diff options
Diffstat (limited to 'backends/midi/mt32/tables.h')
| -rw-r--r-- | backends/midi/mt32/tables.h | 64 |
1 files changed, 35 insertions, 29 deletions
diff --git a/backends/midi/mt32/tables.h b/backends/midi/mt32/tables.h index 1f4fdab8b2..3e73400edf 100644 --- a/backends/midi/mt32/tables.h +++ b/backends/midi/mt32/tables.h @@ -22,44 +22,50 @@ #ifndef MT32EMU_TABLES_H #define MT32EMU_TABLES_H +namespace MT32Emu { + // Mathematical constants -#ifndef PI -#define PI 3.1415926535897932384626433832795 -#endif -#ifndef LN -#define LN 2.30258509 -#endif +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 -#define FILTERGRAN 512 +const int FILTERGRAN = 512; -#define MIDDLEC 60 +const int MIDDLEC = 60; +const int MIDDLEA = 69; // By this I mean "A above middle C" -#define NUMNOTES 128 // MIDI supports 128 notes/keys +// Constant tuning for now. The manual claims "Standard pitch" is 442.0. +// I assume they mean this is the MT-32 default pitch, and not concert pitch, +// since the latter has been internationally defined as 440Hz for decades. +// FIXME:KG: Keeping it at 440.0f for now, as in original. Check with CC +const float TUNING = 440.0f; -// Amplitude of waveform generator -#define WGAMP (7168) -//#define WGAMP (8192) +const int NUM_NOTES = 128; // MIDI supports 128 notes/keys -namespace MT32Emu { +// Amplitude of waveform generator +const int WGAMP = 7168; // 8192? class Synth; +extern const Bit8s LoopPatterns[9][10]; + extern Bit16s smallnoise[MAX_SAMPLE_OUTPUT]; // Some optimization stuff extern Bit32s keytable[217]; -extern Bit32s divtable[NUMNOTES]; -extern Bit32s smalldivtable[NUMNOTES]; -extern Bit32u wavtabler[54][NUMNOTES]; -extern Bit32u looptabler[9][10][NUMNOTES]; +extern Bit32s divtable[NUM_NOTES]; +extern Bit32s smalldivtable[NUM_NOTES]; +extern Bit32u wavtabler[54][NUM_NOTES]; +extern Bit32u looptabler[9][10][NUM_NOTES]; 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 sawtable[NUMNOTES][101]; +extern Bit32s sawtable[NUM_NOTES][101]; extern Bit32s ampbiastable[13][128]; extern Bit32s fbiastable[15][128]; extern float filtcoeff[FILTERGRAN][31][8]; @@ -73,23 +79,23 @@ extern Bit32s lasttimetable[101]; extern Bit32s voltable[128]; extern float ResonInv[31]; -extern Bit16s freqtable[NUMNOTES]; -extern Bit32s fildeptable[5][NUMNOTES]; -extern Bit32s timekeytable[5][NUMNOTES]; -extern int filttable[2][NUMNOTES][201]; -extern int nfilttable[NUMNOTES][101][101]; +extern Bit16s freqtable[NUM_NOTES]; +extern Bit32s fildeptable[5][NUM_NOTES]; +extern Bit32s timekeytable[5][NUM_NOTES]; +extern int filttable[2][NUM_NOTES][201]; +extern int nfilttable[NUM_NOTES][101][101]; extern const Bit8s LoopPatterns[9][10]; -extern Bit16s *waveforms[4][NUMNOTES]; -extern Bit32u waveformsize[4][NUMNOTES]; +extern Bit16s *waveforms[4][NUM_NOTES]; +extern Bit32u waveformsize[4][NUM_NOTES]; class TableInitialiser { - void initMT32ConstantTables(Synth *synth); - void initWave(Synth *synth, File *file, bool reading, bool writing, int f, float freq, float rate, double ampsize, Bit32s div); - void initNotes(Synth *synth, sampleFormat pcms[54], float rate); + static void initMT32ConstantTables(Synth *synth); + static void initWave(Synth *synth, File *file, bool reading, bool writing, int f, float freq, float rate, double ampsize, Bit32s div); + static void initNotes(Synth *synth, PCMWave pcms[54], float rate); public: - void initMT32Tables(Synth *synth, sampleFormat pcms[54], float sampleRate); + static bool initMT32Tables(Synth *synth, PCMWave pcms[54], float sampleRate); }; } |