
|
|
/* Left register block for voices 0 .. 8 */
|
|
|
|
reg_side = OPL3_LEFT;
|
|
|
|
voice_offset = voice;
|
|
|
|
} else {
|
|
|
|
/* Right register block for voices 9 .. 17 */
|
|
|
|
reg_side = OPL3_RIGHT;
|
|
|
|
voice_offset = voice - MAX_OPL2_VOICES;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* kill voice */
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG " --> kill voice %i\n", voice);
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
opl3_reg = reg_side | (OPL3_REG_KEYON_BLOCK + voice_offset);
|
|
|
|
/* clear Key ON bit */
|
|
|
|
opl3->command(opl3, opl3_reg, vp->keyon_reg);
|
|
|
|
|
|
|
|
/* do the bookkeeping */
|
|
|
|
vp->time = opl3->use_time++;
|
|
|
|
|
|
|
|
if (vp->state == SNDRV_OPL3_ST_ON_4OP) {
|
|
|
|
vp2 = &opl3->voices[voice + 3];
|
|
|
|
|
|
|
|
vp2->time = opl3->use_time++;
|
|
|
|
vp2->state = SNDRV_OPL3_ST_OFF;
|
|
|
|
}
|
|
|
|
vp->state = SNDRV_OPL3_ST_OFF;
|
|
|
|
#ifdef DEBUG_ALLOC
|
|
|
|
debug_alloc(opl3, "note off", voice);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Release a note in response to a midi note off.
|
|
|
|
*/
|
2005-11-17 06:13:14 -07:00
|
|
|
void snd_opl3_note_off(void *p, int note, int vel, struct snd_midi_channel *chan)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-17 06:13:14 -07:00
|
|
|
struct snd_opl3 *opl3;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
int voice;
|
2005-11-17 06:13:14 -07:00
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struct snd_opl3_voice *vp;
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2005-04-16 16:20:36 -06:00
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unsigned long flags;
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opl3 = p;
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#ifdef DEBUG_MIDI
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2009-02-05 07:51:50 -07:00
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snd_printk(KERN_DEBUG "Note off, ch %i, inst %i, note %i\n",
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2005-04-16 16:20:36 -06:00
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chan->number, chan->midi_program, note);
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#endif
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spin_lock_irqsave(&opl3->voice_lock, flags);
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if (opl3->synth_mode == SNDRV_OPL3_MODE_SEQ) {
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if (chan->drum_channel && use_internal_drums) {
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snd_opl3_drum_switch(opl3, note, vel, 0, chan);
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spin_unlock_irqrestore(&opl3->voice_lock, flags);
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return;
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}
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/* this loop will hopefully kill all extra voices, because
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they are grouped by the same channel and note values */
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for (voice = 0; voice < opl3->max_voices; voice++) {
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vp = &opl3->voices[voice];
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if (vp->state > 0 && vp->chan == chan && vp->note == note) {
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snd_opl3_kill_voice(opl3, voice);
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}
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}
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} else {
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/* remap OSS voices */
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if (chan->number < MAX_OPL3_VOICES) {
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voice = snd_opl3_oss_map[chan->number];
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snd_opl3_kill_voice(opl3, voice);
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}
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}
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spin_unlock_irqrestore(&opl3->voice_lock, flags);
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}
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/*
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* key pressure change
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*/
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2005-11-17 06:13:14 -07:00
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void snd_opl3_key_press(void *p, int note, int vel, struct snd_midi_channel *chan)
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2005-04-16 16:20:36 -06:00
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{
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2005-11-17 06:13:14 -07:00
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struct snd_opl3 *opl3;
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2005-04-16 16:20:36 -06:00
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opl3 = p;
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#ifdef DEBUG_MIDI
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2009-02-05 07:51:50 -07:00
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snd_printk(KERN_DEBUG "Key pressure, ch#: %i, inst#: %i\n",
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2005-04-16 16:20:36 -06:00
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chan->number, chan->midi_program);
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#endif
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}
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/*
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* terminate note
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*/
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2005-11-17 06:13:14 -07:00
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void snd_opl3_terminate_note(void *p, int note, struct snd_midi_channel *chan)
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2005-04-16 16:20:36 -06:00
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{
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2005-11-17 06:13:14 -07:00
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struct snd_opl3 *opl3;
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2005-04-16 16:20:36 -06:00
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opl3 = p;
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#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
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snd_printk(KERN_DEBUG "Terminate note, ch#: %i, inst#: %i\n",
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2005-04-16 16:20:36 -06:00
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chan->number, chan->midi_program);
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#endif
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}
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|
2005-11-17 06:13:14 -07:00
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static void snd_opl3_update_pitch(struct snd_opl3 *opl3, int voice)
