A2OS/source/VideoExample.Mod

MODULE VideoExample; (** AUTHOR "thomas.frey@alumni.ethz.ch"; PURPOSE "Webcam support for WinA2"; *)
(*PH 100317: proposal for more video formats from webcams and built-in cameras delivering YUV422 data *)

IMPORT
	Modules, Kernel, KernelLog, GDI32, Kernel32, User32, SYSTEM,
	WMWindowManager, Strings, WMRectangles, WMGraphics, Raster, RasterPixelFormats, VfW, Codecs, Commands, Files, Streams;

TYPE
	FrameHandler* = PROCEDURE {DELEGATE} (buffer : Raster.Image);
	PreviewWindow* = OBJECT (WMWindowManager.BufferWindow);
		PROCEDURE &New*(width, height : LONGINT);
		BEGIN
			Init(width, height, FALSE);
			WMWindowManager.AddWindow(SELF, 200, 200);
			SetTitle(Strings.NewString("Preview Window"));
			canvas.Fill(WMRectangles.MakeRect(0, 0, GetWidth(), GetHeight()), WMGraphics.White, WMGraphics.ModeCopy);
			Invalidate(WMRectangles.MakeRect(0, 0, GetWidth(), GetHeight()));
		END New;
		(* Overwrite draw procedure because we do not want any interpolation *)
		PROCEDURE Draw*(canvas : WMGraphics.Canvas; w, h, q : LONGINT);
		BEGIN
			Draw^(canvas, w, h, 0);
		END Draw;
	END PreviewWindow;

	Starter* = OBJECT
	VAR opened, stopped : BOOLEAN;

		PROCEDURE Open;
		VAR str : ARRAY 16 OF CHAR;
			name, version : ARRAY 64 OF CHAR;
			i : LONGINT;
			info : GDI32.BitmapInfoHeader;
			capRec : VfW.Capturerec;
			found : BOOLEAN;
		BEGIN
			opened := FALSE;
			str := "";
			handle := VfW.CapCreateCaptureWindow(str, VfW.WS_POPUP, 0, 0, 1, 1, 0, 0);
			IF handle # 0 THEN
				i := 0; found := FALSE;
				WHILE ~found & (i < 10) DO
					IF VfW.CapGetDriverDescription(i, name, 64, version, 64) THEN
						IF VfW.CapDriverConnect(handle, i) THEN
							KernelLog.String("Connected to the driver"); KernelLog.Ln;
							IF VfW.CapGetVideoFormat(handle, info) THEN
								VfW.DumpBitmapInfoHeader(info);
								found:=TRUE;
								IF info.biCompression = 844715353 (*YUY2*) THEN (*keep it*)
								ELSE
									info.biBitCount := 24;
									(*info.biWidth := 960;
									info.biHeight := 720; *)
									info.biWidth := 640;
									info.biHeight := 480;
									IF VfW.CapSetVideoFormat(handle, info) THEN
										KernelLog.String("Set new info"); KernelLog.Ln;
										found := TRUE;
									ELSE
										KernelLog.String("SetVideoFormat failed"); KernelLog.Ln;
										IF VfW.CapDriverDisconnect(handle) THEN
											handle := 0;
										END;
									END;
								END;
							END;
						ELSE
							KernelLog.String("Connecting failed"); KernelLog.Ln
						END
					END;
					INC(i);
				END;
				IF found THEN
					IF VfW.CapGetSequenceSetup(handle, capRec) THEN
						VfW.DumpCapRec(capRec);
						(*capRec.dwRequestMicroSecPerFrame := 1000;*)
						capRec.wPercentDropForError := 100;
						(*capRec.fYield := 1;*)
						capRec.fAbortLeftMouse := 0;
						capRec.fAbortRightMouse := 0;
						IF VfW.CapSetSequenceSetup(handle, capRec) THEN
							KernelLog.String("new sequence setup"); KernelLog.Ln;
						END
					END;
					IF VfW.CapSetCallbackYield(handle, YieldCallback) THEN END;
					IF VfW.CapSetCallbackStream(handle, FrameReceived) THEN
						(* preview *)
						NEW(buffer);
						IF info.biCompression = 844715353 (*YUV422*) THEN
							Raster.Create(buffer, info.biWidth, info.biHeight, RasterPixelFormats.YUV422);
						ELSIF info.biBitCount = 24  THEN
							Raster.Create(buffer, info.biWidth, info.biHeight, Raster.BGR888);
						END;
						IF s # NIL THEN s.Close END; NEW(s, info.biWidth, info.biHeight);
						IF VfW.CapSequenceNoFile(handle) THEN
						END;
					END;
				END
			END
		END Open;

		PROCEDURE Stop;
		BEGIN
			stopped := TRUE;
			IF VfW.CapCaptureStop(handle) THEN KernelLog.String("Stoped"); KernelLog.Ln; END;
		END Stop;

