forked from Minki/linux
1a59d1b8e0
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
211 lines
6.3 KiB
C
211 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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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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* OPL2/OPL3/OPL4 FM routines for internal percussion channels
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*/
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#include "opl3_voice.h"
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static char snd_opl3_drum_table[47] =
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{
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OPL3_BASSDRUM_ON, OPL3_BASSDRUM_ON, OPL3_HIHAT_ON, /* 35 - 37 */
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OPL3_SNAREDRUM_ON, OPL3_HIHAT_ON, OPL3_SNAREDRUM_ON, /* 38 - 40 */
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OPL3_BASSDRUM_ON, OPL3_HIHAT_ON, OPL3_BASSDRUM_ON, /* 41 - 43 */
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OPL3_HIHAT_ON, OPL3_TOMTOM_ON, OPL3_HIHAT_ON, /* 44 - 46 */
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OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, OPL3_CYMBAL_ON, /* 47 - 49 */
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OPL3_TOMTOM_ON, OPL3_CYMBAL_ON, OPL3_CYMBAL_ON, /* 50 - 52 */
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OPL3_CYMBAL_ON, OPL3_CYMBAL_ON, OPL3_CYMBAL_ON, /* 53 - 55 */
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OPL3_HIHAT_ON, OPL3_CYMBAL_ON, OPL3_TOMTOM_ON, /* 56 - 58 */
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OPL3_CYMBAL_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 59 - 61 */
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OPL3_HIHAT_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 62 - 64 */
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OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 65 - 67 */
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OPL3_TOMTOM_ON, OPL3_HIHAT_ON, OPL3_HIHAT_ON, /* 68 - 70 */
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OPL3_HIHAT_ON, OPL3_HIHAT_ON, OPL3_TOMTOM_ON, /* 71 - 73 */
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OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 74 - 76 */
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OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 77 - 79 */
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OPL3_CYMBAL_ON, OPL3_CYMBAL_ON /* 80 - 81 */
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};
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struct snd_opl3_drum_voice {
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int voice;
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int op;
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unsigned char am_vib;
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unsigned char ksl_level;
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unsigned char attack_decay;
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unsigned char sustain_release;
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unsigned char feedback_connection;
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unsigned char wave_select;
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};
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struct snd_opl3_drum_note {
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int voice;
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unsigned char fnum;
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unsigned char octave_f;
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unsigned char feedback_connection;
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};
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static struct snd_opl3_drum_voice bass_op0 = {6, 0, 0x00, 0x32, 0xf8, 0x66, 0x30, 0x00};
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static struct snd_opl3_drum_voice bass_op1 = {6, 1, 0x00, 0x03, 0xf6, 0x57, 0x30, 0x00};
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static struct snd_opl3_drum_note bass_note = {6, 0x90, 0x09};
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static struct snd_opl3_drum_voice hihat = {7, 0, 0x00, 0x03, 0xf0, 0x06, 0x20, 0x00};
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static struct snd_opl3_drum_voice snare = {7, 1, 0x00, 0x03, 0xf0, 0x07, 0x20, 0x02};
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static struct snd_opl3_drum_note snare_note = {7, 0xf4, 0x0d};
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static struct snd_opl3_drum_voice tomtom = {8, 0, 0x02, 0x03, 0xf0, 0x06, 0x10, 0x00};
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static struct snd_opl3_drum_note tomtom_note = {8, 0xf4, 0x09};
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static struct snd_opl3_drum_voice cymbal = {8, 1, 0x04, 0x03, 0xf0, 0x06, 0x10, 0x00};
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/*
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* set drum voice characteristics
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*/
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static void snd_opl3_drum_voice_set(struct snd_opl3 *opl3,
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struct snd_opl3_drum_voice *data)
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{
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unsigned char op_offset = snd_opl3_regmap[data->voice][data->op];
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unsigned char voice_offset = data->voice;
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unsigned short opl3_reg;
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/* Set OPL3 AM_VIB register */
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opl3_reg = OPL3_LEFT | (OPL3_REG_AM_VIB + op_offset);
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opl3->command(opl3, opl3_reg, data->am_vib);
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/* Set OPL3 KSL_LEVEL register */
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opl3_reg = OPL3_LEFT | (OPL3_REG_KSL_LEVEL + op_offset);
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opl3->command(opl3, opl3_reg, data->ksl_level);
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/* Set OPL3 ATTACK_DECAY register */
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opl3_reg = OPL3_LEFT | (OPL3_REG_ATTACK_DECAY + op_offset);
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opl3->command(opl3, opl3_reg, data->attack_decay);
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/* Set OPL3 SUSTAIN_RELEASE register */
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opl3_reg = OPL3_LEFT | (OPL3_REG_SUSTAIN_RELEASE + op_offset);
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opl3->command(opl3, opl3_reg, data->sustain_release);
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/* Set OPL3 FEEDBACK_CONNECTION register */
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opl3_reg = OPL3_LEFT | (OPL3_REG_FEEDBACK_CONNECTION + voice_offset);
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opl3->command(opl3, opl3_reg, data->feedback_connection);
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/* Select waveform */
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opl3_reg = OPL3_LEFT | (OPL3_REG_WAVE_SELECT + op_offset);
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opl3->command(opl3, opl3_reg, data->wave_select);
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}
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/*
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* Set drum voice pitch
