mirror of https://github.com/OpenTTD/OpenTTD.git
77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD 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, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file bemidi.cpp Support for BeOS midi. */
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#include "../stdafx.h"
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#include "../openttd.h"
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#include "bemidi.h"
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#include "../base_media_base.h"
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#include "midifile.hpp"
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#include "../safeguards.h"
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/** Factory for BeOS' midi player. */
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static FMusicDriver_BeMidi iFMusicDriver_BeMidi;
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std::optional<std::string_view> MusicDriver_BeMidi::Start(const StringList &parm)
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{
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return std::nullopt;
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}
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void MusicDriver_BeMidi::Stop()
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{
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this->StopSong();
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}
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void MusicDriver_BeMidi::PlaySong(const MusicSongInfo &song)
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{
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std::string filename = MidiFile::GetSMFFile(song);
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this->Stop();
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this->midi_synth_file = new BMidiSynthFile();
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if (!filename.empty()) {
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entry_ref midiRef;
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get_ref_for_path(filename.c_str(), &midiRef);
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if (this->midi_synth_file->LoadFile(&midiRef) == B_OK) {
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this->midi_synth_file->SetVolume(this->current_volume);
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this->midi_synth_file->Start();
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this->just_started = true;
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} else {
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this->Stop();
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}
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}
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}
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void MusicDriver_BeMidi::StopSong()
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{
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/* Reusing BMidiSynthFile can cause stuck notes when switching
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* tracks, just delete whole object entirely. */
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delete this->midi_synth_file;
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this->midi_synth_file = nullptr;
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}
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bool MusicDriver_BeMidi::IsSongPlaying()
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{
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if (this->midi_synth_file == nullptr) return false;
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/* IsFinished() returns true for a moment after Start()
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* but before it really starts playing, use just_started flag
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* to prevent accidental track skipping. */
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if (this->just_started) {
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if (!this->midi_synth_file->IsFinished()) this->just_started = false;
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return true;
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}
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return !this->midi_synth_file->IsFinished();
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}
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void MusicDriver_BeMidi::SetVolume(uint8_t vol)
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{
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this->current_volume = vol / 128.0;
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if (this->midi_synth_file != nullptr) this->midi_synth_file->SetVolume(this->current_volume);
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}
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