		PROCEDURE MsgLoop;
		VAR msg: User32.Msg;  i: LONGINT;
		BEGIN
			LOOP
				i := User32.GetMessage( msg, 0, 0, 0 );
				IF i = 0 THEN EXIT
				ELSIF i # -1 THEN
					IF ( msg.message = User32.WMKeyDown ) THEN
						(* Translate virtual key code  to character. This generates a WMChar message if translation succeeds. Since
						AOS doesn't allow ALT-Printable-Keys combinations, we don't translate User32.WMSysKeyDown messages
						that would generate WMSysChar messages *)
						i := User32.TranslateMessage( msg );
					END;
					i := User32.DispatchMessage( msg )
				END;
				Kernel32.Sleep( 1 );
			END
		END MsgLoop;
	BEGIN {ACTIVE}
		stopped := FALSE;
		Open;
		MsgLoop;
		IF VfW.CapDriverDisconnect(handle) THEN
			KernelLog.String("Disonnected."); KernelLog.Ln;
			handle := 0;
		END
	END Starter;

VAR
	s : PreviewWindow;
	handle : VfW.HWND;
	buffer : Raster.Image;
	starter : Starter;
	frameHandler : FrameHandler;

(* Sends a single image through the video processing pipeline. *)
PROCEDURE SimulateImage*(context : Commands.Context); (** filename ~ *)
VAR
	fn, name : Files.FileName;
	res: WORD; w, h, x : LONGINT;
	dec : Codecs.ImageDecoder;
	rdr : Streams.Reader;
	ext : ARRAY 16 OF CHAR;
BEGIN
	context.arg.SkipWhitespace; context.arg.String(fn);
	Strings.Trim(fn, '"');
	Strings.GetExtension(fn, name, ext);
	Strings.UpperCase(ext);
	dec := Codecs.GetImageDecoder(ext);
	IF dec = NIL THEN
		context.error.String("No decoder found for "); context.error.String(ext); context.error.Ln;
		RETURN
	END;
	rdr := Codecs.OpenInputStream(fn);
	IF rdr # NIL THEN
		dec.Open(rdr, res);
		IF res = 0 THEN
			dec.GetImageInfo(w, h, x, x);
			IF (buffer = NIL) THEN NEW(buffer); Raster.Create(buffer, w, h, Raster.BGR888) END;
			IF s = NIL THEN NEW(s, buffer.width, buffer.height) END;
			dec.Render(buffer);
			IF (frameHandler # NIL) & (buffer # NIL) THEN frameHandler(buffer) END;
			IF buffer # NIL THEN s.canvas.DrawImage(0, 0, buffer, WMGraphics.ModeCopy) END;
			s.Invalidate(WMRectangles.MakeRect(0, 0, s.GetWidth(), s.GetHeight()))
		ELSE
			context.error.String("WMPicView: Could not open decoder for file "); context.error.String(fn); context.error.Ln;
		END;
	ELSE
		context.error.String("WMPicView: Could not open inputstream for file "); context.error.String(fn); context.error.Ln;
	END;
END SimulateImage;

PROCEDURE GetTimer():HUGEINT;
VAR t : HUGEINT;
	res : Kernel32.BOOL;
BEGIN
	res := Kernel32.QueryPerformanceCounter(SYSTEM.VAL(Kernel32.LargeInteger, t));
	RETURN t;
END GetTimer;

PROCEDURE GetFreq():HUGEINT;
VAR t : HUGEINT;
	res : Kernel32.BOOL;
BEGIN
	res := Kernel32.QueryPerformanceFrequency(SYSTEM.VAL(Kernel32.LargeInteger, t));
	RETURN t;
END GetFreq;

PROCEDURE {WINAPI} FrameReceived (hWnd : VfW.HWND; VAR lpVHdr : VfW.VHdr) : User32.LResult;
VAR y : LONGINT;
	i : ADDRESS;
	t0, t1 : HUGEINT;
	t, f : LONGREAL;
	trap : BOOLEAN;
	bytesperpixel:LONGINT;
BEGIN
	trap := TRUE;
	t0 := GetTimer();
	IF s # NIL THEN
		i := lpVHdr.lpData;
		bytesperpixel:= buffer.fmt.bpp DIV 8;
		FOR y := buffer.height - 1 TO 0 BY -1 DO
			SYSTEM.MOVE(i, ADDRESSOF(buffer.mem[0]) + buffer.bpr * y, buffer.width * bytesperpixel);
			i := i + buffer.width * bytesperpixel;
		END;
		IF (frameHandler # NIL) & (buffer # NIL) THEN frameHandler(buffer) END;
		IF buffer # NIL THEN s.canvas.DrawImage(0, 0, buffer, WMGraphics.ModeCopy) END;
		s.Invalidate(WMRectangles.MakeRect(0, 0, s.GetWidth(), s.GetHeight()))
	END;
	t1 := GetTimer();
	t := t1 - t0;
	f := GetFreq();
	f := f / 1000;
	(*KernelLog.String("total = "); KernelLog.Int(ENTIER(t / f), 0); KernelLog.Ln; *)
	trap := FALSE;
FINALLY
	IF trap THEN
		KernelLog.String("Handler failed, removing it."); KernelLog.Ln;
		frameHandler := NIL
	END;
	RETURN 1
END FrameReceived;

PROCEDURE {WINAPI} YieldCallback(hWnd : VfW.HWND) : User32.LResult;
VAR msg: User32.Msg;  i, j: LONGINT;
BEGIN
	REPEAT
		i := VfW.PeekMessage( msg, hWnd, 0, 0, 1 );
		IF i # 0 THEN j := User32.DispatchMessage(msg) END
	UNTIL i = 0;
	RETURN 1
END YieldCallback;

