如何编程抓取徒手绘制区域的图象(100分)

各位高手：
许多抓图软件都能抓取徒手绘制区域的图象，它的思路大概是这样的：先把整个桌面图象拷贝到一个最大化Form的image1上(image1的范围属性设为整个窗口客户区)，然后在image1上徒手绘制任意区域。关于在image1上徒手绘制任意区域并截取相应区域图象，谁能给正确思路及代码？？？圆，矩形及其他规则图形呢？？？

徒手绘制?? 什么意思？ 用鼠标绘图吗？

就是随手画啊 鼠标画

画图是在画布上。抓取画布区域

是啊，怎样抓取啊？？？

我也想知道,

各位高手：

象HyperSnap那样的抓图软件能设置要截取的窗口的宽和高的像素大小（可以大于屏幕的像素大小），并能截取该窗口完整的图像，怎样编程实现啊？？？

另, 像snapit那样的抓图软件能进行DOS截屏, 又怎样编程实现呢？？？

那是directshow显示的，普通的HDC抓不到的

问题: 视频截图！！ ( 积分: 200 )
分类: 多媒体

来自: 大愚, 时间: 2004-03-17 22:07:00, ID: 2508070
我现在用DSPACK2.31，里面有两个DEMO,PlayVideoCap和videocap，我想把PlayVideoCap里的截图功能加到videocap中，但好像并不好用，还有什么办法截取VideoWindow中的视频画面？

来自: longjiang, 时间: 2004-03-17 22:16:57, ID: 2508080
我有办法，不过要明天告诉你，今天不行了，不知道是不是这个你试试，
如果简单的截图这个就可以了：
SampleGrabber.GetBitmap(image1.Picture.Bitmap ) ;

来自: 刀剑如梦, 时间: 2004-03-17 23:33:54, ID: 2508160
关注此贴,可以截图动态的视频图像?

来自: fei_l, 时间: 2004-03-18 1:24:40, ID: 2508219
这是以前写的一段电子摄象的程序， 现在找出来，应该可以满足你的要求。
视频截图代码：
var
MyRect : TRect;
SRect:TRect;
begin
VideoCap1.SingleImageFile:= 'capture.bmp'; // 指定捕捉的图片文件名
VideoCap1.GrabFrameNoStop;
if not VideoCap1.SaveAsDib then MessageDlg('不能截图！',mtError,[mbOK],0);
if FileExists('Capture.bmp') then
begin // edit1、edit2 为截取的起始位置,调整这两个数值保证与视频窗口看到的一样
image1.Picture.LoadFromFile('Capture.bmp');
myrect:=rect(0,0,image1.width,image1.Height);
SRect:=rect(strtoint(edit1.Text),strtoint(edit2.Text),image1.width+strtoint(edit1.text),image1.height+strtoint(edit2.text));
image2.Canvas.CopyRect(myrect,image1.Canvas,SRect);
image2.Picture.SaveToFile('xp.bmp');
end;
end;


来自: 大愚, 时间: 2004-03-18 9:06:17, ID: 2508374
To:longjiang 这个方法就是PlayVideoCap里的方法，但是我试了不行，不知道为什么，不知是不是因为录像的原因，但我又不知道怎么不让它录像，可能禁止掉就好了。你要是还有办法，请再伸一次援手吧。
To:fei_l 你的VideoCap1是什么组件啊？你的方法倒让我想起可以截全屏的，再把画面抠下来，但不太方便，也有可能会出错，还有更好的方法吗？

来自: app2001, 时间: 2004-03-18 12:04:11, ID: 2508962
示范如何撷取视频画面及播放视频画面的例子
Basic Video capture and play
============================

Freeware
version 2.0 - Sep 30, 1998
Copyright (c) 1998, Wolfgang Krug

----------------------------------------------------------------------------

CONTENTS
========

1. Target platforms
2. Description
3. Installation
4. Read this
5. Known bugs & problems
6. More informations
7. Contact

----------------------------------------------------------------------------

1. Target platforms
===================

Delphi 2.0
Delphi 3.0
Delphi 4.0


2. Description
==============

This program shows how to capture and replay video
using the cap_ and mci_ functions of the
video for windows SDK.
Uses avifil32.dll and avicap32.dll


3. Installation
===============

Nothing to install. Compile and run the program.


4. Read this
============

WARNING! THE CODE IS PROVIDED AS IS WITH NO GUARANTEES OF ANY KIND!
USE THIS AT YOUR OWN RISK - YOU ARE THE ONLY PERSON RESPONSIBLE FOR
ANY DAMAGE THIS CODE MAY CAUSE - YOU HAVE BEEN WARNED!


5. Known bugs & problems
========================

Nothing up to now!


6. More informations
====================
我刚弄到的，自己没看明白，你要的话，就留我一个EMAIL

来自: Genl, 时间: 2004-03-18 12:36:54, ID: 2509025
装DX9.0 打开那个什么Enable Captrue Screen
后 SampleGraber就能抓了

来自: 大愚, 时间: 2004-03-18 13:03:26, ID: 2509079
这好像是用的VFW，不知道怎么用，你要是有delphi的使用方法能告诉我吗？
fzh100@163.com

来自: 大愚, 时间: 2004-03-18 13:06:12, ID: 2509086
To:Genl DX9我装了“Enable Captrue Screen”是在哪里打开？

来自: app2001, 时间: 2004-03-19 10:28:50, ID: 2510791
我发了个给你了

来自: 大愚, 时间: 2004-03-25 10:57:29, ID: 2521180
在视频捕获的时候会出错，死机，无法显示图像，打开源文件，编译的时候说无法找到OLE2.dcu

来自: jemyzhang, 时间: 2004-04-03 18:17:14, ID: 2538436
dspack是没有问题的，可能是你的系统的问题

来自: 大愚, 时间: 2004-04-05 15:59:15, ID: 2541187
有可能吧，但我想应该是我还不会用dspack，在PlayVideoCap的DEMO里，无法看到视频图像的，只看到闪动的杂乱无章的黑色，可以截图，但跟看到的东西是一样的

来自: 大愚, 时间: 2004-04-05 16:44:55, ID: 2541281
我用的视频采集卡有两个AV输入，一个S-端子输入，dspack能控制吗？还有其它的控件吗？

来自: 大愚, 时间: 2004-04-15 18:52:08, ID: 2561703
没人知道吗？

来自: app2001, 时间: 2004-04-15 21:21:11, ID: 2561982
这个你再看看中不中，刚下载的，不过网址忘了，就全贴了上来，长了一些，你看看吧
uses
VfW { from download 这个单元在下面};

function GrabAVIFrame(avifn: string; iFrameNumber: Integer; ToFileName: TFileName): Boolean;
var
Error: Integer;
pFile: PAVIFile;
AVIStream: PAVIStream;
gapgf: PGETFRAME;
lpbi: PBITMAPINFOHEADER;
bits: PChar;
hBmp: HBITMAP;
AviInfo: TAVIFILEINFOW;
sError: string;
TmpBmp: TBitmap;
DC_Handle: HDC;
begin
Result := False;
// Initialize the AVIFile library.
AVIFileInit;

// The AVIFileOpen function opens an AVI file
Error := AVIFileOpen(pFile, PChar(avifn), 0, nil);
if Error <> 0 then
begin
AVIFileExit;
case Error of
AVIERR_BADFORMAT: sError := 'The file couldn''t be read';
AVIERR_MEMORY: sError := 'The file could not be opened because of insufficient memory.';
AVIERR_FILEREAD: sError := 'A disk error occurred while reading the file.';
AVIERR_FILEOPEN: sError := 'A disk error occurred while opening the file.';
end;
ShowMessage(sError);
Exit;
end;

// AVIFileInfo obtains information about an AVI file
if AVIFileInfo(pFile, @AVIINFO, SizeOf(AVIINFO)) <> AVIERR_OK then
begin
// Clean up and exit
AVIFileRelease(pFile);
AVIFileExit;
Exit;
end;

// Show some information about the AVI
Form1.Memo1.Lines.Add('AVI Width : ' + IntToStr(AVIINFO.dwWidth));
Form1.Memo1.Lines.Add('AVI Height : ' + IntToStr(AVIINFO.dwHeight));
Form1.Memo1.Lines.Add('AVI Length : ' + IntToStr(AVIINFO.dwLength));

// Open a Stream from the file
Error := AVIFileGetStream(pFile, AVIStream, streamtypeVIDEO, 0);
if Error <> AVIERR_OK then
begin
// Clean up and exit
AVIFileRelease(pFile);
AVIFileExit;
Exit;
end;

// Prepares to decompress video frames
gapgf := AVIStreamGetFrameOpen(AVIStream, nil);
if gapgf = nil then
begin
AVIStreamRelease(AVIStream);
AVIFileRelease(pFile);
AVIFileExit;
Exit;
end;

// Read current Frame
// AVIStreamGetFrame Returns the address of a decompressed video frame
lpbi := AVIStreamGetFrame(gapgf, iFrameNumber);
if lpbi = nil then
begin
AVIStreamGetFrameClose(gapgf);
AVIStreamRelease(AVIStream);
AVIFileRelease(pFile);
AVIFileExit;
Exit;
end;

// Show number of frames:
Form1.Memo1.Lines.Add(Format('Framstart: %d FrameEnd: %d',
[AVIStreamStart(AVIStream), AVIStreamEnd(AVIStream)]));

TmpBmp := TBitmap.Create;
try
TmpBmp.Height := lpbi.biHeight;
TmpBmp.Width := lpbi.biWidth;
bits := Pointer(Integer(lpbi) + SizeOf(TBITMAPINFOHEADER));

DC_Handle := CreateDC('Display', nil, nil, nil);
try
hBmp := CreateDIBitmap(DC_Handle, // handle of device context
lpbi^, // address of bitmap size and format data
CBM_INIT, // initialization flag
bits, // address of initialization data
PBITMAPINFO(lpbi)^, // address of bitmap color-format data
DIB_RGB_COLORS); // color-data usage
finally
DeleteDC(DC_Handle);
end;

TmpBmp.Handle := hBmp;
AVIStreamGetFrameClose(gapgf);
AVIStreamRelease(AVIStream);
AVIFileRelease(pfile);
AVIFileExit;
try
TmpBmp.SaveToFile(ToFileName);
Result := True;
except
end;
finally
TmpBmp.Free;
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
// Extract Frame 3 from AVI file
GrabAVIFrame('C:/Test.avi', 3, 'c:/avifram.bmp');
end;
／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／／
unit VFW;

interface

uses
Windows,
MMSystem,
Messages,
CommDlg,
ActiveX;

{== General ==================================================================}

type
PDWORD = ^DWORD;
PLONG = PDWORD;
UDWORD = DWORD;
PVOID = Pointer;
int = Integer;

{-- Returns version of VFW ---------------------------------------------------}

function VideoForWindowsVersion: DWord; pascal;

{-- Call these to start stop using VfW from your app -------------------------}

{ TODO: Where are these functions? }

// function InitVFW: DWORD; stdcall;
// function TermVFW: DWORD; stdcall;

{-- Macros -------------------------------------------------------------------}

function MKFOURCC(ch0, ch1, ch2, ch3: Char): FOURCC;

{== COMPMAN - Installable Compression Manager ================================}

const
ICVERSION = $0104 ;

type
HIC = THandle; // Handle to an Installable Compressor

//
// this code in biCompression means the DIB must be accesed via
// 48 bit pointers! using *ONLY* the selector given.
//
const
BI_1632 = $32333631; // '1632'

function mmioFOURCC(ch0, ch1, ch2, ch3: Char): FOURCC;

type
TWOCC = Word;

function aviTWOCC(ch0, ch1: Char): TWOCC;

const
ICTYPE_VIDEO = $63646976; // mmioFOURCC('v', 'i', 'd', 'c')
ICTYPE_AUDIO = $63647561; // mmioFOURCC('a', 'u', 'd', 'c')

const
ICERR_OK = 0 ;
ICERR_DONTDRAW = 1 ;
ICERR_NEWPALETTE = 2 ;
ICERR_GOTOKEYFRAME = 3 ;
ICERR_STOPDRAWING = 4 ;

ICERR_UNSUPPORTED = -1 ;
ICERR_BADFORMAT = -2 ;
ICERR_MEMORY = -3 ;
ICERR_INTERNAL = -4 ;
ICERR_BADFLAGS = -5 ;
ICERR_BADPARAM = -6 ;
ICERR_BADSIZE = -7 ;
ICERR_BADHANDLE = -8 ;
ICERR_CANTUPDATE = -9 ;
ICERR_ABORT = -10 ;
ICERR_ERROR = -100 ;
ICERR_BADBITDEPTH = -200 ;
ICERR_BADIMAGESIZE = -201 ;

ICERR_CUSTOM = -400 ; // errors less than ICERR_CUSTOM...

{-- Values for dwFlags of ICOpen() -------------------------------------------}

ICMODE_COMPRESS = 1 ;
ICMODE_DECOMPRESS = 2 ;
ICMODE_FASTDECOMPRESS = 3 ;
ICMODE_QUERY = 4 ;
ICMODE_FASTCOMPRESS = 5 ;
ICMODE_DRAW = 8 ;

{-- Flags for AVI file index -------------------------------------------------}

AVIIF_LIST = $00000001 ;
AVIIF_TWOCC = $00000002 ;
AVIIF_KEYFRAME = $00000010 ;

{-- quality flags ------------------------------------------------------------}

ICQUALITY_LOW = 0 ;
ICQUALITY_HIGH = 10000 ;
ICQUALITY_DEFAULT = -1 ;

{-----------------------------------------------------------------------------}

ICM_USER = (DRV_USER+$0000) ;

ICM_RESERVED_LOW = (DRV_USER+$1000) ;
ICM_RESERVED_HIGH = (DRV_USER+$2000) ;
ICM_RESERVED = ICM_RESERVED_LOW ;

{-- Messages -----------------------------------------------------------------}

ICM_GETSTATE = (ICM_RESERVED+0) ; // Get compressor state
ICM_SETSTATE = (ICM_RESERVED+1) ; // Set compressor state
ICM_GETINFO = (ICM_RESERVED+2) ; // Query info about the compressor

ICM_CONFIGURE = (ICM_RESERVED+10); // show the configure dialog
ICM_ABOUT = (ICM_RESERVED+11); // show the about box

ICM_GETDEFAULTQUALITY = (ICM_RESERVED+30); // get the default value for quality
ICM_GETQUALITY = (ICM_RESERVED+31); // get the current value for quality
ICM_SETQUALITY = (ICM_RESERVED+32); // set the default value for quality

ICM_SET = (ICM_RESERVED+40); // Tell the driver something
ICM_GET = (ICM_RESERVED+41); // Ask the driver something

{-- Constants for ICM_SET: ---------------------------------------------------}

ICM_FRAMERATE = $526D7246; // mmioFOURCC('F','r','m','R')
ICM_KEYFRAMERATE = $5279654B; // mmioFOURCC('K','e','y','R')

{-- ICM specific messages ----------------------------------------------------}

ICM_COMPRESS_GET_FORMAT = (ICM_USER+4) ; // get compress format or size
ICM_COMPRESS_GET_SIZE = (ICM_USER+5) ; // get output size
ICM_COMPRESS_QUERY = (ICM_USER+6) ; // query support for compress
ICM_COMPRESS_BEGIN = (ICM_USER+7) ; // begin a series of compress calls.
ICM_COMPRESS = (ICM_USER+8) ; // compress a frame
ICM_COMPRESS_END = (ICM_USER+9) ; // end of a series of compress calls.

ICM_DECOMPRESS_GET_FORMAT = (ICM_USER+10) ; // get decompress format or size
ICM_DECOMPRESS_QUERY = (ICM_USER+11) ; // query support for dempress
ICM_DECOMPRESS_BEGIN = (ICM_USER+12) ; // start a series of decompress calls
ICM_DECOMPRESS = (ICM_USER+13) ; // decompress a frame
ICM_DECOMPRESS_END = (ICM_USER+14) ; // end a series of decompress calls
ICM_DECOMPRESS_SET_PALETTE = (ICM_USER+29) ; // fill in the DIB color table
ICM_DECOMPRESS_GET_PALETTE = (ICM_USER+30) ; // fill in the DIB color table

ICM_DRAW_QUERY = (ICM_USER+31) ; // query support for dempress
ICM_DRAW_BEGIN = (ICM_USER+15) ; // start a series of draw calls
ICM_DRAW_GET_PALETTE = (ICM_USER+16) ; // get the palette needed for drawing
ICM_DRAW_START = (ICM_USER+18) ; // start decompress clock
ICM_DRAW_STOP = (ICM_USER+19) ; // stop decompress clock
ICM_DRAW_END = (ICM_USER+21) ; // end a series of draw calls
ICM_DRAW_GETTIME = (ICM_USER+32) ; // get value of decompress clock
ICM_DRAW = (ICM_USER+33) ; // generalized &quot;render&quot; message
ICM_DRAW_WINDOW = (ICM_USER+34) ; // drawing window has moved or hidden
ICM_DRAW_SETTIME = (ICM_USER+35) ; // set correct value for decompress clock
ICM_DRAW_REALIZE = (ICM_USER+36) ; // realize palette for drawing
ICM_DRAW_FLUSH = (ICM_USER+37) ; // clear out buffered frames
ICM_DRAW_RENDERBUFFER = (ICM_USER+38) ; // draw undrawn things in queue

ICM_DRAW_START_PLAY = (ICM_USER+39) ; // start of a play
ICM_DRAW_STOP_PLAY = (ICM_USER+40) ; // end of a play

ICM_DRAW_SUGGESTFORMAT = (ICM_USER+50) ; // Like ICGetDisplayFormat
ICM_DRAW_CHANGEPALETTE = (ICM_USER+51) ; // for animating palette

ICM_GETBUFFERSWANTED = (ICM_USER+41) ; // ask about prebuffering

ICM_GETDEFAULTKEYFRAMERATE = (ICM_USER+42) ; // get the default value for key frames

ICM_DECOMPRESSEX_BEGIN = (ICM_USER+60) ; // start a series of decompress calls
ICM_DECOMPRESSEX_QUERY = (ICM_USER+61) ; // start a series of decompress calls
ICM_DECOMPRESSEX = (ICM_USER+62) ; // decompress a frame
ICM_DECOMPRESSEX_END = (ICM_USER+63) ; // end a series of decompress calls

ICM_COMPRESS_FRAMES_INFO = (ICM_USER+70) ; // tell about compress to come
ICM_SET_STATUS_PROC = (ICM_USER+72) ; // set status callback

{-----------------------------------------------------------------------------}

type
PICOPEN = ^TICOPEN;
TICOPEN = record
dwSize : DWORD ; // sizeof(ICOPEN)
fccType : DWORD ; // 'vidc'
fccHandler : DWORD ; //
dwVersion : DWORD ; // version of compman opening you
dwFlags : DWORD ; // LOWORD is type specific
dwError : DWORD ; // error return.
pV1Reserved : PVOID ; // Reserved
pV2Reserved : PVOID ; // Reserved
dnDevNode : DWORD ; // Devnode for PnP devices
end;

{-----------------------------------------------------------------------------}

PICINFO = ^TICINFO ;
TICINFO = record
dwSize : DWORD; // sizeof(ICINFO)
fccType : DWORD; // compressor type 'vidc' 'audc'
fccHandler : DWORD; // compressor sub-type 'rle ' 'jpeg' 'pcm '
dwFlags : DWORD; // flags LOWORD is type specific
dwVersion : DWORD; // version of the driver
dwVersionICM : DWORD; // version of the ICM used
//
// under Win32, the driver always returns UNICODE strings.
//
szName : array[0..15] of WideChar ; // short name
szDescription : array[0..127] of WideChar ; // DWORD name
szDriver : array[0..127] of WideChar ; // driver that contains compressor
end;

{-- Flags for the <dwFlags> field of the <ICINFO> structure. -----------------}

const
VIDCF_QUALITY = $0001 ; // supports quality
VIDCF_CRUNCH = $0002 ; // supports crunching to a frame size
VIDCF_TEMPORAL = $0004 ; // supports inter-frame compress
VIDCF_COMPRESSFRAMES = $0008 ; // wants the compress all frames message
VIDCF_DRAW = $0010 ; // supports drawing
VIDCF_FASTTEMPORALC = $0020 ; // does not need prev frame on compress
VIDCF_FASTTEMPORALD = $0080 ; // does not need prev frame on decompress
//VIDCF_QUALITYTIME = $0040 ; // supports temporal quality

//VIDCF_FASTTEMPORAL = (VIDCF_FASTTEMPORALC or VIDCF_FASTTEMPORALD)

{-----------------------------------------------------------------------------}

ICCOMPRESS_KEYFRAME = $00000001;

type
PICCOMPRESS = ^TICCOMPRESS;
TICCOMPRESS = record
dwFlags : DWORD; // flags

lpbiOutput : PBITMAPINFOHEADER ; // output format
lpOutput : PVOID ; // output data

lpbiInput : PBITMAPINFOHEADER ; // format of frame to compress
lpInput : PVOID ; // frame data to compress

lpckid : PDWORD ; // ckid for data in AVI file
lpdwFlags : PDWORD; // flags in the AVI index.
lFrameNum : DWORD ; // frame number of seq.
dwFrameSize : DWORD ; // reqested size in bytes. (if non zero)

dwQuality : DWORD ; // quality

// these are new fields

lpbiPrev : PBITMAPINFOHEADER ; // format of previous frame
lpPrev : PVOID ; // previous frame
end;

