Add preview audio loading code (#274)

* Set bass channel position * Load preview audio and fade functions * Try fix volume slide * Adjust play function for fade
YARC-Official · May 7, 2023 · c29e3f4 · c29e3f4
1 parent 01c54e9
commit c29e3f4
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Showing 8 changed files with 100 additions and 10 deletions.
diff --git a/Assets/Script/Audio/Bass/BassAudioManager.cs b/Assets/Script/Audio/Bass/BassAudioManager.cs
@@ -4,6 +4,7 @@
 using ManagedBass;
 using UnityEngine;
 using YARG.Serialization;
+using YARG.Song;
 using Debug = UnityEngine.Debug;
 
 namespace YARG {
@@ -210,10 +211,8 @@ public void LoadMogg(XboxMoggData moggData, bool isSpeedUp) {
 			int moggOffset = moggData.MoggAddressAudioOffset;
 			long moggLength = moggData.MoggAudioLength;
 
-			//byte[] moggArray = File.ReadAllBytes(moggData.MoggPath)[moggOffset..];
 			byte[] moggArray = moggData.GetOggDataFromMogg();
 
-			//int moggStreamHandle = Bass.CreateStream(moggArray, 0, moggArray.Length, BassFlags.Prescan | BassFlags.Decode | BassFlags.AsyncFile);
 			int moggStreamHandle = Bass.CreateStream(moggArray, 0, moggLength, BassFlags.Prescan | BassFlags.Decode | BassFlags.AsyncFile);
 			if (moggStreamHandle == 0) {
 				Debug.LogError($"Failed to load mogg file or position: {Bass.LastError}");
@@ -247,14 +246,30 @@ public void UnloadSong() {
 			_mixer = null;
 		}
 
-		public void Play() {
+		public void LoadPreviewAudio(SongEntry song) {
+			if (song is ExtractedConSongEntry conSong) {
+				LoadMogg(conSong.MoggInfo, false);
+			} else {
+				LoadSong(AudioHelpers.GetSupportedStems(song.Location), false);
+			}
+
+			SetPosition(song.PreviewStartTimeSpan.TotalSeconds);
+		}
+
+		public void Play() => Play(false);
+
+		private void Play(bool fadeIn) {
 			// Don't try to play if there's no audio loaded or if it's already playing
 			if (!IsAudioLoaded || IsPlaying) {
 				return;
 			}
 
 			foreach (var channel in _mixer.Channels.Values) {
-				channel.SetVolume(channel.Volume);
+				if (fadeIn) {
+					channel.SetVolume(0);
+				} else {
+					channel.SetVolume(channel.Volume);
+				}
 			}
 			if (_mixer.Play() != 0) {
 				Debug.Log($"Play error: {Bass.LastError}");
@@ -275,6 +290,19 @@ public void Pause() {
 			IsPlaying = _mixer.IsPlaying;
 		}
 
+		public void FadeIn() {
+			Play(true);
+			if (IsPlaying) {
+				_mixer?.FadeIn();	
+			}
+		}
+
+		public void FadeOut() {
+			if (IsPlaying) {
+				_mixer?.FadeOut();
+			}
+		}
+
 		public void PlaySoundEffect(SfxSample sample) {
 			var sfx = _sfxSamples[(int) sample];
 
@@ -311,9 +339,7 @@ public double GetVolumeSetting(SongStem stem) {
 			};
 		}
 
-		public void ApplyReverb(SongStem stem, bool reverb) {
-			_mixer?.GetChannel(stem)?.SetReverb(reverb);
-		}
+		public void ApplyReverb(SongStem stem, bool reverb) => _mixer?.GetChannel(stem)?.SetReverb(reverb);
 
 		public double GetPosition() {
 			if (_mixer is null)
@@ -322,9 +348,7 @@ public double GetPosition() {
 			return _mixer.GetPosition();
 		}
 
-		public void SetPosition(double position) {
-			throw new NotImplementedException();
-		}
+		public void SetPosition(double position) => _mixer?.SetPosition(position);
 
 		private void OnApplicationQuit() {
 			Unload();

diff --git a/Assets/Script/Audio/Bass/BassHelpers.cs b/Assets/Script/Audio/Bass/BassHelpers.cs
@@ -7,6 +7,8 @@ namespace YARG {
 	public static class BassHelpers {
 
 		public const float SONG_VOLUME_MULTIPLIER = 0.7f;
+
+		public const int FADE_TIME_MILLISECONDS = 2000;
 
 		public const int REVERB_SLIDE_IN_MILLISECONDS = 300;
 		public const int REVERB_SLIDE_OUT_MILLISECONDS = 500;

diff --git a/Assets/Script/Audio/Bass/BassMoggStem.cs b/Assets/Script/Audio/Bass/BassMoggStem.cs
@@ -120,6 +120,21 @@ public int Load(bool isSpeedUp, float speed) {
 			return 0;
 		}
 
