public unsafe static bool Save(Song song, string filename, int sampleRate, int bitRate, int loopCount, int duration, int channelMask)
{
if (sampleRate < 44100)
{
sampleRate = 44100;
Log.LogMessage(LogSeverity.Warning, $"Sample rate of {sampleRate}Hz is too low for MP3. Forcing 44100Hz.");
}
var project = song.Project;
var player = new WavPlayer(sampleRate, loopCount, channelMask);
var wavData = player.GetSongSamples(song, project.PalMode, duration);
var mp3Data = new byte[wavData.Length * sizeof(short) * 4];
var mp3Size = 0;
fixed(short *wavPtr = &wavData[0])
{
fixed(byte *mp3Ptr = &mp3Data[0])
{
mp3Size = ShineMp3Encode(sampleRate, 1, wavData.Length, new IntPtr(wavPtr), bitRate, mp3Data.Length, new IntPtr(mp3Ptr));
}
}
if (mp3Size <= 0)
{
return(false);
}
Array.Resize(ref mp3Data, mp3Size);
File.WriteAllBytes(filename, mp3Data);
return(true);
}
public unsafe static void Save(Song song, string filename, int sampleRate, int loopCount, int duration, int channelMask)
{
var project = song.Project;
var player = new WavPlayer(sampleRate, loopCount, channelMask);
var samples = player.GetSongSamples(song, project.PalMode, duration);
using (var file = new FileStream(filename, FileMode.Create))
{
var header = new WaveHeader();
// RIFF WAVE Header
header.chunkId[0] = (byte)'R';
header.chunkId[1] = (byte)'I';
header.chunkId[2] = (byte)'F';
header.chunkId[3] = (byte)'F';
header.format[0] = (byte)'W';
header.format[1] = (byte)'A';
header.format[2] = (byte)'V';
header.format[3] = (byte)'E';
// Format subchunk
header.subChunk1Id[0] = (byte)'f';
header.subChunk1Id[1] = (byte)'m';
header.subChunk1Id[2] = (byte)'t';
header.subChunk1Id[3] = (byte)' ';
header.audioFormat = 1; // FOR PCM
header.numChannels = 1; // 1 for MONO, 2 for stereo
header.sampleRate = sampleRate; // ie 44100 hertz, cd quality audio
header.bitsPerSample = 16; //
header.byteRate = header.sampleRate * header.numChannels * header.bitsPerSample / 8;
header.blockAlign = (short)(header.numChannels * header.bitsPerSample / 8);
// Data subchunk
header.subChunk2Id[0] = (byte)'d';
header.subChunk2Id[1] = (byte)'a';
header.subChunk2Id[2] = (byte)'t';
header.subChunk2Id[3] = (byte)'a';
// All sizes for later:
// chuckSize = 4 + (8 + subChunk1Size) + (8 + subChubk2Size)
// subChunk1Size is constanst, i'm using 16 and staying with PCM
// subChunk2Size = nSamples * nChannels * bitsPerSample/8
// Whenever a sample is added:
// chunkSize += (nChannels * bitsPerSample/8)
// subChunk2Size += (nChannels * bitsPerSample/8)
header.subChunk1Size = 16;
header.subChunk2Size = samples.Length * sizeof(short);
header.chunkSize = 4 + (8 + header.subChunk1Size) + (8 + header.subChunk2Size);
var headerBytes = new byte[sizeof(WaveHeader)];
Marshal.Copy(new IntPtr(&header), headerBytes, 0, headerBytes.Length);
file.Write(headerBytes, 0, headerBytes.Length);
// So lame.
foreach (var s in samples)
{
file.Write(BitConverter.GetBytes(s), 0, sizeof(short));
}
}
}
public unsafe static void Save(Song song, string filename, int sampleRate, int loopCount, int duration, int channelMask)
{
var project = song.Project;
var player = new WavPlayer(sampleRate, loopCount, channelMask);
var samples = player.GetSongSamples(song, project.PalMode, duration);
Save(samples, filename, sampleRate);
}
public unsafe static void Save(Song song, string filename, int sampleRate, int loopCount, int duration, int channelMask, bool separateFiles, bool separateIntro, Action <short[], string> function)
{
var project = song.Project;
var introDuration = separateIntro ? GetIntroDuration(song, sampleRate) : 0;
if (separateFiles)
{
for (int channelIdx = 0; channelIdx < song.Channels.Length; channelIdx++)
{
var channelBit = 1 << channelIdx;
if ((channelBit & channelMask) != 0)
{
var player = new WavPlayer(sampleRate, loopCount, channelBit);
var samples = player.GetSongSamples(song, project.PalMode, duration);
if (introDuration > 0)
{
var loopSamples = new short[samples.Length - introDuration];
Array.Copy(samples, introDuration, loopSamples, 0, loopSamples.Length);
Array.Resize(ref samples, introDuration);
var channelIntroFileName = Utils.AddFileSuffix(filename, "_" + song.Channels[channelIdx].ShortName + "_Intro");
var channelLoopFileName = Utils.AddFileSuffix(filename, "_" + song.Channels[channelIdx].ShortName);
function(samples, channelIntroFileName);
function(loopSamples, channelLoopFileName);
}
else
{
var channelFileName = Utils.AddFileSuffix(filename, "_" + song.Channels[channelIdx].ShortName);
function(samples, channelFileName);
}
}
}
}
else
{
var player = new WavPlayer(sampleRate, loopCount, channelMask);
var samples = player.GetSongSamples(song, project.PalMode, duration);
if (introDuration > 0)
{
var loopSamples = new short[samples.Length - introDuration];
Array.Copy(samples, introDuration, loopSamples, 0, loopSamples.Length);
Array.Resize(ref samples, introDuration);
var introFileName = Utils.AddFileSuffix(filename, "_Intro");
var loopFileName = filename;
function(samples, introFileName);
function(loopSamples, loopFileName);
}
else
{
function(samples, filename);
}
}
}
public static int GetIntroDuration(Song song, int sampleRate)
{
if (song.LoopPoint > 0)
{
// Create a shorter version of the song.
