From 6cb272b8401e8ecb63d6cef84406610469390dc9 Mon Sep 17 00:00:00 2001
From: Respirant <respiranto@gmail.com>
Date: Tue, 29 Dec 2020 14:01:16 +0300
Subject: [PATCH] function to destroy audio and change memory deallocation

---
 .../Private/RuntimeAudioImporterBPLibrary.cpp | 19 +++++++++++++++++++
 .../Public/RuntimeAudioImporterBPLibrary.h    |  5 ++++-
 .../RuntimeAudioImporter.Build.cs             |  6 +-----
 3 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/RuntimeAudioImporter/Source/RuntimeAudioImporter/Private/RuntimeAudioImporterBPLibrary.cpp b/RuntimeAudioImporter/Source/RuntimeAudioImporter/Private/RuntimeAudioImporterBPLibrary.cpp
index 254ccd7..2553cab 100644
--- a/RuntimeAudioImporter/Source/RuntimeAudioImporter/Private/RuntimeAudioImporterBPLibrary.cpp
+++ b/RuntimeAudioImporter/Source/RuntimeAudioImporter/Private/RuntimeAudioImporterBPLibrary.cpp
@@ -79,6 +79,23 @@ class USoundWave* URuntimeAudioImporterBPLibrary::GetSoundWaveObject(const uint8
 	return sw;
 }
 
+/* Destroy USoundWave static object */
+void URuntimeAudioImporterBPLibrary::DestroySoundWave(USoundWave* ReadySoundWave, bool& SuccessfullyDestroyed) {
+	if (IsValid(ReadySoundWave) && ReadySoundWave->IsReadyForFinishDestroy()) {
+		FMemory::Free(ReadySoundWave->RawPCMData);
+
+		ReadySoundWave->RawData.RemoveBulkData();
+		ReadySoundWave->InvalidateCompressedData();
+		ReadySoundWave->FreeResources();
+		ReadySoundWave->RemoveAudioResource();
+		ReadySoundWave->ConditionalBeginDestroy();
+		SuccessfullyDestroyed = true;
+	}
+	else {
+		SuccessfullyDestroyed = false;
+	}
+}
+
 #include "ThirdParty/dr_wav.h"
 
 #include "ThirdParty/dr_mp3.h"
@@ -125,7 +142,9 @@ class USoundWave* URuntimeAudioImporterBPLibrary::GetUSoundWaveFromAudioFile_Int
 
 	USoundWave* ReadyUSoundWave = GetSoundWaveObject((const uint8*)pWavFileData, wavFileSize, status); // A ready USoundWave static object
 
+	drwav_free(pSampleData, NULL);
 	drwav_free(pWavFileData, NULL);
+
 	return ReadyUSoundWave;
 }
 
diff --git a/RuntimeAudioImporter/Source/RuntimeAudioImporter/Public/RuntimeAudioImporterBPLibrary.h b/RuntimeAudioImporter/Source/RuntimeAudioImporter/Public/RuntimeAudioImporterBPLibrary.h
index dd48789..d4e0554 100644
--- a/RuntimeAudioImporter/Source/RuntimeAudioImporter/Public/RuntimeAudioImporterBPLibrary.h
+++ b/RuntimeAudioImporter/Source/RuntimeAudioImporter/Public/RuntimeAudioImporterBPLibrary.h
@@ -4,7 +4,7 @@
 
 #include "Kismet/BlueprintFunctionLibrary.h"
 
-#include "Runtime/Engine/Classes/Sound/SoundWave.h"
+#include "Sound/SoundWave.h"
 
 #include "Developer/TargetPlatform/Public/Interfaces/IAudioFormat.h"
 
@@ -47,6 +47,9 @@ public:
 	UFUNCTION(BlueprintCallable, meta = (Keywords = "Importer, Transcoder, Converter, MP3, FLAC, WAV", ToolTip = "Transcode audio file to USoundWave static object"), Category = "RuntimeAudioImporter")
 		static class USoundWave* GetSoundWaveFromAudioFile(const FString & filePath, TEnumAsByte < AudioFormat > Format, TEnumAsByte < TranscodingStatus > & status, bool DefineFormatAutomatically);
 
+	UFUNCTION(BlueprintCallable, meta = (Keywords = "MP3, FLAC, WAV, Destroy", ToolTip = "After the Soundwave is no longer needed, you need to call this function to free memory"), Category = "RuntimeAudioImporter")
+		static void DestroySoundWave(USoundWave * ReadySoundWave, bool& SuccessfullyDestroyed);
+
 private:
 
 	/* Main internal get USoundWave from audio file */
diff --git a/RuntimeAudioImporter/Source/RuntimeAudioImporter/RuntimeAudioImporter.Build.cs b/RuntimeAudioImporter/Source/RuntimeAudioImporter/RuntimeAudioImporter.Build.cs
index 50add96..1dcbb9f 100644
--- a/RuntimeAudioImporter/Source/RuntimeAudioImporter/RuntimeAudioImporter.Build.cs
+++ b/RuntimeAudioImporter/Source/RuntimeAudioImporter/RuntimeAudioImporter.Build.cs
@@ -19,11 +19,7 @@ public class RuntimeAudioImporter : ModuleRules
             }
             );
 
-        PrivateIncludePaths.AddRange(
-            new string[] {
-				// ... add other private include paths required here ...
-			}
-            );
+        //PrivateIncludePaths.Add(Path.Combine(ModuleDirectory, "ThirdParty"));
 
 
         PublicDependencyModuleNames.AddRange(