{-----------------------------------------------------------------------------}

const
ICCOMPRESSFRAMES_PADDING = $00000001 ;

type
TICCompressProc = function(lInput: LPARAM; lFrame: DWORD; lpBits: PVOID; len: DWORD): DWORD; stdcall;

PICCOMPRESSFRAMES = ^TICCOMPRESSFRAMES;
TICCOMPRESSFRAMES = record
dwFlags : DWORD ; // flags

lpbiOutput : PBITMAPINFOHEADER ; // output format
lOutput : LPARAM ; // output identifier

lpbiInput : PBITMAPINFOHEADER ; // format of frame to compress
lInput : LPARAM ; // input identifier

lStartFrame : DWORD ; // start frame
lFrameCount : DWORD ; // # of frames

lQuality : DWORD ; // quality
lDataRate : DWORD ; // data rate
lKeyRate : DWORD ; // key frame rate

dwRate : DWORD ; // frame rate, as always
dwScale : DWORD ;

dwOverheadPerFrame : DWORD ;
dwReserved2 : DWORD ;

GetData : TICCompressProc;
PutData : TICCompressProc;
end;

{-- Messages for Status callback ---------------------------------------------}

const
ICSTATUS_START = 0 ;
ICSTATUS_STATUS = 1 ; // l = % done
ICSTATUS_END = 2 ;
ICSTATUS_ERROR = 3 ; // l = error string (LPSTR)
ICSTATUS_YIELD = 4 ;

type
// return nonzero means abort operation in progress
TICStatusProc = function(lParam: LPARAM; message: UINT; l: DWORD): DWORD; stdcall;

PICSETSTATUSPROC = ^TICSETSTATUSPROC;
TICSETSTATUSPROC = record
dwFlags : DWORD ;
lParam : LPARAM ;
Status : TICStatusProc;
end;

{-----------------------------------------------------------------------------}

const
ICDECOMPRESS_HURRYUP = $80000000 ; // don't draw just buffer (hurry up!)
ICDECOMPRESS_UPDATE = $40000000 ; // don't draw just update screen
ICDECOMPRESS_PREROLL = $20000000 ; // this frame is before real start
ICDECOMPRESS_NULLFRAME = $10000000 ; // repeat last frame
ICDECOMPRESS_NOTKEYFRAME = $08000000 ; // this frame is not a key frame

type
PICDECOMPRESS = ^TICDECOMPRESS;
TICDECOMPRESS = record
dwFlags : DWORD ; // flags (from AVI index...)
lpbiInput : PBITMAPINFOHEADER ; // BITMAPINFO of compressed data
// biSizeImage has the chunk size
lpInput : PVOID ; // compressed data
lpbiOutput : PBITMAPINFOHEADER ; // DIB to decompress to
lpOutput : PVOID ;
ckid : DWORD ; // ckid from AVI file
end;

PICDECOMPRESSEX = ^TICDECOMPRESSEX;
TICDECOMPRESSEX = record

//
// same as ICM_DECOMPRESS
//

dwFlags : DWORD;
lpbiSrc : PBITMAPINFOHEADER; // BITMAPINFO of compressed data
lpSrc : PVOID; // compressed data
lpbiDst : PBITMAPINFOHEADER; // DIB to decompress to
lpDst : PVOID; // output data

//
// new for ICM_DECOMPRESSEX
//

xDst : int ; // destination rectangle
yDst : int ;
dxDst : int ;
dyDst : int ;

xSrc : int ; // source rectangle
ySrc : int ;
dxSrc : int ;
dySrc : int ;
end;

{-----------------------------------------------------------------------------}

const
ICDRAW_QUERY = $00000001 ; // test for support
ICDRAW_FULLSCREEN = $00000002 ; // draw to full screen
ICDRAW_HDC = $00000004 ; // draw to a HDC/HWND
ICDRAW_ANIMATE = $00000008 ; // expect palette animation
ICDRAW_CONTINUE = $00000010 ; // draw is a continuation of previous draw
ICDRAW_MEMORYDC = $00000020 ; // DC is offscreen, by the way
ICDRAW_UPDATING = $00000040 ; // We're updating, as opposed to playing
ICDRAW_RENDER = $00000080 ; // used to render data not draw it
ICDRAW_BUFFER = $00000100 ; // please buffer this data offscreen, we will need to update it

type
PICDRAWBEGIN = ^TICDRAWBEGIN;
TICDRAWBEGIN = record
dwFlags : DWORD ; // flags

hpal : HPALETTE ; // palette to draw with
hwnd : HWND ; // window to draw to
hdc : HDC ; // HDC to draw to

xDst : int ; // destination rectangle
yDst : int ;
dxDst : int ;
dyDst : int ;

lpbi : PBITMAPINFOHEADER ;
// format of frame to draw

xSrc : int ; // source rectangle
ySrc : int ;
dxSrc : int ;
dySrc : int ;

dwRate : DWORD ; // frames/second = (dwRate/dwScale)
dwScale : DWORD ;
end;

{-----------------------------------------------------------------------------}

const
ICDRAW_HURRYUP = $80000000 ; // don't draw just buffer (hurry up!)
ICDRAW_UPDATE = $40000000 ; // don't draw just update screen
ICDRAW_PREROLL = $20000000 ; // this frame is before real start
ICDRAW_NULLFRAME = $10000000 ; // repeat last frame
ICDRAW_NOTKEYFRAME = $08000000 ; // this frame is not a key frame

type
PICDRAW = ^TICDRAW;
TICDRAW = record
dwFlags : DWORD ; // flags
lpFormat : PVOID ; // format of frame to decompress
lpData : PVOID ; // frame data to decompress
cbData : DWORD ;
lTime : DWORD ; // time in drawbegin units (see dwRate and dwScale)
end;

PICDRAWSUGGEST = ^TICDRAWSUGGEST;
TICDRAWSUGGEST = record
lpbiIn : PBITMAPINFOHEADER ; // format to be drawn
lpbiSuggest : PBITMAPINFOHEADER ; // location for suggested format (or NULL to get size)
dxSrc : int ; // source extent or 0
dySrc : int ;
dxDst : int ; // dest extent or 0
dyDst : int ;
hicDecompressor : HIC ; // decompressor you can talk to
end;

{-----------------------------------------------------------------------------}

PICPALETTE = ^TICPALETTE;
TICPALETTE = record
dwFlags : DWORD ; // flags (from AVI index...)
iStart : int ; // first palette to change
iLen : int ; // count of entries to change.
lppe : PPALETTEENTRY ; // palette
end;

{-- ICM function declarations ------------------------------------------------}

function ICInfo(fccType, fccHandler: DWORD; lpicinfo: PICINFO) : BOOL ; stdcall ;
function ICInstall(fccType, fccHandler: DWORD; lParam: LPARAM; szDesc: LPSTR; wFlags: UINT) : BOOL ; stdcall ;
function ICRemove(fccType, fccHandler: DWORD; wFlags: UINT) : BOOL ; stdcall ;
function ICGetInfo(hic: HIC; picinfo: PICINFO; cb: DWORD) : DWORD ; stdcall ;

function ICOpen(fccType, fccHandler: DWORD; wMode: UINT) : HIC ; stdcall ;
function ICOpenFunction(fccType, fccHandler: DWORD; wMode: UINT; lpfnHandler: TFarProc) : HIC ; stdcall ;
function ICClose(hic: HIC) : DWORD; stdcall ;

function ICSendMessage(hic: HIC; msg: UINT; dw1, dw2: DWORD) : DWORD ; stdcall ;

{-- Values for wFlags of ICInstall -------------------------------------------}

const
ICINSTALL_UNICODE = $8000 ;

ICINSTALL_FUNCTION = $0001 ; // lParam is a DriverProc (function ptr)
ICINSTALL_DRIVER = $0002 ; // lParam is a driver name (string)
ICINSTALL_HDRV = $0004 ; // lParam is a HDRVR (driver handle)

ICINSTALL_DRIVERW = $8002 ; // lParam is a unicode driver name

{-- Query macros -------------------------------------------------------------}

ICMF_CONFIGURE_QUERY = $00000001 ;
ICMF_ABOUT_QUERY = $00000001 ;

function ICQueryAbout(hic: HIC): BOOL;
function ICAbout(hic: HIC; hwnd: HWND): DWORD;
function ICQueryConfigure(hic: HIC): BOOL;
function ICConfigure(hic: HIC; hwnd: HWND): DWORD;

{-- Get/Set state macros -----------------------------------------------------}

function ICGetState(hic: HIC; pv: PVOID; cb: DWORD): DWORD;
function ICSetState(hic: HIC; pv: PVOID; cb: DWORD): DWORD;
function ICGetStateSize(hic: HIC): DWORD;

{-- Get value macros ---------------------------------------------------------}

function ICGetDefaultQuality(hic: HIC): DWORD;
function ICGetDefaultKeyFrameRate(hic: HIC): DWORD;

{-- Draw window macro --------------------------------------------------------}

function ICDrawWindow(hic: HIC; prc: PRECT): DWORD;

{== Compression functions ====================================================}

{-- ICCompress() - compress a single frame -----------------------------------}

function ICCompress(
hic : HIC;
dwFlags : DWORD; // flags
lpbiOutput : PBITMAPINFOHEADER; // output format
lpData : PVOID; // output data
lpbiInput : PBITMAPINFOHEADER; // format of frame to compress
lpBits : PVOID; // frame data to compress
lpckid : PDWORD; // ckid for data in AVI file
lpdwFlags : PDWORD; // flags in the AVI index.
lFrameNum : DWORD; // frame number of seq.
dwFrameSize : DWORD; // reqested size in bytes. (if non zero)
dwQuality : DWORD; // quality within one frame
lpbiPrev : PBITMAPINFOHEADER; // format of previous frame
lpPrev : PVOID // previous frame
) : DWORD; cdecl;

{-- ICCompressBegin() - start compression from a source fmt to a dest fmt ----}

function ICCompressBegin(hic: HIC; lpbiInput: PBITMAPINFOHEADER; lpbiOutput: PBITMAPINFOHEADER): DWORD;

{-- ICCompressQuery() - determines if compression from src to dst is supp ----}

function ICCompressQuery(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;

{-- ICCompressGetFormat() - get the output format (fmt of compressed) --------}

// if lpbiOutput is nil return the size in bytes needed for format.

function ICCompressGetFormat(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
function ICCompressGetFormatSize(hic: HIC; lpbi: PBITMAPINFOHEADER): DWORD;

{-- ICCompressSize() - return the maximal size of a compressed frame ---------}

function ICCompressGetSize(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
function ICCompressEnd(hic: HIC): DWORD;

{== Decompression functions ==================================================}

{-- ICDecompress() - decompress a single frame -------------------------------}

function ICDecompress(
hic : HIC;
dwFlags : DWORD; // flags (from AVI index...)
lpbiFormat : PBITMAPINFOHEADER; // BITMAPINFO of compressed data
// biSizeImage has the chunk size
lpData : PVOID; // data
lpbi : PBITMAPINFOHEADER; // DIB to decompress to
lpBits : PVOID
): DWORD; cdecl;

{-- ICDecompressBegin() - start compression from src fmt to a dest fmt -------}

function ICDecompressBegin(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;

{-- ICDecompressQuery() - determines if compression is supported -------------}

function ICDecompressQuery(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;

{-- ICDecompressGetFormat - get the output fmt (fmt of uncompressed data) ----}

// if lpbiOutput is NULL return the size in bytes needed for format.

function ICDecompressGetFormat(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
function ICDecompressGetFormatSize(hic: HIC; lpbi: PBITMAPINFOHEADER): DWORD;

{-- ICDecompressGetPalette() - get the output palette ------------------------}

function ICDecompressGetPalette(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
function ICDecompressSetPalette(hic: HIC; lpbiPalette: PBITMAPINFOHEADER): DWORD;

function ICDecompressEnd(hic: HIC): DWORD;

{== Decompression(ex) functions ==============================================}

//
// on Win16 these functions are macros that call ICMessage. ICMessage will
// not work on NT. rather than add new entrypoints we have given
// them as static inline functions
//

{-- ICDecompressEx() - decompress a single frame -----------------------------}

function ICDecompressEx(
hic : HIC;
dwFlags : DWORD;
lpbiSrc : PBITMAPINFOHEADER;
lpSrc : PVOID;
xSrc : int;
ySrc : int;
dxSrc : int;
dySrc : int;
lpbiDst : PBITMAPINFOHEADER;
lpDst : PVOID;
xDst : int;
yDst : int;
dxDst : int;
dyDst : int
): DWORD; stdcall;

{-- ICDecompressExBegin() - start compression from a src fmt to a dest fmt ---}

function ICDecompressExBegin(
hic : HIC;
dwFlags : DWORD;
lpbiSrc : PBITMAPINFOHEADER;
lpSrc : PVOID;
xSrc : int;
ySrc : int;
dxSrc : int;
dySrc : int;
lpbiDst : PBITMAPINFOHEADER;
lpDst : PVOID;
xDst : int;
yDst : int;
dxDst : int;
dyDst : int
): DWORD; stdcall;

{-- ICDecompressExQuery() ----------------------------------------------------}

function ICDecompressExQuery(
hic : HIC;
dwFlags : DWORD;
lpbiSrc : PBITMAPINFOHEADER;
lpSrc : PVOID;
xSrc : int;
ySrc : int;
dxSrc : int;
dySrc : int;
lpbiDst : PBITMAPINFOHEADER;
lpDst : PVOID;
xDst : int;
yDst : int;
dxDst : int;
dyDst : int
): DWORD; stdcall;

function ICDecompressExEnd(hic: HIC): DWORD;

{== Drawing functions ========================================================}

{-- ICDrawBegin() - start decompressing data with fmt directly to screen -----}

// return zero if the decompressor supports drawing.

function ICDrawBegin(
hic : HIC;
dwFlags : DWORD; // flags
hpal : HPALETTE; // palette to draw with
hwnd : HWND; // window to draw to
hdc : HDC; // HDC to draw to
xDst : int; // destination rectangle
yDst : int;
dxDst : int;
dyDst : int;
lpbi : PBITMAPINFOHEADER; // format of frame to draw
xSrc : int; // source rectangle
ySrc : int;
dxSrc : int;
dySrc : int;
dwRate : DWORD; // frames/second = (dwRate/dwScale)
dwScale : DWORD
): DWORD; cdecl;

{-- ICDraw() - decompress data directly to the screen ------------------------}

function ICDraw(
hic : HIC;
dwFlags : DWORD; // flags
lpFormat : PVOID; // format of frame to decompress
lpData : PVOID; // frame data to decompress
cbData : DWORD; // size of data
lTime : DWORD // time to draw this frame
): DWORD; cdecl;

// ICMessage is not supported on Win32, so provide a static inline function
// to do the same job

function ICDrawSuggestFormat(
hic : HIC;
lpbiIn : PBITMAPINFOHEADER;
lpbiOut : PBITMAPINFOHEADER;
dxSrc : int;
dySrc : int;
dxDst : int;
dyDst : int;
hicDecomp : HIC
): DWORD; stdcall;

{-- ICDrawQuery() - determines if the compressor is willing to render fmt ----}

function ICDrawQuery(hic: HIC; lpbiInput: PBITMAPINFOHEADER): DWORD;
function ICDrawChangePalette(hic: HIC; lpbiInput: PBITMAPINFOHEADER): DWORD;
function ICGetBuffersWanted(hic: HIC; lpdwBuffers: PDWORD): DWORD;
function ICDrawEnd(hic: HIC): DWORD;
function ICDrawStart(hic: HIC): DWORD;
function ICDrawStartPlay(hic: HIC; lFrom, lTo: DWORD): DWORD;
function ICDrawStop(hic: HIC): DWORD;
function ICDrawStopPlay(hic: HIC): DWORD;
function ICDrawGetTime(hic: HIC; lplTime: PDWORD): DWORD;
function ICDrawSetTime(hic: HIC; lTime: DWORD): DWORD;
function ICDrawRealize(hic: HIC; hdc: HDC; fBackground: BOOL): DWORD;
function ICDrawFlush(hic: HIC): DWORD;
function ICDrawRenderBuffer(hic: HIC): DWORD;

{== Status callback functions ================================================}

{-- ICSetStatusProc() - Set the status callback function ---------------------}

// ICMessage is not supported on NT

function ICSetStatusProc(
hic : HIC;
dwFlags : DWORD;
lParam : DWORD;
fpfnStatus : TICStatusProc
): DWORD; stdcall;

{== Helper routines for DrawDib and MCIAVI... ================================}

function ICLocate(fccType, fccHandler: DWORD; lpbiIn, lpbiOut: PBITMAPINFOHEADER; wFlags: WORD): HIC; stdcall;
function ICGetDisplayFormat(hic: HIC; lpbiIn, lpbiOut: PBITMAPINFOHEADER; BitDepth: int; dx, dy: int): HIC; stdcall;

function ICDecompressOpen(fccType, fccHandler: DWORD; lpbiIn, lpbiOut: PBITMAPINFOHEADER): HIC;
function ICDrawOpen(fccType, fccHandler: DWORD; lpbiIn: PBITMAPINFOHEADER): HIC;

{== Higher level functions ===================================================}

function ICImageCompress(
hic : HIC; // compressor to use
uiFlags : UINT; // flags (none yet)
lpbiIn : PBITMAPINFO; // format to compress from
lpBits : PVOID; // data to compress
lpbiOut : PBITMAPINFO; // compress to this (NULL ==> default)
lQuality : DWORD; // quality to use
plSize : PDWORD // compress to this size (0=whatever)
): THANDLE; stdcall;

function ICImageDecompress(
hic : HIC; // compressor to use
uiFlags : UINT; // flags (none yet)
lpbiIn : PBITMAPINFO; // format to decompress from
lpBits : PVOID; // data to decompress
lpbiOut : PBITMAPINFO // decompress to this (NULL ==> default)
): THANDLE; stdcall;

{-- TCompVars ----------------------------------------------------------------}

//
// Structure used by ICSeqCompressFrame and ICCompressorChoose routines
// Make sure this matches the autodoc in icm.c!
//

type
PCOMPVARS = ^TCOMPVARS;
TCOMPVARS = record
cbSize : DWORD; // set to sizeof(COMPVARS) before
// calling ICCompressorChoose
dwFlags : DWORD; // see below...
hic : HIC; // HIC of chosen compressor
fccType : DWORD; // basically ICTYPE_VIDEO
fccHandler : DWORD; // handler of chosen compressor or
// &quot;&quot; or &quot;DIB &quot;
lpbiIn : PBITMAPINFO; // input format
lpbiOut : PBITMAPINFO; // output format - will compress to this
lpBitsOut : PVOID;
lpBitsPrev : PVOID;
lFrame : DWORD;
lKey : DWORD; // key frames how often?
lDataRate : DWORD; // desired data rate KB/Sec
lQ : DWORD; // desired quality
lKeyCount : DWORD;
lpState : PVOID; // state of compressor
cbState : DWORD; // size of the state
end;

// FLAGS for dwFlags element of COMPVARS structure:
// set this flag if you initialize COMPVARS before calling ICCompressorChoose

const
ICMF_COMPVARS_VALID = $00000001; // COMPVARS contains valid data

{-- ICCompressorChoose() - allows user to choose compressor, quality etc... --}

function ICCompressorChoose(
hwnd : HWND; // parent window for dialog
uiFlags : UINT; // flags
pvIn : PVOID; // input format (optional)
lpData : PVOID; // input data (optional)
pc : PCOMPVARS; // data about the compressor/dlg
lpszTitle : LPSTR // dialog title (optional)
): BOOL; stdcall;

// defines for uiFlags

const
ICMF_CHOOSE_KEYFRAME = $0001; // show KeyFrame Every box
ICMF_CHOOSE_DATARATE = $0002; // show DataRate box
ICMF_CHOOSE_PREVIEW = $0004; // allow expanded preview dialog
ICMF_CHOOSE_ALLCOMPRESSORS = $0008; // don't only show those that
// can handle the input format
// or input data

function ICSeqCompressFrameStart(pc: PCOMPVARS; lpbiIn: PBITMAPINFO): BOOL; stdcall;
procedure ICSeqCompressFrameEnd(pc: PCOMPVARS); stdcall;

function ICSeqCompressFrame(
pc : PCOMPVARS; // set by ICCompressorChoose
uiFlags : UINT; // flags
lpBits : PVOID; // input DIB bits
pfKey : PBOOL; // did it end up being a key frame?
plSize : PDWORD // size to compress to/of returned image
): PVOID; stdcall;

procedure ICCompressorFree(pc: PCOMPVARS); stdcall;