PROCEDURE SnapshotFirstPossible*;
VAR str : ARRAY 16 OF CHAR;
	name, version : ARRAY 64 OF CHAR;
	i : LONGINT;
	timer : Kernel.Timer;
	info : GDI32.BitmapInfoHeader;
BEGIN
	str := "";
	handle := VfW.CapCreateCaptureWindow(str, VfW.WS_POPUP, 0, 0, 1, 1, 0, 0);
	IF handle = 0 THEN
		KernelLog.String("Failed to create the window"); KernelLog.Ln
	ELSE
		KernelLog.String("Created the window"); KernelLog.Ln;
		FOR i := 0 TO 9 DO
			IF VfW.CapGetDriverDescription(i, name, 64, version, 64) THEN
				KernelLog.String(name); KernelLog.String(" ");
				KernelLog.String(version); KernelLog.Ln;
				IF VfW.CapDriverConnect(handle, i) THEN
					KernelLog.String("Connected to the driver"); KernelLog.Ln;
					IF VfW.CapGetVideoFormat(handle, info) THEN VfW.DumpBitmapInfoHeader(info) END;
					IF info.biCompression=844715353 (*YUY2 format*) THEN (* keep it *)
					ELSE
						info.biBitCount := 24;
						info.biWidth := 640;
						info.biHeight := 480;
						IF VfW.CapSetVideoFormat(handle, info) THEN
							KernelLog.String("Set new info"); KernelLog.Ln;
						ELSE
							KernelLog.String("Setting new connection failed."); KernelLog.Ln;
							IF VfW.CapDriverDisconnect(handle) THEN
								KernelLog.String("Setting new connection failed. Disonnected."); KernelLog.Ln;
								handle := 0;
							END;
						END;
					END;
					IF VfW.CapSetCallbackStream(handle, FrameReceived) THEN
						(* preview *)
						NEW(buffer);
						IF info.biCompression = 844715353 (*YUV422*) THEN
							Raster.Create(buffer, info.biWidth, info.biHeight, RasterPixelFormats.YUV422);
						ELSIF info.biBitCount = 24 THEN
							Raster.Create(buffer, info.biWidth, info.biHeight, Raster.BGR888);
						END;
						IF s # NIL THEN s.Close END; NEW(s, info.biWidth, info.biHeight);
						IF VfW.CapSequenceNoFile(handle) THEN
							KernelLog.String("Started"); KernelLog.Ln;
							NEW(timer);
							timer.Sleep(10000);
							KernelLog.String("Stopping"); KernelLog.Ln;
							IF VfW.CapCaptureStop(handle) THEN KernelLog.String("Stop"); KernelLog.Ln; END
						END;
						(*FOR i := 0 TO 1000 DO
							IF CapGrabFrame(handle) THEN END;
						END*)
					END;
					IF VfW.CapDriverDisconnect(handle) THEN
						KernelLog.String("Disonnected."); KernelLog.Ln;
						handle := 0;
					END
				ELSE
					KernelLog.String("Connecting failed"); KernelLog.Ln
				END
			END
		END
	END
END SnapshotFirstPossible;

PROCEDURE Start*;
BEGIN
	NEW(starter);
END Start;

PROCEDURE Stop*;
BEGIN
	starter.Stop;
END Stop;

PROCEDURE InstallFrameHandler*(handler : FrameHandler);
BEGIN
	frameHandler := handler
END InstallFrameHandler;

PROCEDURE Cleanup;
BEGIN
	IF (handle = 0) & VfW.CapDriverDisconnect(handle) THEN
		KernelLog.String("Disconnected."); KernelLog.Ln;
		handle := 0;
	ELSE KernelLog.String("Disonnecting failed."); KernelLog.Ln;
	END;
	IF s # NIL THEN s.Close END
END Cleanup;

BEGIN
	Modules.InstallTermHandler(Cleanup)
END VideoExample.


VideoExample.Open ~
VideoExample.SimulateImage "Picture 1.jpg" ~
VideoExample.Start ~
VideoExample.Stop ~
System.Free TestVideo VideoExample VfW  RasterPixelFormats~


