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135 lines
3 KiB
C++
135 lines
3 KiB
C++
// Copyright: 2021 - 2022, Ziemas
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// SPDX-License-Identifier: ISC
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#pragma once
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#include <exception>
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#include <list>
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#include <memory>
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#include <optional>
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#include <string>
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#include <utility>
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#include "ame_handler.h"
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#include "musicbank.h"
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#include "sound_handler.h"
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#include "vagvoice.h"
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#include "common/common_types.h"
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namespace snd {
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class midi_voice : public VagVoice {
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public:
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midi_voice(Tone& t, MusicBank::Prog& _prog) : VagVoice(t), prog(_prog) {}
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u8 note{0};
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u8 channel{0};
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u8 velocity{0};
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MusicBank::Prog& prog;
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};
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class AmeHandler;
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class MidiHandler : public SoundHandler {
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public:
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MidiHandler(Midi* block,
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VoiceManager& vm,
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MusicBank::MIDISound& sound,
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s32 vol,
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s32 pan,
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SoundBank& bank);
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MidiHandler(Midi* block,
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VoiceManager& vm,
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MusicBank::MIDISound& sound,
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s32 vol,
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s32 pan,
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SoundBank& bank,
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std::optional<AmeHandler*> parent);
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~MidiHandler() override {
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for (auto& p : m_voices) {
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auto v = p.lock();
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if (v != nullptr) {
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v->Stop();
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}
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}
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}
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void InitMidi();
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void Start();
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bool Tick() override;
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void MuteChannel(u8 channel);
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void UnmuteChannel(u8 channel);
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SoundBank& Bank() override { return m_bank; };
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void Pause() override;
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void Stop() override;
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void Unpause() override;
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u8 Group() override { return m_sound.VolGroup; }
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void SetVolPan(s32 vol, s32 pan) override;
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bool Complete() { return m_track_complete; };
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void SetPMod(s32 mod) override;
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private:
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static constexpr int tickrate = 240;
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static constexpr int mics_per_tick = 1000000 / tickrate;
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struct MidiError : public std::exception {
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MidiError(std::string text) : msg(std::move(text)) {}
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MidiError() : msg("Unknown MIDI error") {}
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std::string msg;
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const char* what() const noexcept override { return msg.c_str(); }
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};
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std::optional<AmeHandler*> m_parent;
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std::list<std::weak_ptr<midi_voice>> m_voices;
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MusicBank::MIDISound& m_sound;
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s32 m_vol{0x7f};
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s32 m_pan{0};
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s32 m_cur_pm{0};
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s8 m_repeats{0};
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SoundBank& m_bank;
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bool m_paused{false};
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Midi* m_header{nullptr};
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std::array<bool, 16> m_mute_state{};
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std::array<s8, 16> m_chanvol{};
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std::array<s16, 16> m_chanpan{};
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std::array<s16, 16> m_pitch_bend{};
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u8* m_sample_data{nullptr};
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u8* m_seq_data_start{nullptr};
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u8* m_seq_ptr{nullptr};
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u8 m_status{0};
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u32 m_tempo{500000};
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u32 m_ppq{480};
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u32 m_time{0};
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s32 m_tickerror{0};
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s32 m_tickdelta{0};
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s32 m_ppt{0};
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u64 m_tick_countdown{0};
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bool m_get_delta{true};
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bool m_track_complete{false};
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u32 m_muted_channels{0};
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std::array<u8, 16> m_programs{};
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VoiceManager& m_vm;
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void Step();
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void NewDelta();
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void NoteOn();
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void NoteOff();
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void ControllerChange();
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void ChannelPressure();
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void ProgramChange();
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void MetaEvent();
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void SystemEvent();
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void ChannelPitch();
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static std::pair<size_t, u32> ReadVLQ(u8* value);
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};
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} // namespace snd
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