{== DRAWDIB - Routines for drawing to the display ============================}

type
HDRAWDIB = THandle; // hdd

{== DrawDib Flags ============================================================}

const
DDF_UPDATE = $0002; // re-draw the last DIB
DDF_SAME_HDC = $0004; // HDC same as last call (all setup)
DDF_SAME_DRAW = $0008; // draw params are the same
DDF_DONTDRAW = $0010; // dont draw frame, just decompress
DDF_ANIMATE = $0020; // allow palette animation
DDF_BUFFER = $0040; // always buffer image
DDF_JUSTDRAWIT = $0080; // just draw it with GDI
DDF_FULLSCREEN = $0100; // use DisplayDib
DDF_BACKGROUNDPAL = $0200; // Realize palette in background
DDF_NOTKEYFRAME = $0400; // this is a partial frame update, hint
DDF_HURRYUP = $0800; // hurry up please!
DDF_HALFTONE = $1000; // always halftone

DDF_PREROLL = DDF_DONTDRAW; // Builing up a non-keyframe
DDF_SAME_DIB = DDF_SAME_DRAW;
DDF_SAME_SIZE = DDF_SAME_DRAW;

{== DrawDib functions ========================================================}

{-- DrawDibOpen() ------------------------------------------------------------}

function DrawDibOpen: HDRAWDIB; stdcall;

{-- DrawDibClose() -----------------------------------------------------------}

function DrawDibClose(hdd: HDRAWDIB): BOOL; stdcall;

{-- DrawDibGetBuffer() -------------------------------------------------------}

function DrawDibGetBuffer(hdd: HDRAWDIB; lpbi: PBITMAPINFOHEADER; dwSize: DWORD; dwFlags: DWORD): PVOID; stdcall;

{-- DrawDibGetPalette() - get the palette used for drawing DIBs --------------}

function DrawDibGetPalette(hdd: HDRAWDIB): HPALETTE; stdcall;

{-- DrawDibSetPalette() - set the palette used for drawing DIBs --------------}

function DrawDibSetPalette(hdd: HDRAWDIB; hpal: HPALETTE): BOOL; stdcall;

{-- DrawDibChangePalette() ---------------------------------------------------}

function DrawDibChangePalette(hdd: HDRAWDIB; iStart, iLen: int; lppe: PPALETTEENTRY): BOOL; stdcall;

{-- DrawDibRealize() - realize the palette in a HDD --------------------------}

function DrawDibRealize(hdd: HDRAWDIB; hdc: HDC; fBackground: BOOL): UINT; stdcall;

{-- DrawDibStart() - start of streaming playback -----------------------------}

function DrawDibStart(hdd: HDRAWDIB; rate: DWORD): BOOL; stdcall;

{-- DrawDibStop() - start of streaming playback ------------------------------}

function DrawDibStop(hdd: HDRAWDIB): BOOL; stdcall;

{-- DrawDibBegin() - prepare to draw -----------------------------------------}

function DrawDibBegin(
hdd : HDRAWDIB;
hdc : HDC;
dxDst : int;
dyDst : int;
lpbi : PBITMAPINFOHEADER;
dxSrc : int;
dySrc : int;
wFlags : UINT
): BOOL; stdcall;

{-- DrawDibDraw() - actually draw a DIB to the screen ------------------------}

function DrawDibDraw(
hdd : HDRAWDIB;
hdc : HDC;
xDst : int;
yDst : int;
dxDst : int;
dyDst : int;
lpbi : PBITMAPINFOHEADER;
lpBits : PVOID;
xSrc : int;
ySrc : int;
dxSrc : int;
dySrc : int;
wFlags : UINT
): BOOL; stdcall;

{-- DrawDibUpdate() - redraw last image (may only be valid with DDF_BUFFER) --}

function DrawDibUpdate(hdd: HDRAWDIB; hdc: HDC; x, y: int): BOOL;

{-- DrawDibEnd() -------------------------------------------------------------}

function DrawDibEnd(hdd: HDRAWDIB): BOOL; stdcall;

{-- DrawDibTime() - for debugging purposes only ------------------------------}

type
PDRAWDIBTIME = ^TDRAWDIBTIME;
TDRAWDIBTIME = record
timeCount : DWORD;
timeDraw : DWORD;
timeDecompress : DWORD;
timeDither : DWORD;
timeStretch : DWORD;
timeBlt : DWORD;
timeSetDIBits : DWORD;
end;

function DrawDibTime(hdd: HDRAWDIB; lpddtime: PDRAWDIBTIME): BOOL; stdcall;

{-- Display profiling --------------------------------------------------------}

const
PD_CAN_DRAW_DIB = $0001; // if you can draw at all
PD_CAN_STRETCHDIB = $0002; // basicly RC_STRETCHDIB
PD_STRETCHDIB_1_1_OK = $0004; // is it fast?
PD_STRETCHDIB_1_2_OK = $0008; // ...
PD_STRETCHDIB_1_N_OK = $0010; // ...

function DrawDibProfileDisplay(lpbi: PBITMAPINFOHEADER): DWORD; stdcall;

{== AVIFMT - AVI file format definitions =====================================}

//
// The following is a short description of the AVI file format. Please
// see the accompanying documentation for a full explanation.
//
// An AVI file is the following RIFF form:
//
// RIFF('AVI'
// LIST('hdrl'
// avih(<MainAVIHeader>)
// LIST ('strl'
// strh(<Stream header>)
// strf(<Stream format>)
// ... additional header data
// LIST('movi'
// { LIST('rec'
// SubChunk...
// )
// | SubChunk } ....
// )
// [ <AVIIndex> ]
// )
//
// The main file header specifies how many streams are present. For
// each one, there must be a stream header chunk and a stream format
// chunk, enlosed in a 'strl' LIST chunk. The 'strf' chunk contains
// type-specific format information; for a video stream, this should
// be a BITMAPINFO structure, including palette. For an audio stream,
// this should be a WAVEFORMAT (or PCMWAVEFORMAT) structure.
//
// The actual data is contained in subchunks within the 'movi' LIST
// chunk. The first two characters of each data chunk are the
// stream number with which that data is associated.
//
// Some defined chunk types:
// Video Streams:
// ##db: RGB DIB bits
// ##dc: RLE8 compressed DIB bits
// ##pc: Palette Change
//
// Audio Streams:
// ##wb: waveform audio bytes
//
// The grouping into LIST 'rec' chunks implies only that the contents of
// the chunk should be read into memory at the same time. This
// grouping is used for files specifically intended to be played from
// CD-ROM.
//
// The index chunk at the end of the file should contain one entry for
// each data chunk in the file.
//
// Limitations for the current software:
// Only one video stream and one audio stream are allowed.
// The streams must start at the beginning of the file.
//
//
// To register codec types please obtain a copy of the Multimedia
// Developer Registration Kit from:
//
// Microsoft Corporation
// Multimedia Systems Group
// Product Marketing
// One Microsoft Way
// Redmond, WA 98052-6399
//

{-- form types, list types and chunk types -----------------------------------}

const
formtypeAVI = $20495641; // mmioFOURCC('A', 'V', 'I', ' ')
listtypeAVIHEADER = $6C726468; // mmioFOURCC('h', 'd', 'r', 'l')
ckidAVIMAINHDR = $68697661; // mmioFOURCC('a', 'v', 'i', 'h')
listtypeSTREAMHEADER = $6C727473; // mmioFOURCC('s', 't', 'r', 'l')
ckidSTREAMHEADER = $68727473; // mmioFOURCC('s', 't', 'r', 'h')
ckidSTREAMFORMAT = $66727473; // mmioFOURCC('s', 't', 'r', 'f')
ckidSTREAMHANDLERDATA = $64727473; // mmioFOURCC('s', 't', 'r', 'd')
ckidSTREAMNAME = $6E727473; // mmioFOURCC('s', 't', 'r', 'n')

listtypeAVIMOVIE = $69766F6D; // mmioFOURCC('m', 'o', 'v', 'i')
listtypeAVIRECORD = $20636572; // mmioFOURCC('r', 'e', 'c', ' ')

ckidAVINEWINDEX = $31786469; // mmioFOURCC('i', 'd', 'x', '1')

{-- Stream types for the <fccType> field of the stream header ----------------}

streamtypeVIDEO = $73646976; // mmioFOURCC('v', 'i', 'd', 's')
streamtypeAUDIO = $73647561; // mmioFOURCC('a', 'u', 'd', 's')
streamtypeMIDI = $7364696D; // mmioFOURCC('m', 'i', 'd', 's')
streamtypeTEXT = $73747874; // mmioFOURCC('t', 'x', 't', 's')

{-- Basic chunk types --------------------------------------------------------}

cktypeDIBbits = $6264; // aviTWOCC('d', 'b')
cktypeDIBcompressed = $6364; // aviTWOCC('d', 'c')
cktypePALchange = $6370; // aviTWOCC('p', 'c')
cktypeWAVEbytes = $6277; // aviTWOCC('w', 'b')

{-- Chunk id to use for extra chunks for padding -----------------------------}

ckidAVIPADDING = $4B4E554A; // mmioFOURCC('J', 'U', 'N', 'K')

{== Useful macros ============================================================}

{-- Macro to get stream number out of a FOURCC ckid --------------------------}

function FromHex(n: BYTE): BYTE;
function StreamFromFOURCC(fcc: DWORD): BYTE;

{-- Macro to get TWOCC chunk type out of a FOURCC ckid -----------------------}

function TWOCCFromFOURCC(fcc: DWORD): WORD;

{-- Macro to make a ckid for a chunk out of a TWOCC and a stream num (0-255) -}

function ToHex(n: BYTE): BYTE;
function MAKEAVICKID(tcc: WORD; stream: BYTE): DWORD;

{-- Main AVI file header -----------------------------------------------------}

{-- flags for use in <dwFlags> in AVIFileHdr ---------------------------------}

const
AVIF_HASINDEX = $00000010; // Index at end of file?
AVIF_MUSTUSEINDEX = $00000020;
AVIF_ISINTERLEAVED = $00000100;
AVIF_TRUSTCKTYPE = $00000800; // Use CKType to find key frames?
AVIF_WASCAPTUREFILE = $00010000;
AVIF_COPYRIGHTED = $00020000;

{-- The AVI File Header LIST chunk should be padded to this size -------------}

const
AVI_HEADERSIZE = 2048; // size of AVI header list

type
PMainAVIHeader = ^TMainAVIHeader;
TMainAVIHeader = record
dwMicroSecPerFrame : DWORD; // frame display rate (or 0L)
dwMaxBytesPerSec : DWORD; // max. transfer rate
dwPaddingGranularity : DWORD; // pad to multiples of this
// size; normally 2K.
dwFlags : DWORD; // the ever-present flags
dwTotalFrames : DWORD; // # frames in file
dwInitialFrames : DWORD;
dwStreams : DWORD;
dwSuggestedBufferSize : DWORD;

dwWidth : DWORD;
dwHeight : DWORD;

dwReserved : array[0..3] of DWORD;
end;

{-- Stream header ------------------------------------------------------------}

const
AVISF_DISABLED = $00000001;

AVISF_VIDEO_PALCHANGES = $00010000;

type
PAVIStreamHeader = ^TAVIStreamHeader;
TAVIStreamHeader = record
fccType : FOURCC;
fccHandler : FOURCC;
dwFlags : DWORD; // Contains AVITF_* flags
wPriority : WORD;
wLanguage : WORD;
dwInitialFrames : DWORD;
dwScale : DWORD;
dwRate : DWORD; // dwRate / dwScale == samples/second
dwStart : DWORD;
dwLength : DWORD; // In units above...
dwSuggestedBufferSize : DWORD;
dwQuality : DWORD;
dwSampleSize : DWORD;
rcFrame : TRECT;
end;

{-- Flags for index ----------------------------------------------------------}

const
AVIIF_NOTIME = $00000100; // this frame doesn't take any time
AVIIF_COMPUSE = $0FFF0000; // these bits are for compressor use

type
PAVIINDEXENTRY = ^TAVIINDEXENTRY;
TAVIINDEXENTRY = record
ckid : DWORD;
dwFlags : DWORD;
dwChunkOffset : DWORD; // Position of chunk
dwChunkLength : DWORD; // Length of chunk
end;

{-- Palette change chunk (used in video streams) -----------------------------}

PAVIPALCHANGE = ^TAVIPALCHANGE;
TAVIPALCHANGE = record
bFirstEntry : BYTE; // first entry to change
bNumEntries : BYTE; // # entries to change (0 if 256)
wFlags : WORD; // Mostly to preserve alignment...
// peNew : array[0..-1] of PALETTEENTRY ;
// New color specifications
end;

{== AVIFile - routines for reading/writing standard AVI files ================}

//
// Ansi - Unicode thunking.
//
// Unicode or Ansi-only apps can call the avifile APIs.
// any Win32 app who wants to use
// any of the AVI COM interfaces must be UNICODE - the AVISTREAMINFO and
// AVIFILEINFO structures used in the Info methods of these interfaces are
// the unicode variants, and no thunking to or from ansi takes place
// except in the AVIFILE api entrypoints.
//
// For Ansi/Unicode thunking: for each entrypoint or structure that
// uses chars or strings, two versions are declared in the Win32 version,
// ApiNameW and ApiNameA. The default name ApiName is #defined to one or
// other of these depending on whether UNICODE is defined (during
// compilation of the app that is including this header). The source will
// contain ApiName and ApiNameA (with ApiName being the Win16 implementation,
// and also #defined to ApiNameW, and ApiNameA being the thunk entrypoint).
//

// For GetFrame::SetFormat - use the best format for the display

const
AVIGETFRAMEF_BESTDISPLAYFMT = 1;

//
// Structures used by AVIStreamInfo & AVIFileInfo.
//
// These are related to, but not identical to, the header chunks
// in an AVI file.
//

{-- AVISTREAMINFO ------------------------------------------------------------}

// for Unicode/Ansi thunking we need to declare three versions of this!

type
PAVISTREAMINFOW = ^TAVISTREAMINFOW;
TAVISTREAMINFOW = record
fccType : DWORD;
fccHandler : DWORD;
dwFlags : DWORD; // Contains AVITF_* flags
dwCaps : DWORD;
wPriority : WORD;
wLanguage : WORD;
dwScale : DWORD;
dwRate : DWORD; // dwRate / dwScale == samples/second
dwStart : DWORD;
dwLength : DWORD; // In units above...
dwInitialFrames : DWORD;
dwSuggestedBufferSize : DWORD;
dwQuality : DWORD;
dwSampleSize : DWORD;
rcFrame : TRECT ;
dwEditCount : DWORD;
dwFormatChangeCount : DWORD;
szName : array[0..63] of WideChar;
end;

PAVISTREAMINFOA = ^TAVISTREAMINFOA;
TAVISTREAMINFOA = record
fccType : DWORD;
fccHandler : DWORD;
dwFlags : DWORD; // Contains AVITF_* flags
dwCaps : DWORD;
wPriority : WORD;
wLanguage : WORD;
dwScale : DWORD;
dwRate : DWORD; // dwRate / dwScale == samples/second
dwStart : DWORD;
dwLength : DWORD; // In units above...
dwInitialFrames : DWORD;
dwSuggestedBufferSize : DWORD;
dwQuality : DWORD;
dwSampleSize : DWORD;
rcFrame : TRECT ;
dwEditCount : DWORD;
dwFormatChangeCount : DWORD;
szName : array[0..63] of AnsiChar;
end;

TAVISTREAMINFO = TAVISTREAMINFOA;
PAVISTREAMINFO = PAVISTREAMINFOA;

const
AVISTREAMINFO_DISABLED = $00000001;
AVISTREAMINFO_FORMATCHANGES = $00010000;

{-- AVIFILEINFO --------------------------------------------------------------}

type
PAVIFILEINFOW = ^TAVIFILEINFOW;
TAVIFILEINFOW = record
dwMaxBytesPerSec : DWORD; // max. transfer rate
dwFlags : DWORD; // the ever-present flags
dwCaps : DWORD;
dwStreams : DWORD;
dwSuggestedBufferSize : DWORD;

dwWidth : DWORD;
dwHeight : DWORD;

dwScale : DWORD;
dwRate : DWORD; // dwRate / dwScale == samples/second
dwLength : DWORD;

dwEditCount : DWORD;

szFileType : array[0..63] of WideChar;
// descriptive string for file type?
end;

PAVIFILEINFOA = ^TAVIFILEINFOA;
TAVIFILEINFOA = record
dwMaxBytesPerSec : DWORD; // max. transfer rate
dwFlags : DWORD; // the ever-present flags
dwCaps : DWORD;
dwStreams : DWORD;
dwSuggestedBufferSize : DWORD;

dwWidth : DWORD;
dwHeight : DWORD;

dwScale : DWORD;
dwRate : DWORD; // dwRate / dwScale == samples/second
dwLength : DWORD;

dwEditCount : DWORD;

szFileType : array[0..63] of AnsiChar;
// descriptive string for file type?
end;

TAVIFILEINFO = TAVIFILEINFOA;
PAVIFILEINFO = PAVIFILEINFOA;

{-- Flags for dwFlags --------------------------------------------------------}

const
AVIFILEINFO_HASINDEX = $00000010;
AVIFILEINFO_MUSTUSEINDEX = $00000020;
AVIFILEINFO_ISINTERLEAVED = $00000100;
AVIFILEINFO_WASCAPTUREFILE = $00010000;
AVIFILEINFO_COPYRIGHTED = $00020000;

{-- Flags for dwCaps ---------------------------------------------------------}

AVIFILECAPS_CANREAD = $00000001;
AVIFILECAPS_CANWRITE = $00000002;
AVIFILECAPS_ALLKEYFRAMES = $00000010;
AVIFILECAPS_NOCOMPRESSION = $00000020;

type
TAVISAVECALLBACK = function(i: int): BOOL; pascal;

{-- AVICOMPRESSOPTIONS -------------------------------------------------------}

// Make sure it matches the AutoDoc in avisave.c !!!

type
PAVICOMPRESSOPTIONS = ^TAVICOMPRESSOPTIONS;
TAVICOMPRESSOPTIONS = record
fccType : DWORD; // stream type, for consistency
fccHandler : DWORD; // compressor
dwKeyFrameEvery : DWORD; // keyframe rate
dwQuality : DWORD; // compress quality 0-10,000
dwBytesPerSecond : DWORD; // bytes per second
dwFlags : DWORD; // flags... see below
lpFormat : PVOID; // save format
cbFormat : DWORD;
lpParms : PVOID; // compressor options
cbParms : DWORD;
dwInterleaveEvery : DWORD; // for non-video streams only
end;

//
// Defines for the dwFlags field of the AVICOMPRESSOPTIONS struct
// Each of these flags determines if the appropriate field in the structure
// (dwInterleaveEvery, dwBytesPerSecond, and dwKeyFrameEvery) is payed
// attention to. See the autodoc in avisave.c for details.
//

const
AVICOMPRESSF_INTERLEAVE = $00000001; // interleave
AVICOMPRESSF_DATARATE = $00000002; // use a data rate
AVICOMPRESSF_KEYFRAMES = $00000004; // use keyframes
AVICOMPRESSF_VALID = $00000008; // has valid data?