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*/
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static void snd_opl3_drum_note_set(struct snd_opl3 *opl3,
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struct snd_opl3_drum_note *data)
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{
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unsigned char voice_offset = data->voice;
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unsigned short opl3_reg;
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/* Set OPL3 FNUM_LOW register */
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opl3_reg = OPL3_LEFT | (OPL3_REG_FNUM_LOW + voice_offset);
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opl3->command(opl3, opl3_reg, data->fnum);
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/* Set OPL3 KEYON_BLOCK register */
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opl3_reg = OPL3_LEFT | (OPL3_REG_KEYON_BLOCK + voice_offset);
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opl3->command(opl3, opl3_reg, data->octave_f);
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}
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/*
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* Set drum voice volume and position
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*/
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static void snd_opl3_drum_vol_set(struct snd_opl3 *opl3,
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struct snd_opl3_drum_voice *data,
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int vel, struct snd_midi_channel *chan)
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{
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unsigned char op_offset = snd_opl3_regmap[data->voice][data->op];
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unsigned char voice_offset = data->voice;
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unsigned char reg_val;
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unsigned short opl3_reg;
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/* Set OPL3 KSL_LEVEL register */
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reg_val = data->ksl_level;
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snd_opl3_calc_volume(®_val, vel, chan);
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opl3_reg = OPL3_LEFT | (OPL3_REG_KSL_LEVEL + op_offset);
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opl3->command(opl3, opl3_reg, reg_val);
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/* Set OPL3 FEEDBACK_CONNECTION register */
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/* Set output voice connection */
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reg_val = data->feedback_connection | OPL3_STEREO_BITS;
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if (chan->gm_pan < 43)
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reg_val &= ~OPL3_VOICE_TO_RIGHT;
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if (chan->gm_pan > 85)
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reg_val &= ~OPL3_VOICE_TO_LEFT;
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opl3_reg = OPL3_LEFT | (OPL3_REG_FEEDBACK_CONNECTION + voice_offset);
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opl3->command(opl3, opl3_reg, reg_val);
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}
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/*
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* Loads drum voices at init time
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*/
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void snd_opl3_load_drums(struct snd_opl3 *opl3)
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{
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snd_opl3_drum_voice_set(opl3, &bass_op0);
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snd_opl3_drum_voice_set(opl3, &bass_op1);
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snd_opl3_drum_note_set(opl3, &bass_note);
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snd_opl3_drum_voice_set(opl3, &hihat);
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snd_opl3_drum_voice_set(opl3, &snare);
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snd_opl3_drum_note_set(opl3, &snare_note);
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snd_opl3_drum_voice_set(opl3, &tomtom);
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snd_opl3_drum_note_set(opl3, &tomtom_note);
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snd_opl3_drum_voice_set(opl3, &cymbal);
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}
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/*
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* Switch drum voice on or off
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*/
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void snd_opl3_drum_switch(struct snd_opl3 *opl3, int note, int vel, int on_off,
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struct snd_midi_channel *chan)
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{
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unsigned char drum_mask;
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struct snd_opl3_drum_voice *drum_voice;
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if (!(opl3->drum_reg & OPL3_PERCUSSION_ENABLE))
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return;
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if ((note < 35) || (note > 81))
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return;
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drum_mask = snd_opl3_drum_table[note - 35];
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if (on_off) {
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switch (drum_mask) {
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case OPL3_BASSDRUM_ON:
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drum_voice = &bass_op1;
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break;
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case OPL3_HIHAT_ON:
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drum_voice = &hihat;
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break;
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case OPL3_SNAREDRUM_ON:
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drum_voice = &snare;
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break;
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case OPL3_TOMTOM_ON:
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drum_voice = &tomtom;
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break;
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case OPL3_CYMBAL_ON:
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drum_voice = &cymbal;
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break;
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default:
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drum_voice = &tomtom;
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}
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snd_opl3_drum_vol_set(opl3, drum_voice, vel, chan);
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opl3->drum_reg |= drum_mask;
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} else {
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opl3->drum_reg &= ~drum_mask;
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}
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opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION,
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opl3->drum_reg);
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}
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