336 lines
12 KiB
C#
336 lines
12 KiB
C#
|
using System;
|
|||
|
|
using System.IO;
|
|||
|
|
using UnityEngine;
|
|||
|
|
using System.Collections.Generic;
|
|||
|
|
#if UNITY_EDITOR
|
|||
|
|
using UnityEditor;
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
// Part of this script, basically the exporting math bits, were derived from Gregorio Zanon's script
|
|||
|
|
// http://forum.unity3d.com/threads/119295-Writing-AudioListener.GetOutputData-to-wav-problem?p=806734&viewfull=1#post806734
|
|||
|
|
// https://gist.github.com/darktable/2317063
|
|||
|
|
//
|
|||
|
|
// The rest is provided by S.F. Bay Studios, Inc (http://www.InfinityPBR.com).
|
|||
|
|
#if UNITY_EDITOR
|
|||
|
|
public class SFB_AudioClipArrayCombiner : MonoBehaviour {
|
|||
|
|
[ContextMenuItem("Export Combined Audio Clips", "SaveNow")]
|
|||
|
|
public string outputName;
|
|||
|
|
public AudioLayer[] audioLayers;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public bool displayInspector = false;
|
|||
|
|
|
|||
|
|
static float rescaleFactor = 32767; //to convert float to Int16
|
|||
|
|
|
|||
|
|
const int HEADER_SIZE = 44;
|
|||
|
|
|
|||
|
|
[System.Serializable]
|
|||
|
|
public class AudioLayer
|
|||
|
|
{
|
|||
|
|
public AudioClip[] clip;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public bool expanded = false;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public int clipNumber = 0;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public string name = "No Clips Added";
|
|||
|
|
public float volume = 1;
|
|||
|
|
public float delay;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public Int16[] samples;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public Byte[] bytes;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public int sampleCount;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public int delayCount;
|
|||
|
|
[HideInInspector]
|
|||
|
|
public int onClip = 0;
|
|||
|
|
|
|||
|
|
public void GetSamples(int clipNumber)
|
|||
|
|
{
|
|||
|
|
samples = GetSamplesFromClip(clip[clipNumber], volume);
|
|||
|
|
delayCount = (int)(delay * clip[clipNumber].frequency * clip[clipNumber].channels);
|
|||
|
|
sampleCount = delayCount + samples.Length;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public void NewLength(int newLength){
|
|||
|
|
AudioLayer[] newAudioLayers = new AudioLayer[newLength]; // Create a new array
|
|||
|
|
for (int i = 0; i < newLength; i++) { // For each of the new length
|
|||
|
|
if (i >= audioLayers.Length) // If we are beyond the length of the original
|
|||
|
|
break; // break the loop
|
|||
|
|
newAudioLayers [i] = audioLayers [i]; // Copy the old data
|
|||
|
|
}
|
|||
|
|
audioLayers = new AudioLayer[newLength]; // Resize the array
|
|||
|
|
audioLayers = newAudioLayers; // Copy the data
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public void SaveNow()
|
|||
|
|
{
|
|||
|
|
// Find total number of exports
|
|||
|
|
int totalExports = 1; // Start at 1...
|
|||
|
|
for(int n = 0; n < audioLayers.Length; n++)
|
|||
|
|
{
|
|||
|
|
totalExports *= audioLayers [n].clip.Length; // Multiply by the number of clips in each layer
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (totalExports > 0) {
|
|||
|
|
float progressPercent = 0.0f;
|
|||
|
|
int clipCount = 0;
|
|||
|
|
EditorUtility.DisplayProgressBar("Exporting Combined Audio Clips", "Clip " + clipCount + " of " + totalExports, progressPercent);
|
|||
|
|
string[] combinations; // Start an array of all combinations
|
|||
|
|
combinations = new string[totalExports]; // Set the number of entries to the number of exports
|
|||
|
|
|
|||
|
|
// Reset the onClip value for each layer
|
|||
|
|
for (int r = 0; r < audioLayers.Length; r++) {
|
|||
|
|
audioLayers [r].onClip = 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
for (int l = 0; l < audioLayers.Length; l++) { // For each layer...
|
|||
|
|
int exportsLeft = 1; // Start at 1...