Video compression formats in Windows (FOURCC identifiers) :
    810961203 {3IV0} : result := 'MPEG4-based codec 3ivx';
    827738419 {3IV1} : result := 'MPEG4-based codec 3ivx';
    844515635 {3IV2} : result := 'MPEG4-based codec 3ivx';
   1482049843 {3IVX} : result := 'MPEG4-based codec 3ivx';
   1129529665 {AASC} : result := 'Autodesk Animator codec';
   1381581377 {ABYR} : result := 'Kensington codec';
   1229800769 {AEMI} : result := 'Array VideoONE MPEG1-I Capture';
   1129072193 {AFLC} : result := 'Autodesk Animator FLC (256 color)';
   1229735489 {AFLI} : result := 'Autodesk Animator FLI (256 color)';
   1196444993 {AMPG} : result := 'Array VideoONE MPEG';
   1296649793 {ANIM} : result := 'Intel RDX';
    825512001 {AP41} : result := 'AngelPotion Definitive (hack MS MP43)';
    827740993 {ASV1} : result := 'Asus Video V1';
    844518209 {ASV2} : result := 'Asus Video V2';
   1482052417 {ASVX} : result := 'Asus Video 2.0';
    844256577 {AUR2} : result := 'Aura 2 Codec - YUV 422';
   1095914817 {AURA} : result := 'Aura 1 Codec - YUV 411';
   1245992513 {AVDJ} : result := 'Avid Motion JPEG';
   1314018881 {AVRN} : result := 'Avid Motion JPEG';
   1380997697 {AZPR} : result := 'Quicktime Apple Video';
   1263421762 {BINK} : result := 'Bink Video (RAD Game Tools) (256 color)';
    808604738 {BT20} : result := 'Conexant (ex Brooktree) ProSummer MediaStream';
   1447253058 {BTCV} : result := 'Conexant Composite Video';
   1129731138 {BTVC} : result := 'Conexant Composite Video';
    808539970 {BW10} : result := 'Data Translation Broadway MPEG Capture/Compression';
    842089283 {CC12} : result := 'Intel YUV12 Codec';
   1129727043 {CDVC} : result := 'Canopus DV Codec';
   1128482371 {CFCC} : result := 'Conkrete DPS Perception Motion JPEG';
   1229211459 {CGDI} : result := 'Camcorder Video (MS Office 97)';
   1296123971 {CHAM} : result := 'WinNow Caviara Champagne';
   1196444227 {CJPG} : result := 'Creative Video Blaster Webcam Go JPEG';
   1380600899 {CLJR} : result := 'Cirrus Logic YUV 4:1:1';
   1264143683 {CMYK} : result := 'Common Data Format in Printing';
   1095520323 {CPLA} : result := 'Weitek YUV 4:2:0 Planar';
   1296126531 {CRAM} : result := 'Microsoft Video 1';
   1145656899 {CVID} : result := 'Cinepak by Radius YUV 4:2:2';
   1414289219 {CWLT} : result := 'Microsoft Color WLT DIB';
   1448433987 {CYUV} : result := 'Creative Labs YUV 4:2:2';
   1498765635 {CYUY} : result := 'ATI Technologies YUV';
    825635396 {D261} : result := 'H.261';
    859189828 {D263} : result := 'H.263';
      4344132 {DIB } : result := 'Full Frames (Uncompressed)';
    827738436 {DIV1} : result := 'FFmpeg-4 V1 (hacked MS MPEG-4 V1)';
    844515652 {DIV2} : result := 'FFmpeg-4 V2 (hacked MS MPEG-4 V2)';
    861292868 {DIV3} : result := 'DivX;-) MPEG-4 Low-Motion';
    878070084 {DIV4} : result := 'DivX;-) MPEG-4 Fast-Motion';
    894847300 {DIV5} : result := 'DivX MPEG-4';
    911624516 {DIV6} : result := 'DivX MPEG-4';
   1482049860 {DIVX} : result := 'OpenDivX (DivX 4.0 and later)';
    826428740 {DMB1} : result := 'Matrox Rainbow Runner hardware compression (Motion JPEG)';
    843205956 {DMB2} : result := 'Motion JPEG codec used by Paradigm';
    810766404 {DPS0} : result := 'DPS Reality Motion JPEG';
   1129533508 {DPSC} : result := 'DPS PAR Motion JPEG';
   1146508100 {DSVD} : result := 'Microsoft DirectShow DV';
   1262703940 {DUCK} : result := 'True Motion 1.0';
    892491332 {DV25} : result := 'Matrox DVCPRO codec';
    808801860 {DV50} : result := 'Matrox DVCPRO50 codec';
      4412996 {DVC } : result := 'MainConcept DV Codec';
   1346590276 {DVCP} : result := 'Sony Digital Video (DV)';
    843404868 {DVE2} : result := 'DVE-2 Videoconferencing Codec';
   1145591364 {DVHD} : result := 'DV 1125 lines at 30.00 Hz or 1250 lines at 25.00 Hz';
   1095587396 {DVMA} : result := 'Darim Vision DVMPEG';
    827545156 {DVS1} : result := 'DV compressed in SD (SDL)';
   1146312260 {DVSD} : result := 'Sony Digital Video (DV) 525 lines at 29.97 Hz or 625 lines at 25.00 Hz';
    827872836 {DVX1} : result := 'DVX1000SP Video Decoder';
    844650052 {DVX2} : result := 'DVX2000S Video Decoder';
    861427268 {DVX3} : result := 'DVX3000S Video Decoder';
    808802372 {DX50} : result := 'DivX 5.0 codec';
