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Add Sync Between AudioSource and SoundEvent

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copecone committed 2026-07-09 01:44:59 +09:00
1 parent af8bb439f5
commit 1e7dcd508a
7 files changed
+213 -110
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Util/Audio/AudioResampler.cs
+101
View File
@@ -0,0 +1,101 @@
using System;
namespace ADOFAIRenderer.Util.Audio
{
public static class AudioResampler
{
public static float[] Resample(float[] inputSamples, int inputChannels, int inputFrequency, int targetChannels, int targetFrequency)
{
// ── Safety Validation ──
if (inputSamples.Length == 0 ||
inputChannels <= 0 || targetChannels <= 0 ||
inputFrequency <= 0 || targetFrequency <= 0)
{
return Array.Empty<float>();
}
// If format is identical, return original samples
if (inputFrequency == targetFrequency && inputChannels == targetChannels)
return inputSamples;
int inputLength = inputSamples.Length / inputChannels;
int targetLength = (int)Math.Floor((double)inputLength * targetFrequency / inputFrequency);
float[] outputSamples = new float[targetLength * targetChannels];
for (int i = 0; i < targetLength; i++)
{
double srcIndex = (double)i * inputFrequency / targetFrequency;
long idxLow = (long)Math.Floor(srcIndex);
long idxHigh = idxLow + 1;
float t = (float)(srcIndex - idxLow);
if (idxHigh >= inputLength) idxHigh = inputLength - 1;
if (idxLow >= inputLength) idxLow = inputLength - 1;
if (targetChannels == 1) // 1. Mono Output
{
float valLow, valHigh;
if (inputChannels == 1) // Mono -> Mono
{
valLow = inputSamples[idxLow];
valHigh = inputSamples[idxHigh];
}
else // Multi -> Mono (Downmix: Average all channels)
{
float sumLow = 0f;
float sumHigh = 0f;
for (int c = 0; c < inputChannels; c++)
{
sumLow += inputSamples[idxLow * inputChannels + c];
sumHigh += inputSamples[idxHigh * inputChannels + c];
}
valLow = sumLow / inputChannels;
valHigh = sumHigh / inputChannels;
}
outputSamples[i] = valLow + t * (valHigh - valLow);
}
else if (targetChannels == 2) // 2. Stereo Output
{
if (inputChannels == 1) // Mono -> Stereo (Duplicate to Left/Right)
{
float valLow = inputSamples[idxLow];
float valHigh = inputSamples[idxHigh];
float val = valLow + t * (valHigh - valLow);
outputSamples[i * 2] = val;
outputSamples[i * 2 + 1] = val;
}
else // Stereo/Multi -> Stereo (Map Left/Right, ignore extra channels)
{
float valLowL = inputSamples[idxLow * inputChannels];
float valHighL = inputSamples[idxHigh * inputChannels];
outputSamples[i * 2] = valLowL + t * (valHighL - valLowL);
float valLowR = inputSamples[idxLow * inputChannels + 1];
float valHighR = inputSamples[idxHigh * inputChannels + 1];
outputSamples[i * 2 + 1] = valLowR + t * (valHighR - valLowR);
}
}
else // 3. Multi-channel Output (e.g., 5.1 Surround)
{
for (int c = 0; c < targetChannels; c++)
{
float valLow, valHigh;
if (c < inputChannels)
{
valLow = inputSamples[idxLow * inputChannels + c];
valHigh = inputSamples[idxHigh * inputChannels + c];
}
else
{
valLow = inputSamples[idxLow * inputChannels];
valHigh = inputSamples[idxHigh * inputChannels];
}
outputSamples[i * targetChannels + c] = valLow + t * (valHigh - valLow);
}
}
}
return outputSamples;
}
}
}
Util/AudioSpectrumGenerator.cs → Util/Audio/AudioSpectrumGenerator.cs
+1 -1
View File
