* A comma separated list of formats to use for .pak file and IoStore compression. If more than one is specified, the list is in order of priority, with fallbacks to other formats
	 * in case of errors or unavailability of the format (plugin not enabled, etc).
	 * Commonly PackageCompressionFormat=Oodle or PackageCompressionFormat=None
	 */
	UPROPERTY(config, EditAnywhere, Category = Packaging, AdvancedDisplay, meta = (DisplayName = "Package Compression Format"))
	FString PackageCompressionFormat;
	
	/**
	 * Force use of PackageCompressionFormat (do not use override HardwareCompressionFormat from DDPI)
	 */
	UPROPERTY(config, EditAnywhere, Category=Packaging, AdvancedDisplay, meta=(DisplayName="Use this Compression Format not hardware override"))
	bool bForceUseProjectCompressionFormatIgnoreHardwareOverride;

	/**
	 * A generic setting for allowing a project to control compression settings during .pak file and iostore compression.
	 * For instance PackageAdditionalCompressionOptions=-compressionblocksize=1MB -asynccompression
	 */

bCompressed=True
bForceUseProjectCompressionFormat=False
PackageCompressionFormat=Oodle
PackageAdditionalCompressionOptions=-compressionblocksize=256KB
PackageCompressionMethod=Kraken
PackageCompressionLevel_Distribution=7
PackageCompressionLevel_TestShipping=5
PackageCompressionLevel_DebugDevelopment=4

* This can be set in DefaultGame.ini then overrides set up per-platform.
* 
* The Engine also has a veto compressionformat set up in the DataDrivenPlatformInfo.ini for each platform in the field
* "HardwareCompressionFormat"
* eg. platforms that don't want any software compressor can set "HardwareCompressionFormat=None" and this will override what you
* set in "PackageCompressionFormat".
* 
* The idea is in typical use, you set "PackageCompressionFormat" for your Game, and you get that compressor on most platforms, but on
* some platforms that don't want compression, it automatically turns off.
* 
* If you want to force use of your Game.ini compressor (ignore the HardwareCompressionFormat) you can set bForceUseProjectCompressionFormat
* in ProjectPackagingSettings.
* 
* 
* ***************************/

#include "CoreMinimal.h"
#include "CoreTypes.h"
#include "Misc/Compression.h"
#include "Misc/ICompressionFormat.h"
#include "Misc/CommandLine.h"
#include "Misc/ConfigCacheIni.h"
#include "Misc/Parse.h"

/*
#if WITH_EDITOR
#include "Settings/ProjectPackagingSettings.h"
#endif
*/

#include "HAL/PlatformProcess.h"

#include "Compression/OodleDataCompression.h"
#include "oodle2.h"


#define OODLE_DERIVEDDATA_VER TEXT("BA7AA26CD1C3498787A3F3AA53895042")

// function pointer for old DLL import :
extern "C"
{
typedef OO_SINTa (OOLINK t_fp_OodleLZ_Compress)(OodleLZ_Compressor compressor,
    const void * rawBuf,OO_SINTa rawLen,void * compBuf,
    OodleLZ_CompressionLevel selection,
    const OodleLZ_CompressOptions * pOptions,
    const void * dictionaryBase,
    const void * lrm);

typedef OO_SINTa (OOLINK t_fp_OodleSetAllocators)(
	t_fp_OodleCore_Plugin_MallocAligned* fp_OodleMallocAligned,
	t_fp_OodleCore_Plugin_Free* fp_OodleFree);
};


struct FOodleDataCompressionFormat : ICompressionFormat
{
	OodleLZ_Compressor Compressor;
	OodleLZ_CompressionLevel CompressionLevel;
	OodleLZ_CompressOptions CompressionOptions;
	
	//  OodleLZCompressFuncPtr is non-null of a DLL/so was loaded for encoding
	t_fp_OodleLZ_Compress  * OodleLZCompressFuncPtr = nullptr;

	static void* OodleAlloc(OO_SINTa Size, OO_S32 Alignment)
	{
		return FMemory::Malloc(SIZE_T(Size), uint32(Alignment));

				if (bIsCompressionFormatNone)
				{
					PlatformGameConfig.GetString("/Script/UnrealEd.ProjectPackagingSettings", "PackageCompressionFormat", out CompressionFormats);
					// empty CompressionFormats string means "use default" eg. zlib;
				}	
			}
			else if (bIsCompressionFormatNone)
			{
				// rather than pass "-compressed" + format=None through to UnrealPak/iostore

			else
			{
				PlatformGameConfig.GetString("/Script/UnrealEd.ProjectPackagingSettings", "PackageCompressionFormat", out CompressionFormats);
				// empty CompressionFormats string means "use default" eg. zlib
			}

			if (Params.ForceUncompressed)
			{
				//-ForceUncompressed on the command line means really don't do it even if the ini or DDPI say to do it