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gzdoom/libraries/wildmidi/wildmidi_lib.cpp

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/*
wildmidi_lib.c
Midi Wavetable Processing library
Copyright (C) Chris Ison 2001-2014
Copyright (C) Bret Curtis 2013-2014
This file is part of WildMIDI.
WildMIDI is free software: you can redistribute and/or modify the player
under the terms of the GNU General Public License and you can redistribute
and/or modify the library under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation, either version 3 of
the licenses, or(at your option) any later version.
WildMIDI 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 and
the GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License and the
GNU Lesser General Public License along with WildMIDI. If not, see
<http://www.gnu.org/licenses/>.
*/
//#include "config.h"
#define UNUSED(x) (void)(x)
#include <errno.h>
#include <fcntl.h>
#include <math.h>
#include <string.h>
#ifndef _WIN32
#include <strings.h>
#endif
#include <stdlib.h>
#include <memory>
#include <algorithm>
#include "common.h"
#include "wm_error.h"
#include "file_io.h"
#include "reverb.h"
#include "gus_pat.h"
#include "wildmidi_lib.h"
namespace WildMidi
{
#define IS_DIR_SEPARATOR(c) ((c) == '/' || (c) == '\\')
#ifdef _WIN32
#define HAS_DRIVE_SPEC(f) ((f)[0] && ((f)[1] == ':'))
#else
#define HAS_DRIVE_SPEC(f) (0)
#endif
#define IS_ABSOLUTE_PATH(f) (IS_DIR_SEPARATOR((f)[0]) || HAS_DRIVE_SPEC((f)))
/*
* =========================
* Global Data and Data Structs
* =========================
*/
#define MEM_CHUNK 8192
static const char WM_Version[] = "WildMidi Processing Library";
struct _channel {
unsigned char bank;
struct _patch *patch;
unsigned char hold;
unsigned char volume;
unsigned char pressure;
unsigned char expression;
signed char balance;
signed char pan;
signed short int left_adjust;
signed short int right_adjust;
signed short int pitch;
signed short int pitch_range;
signed long int pitch_adjust;
unsigned short reg_data;
unsigned char reg_non;
unsigned char isdrum;
};
#define HOLD_OFF 0x02
struct _note {
unsigned short noteid;
unsigned char velocity;
struct _patch *patch;
struct _sample *sample;
unsigned int sample_pos;
unsigned int sample_inc;
signed int env_inc;
unsigned char env;
signed int env_level;
unsigned char modes;
unsigned char hold;
unsigned char active;
struct _note *replay;
struct _note *next;
unsigned int left_mix_volume;
unsigned int right_mix_volume;
unsigned char is_off;
};
struct _event_data {
unsigned char channel;
unsigned int data;
};
struct _mdi {
_mdi()
{
samples_to_mix = 0;
midi_master_vol = 0;
memset(&info, 0, sizeof(info));
tmp_info = NULL;
memset(&channel, 0, sizeof(channel));
note = NULL;
memset(note_table, 0, sizeof(note_table));
patches = NULL;
patch_count = 0;
amp = 0;
mix_buffer = NULL;
mix_buffer_size = 0;
reverb = NULL;
}
unsigned long int samples_to_mix;
unsigned short midi_master_vol;
struct _WM_Info info;
struct _WM_Info *tmp_info;
struct _channel channel[16];
struct _note *note;
struct _note note_table[2][16][128];
struct _patch **patches;
unsigned long int patch_count;
signed short int amp;
signed int *mix_buffer;
unsigned long int mix_buffer_size;
struct _rvb *reverb;
};
#define FPBITS 10
#define FPMASK ((1L<<FPBITS)-1L)
/* Gauss Interpolation code adapted from code supplied by Eric. A. Welsh */
static double newt_coeffs[58][58]; /* for start/end of samples */
static std::vector<double> gauss_table; /* *gauss_table[1<<FPBITS] */
static const int gauss_n = 34; /* 34 is as high as we can go before errors crop up */
static void init_gauss(void) {
/* init gauss table */
int n = gauss_n;
int m, i, k, n_half = (n >> 1);
int j;
int sign;
double ck;
double x, x_inc, xz;
double z[35];
double *gptr, *t;
if (gauss_table.size()) {
return;
}
newt_coeffs[0][0] = 1;
for (i = 0; i <= n; i++) {
newt_coeffs[i][0] = 1;
newt_coeffs[i][i] = 1;
if (i > 1) {
newt_coeffs[i][0] = newt_coeffs[i - 1][0] / i;
newt_coeffs[i][i] = newt_coeffs[i - 1][0] / i;
}
for (j = 1; j < i; j++) {
newt_coeffs[i][j] = newt_coeffs[i - 1][j - 1]
+ newt_coeffs[i - 1][j];
if (i > 1)
newt_coeffs[i][j] /= i;
}
z[i] = i / (4 * M_PI);
}
for (i = 0; i <= n; i++)
for (j = 0, sign = (int)pow(-1., i); j <= i; j++, sign *= -1)
newt_coeffs[i][j] *= sign;
gauss_table.resize((1<<FPBITS) * (n + 1));
t = gauss_table.data();
x_inc = 1.0 / (1<<FPBITS);
for (m = 0, x = 0.0; m < (1<<FPBITS); m++, x += x_inc) {
xz = (x + n_half) / (4 * M_PI);
gptr = &t[m * (n + 1)];
for (k = 0; k <= n; k++) {
ck = 1.0;
for (i = 0; i <= n; i++) {
if (i == k)
continue;
ck *= (sin(xz - z[i])) / (sin(z[k] - z[i]));
}
*gptr++ = ck;
}
}
}
/* f: ( VOLUME / 127.0 ) * 1024.0 */
static const signed short int lin_volume[] = { 0, 8, 16, 24, 32, 40, 48, 56, 64, 72,
80, 88, 96, 104, 112, 120, 129, 137, 145, 153, 161, 169, 177, 185, 193,
201, 209, 217, 225, 233, 241, 249, 258, 266, 274, 282, 290, 298, 306,
314, 322, 330, 338, 346, 354, 362, 370, 378, 387, 395, 403, 411, 419,
427, 435, 443, 451, 459, 467, 475, 483, 491, 499, 507, 516, 524, 532,
540, 548, 556, 564, 572, 580, 588, 596, 604, 612, 620, 628, 636, 645,
653, 661, 669, 677, 685, 693, 701, 709, 717, 725, 733, 741, 749, 757,
765, 774, 782, 790, 798, 806, 814, 822, 830, 838, 846, 854, 862, 870,
878, 886, 894, 903, 911, 919, 927, 935, 943, 951, 959, 967, 975, 983,
991, 999, 1007, 1015, 1024 };
/* f: As per midi 2 standard */
static const float dBm_volume[] = { -999999.999999f, -84.15214884f, -72.11094901f,
-65.06729865f, -60.06974919f, -56.19334866f, -53.02609882f, -50.34822724f,
-48.02854936f, -45.98244846f, -44.15214884f, -42.49644143f, -40.984899f,
-39.59441475f, -38.30702741f, -37.10849848f, -35.98734953f, -34.93419198f,
-33.94124863f, -33.0020048f, -32.11094901f, -31.26337705f, -30.45524161f,
-29.6830354f, -28.94369917f, -28.23454849f, -27.55321492f, -26.89759827f,
-26.26582758f, -25.65622892f, -25.06729865f, -24.49768108f, -23.94614971f,
-23.41159124f, -22.89299216f, -22.38942706f, -21.90004881f, -21.42407988f,
-20.96080497f, -20.50956456f, -20.06974919f, -19.64079457f, -19.22217722f,
-18.81341062f, -18.41404178f, -18.02364829f, -17.64183557f, -17.26823452f,
-16.90249934f, -16.54430564f, -16.19334866f, -15.84934179f, -15.51201509f,
-15.18111405f, -14.85639845f, -14.53764126f, -14.22462776f, -13.91715461f,
-13.6150291f, -13.31806837f, -13.02609882f, -12.73895544f, -12.45648126f,
-12.17852686f, -11.90494988f, -11.63561457f, -11.37039142f, -11.10915673f,
-10.85179233f, -10.59818521f, -10.34822724f, -10.10181489f, -9.858848981f,
-9.619234433f, -9.382880049f, -9.149698303f, -8.919605147f, -8.692519831f,
-8.468364731f, -8.247065187f, -8.028549359f, -7.812748083f, -7.599594743f,
-7.389025143f, -7.180977396f, -6.97539181f, -6.772210788f, -6.571378733f,
-6.372841952f, -6.176548572f, -5.982448461f, -5.790493145f, -5.600635744f,
-5.412830896f, -5.227034694f, -5.043204627f, -4.861299517f, -4.681279468f,
-4.503105811f, -4.326741054f, -4.152148838f, -3.979293887f, -3.808141968f,
-3.63865985f, -3.470815266f, -3.304576875f, -3.139914228f, -2.976797731f,
-2.815198619f, -2.655088921f, -2.496441432f, -2.339229687f, -2.183427931f,
-2.029011099f, -1.875954785f, -1.724235224f, -1.573829269f, -1.424714368f,
-1.276868546f, -1.130270383f, -0.9848989963f, -0.8407340256f, -0.6977556112f,
-0.5559443807f, -0.4152814317f, -0.2757483179f, -0.1373270335f, 0 };
/* f: As per midi 2 standard */
static const float dBm_pan_volume[127] = {
-999999.999999f, -87.6945020928f, -73.8331126923f, -65.7264009888f,
-59.9763864074f, -55.5181788833f, -51.8774481743f, -48.8011722841f,
-46.1383198371f, -43.7914727130f, -41.6941147218f, -39.7988027954f,
-38.0705069530f, -36.4826252703f, -35.0144798827f, -33.6496789707f,
-32.3750084716f, -31.1796603753f, -30.0546819321f, -28.9925739783f,
-27.9869924122f, -27.0325225804f, -26.1245061976f, -25.2589067713f,
-24.4322036893f, -23.6413079424f, -22.8834943857f, -22.1563467917f,
-21.4577129008f, -20.7856673630f, -20.1384809653f, -19.5145949062f,
-18.9125991563f, -18.3312141503f, -17.7692752119f, -17.2257192381f,
-16.6995732597f, -16.1899445690f, -15.6960121652f, -15.2170193110f,
-14.7522670314f, -14.3011084168f, -13.8629436112f, -13.4372153915f,
-13.0234052546f, -12.6210299451f, -12.2296383638f, -11.8488088095f,
-11.4781465116f, -11.1172814164f, -10.7658661983f, -10.4235744668f,
-10.0900991491f, -9.7651510261f, -9.4484574055f, -9.1397609172f,
-8.8388184168f, -8.5453999868f, -8.2592880250f, -7.9802764101f,
-7.7081697387f, -7.4427826248f, -7.1839390567f, -6.9314718056f,
-6.6852218807f, -6.4450380272f, -6.2107762624f, -5.9822994468f,
-5.7594768878f, -5.5421839719f, -5.3303018237f, -5.1237169899f,
-4.9223211445f, -4.7260108155f, -4.5346871303f, -4.3482555779f,
-4.1666257875f, -3.9897113219f, -3.8174294843f, -3.6497011373f,
-3.4864505345f, -3.3276051620f, -3.1730955900f, -3.0228553340f,
-2.8768207245f, -2.7349307844f, -2.5971271143f, -2.4633537845f,
