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gzdoom/libraries/wildmidi/wildmidi_lib.cpp
Christoph Oelckers fe0a6b00ce - blocked the destructor in the sound font reader base class. 
If ZMusic is to act like an external library it may not call delete on external objects because there is no guarantee that they use the same allocator. Deletion must be done as a virtual function to ensure that the correct operator delete gets called, which, unlike the actual destructor is not virtual itself.
2020-01-01 16:11:39 +01:00

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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,
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1559568896, 1560470272, 1561372032, 1562273408, 1563176320, 1564079616,
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1570416896, 1571324416, 1572231424, 1573140096, 1574049152, 1574958976,
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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();
sfreader->close();
}
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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