/// <summary>
/// Initializes a new instance of the <see cref="Note"/> class.
/// </summary>
/// <param name="audioBuffer">The audioBuffer to fill<see cref="List{float}"/></param>
/// <param name="sampleRate">The sampleRate<see cref="int"/></param>
/// <param name="oscillator">The oscillator reference<see cref="Oscillator"/></param>
/// <param name="duration">The duration of the note<see cref="float"/></param>
/// <param name="volume">The volume of the note<see cref="byte"/></param>
/// <param name="waveform">The waveform of the note<see cref="byte"/></param>
/// <param name="pitch">The pitch of the note<see cref="byte"/></param>
/// <param name="pitchFrom">The pitch to start the note from<see cref="int"/></param>
/// <param name="fadeIn">The fadeIn length<see cref="float"/></param>
/// <param name="fadeOut">The fadeOut length<see cref="float"/></param>
/// <param name="vibrato">If it should have a vibrato effect<see cref="bool"/></param>
public Note(ref List <float> audioBuffer, int sampleRate, ref Oscillator oscillator, float duration, byte volume, byte waveform, byte pitch, int pitchFrom = -1, float fadeIn = 1, float fadeOut = 1, bool vibrato = false)
{
_audioBuffer = audioBuffer;
_duration = duration;
_sampleRate = sampleRate;
_fadeIn = fadeIn * duration / 100.0f;
_fadeOut = fadeOut * duration / 100.0f;
_timePassed = 0.0f;
_volume = 1;
isCustom = waveform > 7;
targetVolume = volume / 7.0f;
this.waveform = waveform;
this.pitch = pitch;
if (pitchFrom == -1)
{
_pitchFrom = pitch;
}
else
{
_pitchFrom = pitchFrom;
}
_oscillator = oscillator;
_vibrato = vibrato;
}
/// <summary>
/// Initializes a new instance of the <see cref="MusicPlayer"/> class.
/// </summary>
/// <param name="memory">The memory unit reference<see cref="MemoryUnit"/></param>
/// <param name="audioBuffer">The audioBuffer reference<see cref="List{float}"/></param>
/// <param name="sampleRate">The sampleRate for the music<see cref="int"/></param>
public MusicPlayer(ref MemoryUnit memory, ref List <float> audioBuffer, int sampleRate)
{
sfxs = new Sfx[4] {
null, null, null, null
};
isPlaying = false;
_ram = memory.ram;
_audioBuffer = audioBuffer;
_sampleRate = sampleRate;
_oscillator = new Oscillator(_sampleRate);
patternData = new PatternData[64];
for (int i = 0; i < patternData.Length; i += 1)
{
byte[] vals = { _ram[i * 4 + 0 + util.ADDR_SONG],
_ram[i * 4 + 1 + util.ADDR_SONG],
_ram[i * 4 + 2 + util.ADDR_SONG],
_ram[i * 4 + 3 + util.ADDR_SONG] };
if ((vals[0] & 0x80) == 0x80)
{
patternData[i].loopStart = true;
}
if ((vals[1] & 0x80) == 0x80)
{
patternData[i].loopEnd = true;
}
if ((vals[2] & 0x80) == 0x80)
{
patternData[i].shouldStop = true;
}
patternData[i].channels = new ChannelData[4];
for (int j = 0; j < 4; j += 1)
{
patternData[i].channels[j] = new ChannelData();
if ((vals[j] & 0b01000000) != 0)
{
patternData[i].channels[j].isSilent = true;
}
patternData[i].channels[j].sfxIndex = (byte)(vals[j] & 0b00111111);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Sfx"/> class.
