ADOFAIRenderer/Patch/Engine/AudioPatches.cs

using ADOFAIRenderer.Core;
using ADOFAIRenderer.Util;
using HarmonyLib;
using UnityEngine.Audio;

namespace ADOFAIRenderer.Patch.Engine
{
    [HarmonyPatch(typeof(AudioManager), "_Play")]
    public static class AudioManagerPlayPatch
    {
        [HarmonyPrefix]
        public static bool Prefix(string snd, double time, AudioMixerGroup group, float volume, int priority)
        {
            if (RenderManager.IsCapturingActive && RenderManager.Instance.Configuration.RenderAudio)
            {
                // Cache the clip on the main thread
                AudioClipCache.GetOrCache(snd, RenderManager.Instance.Configuration.AudioChannels, RenderManager.Instance.Configuration.AudioSampleRate, allowLoad: true);

                // Convert absolute DSP time to relative time in seconds from render start
                double relativeStartTime = time - RenderManager.Instance.dspTimeBase;

                // Register event to the offline mixer (default pitch = 1.0f)
                OfflineAudioMixer.RegisterSoundEvent(snd, relativeStartTime, -1.0, volume, 1.0f);
            }
            return true; // Let the original method execute to prevent NullReferenceException
        }
    }

    [HarmonyPatch(typeof(scrConductor), "PlayWithEndTime")]
    public static class PlayWithEndTimePatch
    {
        [HarmonyPrefix]
        public static bool Prefix(string snd, double time, double endTime, float volume, int priority)
        {
            if (RenderManager.IsCapturingActive && RenderManager.Instance.Configuration.RenderAudio)
            {
                // Cache the clip on the main thread
                AudioClipCache.GetOrCache(snd, RenderManager.Instance.Configuration.AudioChannels, RenderManager.Instance.Configuration.AudioSampleRate, allowLoad: true);

                // Convert absolute DSP times to relative times in seconds from render start
                double relativeStartTime = time - RenderManager.Instance.dspTimeBase;
                double relativeEndTime = endTime - RenderManager.Instance.dspTimeBase;

                // Register looping sound event to the offline mixer (default pitch = 1.0f)
                OfflineAudioMixer.RegisterSoundEvent(snd, relativeStartTime, relativeEndTime, volume, 1.0f);
            }
            return true; // Let the original method execute
        }
    }
}