{== AVI interfaces ===========================================================}

{-- AVIStream ----------------------------------------------------------------}

type
PAVIStream = ^IAVIStream;
IAVIStream = class
public
function Create(lParam1, lParam2: LPARAM): HResult; virtual; stdcall; abstract;
function Info(psi: PAVISTREAMINFOW; lSize: DWORD): HResult; virtual; stdcall; abstract;
function FindSample(lPos: DWORD; lFlags: DWORD): DWORD; virtual; stdcall; abstract;
function ReadFormat(lPos: DWORD; lpFormat: PVOID; lpcbFormat: PDWORD): HResult; virtual; stdcall; abstract;
function SetFormat(lPos: DWORD; lpFormat: PVOID; cbFormat: DWORD): HResult; virtual; stdcall; abstract;
function Read(lStart: DWORD; lSamples: DWORD; lpBuffer: PVOID; cbBuffer: DWORD; plBytes, plSamples: PDWORD): HResult; virtual; stdcall; abstract;
function Write(lStart: DWORD; lSamples: DWORD; lpBuffer: PVOID; cbBuffer: DWORD; dwFlags: DWORD; plSampWritten, plBytesWritten: PDWORD): HResult; virtual; stdcall; abstract;
function Delete(lStart: DWORD; lSamples: DWORD): HResult; virtual; stdcall; abstract;
function ReadData(fcc: DWORD; lp: PVOID; lpcb: PDWORD): HResult; virtual; stdcall; abstract;
function WriteData(fcc: DWORD; lp: PVOID; cb: DWORD): HResult; virtual; stdcall; abstract;
function SetInfo(lpInfo: PAVISTREAMINFOW; cbInfo: DWORD): HResult; virtual; stdcall; abstract;
end;

PAVIStreaming = ^IAVIStreaming;
IAVIStreaming = class
public
function _Begin(
lStart, // start of what we expect to play
lEnd : DWORD; // expected end, or -1
lRate : DWORD // Should this be a float?
): HResult; virtual; stdcall; abstract;
function _End: HResult; virtual; stdcall; abstract;
end;

PAVIEditStream = ^IAVIEditStream;
IAVIEditStream = class
public
function Cut(plStart, plLength: PDWORD; var ppResult: PAVISTREAM): HResult; virtual; stdcall; abstract;
function Copy(plStart, plLength: PDWORD; var ppResult: PAVISTREAM): HResult; virtual; stdcall; abstract;
function Paste(plPos: PDWORD; plLength: PDWORD; pstream: PAVISTREAM; lStart, lEnd: DWORD): HResult; virtual; stdcall; abstract;
function Clone(var ppResult: PAVISTREAM): HResult; virtual; stdcall; abstract;
function SetInfo(lpInfo: PAVISTREAMINFOW; cbInfo: DWORD): HResult; virtual; stdcall; abstract;
end;

{-- AVIFile ------------------------------------------------------------------}

PAVIFile = ^IAVIFile;
IAVIFile = class
function Info(pfi: PAVIFILEINFOW; lSize: DWORD): HResult; virtual; stdcall; abstract;
function GetStream(var ppStream: PAVISTREAM; fccType: DWORD; lParam: DWORD): HResult; virtual; stdcall; abstract;
function CreateStream(var ppStream: PAVISTREAM; psi: PAVISTREAMINFOW): HResult; virtual; stdcall; abstract;
function WriteData(ckid: DWORD; lpData: PVOID; cbData: DWORD): HResult; virtual; stdcall; abstract;
function ReadData(ckid: DWORD; lpData: PVOID; lpcbData: PDWORD): HResult; virtual; stdcall; abstract;
function EndRecord: HResult; virtual; stdcall; abstract;
function DeleteStream(fccType: DWORD; lParam: DWORD): HResult; virtual; stdcall; abstract;
end;

{-- GetFrame -----------------------------------------------------------------}

PGetFrame = ^IGetFrame;
IGetFrame = class
public
function GetFrame(lPos: DWORD): PVOID; virtual; stdcall; abstract;

function _Begin(lStart, lEnd: DWORD; lRate: DWORD): HResult; virtual; stdcall; abstract;
function _End: HResult; virtual; stdcall; abstract;

function SetFormat(lpbi: PBITMAPINFOHEADER; lpBits: PVOID; x, y, dx, dy: int): HResult; virtual; stdcall; abstract;

// STDMETHOD(DrawFrameStart) (THIS) PURE;
// STDMETHOD(DrawFrame) (THIS_ DWORD lPos, HDC hdc, int x, int y, int dx, int dy) PURE;
// STDMETHOD(DrawFrameEnd) (THIS) PURE;
end;

{-- GUIDs --------------------------------------------------------------------}

const
IID_IAVIFile : TGUID =
(D1: $00020020; D2: $0; D3: $0; D4$C0,$0,$0,$0,$0,$0,$0,$46));
IID_IAVIStream : TGUID =
(D1: $00020021; D2: $0; D3: $0; D4$C0,$0,$0,$0,$0,$0,$0,$46));
IID_IAVIStreaming : TGUID =
(D1: $00020022; D2: $0; D3: $0; D4$C0,$0,$0,$0,$0,$0,$0,$46));
IID_IGetFrame : TGUID =
(D1: $00020023; D2: $0; D3: $0; D4$C0,$0,$0,$0,$0,$0,$0,$46));
IID_IAVIEditStream : TGUID =
(D1: $00020024; D2: $0; D3: $0; D4$C0,$0,$0,$0,$0,$0,$0,$46));

CLSID_AVISimpleUnMarshal : TGUID =
(D1: $00020009; D2: $0; D3: $0; D4$C0,$0,$0,$0,$0,$0,$0,$46));

CLSID_AVIFile : TGUID =
(D1: $00020000; D2: $0; D3: $0; D4$C0,$0,$0,$0,$0,$0,$0,$46));

AVIFILEHANDLER_CANREAD = $0001;
AVIFILEHANDLER_CANWRITE = $0002;
AVIFILEHANDLER_CANACCEPTNONRGB = $0004;

{-- Functions ----------------------------------------------------------------}

procedure AVIFileInit; stdcall; // Call this first!
procedure AVIFileExit; stdcall;

function AVIFileAddRef(pfile: PAVIFILE): UDWORD; stdcall;
function AVIFileRelease(pfile: PAVIFILE): UDWORD; stdcall;

function AVIFileOpenA(var ppfile: PAVIFILE; szFile: LPCSTR; uMode: UINT; lpHandler: PCLSID): HResult; stdcall;
function AVIFileOpenW(var ppfile: PAVIFILE; szFile: LPCWSTR; uMode: UINT; lpHandler: PCLSID): HResult; stdcall;

function AVIFileOpen(var ppfile: PAVIFILE; szFile: LPCSTR; uMode: UINT; lpHandler: PCLSID): HResult; stdcall; // AVIFileOpenA

function AVIFileInfoW(pfile: PAVIFILE; pfi: PAVIFILEINFOW; lSize: DWORD): HResult; stdcall;
function AVIFileInfoA(pfile: PAVIFILE; pfi: PAVIFILEINFOA; lSize: DWORD): HResult; stdcall;

function AVIFileInfo(pfile: PAVIFILE; pfi: PAVIFILEINFOA; lSize: DWORD): HResult; stdcall; // AVIFileInfoA

function AVIFileGetStream(pfile: PAVIFILE; var ppavi: PAVISTREAM; fccType: DWORD; lParam: DWORD): HResult; stdcall;

function AVIFileCreateStreamW(pfile: PAVIFILE; var ppavi: PAVISTREAM; psi: PAVISTREAMINFOW): HResult; stdcall;
function AVIFileCreateStreamA(pfile: PAVIFILE; var ppavi: PAVISTREAM; psi: PAVISTREAMINFOA): HResult; stdcall;

function AVIFileCreateStream(pfile: PAVIFILE; var ppavi: PAVISTREAM; psi: PAVISTREAMINFOA): HResult; stdcall; // AVIFileCreateStreamA

function AVIFileWriteData(pfile: PAVIFILE; ckid: DWORD; lpData: PVOID; cbData: DWORD): HResult; stdcall;
function AVIFileReadData(pfile: PAVIFILE; ckid: DWORD; lpData: PVOID; lpcbData: PDWORD): HResult; stdcall;
function AVIFileEndRecord(pfile: PAVIFILE): HResult; stdcall;

function AVIStreamAddRef(pavi: PAVISTREAM): UDWORD; stdcall;
function AVIStreamRelease(pavi: PAVISTREAM): UDWORD; stdcall;

function AVIStreamInfoW (pavi: PAVISTREAM; psi: PAVISTREAMINFOW; lSize: DWORD): HResult; stdcall;
function AVIStreamInfoA (pavi: PAVISTREAM; psi: PAVISTREAMINFOA; lSize: DWORD): HResult; stdcall;

function AVIStreamInfo(pavi: PAVISTREAM; psi: PAVISTREAMINFOA; lSize: DWORD): HResult; stdcall; // AVIStreamInfoA

function AVIStreamFindSample(pavi: PAVISTREAM; lPos: DWORD; lFlags: DWORD): DWORD; stdcall;
function AVIStreamReadFormat(pavi: PAVISTREAM; lPos: DWORD; lpFormat: PVOID; lpcbFormat: PDWORD): HResult; stdcall;
function AVIStreamSetFormat(pavi: PAVISTREAM; lPos: DWORD; lpFormat: PVOID; cbFormat: DWORD): HResult; stdcall;
function AVIStreamReadData(pavi: PAVISTREAM; fcc: DWORD; lp: PVOID; lpcb: PDWORD): HResult; stdcall;
function AVIStreamWriteData(pavi: PAVISTREAM; fcc: DWORD; lp: PVOID; cb: DWORD): HResult; stdcall;

function AVIStreamRead(
pavi : PAVISTREAM;
lStart : DWORD;
lSamples : DWORD;
lpBuffer : PVOID;
cbBuffer : DWORD;
plBytes : PDWORD;
plSamples : PDWORD
): HResult; stdcall;

const
AVISTREAMREAD_CONVENIENT = -1;

function AVIStreamWrite(
pavi : PAVISTREAM;
lStart,
lSamples : DWORD;
lpBuffer : PVOID;
cbBuffer : DWORD;
dwFlags : DWORD;
plSampWritten : PDWORD;
plBytesWritten : PDWORD
): HResult; stdcall;

// Right now, these just use AVIStreamInfo() to get information, then
// return some of it. Can they be more efficient?

function AVIStreamStart(pavi: PAVISTREAM): DWORD; stdcall;
function AVIStreamLength(pavi: PAVISTREAM): DWORD; stdcall;
function AVIStreamTimeToSample(pavi: PAVISTREAM; lTime: DWORD): DWORD; stdcall;
function AVIStreamSampleToTime(pavi: PAVISTREAM; lSample: DWORD): DWORD; stdcall;

function AVIStreamBeginStreaming(pavi: PAVISTREAM; lStart, lEnd: DWORD; lRate: DWORD): HResult; stdcall;
function AVIStreamEndStreaming(pavi: PAVISTREAM): HResult; stdcall;

{-- Helper functions for using IGetFrame -------------------------------------}

function AVIStreamGetFrameOpen(pavi: PAVISTREAM; lpbiWanted: PBITMAPINFOHEADER): PGETFRAME; stdcall;
function AVIStreamGetFrame(pg: PGETFRAME; lPos: DWORD): PVOID; stdcall;
function AVIStreamGetFrameClose(pg: PGETFRAME): HResult; stdcall;

// !!! We need some way to place an advise on a stream....
// STDAPI AVIStreamHasChanged (PAVISTREAM pavi);

{-- Shortcut function --------------------------------------------------------}

function AVIStreamOpenFromFileA(var ppavi: PAVISTREAM; szFile: LPCSTR; fccType: DWORD;
lParam: DWORD; mode: UINT; pclsidHandler: PCLSID): HResult; stdcall;
function AVIStreamOpenFromFileW(var ppavi: PAVISTREAM; szFile: LPCWSTR; fccType: DWORD;
lParam: DWORD; mode: UINT; pclsidHandler: PCLSID): HResult; stdcall;

function AVIStreamOpenFromFile(var ppavi: PAVISTREAM; szFile: LPCSTR; fccType: DWORD;
lParam: DWORD; mode: UINT; pclsidHandler: PCLSID): HResult; stdcall; // AVIStreamOpenFromFileA

{-- Use to create disembodied streams ----------------------------------------}

function AVIStreamCreate(var ppavi: PAVISTREAM; lParam1, lParam2: DWORD;
pclsidHandler: PCLSID): HResult; stdcall;

// PHANDLER AVIAPI AVIGetHandler (PAVISTREAM pavi, PAVISTREAMHANDLER psh);
// PAVISTREAM AVIAPI AVIGetStream (PHANDLER p);

{-- Flags for AVIStreamFindSample --------------------------------------------}

const
FIND_DIR = $0000000F; // direction
FIND_NEXT = $00000001; // go forward
FIND_PREV = $00000004; // go backward
FIND_FROM_START = $00000008; // start at the logical beginning

FIND_TYPE = $000000F0; // type mask
FIND_KEY = $00000010; // find key frame.
FIND_ANY = $00000020; // find any (non-empty) sample
FIND_FORMAT = $00000040; // find format change

FIND_RET = $0000F000; // return mask
FIND_POS = $00000000; // return logical position
FIND_LENGTH = $00001000; // return logical size
FIND_OFFSET = $00002000; // return physical position
FIND_SIZE = $00003000; // return physical size
FIND_INDEX = $00004000; // return physical index position

{-- Stuff to support backward compat. ----------------------------------------}

function AVIStreamFindKeyFrame(pavi: PAVISTREAM; lPos: DWORD; lFlags: DWORD): DWORD; stdcall; // AVIStreamFindSample

// Non-portable: this is alias for method name
// FindKeyFrame FindSample

function AVIStreamClose(pavi: PAVISTREAM): UDWORD; stdcall; // AVIStreamRelease
function AVIFileClose(pfile: PAVIFILE): UDWORD; stdcall; // AVIFileRelease
procedure AVIStreamInit; stdcall; // AVIFileInit
procedure AVIStreamExit; stdcall; // AVIFileExit

const
SEARCH_NEAREST = FIND_PREV;
SEARCH_BACKWARD = FIND_PREV;
SEARCH_FORWARD = FIND_NEXT;
SEARCH_KEY = FIND_KEY;
SEARCH_ANY = FIND_ANY;

{-- Helper macros ------------------------------------------------------------}

function AVIStreamSampleToSample(pavi1, pavi2: PAVISTREAM; l: DWORD): DWORD;
function AVIStreamNextSample(pavi: PAVISTREAM; l: DWORD): DWORD;
function AVIStreamPrevSample(pavi: PAVISTREAM; l: DWORD): DWORD;
function AVIStreamNearestSample(pavi: PAVISTREAM; l: DWORD): DWORD;
function AVIStreamNextKeyFrame(pavi: PAVISTREAM; l: DWORD): DWORD;
function AVIStreamPrevKeyFrame(pavi: PAVISTREAM; l: DWORD): DWORD;
function AVIStreamNearestKeyFrame(pavi: PAVISTREAM; l: DWORD): DWORD;
function AVIStreamIsKeyFrame(pavi: PAVISTREAM; l: DWORD): BOOL;
function AVIStreamPrevSampleTime(pavi: PAVISTREAM; t: DWORD): DWORD;
function AVIStreamNextSampleTime(pavi: PAVISTREAM; t: DWORD): DWORD;
function AVIStreamNearestSampleTime(pavi: PAVISTREAM; t: DWORD): DWORD;
function AVIStreamNextKeyFrameTime(pavi: PAVISTREAM; t: DWORD): DWORD;
function AVIStreamPrevKeyFrameTime(pavi: PAVISTREAM; t: DWORD): DWORD;
function AVIStreamNearestKeyFrameTime(pavi: PAVISTREAM; t: DWORD): DWORD;
function AVIStreamStartTime(pavi: PAVISTREAM): DWORD;
function AVIStreamLengthTime(pavi: PAVISTREAM): DWORD;
function AVIStreamEnd(pavi: PAVISTREAM): DWORD;
function AVIStreamEndTime(pavi: PAVISTREAM): DWORD;
function AVIStreamSampleSize(pavi: PAVISTREAM; lPos: DWORD; plSize: PDWORD): DWORD;
function AVIStreamFormatSize(pavi: PAVISTREAM; lPos: DWORD; plSize: PDWORD): HResult;
function AVIStreamDataSize(pavi: PAVISTREAM; fcc: DWORD; plSize: PDWORD): HResult;

{== AVISave routines and structures ==========================================}

const
comptypeDIB = $20424944; // mmioFOURCC('D', 'I', 'B', ' ')

function AVIMakeCompressedStream(
var ppsCompressed : PAVISTREAM;
ppsSource : PAVISTREAM;
lpOptions : PAVICOMPRESSOPTIONS;
pclsidHandler : PCLSID
): HResult; stdcall;

// Non-portable: uses variable number of params
// EXTERN_C HRESULT CDECL AVISaveA (LPCSTR szFile,
// CLSID FAR *pclsidHandler,
// AVISAVECALLBACK lpfnCallback,
// int nStreams,
// PAVISTREAM pfile,
// LPAVICOMPRESSOPTIONS lpOptions,
// ...);

function AVISaveVA(
szFile : LPCSTR;
pclsidHandler : PCLSID;
lpfnCallback : TAVISAVECALLBACK;
nStreams : int;
var ppavi : PAVISTREAM;
var plpOptions : PAVICOMPRESSOPTIONS
): HResult; stdcall;

// Non-portable: uses variable number of params
// EXTERN_C HRESULT CDECL AVISaveW (LPCWSTR szFile,
// CLSID FAR *pclsidHandler,
// AVISAVECALLBACK lpfnCallback,
// int nStreams,
// PAVISTREAM pfile,
// LPAVICOMPRESSOPTIONS lpOptions,
// ...);

function AVISaveVW(
szFile : LPCWSTR;
pclsidHandler : PCLSID;
lpfnCallback : TAVISAVECALLBACK;
nStreams : int;
var ppavi : PAVISTREAM;
var plpOptions : PAVICOMPRESSOPTIONS
): HResult; stdcall;

// #define AVISave AVISaveA

function AVISaveV(
szFile : LPCSTR;
pclsidHandler : PCLSID;
lpfnCallback : TAVISAVECALLBACK;
nStreams : int;
var ppavi : PAVISTREAM;
var plpOptions : PAVICOMPRESSOPTIONS
): HResult; stdcall; // AVISaveVA

function AVISaveOptions(
hwnd : HWND;
uiFlags : UINT;
nStreams : int;
var ppavi : PAVISTREAM;
var plpOptions : PAVICOMPRESSOPTIONS
): BOOL; stdcall;

function AVISaveOptionsFree(nStreams: int; var plpOptions: PAVICOMPRESSOPTIONS): HResult; stdcall;

{-- FLAGS FOR uiFlags --------------------------------------------------------}

// Same as the flags for ICCompressorChoose (see compman.h)
// These determine what the compression options dialog for video streams
// will look like.

function AVIBuildFilterW(lpszFilter: LPWSTR; cbFilter: DWORD; fSaving: BOOL): HResult; stdcall;
function AVIBuildFilterA(lpszFilter: LPSTR; cbFilter: DWORD; fSaving: BOOL): HResult; stdcall;

function AVIBuildFilter(lpszFilter: LPSTR; cbFilter: DWORD; fSaving: BOOL): HResult; stdcall; // AVIBuildFilterA

function AVIMakeFileFromStreams(var ppfile: PAVIFILE; nStreams: int; var papStreams: PAVISTREAM): HResult; stdcall;

function AVIMakeStreamFromClipboard(cfFormat: UINT; hGlobal: THANDLE; var ppstream: PAVISTREAM): HResult; stdcall;

{-- Clipboard routines -------------------------------------------------------}

function AVIPutFileOnClipboard(pf: PAVIFILE): HResult; stdcall;
function AVIGetFromClipboard(var lppf: PAVIFILE): HResult; stdcall;
function AVIClearClipboard: HResult; stdcall;

{-- Editing routines ---------------------------------------------------------}

function CreateEditableStream(var ppsEditable: PAVISTREAM; psSource: PAVISTREAM): HResult; stdcall;

function EditStreamCut(pavi: PAVISTREAM; plStart, plLength: PDWORD; var ppResult: PAVISTREAM): HResult; stdcall;

function EditStreamCopy(pavi: PAVISTREAM; plStart, plLength: PDWORD; var ppResult: PAVISTREAM): HResult; stdcall;

function EditStreamPaste(pavi: PAVISTREAM; plPos, plLength: PDWORD; pstream: PAVISTREAM; lStart, lEnd: DWORD): HResult; stdcall;

function EditStreamClone(pavi: PAVISTREAM; var ppResult: PAVISTREAM): HResult; stdcall;

function EditStreamSetNameA(pavi: PAVISTREAM; lpszName: LPCSTR): HResult; stdcall;
function EditStreamSetNameW(pavi: PAVISTREAM; lpszName: LPCWSTR): HResult; stdcall;
function EditStreamSetInfoW(pavi: PAVISTREAM; lpInfo: PAVISTREAMINFOW; cbInfo: DWORD): HResult; stdcall;
function EditStreamSetInfoA(pavi: PAVISTREAM; lpInfo: PAVISTREAMINFOA; cbInfo: DWORD): HResult; stdcall;

function EditStreamSetInfo(pavi: PAVISTREAM; lpInfo: PAVISTREAMINFOA; cbInfo: DWORD): HResult; stdcall; // EditStreamSetInfoA
function EditStreamSetName(pavi: PAVISTREAM; lpszName: LPCSTR): HResult; stdcall; // EditStreamSetNameA

{-- Error handling -----------------------------------------------------------}

const
AVIERR_OK = 0;

// !!! Questions to be answered:
// How can you get a string form of these errors?
// Which of these errors should be replaced by errors in SCODE.H?

const
AVIERR_UNSUPPORTED = $80044065; // MAKE_AVIERR(101)
AVIERR_BADFORMAT = $80044066; // MAKE_AVIERR(102)
AVIERR_MEMORY = $80044067; // MAKE_AVIERR(103)
AVIERR_INTERNAL = $80044068; // MAKE_AVIERR(104)
AVIERR_BADFLAGS = $80044069; // MAKE_AVIERR(105)
AVIERR_BADPARAM = $8004406A; // MAKE_AVIERR(106)
AVIERR_BADSIZE = $8004406B; // MAKE_AVIERR(107)
AVIERR_BADHANDLE = $8004406C; // MAKE_AVIERR(108)
AVIERR_FILEREAD = $8004406D; // MAKE_AVIERR(109)
AVIERR_FILEWRITE = $8004406E; // MAKE_AVIERR(110)
AVIERR_FILEOPEN = $8004406F; // MAKE_AVIERR(111)
AVIERR_COMPRESSOR = $80044070; // MAKE_AVIERR(112)
AVIERR_NOCOMPRESSOR = $80044071; // MAKE_AVIERR(113)
AVIERR_READONLY = $80044072; // MAKE_AVIERR(114)
AVIERR_NODATA = $80044073; // MAKE_AVIERR(115)
AVIERR_BUFFERTOOSMALL = $80044074; // MAKE_AVIERR(116)
AVIERR_CANTCOMPRESS = $80044075; // MAKE_AVIERR(117)
AVIERR_USERABORT = $800440C6; // MAKE_AVIERR(198)
AVIERR_ERROR = $800440C7; // MAKE_AVIERR(199)