|
2005-04-16 16:20:36 -06:00
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{
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unsigned short reg_side;
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unsigned char voice_offset;
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unsigned short opl3_reg;
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unsigned char fnum, blocknum;
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|
2005-11-17 06:13:14 -07:00
|
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struct snd_opl3_voice *vp;
|
2005-04-16 16:20:36 -06:00
|
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|
2008-08-08 09:12:47 -06:00
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if (snd_BUG_ON(voice >= MAX_OPL3_VOICES))
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return;
|
2005-04-16 16:20:36 -06:00
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vp = &opl3->voices[voice];
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if (vp->chan == NULL)
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return; /* not allocated? */
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if (voice < MAX_OPL2_VOICES) {
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/* Left register block for voices 0 .. 8 */
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reg_side = OPL3_LEFT;
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voice_offset = voice;
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} else {
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/* Right register block for voices 9 .. 17 */
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reg_side = OPL3_RIGHT;
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voice_offset = voice - MAX_OPL2_VOICES;
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}
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snd_opl3_calc_pitch(&fnum, &blocknum, vp->note, vp->chan);
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/* Set OPL3 FNUM_LOW register of requested voice */
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opl3_reg = reg_side | (OPL3_REG_FNUM_LOW + voice_offset);
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opl3->command(opl3, opl3_reg, fnum);
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vp->keyon_reg = blocknum;
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/* Set output sound flag */
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blocknum |= OPL3_KEYON_BIT;
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/* Set OPL3 KEYON_BLOCK register of requested voice */
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|
opl3_reg = reg_side | (OPL3_REG_KEYON_BLOCK + voice_offset);
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opl3->command(opl3, opl3_reg, blocknum);
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|
|
vp->time = opl3->use_time++;
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|
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}
|
|
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|
|
/*
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|
|
|
* Update voice pitch controller
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*/
|
2005-11-17 06:13:14 -07:00
|
|
|
static void snd_opl3_pitch_ctrl(struct snd_opl3 *opl3, struct snd_midi_channel *chan)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
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|
|
int voice;
|
2005-11-17 06:13:14 -07:00
|
|
|
struct snd_opl3_voice *vp;
|
2005-04-16 16:20:36 -06:00
|
|
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|
|
unsigned long flags;
|
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|
spin_lock_irqsave(&opl3->voice_lock, flags);
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if (opl3->synth_mode == SNDRV_OPL3_MODE_SEQ) {
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for (voice = 0; voice < opl3->max_voices; voice++) {
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|
|
|
vp = &opl3->voices[voice];
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|
|
if (vp->state > 0 && vp->chan == chan) {
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|
|
snd_opl3_update_pitch(opl3, voice);
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|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* remap OSS voices */
|
|
|
|
if (chan->number < MAX_OPL3_VOICES) {
|
|
|
|
voice = snd_opl3_oss_map[chan->number];
|
|
|
|
snd_opl3_update_pitch(opl3, voice);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&opl3->voice_lock, flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2007-10-19 15:10:43 -06:00
|
|
|
* Deal with a controller type event. This includes all types of
|
2005-04-16 16:20:36 -06:00
|
|
|
* control events, not just the midi controllers
|
|
|
|
*/
|
2005-11-17 06:13:14 -07:00
|
|
|
void snd_opl3_control(void *p, int type, struct snd_midi_channel *chan)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-17 06:13:14 -07:00
|
|
|
struct snd_opl3 *opl3;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
opl3 = p;
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG "Controller, TYPE = %i, ch#: %i, inst#: %i\n",
|
2005-04-16 16:20:36 -06:00
|
|
|
type, chan->number, chan->midi_program);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
switch (type) {
|
|
|
|
case MIDI_CTL_MSB_MODWHEEL:
|
|
|
|
if (chan->control[MIDI_CTL_MSB_MODWHEEL] > 63)
|
|
|
|
opl3->drum_reg |= OPL3_VIBRATO_DEPTH;
|
|
|
|
else
|
|
|
|
opl3->drum_reg &= ~OPL3_VIBRATO_DEPTH;
|
|
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION,
|
|
|
|
opl3->drum_reg);
|
|
|
|
break;
|
|
|
|
case MIDI_CTL_E2_TREMOLO_DEPTH:
|
|
|
|
if (chan->control[MIDI_CTL_E2_TREMOLO_DEPTH] > 63)
|
|
|
|
opl3->drum_reg |= OPL3_TREMOLO_DEPTH;
|
|
|
|
else
|
|
|
|
opl3->drum_reg &= ~OPL3_TREMOLO_DEPTH;
|
|
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION,
|
|
|
|
opl3->drum_reg);
|
|
|
|
break;
|
|
|
|
case MIDI_CTL_PITCHBEND:
|
|
|
|
snd_opl3_pitch_ctrl(opl3, chan);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* NRPN events
|
|
|
|
*/
|
2005-11-17 06:13:14 -07:00
|
|
|
void snd_opl3_nrpn(void *p, struct snd_midi_channel *chan,
|
|
|
|
struct snd_midi_channel_set *chset)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-17 06:13:14 -07:00
|
|
|
struct snd_opl3 *opl3;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
opl3 = p;
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG "NRPN, ch#: %i, inst#: %i\n",
|
2005-04-16 16:20:36 -06:00
|
|
|
chan->number, chan->midi_program);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* receive sysex
|
|
|
|
*/
|
|
|
|
void snd_opl3_sysex(void *p, unsigned char *buf, int len,
|
2005-11-17 06:13:14 -07:00
|
|
|
int parsed, struct snd_midi_channel_set *chset)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-17 06:13:14 -07:00
|
|
|
struct snd_opl3 *opl3;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
opl3 = p;
|
|
|
|
#ifdef DEBUG_MIDI
|
2009-02-05 07:51:50 -07:00
|
|
|
snd_printk(KERN_DEBUG "SYSEX\n");
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
}
|