-2.3335572335f, -2.2076861725f, -2.0856914960f, -1.9675261968f,
-1.8531452871f, -1.7425057233f, -1.6355663356f, -1.5322877618f,
-1.4326323846f, -1.3365642732f, -1.2440491272f, -1.1550542250f,
-1.0695483746f, -0.9875018671f, -0.9088864335f, -0.8336752037f,
-0.7618426682f, -0.6933646420f, -0.6282182304f, -0.5663817981f,
-0.5078349388f, -0.4525584478f, -0.4005342959f, -0.3517456058f,
-0.3061766293f, -0.2638127266f, -0.2246403475f, -0.1886470134f,
-0.1558213016f, -0.1261528303f, -0.0996322457f, -0.0762512098f,
-0.0560023899f, -0.0388794497f, -0.0248770409f, -0.0139907967f,
-0.0062173263f, -0.0015542108f, 0.0000000000f };
static const unsigned int freq_table[] = { 837201792, 837685632, 838169728,
838653568, 839138240, 839623232, 840108480, 840593984, 841079680,
841565184, 842051648, 842538240, 843025152, 843512320, 843999232,
844486976, 844975040, 845463360, 845951936, 846440320, 846929536,
847418944, 847908608, 848398656, 848888960, 849378944, 849869824,
850361024, 850852416, 851344192, 851835584, 852327872, 852820480,
853313280, 853806464, 854299328, 854793024, 855287040, 855781312,
856275904, 856770752, 857265344, 857760704, 858256448, 858752448,
859248704, 859744768, 860241600, 860738752, 861236160, 861733888,
862231360, 862729600, 863228160, 863727104, 864226176, 864725696,
865224896, 865724864, 866225152, 866725760, 867226688, 867727296,
868228736, 868730496, 869232576, 869734912, 870236928, 870739904,
871243072, 871746560, 872250368, 872754496, 873258240, 873762880,
874267840, 874773184, 875278720, 875783936, 876290112, 876796480,
877303232, 877810176, 878317504, 878824512, 879332416, 879840576,
880349056, 880857792, 881366272, 881875712, 882385280, 882895296,
883405440, 883915456, 884426304, 884937408, 885448832, 885960512,
886472512, 886984192, 887496768, 888009728, 888522944, 889036352,
889549632, 890063680, 890578048, 891092736, 891607680, 892122368,
892637952, 893153792, 893670016, 894186496, 894703232, 895219648,
895737024, 896254720, 896772672, 897290880, 897808896, 898327744,
898846912, 899366336, 899886144, 900405568, 900925952, 901446592,
901967552, 902488768, 903010368, 903531584, 904053760, 904576256,
905099008, 905622016, 906144896, 906668480, 907192512, 907716800,
908241408, 908765632, 909290816, 909816256, 910342144, 910868160,
911394624, 911920768, 912447680, 912975104, 913502720, 914030592,
914558208, 915086784, 915615552, 916144768, 916674176, 917203968,
917733440, 918263744, 918794496, 919325440, 919856704, 920387712,
920919616, 921451840, 921984320, 922517184, 923049728, 923583168,
924116928, 924651008, 925185344, 925720000, 926254336, 926789696,
927325312, 927861120, 928397440, 928933376, 929470208, 930007296,
930544768, 931082560, 931619968, 932158464, 932697152, 933236160,
933775488, 934315072, 934854464, 935394688, 935935296, 936476224,
937017344, 937558208, 938100160, 938642304, 939184640, 939727488,
940269888, 940813312, 941357056, 941900992, 942445440, 942990016,
943534400, 944079680, 944625280, 945171200, 945717440, 946263360,
946810176, 947357376, 947904832, 948452672, 949000192, 949548608,
950097280, 950646400, 951195776, 951745472, 952294912, 952845184,
953395904, 953946880, 954498176, 955049216, 955601088, 956153408,
956705920, 957258816, 957812032, 958364928, 958918848, 959472960,
960027456, 960582272, 961136768, 961692224, 962248000, 962804032,
963360448, 963916608, 964473600, 965031040, 965588736, 966146816,
966705152, 967263168, 967822144, 968381440, 968941120, 969501056,
970060736, 970621376, 971182272, 971743488, 972305088, 972866368,
973428608, 973991104, 974554048, 975117312, 975680768, 976243968,
976808192, 977372736, 977937536, 978502656, 979067584, 979633344,
980199488, 980765888, 981332736, 981899200, 982466688, 983034432,
983602624, 984171008, 984739776, 985308160, 985877632, 986447360,
987017472, 987587904, 988157952, 988729088, 989300416, 989872192,
990444224, 991016000, 991588672, 992161728, 992735168, 993308864,
993882880, 994456576, 995031296, 995606336, 996181696, 996757440,
997332800, 997909184, 998485888, 999062912, 999640256, 1000217984,
1000795392, 1001373696, 1001952448, 1002531520, 1003110848, 1003689920,
1004270016, 1004850304, 1005431040, 1006012160, 1006592832, 1007174592,
1007756608, 1008339008, 1008921792, 1009504768, 1010087552, 1010671296,
1011255360, 1011839808, 1012424576, 1013009024, 1013594368, 1014180160,
1014766272, 1015352768, 1015938880, 1016526016, 1017113472, 1017701248,
1018289408, 1018877824, 1019465984, 1020055104, 1020644672, 1021234496,
1021824768, 1022414528, 1023005440, 1023596608, 1024188160, 1024780096,
1025371584, 1025964160, 1026557120, 1027150336, 1027744000, 1028337920,
1028931520, 1029526144, 1030121152, 1030716480, 1031312128, 1031907456,
1032503808, 1033100480, 1033697536, 1034294912, 1034892032, 1035490048,
1036088512, 1036687232, 1037286336, 1037885824, 1038484928, 1039085056,
1039685632, 1040286464, 1040887680, 1041488448, 1042090368, 1042692608,
1043295168, 1043898176, 1044501440, 1045104384, 1045708288, 1046312640,
1046917376, 1047522368, 1048127040, 1048732800, 1049338816, 1049945280,
1050552128, 1051158528, 1051765952, 1052373824, 1052982016, 1053590592,
1054199424, 1054807936, 1055417600, 1056027456, 1056637760, 1057248448,
1057858752, 1058470016, 1059081728, 1059693824, 1060306304, 1060918336,
1061531392, 1062144896, 1062758656, 1063372928, 1063987392, 1064601664,
1065216896, 1065832448, 1066448448, 1067064704, 1067680704, 1068297728,
1068915136, 1069532864, 1070150976, 1070768640, 1071387520, 1072006720,
1072626240, 1073246080, 1073866368, 1074486272, 1075107200, 1075728512,
1076350208, 1076972160, 1077593856, 1078216704, 1078839680, 1079463296,
1080087040, 1080710528, 1081335168, 1081960064, 1082585344, 1083211008,
1083836928, 1084462592, 1085089280, 1085716352, 1086343936, 1086971648,
1087599104, 1088227712, 1088856576, 1089485824, 1090115456, 1090745472,
1091375104, 1092005760, 1092636928, 1093268352, 1093900160, 1094531584,
1095164160, 1095796992, 1096430336, 1097064064, 1097697280, 1098331648,
1098966400, 1099601536, 1100237056, 1100872832, 1101508224, 1102144768,
1102781824, 1103419136, 1104056832, 1104694144, 1105332608, 1105971328,
1106610432, 1107249920, 1107889152, 1108529408, 1109170048, 1109811072,
1110452352, 1111094144, 1111735552, 1112377984, 1113020928, 1113664128,
1114307712, 1114950912, 1115595264, 1116240000, 1116885120, 1117530624,
1118175744, 1118821888, 1119468416, 1120115456, 1120762752, 1121410432,
1122057856, 1122706176, 1123355136, 1124004224, 1124653824, 1125303040,
1125953408, 1126604160, 1127255168, 1127906560, 1128557696, 1129209984,
1129862528, 1130515456, 1131168768, 1131822592, 1132475904, 1133130368,
1133785216, 1134440448, 1135096064, 1135751296, 1136407680, 1137064448,
1137721472, 1138379008, 1139036800, 1139694336, 1140353024, 1141012096,
1141671424, 1142331264, 1142990592, 1143651200, 1144312192, 1144973440,
1145635200, 1146296448, 1146958976, 1147621760, 1148285056, 1148948608,
1149612672, 1150276224, 1150940928, 1151606144, 1152271616, 1152937600,
1153603072, 1154269824, 1154936832, 1155604352, 1156272128, 1156939648,
1157608192, 1158277248, 1158946560, 1159616384, 1160286464, 1160956288,
1161627264, 1162298624, 1162970240, 1163642368, 1164314112, 1164987008,
1165660160, 1166333824, 1167007872, 1167681536, 1168356352, 1169031552,
1169707136, 1170383104, 1171059584, 1171735552, 1172412672, 1173090304,
1173768192, 1174446592, 1175124480, 1175803648, 1176483072, 1177163008,
1177843328, 1178523264, 1179204352, 1179885824, 1180567680, 1181249920,
1181932544, 1182614912, 1183298304, 1183982208, 1184666368, 1185351040,
1186035328, 1186720640, 1187406464, 1188092672, 1188779264, 1189466368,
1190152960, 1190840832, 1191528960, 1192217600, 1192906624, 1193595136,
1194285056, 1194975232, 1195665792, 1196356736, 1197047296, 1197739136,
1198431360, 1199123968, 1199816960, 1200510336, 1201203328, 1201897600,
1202592128, 1203287040, 1203982464, 1204677504, 1205373696, 1206070272,
1206767232, 1207464704, 1208161664, 1208859904, 1209558528, 1210257536,
1210956928, 1211656832, 1212356224, 1213056768, 1213757952, 1214459392,
1215161216, 1215862656, 1216565376, 1217268352, 1217971840, 1218675712,
1219379200, 1220083840, 1220788992, 1221494528, 1222200448, 1222906752,
1223612672, 1224319872, 1225027456, 1225735424, 1226443648, 1227151616,
1227860864, 1228570496, 1229280512, 1229990912, 1230700928, 1231412096,
1232123776, 1232835840, 1233548288, 1234261248, 1234973696, 1235687424,
1236401536, 1237116032, 1237831040, 1238545536, 1239261312, 1239977472,
1240694144, 1241411072, 1242128512, 1242845568, 1243563776, 1244282496,
1245001600, 1245721088, 1246440192, 1247160448, 1247881216, 1248602368,
1249324032, 1250045184, 1250767616, 1251490432, 1252213632, 1252937344,
1253661440, 1254385152, 1255110016, 1255835392, 1256561152, 1257287424,
1258013184, 1258740096, 1259467648, 1260195456, 1260923648, 1261651584,