@@ -3,7 +3,7 @@ using System.Collections.Generic;
using ADOFAIRenderer.Core;
using UnityEngine;
namespace ADOFAIRenderer.Util
namespace ADOFAIRenderer.Util.Audio
{
public static class AudioSpectrumGenerator
{
Util/OfflineAudioMixer.cs → Util/Audio/OfflineAudioMixer.cs
+48 -106
View File
@@ -2,105 +2,8 @@ using System;
using System.Collections.Generic;
using UnityEngine;
namespace ADOFAIRenderer.Util
namespace ADOFAIRenderer.Util.Audio
{
public static class AudioResampler
{
public static float[] Resample(float[] inputSamples, int inputChannels, int inputFrequency, int targetChannels, int targetFrequency)
{
// ── Safety Validation ──
if (inputSamples.Length == 0 ||
inputChannels <= 0 || targetChannels <= 0 ||
inputFrequency <= 0 || targetFrequency <= 0)
{
return Array.Empty<float>();
}
// If format is identical, return original samples
if (inputFrequency == targetFrequency && inputChannels == targetChannels)
return inputSamples;
int inputLength = inputSamples.Length / inputChannels;
int targetLength = (int)Math.Floor((double)inputLength * targetFrequency / inputFrequency);
float[] outputSamples = new float[targetLength * targetChannels];
for (int i = 0; i < targetLength; i++)
{
double srcIndex = (double)i * inputFrequency / targetFrequency;
long idxLow = (long)Math.Floor(srcIndex);
long idxHigh = idxLow + 1;
float t = (float)(srcIndex - idxLow);
if (idxHigh >= inputLength) idxHigh = inputLength - 1;
if (idxLow >= inputLength) idxLow = inputLength - 1;
if (targetChannels == 1) // 1. Mono Output
{
float valLow, valHigh;
if (inputChannels == 1) // Mono -> Mono
{
valLow = inputSamples[idxLow];
valHigh = inputSamples[idxHigh];
}
else // Multi -> Mono (Downmix: Average all channels)
{
float sumLow = 0f;
float sumHigh = 0f;
for (int c = 0; c < inputChannels; c++)
{
sumLow += inputSamples[idxLow * inputChannels + c];
sumHigh += inputSamples[idxHigh * inputChannels + c];
}
valLow = sumLow / inputChannels;
valHigh = sumHigh / inputChannels;
}
outputSamples[i] = valLow + t * (valHigh - valLow);
}
else if (targetChannels == 2) // 2. Stereo Output
{
if (inputChannels == 1) // Mono -> Stereo (Duplicate to Left/Right)
{
float valLow = inputSamples[idxLow];
float valHigh = inputSamples[idxHigh];
float val = valLow + t * (valHigh - valLow);
outputSamples[i * 2] = val;
outputSamples[i * 2 + 1] = val;
}
else // Stereo/Multi -> Stereo (Map Left/Right, ignore extra channels)
{
float valLowL = inputSamples[idxLow * inputChannels];
float valHighL = inputSamples[idxHigh * inputChannels];
outputSamples[i * 2] = valLowL + t * (valHighL - valLowL);
float valLowR = inputSamples[idxLow * inputChannels + 1];
float valHighR = inputSamples[idxHigh * inputChannels + 1];
outputSamples[i * 2 + 1] = valLowR + t * (valHighR - valLowR);
}
}
else // 3. Multi-channel Output (e.g., 5.1 Surround)
{
for (int c = 0; c < targetChannels; c++)
{
float valLow, valHigh;
if (c < inputChannels)
{
valLow = inputSamples[idxLow * inputChannels + c];
valHigh = inputSamples[idxHigh * inputChannels + c];
}
else
{
valLow = inputSamples[idxLow * inputChannels];
valHigh = inputSamples[idxHigh * inputChannels];
}
outputSamples[i * targetChannels + c] = valLow + t * (valHigh - valLow);
}
}
}
return outputSamples;
}
}
public static class AudioClipCache
{
private static readonly Dictionary<string, CachedClipData> Cache = new();