|
|||
|
|
for (int i = l; i < audioLayers.Length; i++) { // For each layer left in the list (don't compute those we've already done)
|
|||
|
|
exportsLeft *= audioLayers [i].clip.Length; // Find out how many exports are left if it were just those layers
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
int entriesPerValue = exportsLeft / audioLayers [l].clip.Length; // Compute how many entires per value, if the total entries were exportsLeft
|
|||
|
|
int entryCount = 0; // Set entryCount to 0
|
|||
|
|
|
|||
|
|
for (int e = 0; e < combinations.Length; e++) { // For all combinations
|
|||
|
|
if (l != 0) // If this isn't the first layer
|
|||
|
|
combinations [e] = combinations [e] + ","; // Append a "," to the String
|
|||
|
|
combinations [e] = combinations [e] + audioLayers [l].onClip; // Append the "onClip" value to the string
|
|||
|
|
entryCount++; // increase entryCount
|
|||
|
|
if (entryCount >= entriesPerValue) { // if we've done all the entires for that "onClip" value...
|
|||
|
|
audioLayers [l].onClip++; // increase onClip by 1
|
|||
|
|
entryCount = 0; // Reset entryCount
|
|||
|
|
if (audioLayers [l].onClip >= audioLayers [l].clip.Length) // if we've also run out of clips for this layer
|
|||
|
|
audioLayers [l].onClip = 0; // Reset onClip count
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
int number = 0; // for the file name
|
|||
|
|
// For each combination, save a .wav file with those clip numbers.
|
|||
|
|
foreach (var combination in combinations) {
|
|||
|
|
clipCount++;
|
|||
|
|
//progressPercent = clipCount / totalExports * 1.0f;
|
|||
|
|
progressPercent = clipCount / (float)totalExports;
|
|||
|
|
//Debug.Log ("progressPercent: " + progressPercent);
|
|||
|
|
EditorUtility.DisplayProgressBar("Exporting Combined Audio Clips", "Clip " + clipCount + " of " + totalExports, progressPercent);
|
|||
|
|
string[] clipsAsString = combination.Split ("," [0]);
|
|||
|
|
SaveClip (outputName, number, clipsAsString, audioLayers);
|
|||
|
|
number++;
|
|||
|
|
}
|
|||
|
|
EditorUtility.ClearProgressBar();
|
|||
|
|
} else {
|
|||
|
|
Debug.Log ("Nothing To Export! (or maybe a layer is missing clips?)");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
public static bool SaveClip(string filename, int exportNumber, string[] clipsAsString, AudioLayer[] audioLayers)
|
|||
|
|
{
|
|||
|
|
//Debug.Log ("Doing Export " + exportNumber);
|
|||
|
|
if (filename.Length <= 0) // If the name hasn't been set
|
|||
|
|
filename = "CombinedAudio" + exportNumber; // Use a default name
|
|||
|
|
else { // else
|
|||
|
|
filename = filename + "_" + exportNumber; // Use the chosen name plus the number
|
|||
|
|
}
|
|||
|
|
filename += ".wav"; // add the .wav extension
|
|||
|
|
|
|||
|
|
var filepath = "Assets/SFBayStudios/Exported Audio Files/" + filename; // Set the file path
|
|||
|
|
|
|||
|
|
// Make sure directory exists if user is saving to sub dir.