1262380800, 1263110272, 1263840256, 1264570624, 1265301504, 1266031872,
1266763520, 1267495552, 1268227968, 1268961024, 1269693440, 1270427264,
1271161472, 1271896064, 1272631168, 1273365760, 1274101632, 1274838016,
1275574784, 1276311808, 1277049472, 1277786624, 1278525056, 1279264000,
1280003328, 1280743040, 1281482368, 1282222976, 1282963968, 1283705344,
1284447232, 1285188736, 1285931392, 1286674560, 1287418240, 1288162176,
1288906624, 1289650688, 1290395904, 1291141760, 1291887872, 1292634496,
1293380608, 1294128128, 1294875904, 1295624320, 1296373120, 1297122304,
1297870976, 1298621056, 1299371520, 1300122496, 1300873856, 1301624832,
1302376960, 1303129600, 1303882752, 1304636288, 1305389312, 1306143872,
1306898688, 1307654016, 1308409600, 1309165696, 1309921536, 1310678528,
1311435904, 1312193920, 1312952192, 1313710080, 1314469248, 1315228928,
1315988992, 1316749568, 1317509632, 1318271104, 1319032960, 1319795200,
1320557952, 1321321088, 1322083840, 1322847872, 1323612416, 1324377216,
1325142656, 1325907584, 1326673920, 1327440512, 1328207744, 1328975360,
1329742464, 1330510976, 1331279872, 1332049152, 1332819072, 1333589248,
1334359168, 1335130240, 1335901824, 1336673920, 1337446400, 1338218368,
1338991744, 1339765632, 1340539904, 1341314560, 1342088832, 1342864512,
1343640576, 1344417024, 1345193984, 1345971456, 1346748416, 1347526656,
1348305408, 1349084672, 1349864320, 1350643456, 1351424000, 1352205056,
1352986496, 1353768448, 1354550784, 1355332608, 1356115968, 1356899712,
1357683840, 1358468480, 1359252608, 1360038144, 1360824192, 1361610624,
1362397440, 1363183872, 1363971712, 1364760064, 1365548672, 1366337792,
1367127424, 1367916672, 1368707200, 1369498240, 1370289664, 1371081472,
1371873024, 1372665856, 1373459072, 1374252800, 1375047040, 1375840768,
1376635904, 1377431552, 1378227584, 1379024000, 1379820928, 1380617472,
1381415296, 1382213760, 1383012480, 1383811840, 1384610560, 1385410816,
1386211456, 1387012480, 1387814144, 1388615168, 1389417728, 1390220672,
1391024128, 1391827968, 1392632320, 1393436288, 1394241536, 1395047296,
1395853568, 1396660224, 1397466368, 1398274048, 1399082112, 1399890688,
1400699648, 1401508224, 1402318080, 1403128576, 1403939456, 1404750848,
1405562624, 1406374016, 1407186816, 1408000000, 1408813696, 1409627904,
1410441728, 1411256704, 1412072320, 1412888320, 1413704960, 1414521856,
1415338368, 1416156288, 1416974720, 1417793664, 1418612992, 1419431808,
1420252160, 1421072896, 1421894144, 1422715904, 1423537280, 1424359808,
1425183104, 1426006784, 1426830848, 1427655296, 1428479488, 1429305088,
1430131072, 1430957568, 1431784576, 1432611072, 1433438976, 1434267392,
1435096192, 1435925632, 1436754432, 1437584768, 1438415616, 1439246848,
1440078720, 1440910848, 1441742720, 1442575872, 1443409664, 1444243584,
1445078400, 1445912576, 1446748032, 1447584256, 1448420864, 1449257856,
1450094464, 1450932480, 1451771008, 1452609920, 1453449472, 1454289408,
1455128960, 1455969920, 1456811264, 1457653248, 1458495616, 1459337600,
1460180864, 1461024768, 1461869056, 1462713984, 1463558272, 1464404096,
1465250304, 1466097152, 1466944384, 1467792128, 1468639488, 1469488256,
1470337408, 1471187200, 1472037376, 1472887168, 1473738368, 1474589952,
1475442304, 1476294912, 1477148160, 1478000768, 1478854912, 1479709696,
1480564608, 1481420288, 1482275456, 1483132160, 1483989248, 1484846976,
1485704960, 1486562688, 1487421696, 1488281344, 1489141504, 1490002048,
1490863104, 1491723776, 1492585856, 1493448448, 1494311424, 1495175040,
1496038144, 1496902656, 1497767808, 1498633344, 1499499392, 1500365056,
1501232128, 1502099712, 1502967808, 1503836416, 1504705536, 1505574016,
1506444032, 1507314688, 1508185856, 1509057408, 1509928576, 1510801280,
1511674240, 1512547840, 1513421952, 1514295680, 1515170816, 1516046464,
1516922624, 1517799296, 1518676224, 1519552896, 1520431104, 1521309824,
1522188928, 1523068800, 1523948032, 1524828672, 1525709824, 1526591616,
1527473792, 1528355456, 1529238784, 1530122496, 1531006720, 1531891712,
1532776832, 1533661824, 1534547968, 1535434880, 1536322304, 1537210112,
1538097408, 1538986368, 1539875840, 1540765696, 1541656192, 1542547072,
1543437440, 1544329472, 1545221888, 1546114944, 1547008384, 1547901440,
1548796032, 1549691136, 1550586624, 1551482752, 1552378368, 1553275520,
1554173184, 1555071232, 1555970048, 1556869248, 1557767936, 1558668288,
1559568896, 1560470272, 1561372032, 1562273408, 1563176320, 1564079616,
1564983424, 1565888000, 1566791808, 1567697408, 1568603392, 1569509760,
1570416896, 1571324416, 1572231424, 1573140096, 1574049152, 1574958976,
1575869184, 1576778752, 1577689984, 1578601728, 1579514112, 1580426880,
1581339264, 1582253056, 1583167488, 1584082432, 1584997888, 1585913984,
1586829440, 1587746304, 1588663936, 1589582080, 1590500736, 1591418880,
1592338560, 1593258752, 1594179584, 1595100928, 1596021632, 1596944000,
1597866880, 1598790272, 1599714304, 1600638848, 1601562752, 1602488320,
1603414272, 1604340992, 1605268224, 1606194816, 1607123072, 1608051968,
1608981120, 1609911040, 1610841344, 1611771264, 1612702848, 1613634688,
1614567168, 1615500288, 1616432896, 1617367040, 1618301824, 1619237120,
1620172800, 1621108096, 1622044928, 1622982272, 1623920128, 1624858752,
1625797632, 1626736256, 1627676416, 1628616960, 1629558272, 1630499968,
1631441152, 1632384000, 1633327232, 1634271232, 1635215744, 1636159744,
1637105152, 1638051328, 1638998016, 1639945088, 1640892928, 1641840128,
1642788992, 1643738368, 1644688384, 1645638784, 1646588672, 1647540352,
1648492416, 1649445120, 1650398464, 1651351168, 1652305408, 1653260288,
1654215808, 1655171712, 1656128256, 1657084288, 1658041856, 1659000064,
1659958784, 1660918272, 1661876992, 1662837376, 1663798400, 1664759936,
1665721984, 1666683520, 1667646720, 1668610560, 1669574784, 1670539776,
1671505024, 1672470016, 1673436544, };
#ifdef DEBUG_MIDI
#define MIDI_EVENT_DEBUG(dx,dy) printf("\r%s, %x\n",dx,dy)
#else
#define MIDI_EVENT_DEBUG(dx,dy)
#endif
#define MAX_AUTO_AMP 2.0
/*
* =========================
* Internal Functions
* =========================
*/
void Instruments::FreePatches()
{
int i;
struct _patch * tmp_patch;
struct _sample * tmp_sample;
for (i = 0; i < 128; i++) {
while (patch[i]) {
while (patch[i]->first_sample) {
tmp_sample = patch[i]->first_sample->next;
free(patch[i]->first_sample->data);
free(patch[i]->first_sample);
patch[i]->first_sample = tmp_sample;
}
free(patch[i]->filename);
tmp_patch = patch[i]->next;
free(patch[i]);
patch[i] = tmp_patch;
}
}
}
/* wm_strdup -- adds extra space for appending up to 4 chars */
static char *wm_strdup (const char *str) {
size_t l = strlen(str) + 5;
char *d = (char *) malloc(l * sizeof(char));
if (d) {
strcpy(d, str);
return d;
}
return NULL;
}
static inline int wm_isdigit(int c) {
return (c >= '0' && c <= '9');
}
#define TOKEN_CNT_INC 8
static char** WM_LC_Tokenize_Line(char *line_data)
{
int line_length = (int)strlen(line_data);
int token_data_length = 0;
int line_ofs = 0;
int token_start = 0;
char **token_data = NULL;
int token_count = 0;
bool in_quotes = false;
if (line_length == 0)
return NULL;
do {
/* ignore everything after # */
if (line_data[line_ofs] == '#') {
break;
}
if (line_data[line_ofs] == '"')
{
in_quotes = !in_quotes;
}
else if (!in_quotes && ((line_data[line_ofs] == ' ') || (line_data[line_ofs] == '\t'))) {
/* whitespace means we aren't in a token */
if (token_start) {
token_start = 0;
line_data[line_ofs] = '\0';
}
} else {
if (!token_start) {
/* the start of a token in the line */
token_start = 1;
if (token_count >= token_data_length) {
token_data_length += TOKEN_CNT_INC;
token_data = (char**)realloc(token_data, token_data_length * sizeof(char *));
if (token_data == NULL) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_MEM,"to parse config", errno);
return NULL;
}
}
token_data[token_count] = &line_data[line_ofs];
token_count++;
}
}
line_ofs++;
} while (line_ofs != line_length);
/* if we have found some tokens then add a null token to the end */
if (token_count) {
if (token_count >= token_data_length) {
token_data = (char**)realloc(token_data,
((token_count + 1) * sizeof(char *)));
}
token_data[token_count] = NULL;
}
return token_data;
}
int Instruments::LoadConfig(const char *config_parm)
{
unsigned long int config_size = 0;
char *config_buffer = NULL;
const char *dir_end = NULL;
char *config_dir = NULL;
unsigned long int config_ptr = 0;
unsigned long int line_start_ptr = 0;
unsigned short int patchid = 0;
struct _patch * tmp_patch;
char **line_tokens = NULL;
int token_count = 0;
std::string config_file_s;
config_buffer = (char *)_WM_BufferFile(sfreader, config_parm, &config_size, &config_file_s);
if (!config_buffer) {
FreePatches();
return -1;
}
auto config_file = config_file_s.c_str();
// This part was rewritten because the original depended on a header that was GPL'd.