@@ -165,9 +68,9 @@ namespace ADOFAIRenderer.Util
public static class OfflineAudioMixer
{
public struct SoundEvent
public class SoundEvent
{
public string ClipName;
public string ClipName = null!;
public double StartTime; // In seconds relative to dspTimeBase
public double EndTime; // In seconds relative to dspTimeBase (-1 if one-shot)
public float Volume;
@@ -175,11 +78,13 @@ namespace ADOFAIRenderer.Util
}
private static readonly List<SoundEvent> ActiveEvents = new();
private static System.Runtime.CompilerServices.ConditionalWeakTable<AudioSource, SoundEvent> _sourceMappings = new();
private static readonly object Lock = new();
// Target Audio Settings
private static int _targetChannels = 2;
private static int _targetSampleRate = 44100;
private static readonly float MasterVolume = 0.2f;
// BGM Cached Samples (Pre-resampled)
private static float[]? _bgmSamples;
@@ -221,18 +126,50 @@ namespace ADOFAIRenderer.Util
}
}
public static void RegisterSoundEvent(string clipName, double startTime, double endTime, float volume, float pitch)
public static void RegisterSoundEvent(AudioSource? source, string clipName, double startTime, double endTime, float volume, float pitch)
{
lock (Lock)
{
ActiveEvents.Add(new SoundEvent
var ev = new SoundEvent
{
ClipName = clipName,
StartTime = startTime,
EndTime = endTime,
Volume = volume,
Pitch = pitch
});
};
ActiveEvents.Add(ev);
if (source != null)
{
_sourceMappings.Remove(source);
_sourceMappings.Add(source, ev);
}
}
}
public static void RegisterSoundEvent(string clipName, double startTime, double endTime, float volume, float pitch)
{
RegisterSoundEvent(null, clipName, startTime, endTime, volume, pitch);
}
public static bool TryGetSoundEvent(AudioSource? source, out SoundEvent ev)
{
if (source == null)
{
ev = null!;
return false;
}
lock (Lock)
{
return _sourceMappings.TryGetValue(source, out ev);
}
}
public static bool RemoveSourceMapping(AudioSource source)
{
lock (Lock)
{
return _sourceMappings.Remove(source);
}
}
@@ -241,6 +178,7 @@ namespace ADOFAIRenderer.Util
lock (Lock)
{
ActiveEvents.Clear();
_sourceMappings = new System.Runtime.CompilerServices.ConditionalWeakTable<AudioSource, SoundEvent>();
_bgmSamples = null;
_bgmDuration = 0;
AudioClipCache.Clear();
@@ -307,7 +245,7 @@ namespace ADOFAIRenderer.Util
{
float valLow = _bgmSamples[idxLow * _targetChannels + c];
float valHigh = _bgmSamples[idxHigh * _targetChannels + c];
mixedBuffer[s * _targetChannels + c] += valLow + t * (valHigh - valLow);
mixedBuffer[s * _targetChannels + c] += (valLow + t * (valHigh - valLow)) * MasterVolume;
}
}
}
@@ -319,7 +257,11 @@ namespace ADOFAIRenderer.Util
{
var ev = ActiveEvents[i];
var clipData = AudioClipCache.GetOrCache(ev.ClipName, _targetChannels, _targetSampleRate, allowLoad: false);
if (clipData == null) continue;
if (clipData == null)
{
ActiveEvents.RemoveAt(i);
continue;
}
bool isSoundFinished = false;
int totalSamples = clipData.Samples.Length / _targetChannels;
@@ -365,7 +307,7 @@ namespace ADOFAIRenderer.Util
{
float valLow = clipData.Samples[idxLow * _targetChannels + c];
float valHigh = clipData.Samples[idxHigh * _targetChannels + c];
mixedBuffer[s * _targetChannels + c] += (valLow + t * (valHigh - valLow)) * ev.Volume;
mixedBuffer[s * _targetChannels + c] += (valLow + t * (valHigh - valLow)) * ev.Volume * MasterVolume;
}
}