1 /*
2 * libADLMIDI is a free Software MIDI synthesizer library with OPL3 emulation
3 *
4 * Original ADLMIDI code: Copyright (c) 2010-2014 Joel Yliluoma <bisqwit@iki.fi>
5 * ADLMIDI Library API: Copyright (c) 2015-2020 Vitaly Novichkov <admin@wohlnet.ru>
6 *
7 * Library is based on the ADLMIDI, a MIDI player for Linux and Windows with OPL3 emulation:
8 * http://iki.fi/bisqwit/source/adlmidi.html
9 *
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "adlmidi_midiplay.hpp"
25 #include "adlmidi_opl3.hpp"
26 #include "adlmidi_private.hpp"
27 #include "wopl/wopl_file.h"
28
29
30 std::string ADLMIDI_ErrorString;
31
32 // Generator callback on audio rate ticks
33
34 #if defined(ADLMIDI_AUDIO_TICK_HANDLER)
adl_audioTickHandler(void * instance,uint32_t chipId,uint32_t rate)35 void adl_audioTickHandler(void *instance, uint32_t chipId, uint32_t rate)
36 {
37 reinterpret_cast<MIDIplay *>(instance)->AudioTick(chipId, rate);
38 }
39 #endif
40
adlCalculateFourOpChannels(MIDIplay * play,bool silent)41 int adlCalculateFourOpChannels(MIDIplay *play, bool silent)
42 {
43 Synth &synth = *play->m_synth;
44 size_t n_fourop[2] = {0, 0}, n_total[2] = {0, 0};
45 bool rhythmModeNeeded = false;
46 size_t numFourOps = 0;
47
48 //Automatically calculate how much 4-operator channels is necessary
49 {
50 //For custom bank
51 Synth::BankMap::iterator it = synth.m_insBanks.begin();
52 Synth::BankMap::iterator end = synth.m_insBanks.end();
53 for(; it != end; ++it)
54 {
55 size_t bank = it->first;
56 size_t div = (bank & Synth::PercussionTag) ? 1 : 0;
57 for(size_t i = 0; i < 128; ++i)
58 {
59 OplInstMeta &ins = it->second.ins[i];
60 if(ins.flags & OplInstMeta::Flag_NoSound)
61 continue;
62 if((ins.flags & OplInstMeta::Flag_Real4op) != 0)
63 ++n_fourop[div];
64 ++n_total[div];
65 if(div && ((ins.flags & OplInstMeta::Mask_RhythmMode) != 0))
66 rhythmModeNeeded = true;
67 }
68 }
69 }
70
71 // All 2ops (no 4ops)
72 if((n_fourop[0] == 0) && (n_fourop[1] == 0))
73 numFourOps = 0;
74 // All 2op melodics and Some (or All) 4op drums
75 else if((n_fourop[0] == 0) && (n_fourop[1] > 0))
76 numFourOps = 2;
77 // Many 4op melodics
78 else if((n_fourop[0] >= (n_total[0] * 7) / 8))
79 numFourOps = 6;
80 // Few 4op melodics
81 else if(n_fourop[0] > 0)
82 numFourOps = 4;
83
84 synth.m_numFourOps = static_cast<unsigned>(numFourOps * synth.m_numChips);
85
86 // Update channel categories and set up four-operator channels
87 if(!silent)
88 synth.updateChannelCategories();
89
90 // Set rhythm mode when it needed
91 synth.m_rhythmMode = rhythmModeNeeded;
92
93 return 0;
94 }
95
96 #ifndef DISABLE_EMBEDDED_BANKS
adlFromInstrument(const BanksDump::InstrumentEntry & instIn,OplInstMeta & instOut)97 void adlFromInstrument(const BanksDump::InstrumentEntry &instIn, OplInstMeta &instOut)
98 {
99 instOut.voice2_fine_tune = 0.0;
100 if(instIn.secondVoiceDetune != 0)
101 instOut.voice2_fine_tune = (double)((((int)instIn.secondVoiceDetune + 128) >> 1) - 64) / 32.0;
102
103 instOut.midiVelocityOffset = instIn.midiVelocityOffset;
104 instOut.drumTone = instIn.percussionKeyNumber;
105 instOut.flags = (instIn.instFlags & WOPL_Ins_4op) && (instIn.instFlags & WOPL_Ins_Pseudo4op) ? OplInstMeta::Flag_Pseudo4op : 0;
106 instOut.flags|= (instIn.instFlags & WOPL_Ins_4op) && ((instIn.instFlags & WOPL_Ins_Pseudo4op) == 0) ? OplInstMeta::Flag_Real4op : 0;
107 instOut.flags|= (instIn.instFlags & WOPL_Ins_IsBlank) ? OplInstMeta::Flag_NoSound : 0;
108 instOut.flags|= instIn.instFlags & WOPL_RhythmModeMask;
109
110 for(size_t op = 0; op < 2; op++)
111 {
112 if((instIn.ops[(op * 2) + 0] < 0) || (instIn.ops[(op * 2) + 1] < 0))
113 break;
114 const BanksDump::Operator &op1 = g_embeddedBanksOperators[instIn.ops[(op * 2) + 0]];
115 const BanksDump::Operator &op2 = g_embeddedBanksOperators[instIn.ops[(op * 2) + 1]];
116 instOut.op[op].modulator_E862 = op1.d_E862;
117 instOut.op[op].modulator_40 = op1.d_40;
118 instOut.op[op].carrier_E862 = op2.d_E862;
119 instOut.op[op].carrier_40 = op2.d_40;
120 instOut.op[op].feedconn = (instIn.fbConn >> (op * 8)) & 0xFF;
121 instOut.op[op].noteOffset = static_cast<int8_t>(op == 0 ? instIn.noteOffset1 : instIn.noteOffset2);
122 }
123
124 instOut.soundKeyOnMs = instIn.delay_on_ms;
125 instOut.soundKeyOffMs = instIn.delay_off_ms;
126 }
127 #endif
128