|
|||
|
|
Directory.CreateDirectory(Path.GetDirectoryName(filepath));
|
|||
|
|
|
|||
|
|
using (var fileStream = CreateEmpty(filepath)) // Create an empty file
|
|||
|
|
{
|
|||
|
|
int sampleCount = ConvertAndWrite(fileStream, clipsAsString, audioLayers);
|
|||
|
|
|
|||
|
|
// ClIP NUMBER CHANGE HERE
|
|||
|
|
WriteHeader(fileStream, audioLayers[0].clip[0], sampleCount);
|
|||
|
|
}
|
|||
|
|
AssetDatabase.ImportAsset(filepath);
|
|||
|
|
return true; // TODO: return false if there's a failure saving the file
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static int ConvertAndWrite(FileStream fileStream, String[] clipsAsString, AudioLayer[] audioLayers)
|
|||
|
|
{
|
|||
|
|
int mostSamples = 0; // Set this to 0
|
|||
|
|
//Debug.Log("audioLayers Lenght: " + audioLayers.Length);
|
|||
|
|
for (int c = 0; c < audioLayers.Length; c++) { // For each Layer
|
|||
|
|
int clipNumber = int.Parse(clipsAsString[c]); // Get the clip number as an int
|
|||
|
|
audioLayers[c].GetSamples(clipNumber); // Run this function from the class
|
|||
|
|
mostSamples = Mathf.Max(mostSamples, audioLayers[c].sampleCount); // Set mostSamples to the greatest one
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
Int16[] finalSamples = new Int16[mostSamples]; // The exported clip will have the mostSamples
|
|||
|
|
float[] sampleValues = new float[mostSamples];
|
|||
|
|
|
|||
|
|
for(int i = 0; i < mostSamples; i++) // for each sample
|
|||
|
|
{
|
|||
|
|
float sampleValue = 0; // Set variable for exported clip
|
|||
|
|
int sampleCount = 0; // Set variable
|
|||
|
|
|
|||
|
|
foreach (var audioLayer in audioLayers) // For each layer....
|
|||
|
|
{
|
|||
|
|
if (i > audioLayer.delayCount && i < audioLayer.sampleCount) // if we are not in the delay range and we are under the samplecount for the clip
|
|||
|
|
{
|
|||
|
|
// Add the value from this layer to the final (sampleValue)
|
|||
|
|
sampleValue += (audioLayer.samples[i - audioLayer.delayCount] / rescaleFactor);
|
|||
|
|
sampleCount++;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
sampleValues [i] += sampleValue;
|
|||
|
|
|
|||
|
|
//if(sampleCount!=0) // If we have done some samples (keep from dividing by 0)
|
|||
|
|
// sampleValue /= sampleCount; // compute sampleValue
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
float highSample = 0.0f; // Variable for the highest sample
|
|||
|
|
float lowSample = 0.0f; // Variable for the lowest sample
|
|||
|
|
for (int h = 0; h < mostSamples; h++) { // For each sample...
|
|||
|
|
highSample = Mathf.Max (highSample, sampleValues [h]); // Compute the highest sample
|
|||
|
|
lowSample = Mathf.Min (lowSample, sampleValues [h]); // Compute the lowest sample
|
|||
|
|
}
|
|||
|
|
float parameter = Mathf.InverseLerp(0.0f, Mathf.Max(highSample, lowSample * -1), 1.0f); // Find the amount we need to multiply each sample by, based on the most extreme sample (high or low)
|
|||
|
|
|
|||
|
|
for (int p = 0; p < mostSamples; p++) { // For each sample...
|
|||
|
|
sampleValues [p] *= parameter; // Multiply the value by the parameter value // Adjust the volume
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
for (int i2 = 0; i2 < mostSamples; i2++) { // For each sample...
|
|||
|
|
finalSamples [i2] = (short)(sampleValues[i2] * rescaleFactor); // Finalize the value
|
|||
|
|
}
|
|||
|
|
sampleValues = new float[0]; // Clear this data
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
Byte[] bytesData = ConvertSamplesToBytes(finalSamples);
|
|||
|
|
fileStream.Write(bytesData, 0, bytesData.Length);
|
|||
|
|
|
|||
|
|
return mostSamples;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