    827611204 {DXT1} : result := 'DirectX Compressed Texture';
    844388420 {DXT2} : result := 'DirectX Compressed Texture';
    861165636 {DXT3} : result := 'DirectX Compressed Texture';
    877942852 {DXT4} : result := 'DirectX Compressed Texture';
    894720068 {DXT5} : result := 'DirectX Compressed Texture';
   1129601092 {DXTC} : result := 'DirectX Texture Compression';
    810634053 {EKQ0} : result := 'Else graphics card codec';
    810241093 {ELK0} : result := 'Else graphics card codec';
   1446137157 {EM2V} : result := 'Etymonix MPEG-2 I-frame';
   1346589509 {ESCP} : result := 'Eidos Technologies Escape codec';
    827741253 {ETV1} : result := 'eTreppid Video Codec';
    844518469 {ETV2} : result := 'eTreppid Video Codec';
   1129731141 {ETVC} : result := 'eTreppid Video Codec';
   1347046470 {FLJP} : result := 'Field Encoded Motion JPEG (Targa emulation)';
   1096241734 {FRWA} : result := 'Darim Vision Forward Motion JPEG with Alpha-channel';
   1146573382 {FRWD} : result := 'Darim Vision Forward Motion JPEG';
   1415008838 {FRWT} : result := 'Darim Vision Forward Motion JPEG';
   1431786054 {FRWU} : result := 'Darim Vision Forward Uncompressed';
    826693190 {FVF1} : result := 'Fractal Video Frame';
   1464227398 {FVFW} : result := 'ff MPEG-4 based on XviD codec';
   1465535559 {GLZW} : result := 'Motion LZW by gabest@freemail.hu';
   1195724871 {GPEG} : result := 'Motion JPEG by gabest@freemail.hu (with floating point)';
   1414289223 {GWLT} : result := 'Microsoft Greyscale WLT DIB';
    808858184 {H260} : result := 'H.260';
    825635400 {H261} : result := 'H.261';
    842412616 {H262} : result := 'H.262';
    859189832 {H263} : result := 'Intel ITU H.263';
    875967048 {H264} : result := 'H.264';
    892744264 {H265} : result := 'H.265';
    909521480 {H266} : result := 'H.266';
    926298696 {H267} : result := 'H.267';
    943075912 {H268} : result := 'H.268';
    959853128 {H269} : result := 'H.263 for POTS-based videoconferencing';
   1431914056 {HFYU} : result := 'Huffman Lossless Codec YUV and RGB formats (with Alpha-channel)';
   1380142408 {HMCR} : result := 'Rendition Motion Compensation Format';
   1381125448 {HMRR} : result := 'Rendition Motion Compensation Format';
    859189833 {I263} : result := 'Intel ITU H.263';
    808596553 {I420} : result := 'Intel Indeo 4 H.263';
      5128521 {IAN } : result := 'Indeo 4 (RDX) Codec';
   1398161737 {IAVS} : result := 'interleaved audio and video stream';
   1112294217 {ICLB} : result := 'CellB Videoconferencing Codec';
   1380927305 {IGOR} : result := 'Power DVD';
   1196444233 {IJPG} : result := 'Intergraph JPEG';
   1129729097 {ILVC} : result := 'Intel Layered Video';
   1381387337 {ILVR} : result := 'ITU H.263+ Codec';
   1447317577 {IPDV} : result := 'Giga AVI DV Codec';
    825381449 {IR21} : result := 'Intel Indeo 2.1';
   1463898697 {IRAW} : result := 'Intel YUV Uncompressed';
   1448695113 {IUYV} : result := 'Interlaced version of UYVY (line order 0, 2, 4,....,1, 3, 5....)';
    808670793 {IV30} : result := 'Intel Indeo Video 3';
    825448009 {IV31} : result := 'Intel Indeo Video 3.1';
    842225225 {IV32} : result := 'Intel Indeo Video 3.2';
    859002441 {IV33} : result := 'Intel Indeo Video 3.3';
    875779657 {IV34} : result := 'Intel Indeo Video 3.4';
    892556873 {IV35} : result := 'Intel Indeo Video 3.5';
    909334089 {IV36} : result := 'Intel Indeo Video 3.6';
    926111305 {IV37} : result := 'Intel Indeo Video 3.7';
    942888521 {IV38} : result := 'Intel Indeo Video 3.8';
    959665737 {IV39} : result := 'Intel Indeo Video 3.9';
    808736329 {IV40} : result := 'Intel Indeo Video 4.0';
    825513545 {IV41} : result := 'Intel Indeo Video 4.1';
    842290761 {IV42} : result := 'Intel Indeo Video 4.2';
    859067977 {IV43} : result := 'Intel Indeo Video 4.3';
    875845193 {IV44} : result := 'Intel Indeo Video 4.4';
    892622409 {IV45} : result := 'Intel Indeo Video 4.5';
    909399625 {IV46} : result := 'Intel Indeo Video 4.6';
    926176841 {IV47} : result := 'Intel Indeo Video 4.7';
    942954057 {IV48} : result := 'Intel Indeo Video 4.8';
    959731273 {IV49} : result := 'Intel Indeo Video 4.9';
    808801865 {IV50} : result := 'Intel Indeo Video 5.0 Wavelet';
    825514313 {IY41} : result := 'Interlaced version of Y41P (line order 0, 2, 4,....,1, 3, 5....)';
