/**
* Creates a channel name with a program
*
* @param Song $song
* @param Channel $channel
* @return string a new channel name
*/
protected function createChannelNameFromProgram(Song $song, $channel)
{
$names = ChannelNames::$defaultNames;
if ($channel->getProgram() >= 0 && isset($names[$channel->getProgram()])) {
return $this->createChannelName($song, $names[$channel->getProgram()]);
}
return $this->createDefaultChannelName($song);
}
/**
* Reads channels informations
*
* @return array $channels
*/
public function readChannels()
{
$channels = array();
for ($i = 0; $i < 64; $i++) {
$channel = new Channel();
$channel->setProgram($this->reader->readInt());
$channel->setVolume($this->toChannelShort($this->reader->readByte()));
$channel->setBalance($this->toChannelShort($this->reader->readByte()));
$channel->setChorus($this->toChannelShort($this->reader->readByte()));
$channel->setReverb($this->toChannelShort($this->reader->readByte()));
$channel->setPhaser($this->toChannelShort($this->reader->readByte()));
$channel->setTremolo($this->toChannelShort($this->reader->readByte()));
$channel->setBank($i == 9 ? Channel::DEFAULT_PERCUSSION_BANK : Channel::DEFAULT_BANK);
if ($channel->getProgram() < 0) {
$channel->setProgram(0);
}
$channels[] = $channel;
$this->reader->skip(2);
}
return $channels;
}
private function makeChannel(MidiSequenceHelper $sHelper, Channel $channel, $track)
{
if (($this->flags & MidiWriter::ADD_MIXER_MESSAGES) != 0) {
$channelId = $channel->getChannelId();
$tick = $this->getTick(Duration::QUARTER_TIME);
$sHelper->getSequence()->addControlChange($tick, $track, $channelId, MidiWriter::VOLUME, $this->fix($channel->getVolume()));
$sHelper->getSequence()->addControlChange($tick, $track, $channelId, MidiWriter::BALANCE, $this->fix($channel->getBalance()));
$sHelper->getSequence()->addControlChange($tick, $track, $channelId, MidiWriter::CHORUS, $this->fix($channel->getChorus()));
$sHelper->getSequence()->addControlChange($tick, $track, $channelId, MidiWriter::REVERB, $this->fix($channel->getReverb()));
$sHelper->getSequence()->addControlChange($tick, $track, $channelId, MidiWriter::PHASER, $this->fix($channel->getPhaser()));
$sHelper->getSequence()->addControlChange($tick, $track, $channelId, MidiWriter::TREMOLO, $this->fix($channel->getTremolo()));
$sHelper->getSequence()->addControlChange($tick, $track, $channelId, MidiWriter::EXPRESSION, 127);
if (!$channel->isPercussionChannel()) {
$sHelper->getSequence()->addControlChange($tick, $track, $channelId, MidiWriter::BANK_SELECT, $this->fix($channel->getBank()));
}
$sHelper->getSequence()->addProgramChange($tick, $track, $channelId, $this->fix($channel->getProgram()));
}
}