+		public void FadeIn() {
+			double volumeSetting = _manager.GetVolumeSetting(Stem);
+
+			foreach (int channel in BassChannels) {
+				Bass.ChannelSetAttribute(channel, ChannelAttribute.Volume, 0);
+				Bass.ChannelSlideAttribute(channel, ChannelAttribute.Volume, (float)volumeSetting, BassHelpers.FADE_TIME_MILLISECONDS);
+			}
+		}
+
+		public void FadeOut() {
+			foreach (int channel in BassChannels) {
+				Bass.ChannelSlideAttribute(channel, ChannelAttribute.Volume, 0, BassHelpers.FADE_TIME_MILLISECONDS);
+			}
+		}
+
 		public void SetVolume(double newVolume) {
 			if (!_isLoaded) {
 				return;

diff --git a/Assets/Script/Audio/Bass/BassStemChannel.cs b/Assets/Script/Audio/Bass/BassStemChannel.cs
@@ -112,6 +112,16 @@ public int Load(bool isSpeedUp, float speed) {
 			return 0;
 		}
 
+		public void FadeIn() {
+			double volumeSetting = _manager.GetVolumeSetting(Stem);
+			Bass.ChannelSetAttribute(StreamHandle, ChannelAttribute.Volume, 0);
+			Bass.ChannelSlideAttribute(StreamHandle, ChannelAttribute.Volume, (float)volumeSetting, BassHelpers.FADE_TIME_MILLISECONDS);
+		}
+
+		public void FadeOut() {
+			Bass.ChannelSlideAttribute(StreamHandle, ChannelAttribute.Volume, 0, BassHelpers.FADE_TIME_MILLISECONDS);
+		}
+
 		public void SetVolume(double newVolume) {
 			if (StreamHandle == 0) {
 				return;

diff --git a/Assets/Script/Audio/Bass/BassStemMixer.cs b/Assets/Script/Audio/Bass/BassStemMixer.cs
@@ -115,6 +115,18 @@ public int Play(bool restart = false) {
 			return 0;
 		}
 
+		public void FadeIn() {
+			foreach (var channel in Channels.Values) {
+				channel.FadeIn();
+			}
+		}
+
+		public void FadeOut() {
+			foreach (var channel in Channels.Values) {
+				channel.FadeOut();
+			}
+		}
+
 		public int Pause() {
 			if (!IsPlaying) {
 				return 0;
@@ -137,6 +149,19 @@ public double GetPosition() {
 			return LeadChannel.GetPosition();
 		}
 
+		public void SetPosition(double position) {
+			if (LeadChannel is null) {
+				return;
+			}
+
+			foreach (var channel in Channels.Values) {
+				int handle = ((BassStemChannel)channel).StreamHandle;
+
+				long channelPosition = Bass.ChannelSeconds2Bytes(handle, position);
+				BassMix.ChannelSetPosition(handle, channelPosition);
+			}
+		}
+
 		public int AddChannel(IStemChannel channel) {
 			if (channel is not BassStemChannel bassChannel) {
 				throw new ArgumentException("Channel must be of type BassStemChannel");

diff --git a/Assets/Script/Audio/Interfaces/IAudioManager.cs b/Assets/Script/Audio/Interfaces/IAudioManager.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using YARG.Serialization;
+using YARG.Song;
 
 namespace YARG {
 	public interface IAudioManager {
@@ -29,8 +30,13 @@ public interface IAudioManager {
 		public void LoadMogg(XboxMoggData moggData, bool isSpeedUp);
 		public void UnloadSong();
 
+		public void LoadPreviewAudio(SongEntry song);
+
 		public void Play();
 		public void Pause();
+
+		public void FadeIn();
+		public void FadeOut();
 
 		public void PlaySoundEffect(SfxSample sample);
 

diff --git a/Assets/Script/Audio/Interfaces/IStemChannel.cs b/Assets/Script/Audio/Interfaces/IStemChannel.cs
@@ -10,6 +10,9 @@ public interface IStemChannel : IDisposable {
 		public double Volume { get; }
 
 		public int Load(bool isSpeedUp, float speed);
+
+		public void FadeIn();
+		public void FadeOut();
 
 		public void SetVolume(double newVolume);
 

diff --git a/Assets/Script/Audio/Interfaces/IStemMixer.cs b/Assets/Script/Audio/Interfaces/IStemMixer.cs
@@ -17,10 +17,15 @@ public interface IStemMixer : IDisposable {
 
 		public int Play(bool restart = false);
 
+		public void FadeIn();
+		public void FadeOut();
+
 		public int Pause();
 
 		public double GetPosition();
 
+		public void SetPosition(double position);
+
 		public int AddChannel(IStemChannel channel);
 		public int AddMoggChannel(IStemChannel channel, IList<float[]> matrixes);