Gaussian Blur; Pixelate Bitmap source code?

[iseahound]

The built in Gdip_BlurBitmap has very poor performance, and has questionable output, and is very slow. (13-26 ms)


On the otherhand, the built in Gdip_PixelateBitmap is very fast (~1.3 ms). Gdip Tutorial 12

Code: Select all

Gdip_PixelateBitmap(pBitmap, ByRef pBitmapOut, BlockSize)
{
	static PixelateBitmap
	
	Ptr := A_PtrSize ? "UPtr" : "UInt"
	
	if (!PixelateBitmap)
	{
		if A_PtrSize != 8 ; x86 machine code
		MCode_PixelateBitmap =
		(LTrim Join
		558BEC83EC3C8B4514538B5D1C99F7FB56578BC88955EC894DD885C90F8E830200008B451099F7FB8365DC008365E000894DC88955F08945E833FF897DD4
		397DE80F8E160100008BCB0FAFCB894DCC33C08945F88945FC89451C8945143BD87E608B45088D50028BC82BCA8BF02BF2418945F48B45E02955F4894DC4
		8D0CB80FAFCB03CA895DD08BD1895DE40FB64416030145140FB60201451C8B45C40FB604100145FC8B45F40FB604020145F883C204FF4DE475D6034D18FF
		4DD075C98B4DCC8B451499F7F98945148B451C99F7F989451C8B45FC99F7F98945FC8B45F899F7F98945F885DB7E648B450C8D50028BC82BCA83C103894D
		C48BC82BCA41894DF48B4DD48945E48B45E02955E48D0C880FAFCB03CA895DD08BD18BF38A45148B7DC48804178A451C8B7DF488028A45FC8804178A45F8
		8B7DE488043A83C2044E75DA034D18FF4DD075CE8B4DCC8B7DD447897DD43B7DE80F8CF2FEFFFF837DF0000F842C01000033C08945F88945FC89451C8945
		148945E43BD87E65837DF0007E578B4DDC034DE48B75E80FAF4D180FAFF38B45088D500203CA8D0CB18BF08BF88945F48B45F02BF22BFA2955F48945CC0F
		B6440E030145140FB60101451C0FB6440F010145FC8B45F40FB604010145F883C104FF4DCC75D8FF45E4395DE47C9B8B4DF00FAFCB85C9740B8B451499F7
		F9894514EB048365140033F63BCE740B8B451C99F7F989451CEB0389751C3BCE740B8B45FC99F7F98945FCEB038975FC3BCE740B8B45F899F7F98945F8EB
		038975F88975E43BDE7E5A837DF0007E4C8B4DDC034DE48B75E80FAF4D180FAFF38B450C8D500203CA8D0CB18BF08BF82BF22BFA2BC28B55F08955CC8A55
		1488540E038A551C88118A55FC88540F018A55F888140183C104FF4DCC75DFFF45E4395DE47CA68B45180145E0015DDCFF4DC80F8594FDFFFF8B451099F7
		FB8955F08945E885C00F8E450100008B45EC0FAFC38365DC008945D48B45E88945CC33C08945F88945FC89451C8945148945103945EC7E6085DB7E518B4D
		D88B45080FAFCB034D108D50020FAF4D18034DDC8BF08BF88945F403CA2BF22BFA2955F4895DC80FB6440E030145140FB60101451C0FB6440F010145FC8B
		45F40FB604080145F883C104FF4DC875D8FF45108B45103B45EC7CA08B4DD485C9740B8B451499F7F9894514EB048365140033F63BCE740B8B451C99F7F9
		89451CEB0389751C3BCE740B8B45FC99F7F98945FCEB038975FC3BCE740B8B45F899F7F98945F8EB038975F88975103975EC7E5585DB7E468B4DD88B450C
		0FAFCB034D108D50020FAF4D18034DDC8BF08BF803CA2BF22BFA2BC2895DC88A551488540E038A551C88118A55FC88540F018A55F888140183C104FF4DC8
		75DFFF45108B45103B45EC7CAB8BC3C1E0020145DCFF4DCC0F85CEFEFFFF8B4DEC33C08945F88945FC89451C8945148945103BC87E6C3945F07E5C8B4DD8
		8B75E80FAFCB034D100FAFF30FAF4D188B45088D500203CA8D0CB18BF08BF88945F48B45F02BF22BFA2955F48945C80FB6440E030145140FB60101451C0F
		B6440F010145FC8B45F40FB604010145F883C104FF4DC875D833C0FF45108B4DEC394D107C940FAF4DF03BC874068B451499F7F933F68945143BCE740B8B
		451C99F7F989451CEB0389751C3BCE740B8B45FC99F7F98945FCEB038975FC3BCE740B8B45F899F7F98945F8EB038975F88975083975EC7E63EB0233F639
