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https://github.com/ZDoom/qzdoom.git
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Update gus_pat.cpp's envelope fudging to current git version
This commit is contained in:
Randy Heit
parent
0c3b468e42
commit
a74d352490
2 changed files with 138 additions and 50 deletions
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@ -45,21 +45,23 @@
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extern unsigned short int _WM_SampleRate;
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struct _sample {
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unsigned long int data_length;
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unsigned long int loop_start;
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unsigned long int loop_end;
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unsigned long int loop_size;
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unsigned int data_length;
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unsigned int loop_start;
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unsigned int loop_end;
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unsigned int loop_size;
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unsigned char loop_fraction;
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unsigned short int rate;
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unsigned long int freq_low;
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unsigned long int freq_high;
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unsigned long int freq_root;
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unsigned short rate;
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unsigned int freq_low;
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unsigned int freq_high;
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unsigned int freq_root;
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unsigned char modes;
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signed long int env_rate[7];
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signed long int env_target[7];
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unsigned long int inc_div;
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signed int env_rate[7];
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signed int env_target[7];
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unsigned int inc_div;
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signed short *data;
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struct _sample *next;
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unsigned int note_off_decay;
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};
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struct _env {
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@ -1,31 +1,26 @@
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/*
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gus_pat.c
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Midi Wavetable Processing library
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Copyright (C) Chris Ison 2001-2011
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Copyright (C) Bret Curtis 2013-2014
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This file is part of WildMIDI.
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WildMIDI is free software: you can redistribute and/or modify the player
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under the terms of the GNU General Public License and you can redistribute
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and/or modify the library under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation, either version 3 of
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the licenses, or(at your option) any later version.
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WildMIDI is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License and
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the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU General Public License and the
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GNU Lesser General Public License along with WildMIDI. If not, see
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<http://www.gnu.org/licenses/>.
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* gus_pat.c -- Midi Wavetable Processing library
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*
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* Copyright (C) WildMIDI Developers 2001-2015
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*
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* This file is part of WildMIDI.
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*
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* WildMIDI is free software: you can redistribute and/or modify the player
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* under the terms of the GNU General Public License and you can redistribute
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* and/or modify the library under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, either version 3 of
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* the licenses, or(at your option) any later version.
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*
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* WildMIDI is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License and
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* the GNU Lesser 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 and the
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* GNU Lesser General Public License along with WildMIDI. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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//#include "config.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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@ -737,6 +732,8 @@ struct _sample * _WM_load_gus_pat(const char *filename, int fix_release) {
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};
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unsigned long int tmp_loop;
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/*unused*/fix_release;
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SAMPLE_CONVERT_DEBUG(__FUNCTION__); SAMPLE_CONVERT_DEBUG(filename);
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if ((gus_patch = _WM_BufferFile(filename, &gus_size)) == NULL) {
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@ -839,17 +836,80 @@ struct _sample * _WM_load_gus_pat(const char *filename, int fix_release) {
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/*
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FIXME: Experimental Hacky Fix
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This looks for "dodgy" release envelope settings that faulty editors
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may have set and attempts to corrects it.
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if (fix_release)
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Lets make this automatic ...
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*/
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if (fix_release) {
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if (env_time_table[gus_patch[gus_ptr + 40]]
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< env_time_table[gus_patch[gus_ptr + 41]]) {
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unsigned char tmp_hack_rate = gus_patch[gus_ptr + 41];
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gus_patch[gus_ptr + 41] = gus_patch[gus_ptr + 40];
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gus_patch[gus_ptr + 40] = tmp_hack_rate;
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{
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/*
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After studying faulty gus_pats this way may work better
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Testing to determine if any further adjustments are required
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*/
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if (env_time_table[gus_patch[gus_ptr + 40]] < env_time_table[gus_patch[gus_ptr + 41]]) {