dir_end = strrchr(config_file, '/');
#ifdef _WIN32
const char *dir_end2 = strrchr(config_file, '\\');
if (dir_end2 > dir_end) dir_end = dir_end2;
#endif
if (dir_end) {
config_dir = (char*)malloc((dir_end - config_file + 2));
if (config_dir == NULL) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_MEM, "to parse config",
errno);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD, config_file, 0);
FreePatches();
free(config_buffer);
return -1;
}
strncpy(config_dir, config_file, (dir_end - config_file + 1));
config_dir[dir_end - config_file + 1] = '\0';
}
config_ptr = 0;
line_start_ptr = 0;
/* handle files without a newline at the end: this relies on
* _WM_BufferFile() allocating the buffer with one extra byte */
config_buffer[config_size] = '\n';
while (config_ptr <= config_size) {
if (config_buffer[config_ptr] == '\r' ||
config_buffer[config_ptr] == '\n')
{
config_buffer[config_ptr] = '\0';
if (config_ptr != line_start_ptr) {
line_tokens = WM_LC_Tokenize_Line(&config_buffer[line_start_ptr]);
if (line_tokens) {
if (stricmp(line_tokens[0], "dir") == 0) {
free(config_dir);
if (!line_tokens[1]) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(missing name in dir line)", 0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(line_tokens);
free(config_buffer);
return -1;
} else if (!(config_dir = wm_strdup(line_tokens[1]))) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_MEM,
"to parse config", errno);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(line_tokens);
free(config_buffer);
return -1;
}
if (!IS_DIR_SEPARATOR(config_dir[strlen(config_dir) - 1])) {
config_dir[strlen(config_dir) + 1] = '\0';
config_dir[strlen(config_dir)] = '/';
}
} else if (stricmp(line_tokens[0], "source") == 0) {
char *new_config = NULL;
if (!line_tokens[1]) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(missing name in source line)", 0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(line_tokens);
free(config_buffer);
return -1;
} else if (!IS_ABSOLUTE_PATH(line_tokens[1]) && config_dir) {
new_config = (char*)malloc(
strlen(config_dir) + strlen(line_tokens[1])
+ 1);
if (new_config == NULL) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_MEM,
"to parse config", errno);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
strcpy(new_config, config_dir);
strcpy(&new_config[strlen(config_dir)], line_tokens[1]);
} else {
if (!(new_config = wm_strdup(line_tokens[1]))) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_MEM,
"to parse config", errno);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(line_tokens);
free(config_buffer);
return -1;
}
}
if (LoadConfig(new_config) == -1) {
free(new_config);
free(line_tokens);
free(config_buffer);
free(config_dir);
return -1;
}
free(new_config);
} else if (stricmp(line_tokens[0], "bank") == 0) {
if (!line_tokens[1] || !wm_isdigit(line_tokens[1][0])) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(syntax error in bank line)", 0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
patchid = (atoi(line_tokens[1]) & 0xFF) << 8;
} else if (stricmp(line_tokens[0], "drumset") == 0) {
if (!line_tokens[1] || !wm_isdigit(line_tokens[1][0])) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(syntax error in drumset line)", 0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
patchid = ((atoi(line_tokens[1]) & 0xFF) << 8) | 0x80;
} else if (stricmp(line_tokens[0], "reverb_room_width") == 0) {
if (!line_tokens[1] || !wm_isdigit(line_tokens[1][0])) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(syntax error in reverb_room_width line)",
0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
reverb_room_width = (float) atof(line_tokens[1]);
if (reverb_room_width < 1.0f) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(reverb_room_width < 1 meter, setting to minimum of 1 meter)",
0);
reverb_room_width = 1.0f;
} else if (reverb_room_width > 100.0f) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(reverb_room_width > 100 meters, setting to maximum of 100 meters)",
0);
reverb_room_width = 100.0f;
}
} else if (stricmp(line_tokens[0], "reverb_room_length") == 0) {
if (!line_tokens[1] || !wm_isdigit(line_tokens[1][0])) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(syntax error in reverb_room_length line)",
0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
reverb_room_length = (float) atof(line_tokens[1]);
if (reverb_room_length < 1.0f) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(reverb_room_length < 1 meter, setting to minimum of 1 meter)",
0);
reverb_room_length = 1.0f;
} else if (reverb_room_length > 100.0f) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(reverb_room_length > 100 meters, setting to maximum of 100 meters)",
0);
reverb_room_length = 100.0f;
}
} else if (stricmp(line_tokens[0], "reverb_listener_posx") == 0) {
if (!line_tokens[1] || !wm_isdigit(line_tokens[1][0])) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(syntax error in reverb_listen_posx line)",
0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
reverb_listen_posx = (float) atof(line_tokens[1]);
if ((reverb_listen_posx > reverb_room_width)
|| (reverb_listen_posx < 0.0f)) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(reverb_listen_posx set outside of room)",
0);
reverb_listen_posx = reverb_room_width / 2.0f;
}
} else if (stricmp(line_tokens[0],
"reverb_listener_posy") == 0) {
if (!line_tokens[1] || !wm_isdigit(line_tokens[1][0])) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(syntax error in reverb_listen_posy line)",
0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
reverb_listen_posy = (float) atof(line_tokens[1]);
if ((reverb_listen_posy > reverb_room_width)
|| (reverb_listen_posy < 0.0f)) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(reverb_listen_posy set outside of room)",
0);
reverb_listen_posy = reverb_room_length * 0.75f;
}
} else if (stricmp(line_tokens[0],
"guspat_editor_author_cant_read_so_fix_release_time_for_me")
== 0) {
fix_release = 1;
} else if (stricmp(line_tokens[0], "auto_amp") == 0) {
auto_amp = 1;
} else if (stricmp(line_tokens[0], "auto_amp_with_amp")
== 0) {
auto_amp = 1;
auto_amp_with_amp = 1;
} else if (wm_isdigit(line_tokens[0][0])) {
patchid = (patchid & 0xFF80)
| (atoi(line_tokens[0]) & 0x7F);
if (patch[(patchid & 0x7F)] == NULL) {
patch[(patchid & 0x7F)] = (struct _patch*)malloc(
sizeof(struct _patch));
if (patch[(patchid & 0x7F)] == NULL) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_MEM,
NULL, errno);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
tmp_patch = patch[(patchid & 0x7F)];
tmp_patch->patchid = patchid;
tmp_patch->filename = NULL;
tmp_patch->amp = 1024;
tmp_patch->note = 0;
tmp_patch->next = NULL;
tmp_patch->first_sample = NULL;
tmp_patch->loaded = 0;
tmp_patch->inuse_count = 0;
} else {
tmp_patch = patch[(patchid & 0x7F)];
if (tmp_patch->patchid == patchid) {
free(tmp_patch->filename);
tmp_patch->filename = NULL;
tmp_patch->amp = 1024;
tmp_patch->note = 0;
} else {
if (tmp_patch->next) {
while (tmp_patch->next) {
if (tmp_patch->next->patchid == patchid)
break;
tmp_patch = tmp_patch->next;
}
if (tmp_patch->next == NULL) {
if ((tmp_patch->next = (struct _patch*)malloc(
sizeof(struct _patch)))
== NULL) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_MEM, NULL, 0);
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_LOAD, config_file,
0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
tmp_patch = tmp_patch->next;
tmp_patch->patchid = patchid;
tmp_patch->filename = NULL;
tmp_patch->amp = 1024;
tmp_patch->note = 0;
tmp_patch->next = NULL;
tmp_patch->first_sample = NULL;
tmp_patch->loaded = 0;
tmp_patch->inuse_count = 0;
} else {
tmp_patch = tmp_patch->next;
free(tmp_patch->filename);
tmp_patch->filename = NULL;
tmp_patch->amp = 1024;
tmp_patch->note = 0;
}
} else {
tmp_patch->next = (struct _patch*)malloc(
sizeof(struct _patch));
if (tmp_patch->next == NULL) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_MEM, NULL, errno);
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_LOAD, config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
tmp_patch = tmp_patch->next;
tmp_patch->patchid = patchid;
tmp_patch->filename = NULL;
tmp_patch->amp = 1024;
tmp_patch->note = 0;
tmp_patch->next = NULL;
tmp_patch->first_sample = NULL;
tmp_patch->loaded = 0;
tmp_patch->inuse_count = 0;
}
}
}
if (!line_tokens[1]) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(missing name in patch line)", 0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
} else if (!IS_ABSOLUTE_PATH(line_tokens[1]) && config_dir) {
tmp_patch->filename = (char*)malloc(
strlen(config_dir) + strlen(line_tokens[1])
+ 5);
if (tmp_patch->filename == NULL) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_MEM,
NULL, 0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
strcpy(tmp_patch->filename, config_dir);
strcat(tmp_patch->filename, line_tokens[1]);
} else {
if (!(tmp_patch->filename = wm_strdup(line_tokens[1]))) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_MEM,
NULL, 0);
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_LOAD,
config_file, 0);
FreePatches();
free(config_dir);
free(line_tokens);
free(config_buffer);
return -1;
}
}
if (strnicmp(
&tmp_patch->filename[strlen(tmp_patch->filename)
- 4], ".pat", 4) != 0) {
strcat(tmp_patch->filename, ".pat");
}
tmp_patch->env[0].set = 0x00;
tmp_patch->env[1].set = 0x00;
tmp_patch->env[2].set = 0x00;
tmp_patch->env[3].set = 0x00;
tmp_patch->env[4].set = 0x00;
tmp_patch->env[5].set = 0x00;
tmp_patch->keep = 0;
tmp_patch->remove = 0;
token_count = 0;
while (line_tokens[token_count]) {
if (strnicmp(line_tokens[token_count], "amp=", 4)
== 0) {
if (!wm_isdigit(line_tokens[token_count][4])) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_INVALID_ARG,
"(syntax error in patch line)", 0);
} else {
tmp_patch->amp = (atoi(
&line_tokens[token_count][4]) << 10)
/ 100;
}
} else if (strnicmp(line_tokens[token_count],
"note=", 5) == 0) {
if (!wm_isdigit(line_tokens[token_count][5])) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_INVALID_ARG,
"(syntax error in patch line)", 0);
} else {
tmp_patch->note = atoi(
&line_tokens[token_count][5]);
}
} else if (strnicmp(line_tokens[token_count],
"env_time", 8) == 0) {
if ((!wm_isdigit(line_tokens[token_count][8]))
|| (!wm_isdigit(
line_tokens[token_count][10]))