{== MCIWnd - Window class for MCI objects ====================================}

//
// MCIWnd
//
// MCIWnd window class header file.
//
// the MCIWnd window class is a window class for controling MCI devices
// MCI devices include, wave files, midi files, AVI Video, cd audio,
// vcr, video disc, and others..
//
// to learn more about MCI and mci command sets see the
// &quot;Microsoft Multimedia Programmers's guide&quot; in the Win31 SDK
//
// the easiest use of the MCIWnd class is like so:
//
// hwnd = MCIWndCreate(hwndParent, hInstance, 0, &quot;chimes.wav&quot;
// ...
// MCIWndPlay(hwnd);
// MCIWndStop(hwnd);
// MCIWndPause(hwnd);
// ....
// MCIWndDestroy(hwnd);
//
// this will create a window with a play/pause, stop and a playbar
// and start the wave file playing.
//
// mciwnd.h defines macros for all the most common MCI commands, but
// any string command can be used if needed.
//
// Note: unlike the mciSendString() API, no alias or file name needs
// to be specifed, since the device to use is implied by the window handle.
//
// MCIWndSendString(hwnd, &quot;setaudio stream to 2&quot;
//
// (C) Copyright Microsoft Corp. 1991-1995. All rights reserved.
//
// WIN32:
//
// MCIWnd supports both ansi and unicode interfaces. For any message that
// takes or returns a text string, two versions of the message are defined,
// appended with A or W for Ansi or Wide Char. The message or api itself
// is defined to be one or other of these depending on whether you have
// UNICODE defined in your application.
// Thus for the api MCIWndCreate, there are in fact two apis,
// MCIWndCreateA and MCIWndCreateW. If you call MCIWndCreate, this will be
// re-routed to MCIWndCreateA unless UNICODE is defined when building your
// application. In any one application, you can mix calls to the
// Ansi and Unicode entrypoints.
//
// If you use SendMessage instead of the macros below such as MCIWndOpen(),
// you will see that the messages have changed for WIN32, to support Ansi
// and Unicode entrypoints. In particular, MCI_OPEN has been replaced by
// MCWNDM_OPENA, or MCIWNDM_OPENW (MCIWNDM_OPEN is defined to be one or
// other of these).
//
// Also, note that the WIN32 implementation of MCIWnd uses UNICODE
// so all apis and messages supporting ANSI strings do so by mapping them
// UNICODE strings and then calling the corresponding UNICODE entrypoint.
//

function MCIWndSM(hWnd: HWND; Msg: UINT; wParam: WPARAM; lParam: LPARAM): DWORD;

const
MCIWND_WINDOW_CLASS = 'MCIWndClass' ;

function MCIWndCreateA(hwndParent: HWND; hInstance: HINST; dwStyle: DWORd; szFile: LPCSTR): HWND; cdecl;
function MCIWndCreateW(hwndParent: HWND; hInstance: HINST; dwStyle: DWORd; szFile: LPCWSTR): HWND; cdecl;

function MCIWndCreate(hwndParent: HWND; hInstance: HINST; dwStyle: DWORd; szFile: LPCSTR): HWND; cdecl; // MCIWndCreateA

function MCIWndRegisterClass: BOOL; cdecl;

{-- Flags for the MCIWndOpen command -----------------------------------------}

const
MCIWNDOPENF_NEW = $0001; // open a new file

{-- Window styles ------------------------------------------------------------}

MCIWNDF_NOAUTOSIZEWINDOW = $0001; // when movie size changes
MCIWNDF_NOPLAYBAR = $0002; // no toolbar
MCIWNDF_NOAUTOSIZEMOVIE = $0004; // when window size changes
MCIWNDF_NOMENU = $0008; // no popup menu from RBUTTONDOWN
MCIWNDF_SHOWNAME = $0010; // show name in caption
MCIWNDF_SHOWPOS = $0020; // show position in caption
MCIWNDF_SHOWMODE = $0040; // show mode in caption
MCIWNDF_SHOWALL = $0070; // show all

MCIWNDF_NOTIFYMODE = $0100; // tell parent of mode change
MCIWNDF_NOTIFYPOS = $0200; // tell parent of pos change
MCIWNDF_NOTIFYSIZE = $0400; // tell parent of size change
MCIWNDF_NOTIFYERROR = $1000; // tell parent of an error
MCIWNDF_NOTIFYALL = $1F00; // tell all

MCIWNDF_NOTIFYANSI = $0080;

// The MEDIA notification includes a text string.
// To receive notifications in ANSI instead of unicode set the
// MCIWNDF_NOTIFYANSI style bit. The macro below includes this bit
// by default unless you define UNICODE in your application.

MCIWNDF_NOTIFYMEDIAA = $0880; // tell parent of media change
MCIWNDF_NOTIFYMEDIAW = $0800; // tell parent of media change

MCIWNDF_NOTIFYMEDIA = MCIWNDF_NOTIFYMEDIAA;

MCIWNDF_RECORD = $2000; // Give a record button
MCIWNDF_NOERRORDLG = $4000; // Show Error Dlgs for MCI cmds?
MCIWNDF_NOOPEN = $8000; // Don't allow user to open things

{-- Can macros ---------------------------------------------------------------}

function MCIWndCanPlay(hwnd: HWND): BOOL;
function MCIWndCanRecord(hwnd: HWND): BOOL;
function MCIWndCanSave(hwnd: HWND): BOOL;
function MCIWndCanWindow(hwnd: HWND): BOOL;
function MCIWndCanEject(hwnd: HWND): BOOL;
function MCIWndCanConfig(hwnd: HWND): BOOL;
function MCIWndPaletteKick(hwnd: HWND): BOOL;

function MCIWndSave(hwnd: HWND; szFile: LPCSTR): DWORD;
function MCIWndSaveDialog(hwnd: HWND): DWORD;

// If you dont give a device it will use the current device....

function MCIWndNew(hwnd: HWND; lp: PVOID): DWORD;
function MCIWndRecord(hwnd: HWND): DWORD;
function MCIWndOpen(hwnd: HWND; sz: LPCSTR; f: BOOL): DWORD;
function MCIWndOpenDialog(hwnd: HWND): DWORD;
function MCIWndClose(hwnd: HWND): DWORD;
function MCIWndPlay(hwnd: HWND): DWORD;
function MCIWndStop(hwnd: HWND): DWORD;
function MCIWndPause(hwnd: HWND): DWORD;
function MCIWndResume(hwnd: HWND): DWORD;
function MCIWndSeek(hwnd: HWND; lPos: DWORD): DWORD;
function MCIWndEject(hwnd: HWND): DWORD;

function MCIWndHome(hwnd: HWND): DWORD;
function MCIWndEnd(hwnd: HWND): DWORD;

function MCIWndGetSource(hwnd: HWND; prc: PRECT): DWORD;
function MCIWndPutSource(hwnd: HWND; prc: PRECT): DWORD;

function MCIWndGetDest(hwnd: HWND; prc: PRECT): DWORD;
function MCIWndPutDest(hwnd: HWND; prc: PRECT): DWORD;

function MCIWndPlayReverse(hwnd: HWND): DWORD;
function MCIWndPlayFrom(hwnd: HWND; lPos: DWORD): DWORD;
function MCIWndPlayTo(hwnd: HWND; lPos: DWORD): DWORD;
function MCIWndPlayFromTo(hwnd: HWND; lStart, lEnd: DWORD): DWORD;

function MCIWndGetDeviceID(hwnd: HWND): UINT;
function MCIWndGetAlias(hwnd: HWND): UINT;
function MCIWndGetMode(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;
function MCIWndGetPosition(hwnd: HWND): DWORD;
function MCIWndGetPositionString(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;
function MCIWndGetStart(hwnd: HWND): DWORD;
function MCIWndGetLength(hwnd: HWND): DWORD;
function MCIWndGetEnd(hwnd: HWND): DWORD;

function MCIWndStep(hwnd: HWND; n: DWORD): DWORD;

procedure MCIWndDestroy(hwnd: HWND);
procedure MCIWndSetZoom(hwnd: HWND; iZoom: UINT);
function MCIWndGetZoom(hwnd: HWND): UINT;
function MCIWndSetVolume(hwnd: HWND; iVol: UINT): DWORD;
function MCIWndGetVolume(hwnd: HWND): DWORD;
function MCIWndSetSpeed(hwnd: HWND; iSpeed: UINT): DWORD;
function MCIWndGetSpeed(hwnd: HWND): DWORD;
function MCIWndSetTimeFormat(hwnd: HWND; lp: LPCSTR): DWORD;
function MCIWndGetTimeFormat(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;
procedure MCIWndValidateMedia(hwnd: HWND);

procedure MCIWndSetRepeat(hwnd: HWND; f: BOOL);
function MCIWndGetRepeat(hwnd: HWND): BOOL;

function MCIWndUseFrames(hwnd: HWND): DWORD;
function MCIWndUseTime(hwnd: HWND): DWORD;

procedure MCIWndSetActiveTimer(hwnd: HWND; active: UINT);
procedure MCIWndSetInactiveTimer(hwnd: HWND; inactive: UINT);
procedure MCIWndSetTimers(hwnd: HWND; active, inactive: UINT);
function MCIWndGetActiveTimer(hwnd: HWND): UINT;
function MCIWndGetInactiveTimer(hwnd: HWND): UINT;

function MCIWndRealize(hwnd: HWND; fBkgnd: BOOL): DWORD;

function MCIWndSendString(hwnd: HWND; sz: LPCSTR): DWORD;
function MCIWndReturnString(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;
function MCIWndGetError(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;

// #define MCIWndActivate(hwnd, f) (void)MCIWndSM(hwnd, WM_ACTIVATE, (WPARAM)(BOOL)(f), 0)

function MCIWndGetPalette(hwnd: HWND): HPALETTE;
function MCIWndSetPalette(hwnd: HWND; hpal: HPALETTE): DWORD;

function MCIWndGetFileName(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;
function MCIWndGetDevice(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;

function MCIWndGetStyles(hwnd: HWND): UINT;
function MCIWndChangeStyles(hwnd: HWND; mask: UINT; value: DWORD): DWORD;

type
PUnknown = ^IUnknown;

function MCIWndOpenInterface(hwnd: HWND; pUnk: PUnknown): DWORD;

function MCIWndSetOwner(hwnd: HWND; hwndP: HWND): DWORD;

{-- Messages an app will send to MCIWND --------------------------------------}

// all the text-related messages are defined out of order above (they need
// to be defined before the MCIWndOpen() macros

const
MCIWNDM_GETDEVICEID = WM_USER + 100;
MCIWNDM_GETSTART = WM_USER + 103;
MCIWNDM_GETLENGTH = WM_USER + 104;
MCIWNDM_GETEND = WM_USER + 105;
MCIWNDM_EJECT = WM_USER + 107;
MCIWNDM_SETZOOM = WM_USER + 108;
MCIWNDM_GETZOOM = WM_USER + 109;
MCIWNDM_SETVOLUME = WM_USER + 110;
MCIWNDM_GETVOLUME = WM_USER + 111;
MCIWNDM_SETSPEED = WM_USER + 112;
MCIWNDM_GETSPEED = WM_USER + 113;
MCIWNDM_SETREPEAT = WM_USER + 114;
MCIWNDM_GETREPEAT = WM_USER + 115;
MCIWNDM_REALIZE = WM_USER + 118;
MCIWNDM_VALIDATEMEDIA = WM_USER + 121;
MCIWNDM_PLAYFROM = WM_USER + 122;
MCIWNDM_PLAYTO = WM_USER + 123;
MCIWNDM_GETPALETTE = WM_USER + 126;
MCIWNDM_SETPALETTE = WM_USER + 127;
MCIWNDM_SETTIMERS = WM_USER + 129;
MCIWNDM_SETACTIVETIMER = WM_USER + 130;
MCIWNDM_SETINACTIVETIMER = WM_USER + 131;
MCIWNDM_GETACTIVETIMER = WM_USER + 132;
MCIWNDM_GETINACTIVETIMER = WM_USER + 133;
MCIWNDM_CHANGESTYLES = WM_USER + 135;
MCIWNDM_GETSTYLES = WM_USER + 136;
MCIWNDM_GETALIAS = WM_USER + 137;
MCIWNDM_PLAYREVERSE = WM_USER + 139;
MCIWNDM_GET_SOURCE = WM_USER + 140;
MCIWNDM_PUT_SOURCE = WM_USER + 141;
MCIWNDM_GET_DEST = WM_USER + 142;
MCIWNDM_PUT_DEST = WM_USER + 143;
MCIWNDM_CAN_PLAY = WM_USER + 144;
MCIWNDM_CAN_WINDOW = WM_USER + 145;
MCIWNDM_CAN_RECORD = WM_USER + 146;
MCIWNDM_CAN_SAVE = WM_USER + 147;
MCIWNDM_CAN_EJECT = WM_USER + 148;
MCIWNDM_CAN_CONFIG = WM_USER + 149;
MCIWNDM_PALETTEKICK = WM_USER + 150;
MCIWNDM_OPENINTERFACE = WM_USER + 151;
MCIWNDM_SETOWNER = WM_USER + 152;

{-- Define both A and W messages ---------------------------------------------}

MCIWNDM_SENDSTRINGA = WM_USER + 101;
MCIWNDM_GETPOSITIONA = WM_USER + 102;
MCIWNDM_GETMODEA = WM_USER + 106;
MCIWNDM_SETTIMEFORMATA = WM_USER + 119;
MCIWNDM_GETTIMEFORMATA = WM_USER + 120;
MCIWNDM_GETFILENAMEA = WM_USER + 124;
MCIWNDM_GETDEVICEA = WM_USER + 125;
MCIWNDM_GETERRORA = WM_USER + 128;
MCIWNDM_NEWA = WM_USER + 134;
MCIWNDM_RETURNSTRINGA = WM_USER + 138;
MCIWNDM_OPENA = WM_USER + 153;

MCIWNDM_SENDSTRINGW = WM_USER + 201;
MCIWNDM_GETPOSITIONW = WM_USER + 202;
MCIWNDM_GETMODEW = WM_USER + 206;
MCIWNDM_SETTIMEFORMATW = WM_USER + 219;
MCIWNDM_GETTIMEFORMATW = WM_USER + 220;
MCIWNDM_GETFILENAMEW = WM_USER + 224;
MCIWNDM_GETDEVICEW = WM_USER + 225;
MCIWNDM_GETERRORW = WM_USER + 228;
MCIWNDM_NEWW = WM_USER + 234;
MCIWNDM_RETURNSTRINGW = WM_USER + 238;
MCIWNDM_OPENW = WM_USER + 252;

{-- Map defaults to A --------------------------------------------------------}

MCIWNDM_SENDSTRING = MCIWNDM_SENDSTRINGA;
MCIWNDM_GETPOSITION = MCIWNDM_GETPOSITIONA;
MCIWNDM_GETMODE = MCIWNDM_GETMODEA;
MCIWNDM_SETTIMEFORMAT = MCIWNDM_SETTIMEFORMATA;
MCIWNDM_GETTIMEFORMAT = MCIWNDM_GETTIMEFORMATA;
MCIWNDM_GETFILENAME = MCIWNDM_GETFILENAMEA;
MCIWNDM_GETDEVICE = MCIWNDM_GETDEVICEA;
MCIWNDM_GETERROR = MCIWNDM_GETERRORA;
MCIWNDM_NEW = MCIWNDM_NEWA;
MCIWNDM_RETURNSTRING = MCIWNDM_RETURNSTRINGA;
MCIWNDM_OPEN = MCIWNDM_OPENA;

// note that the source text for MCIWND will thus contain
// support for eg MCIWNDM_SENDSTRING (both the 16-bit entrypoint and
// in win32 mapped to MCIWNDM_SENDSTRINGW), and MCIWNDM_SENDSTRINGA (the
// win32 ansi thunk).

{-- Messages MCIWND will send to an app --------------------------------------}

const
MCIWNDM_NOTIFYMODE = WM_USER + 200; // wp = hwnd, lp = mode
MCIWNDM_NOTIFYPOS = WM_USER + 201; // wp = hwnd, lp = pos
MCIWNDM_NOTIFYSIZE = WM_USER + 202; // wp = hwnd
MCIWNDM_NOTIFYMEDIA = WM_USER + 203; // wp = hwnd, lp = fn
MCIWNDM_NOTIFYERROR = WM_USER + 205; // wp = hwnd, lp = error

{-- Special seek values for START and END ------------------------------------}

MCIWND_START = -1 ;
MCIWND_END = -2 ;

{== VIDEO - Video capture driver interface ===================================}

type
HVIDEO = THandle;
PHVIDEO = ^HVIDEO;

{-- Error return values ------------------------------------------------------}

const
DV_ERR_OK = 0; // No error
DV_ERR_BASE = 1; // Error Base
DV_ERR_NONSPECIFIC = DV_ERR_BASE;
DV_ERR_BADFORMAT = DV_ERR_BASE + 1; // unsupported video format
DV_ERR_STILLPLAYING = DV_ERR_BASE + 2; // still something playing
DV_ERR_UNPREPARED = DV_ERR_BASE + 3; // header not prepared
DV_ERR_SYNC = DV_ERR_BASE + 4; // device is synchronous
DV_ERR_TOOMANYCHANNELS = DV_ERR_BASE + 5; // number of channels exceeded
DV_ERR_NOTDETECTED = DV_ERR_BASE + 6; // HW not detected
DV_ERR_BADINSTALL = DV_ERR_BASE + 7; // Can not get Profile
DV_ERR_CREATEPALETTE = DV_ERR_BASE + 8;
DV_ERR_SIZEFIELD = DV_ERR_BASE + 9;
DV_ERR_PARAM1 = DV_ERR_BASE + 10;
DV_ERR_PARAM2 = DV_ERR_BASE + 11;
DV_ERR_CONFIG1 = DV_ERR_BASE + 12;
DV_ERR_CONFIG2 = DV_ERR_BASE + 13;
DV_ERR_FLAGS = DV_ERR_BASE + 14;
DV_ERR_13 = DV_ERR_BASE + 15;

DV_ERR_NOTSUPPORTED = DV_ERR_BASE + 16; // function not suported
DV_ERR_NOMEM = DV_ERR_BASE + 17; // out of memory
DV_ERR_ALLOCATED = DV_ERR_BASE + 18; // device is allocated
DV_ERR_BADDEVICEID = DV_ERR_BASE + 19;
DV_ERR_INVALHANDLE = DV_ERR_BASE + 20;
DV_ERR_BADERRNUM = DV_ERR_BASE + 21;
DV_ERR_NO_BUFFERS = DV_ERR_BASE + 22; // out of buffers

DV_ERR_MEM_CONFLICT = DV_ERR_BASE + 23; // Mem conflict detected
DV_ERR_IO_CONFLICT = DV_ERR_BASE + 24; // I/O conflict detected
DV_ERR_DMA_CONFLICT = DV_ERR_BASE + 25; // DMA conflict detected
DV_ERR_INT_CONFLICT = DV_ERR_BASE + 26; // Interrupt conflict detected
DV_ERR_PROTECT_ONLY = DV_ERR_BASE + 27; // Can not run in standard mode
DV_ERR_LASTERROR = DV_ERR_BASE + 27;

DV_ERR_USER_MSG = DV_ERR_BASE + 1000; // Hardware specific errors

{-- Callback messages --------------------------------------------------------}

// Note that the values for all installable driver callback messages are
// identical, (ie. MM_DRVM_DATA has the same value for capture drivers,
// installable video codecs, and the audio compression manager).

const
DV_VM_OPEN = MM_DRVM_OPEN; // Obsolete messages
DV_VM_CLOSE = MM_DRVM_CLOSE;
DV_VM_DATA = MM_DRVM_DATA;
DV_VM_ERROR = MM_DRVM_ERROR;

{== Structures ===============================================================}

{-- Video data block header --------------------------------------------------}

type
PVIDEOHDR = ^TVIDEOHDR;
TVIDEOHDR = record
lpData : PBYTE; // pointer to locked data buffer
dwBufferLength : DWORD; // Length of data buffer
dwBytesUsed : DWORD; // Bytes actually used
dwTimeCaptured : DWORD; // Milliseconds from start of stream
dwUser : DWORD; // for client's use
dwFlags : DWORD; // assorted flags (see defines)
dwReserved : array[0..3] of DWORD; // reserved for driver
end;

{-- dwFlags field of VIDEOHDR ------------------------------------------------}

const
VHDR_DONE = $00000001; // Done bit
VHDR_PREPARED = $00000002; // Set if this header has been prepared
VHDR_INQUEUE = $00000004; // Reserved for driver
VHDR_KEYFRAME = $00000008; // Key Frame