    827677001 {IYU1} : result := '12 bit format used in mode 2 of the IEEE 1394 Digital Camera 1.04 spec';
    844454217 {IYU2} : result := '24 bit format used in mode 2 of the IEEE 1394 Digital Camera 1.04 spec';
   1448433993 {IYUV} : result := 'Intel Indeo iYUV 4:2:0';
   1195724874 {JPEG} : result := 'Still Image JPEG DIB';
   1279742026 {JPGL} : result := 'DIVIO JPEG Light for WebCams';
   1129729355 {KMVC} : result := 'Karl Morton Video Codec';
   1145128268 {LEAD} : result := 'LEAD Video Codec';
   1196444236 {LJPG} : result := 'LEAD Motion JPEG Codec';
   1297503052 {LSVM} : result := 'Vianet Lighting Strike Vmail (Streaming)';
    825635405 {M261} : result := 'Microsoft H.261';
    859189837 {M263} : result := 'Microsoft H.263';
    844313677 {M4S2} : result := 'Microsoft MPEG-4 (hacked MS MPEG-4)';
    842089293 {MC12} : result := 'ATI Motion Compensation Format';
   1296122701 {MCAM} : result := 'ATI Motion Compensation Format';
   1146504269 {MDVD} : result := 'Alex MicroDVD Video (hacked MS MPEG-4)';
   1127369293 {MJ2C} : result := 'Morgan Multimedia JPEG2000 Compression';
   1095780941 {MJPA} : result := 'Pinnacle Motion JPEG with Alpha-channel';
   1112558157 {MJPB} : result := 'Motion JPEG codec';
   1196444237 {MJPG} : result := 'IBM Motion JPEG including Huffman Tables';
   1397050701 {MMES} : result := 'Matrox MPEG-2 I-frame';
    842289229 {MP42} : result := 'Microsoft MPEG-4 V2';
    859066445 {MP43} : result := 'Microsoft MPEG-4 V3';
   1395937357 {MP4S} : result := 'Microsoft MPEG-4 (hacked MS MPEG-4)';
   1446269005 {MP4V} : result := 'Microsoft MPEG-4 (hacked MS MPEG-4)';
   1195724877 {MPEG} : result := 'Chromatic MPEG 1 Video I Frame';
    826757197 {MPG1} : result := 'FFmpeg-1';
    843534413 {MPG2} : result := 'FFmpeg-1';
    860311629 {MPG3} : result := 'Same as Low motion DivX MPEG-4';
    877088845 {MPG4} : result := 'Microsoft MPEG-4 V1';
   1229410381 {MPGI} : result := 'Sigma Design MPEG-1 I-frame';
   1196314701 {MPNG} : result := 'Motion PNG codec';
   1094931021 {MRCA} : result := 'FAST Multimedia MR Codec';
   1162629709 {MRLE} : result := 'Microsoft Run Length Encoding';
    827544397 {MSS1} : result := 'Windows Screen Video';
   1129730893 {MSVC} : result := 'Microsoft Video 1';
   1213879117 {MSZH} : result := 'Lossless codec (ZIP compression)';
    827872333 {MTX1} : result := 'Matrox codec';
    844649549 {MTX2} : result := 'Matrox codec';
    861426765 {MTX3} : result := 'Matrox codec';
    878203981 {MTX4} : result := 'Matrox codec';
    894981197 {MTX5} : result := 'Matrox codec';
    911758413 {MTX6} : result := 'Matrox codec';
    928535629 {MTX7} : result := 'Matrox codec';
    945312845 {MTX8} : result := 'Matrox codec';
    962090061 {MTX9} : result := 'Matrox codec';
    827742029 {MWV1} : result := 'Aware Motion Wavelets';
   1230389582 {NAVI} : result := 'nAVI video codec (hacked MS MPEG-4)';
    808473678 {NT00} : result := 'NewTek LigtWave HDTV YUV with Alpha-channel';
    827216974 {NTN1} : result := 'Nogatech Video Compression 1';
    827741518 {NUV1} : result := 'NuppelVideo';
    810767950 {NVS0} : result := 'Nvidia texture compression format';
    827545166 {NVS1} : result := 'Nvidia texture compression format';
    844322382 {NVS2} : result := 'Nvidia texture compression format';
    861099598 {NVS3} : result := 'Nvidia texture compression format';
    877876814 {NVS4} : result := 'Nvidia texture compression format';
    894654030 {NVS5} : result := 'Nvidia texture compression format';
    810833486 {NVT0} : result := 'Nvidia texture compression format';
    827610702 {NVT1} : result := 'Nvidia texture compression format';
    844387918 {NVT2} : result := 'Nvidia texture compression format';
    861165134 {NVT3} : result := 'Nvidia texture compression format';
    877942350 {NVT4} : result := 'Nvidia texture compression format';
    894719566 {NVT5} : result := 'Nvidia texture compression format';
   1129727056 {PDVC} : result := 'Panasonic DV codec';
   1448494928 {PGVV} : result := 'Radius Video Vision Telecast (adaptive JPEG)';
   1330464848 {PHMO} : result := 'Photomotion';
    827148624 {PIM1} : result := 'Pegasus Imaging codec';
    843925840 {PIM2} : result := 'Pegasus Imaging codec';