var songIndex = song.Project.Songs.IndexOf(song);
var clonedProject = song.Project.DeepClone();
var clonedSong = clonedProject.Songs[songIndex];
clonedSong.SetLength(song.LoopPoint);
var player = new WavPlayer(sampleRate, 1, 0x7fffffff);
var samples = player.GetSongSamples(clonedSong, song.Project.PalMode, -1);
return(samples.Length);
}
else
{
return(0);
}
}
public unsafe static void Save(Song song, string filename, int sampleRate, int loopCount, int duration, int channelMask, bool separateFiles, bool separateIntro, bool stereo, float[] pan, Action <short[], int, string> function)
{
var project = song.Project;
var introDuration = separateIntro ? GetIntroDuration(song, sampleRate) : 0;
if (channelMask == 0)
{
return;
}
if (separateFiles)
{
for (int channelIdx = 0; channelIdx < song.Channels.Length; channelIdx++)
{
var channelBit = 1 << channelIdx;
if ((channelBit & channelMask) != 0)
{
var player = new WavPlayer(sampleRate, loopCount, channelBit, Settings.SeparateChannelsExportTndMode);
var samples = player.GetSongSamples(song, project.PalMode, duration);
if (introDuration > 0)
{
var loopSamples = new short[samples.Length - introDuration];
Array.Copy(samples, introDuration, loopSamples, 0, loopSamples.Length);
Array.Resize(ref samples, introDuration);
var channelIntroFileName = Utils.AddFileSuffix(filename, "_" + song.Channels[channelIdx].ShortName + "_Intro");
var channelLoopFileName = Utils.AddFileSuffix(filename, "_" + song.Channels[channelIdx].ShortName);
function(samples, 1, channelIntroFileName);
function(loopSamples, 1, channelLoopFileName);
}
else
{
var channelFileName = Utils.AddFileSuffix(filename, "_" + song.Channels[channelIdx].ShortName);
function(samples, 1, channelFileName);
}
}
}
}
else
{
var numChannels = 1;
var samples = (short[])null;
if (stereo)
{
// Get all the samples for all channels.
var channelSamples = new short[song.Channels.Length][];
var numStereoSamples = 0;
for (int channelIdx = 0; channelIdx < song.Channels.Length; channelIdx++)
{
var channelBit = 1 << channelIdx;
if ((channelBit & channelMask) != 0)
{
var player = new WavPlayer(sampleRate, loopCount, channelBit, NesApu.TND_MODE_SEPARATE);
channelSamples[channelIdx] = player.GetSongSamples(song, project.PalMode, duration);
numStereoSamples = Math.Max(numStereoSamples, channelSamples[channelIdx].Length);
}
}
// Mix and interleave samples.
samples = new short[numStereoSamples * 2];
for (int i = 0; i < numStereoSamples; i++)
{
float l = 0;
float r = 0;
for (int j = 0; j < channelSamples.Length; j++)
{
if (channelSamples[j] != null)
{
float sl = 1.0f - Utils.Clamp(2.0f * (pan[j] - 0.5f), 0.0f, 1.0f);
float sr = 1.0f - Utils.Clamp(-2.0f * (pan[j] - 0.5f), 0.0f, 1.0f);
l += channelSamples[j][i] * sl;
r += channelSamples[j][i] * sr;
}
}
samples[i * 2 + 0] = (short)Utils.Clamp((int)Math.Round(l), short.MinValue, short.MaxValue);
samples[i * 2 + 1] = (short)Utils.Clamp((int)Math.Round(r), short.MinValue, short.MaxValue);
}
numChannels = 2;
introDuration *= 2;
}
else
{
var player = new WavPlayer(sampleRate, loopCount, channelMask);
samples = player.GetSongSamples(song, project.PalMode, duration);
}
if (introDuration > 0)
{
var loopSamples = new short[samples.Length - introDuration];
Array.Copy(samples, introDuration, loopSamples, 0, loopSamples.Length);
Array.Resize(ref samples, introDuration);
var introFileName = Utils.AddFileSuffix(filename, "_Intro");
var loopFileName = filename;
function(samples, numChannels, introFileName);
function(loopSamples, numChannels, loopFileName);
}
else
{
function(samples, numChannels, filename);
}
}
}