{-- Channel capabilities structure -------------------------------------------}

type
PCHANNEL_CAPS = ^TCHANNEL_CAPS;
TCHANNEL_CAPS = record
dwFlags : DWORD; // Capability flags
dwSrcRectXMod : DWORD; // Granularity of src rect in x
dwSrcRectYMod : DWORD; // Granularity of src rect in y
dwSrcRectWidthMod : DWORD; // Granularity of src rect width
dwSrcRectHeightMod : DWORD; // Granularity of src rect height
dwDstRectXMod : DWORD; // Granularity of dst rect in x
dwDstRectYMod : DWORD; // Granularity of dst rect in y
dwDstRectWidthMod : DWORD; // Granularity of dst rect width
dwDstRectHeightMod : DWORD; // Granularity of dst rect height
end;

{-- dwFlags of CHANNEL_CAPS --------------------------------------------------}

const
VCAPS_OVERLAY = $00000001; // overlay channel
VCAPS_SRC_CAN_CLIP = $00000002; // src rect can clip
VCAPS_DST_CAN_CLIP = $00000004; // dst rect can clip
VCAPS_CAN_SCALE = $00000008; // allows src != dst

{== API flags ================================================================}

{-- Types of channels to open with the videoOpen function --------------------}

const
VIDEO_EXTERNALIN = $0001;
VIDEO_EXTERNALOUT = $0002;
VIDEO_IN = $0004;
VIDEO_OUT = $0008;

{-- Is a driver dialog available for this channel ----------------------------}

VIDEO_DLG_QUERY = $0010;

{-- videoConfigure (both GET and SET) ----------------------------------------}

VIDEO_CONFIGURE_QUERY = $8000;

{-- videoConfigure (SET only) ------------------------------------------------}

VIDEO_CONFIGURE_SET = $1000;

{-- videoConfigure (GET only) ------------------------------------------------}

VIDEO_CONFIGURE_GET = $2000;
VIDEO_CONFIGURE_QUERYSIZE = $0001;

VIDEO_CONFIGURE_CURRENT = $0010;
VIDEO_CONFIGURE_NOMINAL = $0020;
VIDEO_CONFIGURE_MIN = $0040;
VIDEO_CONFIGURE_MAX = $0080;

{== Configure messages =======================================================}

DVM_USER = $4000;

DVM_CONFIGURE_START = $1000;
DVM_CONFIGURE_END = $1FFF;

DVM_PALETTE = DVM_CONFIGURE_START + 1;
DVM_FORMAT = DVM_CONFIGURE_START + 2;
DVM_PALETTERGB555 = DVM_CONFIGURE_START + 3;
DVM_SRC_RECT = DVM_CONFIGURE_START + 4;
DVM_DST_RECT = DVM_CONFIGURE_START + 5;

{== AVICAP - Window class for AVI capture ====================================}

function AVICapSM(hwnd: HWND; m: UINT; w: WPARAM; l: LPARAM): DWORD;

{-- Window messages WM_CAP... which can be sent to an AVICAP window ----------}

// UNICODE
//
// The Win32 version of AVICAP on NT supports UNICODE applications:
// for each API or message that takes a char or string parameter, there are
// two versions, ApiNameA and ApiNameW. The default name ApiName is #defined
// to one or other depending on whether UNICODE is defined. Apps can call
// the A and W apis directly, and mix them.
//
// The 32-bit AVICAP on NT uses unicode exclusively internally.
// ApiNameA() will be implemented as a call to ApiNameW() together with
// translation of strings.

// Defines start of the message range
const
WM_CAP_START = WM_USER;
WM_CAP_UNICODE_START = WM_USER + 100;

WM_CAP_GET_CAPSTREAMPTR = WM_CAP_START + 1;

WM_CAP_SET_CALLBACK_ERRORW = WM_CAP_UNICODE_START + 2;
WM_CAP_SET_CALLBACK_STATUSW = WM_CAP_UNICODE_START + 3;
WM_CAP_SET_CALLBACK_ERRORA = WM_CAP_START + 2;
WM_CAP_SET_CALLBACK_STATUSA = WM_CAP_START + 3;
WM_CAP_SET_CALLBACK_ERROR = WM_CAP_SET_CALLBACK_ERRORA;
WM_CAP_SET_CALLBACK_STATUS = WM_CAP_SET_CALLBACK_STATUSA;

WM_CAP_SET_CALLBACK_YIELD = WM_CAP_START + 4;
WM_CAP_SET_CALLBACK_FRAME = WM_CAP_START + 5;
WM_CAP_SET_CALLBACK_VIDEOSTREAM = WM_CAP_START + 6;
WM_CAP_SET_CALLBACK_WAVESTREAM = WM_CAP_START + 7;
WM_CAP_GET_USER_DATA = WM_CAP_START + 8;
WM_CAP_SET_USER_DATA = WM_CAP_START + 9;

WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10;
WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11;

WM_CAP_DRIVER_GET_NAMEA = WM_CAP_START + 12;
WM_CAP_DRIVER_GET_VERSIONA = WM_CAP_START + 13;
WM_CAP_DRIVER_GET_NAMEW = WM_CAP_UNICODE_START + 12;
WM_CAP_DRIVER_GET_VERSIONW = WM_CAP_UNICODE_START + 13;
WM_CAP_DRIVER_GET_NAME = WM_CAP_DRIVER_GET_NAMEA;
WM_CAP_DRIVER_GET_VERSION = WM_CAP_DRIVER_GET_VERSIONA;

WM_CAP_DRIVER_GET_CAPS = WM_CAP_START + 14;

WM_CAP_FILE_SET_CAPTURE_FILEA = WM_CAP_START + 20;
WM_CAP_FILE_GET_CAPTURE_FILEA = WM_CAP_START + 21;
WM_CAP_FILE_SAVEASA = WM_CAP_START + 23;
WM_CAP_FILE_SAVEDIBA = WM_CAP_START + 25;
WM_CAP_FILE_SET_CAPTURE_FILEW = WM_CAP_UNICODE_START + 20;
WM_CAP_FILE_GET_CAPTURE_FILEW = WM_CAP_UNICODE_START + 21;
WM_CAP_FILE_SAVEASW = WM_CAP_UNICODE_START + 23;
WM_CAP_FILE_SAVEDIBW = WM_CAP_UNICODE_START + 25;
WM_CAP_FILE_SET_CAPTURE_FILE = WM_CAP_FILE_SET_CAPTURE_FILEA;
WM_CAP_FILE_GET_CAPTURE_FILE = WM_CAP_FILE_GET_CAPTURE_FILEA;
WM_CAP_FILE_SAVEAS = WM_CAP_FILE_SAVEASA;
WM_CAP_FILE_SAVEDIB = WM_CAP_FILE_SAVEDIBA;

// out of order to save on ifdefs

WM_CAP_FILE_ALLOCATE = WM_CAP_START + 22;
WM_CAP_FILE_SET_INFOCHUNK = WM_CAP_START + 24;

WM_CAP_EDIT_COPY = WM_CAP_START + 30;

WM_CAP_SET_AUDIOFORMAT = WM_CAP_START + 35;
WM_CAP_GET_AUDIOFORMAT = WM_CAP_START + 36;

WM_CAP_DLG_VIDEOFORMAT = WM_CAP_START + 41;
WM_CAP_DLG_VIDEOSOURCE = WM_CAP_START + 42;
WM_CAP_DLG_VIDEODISPLAY = WM_CAP_START + 43;
WM_CAP_GET_VIDEOFORMAT = WM_CAP_START + 44;
WM_CAP_SET_VIDEOFORMAT = WM_CAP_START + 45;
WM_CAP_DLG_VIDEOCOMPRESSION = WM_CAP_START + 46;

WM_CAP_SET_PREVIEW = WM_CAP_START + 50;
WM_CAP_SET_OVERLAY = WM_CAP_START + 51;
WM_CAP_SET_PREVIEWRATE = WM_CAP_START + 52;
WM_CAP_SET_SCALE = WM_CAP_START + 53;
WM_CAP_GET_STATUS = WM_CAP_START + 54;
WM_CAP_SET_SCROLL = WM_CAP_START + 55;

WM_CAP_GRAB_FRAME = WM_CAP_START + 60;
WM_CAP_GRAB_FRAME_NOSTOP = WM_CAP_START + 61;

WM_CAP_SEQUENCE = WM_CAP_START + 62;
WM_CAP_SEQUENCE_NOFILE = WM_CAP_START + 63;
WM_CAP_SET_SEQUENCE_SETUP = WM_CAP_START + 64;
WM_CAP_GET_SEQUENCE_SETUP = WM_CAP_START + 65;

WM_CAP_SET_MCI_DEVICEA = WM_CAP_START + 66;
WM_CAP_GET_MCI_DEVICEA = WM_CAP_START + 67;
WM_CAP_SET_MCI_DEVICEW = WM_CAP_UNICODE_START + 66;
WM_CAP_GET_MCI_DEVICEW = WM_CAP_UNICODE_START + 67;
WM_CAP_SET_MCI_DEVICE = WM_CAP_SET_MCI_DEVICEA;
WM_CAP_GET_MCI_DEVICE = WM_CAP_GET_MCI_DEVICEA;

WM_CAP_STOP = WM_CAP_START + 68;
WM_CAP_ABORT = WM_CAP_START + 69;

WM_CAP_SINGLE_FRAME_OPEN = WM_CAP_START + 70;
WM_CAP_SINGLE_FRAME_CLOSE = WM_CAP_START + 71;
WM_CAP_SINGLE_FRAME = WM_CAP_START + 72;

WM_CAP_PAL_OPENA = WM_CAP_START + 80;
WM_CAP_PAL_SAVEA = WM_CAP_START + 81;
WM_CAP_PAL_OPENW = WM_CAP_UNICODE_START + 80;
WM_CAP_PAL_SAVEW = WM_CAP_UNICODE_START + 81;
WM_CAP_PAL_OPEN = WM_CAP_PAL_OPENA;
WM_CAP_PAL_SAVE = WM_CAP_PAL_SAVEA;

WM_CAP_PAL_PASTE = WM_CAP_START + 82;
WM_CAP_PAL_AUTOCREATE = WM_CAP_START + 83;
WM_CAP_PAL_MANUALCREATE = WM_CAP_START + 84;

// Following added post VFW 1.1

WM_CAP_SET_CALLBACK_CAPCONTROL = WM_CAP_START + 85;

// Defines end of the message range

WM_CAP_UNICODE_END = WM_CAP_PAL_SAVEW;
WM_CAP_END = WM_CAP_UNICODE_END;

{-- Callback definitions -----------------------------------------------------}

type
TCAPYIELDCALLBACK = function(hWnd: HWND): DWORD; stdcall;

TCAPSTATUSCALLBACKW = function(hWnd: HWND; nID: int; lpsz: LPCWSTR): DWORD; stdcall;
TCAPERRORCALLBACKW = function(hWnd: HWND; nID: int; lpsz: LPCWSTR): DWORD; stdcall;
TCAPSTATUSCALLBACKA = function(hWnd: HWND; nID: int; lpsz: LPCSTR): DWORD; stdcall;
TCAPERRORCALLBACKA = function(hWnd: HWND; nID: int; lpsz: LPCSTR): DWORD; stdcall;

TCAPSTATUSCALLBACK = TCAPSTATUSCALLBACKA;
TCAPERRORCALLBACK = TCAPERRORCALLBACKA;

TCAPVIDEOCALLBACK = function(hWnd: HWND; lpVHdr: PVIDEOHDR): DWORD; stdcall;
TCAPWAVECALLBACK = function(hWnd: HWND; lpWHdr: PWAVEHDR): DWORD; stdcall;
TCAPCONTROLCALLBACK = function(hWnd: HWND; nState: int): DWORD; stdcall;

{-- Structures ---------------------------------------------------------------}

type
PCAPDRIVERCAPS = ^TCAPDRIVERCAPS;
TCAPDRIVERCAPS = record
wDeviceIndex : UINT; // Driver index in system.ini
fHasOverlay : BOOL; // Can device overlay?
fHasDlgVideoSource : BOOL; // Has Video source dlg?
fHasDlgVideoFormat : BOOL; // Has Format dlg?
fHasDlgVideoDisplay : BOOL; // Has External out dlg?
fCaptureInitialized : BOOL; // Driver ready to capture?
fDriverSuppliesPalettes : BOOL; // Can driver make palettes?

// following always NULL on Win32.
hVideoIn : THANDLE; // Driver In channel
hVideoOut : THANDLE; // Driver Out channel
hVideoExtIn : THANDLE; // Driver Ext In channel
hVideoExtOut : THANDLE; // Driver Ext Out channel
end;

PCAPSTATUS = ^TCAPSTATUS;
TCAPSTATUS = record
uiImageWidth : UINT ; // Width of the image
uiImageHeight : UINT ; // Height of the image
fLiveWindow : BOOL ; // Now Previewing video?
fOverlayWindow : BOOL ; // Now Overlaying video?
fScale : BOOL ; // Scale image to client?
ptScroll : TPOINT ; // Scroll position
fUsingDefaultPalette : BOOL ; // Using default driver palette?
fAudioHardware : BOOL ; // Audio hardware present?
fCapFileExists : BOOL ; // Does capture file exist?
dwCurrentVideoFrame : DWORD ; // # of video frames cap'td
dwCurrentVideoFramesDropped : DWORD ; // # of video frames dropped
dwCurrentWaveSamples : DWORD ; // # of wave samples cap'td
dwCurrentTimeElapsedMS : DWORD ; // Elapsed capture duration
hPalCurrent : HPALETTE; // Current palette in use
fCapturingNow : BOOL ; // Capture in progress?
dwReturn : DWORD ; // Error value after any operation
wNumVideoAllocated : UINT ; // Actual number of video buffers
wNumAudioAllocated : UINT ; // Actual number of audio buffers
end;

// Default values in parenthesis

PCAPTUREPARMS = ^TCAPTUREPARMS;
TCAPTUREPARMS = record
dwRequestMicroSecPerFrame : DWORD ; // Requested capture rate
fMakeUserHitOKToCapture : BOOL ; // Show &quot;Hit OK to cap&quot; dlg?
wPercentDropForError : UINT ; // Give error msg if > (10%)
fYield : BOOL ; // Capture via background task?
dwIndexSize : DWORD ; // Max index size in frames (32K)
wChunkGranularity : UINT ; // Junk chunk granularity (2K)
fUsingDOSMemory : BOOL ; // Use DOS buffers?
wNumVideoRequested : UINT ; // # video buffers, If 0, autocalc
fCaptureAudio : BOOL ; // Capture audio?
wNumAudioRequested : UINT ; // # audio buffers, If 0, autocalc
vKeyAbort : UINT ; // Virtual key causing abort
fAbortLeftMouse : BOOL ; // Abort on left mouse?
fAbortRightMouse : BOOL ; // Abort on right mouse?
fLimitEnabled : BOOL ; // Use wTimeLimit?
wTimeLimit : UINT ; // Seconds to capture
fMCIControl : BOOL ; // Use MCI video source?
fStepMCIDevice : BOOL ; // Step MCI device?
dwMCIStartTime : DWORD ; // Time to start in MS
dwMCIStopTime : DWORD ; // Time to stop in MS
fStepCaptureAt2x : BOOL ; // Perform spatial averaging 2x
wStepCaptureAverageFrames : UINT ; // Temporal average n Frames
dwAudioBufferSize : DWORD ; // Size of audio bufs (0 = default)
fDisableWriteCache : BOOL ; // Attempt to disable write cache
AVStreamMaster : UINT ; // Which stream controls length?
end;

{-- AVStreamMaster -----------------------------------------------------------}

// Since Audio and Video streams generally use non-synchronized capture
// clocks, this flag determines whether the audio stream is to be considered
// the master or controlling clock when writing the AVI file:
//
// AVSTREAMMASTER_AUDIO - Audio is master, video frame duration is forced
// to match audio duration (VFW 1.0, 1.1 default)
// AVSTREAMMASTER_NONE - No master, audio and video streams may be of
// different lengths

const
AVSTREAMMASTER_AUDIO = 0; // Audio master (VFW 1.0, 1.1)
AVSTREAMMASTER_NONE = 1; // No master

type
PCAPINFOCHUNK = ^TCAPINFOCHUNK;
TCAPINFOCHUNK = record
fccInfoID : FOURCC; // Chunk ID, &quot;ICOP&quot; for copyright
lpData : PVOID; // pointer to data
cbData : DWORD; // size of lpData
end;

{-- CapControlCallback states ------------------------------------------------}

const
CONTROLCALLBACK_PREROLL = 1; // Waiting to start capture
CONTROLCALLBACK_CAPTURING = 2; // Now capturing

{-- Message crackers for above -----------------------------------------------}

// message wrapper macros are defined for the default messages only. Apps
// that wish to mix Ansi and UNICODE message sending will have to
// reference the _A and _W messages directly

function capSetCallbackOnError(hwnd: HWND; fpProc: TCAPERRORCALLBACK): BOOL;
function capSetCallbackOnStatus(hwnd: HWND; fpProc: TCAPSTATUSCALLBACK): BOOL;
function capSetCallbackOnYield(hwnd: HWND; fpProc: TCAPYIELDCALLBACK): BOOL;
function capSetCallbackOnFrame(hwnd: HWND; fpProc: TCAPVIDEOCALLBACK): BOOL;
function capSetCallbackOnVideoStream(hwnd: HWND; fpProc: TCAPVIDEOCALLBACK): BOOL;
function capSetCallbackOnWaveStream(hwnd: HWND; fpProc: TCAPWAVECALLBACK): BOOL;
function capSetCallbackOnCapControl(hwnd: HWND; fpProc: TCAPCONTROLCALLBACK): BOOL;

function capSetUserData(hwnd: HWND; lUser: DWORD): BOOL;
function capGetUserData(hwnd: HWND): DWORD;

function capDriverConnect(hwnd: HWND; i: INT): BOOL;
function capDriverDisconnect(hwnd: HWND): BOOL;
function capDriverGetName(hwnd: HWND; szName: LPSTR; wSize: WORD): BOOL;
function capDriverGetVersion(hwnd: HWND; szVer: LPSTR; wSize: WORD): BOOL;
function capDriverGetCaps(hwnd: HWND; s: PCAPDRIVERCAPS; wSize: WORD): BOOL;

function capFileSetCaptureFile(hwnd: HWND; szName: LPCSTR): BOOL;
function capFileGetCaptureFile(hwnd: HWND; szName: LPSTR; wSize: WORD): BOOL;
function capFileAlloc(hwnd: HWND; dwSize: DWORD): BOOL;
function capFileSaveAs(hwnd: HWND; szName: LPCSTR): BOOL;
function capFileSetInfoChunk(hwnd: HWND; lpInfoChunk: PCAPINFOCHUNK): BOOL;
function capFileSaveDIB(hwnd: HWND; szName: LPCSTR): BOOL;

function capEditCopy(hwnd: HWND): BOOL;

function capSetAudioFormat(hwnd: HWND; s: PWAVEFORMATEX; wSize: WORD): BOOL;
function capGetAudioFormat(hwnd: HWND; s: PWAVEFORMATEX; wSize: WORD): DWORD;
function capGetAudioFormatSize(hwnd: HWND): DWORD;

function capDlgVideoFormat(hwnd: HWND): BOOL;
function capDlgVideoSource(hwnd: HWND): BOOL;
function capDlgVideoDisplay(hwnd: HWND): BOOL;
function capDlgVideoCompression(hwnd: HWND): BOOL;

function capGetVideoFormat(hwnd: HWND; s: PVOID; wSize: WORD): DWORD;
function capGetVideoFormatSize(hwnd: HWND): DWORD;
function capSetVideoFormat(hwnd: HWND; s: PVOID; wSize: WORD): BOOL;

function capPreview(hwnd: HWND; f: BOOL): BOOL;
function capPreviewRate(hwnd: HWND; wMS: WORD): BOOL;
function capOverlay(hwnd: HWND; f: BOOL): BOOL;
function capPreviewScale(hwnd: HWND; f: BOOL): BOOL;
function capGetStatus(hwnd: HWND; s: PCAPSTATUS; wSize: WORD): BOOL;
function capSetScrollPos(hwnd: HWND; lpP: PPOINT): BOOL;

function capGrabFrame(hwnd: HWND): BOOL;
function capGrabFrameNoStop(hwnd: HWND): BOOL;

function capCaptureSequence(hwnd: HWND): BOOL;
function capCaptureSequenceNoFile(hwnd: HWND): BOOL;
function capCaptureStop(hwnd: HWND): BOOL;
function capCaptureAbort(hwnd: HWND): BOOL;

function capCaptureSingleFrameOpen(hwnd: HWND): BOOL;
function capCaptureSingleFrameClose(hwnd: HWND): BOOL;
function capCaptureSingleFrame(hwnd: HWND): BOOL;

function capCaptureGetSetup(hwnd: HWND; s: PCAPTUREPARMS; wSize: WORD): BOOL;
function capCaptureSetSetup(hwnd: HWND; s: PCAPTUREPARMS; wSize: WORD): BOOL;

function capSetMCIDeviceName(hwnd: HWND; szName: LPCSTR): BOOL;
function capGetMCIDeviceName(hwnd: HWND; szName: LPSTR; wSize: WORD): BOOL;

function capPaletteOpen(hwnd: HWND; szName: LPCSTR): BOOL;
function capPaletteSave(hwnd: HWND; szName: LPCSTR): BOOL;
function capPalettePaste(hwnd: HWND): BOOL;
function capPaletteAuto(hwnd: HWND; iFrames, iColors: INT): BOOL;
function capPaletteManual(hwnd: HWND; fGrab: BOOL; iColors: INT): BOOL;