   1246579024 {PIMJ} : result := 'Pegasus Imaging PICvideo Lossless JPEG';
   1514493520 {PVEZ} : result := 'Horizons Technology PowerEZ codec';
   1296914000 {PVMM} : result := 'PacketVideo Corporation MPEG-4';
    844584528 {PVW2} : result := 'Pegasus Imaging Wavelet 2000';
    808333649 {Q1.0} : result := 'Q-Team QPEG 1.0';
   1195724881 {QPEG} : result := 'Q-Team QPEG 1.1';
   1363497041 {QPEQ} : result := 'Q-Team QPEG 1.1';
      5718354 {RAW } : result := 'Full Frames (Uncompressed)';
      4343634 {RGB } : result := 'Full Frames (Uncompressed)';
   1094862674 {RGBA} : result := 'Raw RGB with alpha';
   1413629778 {RGBT} : result := 'Uncompressed RGB with transparency';
    876956754 {RLE4} : result := 'Run length encoded 4bpp RGB image';
    944065618 {RLE8} : result := 'Run length encoded 8bpp RGB image';
      4541522 {RLE } : result := 'Raw RGB with arbitrary sample packing within a pixel';
    877677906 {RMP4} : result := 'REALmagic MPEG-4 Video Codec';
   1096437842 {RPZA} : result := 'Apple Video 16 bit "road pizza"';
    825381970 {RT21} : result := 'Intel Real Time Video 2.1';
    809784658 {RUD0} : result := 'Rududu video codec';
    808539730 {RV10} : result := 'RealVideo codec';
    858871378 {RV13} : result := 'RealVideo codec';
    808605266 {RV20} : result := 'RealVideo G2';
    808670802 {RV30} : result := 'RealVideo 8';
      5789266 {RVX } : result := 'Intel RDX';
    842150995 {S422} : result := 'VideoCap C210 YUV Codec';
   1128481875 {SDCC} : result := 'Sun Digital Camera Codec';
   1129137747 {SFMC} : result := 'Crystal Net SFM Codec';
   1196444243 {SJPG} : result := 'White Pine (ex Paradigm Matrix) Motion JPEG';
      4410707 {SMC } : result := 'Apple Graphics (SMC) codec (256 color)';
   1129532755 {SMSC} : result := 'Radius proprietary codec';
   1146309971 {SMSD} : result := 'Radius proprietary codec';
   1448299859 {SMSV} : result := 'WorldConnect Wavelet Streaming Video';
   1195987027 {SPIG} : result := 'Radius Spigot';
   1129074771 {SPLC} : result := 'Splash Studios ACM Audio Codec';
    844779859 {SQZ2} : result := 'Microsoft VXTreme Video Codec V2';
   1096176723 {STVA} : result := 'ST CMOS Imager Data (Bayer)';
   1112953939 {STVB} : result := 'ST CMOS Imager Data (Nudged Bayer)';
   1129731155 {STVC} : result := 'ST CMOS Imager Data (Bunched)';
   1482052691 {STVX} : result := 'ST CMOS Imager Data (Extended)';
   1498829907 {STVY} : result := 'ST CMOS Imager Data (Extended with Correction Data)';
    808539731 {SV10} : result := 'Sorenson Media Video R1';
    827414099 {SVQ1} : result := 'Sorenson Video (Apple Quicktime 3)';
    860968531 {SVQ3} : result := 'Sorenson Video 3 (Apple Quicktime 5)';
    808596564 {T420} : result := 'Toshiba YUV 4:2:0';
   1397574740 {TLMS} : result := 'TeraLogic Motion Infraframe Codec A';
   1414745172 {TLST} : result := 'TeraLogic Motion Infraframe Codec B';
    808602964 {TM20} : result := 'Duck TrueMotion 2.0';
   1093815636 {TM2A} : result := 'Duck TrueMotion Archiver 2.0';
   1479691604 {TM2X} : result := 'Duck TrueMotion 2X';
   1128877396 {TMIC} : result := 'TeraLogic Motion Intraframe Codec 2';
   1414483284 {TMOT} : result := 'TrueMotion Video Compression';
    808604244 {TR20} : result := 'Duck TrueMotion RT 2.0';
   1128485716 {TSCC} : result := 'TechSmith Screen Capture Codec';
    808539732 {TV10} : result := 'Tecomac Low-Bit Rate Codec';
   1246582356 {TVMJ} : result := 'Field Encoded Motion JPEG (Targa emulation)';
   1311791444 {TY0N} : result := 'Trident Decompression Driver';
   1127373140 {TY2C} : result := 'Trident Decompression Driver';
   1311922516 {TY2N} : result := 'Trident Decompression Driver';
    859189845 {U263} : result := 'UB Video StreamForce H.263';
   1146045269 {UCOD} : result := 'ClearVideo (fractal compression-based codec)';
   1230261333 {ULTI} : result := 'IBM Corp. Ultimotion';
   1447975253 {UYNV} : result := 'A direct copy of UYVY registered by NVidia to work around problems in some old codecs which did not like hardware which offered more than 2 UYVY surfaces';
   1347836245 {UYVP} : result := 'YCbCr 4:2:2 extended precision 10-bits per component in U0Y0V0Y1 order';
   1498831189 {UYVY} : result := 'YUV 4:2:2 (Y sample at every pixel, U and V sampled at every second pixel horizontally on each line)';
