/* Copyright (c) 2003-2004 Various contributors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #ifndef MT32EMU_TABLES_H #define MT32EMU_TABLES_H namespace MT32Emu { // Mathematical constants const double DOUBLE_PI = 3.1415926535897932384626433832795; const double DOUBLE_LN = 2.3025850929940456840179914546844; const float FLOAT_PI = 3.1415926535897932384626433832795f; const float FLOAT_LN = 2.3025850929940456840179914546844f; // Filter settings const int FILTERGRAN = 512; const int MIDDLEC = 60; const int MIDDLEA = 69; // By this I mean "A above middle C" //FIXME:KG: may only need to do 12 to 108 //12..108 is the range allowed by note on commands, but the key can be modified by pitch keyfollow //and adjustment for timbre pitch, so the results can be outside that range. Do move it (by octave) into // the 12..108 range, or keep it in 0..127 range, or something else altogether? const int LOWEST_NOTE = 12; const int HIGHEST_NOTE = 127; const int NUM_NOTES = HIGHEST_NOTE - LOWEST_NOTE + 1; // Number of slots for note LUT // Amplitude of waveform generator const int WGAMP = 7168; // 8192? class Synth; extern Bit16s smallnoise[MAX_SAMPLE_OUTPUT]; // Some optimization stuff extern Bit32s keytable[217]; extern Bit16s sintable[65536]; extern Bit32u lfotable[101]; extern Bit32s penvtable[16][101]; extern Bit32s filveltable[128][101]; extern Bit32s veltkeytable[5][128]; extern Bit32s pulsetable[101]; extern Bit32s ampbiastable[13][128]; extern Bit32s fbiastable[15][128]; extern float filtcoeff[FILTERGRAN][31][8]; extern Bit32s finetable[201]; extern Bit32u lfoptable[101][101]; extern Bit32s ampveltable[128][64]; extern Bit32s pwveltable[15][128]; extern Bit32s envtimetable[101]; extern Bit32s decaytimetable[101]; extern Bit32s lasttimetable[101]; extern Bit32s voltable[128]; extern float ResonInv[31]; struct NoteLookup { Bit32u div; Bit32u wavTable[128]; Bit32s sawTable[101]; Bit32s fildepTable[5]; Bit32s timekeyTable[5]; int filtTable[2][201]; int nfiltTable[101][101]; Bit16s *waveforms[3]; Bit32u waveformSize[3]; }; extern NoteLookup noteLookups[NUM_NOTES]; class TableInitialiser { static void initMT32ConstantTables(Synth *synth); static File *initWave(Synth *synth, NoteLookup *noteLookup, float ampsize, float div, File *file); static bool initNotes(Synth *synth, PCMWaveEntry pcmWaves[128], float rate, float tuning); public: static bool initMT32Tables(Synth *synth, PCMWaveEntry pcmWaves[128], float sampleRate, float masterTune); static File *initNote(Synth *synth, NoteLookup *noteLookup, float note, float rate, float tuning, PCMWaveEntry pcmWaves[128], File *file); static void freeNotes(); }; } #endif