/// </summary>
/// <param name="_sfxData">The _sfxData to use<see cref="byte[]"/></param>
/// <param name="_sfxIndex">The _sfxIndex that this sfx references to<see cref="int"/></param>
/// <param name="audioBuffer">The audioBuffer to fill with data<see cref="List{float}"/></param>
/// <param name="oscillator">The oscillator reference<see cref="Oscillator"/></param>
/// <param name="sampleRate">The sampleRate<see cref="int"/></param>
/// <param name="audioBufferIndex">The index to start filling the audio buffer<see cref="int"/></param>
public Sfx(byte[] _sfxData, int _sfxIndex, ref List <float> audioBuffer, ref Oscillator oscillator, int sampleRate, int audioBufferIndex = 0)
{
notes = new P8Note[32];
_audioBuffer = audioBuffer;
duration = _sfxData[65] / 120.0f;
startLoop = _sfxData[66];
endLoop = _sfxData[67];
_sampleRate = sampleRate;
sfxIndex = _sfxIndex;
_oscillator = oscillator;
Console.WriteLine($"header {_sfxData[64]} {_sfxData[65]} {_sfxData[66]} {_sfxData[67]}");
for (int i = 0; i < _sfxData.Length - 4; i += 2)
{
byte lo = _sfxData[i];
byte hi = _sfxData[i + 1];
notes[i / 2].pitch = (byte)(lo & 0b00111111);
notes[i / 2].waveform = (byte)(((lo & 0b11000000) >> 6) | ((hi & 0b1) << 2));
notes[i / 2].volume = (byte)((hi & 0b00001110) >> 1);
notes[i / 2].effect = (byte)((hi & 0b01110000) >> 4);
notes[i / 2].isCustom = (byte)((hi & 0b10000000) >> 7) == 1;
Console.WriteLine($"{i} {notes[i / 2].pitch} {notes[i / 2].waveform} {notes[i / 2].volume} {notes[i / 2].effect} {notes[i / 2].isCustom}");
}
oscillator = new Oscillator(sampleRate);
notesToPlay = new Queue <Note>();
this.audioBufferIndex = audioBufferIndex;
isActive = true;
_fadeIn = 0.05f / duration;
}
/// <summary>
/// play sfx n on channel (0..3) from note offset (0..31) for length notes
/// n -1 to stop sound on that channel
/// n -2 to release sound on that channel from looping
/// Any music playing on the channel will be halted
/// offset in number of notes(0..31)
/// channel -1 (default) to automatically choose a channel that is not being used
/// channel -2 to stop the sound from playing on any channel
/// </summary>
/// <param name="n">The sfx number<see cref="int"/></param>
/// <param name="channel">The channel to play the sfx in<see cref="int?"/></param>
/// <param name="offset">The offset note to start playing from<see cref="int?"/></param>
/// <param name="length">The length of the sfx to play<see cref="int?"/></param>
/// <returns>The <see cref="object"/></returns>
public object Sfx(int n, int?channel = -1, int?offset = 0, int?length = 32)
{
switch (n)
{
case -1:
if (channel == -1)
{
StopAllChannels();
break;
}
if (channel < 0 || channel >= channelCount)
{
break;
}
sfxChannels[channel.Value] = null;
break;
case -2:
if (channel.Value < 0 || channel.Value >= channelCount)
{
break;
}
if (sfxChannels[channel.Value] != null)
{
sfxChannels[channel.Value].loop = false;
}
break;
default:
// If sound is already playing, stop it.
int?index = FindSoundOnAChannel(n);
if (index != null)
{
sfxChannels[index.Value] = null;
}
if (channel == -1)
{
channel = FindAvailableChannel();
if (channel == null)
{
break;
}
}
if (channel == -2)
{
break;
}
byte[] _sfxData = new byte[68];
Buffer.BlockCopy(_memory.ram, util.ADDR_SFX + 68 * n, _sfxData, 0, 68);
Oscillator osc = new Oscillator(sampleRate);
sfxChannels[channel.Value] = new Sfx(_sfxData, n, ref audioBuffer, ref osc, sampleRate);
sfxChannels[channel.Value].currentNote = offset.Value;
sfxChannels[channel.Value].lastIndex = offset.Value + length.Value - 1;
sfxChannels[channel.Value].Start();
break;
}
return(null);
}