{-- The only exported functions from AVICAP.DLL ------------------------------}

function capCreateCaptureWindowA(
lpszWindowName : LPCSTR;
dwStyle : DWORD;
x, y : int;
nWidth, nHeight : int;
hwndParent : HWND;
nID : int
): HWND; stdcall;

function capGetDriverDescriptionA(
wDriverIndex : UINT;
lpszName : LPSTR;
cbName : int;
lpszVer : LPSTR;
cbVer : int
): BOOL; stdcall;

function capCreateCaptureWindowW(
lpszWindowName : LPCWSTR;
dwStyle : DWORD;
x, y : int;
nWidth, nHeight : int;
hwndParent : HWND;
nID : int
): HWND; stdcall;

function capGetDriverDescriptionW(
wDriverIndex : UINT;
lpszName : LPWSTR;
cbName : int;
lpszVer : LPWSTR;
cbVer : int
): BOOL; stdcall;

function capCreateCaptureWindow(
lpszWindowName : LPCSTR;
dwStyle : DWORD;
x, y : int;
nWidth, nHeight : int;
hwndParent : HWND;
nID : int
): HWND; stdcall; // capCreateCaptureWindowA

function capGetDriverDescription(
wDriverIndex : UINT;
lpszName : LPSTR;
cbName : int;
lpszVer : LPSTR;
cbVer : int
): BOOL; stdcall; // capGetDriverDescriptionA

{-- New information chunk IDs ------------------------------------------------}

const
infotypeDIGITIZATION_TIME = $54494449; // mmioFOURCC ('I','D','I','T')
infotypeSMPTE_TIME = $504D5349; // mmioFOURCC ('I','S','M','P')

{-- String IDs from status and error callbacks -------------------------------}

IDS_CAP_BEGIN = 300; // &quot;Capture Start&quot;
IDS_CAP_END = 301; // &quot;Capture End&quot;

IDS_CAP_INFO = 401; // &quot;%s&quot;
IDS_CAP_OUTOFMEM = 402; // &quot;Out of memory&quot;
IDS_CAP_FILEEXISTS = 403; // &quot;File '%s' exists -- overwrite it?&quot;
IDS_CAP_ERRORPALOPEN = 404; // &quot;Error opening palette '%s'&quot;
IDS_CAP_ERRORPALSAVE = 405; // &quot;Error saving palette '%s'&quot;
IDS_CAP_ERRORDIBSAVE = 406; // &quot;Error saving frame '%s'&quot;
IDS_CAP_DEFAVIEXT = 407; // &quot;avi&quot;
IDS_CAP_DEFPALEXT = 408; // &quot;pal&quot;
IDS_CAP_CANTOPEN = 409; // &quot;Cannot open '%s'&quot;
IDS_CAP_SEQ_MSGSTART = 410; // &quot;Select OK to start capture/nof video sequence/nto %s.&quot;
IDS_CAP_SEQ_MSGSTOP = 411; // &quot;Hit ESCAPE or click to end capture&quot;

IDS_CAP_VIDEDITERR = 412; // &quot;An error occurred while trying to run VidEdit.&quot;
IDS_CAP_READONLYFILE = 413; // &quot;The file '%s' is a read-only file.&quot;
IDS_CAP_WRITEERROR = 414; // &quot;Unable to write to file '%s'./nDisk may be full.&quot;
IDS_CAP_NODISKSPACE = 415; // &quot;There is no space to create a capture file on the specified device.&quot;
IDS_CAP_SETFILESIZE = 416; // &quot;Set File Size&quot;
IDS_CAP_SAVEASPERCENT = 417; // &quot;SaveAs: %2ld%% Hit Escape to abort.&quot;

IDS_CAP_DRIVER_ERROR = 418; // Driver specific error message

IDS_CAP_WAVE_OPEN_ERROR = 419; // &quot;Error: Cannot open the wave input device./nCheck sample size, frequency, and channels.&quot;
IDS_CAP_WAVE_ALLOC_ERROR = 420; // &quot;Error: Out of memory for wave buffers.&quot;
IDS_CAP_WAVE_PREPARE_ERROR = 421; // &quot;Error: Cannot prepare wave buffers.&quot;
IDS_CAP_WAVE_ADD_ERROR = 422; // &quot;Error: Cannot add wave buffers.&quot;
IDS_CAP_WAVE_SIZE_ERROR = 423; // &quot;Error: Bad wave size.&quot;

IDS_CAP_VIDEO_OPEN_ERROR = 424; // &quot;Error: Cannot open the video input device.&quot;
IDS_CAP_VIDEO_ALLOC_ERROR = 425; // &quot;Error: Out of memory for video buffers.&quot;
IDS_CAP_VIDEO_PREPARE_ERROR = 426; // &quot;Error: Cannot prepare video buffers.&quot;
IDS_CAP_VIDEO_ADD_ERROR = 427; // &quot;Error: Cannot add video buffers.&quot;
IDS_CAP_VIDEO_SIZE_ERROR = 428; // &quot;Error: Bad video size.&quot;

IDS_CAP_FILE_OPEN_ERROR = 429; // &quot;Error: Cannot open capture file.&quot;
IDS_CAP_FILE_WRITE_ERROR = 430; // &quot;Error: Cannot write to capture file. Disk may be full.&quot;
IDS_CAP_RECORDING_ERROR = 431; // &quot;Error: Cannot write to capture file. Data rate too high or disk full.&quot;
IDS_CAP_RECORDING_ERROR2 = 432; // &quot;Error while recording&quot;
IDS_CAP_AVI_INIT_ERROR = 433; // &quot;Error: Unable to initialize for capture.&quot;
IDS_CAP_NO_FRAME_CAP_ERROR = 434; // &quot;Warning: No frames captured./nConfirm that vertical sync interrupts/nare configured and enabled.&quot;
IDS_CAP_NO_PALETTE_WARN = 435; // &quot;Warning: Using default palette.&quot;
IDS_CAP_MCI_CONTROL_ERROR = 436; // &quot;Error: Unable to access MCI device.&quot;
IDS_CAP_MCI_CANT_STEP_ERROR = 437; // &quot;Error: Unable to step MCI device.&quot;
IDS_CAP_NO_AUDIO_CAP_ERROR = 438; // &quot;Error: No audio data captured./nCheck audio card settings.&quot;
IDS_CAP_AVI_DRAWDIB_ERROR = 439; // &quot;Error: Unable to draw this data format.&quot;
IDS_CAP_COMPRESSOR_ERROR = 440; // &quot;Error: Unable to initialize compressor.&quot;
IDS_CAP_AUDIO_DROP_ERROR = 441; // &quot;Error: Audio data was lost during capture, reduce capture rate.&quot;

{-- Status string IDs --------------------------------------------------------}

IDS_CAP_STAT_LIVE_MODE = 500; // &quot;Live window&quot;
IDS_CAP_STAT_OVERLAY_MODE = 501; // &quot;Overlay window&quot;
IDS_CAP_STAT_CAP_INIT = 502; // &quot;Setting up for capture - Please wait&quot;
IDS_CAP_STAT_CAP_FINI = 503; // &quot;Finished capture, now writing frame %ld&quot;
IDS_CAP_STAT_PALETTE_BUILD = 504; // &quot;Building palette map&quot;
IDS_CAP_STAT_OPTPAL_BUILD = 505; // &quot;Computing optimal palette&quot;
IDS_CAP_STAT_I_FRAMES = 506; // &quot;%d frames&quot;
IDS_CAP_STAT_L_FRAMES = 507; // &quot;%ld frames&quot;
IDS_CAP_STAT_CAP_L_FRAMES = 508; // &quot;Captured %ld frames&quot;
IDS_CAP_STAT_CAP_AUDIO = 509; // &quot;Capturing audio&quot;
IDS_CAP_STAT_VIDEOCURRENT = 510; // &quot;Captured %ld frames (%ld dropped) %d.%03d sec.&quot;
IDS_CAP_STAT_VIDEOAUDIO = 511; // &quot;Captured %d.%03d sec. %ld frames (%ld dropped) (%d.%03d fps). %ld audio bytes (%d,%03d sps)&quot;
IDS_CAP_STAT_VIDEOONLY = 512; // &quot;Captured %d.%03d sec. %ld frames (%ld dropped) (%d.%03d fps)&quot;
IDS_CAP_STAT_FRAMESDROPPED = 513; // &quot;Dropped %ld of %ld frames (%d.%02d%%) during capture.&quot;

{== FilePreview dialog =======================================================}

function GetOpenFileNamePreviewA(lpofn: POPENFILENAMEA): BOOL; stdcall;
function GetSaveFileNamePreviewA(lpofn: POPENFILENAMEA): BOOL; stdcall;

function GetOpenFileNamePreviewW(lpofn: POPENFILENAMEW): BOOL; stdcall;
function GetSaveFileNamePreviewW(lpofn: POPENFILENAMEW): BOOL; stdcall;

function GetOpenFileNamePreview(lpofn: POPENFILENAMEA): BOOL; stdcall; // GetOpenFileNamePreviewA
function GetSaveFileNamePreview(lpofn: POPENFILENAMEA): BOOL; stdcall; // GetSaveFileNamePreviewA

implementation

function MKFOURCC( ch0, ch1, ch2, ch3: Char ): FOURCC;
begin
Result := (DWord(Ord(ch0))) or
(DWord(Ord(ch1)) shl 8) or
(DWord(Ord(ch2)) shl 16) or
(DWord(Ord(ch3)) shl 24);
end;

function mmioFOURCC( ch0, ch1, ch2, ch3: Char ): FOURCC;
begin
Result := MKFOURCC(ch0,ch1,ch2,ch3);
end;

function aviTWOCC(ch0, ch1: Char): TWOCC;
begin
Result := (Word(Ord(ch0))) or
(Word(Ord(ch1)) shl 8);
end;

{-- Query macros -------------------------------------------------------------}

function ICQueryAbout(hic: HIC): BOOL;
begin
Result := ICSendMessage(hic, ICM_ABOUT, Uint(-1), ICMF_ABOUT_QUERY) = ICERR_OK;
end;

function ICAbout(hic: HIC; hwnd: HWND): DWORD;
begin
Result := ICSendMessage(hic, ICM_ABOUT, hwnd, 0);
end;

function ICQueryConfigure(hic: HIC): BOOL;
begin
Result := ICSendMessage(hic, ICM_CONFIGURE, Uint(-1), ICMF_CONFIGURE_QUERY) = ICERR_OK;
end;

function ICConfigure(hic: HIC; hwnd: HWND): DWORD;
begin
Result := ICSendMessage(hic, ICM_CONFIGURE, hwnd, 0);
end;

{-- Get/Set state macros -----------------------------------------------------}

function ICGetState(hic: HIC; pv: PVOID; cb: DWORD): DWORD;
begin
Result := ICSendMessage(hic, ICM_GETSTATE, DWORD(pv), cb);
end;

function ICSetState(hic: HIC; pv: PVOID; cb: DWORD): DWORD;
begin
Result := ICSendMessage(hic, ICM_SETSTATE, DWORD(pv), cb);
end;

function ICGetStateSize(hic: HIC): DWORD;
begin
Result := ICGetState(hic, nil, 0);
end;

{-- Get value macros ---------------------------------------------------------}

function ICGetDefaultQuality(hic: HIC): DWORD;
begin
ICSendMessage(hic, ICM_GETDEFAULTQUALITY, DWORD(@Result), sizeof(Result));
end;

function ICGetDefaultKeyFrameRate(hic: HIC): DWORD;
begin
ICSendMessage(hic, ICM_GETDEFAULTKEYFRAMERATE, DWORD(@Result), sizeof(Result));
end;

{-- Draw window macro --------------------------------------------------------}

function ICDrawWindow(hic: HIC; prc: PRECT): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_WINDOW, DWORD(prc), sizeof(prc^));
end;

{-- ICCompressBegin() - start compression from a source fmt to a dest fmt ----}

function ICCompressBegin(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_COMPRESS_BEGIN, DWORD(lpbiInput), DWORD(lpbiOutput));
end;

{-- ICCompressQuery() - determines if compression from src to dst is supp ----}

function ICCompressQuery(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_COMPRESS_QUERY, DWORD(lpbiInput), DWORD(lpbiOutput));
end;

{-- ICCompressGetFormat() - get the output format (fmt of compressed) --------}

// if lpbiOutput is nil return the size in bytes needed for format.

function ICCompressGetFormat(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_COMPRESS_GET_FORMAT, DWORD(lpbiInput), DWORD(lpbiOutput));
end;

function ICCompressGetFormatSize(hic: HIC; lpbi: PBITMAPINFOHEADER): DWORD;
begin
Result := ICCompressGetFormat(hic, lpbi, nil);
end;

{-- ICCompressSize() - return the maximal size of a compressed frame ---------}

function ICCompressGetSize(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_COMPRESS_GET_SIZE, DWORD(lpbiInput), DWORD(lpbiOutput));
end;

function ICCompressEnd(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_COMPRESS_END, 0, 0);
end;

{-- ICDecompressBegin() - start compression from src fmt to a dest fmt -------}

function ICDecompressBegin(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_DECOMPRESS_BEGIN, DWORD(lpbiInput), DWORD(lpbiOutput));
end;

{-- ICDecompressQuery() - determines if compression is supported -------------}

function ICDecompressQuery(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_DECOMPRESS_QUERY, DWORD(lpbiInput), DWORD(lpbiOutput));
end;

{-- ICDecompressGetFormat - get the output fmt (fmt of uncompressed data) ----}

// if lpbiOutput is NULL return the size in bytes needed for format.

function ICDecompressGetFormat(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_DECOMPRESS_GET_FORMAT, DWORD(lpbiInput), DWORD(lpbiOutput));
end;

function ICDecompressGetFormatSize(hic: HIC; lpbi: PBITMAPINFOHEADER): DWORD;
begin
Result := ICDecompressGetFormat(hic, lpbi, nil);
end;

{-- ICDecompressGetPalette() - get the output palette ------------------------}

function ICDecompressGetPalette(hic: HIC; lpbiInput, lpbiOutput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_DECOMPRESS_GET_PALETTE, DWORD(lpbiInput), DWORD(lpbiOutput));
end;

function ICDecompressSetPalette(hic: HIC; lpbiPalette: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_DECOMPRESS_SET_PALETTE, DWORD(lpbiPalette), 0);
end;

function ICDecompressEnd(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_DECOMPRESS_END, 0, 0);
end;

{-- ICDecompressEx() - decompress a single frame -----------------------------}

function ICDecompressEx(
hic : HIC;
dwFlags : DWORD;
lpbiSrc : PBITMAPINFOHEADER;
lpSrc : PVOID;
xSrc : int;
ySrc : int;
dxSrc : int;
dySrc : int;
lpbiDst : PBITMAPINFOHEADER;
lpDst : PVOID;
xDst : int;
yDst : int;
dxDst : int;
dyDst : int
): DWORD; stdcall;
var
ic : TICDECOMPRESSEX;
begin
ic.dwFlags := dwFlags;
ic.lpbiSrc := lpbiSrc;
ic.lpSrc := lpSrc;
ic.xSrc := xSrc;
ic.ySrc := ySrc;
ic.dxSrc := dxSrc;
ic.dySrc := dySrc;
ic.lpbiDst := lpbiDst;
ic.lpDst := lpDst;
ic.xDst := xDst;
ic.yDst := yDst;
ic.dxDst := dxDst;
ic.dyDst := dyDst;

// note that ICM swaps round the length and pointer
// length in lparam2, pointer in lparam1
Result := ICSendMessage(hic, ICM_DECOMPRESSEX, DWORD(@ic), sizeof(ic));
end;

{-- ICDecompressExBegin() - start compression from a src fmt to a dest fmt ---}

function ICDecompressExBegin(
hic : HIC;
dwFlags : DWORD;
lpbiSrc : PBITMAPINFOHEADER;
lpSrc : PVOID;
xSrc : int;
ySrc : int;
dxSrc : int;
dySrc : int;
lpbiDst : PBITMAPINFOHEADER;
lpDst : PVOID;
xDst : int;
yDst : int;
dxDst : int;
dyDst : int
): DWORD; stdcall;
var
ic : TICDECOMPRESSEX ;
begin
ic.dwFlags := dwFlags;
ic.lpbiSrc := lpbiSrc;
ic.lpSrc := lpSrc;
ic.xSrc := xSrc;
ic.ySrc := ySrc;
ic.dxSrc := dxSrc;
ic.dySrc := dySrc;
ic.lpbiDst := lpbiDst;
ic.lpDst := lpDst;
ic.xDst := xDst;
ic.yDst := yDst;
ic.dxDst := dxDst;
ic.dyDst := dyDst;

// note that ICM swaps round the length and pointer
// length in lparam2, pointer in lparam1
Result := ICSendMessage(hic, ICM_DECOMPRESSEX_BEGIN, DWORD(@ic), sizeof(ic));
end;

{-- ICDecompressExQuery() ----------------------------------------------------}

function ICDecompressExQuery(
hic : HIC;
dwFlags : DWORD;
lpbiSrc : PBITMAPINFOHEADER;
lpSrc : PVOID;
xSrc : int;
ySrc : int;
dxSrc : int;
dySrc : int;
lpbiDst : PBITMAPINFOHEADER;
lpDst : PVOID;
xDst : int;
yDst : int;
dxDst : int;
dyDst : int
): DWORD; stdcall;
var
ic : TICDECOMPRESSEX;
begin
ic.dwFlags := dwFlags;
ic.lpbiSrc := lpbiSrc;
ic.lpSrc := lpSrc;
ic.xSrc := xSrc;
ic.ySrc := ySrc;
ic.dxSrc := dxSrc;
ic.dySrc := dySrc;
ic.lpbiDst := lpbiDst;
ic.lpDst := lpDst;
ic.xDst := xDst;
ic.yDst := yDst;
ic.dxDst := dxDst;
ic.dyDst := dyDst;

// note that ICM swaps round the length and pointer
// length in lparam2, pointer in lparam1
Result := ICSendMessage(hic, ICM_DECOMPRESSEX_QUERY, DWORD(@ic), sizeof(ic));
end;

function ICDecompressExEnd(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_DECOMPRESSEX_END, 0, 0)
end;

function ICDrawSuggestFormat(
hic : HIC;
lpbiIn : PBITMAPINFOHEADER;
lpbiOut : PBITMAPINFOHEADER;
dxSrc : int;
dySrc : int;
dxDst : int;
dyDst : int;
hicDecomp : HIC
): DWORD; stdcall;
var
ic : TICDRAWSUGGEST;
begin
ic.lpbiIn := lpbiIn;
ic.lpbiSuggest := lpbiOut;
ic.dxSrc := dxSrc;
ic.dySrc := dySrc;
ic.dxDst := dxDst;
ic.dyDst := dyDst;
ic.hicDecompressor := hicDecomp;

// note that ICM swaps round the length and pointer
// length in lparam2, pointer in lparam1
Result := ICSendMessage(hic, ICM_DRAW_SUGGESTFORMAT, DWORD(@ic), sizeof(ic));
end;

{-- ICDrawQuery() - determines if the compressor is willing to render fmt ----}

function ICDrawQuery(hic: HIC; lpbiInput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_QUERY, DWORD(lpbiInput), 0);
end;

function ICDrawChangePalette(hic: HIC; lpbiInput: PBITMAPINFOHEADER): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_CHANGEPALETTE, DWORD(lpbiInput), 0);
end;

function ICGetBuffersWanted(hic: HIC; lpdwBuffers: PDWORD): DWORD;
begin
Result := ICSendMessage(hic, ICM_GETBUFFERSWANTED, DWORD(lpdwBuffers), 0);
end;

function ICDrawEnd(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_END, 0, 0);
end;

function ICDrawStart(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_START, 0, 0);
end;

function ICDrawStartPlay(hic: HIC; lFrom, lTo: DWORD): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_START_PLAY, lFrom, lTo);
end;

function ICDrawStop(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_STOP, 0, 0);
end;

function ICDrawStopPlay(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_STOP_PLAY, 0, 0);
end;

function ICDrawGetTime(hic: HIC; lplTime: PDWORD): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_GETTIME, DWORD(lplTime), 0);
end;

function ICDrawSetTime(hic: HIC; lTime: DWORD): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_SETTIME, lTime, 0);
end;

function ICDrawRealize(hic: HIC; hdc: HDC; fBackground: BOOL): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_REALIZE, DWORD(hdc), DWORD(fBackground));
end;

function ICDrawFlush(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_FLUSH, 0, 0);
end;

function ICDrawRenderBuffer(hic: HIC): DWORD;
begin
Result := ICSendMessage(hic, ICM_DRAW_RENDERBUFFER, 0, 0);
end;