|| (line_tokens[token_count][9] != '=')) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_INVALID_ARG,
"(syntax error in patch line)", 0);
} else {
unsigned int env_no = atoi(
&line_tokens[token_count][8]);
if (env_no > 5) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_INVALID_ARG,
"(syntax error in patch line)",
0);
} else {
tmp_patch->env[env_no].time =
(float) atof(
&line_tokens[token_count][10]);
if ((tmp_patch->env[env_no].time
> 45000.0f)
|| (tmp_patch->env[env_no].time
< 1.47f)) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_INVALID_ARG,
"(range error in patch line)",
0);
tmp_patch->env[env_no].set &= 0xFE;
} else {
tmp_patch->env[env_no].set |= 0x01;
}
}
}
} else if (strnicmp(line_tokens[token_count],
"env_level", 9) == 0) {
if ((!wm_isdigit(line_tokens[token_count][9]))
|| (!wm_isdigit(
line_tokens[token_count][11]))
|| (line_tokens[token_count][10] != '=')) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_INVALID_ARG,
"(syntax error in patch line)", 0);
} else {
unsigned int env_no = atoi(
&line_tokens[token_count][9]);
if (env_no > 5) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_INVALID_ARG,
"(syntax error in patch line)",
0);
} else {
tmp_patch->env[env_no].level =
(float) atof(
&line_tokens[token_count][11]);
if ((tmp_patch->env[env_no].level > 1.0f)
|| (tmp_patch->env[env_no].level
< 0.0f)) {
_WM_ERROR(__FUNCTION__, __LINE__,
WM_ERR_INVALID_ARG,
"(range error in patch line)",
0);
tmp_patch->env[env_no].set &= 0xFD;
} else {
tmp_patch->env[env_no].set |= 0x02;
}
}
}
} else if (stricmp(line_tokens[token_count],
"keep=loop") == 0) {
tmp_patch->keep |= SAMPLE_LOOP;
} else if (stricmp(line_tokens[token_count],
"keep=env") == 0) {
tmp_patch->keep |= SAMPLE_ENVELOPE;
} else if (stricmp(line_tokens[token_count],
"remove=sustain") == 0) {
tmp_patch->remove |= SAMPLE_SUSTAIN;
} else if (stricmp(line_tokens[token_count],
"remove=clamped") == 0) {
tmp_patch->remove |= SAMPLE_CLAMPED;
}
token_count++;
}
}
}
/* free up tokens */
free(line_tokens);
}
line_start_ptr = config_ptr + 1;
}
config_ptr++;
}
free(config_buffer);
free(config_dir);
return 0;
}
/* sample loading */
int Instruments::load_sample(struct _patch *sample_patch)
{
struct _sample *guspat = NULL;
struct _sample *tmp_sample = NULL;
unsigned int i = 0;
/* we only want to try loading the guspat once. */
sample_patch->loaded = 1;
if ((guspat = load_gus_pat(sample_patch->filename)) == NULL) {
return -1;
}
if (auto_amp) {
signed short int tmp_max = 0;
signed short int tmp_min = 0;
signed short samp_max = 0;
signed short samp_min = 0;
tmp_sample = guspat;
do {
samp_max = 0;
samp_min = 0;
for (i = 0; i < (tmp_sample->data_length >> 10); i++) {
if (tmp_sample->data[i] > samp_max)
samp_max = tmp_sample->data[i];
if (tmp_sample->data[i] < samp_min)
samp_min = tmp_sample->data[i];
}
if (samp_max > tmp_max)
tmp_max = samp_max;
if (samp_min < tmp_min)
tmp_min = samp_min;
tmp_sample = tmp_sample->next;
} while (tmp_sample);
if (auto_amp_with_amp) {
if (tmp_max >= -tmp_min) {
sample_patch->amp = (sample_patch->amp
* ((32767 << 10) / tmp_max)) >> 10;
} else {
sample_patch->amp = (sample_patch->amp
* ((32768 << 10) / -tmp_min)) >> 10;
}
} else {
if (tmp_max >= -tmp_min) {
sample_patch->amp = (32767 << 10) / tmp_max;
} else {
sample_patch->amp = (32768 << 10) / -tmp_min;
}
}
}
sample_patch->first_sample = guspat;
if (sample_patch->patchid & 0x0080) {
if (!(sample_patch->keep & SAMPLE_LOOP)) {
do {
guspat->modes &= 0xFB;
guspat = guspat->next;
} while (guspat);
}
guspat = sample_patch->first_sample;
if (!(sample_patch->keep & SAMPLE_ENVELOPE)) {
do {
guspat->modes &= 0xBF;
guspat = guspat->next;
} while (guspat);
}
guspat = sample_patch->first_sample;
}
if (sample_patch->patchid == 47) {
do {
if (!(guspat->modes & SAMPLE_LOOP)) {
for (i = 3; i < 6; i++) {
guspat->env_target[i] = guspat->env_target[2];
guspat->env_rate[i] = guspat->env_rate[2];
}
}
guspat = guspat->next;
} while (guspat);
guspat = sample_patch->first_sample;
}
do {
if ((sample_patch->remove & SAMPLE_SUSTAIN)
&& (guspat->modes & SAMPLE_SUSTAIN)) {
guspat->modes ^= SAMPLE_SUSTAIN;
}
if ((sample_patch->remove & SAMPLE_CLAMPED)
&& (guspat->modes & SAMPLE_CLAMPED)) {
guspat->modes ^= SAMPLE_CLAMPED;
}
if (sample_patch->keep & SAMPLE_ENVELOPE) {
guspat->modes |= SAMPLE_ENVELOPE;
}
for (i = 0; i < 6; i++) {
if (guspat->modes & SAMPLE_ENVELOPE) {
if (sample_patch->env[i].set & 0x02) {
guspat->env_target[i] = 16448
* (signed long int) (255.0
* sample_patch->env[i].level);
}
if (sample_patch->env[i].set & 0x01) {
guspat->env_rate[i] = (signed long int) (4194303.0
/ ((float) _WM_SampleRate
* (sample_patch->env[i].time / 1000.0)));
}
} else {
guspat->env_target[i] = 4194303;
guspat->env_rate[i] = (signed long int) (4194303.0
/ ((float) _WM_SampleRate * env_time_table[63]));
}
}
guspat = guspat->next;
} while (guspat);
return 0;
}
struct _patch *Instruments::get_patch_data(unsigned short patchid)
{
struct _patch *search_patch;
search_patch = patch[patchid & 0x007F];
if (search_patch == NULL) {
return NULL;
}
while (search_patch) {
if (search_patch->patchid == patchid) {
return search_patch;
}
search_patch = search_patch->next;
}
if ((patchid >> 8) != 0) {
return (get_patch_data(patchid & 0x00FF));
}
return NULL;
}
void Instruments::load_patch(struct _mdi *mdi, unsigned short patchid)
{
unsigned int i;
struct _patch *tmp_patch = NULL;
for (i = 0; i < mdi->patch_count; i++) {
if (mdi->patches[i]->patchid == patchid) {
return;
}
}
tmp_patch = get_patch_data(patchid);
if (tmp_patch == NULL) {
return;
}
if (!tmp_patch->loaded) {
if (load_sample(tmp_patch) == -1) {
return;
}
}
if (tmp_patch->first_sample == NULL) {
return;
}
mdi->patch_count++;
mdi->patches = (struct _patch**)realloc(mdi->patches,
(sizeof(struct _patch*) * mdi->patch_count));
mdi->patches[mdi->patch_count - 1] = tmp_patch;
tmp_patch->inuse_count++;
}
Instruments::~Instruments()
{
FreePatches();
delete sfreader;
}
static struct _sample *get_sample_data(struct _patch *sample_patch, unsigned long int freq)
{
struct _sample *last_sample = NULL;
struct _sample *return_sample = NULL;
if (sample_patch == NULL) {
return NULL;
}
if (sample_patch->first_sample == NULL) {
return NULL;
}
if (freq == 0) {
return sample_patch->first_sample;
}
return_sample = sample_patch->first_sample;
last_sample = sample_patch->first_sample;
while (last_sample) {
if (freq > last_sample->freq_low) {
if (freq < last_sample->freq_high) {
return last_sample;
} else {
return_sample = last_sample;
}
}
last_sample = last_sample->next;
}
return return_sample;
}
/* Should be called in any function that effects note volumes */
void Renderer::AdjustNoteVolumes(struct _mdi *mdi, unsigned char ch, struct _note *nte)
{
double premix_dBm;
double premix_lin;
int pan_ofs;
double premix_dBm_left;
double premix_dBm_right;
double premix_left;
double premix_right;
double volume_adj;
unsigned vol_ofs;
/*
Pointless CPU heating checks to shoosh up a compiler
*/
if (ch > 0x0f) ch = 0x0f;
pan_ofs = mdi->channel[ch].balance + mdi->channel[ch].pan - 64;
vol_ofs = (nte->velocity * ((mdi->channel[ch].expression * mdi->channel[ch].volume) / 127)) / 127;
/*
This value is to reduce the chance of clipping.
Higher value means lower overall volume,
Lower value means higher overall volume.
NOTE: The lower the value the higher the chance of clipping.
FIXME: Still needs tuning. Clipping heard at a value of 3.75
*/
#define VOL_DIVISOR 4.0
volume_adj = ((float)WM_MasterVolume / 1024.0) / VOL_DIVISOR;
// Pan 0 and 1 are both hard left so 64 can be centered
if (pan_ofs > 127) pan_ofs = 127;
if (--pan_ofs < 0) pan_ofs = 0;
premix_dBm_left = dBm_pan_volume[126-pan_ofs];
premix_dBm_right = dBm_pan_volume[pan_ofs];
if (mdi->info.mixer_options & WM_MO_LOG_VOLUME) {
premix_dBm = dBm_volume[vol_ofs];
premix_dBm_left += premix_dBm;
premix_dBm_right += premix_dBm;
premix_left = (pow(10.0,(premix_dBm_left / 20.0))) * volume_adj;
premix_right = (pow(10.0,(premix_dBm_right / 20.0))) * volume_adj;
} else {
premix_lin = (float)(lin_volume[vol_ofs]) / 1024.0;
premix_left = premix_lin * pow(10.0, (premix_dBm_left / 20)) * volume_adj;
premix_right = premix_lin * pow(10.0, (premix_dBm_right / 20)) * volume_adj;
}
nte->left_mix_volume = (int)(premix_left * 1024.0);
nte->right_mix_volume = (int)(premix_right * 1024.0);
}
/* Should be called in any function that effects channel volumes */
/* Calling this function with a value > 15 will make it adjust notes on all channels */
void Renderer::AdjustChannelVolumes(struct _mdi *mdi, unsigned char ch)
{
struct _note *nte = mdi->note;
if (nte != NULL) {
do {
if (ch <= 15) {
if ((nte->noteid >> 8) == ch) {
goto _DO_ADJUST;
}
} else {
_DO_ADJUST:
AdjustNoteVolumes(mdi, ch, nte);
if (nte->replay) AdjustNoteVolumes(mdi, ch, nte->replay);
}
nte = nte->next;
} while (nte != NULL);
}
}
static void do_note_off_extra(struct _note *nte) {
nte->is_off = 0;
if (!(nte->modes & SAMPLE_ENVELOPE)) {
if (nte->modes & SAMPLE_LOOP) {
nte->modes ^= SAMPLE_LOOP;
}
nte->env_inc = 0;
} else if (nte->hold) {
nte->hold |= HOLD_OFF;
} else if (nte->modes & SAMPLE_SUSTAIN) {
if (nte->env < 3) {
nte->env = 3;
if (nte->env_level > nte->sample->env_target[3]) {
nte->env_inc = -nte->sample->env_rate[3];
} else {
nte->env_inc = nte->sample->env_rate[3];
}
}
} else if (nte->modes & SAMPLE_CLAMPED) {
if (nte->env < 5) {
nte->env = 5;
if (nte->env_level > nte->sample->env_target[5]) {
nte->env_inc = -nte->sample->env_rate[5];
} else {
nte->env_inc = nte->sample->env_rate[5];
}
}
} else if (nte->env < 4) {
nte->env = 4;
if (nte->env_level > nte->sample->env_target[4]) {
nte->env_inc = -nte->sample->env_rate[4];
} else {
nte->env_inc = nte->sample->env_rate[4];
}
}
}
static void do_note_off(struct _mdi *mdi, struct _event_data *data) {
struct _note *nte;
unsigned char ch = data->channel;
MIDI_EVENT_DEBUG(__FUNCTION__,ch);
nte = &mdi->note_table[0][ch][(data->data >> 8)];
if (!nte->active)
nte = &mdi->note_table[1][ch][(data->data >> 8)];
if (!nte->active) {
return;
}
if ((mdi->channel[ch].isdrum) && (!(nte->modes & SAMPLE_LOOP))) {
return;
}
if ((nte->modes & SAMPLE_ENVELOPE) && (nte->env == 0)) {
// This is a fix for notes that end before the
// initial step of the envelope has completed
// making it impossible to hear them at times.
