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/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file bemidi.cpp Support for BeOS midi. */
#include "../stdafx.h"
#include "../openttd.h"
#include "bemidi.h"
#include "../base_media_base.h"
#include "midifile.hpp"
#include "../safeguards.h"
/** Factory for BeOS' midi player. */
static FMusicDriver_BeMidi iFMusicDriver_BeMidi;
const char *MusicDriver_BeMidi::Start(const StringList &parm)
{
return nullptr;
}
void MusicDriver_BeMidi::Stop()
{
this->StopSong();
}
void MusicDriver_BeMidi::PlaySong(const MusicSongInfo &song)
{
std::string filename = MidiFile::GetSMFFile(song);
this->Stop();
this->midi_synth_file = new BMidiSynthFile();
if (!filename.empty()) {
entry_ref midiRef;
get_ref_for_path(filename.c_str(), &midiRef);
if (this->midi_synth_file->LoadFile(&midiRef) == B_OK) {
this->midi_synth_file->SetVolume(this->current_volume);
this->midi_synth_file->Start();
this->just_started = true;
} else {
this->Stop();
}
}
}
void MusicDriver_BeMidi::StopSong()
{
/* Reusing BMidiSynthFile can cause stuck notes when switching
* tracks, just delete whole object entirely. */
delete this->midi_synth_file;
this->midi_synth_file = nullptr;
}
bool MusicDriver_BeMidi::IsSongPlaying()
{
if (this->midi_synth_file == nullptr) return false;
/* IsFinished() returns true for a moment after Start()
* but before it really starts playing, use just_started flag
* to prevent accidental track skipping. */
if (this->just_started) {
if (!this->midi_synth_file->IsFinished()) this->just_started = false;
return true;
}
return !this->midi_synth_file->IsFinished();
}
void MusicDriver_BeMidi::SetVolume(byte vol)
{
this->current_volume = vol / 128.0;
if (this->midi_synth_file != nullptr) this->midi_synth_file->SetVolume(this->current_volume);
}
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