1 files changed, 101 insertions, 0 deletions
diff --git a/sound/softsynth/mt32/tables.h b/sound/softsynth/mt32/tables.h
new file mode 100644
index 0000000000..0c85796f4f
--- /dev/null
+++ b/sound/softsynth/mt32/tables.h
@@ -0,0 +1,101 @@
+/* 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