add unit test to check internal instrument conversions

1 files changed, 122 insertions, 0 deletions

diff --git a/src/adlmidi_cvt.hpp b/src/adlmidi_cvt.hpp
new file mode 100644
index 0000000..e28b6cc
--- /dev/null
+++ b/src/adlmidi_cvt.hpp
@@ -0,0 +1,122 @@
+/*
+ * libADLMIDI is a free MIDI to WAV conversion library with OPL3 emulation
+ *
+ * Original ADLMIDI code: Copyright (c) 2010-2014 Joel Yliluoma <bisqwit@iki.fi>
+ * ADLMIDI Library API:   Copyright (c) 2015-2018 Vitaly Novichkov <admin@wohlnet.ru>
+ *
+ * Library is based on the ADLMIDI, a MIDI player for Linux and Windows with OPL3 emulation:
+ * http://iki.fi/bisqwit/source/adlmidi.html
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "adldata.hh"
+#include "wopl/wopl_file.h"
+#include <cmath>
+
+template <class WOPLI>
+static void cvt_generic_to_FMIns(adlinsdata2 &ins, const WOPLI &in)
+{
+    ins.voice2_fine_tune = 0.0;
+    int8_t voice2_fine_tune = in.second_voice_detune;
+    if(voice2_fine_tune != 0)
+    {
+        if(voice2_fine_tune == 1)
+            ins.voice2_fine_tune = 0.000025;
+        else if(voice2_fine_tune == -1)
+            ins.voice2_fine_tune = -0.000025;
+        else
+            ins.voice2_fine_tune = voice2_fine_tune * (15.625 / 1000.0);
+    }
+
+    ins.tone = in.percussion_key_number;
+    ins.flags = (in.inst_flags & WOPL_Ins_4op) && (in.inst_flags & WOPL_Ins_Pseudo4op) ? adlinsdata::Flag_Pseudo4op : 0;
+    ins.flags|= (in.inst_flags & WOPL_Ins_4op) && ((in.inst_flags & WOPL_Ins_Pseudo4op) == 0) ? adlinsdata::Flag_Real4op : 0;
+    ins.flags|= (in.inst_flags & WOPL_Ins_IsBlank) ? adlinsdata::Flag_NoSound : 0;
+    ins.flags|= in.inst_flags & WOPL_RhythmModeMask;
+
+    for(size_t op = 0, slt = 0; op < 4; op++, slt++)
+    {
+        ins.adl[slt].carrier_E862 =
+            ((static_cast<uint32_t>(in.operators[op].waveform_E0) << 24) & 0xFF000000) //WaveForm
+            | ((static_cast<uint32_t>(in.operators[op].susrel_80) << 16) & 0x00FF0000) //SusRel
+            | ((static_cast<uint32_t>(in.operators[op].atdec_60) << 8) & 0x0000FF00)   //AtDec
+            | ((static_cast<uint32_t>(in.operators[op].avekf_20) << 0) & 0x000000FF);  //AVEKM
+        ins.adl[slt].carrier_40 = in.operators[op].ksl_l_40;//KSLL
+
+        op++;
+        ins.adl[slt].modulator_E862 =
+            ((static_cast<uint32_t>(in.operators[op].waveform_E0) << 24) & 0xFF000000) //WaveForm
+            | ((static_cast<uint32_t>(in.operators[op].susrel_80) << 16) & 0x00FF0000) //SusRel
+            | ((static_cast<uint32_t>(in.operators[op].atdec_60) << 8) & 0x0000FF00)   //AtDec
+            | ((static_cast<uint32_t>(in.operators[op].avekf_20) << 0) & 0x000000FF);  //AVEKM
+        ins.adl[slt].modulator_40 = in.operators[op].ksl_l_40;//KSLL
+    }
+
+    ins.adl[0].finetune = static_cast<int8_t>(in.note_offset1);
+    ins.adl[0].feedconn = in.fb_conn1_C0;
+    ins.adl[1].finetune = static_cast<int8_t>(in.note_offset2);
+    ins.adl[1].feedconn = in.fb_conn2_C0;
+
+    ins.ms_sound_kon  = in.delay_on_ms;
+    ins.ms_sound_koff = in.delay_off_ms;
+}
+
+template <class WOPLI>
+static void cvt_FMIns_to_generic(WOPLI &ins, const adlinsdata2 &in)
+{
+    ins.second_voice_detune = 0;
+    double voice2_fine_tune = in.voice2_fine_tune;
+    if(voice2_fine_tune != 0)
+    {
+        if(voice2_fine_tune > 0 && voice2_fine_tune <= 0.000025)
+            ins.second_voice_detune = 1;
+        else if(voice2_fine_tune < 0 && voice2_fine_tune >= -0.000025)
+            ins.second_voice_detune = -1;
+        else
+        {
+            long value = static_cast<long>(std::round(voice2_fine_tune * (1000.0 / 15.625)));
+            value = (value < -128) ? -128 : value;
+            value = (value > +127) ? +127 : value;
+            ins.second_voice_detune = static_cast<int8_t>(value);
+        }
+    }
+
+    ins.percussion_key_number = in.tone;
+    ins.inst_flags = (in.flags & (adlinsdata::Flag_Pseudo4op|adlinsdata::Flag_Real4op)) ? WOPL_Ins_4op : 0;
+    ins.inst_flags|= (in.flags & adlinsdata::Flag_Pseudo4op) ? WOPL_Ins_Pseudo4op : 0;
+    ins.inst_flags|= (in.flags & adlinsdata::Flag_NoSound) ? WOPL_Ins_IsBlank : 0;
+    ins.inst_flags |= in.flags & adlinsdata::Mask_RhythmMode;
+
+    for(size_t op = 0; op < 4; op++)
+    {
+        const adldata &in2op = in.adl[(op < 2) ? 0 : 1];
+        uint32_t regE862 = ((op & 1) == 0) ? in2op.carrier_E862 : in2op.modulator_E862;
+        uint8_t reg40 = ((op & 1) == 0) ? in2op.carrier_40 : in2op.modulator_40;
+
+        ins.operators[op].waveform_E0 = static_cast<uint8_t>(regE862 >> 24);
+        ins.operators[op].susrel_80 = static_cast<uint8_t>(regE862 >> 16);
+        ins.operators[op].atdec_60 = static_cast<uint8_t>(regE862 >> 8);
+        ins.operators[op].avekf_20 = static_cast<uint8_t>(regE862 >> 0);
+        ins.operators[op].ksl_l_40 = reg40;
+    }
+
+    ins.note_offset1 = in.adl[0].finetune;
+    ins.fb_conn1_C0 = in.adl[0].feedconn;
+    ins.note_offset2 = in.adl[1].finetune;
+    ins.fb_conn2_C0 = in.adl[1].feedconn;
+
+    ins.delay_on_ms = in.ms_sound_kon;
+    ins.delay_off_ms = in.ms_sound_koff;
+}