nte->is_off = 1;
} else {
do_note_off_extra(nte);
}
}
unsigned long int Renderer::get_inc(struct _mdi *mdi, struct _note *nte)
{
int ch = nte->noteid >> 8;
signed long int note_f;
unsigned long int freq;
if (nte->patch->note != 0) {
note_f = nte->patch->note * 100;
} else {
note_f = (nte->noteid & 0x7f) * 100;
}
note_f += mdi->channel[ch].pitch_adjust;
if (note_f < 0) {
note_f = 0;
} else if (note_f > 12700) {
note_f = 12700;
}
freq = freq_table[(note_f % 1200)] >> (10 - (note_f / 1200));
return (((freq / ((instruments->GetSampleRate() * 100) / 1024)) * 1024
/ nte->sample->inc_div));
}
void Renderer::do_note_on(struct _mdi *mdi, struct _event_data *data)
{
struct _note *nte;
struct _note *prev_nte;
struct _note *nte_array;
unsigned long int freq = 0;
struct _patch *patch;
struct _sample *sample;
unsigned char ch = data->channel;
unsigned char note = (unsigned char)(data->data >> 8);
unsigned char velocity = (unsigned char)(data->data & 0xFF);
if (velocity == 0x00) {
do_note_off(mdi, data);
return;
}
MIDI_EVENT_DEBUG(__FUNCTION__,ch);
if (!mdi->channel[ch].isdrum) {
patch = mdi->channel[ch].patch;
if (patch == NULL) {
return;
}
freq = freq_table[(note % 12) * 100] >> (10 - (note / 12));
} else {
patch = instruments->get_patch_data(((mdi->channel[ch].bank << 8) | note | 0x80));
if (patch == NULL) {
return;
}
if (patch->note) {
freq = freq_table[(patch->note % 12) * 100]
>> (10 - (patch->note / 12));
} else {
freq = freq_table[(note % 12) * 100] >> (10 - (note / 12));
}
}
sample = get_sample_data(patch, (freq / 100));
if (sample == NULL) {
return;
}
nte = &mdi->note_table[0][ch][note];
if (nte->active) {
if ((nte->modes & SAMPLE_ENVELOPE) && (nte->env < 3)
&& (!(nte->hold & HOLD_OFF)))
return;
nte->replay = &mdi->note_table[1][ch][note];
nte->env = 6;
nte->env_inc = -nte->sample->env_rate[6];
nte = nte->replay;
} else {
if (mdi->note_table[1][ch][note].active) {
if ((nte->modes & SAMPLE_ENVELOPE) && (nte->env < 3)
&& (!(nte->hold & HOLD_OFF)))
return;
mdi->note_table[1][ch][note].replay = nte;
mdi->note_table[1][ch][note].env = 6;
mdi->note_table[1][ch][note].env_inc =
-mdi->note_table[1][ch][note].sample->env_rate[6];
} else {
nte_array = mdi->note;
if (nte_array == NULL) {
mdi->note = nte;
} else {
do {
prev_nte = nte_array;
nte_array = nte_array->next;
} while (nte_array);
prev_nte->next = nte;
}
nte->active = 1;
nte->next = NULL;
}
}
nte->noteid = (ch << 8) | note;
nte->patch = patch;
nte->sample = sample;
nte->sample_pos = 0;
nte->sample_inc = get_inc(mdi, nte);
nte->velocity = velocity;
nte->env = 0;
nte->env_inc = nte->sample->env_rate[0];
nte->env_level = 0;
nte->modes = sample->modes;
nte->hold = mdi->channel[ch].hold;
nte->replay = NULL;
nte->is_off = 0;
AdjustNoteVolumes(mdi, ch, nte);
}
void Renderer::do_aftertouch(struct _mdi *mdi, struct _event_data *data)
{
struct _note *nte;
unsigned char ch = data->channel;
MIDI_EVENT_DEBUG(__FUNCTION__,ch);
nte = &mdi->note_table[0][ch][(data->data >> 8)];
if (!nte->active) {
nte = &mdi->note_table[1][ch][(data->data >> 8)];
if (!nte->active) {
return;
}
}
nte->velocity = (unsigned char)data->data;
AdjustNoteVolumes(mdi, ch, nte);
if (nte->replay) {
nte->replay->velocity = (unsigned char)data->data;
AdjustNoteVolumes(mdi, ch, nte->replay);
}
}
static void do_control_bank_select(struct _mdi *mdi, struct _event_data *data) {
unsigned char ch = data->channel;
mdi->channel[ch].bank = (unsigned char)data->data;
}
static void do_control_data_entry_course(struct _mdi *mdi,
struct _event_data *data) {
unsigned char ch = data->channel;
int data_tmp;
if ((mdi->channel[ch].reg_non == 0)
&& (mdi->channel[ch].reg_data == 0x0000)) { /* Pitch Bend Range */
data_tmp = mdi->channel[ch].pitch_range % 100;
mdi->channel[ch].pitch_range = short(data->data * 100 + data_tmp);
/* printf("Data Entry Course: pitch_range: %i\n\r",mdi->channel[ch].pitch_range);*/
/* printf("Data Entry Course: data %li\n\r",data->data);*/
}
}
void Renderer::do_control_channel_volume(struct _mdi *mdi, struct _event_data *data)
{
unsigned char ch = data->channel;
mdi->channel[ch].volume = (unsigned char)data->data;
AdjustChannelVolumes(mdi, ch);
}
void Renderer::do_control_channel_balance(struct _mdi *mdi, struct _event_data *data)
{
unsigned char ch = data->channel;
mdi->channel[ch].balance = (signed char)(data->data);
AdjustChannelVolumes(mdi, ch);
}
void Renderer::do_control_channel_pan(struct _mdi *mdi, struct _event_data *data)
{
unsigned char ch = data->channel;
mdi->channel[ch].pan = (signed char)(data->data);
AdjustChannelVolumes(mdi, ch);
}
void Renderer::do_control_channel_expression(struct _mdi *mdi, struct _event_data *data)
{
unsigned char ch = data->channel;
mdi->channel[ch].expression = (unsigned char)data->data;
AdjustChannelVolumes(mdi, ch);
}
static void do_control_data_entry_fine(struct _mdi *mdi,
struct _event_data *data) {
unsigned char ch = data->channel;
int data_tmp;
if ((mdi->channel[ch].reg_non == 0)
&& (mdi->channel[ch].reg_data == 0x0000)) { /* Pitch Bend Range */
data_tmp = mdi->channel[ch].pitch_range / 100;
mdi->channel[ch].pitch_range = short((data_tmp * 100) + data->data);
/* printf("Data Entry Fine: pitch_range: %i\n\r",mdi->channel[ch].pitch_range);*/
/* printf("Data Entry Fine: data: %li\n\r", data->data);*/
}
}
static void do_control_channel_hold(struct _mdi *mdi, struct _event_data *data) {
struct _note *note_data = mdi->note;
unsigned char ch = data->channel;
if (data->data > 63) {
mdi->channel[ch].hold = 1;
} else {
mdi->channel[ch].hold = 0;
if (note_data) {
do {
if ((note_data->noteid >> 8) == ch) {
if (note_data->hold & HOLD_OFF) {
if (note_data->modes & SAMPLE_ENVELOPE) {
if (note_data->modes & SAMPLE_CLAMPED) {
if (note_data->env < 5) {
note_data->env = 5;
if (note_data->env_level
> note_data->sample->env_target[5]) {
note_data->env_inc =
-note_data->sample->env_rate[5];
} else {
note_data->env_inc =
note_data->sample->env_rate[5];
}
}
} else if (note_data->env < 4) {
note_data->env = 4;
if (note_data->env_level
> note_data->sample->env_target[4]) {
note_data->env_inc =
-note_data->sample->env_rate[4];
} else {
note_data->env_inc =
note_data->sample->env_rate[4];
}
}
} else {
if (note_data->modes & SAMPLE_LOOP) {
note_data->modes ^= SAMPLE_LOOP;
}
note_data->env_inc = 0;
}
}
note_data->hold = 0x00;
}
note_data = note_data->next;
} while (note_data);
}
}
}
static void do_control_data_increment(struct _mdi *mdi,
struct _event_data *data) {
unsigned char ch = data->channel;
if ((mdi->channel[ch].reg_non == 0)
&& (mdi->channel[ch].reg_data == 0x0000)) { /* Pitch Bend Range */
if (mdi->channel[ch].pitch_range < 0x3FFF)
mdi->channel[ch].pitch_range++;
}
}
static void do_control_data_decrement(struct _mdi *mdi,
struct _event_data *data) {
unsigned char ch = data->channel;
if ((mdi->channel[ch].reg_non == 0)
&& (mdi->channel[ch].reg_data == 0x0000)) { /* Pitch Bend Range */
if (mdi->channel[ch].pitch_range > 0)
mdi->channel[ch].pitch_range--;
}
}
static void do_control_non_registered_param_fine(struct _mdi *mdi,
struct _event_data *data) {
unsigned char ch = data->channel;
mdi->channel[ch].reg_data = (mdi->channel[ch].reg_data & 0x3F80)
| data->data;
mdi->channel[ch].reg_non = 1;
}
static void do_control_non_registered_param_course(struct _mdi *mdi,
struct _event_data *data) {
unsigned char ch = data->channel;
mdi->channel[ch].reg_data = (mdi->channel[ch].reg_data & 0x7F)
| (data->data << 7);
mdi->channel[ch].reg_non = 1;
}
static void do_control_registered_param_fine(struct _mdi *mdi,
struct _event_data *data) {
unsigned char ch = data->channel;
mdi->channel[ch].reg_data = (unsigned short) ((mdi->channel[ch].reg_data & 0x3F80)
| data->data);
mdi->channel[ch].reg_non = 0;
}
static void do_control_registered_param_course(struct _mdi *mdi,
struct _event_data *data) {
unsigned char ch = data->channel;
mdi->channel[ch].reg_data = (unsigned short) ((mdi->channel[ch].reg_data & 0x7F)
| (data->data << 7));
mdi->channel[ch].reg_non = 0;
}
static void do_control_channel_sound_off(struct _mdi *mdi,
struct _event_data *data) {
struct _note *note_data = mdi->note;
unsigned char ch = data->channel;
if (note_data) {
do {
if ((note_data->noteid >> 8) == ch) {
note_data->active = 0;
if (note_data->replay) {
note_data->replay = NULL;
}
}
note_data = note_data->next;
} while (note_data);
}
}
void Renderer::do_control_channel_controllers_off(struct _mdi *mdi, struct _event_data *data)
{
unsigned char ch = data->channel;
mdi->channel[ch].expression = 127;
mdi->channel[ch].pressure = 127;
mdi->channel[ch].reg_data = 0xffff;
mdi->channel[ch].pitch_range = 200;
mdi->channel[ch].pitch = 0;
mdi->channel[ch].pitch_adjust = 0;
mdi->channel[ch].hold = 0;
AdjustChannelVolumes(mdi, ch);
}
static void do_control_channel_notes_off(struct _mdi *mdi,
struct _event_data *data) {
struct _note *note_data = mdi->note;
unsigned char ch = data->channel;
if (mdi->channel[ch].isdrum)
return;
if (note_data) {
do {
if ((note_data->noteid >> 8) == ch) {
if (!note_data->hold) {
if (note_data->modes & SAMPLE_ENVELOPE) {
if (note_data->env < 5) {
if (note_data->env_level
> note_data->sample->env_target[5]) {
note_data->env_inc =
-note_data->sample->env_rate[5];
} else {
note_data->env_inc =
note_data->sample->env_rate[5];
}
note_data->env = 5;
}
}
} else {
note_data->hold |= HOLD_OFF;