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unsigned char tmp_hack_rate = 0;
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if (env_time_table[gus_patch[gus_ptr + 41]] < env_time_table[gus_patch[gus_ptr + 42]]) {
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// 1 2 3
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tmp_hack_rate = gus_patch[gus_ptr + 40];
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gus_patch[gus_ptr + 40] = gus_patch[gus_ptr + 42];
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gus_patch[gus_ptr + 42] = tmp_hack_rate;
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} else if (env_time_table[gus_patch[gus_ptr + 41]] == env_time_table[gus_patch[gus_ptr + 42]]) {
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// 1 2 2
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tmp_hack_rate = gus_patch[gus_ptr + 40];
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gus_patch[gus_ptr + 40] = gus_patch[gus_ptr + 42];
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gus_patch[gus_ptr + 41] = gus_patch[gus_ptr + 42];
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gus_patch[gus_ptr + 42] = tmp_hack_rate;
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} else {
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if (env_time_table[gus_patch[gus_ptr + 40]] < env_time_table[gus_patch[gus_ptr + 42]]) {
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// 1 3 2
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tmp_hack_rate = gus_patch[gus_ptr + 40];
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gus_patch[gus_ptr + 40] = gus_patch[gus_ptr + 41];
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gus_patch[gus_ptr + 41] = gus_patch[gus_ptr + 42];
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gus_patch[gus_ptr + 42] = tmp_hack_rate;
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} else {
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// 2 3 1 or 1 2 1
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tmp_hack_rate = gus_patch[gus_ptr + 40];
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gus_patch[gus_ptr + 40] = gus_patch[gus_ptr + 41];
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gus_patch[gus_ptr + 41] = tmp_hack_rate;
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}
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}
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} else if (env_time_table[gus_patch[gus_ptr + 41]] < env_time_table[gus_patch[gus_ptr + 42]]) {
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unsigned char tmp_hack_rate = 0;
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if (env_time_table[gus_patch[gus_ptr + 40]] < env_time_table[gus_patch[gus_ptr + 42]]) {
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// 2 1 3
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tmp_hack_rate = gus_patch[gus_ptr + 40];
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gus_patch[gus_ptr + 40] = gus_patch[gus_ptr + 42];
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gus_patch[gus_ptr + 42] = gus_patch[gus_ptr + 41];
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gus_patch[gus_ptr + 41] = tmp_hack_rate;
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} else {
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// 3 1 2
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tmp_hack_rate = gus_patch[gus_ptr + 41];
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gus_patch[gus_ptr + 41] = gus_patch[gus_ptr + 42];
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gus_patch[gus_ptr + 42] = tmp_hack_rate;
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}
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}
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#if 0
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if ((env_time_table[gus_patch[gus_ptr + 40]] < env_time_table[gus_patch[gus_ptr + 41]]) && (env_time_table[gus_patch[gus_ptr + 41]] == env_time_table[gus_patch[gus_ptr + 42]])) {
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uint8_t tmp_hack_rate = 0;
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tmp_hack_rate = gus_patch[gus_ptr + 41];
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gus_patch[gus_ptr + 41] = gus_patch[gus_ptr + 40];
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gus_patch[gus_ptr + 42] = gus_patch[gus_ptr + 40];
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gus_patch[gus_ptr + 40] = tmp_hack_rate;
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tmp_hack_rate = gus_patch[gus_ptr + 47];
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gus_patch[gus_ptr + 47] = gus_patch[gus_ptr + 46];
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gus_patch[gus_ptr + 48] = gus_patch[gus_ptr + 46];
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gus_patch[gus_ptr + 46] = tmp_hack_rate;
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}
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#endif
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}
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for (i = 0; i < 6; i++) {
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GUSPAT_INT_DEBUG("Envelope #",i);
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if (gus_sample->modes & SAMPLE_ENVELOPE) {
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unsigned char env_rate = gus_patch[gus_ptr + 37 + i];
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gus_sample->env_target[i] = 16448 * gus_patch[gus_ptr + 43 + i];
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@ -886,6 +946,32 @@ struct _sample * _WM_load_gus_pat(const char *filename, int fix_release) {
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return NULL;
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}
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/*
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Test and set decay expected decay time after a note off
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NOTE: This sets samples for full range decay
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*/
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if (gus_sample->modes & SAMPLE_ENVELOPE) {
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double samples_f = 0.0;
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if (gus_sample->modes & SAMPLE_CLAMPED) {
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samples_f = (4194301.0 - (float)gus_sample->env_target[5]) / gus_sample->env_rate[5];
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} else {
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if (gus_sample->modes & SAMPLE_SUSTAIN) {
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samples_f = (4194301.0 - (float)gus_sample->env_target[3]) / gus_sample->env_rate[3];
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samples_f += (float)(gus_sample->env_target[3] - gus_sample->env_target[4]) / gus_sample->env_rate[4];
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} else {
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samples_f = (4194301.0 - (float)gus_sample->env_target[4]) / gus_sample->env_rate[4];
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}
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samples_f += (float)(gus_sample->env_target[4] - gus_sample->env_target[5]) / gus_sample->env_rate[5];
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}
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samples_f += (float)gus_sample->env_target[5] / gus_sample->env_rate[6];
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gus_sample->note_off_decay = (unsigned)samples_f;
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} else {
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gus_sample->note_off_decay = gus_sample->data_length * _WM_SampleRate / gus_sample->rate;
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}
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gus_ptr += tmp_cnt;
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gus_sample->loop_start = (gus_sample->loop_start << 10)
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| (((gus_sample->loop_fraction & 0x0f) << 10) / 16);
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