		75F07E4F8B4DD88B75E80FAFCB034D080FAFF30FAF4D188B450C8D500203CA8D0CB18BF08BF82BF22BFA2BC28B55F08955108A551488540E038A551C8811
		8A55FC88540F018A55F888140883C104FF4D1075DFFF45088B45083B45EC7C9F5F5E33C05BC9C21800
		)
		else ; x64 machine code
		MCode_PixelateBitmap =
		(LTrim Join
		4489442418488954241048894C24085355565741544155415641574883EC28418BC1448B8C24980000004C8BDA99488BD941F7F9448BD0448BFA8954240C
		448994248800000085C00F8E9D020000418BC04533E4458BF299448924244C8954241041F7F933C9898C24980000008BEA89542404448BE889442408EB05
		4C8B5C24784585ED0F8E1A010000458BF1418BFD48897C2418450FAFF14533D233F633ED4533E44533ED4585C97E5B4C63BC2490000000418D040A410FAF
		C148984C8D441802498BD9498BD04D8BD90FB642010FB64AFF4403E80FB60203E90FB64AFE4883C2044403E003F149FFCB75DE4D03C748FFCB75D0488B7C
		24188B8C24980000004C8B5C2478418BC59941F7FE448BE8418BC49941F7FE448BE08BC59941F7FE8BE88BC69941F7FE8BF04585C97E4048639C24900000
		004103CA4D8BC1410FAFC94863C94A8D541902488BCA498BC144886901448821408869FF408871FE4883C10448FFC875E84803D349FFC875DA8B8C249800
		0000488B5C24704C8B5C24784183C20448FFCF48897C24180F850AFFFFFF8B6C2404448B2424448B6C24084C8B74241085ED0F840A01000033FF33DB4533
		DB4533D24533C04585C97E53488B74247085ED7E42438D0C04418BC50FAF8C2490000000410FAFC18D04814863C8488D5431028BCD0FB642014403D00FB6
		024883C2044403D80FB642FB03D80FB642FA03F848FFC975DE41FFC0453BC17CB28BCD410FAFC985C9740A418BC299F7F98BF0EB0233F685C9740B418BC3
		99F7F9448BD8EB034533DB85C9740A8BC399F7F9448BD0EB034533D285C9740A8BC799F7F9448BC0EB034533C033D24585C97E4D4C8B74247885ED7E3841
		8D0C14418BC50FAF8C2490000000410FAFC18D04814863C84A8D4431028BCD40887001448818448850FF448840FE4883C00448FFC975E8FFC2413BD17CBD
		4C8B7424108B8C2498000000038C2490000000488B5C24704503E149FFCE44892424898C24980000004C897424100F859EFDFFFF448B7C240C448B842480
		000000418BC09941F7F98BE8448BEA89942498000000896C240C85C00F8E3B010000448BAC2488000000418BCF448BF5410FAFC9898C248000000033FF33
		ED33F64533DB4533D24533C04585FF7E524585C97E40418BC5410FAFC14103C00FAF84249000000003C74898488D541802498BD90FB642014403D00FB602
		4883C2044403D80FB642FB03F00FB642FA03E848FFCB75DE488B5C247041FFC0453BC77CAE85C9740B418BC299F7F9448BE0EB034533E485C9740A418BC3
		99F7F98BD8EB0233DB85C9740A8BC699F7F9448BD8EB034533DB85C9740A8BC599F7F9448BD0EB034533D24533C04585FF7E4E488B4C24784585C97E3541
		8BC5410FAFC14103C00FAF84249000000003C74898488D540802498BC144886201881A44885AFF448852FE4883C20448FFC875E941FFC0453BC77CBE8B8C
		2480000000488B5C2470418BC1C1E00203F849FFCE0F85ECFEFFFF448BAC24980000008B6C240C448BA4248800000033FF33DB4533DB4533D24533C04585
		FF7E5A488B7424704585ED7E48418BCC8BC5410FAFC94103C80FAF8C2490000000410FAFC18D04814863C8488D543102418BCD0FB642014403D00FB60248
		83C2044403D80FB642FB03D80FB642FA03F848FFC975DE41FFC0453BC77CAB418BCF410FAFCD85C9740A418BC299F7F98BF0EB0233F685C9740B418BC399
		F7F9448BD8EB034533DB85C9740A8BC399F7F9448BD0EB034533D285C9740A8BC799F7F9448BC0EB034533C033D24585FF7E4E4585ED7E42418BCC8BC541
		0FAFC903CA0FAF8C2490000000410FAFC18D04814863C8488B442478488D440102418BCD40887001448818448850FF448840FE4883C00448FFC975E8FFC2
		413BD77CB233C04883C428415F415E415D415C5F5E5D5BC3
		)
		