}
}
note_data = note_data->next;
} while (note_data);
}
}
void Renderer::do_patch(struct _mdi *mdi, struct _event_data *data)
{
unsigned char ch = data->channel;
MIDI_EVENT_DEBUG(__FUNCTION__,ch);
if (!mdi->channel[ch].isdrum) {
mdi->channel[ch].patch = instruments->get_patch_data((unsigned short)(((mdi->channel[ch].bank << 8) | data->data)));
} else {
mdi->channel[ch].bank = (unsigned char)data->data;
}
}
void Renderer::do_channel_pressure(struct _mdi *mdi, struct _event_data *data)
{
struct _note *note_data = mdi->note;
unsigned char ch = data->channel;
MIDI_EVENT_DEBUG(__FUNCTION__,ch);
while (note_data) {
if ((note_data->noteid >> 8) == ch) {
note_data->velocity = (unsigned char)data->data;
AdjustNoteVolumes(mdi, ch, note_data);
if (note_data->replay) {
note_data->replay->velocity = (unsigned char)data->data;
AdjustNoteVolumes(mdi, ch, note_data->replay);
}
}
note_data = note_data->next;
}
}
void Renderer::do_pitch(struct _mdi *mdi, struct _event_data *data)
{
struct _note *note_data = mdi->note;
unsigned char ch = data->channel;
MIDI_EVENT_DEBUG(__FUNCTION__,ch);
mdi->channel[ch].pitch = short(data->data - 0x2000);
if (mdi->channel[ch].pitch < 0) {
mdi->channel[ch].pitch_adjust = mdi->channel[ch].pitch_range
* mdi->channel[ch].pitch / 8192;
} else {
mdi->channel[ch].pitch_adjust = mdi->channel[ch].pitch_range
* mdi->channel[ch].pitch / 8191;
}
if (note_data) {
do {
if ((note_data->noteid >> 8) == ch) {
note_data->sample_inc = get_inc(mdi, note_data);
}
note_data = note_data->next;
} while (note_data);
}
}
void Renderer::do_sysex_roland_drum_track(struct _mdi *mdi, struct _event_data *data)
{
unsigned char ch = data->channel;
MIDI_EVENT_DEBUG(__FUNCTION__,ch);
if (data->data > 0) {
mdi->channel[ch].isdrum = 1;
mdi->channel[ch].patch = NULL;
} else {
mdi->channel[ch].isdrum = 0;
mdi->channel[ch].patch = instruments->get_patch_data(0);
}
}
void Renderer::do_sysex_gm_reset(struct _mdi *mdi, struct _event_data *data)
{
int i;
for (i = 0; i < 16; i++) {
mdi->channel[i].bank = 0;
if (i != 9) {
mdi->channel[i].patch = instruments->get_patch_data(0);
} else {
mdi->channel[i].patch = NULL;
}
mdi->channel[i].hold = 0;
mdi->channel[i].volume = 100;
mdi->channel[i].pressure = 127;
mdi->channel[i].expression = 127;
mdi->channel[i].balance = 64;
mdi->channel[i].pan = 64;
mdi->channel[i].pitch = 0;
mdi->channel[i].pitch_range = 200;
mdi->channel[i].reg_data = 0xFFFF;
mdi->channel[i].isdrum = 0;
}
/* I would not expect notes to be active when this event
triggers but we'll adjust active notes as well just in case */
AdjustChannelVolumes(mdi,16); // A setting > 15 adjusts all channels
mdi->channel[9].isdrum = 1;
UNUSED(data); /* NOOP, to please the compiler gods */
}
void Renderer::do_sysex_roland_reset(struct _mdi *mdi, struct _event_data *data)
{
do_sysex_gm_reset(mdi, data);
}
void Renderer::do_sysex_yamaha_reset(struct _mdi *mdi, struct _event_data *data)
{
do_sysex_gm_reset(mdi, data);
}
struct _mdi *Renderer::Init_MDI()
{
struct _mdi *mdi;
mdi = new _mdi;
mdi->info.copyright = NULL;
mdi->info.mixer_options = WM_MixerOptions;
instruments->load_patch(mdi, 0x0000);
mdi->samples_to_mix = 0;
mdi->info.current_sample = 0;
mdi->info.total_midi_time = 0;
mdi->info.approx_total_samples = 0;
do_sysex_roland_reset(mdi, NULL);
return mdi;
}
static void freeMDI(struct _mdi *mdi)
{
struct _sample *tmp_sample;
unsigned long int i;
if (mdi->patch_count != 0) {
for (i = 0; i < mdi->patch_count; i++) {
mdi->patches[i]->inuse_count--;
if (mdi->patches[i]->inuse_count == 0) {
/* free samples here */
while (mdi->patches[i]->first_sample) {
tmp_sample = mdi->patches[i]->first_sample->next;
free(mdi->patches[i]->first_sample->data);
free(mdi->patches[i]->first_sample);
mdi->patches[i]->first_sample = tmp_sample;
}
mdi->patches[i]->loaded = 0;
}
}
free(mdi->patches);
}
free(mdi->tmp_info);
_WM_free_reverb(mdi->reverb);
if (mdi->mix_buffer) free(mdi->mix_buffer);
delete mdi;
}
static int *WM_Mix_Linear(midi * handle, int * buffer, unsigned long int count)
{
struct _mdi *mdi = (struct _mdi *)handle;
unsigned long int data_pos;
signed int premix, left_mix, right_mix;
struct _note *note_data = NULL;
do {
note_data = mdi->note;
left_mix = right_mix = 0;
if (note_data != NULL) {
while (note_data) {
/*
* ===================
* resample the sample
* ===================
*/
data_pos = note_data->sample_pos >> FPBITS;
premix = ((note_data->sample->data[data_pos] + (((note_data->sample->data[data_pos + 1] - note_data->sample->data[data_pos]) * (int)(note_data->sample_pos & FPMASK)) / 1024)) * (note_data->env_level >> 12)) / 1024;
left_mix += (premix * (int)note_data->left_mix_volume) / 1024;
right_mix += (premix * (int)note_data->right_mix_volume) / 1024;
/*
* ========================
* sample position checking
* ========================
*/
note_data->sample_pos += note_data->sample_inc;
if (note_data->modes & SAMPLE_LOOP) {
if (note_data->sample_pos > note_data->sample->loop_end) {
note_data->sample_pos =
note_data->sample->loop_start
+ ((note_data->sample_pos
- note_data->sample->loop_start)
% note_data->sample->loop_size);
}
} else if (note_data->sample_pos >= note_data->sample->data_length) {
goto END_THIS_NOTE;
}
if (note_data->env_inc == 0) {
note_data = note_data->next;
continue;
}
note_data->env_level += note_data->env_inc;
if (note_data->env_inc < 0) {
if (note_data->env_level > note_data->sample->env_target[note_data->env]) {
note_data = note_data->next;
continue;
}
} else if (note_data->env_inc > 0) {
if (note_data->env_level < note_data->sample->env_target[note_data->env]) {
note_data = note_data->next;
continue;
}
}
// Yes could have a condition here but
// it would create another bottleneck
note_data->env_level =
note_data->sample->env_target[note_data->env];
switch (note_data->env) {
case 0:
if (!(note_data->modes & SAMPLE_ENVELOPE)) {
note_data->env_inc = 0;
note_data = note_data->next;
continue;
}
break;
case 2:
if (note_data->modes & SAMPLE_SUSTAIN /*|| note_data->hold*/) {
note_data->env_inc = 0;
note_data = note_data->next;
continue;
} else if (note_data->modes & SAMPLE_CLAMPED) {
note_data->env = 5;
if (note_data->env_level
> note_data->sample->env_target[5]) {
note_data->env_inc =
-note_data->sample->env_rate[5];
} else {
note_data->env_inc =
note_data->sample->env_rate[5];
}
continue;
}
break;
case 5:
if (note_data->env_level == 0) {
goto END_THIS_NOTE;
}
/* sample release */
if (note_data->modes & SAMPLE_LOOP)
note_data->modes ^= SAMPLE_LOOP;
note_data->env_inc = 0;
note_data = note_data->next;
continue;
case 6:
END_THIS_NOTE:
if (note_data->replay != NULL) {
note_data->active = 0;
{
struct _note *prev_note = NULL;
struct _note *nte_array = mdi->note;
if (nte_array != note_data) {
do {
prev_note = nte_array;
nte_array = nte_array->next;
} while (nte_array != note_data);
}
if (prev_note) {
prev_note->next = note_data->replay;
} else {
mdi->note = note_data->replay;
}
note_data->replay->next = note_data->next;
note_data = note_data->replay;
note_data->active = 1;
}
} else {
note_data->active = 0;
{
struct _note *prev_note = NULL;
struct _note *nte_array = mdi->note;
if (nte_array != note_data) {
do {
prev_note = nte_array;
nte_array = nte_array->next;
} while ((nte_array != note_data)
&& (nte_array));
}
if (prev_note) {
prev_note->next = note_data->next;
} else {
mdi->note = note_data->next;
}
note_data = note_data->next;
}
}
continue;
}
note_data->env++;
if (note_data->is_off == 1) {
do_note_off_extra(note_data);
}
if (note_data->env_level
> note_data->sample->env_target[note_data->env]) {
note_data->env_inc =
-note_data->sample->env_rate[note_data->env];
} else {
note_data->env_inc =
note_data->sample->env_rate[note_data->env];
}
note_data = note_data->next;
continue;
}
/*
* =========================
* mix the channels together
* =========================
*/
}
*buffer++ = left_mix;
*buffer++ = right_mix;
} while (--count);
return buffer;
}
static int *WM_Mix_Gauss(midi * handle, int * buffer, unsigned long int count)
{
if (!gauss_table.size()) init_gauss();
struct _mdi *mdi = (struct _mdi *)handle;
unsigned long int data_pos;
signed int premix, left_mix, right_mix;
struct _note *note_data = NULL;
signed short int *sptr;
double y, xd;
double *gptr, *gend;
int left, right, temp_n;
int ii, jj;
do {
note_data = mdi->note;
left_mix = right_mix = 0;
if (note_data != NULL) {
while (note_data) {
/*
* ===================
* resample the sample
* ===================
*/
data_pos = note_data->sample_pos >> FPBITS;
/* check to see if we're near one of the ends */
left = data_pos;
right = (note_data->sample->data_length >> FPBITS) - left
- 1;
temp_n = (right << 1) - 1;
if (temp_n <= 0)
temp_n = 1;
if (temp_n > (left << 1) + 1)
temp_n = (left << 1) + 1;
/* use Newton if we can't fill the window */
if (temp_n < gauss_n) {
xd = note_data->sample_pos & FPMASK;
xd /= (1L << FPBITS);
xd += temp_n >> 1;
y = 0;
sptr = note_data->sample->data
+ (note_data->sample_pos >> FPBITS)
- (temp_n >> 1);
for (ii = temp_n; ii;) {
for (jj = 0; jj <= ii; jj++)
y += sptr[jj] * newt_coeffs[ii][jj];
y *= xd - --ii;
}
y += *sptr;
} else { /* otherwise, use Gauss as usual */
y = 0;
gptr = &gauss_table[(note_data->sample_pos & FPMASK) *
(gauss_n + 1)];
gend = gptr + gauss_n;
sptr = note_data->sample->data
+ (note_data->sample_pos >> FPBITS)