static Byte[] ConvertSamplesToBytes(Int16[] samples)
|
|||
|
|
{
|
|||
|
|
Byte[] bytesData = new Byte[samples.Length * 2];
|
|||
|
|
for (int i = 0; i < samples.Length; i++)
|
|||
|
|
{
|
|||
|
|
Byte[] byteArr = new Byte[2];
|
|||
|
|
byteArr = BitConverter.GetBytes(samples[i]);
|
|||
|
|
byteArr.CopyTo(bytesData, i * 2);
|
|||
|
|
}
|
|||
|
|
return bytesData;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
static Int16[] GetSamplesFromClip(AudioClip clip, float volume = 1)
|
|||
|
|
{
|
|||
|
|
//Debug.Log ("Getting Samples from clip " + clip.name);
|
|||
|
|
var samples = new float[clip.samples * clip.channels];
|
|||
|
|
//Debug.Log ("Samples: " + samples.Length);
|
|||
|
|
|
|||
|
|
clip.GetData(samples, 0);
|
|||
|
|
|
|||
|
|
Int16[] intData = new Int16[samples.Length];
|
|||
|
|
|
|||
|
|
for (int i = 0; i < samples.Length; i++)
|
|||
|
|
{
|
|||
|
|
intData[i] = (short)(samples[i] * volume * rescaleFactor);
|
|||
|
|
}
|
|||
|
|
return intData;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
static void WriteHeader(FileStream fileStream, AudioClip clip, int sampleCount)
|
|||
|
|
{
|
|||
|
|
var frequency = clip.frequency;
|
|||
|
|
var channelCount = clip.channels;
|
|||
|
|
|
|||
|
|
fileStream.Seek(0, SeekOrigin.Begin);
|
|||
|
|
|
|||
|
|
Byte[] riff = System.Text.Encoding.UTF8.GetBytes("RIFF");
|
|||
|
|
fileStream.Write(riff, 0, 4);
|
|||
|
|
|
|||
|
|
Byte[] chunkSize = BitConverter.GetBytes(fileStream.Length - 8);
|
|||
|
|
fileStream.Write(chunkSize, 0, 4);
|
|||
|
|
|
|||
|
|
Byte[] wave = System.Text.Encoding.UTF8.GetBytes("WAVE");
|
|||
|
|
fileStream.Write(wave, 0, 4);
|
|||
|
|
|
|||
|
|
Byte[] fmt = System.Text.Encoding.UTF8.GetBytes("fmt ");
|
|||
|
|
fileStream.Write(fmt, 0, 4);
|
|||
|
|
|
|||
|
|
Byte[] subChunk1 = BitConverter.GetBytes(16);
|
|||
|
|
fileStream.Write(subChunk1, 0, 4);
|
|||
|
|
|
|||
|
|
//UInt16 two = 2;
|
|||
|
|
UInt16 one = 1;
|
|||
|
|
|
|||
|
|
Byte[] audioFormat = BitConverter.GetBytes(one);
|
|||
|
|
fileStream.Write(audioFormat, 0, 2);
|
|||
|
|
|
|||
|
|
Byte[] numChannels = BitConverter.GetBytes(channelCount);
|
|||
|
|
fileStream.Write(numChannels, 0, 2);
|
|||
|
|
|
|||
|
|
Byte[] sampleRate = BitConverter.GetBytes(frequency);
|
|||
|
|
fileStream.Write(sampleRate, 0, 4);
|
|||
|
|
|
|||
|
|
Byte[] byteRate = BitConverter.GetBytes(frequency * channelCount * 2); // sampleRate * bytesPerSample*number of channels, here 44100*2*2
|
|||
|
|
fileStream.Write(byteRate, 0, 4);
|
|||
|
|
|
|||
|
|
UInt16 blockAlign = (ushort)(channelCount * 2);
|
|||
|
|
fileStream.Write(BitConverter.GetBytes(blockAlign), 0, 2);
|
|||
|
|
|
|||
|
|
UInt16 bps = 16;
|
|||
|
|
Byte[] bitsPerSample = BitConverter.GetBytes(bps);
|
|||
|
|
fileStream.Write(bitsPerSample, 0, 2);
|
|||
|
|
|
|||
|
|
Byte[] datastring = System.Text.Encoding.UTF8.GetBytes("data");
|
|||
|
|
fileStream.Write(datastring, 0, 4);
|
|||
|
|
|
|||
|
|
//Byte[] subChunk2 = BitConverter.GetBytes(sampleCount * channelCount * 2);
|
|||
|
|
Byte[] subChunk2 = BitConverter.GetBytes(sampleCount * channelCount * 1);
|
|||
|
|
fileStream.Write(subChunk2, 0, 4);
|
|||
|
|
|
|||
|
|
// fileStream.Close();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static FileStream CreateEmpty(string filepath)
|
|||
|
|
{
|
|||
|
|
var fileStream = new FileStream(filepath, FileMode.Create);
|
|||
|
|
byte emptyByte = new byte();
|
|||
|
|
|
|||
|
|
for (int i = 0; i < HEADER_SIZE; i++) //preparing the header
|
|||
|
|
{
|
|||
|
|
fileStream.WriteByte(emptyByte);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return fileStream;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
#endif
|