    825635414 {V261} : result := 'Lucent VX2000S';
    842150998 {V422} : result := 'Vitec Multimedia YUV 4:2:2 as for UYVY but with different component ordering within the u_int32 macropixel';
    892679766 {V655} : result := 'Vitec Multimedia 16 bit YUV 4:2:2 (6:5:5) format';
    827474774 {VCR1} : result := 'ATI VCR 1.0';
    844251990 {VCR2} : result := 'ATI VCR 2.0 (MPEG YV12)';
    861029206 {VCR3} : result := 'ATI VCR 3.0';
    877806422 {VCR4} : result := 'ATI VCR 4.0';
    894583638 {VCR5} : result := 'ATI VCR 5.0';
    911360854 {VCR6} : result := 'ATI VCR 6.0';
    928138070 {VCR7} : result := 'ATI VCR 7.0';
    944915286 {VCR8} : result := 'ATI VCR 8.0';
    961692502 {VCR9} : result := 'ATI VCR 9.0';
   1413694550 {VDCT} : result := 'Video Maker Pro DIB';
   1297040470 {VDOM} : result := 'VDOnet VDOWave';
   1464812630 {VDOW} : result := 'VDOLive (H.263)';
   1515471958 {VDTZ} : result := 'Darim Vision VideoTizer YUV';
   1481656150 {VGPX} : result := 'Alaris VGPixel Codec';
   1396984150 {VIDS} : result := 'Vitec Multimedia YUV 4:2:2 codec';
   1346783574 {VIFP} : result := 'Virtual Frame API codec (VFAPI)';
    827738454 {VIV1} : result := 'Vivo H.263';
    844515670 {VIV2} : result := 'Vivo H.263';
   1331054934 {VIVO} : result := 'Vivo H.263';
   1280854358 {VIXL} : result := 'miroVideo XL';
    827739222 {VLV1} : result := 'VideoLogic codec';
    808669270 {VP30} : result := 'On2 (ex Duck TrueMotion) VP3';
    825446486 {VP31} : result := 'On2 (ex Duck TrueMotion) VP3';
   1261525078 {VX1K} : result := 'Lucent VX1000S Video Codec';
   1261590614 {VX2K} : result := 'Lucent VX2000S Video Codec';
   1347639382 {VXSP} : result := 'Lucent VX1000SP Video Codec';
   1129726551 {WBVC} : result := 'Winbond W9960 codec';
   1296123991 {WHAM} : result := 'Microsoft Video 1';
   1481525591 {WINX} : result := 'Winnov Software Compression';
   1196444247 {WJPG} : result := 'Winbond JPEG';
    827739479 {WMV1} : result := 'Windows Media Video 7';
    844516695 {WMV2} : result := 'Windows Media Video 8';
    861293911 {WMV3} : result := 'Windows Media Video 9';
    827739735 {WNV1} : result := 'WinNow Videum Hardware Compression';
    859189848 {X263} : result := 'Xirlink H.263';
    810962008 {XLV0} : result := 'NetXL Inc. XL Video Decoder';
   1196445016 {XMPG} : result := 'XING MPEG (I frame only)';
   1145656920 {XVID} : result := 'XviD MPEG-4 codec';
    825307737 {Y211} : result := 'Packed YUV format with Y sampled at every second pixel across each line and U and V sampled at every fourth pixel';
    825308249 {Y411} : result := 'YUV 4:1:1 Packed';
   1110520921 {Y41B} : result := 'YUV 4:1:1 Planar';
   1345401945 {Y41P} : result := 'Conexant (ex Brooktree) YUV 4:1:1 Raw';
   1412510809 {Y41T} : result := 'Format as for Y41P but the lsb of each Y component is used to signal pixel transparency';
    842151001 {Y422} : result := 'Direct copy of UYVY as used by ADS Technologies Pyro WebCam firewire camera';
   1110586457 {Y42B} : result := 'YUV 4:2:2 Planar';
   1412576345 {Y42T} : result := 'Format as for UYVY but the lsb of each Y component is used to signal pixel transparency';
    808466521 {Y800} : result := 'Simple grayscale video';
    536885337 {Y8  } : result := 'Simple grayscale video';
    842089305 {YC12} : result := 'Intel YUV12 Codec';
   1447974233 {YUNV} : result := 'A direct copy of YUY2 registered by NVidia to work around problems in some old codecs which did not like hardware which offered more than 2 YUY2 surfaces';
    945182041 {YUV8} : result := 'Winnov Caviar YUV8';
    961959257 {YUV9} : result := 'Intel YUV9';
   1347835225 {YUVP} : result := 'YCbCr 4:2:2 extended precision 10-bits per component in Y0U0Y1V0 order';
    844715353 {YUY2} : result := 'YUV 4:2:2 as for UYVY but with different component ordering within the u_int32 macropixel';
   1448695129 {YUYV} : result := 'Canopus YUV format';
    842094169 {YV12} : result := 'ATI YVU12 4:2:0 Planar';
    961893977 {YVU9} : result := 'Brooktree YVU9 Raw (YVU9 Planar)';
   1431918169 {YVYU} : result := 'YUV 4:2:2 as for UYVY but with different component ordering within the u_int32 macropixel';
   1112099930 {ZLIB} : result := 'Lossless codec (ZIP compression)';
   1195724890 {ZPEG} : result := 'Metheus Video Zipper';
else
   result := W_STR_07;