- (gauss_n >> 1);
do {
y += *(sptr++) * *(gptr++);
} while (gptr <= gend);
}
premix = (int)((y * (note_data->env_level >> 12)) / 1024);
left_mix += (premix * (int)note_data->left_mix_volume) / 1024;
right_mix += (premix * (int)note_data->right_mix_volume) / 1024;
/*
* ========================
* sample position checking
* ========================
*/
note_data->sample_pos += note_data->sample_inc;
if (note_data->sample_pos > note_data->sample->loop_end)
{
if (note_data->modes & SAMPLE_LOOP) {
note_data->sample_pos =
note_data->sample->loop_start
+ ((note_data->sample_pos
- note_data->sample->loop_start)
% note_data->sample->loop_size);
} else if (note_data->sample_pos >= note_data->sample->data_length) {
goto END_THIS_NOTE;
}
}
if (note_data->env_inc == 0) {
note_data = note_data->next;
continue;
}
note_data->env_level += note_data->env_inc;
if (note_data->env_inc < 0) {
if (note_data->env_level
> note_data->sample->env_target[note_data->env]) {
note_data = note_data->next;
continue;
}
} else if (note_data->env_inc > 0) {
if (note_data->env_level
< note_data->sample->env_target[note_data->env]) {
note_data = note_data->next;
continue;
}
}
// Yes could have a condition here but
// it would create another bottleneck
note_data->env_level =
note_data->sample->env_target[note_data->env];
switch (note_data->env) {
case 0:
if (!(note_data->modes & SAMPLE_ENVELOPE)) {
note_data->env_inc = 0;
note_data = note_data->next;
continue;
}
break;
case 2:
if (note_data->modes & SAMPLE_SUSTAIN) {
note_data->env_inc = 0;
note_data = note_data->next;
continue;
} else if (note_data->modes & SAMPLE_CLAMPED) {
note_data->env = 5;
if (note_data->env_level
> note_data->sample->env_target[5]) {
note_data->env_inc =
-note_data->sample->env_rate[5];
} else {
note_data->env_inc =
note_data->sample->env_rate[5];
}
continue;
}
break;
case 5:
if (note_data->env_level == 0) {
goto END_THIS_NOTE;
}
/* sample release */
if (note_data->modes & SAMPLE_LOOP)
note_data->modes ^= SAMPLE_LOOP;
note_data->env_inc = 0;
note_data = note_data->next;
continue;
case 6:
END_THIS_NOTE:
if (note_data->replay != NULL) {
note_data->active = 0;
{
struct _note *prev_note = NULL;
struct _note *nte_array = mdi->note;
if (nte_array != note_data) {
do {
prev_note = nte_array;
nte_array = nte_array->next;
} while (nte_array != note_data);
}
if (prev_note) {
prev_note->next = note_data->replay;
} else {
mdi->note = note_data->replay;
}
note_data->replay->next = note_data->next;
note_data = note_data->replay;
note_data->active = 1;
}
} else {
note_data->active = 0;
{
struct _note *prev_note = NULL;
struct _note *nte_array = mdi->note;
if (nte_array != note_data) {
do {
prev_note = nte_array;
nte_array = nte_array->next;
} while ((nte_array != note_data)
&& (nte_array));
}
if (prev_note) {
prev_note->next = note_data->next;
} else {
mdi->note = note_data->next;
}
note_data = note_data->next;
}
}
continue;
}
note_data->env++;
if (note_data->is_off == 1) {
do_note_off_extra(note_data);
}
if (note_data->env_level
> note_data->sample->env_target[note_data->env]) {
note_data->env_inc =
-note_data->sample->env_rate[note_data->env];
} else {
note_data->env_inc =
note_data->sample->env_rate[note_data->env];
}
note_data = note_data->next;
continue;
}
/*
* =========================
* mix the channels together
* =========================
*/
}
*buffer++ = left_mix;
*buffer++ = right_mix;
} while (--count);
return buffer;
}
int *WM_Mix(midi *handle, int *buffer, unsigned long count)
{
if (((struct _mdi *)handle)->info.mixer_options & WM_MO_ENHANCED_RESAMPLING)
{
return WM_Mix_Gauss(handle, buffer, count);
}
else
{
return WM_Mix_Linear(handle, buffer, count);
}
}
/*
* =========================
* External Functions
* =========================
*/
const char *WildMidi_GetString(unsigned short int info)
{
switch (info)
{
case WM_GS_VERSION:
return WM_Version;
}
return NULL;
}
midi * Renderer::NewMidi()
{
midi * ret = NULL;
ret = Init_MDI();
((_mdi*)ret)->reverb = _WM_init_reverb(instruments->GetSampleRate(), instruments->reverb_room_width,
instruments->reverb_room_length, instruments->reverb_listen_posx, instruments->reverb_listen_posy);
return ret;
}
int Renderer::SetOption(int options, int setting)
{
struct _mdi *mdi;
if (handle == NULL) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG, "(NULL handle)",
0);
return -1;
}
mdi = (struct _mdi *) handle;
if ((!(options & 0x0007)) || (options & 0xFFF8)) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG, "(invalid option)",
0);
return -1;
}
if (setting & 0xFFF8) {
_WM_ERROR(__FUNCTION__, __LINE__, WM_ERR_INVALID_ARG,
"(invalid setting)", 0);
return -1;
}
mdi->info.mixer_options = ((mdi->info.mixer_options & (0x00FF ^ options))
| (options & setting));
if (options & WM_MO_LOG_VOLUME) {
AdjustChannelVolumes(mdi, 16); // Settings greater than 15
// adjust all channels
} else if (options & WM_MO_REVERB) {
_WM_reset_reverb(mdi->reverb);
}
return 0;
}
Renderer::Renderer(Instruments *instr, unsigned mixOpt)
{
init_gauss();
instruments = instr;
WM_MixerOptions = mixOpt;
handle = NewMidi();
}
Renderer::~Renderer()
{
freeMDI((_mdi *)handle);
}
void Renderer::ShortEvent(int status, int parm1, int parm2)
{
_mdi *mdi = (_mdi *)handle;
_event_data ev;
ev.channel = status & 0x0F;
switch ((status & 0xF0) >> 4) // command
{
case 0x8:
ev.data = (parm1 << 8) | parm2;
do_note_off(mdi, &ev);
break;
case 0x9:
ev.data = (parm1 << 8) | parm2;
do_note_on(mdi, &ev);
break;
case 0xA:
ev.data = (parm1 << 8) | parm2;
do_aftertouch(mdi, &ev);
break;
case 0xC:
ev.data = parm1;
do_patch(mdi, &ev);
break;
case 0xD:
ev.data = parm1;
do_channel_pressure(mdi, &ev);
break;
case 0xE:
ev.data = parm1 | (parm2 << 7);
do_pitch(mdi, &ev);
break;
case 0xB: // Controllers
ev.data = parm2;
switch (parm1)
{
case 0: do_control_bank_select(mdi, &ev); break;
case 6: do_control_data_entry_course(mdi, &ev); break; // [sic]
case 7: do_control_channel_volume(mdi, &ev); break;
case 8: do_control_channel_balance(mdi, &ev); break;
case 10: do_control_channel_pan(mdi, &ev); break;
case 11: do_control_channel_expression(mdi, &ev); break;
case 38: do_control_data_entry_fine(mdi, &ev); break;
case 64: do_control_channel_hold(mdi, &ev); break;
case 96: do_control_data_increment(mdi, &ev); break;
case 97: do_control_data_decrement(mdi, &ev); break;
case 98: do_control_non_registered_param_fine(mdi, &ev); break;
case 99: do_control_non_registered_param_course(mdi, &ev); break; // [sic]
case 100: do_control_registered_param_fine(mdi, &ev); break;
case 101: do_control_registered_param_course(mdi, &ev); break; // [sic]
case 120: do_control_channel_sound_off(mdi, &ev); break;
case 121: do_control_channel_controllers_off(mdi, &ev); break;
case 123: do_control_channel_notes_off(mdi, &ev); break;
}
}
}
void Renderer::LongEvent(const unsigned char *data, int len)
{
// Check for Roland SysEx
if (len >= 11 && // Must be at least 11 bytes
data[len-1] == 0xF7 && // SysEx end
data[0] == 0xF0 && // SysEx
data[1] == 0x41 && // Roland
data[2] == 0x10 && // Device ID, defaults to 0x10
data[3] == 0x42 && // Model ID, 0x42 indicates a GS synth
data[4] == 0x12 && // The other end is sending data to us
data[5] == 0x40) // We only care about addresses with this first byte
{
// Calculate checksum
int cksum = 0;
for (int i = 5; i < len - 2; ++i)
{
cksum += data[i];
}
cksum = 128 - (cksum & 0x7F);
if (data[len-2] == cksum)
{ // Check destination address
if (((data[6] & 0xF0) == 0x10) && data[7] == 0x15)
{ // Roland drum track setting
unsigned char sysex_ch = data[6] & 0x0F;
if (sysex_ch == 0)
{
sysex_ch = 9;
}
else if (sysex_ch <= 9)
{
sysex_ch -= 1;
}
_event_data ev = { sysex_ch, data[8] };
do_sysex_roland_drum_track((_mdi *)handle, &ev);
}
else if (data[6] == 0x00 && data[7] == 0x7F && data[8] == 0x00)
{ // Roland GS reset
do_sysex_roland_reset((_mdi *)handle, NULL);
}
}
}
// For non-Roland Sysex messages */
else
{
const unsigned char gm_reset[] = { 0xf0, 0x7e, 0x7f, 0x09, 0x01, 0xf7 };
const unsigned char yamaha_reset[] = { 0xf0, 0x43, 0x10, 0x4c, 0x00, 0x00, 0x7e, 0x00, 0xf7};
if (len == 6 && memcmp(gm_reset, data, 6) == 0)
{
do_sysex_gm_reset((_mdi *)handle, NULL);
}
else if (len == 9 && memcmp(yamaha_reset, data, 9) == 0)
{
do_sysex_yamaha_reset((_mdi *)handle, NULL);
}
}
}
void Renderer::ComputeOutput(float *fbuffer, int len)
{
_mdi *mdi = (_mdi *)handle;
int *buffer = (int *)fbuffer;
int *newbuf = WM_Mix(handle, buffer, len);
// assert(newbuf - buffer == len);
if (mdi->info.mixer_options & WM_MO_REVERB) {
_WM_do_reverb(mdi->reverb, buffer, len * 2);
}
for (; buffer < newbuf; ++buffer)
{
*(float *)buffer = (float)*buffer * (1.3f / 32768.f); // boost the volume because Wildmidi is far more quiet than the other synths and therefore hard to balance.
}
}
void Renderer::LoadInstrument(int bank, int percussion, int instr)
{
instruments->load_patch((_mdi *)handle, (bank << 8) | instr | (percussion ? 0x80 : 0));
}
int Renderer::GetVoiceCount()
{
int count = 0;
for (_note *note_data = ((_mdi *)handle)->note; note_data != NULL; note_data = note_data->next)
{
count++;
}
return count;
}
void Renderer::SetMasterVolume(unsigned char master_volume)
{
WM_MasterVolume = lin_volume[std::min<unsigned char>(127, master_volume)];
}
}
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