		VarSetCapacity(PixelateBitmap, StrLen(MCode_PixelateBitmap)//2)
		Loop % StrLen(MCode_PixelateBitmap)//2		;%
			NumPut("0x" SubStr(MCode_PixelateBitmap, (2*A_Index)-1, 2), PixelateBitmap, A_Index-1, "UChar")
		DllCall("VirtualProtect", Ptr, &PixelateBitmap, Ptr, VarSetCapacity(PixelateBitmap), "uint", 0x40, A_PtrSize ? "UPtr*" : "UInt*", 0)
	}

	Gdip_GetImageDimensions(pBitmap, Width, Height)
	
	if (Width != Gdip_GetImageWidth(pBitmapOut) || Height != Gdip_GetImageHeight(pBitmapOut))
		return -1
	if (BlockSize > Width || BlockSize > Height)
		return -2

	E1 := Gdip_LockBits(pBitmap, 0, 0, Width, Height, Stride1, Scan01, BitmapData1)
	E2 := Gdip_LockBits(pBitmapOut, 0, 0, Width, Height, Stride2, Scan02, BitmapData2)
	if (E1 || E2)
		return -3

	E := DllCall(&PixelateBitmap, Ptr, Scan01, Ptr, Scan02, "int", Width, "int", Height, "int", Stride1, "int", BlockSize)
	
	Gdip_UnlockBits(pBitmap, BitmapData1), Gdip_UnlockBits(pBitmapOut, BitmapData2)
	return 0
}

However, it uses machine code. Does anyone have the source code so I can take a look?

Also, if anyone has an actual Guassian Blur function, maachine code, or gdip, I'd like to use it. (There's also a blur class for gdip, but documentation is lacking)

[Delta Pythagorean]

I doubt the Gaussian Blur is actually allowed or even able to be done.
You could try blurring the image a few times.
Other than that, I have a feeling photoshop has a Dll that you can call a command to blur the image with GB

[Flipeador]

In case someone is interested, GDI+ natively supports the Blur effect.
https://docs.microsoft.com/es-es/window ... fects-blur

You can see an example in AHK here: https://github.com/flipeador/Gdiplus-Au ... Bitmap.ahk.
Requires AutoHotkey v2.