{-- ICSetStatusProc() - Set the status callback function ---------------------}

// ICMessage is not supported on NT

function ICSetStatusProc(
hic : HIC;
dwFlags : DWORD;
lParam : DWORD;
fpfnStatus : TICStatusProc
): DWORD; stdcall;
var
ic : TICSETSTATUSPROC;
begin
ic.dwFlags := dwFlags;
ic.lParam := lParam;
ic.Status := fpfnStatus;

// note that ICM swaps round the length and pointer
// length in lparam2, pointer in lparam1
Result := ICSendMessage(hic, ICM_SET_STATUS_PROC, DWORD(@ic), sizeof(ic));
end;

{== Helper routines for DrawDib and MCIAVI... ================================}

function ICDecompressOpen(fccType, fccHandler: DWORD; lpbiIn, lpbiOut: PBITMAPINFOHEADER): HIC;
begin
Result := ICLocate(fccType, fccHandler, lpbiIn, lpbiOut, ICMODE_DECOMPRESS);
end;

function ICDrawOpen(fccType, fccHandler: DWORD; lpbiIn: PBITMAPINFOHEADER): HIC;
begin
Result := ICLocate(fccType, fccHandler, lpbiIn, nil, ICMODE_DRAW);
end;

{-- DrawDibUpdate() - redraw last image (may only be valid with DDF_BUFFER) --}

function DrawDibUpdate(hdd: HDRAWDIB; hdc: HDC; x, y: int): BOOL;
begin
Result := DrawDibDraw(hdd, hdc, x, y, 0, 0, nil, nil, 0, 0, 0, 0, DDF_UPDATE);
end;

{== Useful macros ============================================================}

{-- Macro to get stream number out of a FOURCC ckid --------------------------}

function FromHex(n: BYTE): BYTE;
begin
if n >= Ord('A') then
Result := Ord + 10 - Ord('A')
else
Result := Ord - Ord('0');
end;

function StreamFromFOURCC(fcc: DWORD): BYTE;
begin
Result := (FromHex(Lo(LoWord(fcc))) shl 4) + FromHex(Hi(LoWord(fcc)));
end;

{-- Macro to get TWOCC chunk type out of a FOURCC ckid -----------------------}

function TWOCCFromFOURCC(fcc: DWORD): WORD;
begin
Result := HiWord(fcc);
end;

{-- Macro to make a ckid for a chunk out of a TWOCC and a stream num (0-255) -}

function ToHex(n: BYTE): BYTE;
begin
if n > 9 then
Result := n - 10 + Ord('A')
else
Result := n + Ord('0');
end;

function MAKEAVICKID(tcc: WORD; stream: BYTE): DWORD;
begin
Result := MakeLONG((ToHex(stream and $0F) shl 8) or ToHex((stream and $F0) shr 4),tcc);
end;

{-- Helper macros ------------------------------------------------------------}

function AVIStreamSampleToSample(pavi1, pavi2: PAVISTREAM; l: DWORD): DWORD;
begin
Result := AVIStreamTimeToSample(pavi1,AVIStreamSampleToTime(pavi2, l));
end;

function AVIStreamNextSample(pavi: PAVISTREAM; l: DWORD): DWORD;
begin
Result := AVIStreamFindSample(pavi,l+1,FIND_NEXT or FIND_ANY);
end;

function AVIStreamPrevSample(pavi: PAVISTREAM; l: DWORD): DWORD;
begin
Result := AVIStreamFindSample(pavi,l-1,FIND_PREV or FIND_ANY);
end;

function AVIStreamNearestSample(pavi: PAVISTREAM; l: DWORD): DWORD;
begin
Result := AVIStreamFindSample(pavi,l,FIND_PREV or FIND_ANY);
end;

function AVIStreamNextKeyFrame(pavi: PAVISTREAM; l: DWORD): DWORD;
begin
Result := AVIStreamFindSample(pavi,l+1,FIND_NEXT or FIND_KEY);
end;

function AVIStreamPrevKeyFrame(pavi: PAVISTREAM; l: DWORD): DWORD;
begin
Result := AVIStreamFindSample(pavi,l-1,FIND_PREV or FIND_KEY);
end;

function AVIStreamNearestKeyFrame(pavi: PAVISTREAM; l: DWORD): DWORD;
begin
Result := AVIStreamFindSample(pavi,l,FIND_PREV or FIND_KEY)
end;

function AVIStreamIsKeyFrame(pavi: PAVISTREAM; l: DWORD): BOOL;
begin
Result := AVIStreamNearestKeyFrame(pavi,l) = l;
end;

function AVIStreamPrevSampleTime(pavi: PAVISTREAM; t: DWORD): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamPrevSample(pavi,AVIStreamTimeToSample(pavi,t)));
end;

function AVIStreamNextSampleTime(pavi: PAVISTREAM; t: DWORD): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamNextSample(pavi,AVIStreamTimeToSample(pavi,t)));
end;

function AVIStreamNearestSampleTime(pavi: PAVISTREAM; t: DWORD): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamNearestSample(pavi,AVIStreamTimeToSample(pavi,t)));
end;

function AVIStreamNextKeyFrameTime(pavi: PAVISTREAM; t: DWORD): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamNextKeyFrame(pavi,AVIStreamTimeToSample(pavi, t)));
end;

function AVIStreamPrevKeyFrameTime(pavi: PAVISTREAM; t: DWORD): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamPrevKeyFrame(pavi,AVIStreamTimeToSample(pavi, t)));
end;

function AVIStreamNearestKeyFrameTime(pavi: PAVISTREAM; t: DWORD): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamNearestKeyFrame(pavi,AVIStreamTimeToSample(pavi, t)));
end;

function AVIStreamStartTime(pavi: PAVISTREAM): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamStart(pavi));
end;

function AVIStreamLengthTime(pavi: PAVISTREAM): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamLength(pavi));
end;

function AVIStreamEnd(pavi: PAVISTREAM): DWORD;
begin
Result := AVIStreamStart(pavi) + AVIStreamLength(pavi);
end;

function AVIStreamEndTime(pavi: PAVISTREAM): DWORD;
begin
Result := AVIStreamSampleToTime(pavi, AVIStreamEnd(pavi));
end;

function AVIStreamSampleSize(pavi: PAVISTREAM; lPos: DWORD; plSize: PDWORD): DWORD;
begin
Result := AVIStreamRead(pavi,lPos,1,nil,0,plSize,nil);
end;

function AVIStreamFormatSize(pavi: PAVISTREAM; lPos: DWORD; plSize: PDWORD): HResult;
begin
Result := AVIStreamReadFormat(pavi,lPos,nil,plSize);
end;

function AVIStreamDataSize(pavi: PAVISTREAM; fcc: DWORD; plSize: PDWORD): HResult;
begin
Result := AVIStreamReadData(pavi,fcc,nil,plSize)
end;

{== MCIWnd ===================================================================}

function MCIWndSM(hWnd: HWND; Msg: UINT; wParam: WPARAM; lParam: LPARAM): DWORD;
begin
Result := SendMessage(hWnd, Msg, wParam, lParam);
end;

{-- Can macros ---------------------------------------------------------------}

function MCIWndCanPlay(hwnd: HWND): BOOL;
begin
Result := MCIWndSM(hwnd,MCIWNDM_CAN_PLAY,0,0) <> 0;
end;

function MCIWndCanRecord(hwnd: HWND): BOOL;
begin
Result := MCIWndSM(hwnd,MCIWNDM_CAN_RECORD,0,0) <> 0;
end;

function MCIWndCanSave(hwnd: HWND): BOOL;
begin
Result := MCIWndSM(hwnd,MCIWNDM_CAN_SAVE,0,0) <> 0;
end;

function MCIWndCanWindow(hwnd: HWND): BOOL;
begin
Result := MCIWndSM(hwnd,MCIWNDM_CAN_WINDOW,0,0) <> 0;
end;

function MCIWndCanEject(hwnd: HWND): BOOL;
begin
Result := MCIWndSM(hwnd,MCIWNDM_CAN_EJECT,0,0) <> 0;
end;

function MCIWndCanConfig(hwnd: HWND): BOOL;
begin
Result := MCIWndSM(hwnd,MCIWNDM_CAN_CONFIG,0,0) <> 0;
end;

function MCIWndPaletteKick(hwnd: HWND): BOOL;
begin
Result := MCIWndSM(hwnd,MCIWNDM_PALETTEKICK,0,0) <> 0;
end;

function MCIWndSave(hwnd: HWND; szFile: LPCSTR): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_SAVE, 0, LPARAM(szFile));
end;

function MCIWndSaveDialog(hwnd: HWND): DWORD;
begin
Result := MCIWndSave(hwnd, LPCSTR(-1));
end;

// If you dont give a device it will use the current device....

function MCIWndNew(hwnd: HWND; lp: PVOID): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_NEW, 0, LPARAM(lp));
end;

function MCIWndRecord(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_RECORD, 0, 0);
end;

function MCIWndOpen(hwnd: HWND; sz: LPCSTR; f: BOOL): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_OPEN, WPARAM(f), LPARAM(sz));
end;

function MCIWndOpenDialog(hwnd: HWND): DWORD;
begin
Result := MCIWndOpen(hwnd, LPCSTR(-1), False);
end;

function MCIWndClose(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_CLOSE, 0, 0);
end;

function MCIWndPlay(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_PLAY, 0, 0);
end;

function MCIWndStop(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_STOP, 0, 0);
end;

function MCIWndPause(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_PAUSE, 0, 0);
end;

function MCIWndResume(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_RESUME, 0, 0);
end;

function MCIWndSeek(hwnd: HWND; lPos: DWORD): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_SEEK, 0, lPos);
end;

function MCIWndEject(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_EJECT, 0, 0);
end;

function MCIWndHome(hwnd: HWND): DWORD;
begin
Result := MCIWndSeek(hwnd, Uint(MCIWND_START));
end;

function MCIWndEnd(hwnd: HWND): DWORD;
begin
Result := MCIWndSeek(hwnd, Uint(MCIWND_END));
end;

function MCIWndGetSource(hwnd: HWND; prc: PRECT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GET_SOURCE, 0, LPARAM(prc));
end;

function MCIWndPutSource(hwnd: HWND; prc: PRECT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_PUT_SOURCE, 0, LPARAM(prc));
end;

function MCIWndGetDest(hwnd: HWND; prc: PRECT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GET_DEST, 0, LPARAM(prc));
end;

function MCIWndPutDest(hwnd: HWND; prc: PRECT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_PUT_DEST, 0, LPARAM(prc));
end;

function MCIWndPlayReverse(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_PLAYREVERSE, 0, 0);
end;

function MCIWndPlayFrom(hwnd: HWND; lPos: DWORD): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_PLAYFROM, 0, lPos);
end;

function MCIWndPlayTo(hwnd: HWND; lPos: DWORD): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_PLAYTO, 0, lPos);
end;

function MCIWndPlayFromTo(hwnd: HWND; lStart, lEnd: DWORD): DWORD;
begin
MCIWndSeek(hwnd, lStart);
Result := MCIWndPlayTo(hwnd, lEnd);
end;

function MCIWndGetDeviceID(hwnd: HWND): UINT;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETDEVICEID, 0, 0);
end;

function MCIWndGetAlias(hwnd: HWND): UINT;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETALIAS, 0, 0);
end;

function MCIWndGetMode(hwnd: HWND; lp: LPCSTR; len: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETMODE, len, LPARAM(lp));
end;

function MCIWndGetPosition(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETPOSITION, 0, 0);
end;

function MCIWndGetPositionString(hwnd: HWND; lp: LPCSTR; len: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETPOSITION, len, LPARAM(lp));
end;

function MCIWndGetStart(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETSTART, 0, 0);
end;

function MCIWndGetLength(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETLENGTH, 0, 0);
end;

function MCIWndGetEnd(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETEND, 0, 0);
end;

function MCIWndStep(hwnd: HWND; n: DWORD): DWORD;
begin
Result := MCIWndSM(hwnd, MCI_STEP, 0, n);
end;

procedure MCIWndDestroy(hwnd: HWND);
begin
MCIWndSM(hwnd, WM_CLOSE, 0, 0);
end;

procedure MCIWndSetZoom(hwnd: HWND; iZoom: UINT);
begin
MCIWndSM(hwnd, MCIWNDM_SETZOOM, 0, iZoom);
end;

function MCIWndGetZoom(hwnd: HWND): UINT;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETZOOM, 0, 0);
end;

function MCIWndSetVolume(hwnd: HWND; iVol: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_SETVOLUME, 0, iVol);
end;

function MCIWndGetVolume(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETVOLUME, 0, 0);
end;

function MCIWndSetSpeed(hwnd: HWND; iSpeed: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_SETSPEED, 0, iSpeed);
end;

function MCIWndGetSpeed(hwnd: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETSPEED, 0, 0);
end;

function MCIWndSetTimeFormat(hwnd: HWND; lp: LPCSTR): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_SETTIMEFORMAT, 0, LPARAM(lp));
end;

function MCIWndGetTimeFormat(hwnd: HWND; lp: LPCSTR; len: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETTIMEFORMAT, len, LPARAM(lp));
end;

procedure MCIWndValidateMedia(hwnd: HWND);
begin
MCIWndSM(hwnd, MCIWNDM_VALIDATEMEDIA, 0, 0);
end;

procedure MCIWndSetRepeat(hwnd: HWND; f: BOOL);
begin
MCIWndSM(hwnd, MCIWNDM_SETREPEAT, 0, LPARAM(f));
end;

function MCIWndGetRepeat(hwnd: HWND): BOOL;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETREPEAT, 0, 0) <> 0;
end;

function MCIWndUseFrames(hwnd: HWND): DWORD;
begin
Result := MCIWndSetTimeFormat(hwnd, 'frames');
end;

function MCIWndUseTime(hwnd: HWND): DWORD;
begin
Result := MCIWndSetTimeFormat(hwnd, 'ms');
end;

procedure MCIWndSetActiveTimer(hwnd: HWND; active: UINT);
begin
MCIWndSM(hwnd, MCIWNDM_SETACTIVETIMER, active, 0);
end;

procedure MCIWndSetInactiveTimer(hwnd: HWND; inactive: UINT);
begin
MCIWndSM(hwnd, MCIWNDM_SETINACTIVETIMER, inactive, 0);
end;

procedure MCIWndSetTimers(hwnd: HWND; active, inactive: UINT);
begin
MCIWndSM(hwnd, MCIWNDM_SETTIMERS, active, inactive);
end;

function MCIWndGetActiveTimer(hwnd: HWND): UINT;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETACTIVETIMER, 0, 0);
end;

function MCIWndGetInactiveTimer(hwnd: HWND): UINT;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETINACTIVETIMER, 0, 0);
end;

function MCIWndRealize(hwnd: HWND; fBkgnd: BOOL): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_REALIZE, WPARAM(fBkgnd), 0);
end;

function MCIWndSendString(hwnd: HWND; sz: LPCSTR): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_SENDSTRING, 0, LPARAM(sz));
end;

function MCIWndReturnString(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_RETURNSTRING, len, LPARAM(lp));
end;

function MCIWndGetError(hwnd: HWND; lp: LPSTR; len: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETERROR, len, LPARAM(lp));
end;

function MCIWndGetPalette(hwnd: HWND): HPALETTE;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETPALETTE, 0, 0);
end;

function MCIWndSetPalette(hwnd: HWND; hpal: HPALETTE): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_SETPALETTE, hpal, 0);
end;

function MCIWndGetFileName(hwnd: HWND; lp: LPCSTR; len: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETFILENAME, len, LPARAM(lp));
end;

function MCIWndGetDevice(hwnd: HWND; lp: LPCSTR; len: UINT): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETDEVICE, len, LPARAM(lp));
end;

function MCIWndGetStyles(hwnd: HWND): UINT;
begin
Result := MCIWndSM(hwnd, MCIWNDM_GETSTYLES, 0, 0);
end;

function MCIWndChangeStyles(hwnd: HWND; mask: UINT; value: DWORD): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_CHANGESTYLES, mask, value);
end;

function MCIWndOpenInterface(hwnd: HWND; pUnk: PUNKNOWN): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_OPENINTERFACE, 0, LPARAM(pUnk));
end;

function MCIWndSetOwner(hwnd: HWND; hwndP: HWND): DWORD;
begin
Result := MCIWndSM(hwnd, MCIWNDM_SETOWNER, hwndP, 0);
end;

{== AVICAP - Window class for AVI capture ====================================}

function AVICapSM(hwnd: HWND; m: UINT; w: WPARAM; l: LPARAM): DWORD;
begin
if IsWindow(hwnd) then
Result := SendMessage(hwnd,m,w,l)
else
Result := 0;
end;

{-- Message crackers for above -----------------------------------------------}

function capSetCallbackOnError(hwnd: HWND; fpProc: TCAPERRORCALLBACK): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_CALLBACK_ERROR, 0, LPARAM(@fpProc)) <> 0;
end;

function capSetCallbackOnStatus(hwnd: HWND; fpProc: TCAPSTATUSCALLBACK): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_CALLBACK_STATUS, 0, LPARAM(@fpProc)) <> 0;
end;

function capSetCallbackOnYield(hwnd: HWND; fpProc: TCAPYIELDCALLBACK): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_CALLBACK_YIELD, 0, LPARAM(@fpProc)) <> 0;
end;

function capSetCallbackOnFrame(hwnd: HWND; fpProc: TCAPVIDEOCALLBACK): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_CALLBACK_FRAME, 0, LPARAM(@fpProc)) <> 0;
end;

function capSetCallbackOnVideoStream(hwnd: HWND; fpProc: TCAPVIDEOCALLBACK): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, LPARAM(@fpProc)) <> 0;
end;

function capSetCallbackOnWaveStream(hwnd: HWND; fpProc: TCAPWAVECALLBACK): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_CALLBACK_WAVESTREAM, 0, LPARAM(@fpProc)) <> 0;
end;

function capSetCallbackOnCapControl(hwnd: HWND; fpProc: TCAPCONTROLCALLBACK): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_CALLBACK_CAPCONTROL, 0, LPARAM(@fpProc)) <> 0;
end;

function capSetUserData(hwnd: HWND; lUser: DWORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_USER_DATA, 0, lUser) <> 0;
end;

function capGetUserData(hwnd: HWND): DWORD;
begin
Result := AVICapSM(hwnd, WM_CAP_GET_USER_DATA, 0, 0);
end;

function capDriverConnect(hwnd: HWND; i: INT): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DRIVER_CONNECT, i, 0) <> 0;
end;

function capDriverDisconnect(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DRIVER_DISCONNECT, 0, 0) <> 0;
end;

function capDriverGetName(hwnd: HWND; szName: LPSTR; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DRIVER_GET_NAME, wSize, LPARAM(szName)) <> 0;
end;

function capDriverGetVersion(hwnd: HWND; szVer: LPSTR; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DRIVER_GET_VERSION, wSize, LPARAM(szVer)) <> 0;
end;

function capDriverGetCaps(hwnd: HWND; s: PCAPDRIVERCAPS; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DRIVER_GET_CAPS, wSize, LPARAM(s)) <> 0;
end;

function capFileSetCaptureFile(hwnd: HWND; szName: LPCSTR): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_FILE_SET_CAPTURE_FILE, 0, LPARAM(szName)) <> 0;
end;

function capFileGetCaptureFile(hwnd: HWND; szName: LPSTR; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_FILE_GET_CAPTURE_FILE, wSize, LPARAM(szName)) <> 0;
end;

function capFileAlloc(hwnd: HWND; dwSize: DWORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_FILE_ALLOCATE, 0, dwSize) <> 0;
end;

function capFileSaveAs(hwnd: HWND; szName: LPCSTR): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_FILE_SAVEAS, 0, LPARAM(szName)) <> 0;
end;

function capFileSetInfoChunk(hwnd: HWND; lpInfoChunk: PCAPINFOCHUNK): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_FILE_SET_INFOCHUNK, 0, LPARAM(lpInfoChunk)) <> 0;
end;

function capFileSaveDIB(hwnd: HWND; szName: LPCSTR): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_FILE_SAVEDIB, 0, LPARAM(szName)) <> 0;
end;

function capEditCopy(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_EDIT_COPY, 0, 0) <> 0;
end;

function capSetAudioFormat(hwnd: HWND; s: PWAVEFORMATEX; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_AUDIOFORMAT, wSize, LPARAM(s)) <> 0;
end;

function capGetAudioFormat(hwnd: HWND; s: PWAVEFORMATEX; wSize: WORD): DWORD;
begin
Result := AVICapSM(hwnd, WM_CAP_GET_AUDIOFORMAT, wSize, LPARAM(s));
end;

function capGetAudioFormatSize(hwnd: HWND): DWORD;
begin
Result := AVICapSM(hwnd, WM_CAP_GET_AUDIOFORMAT, 0, 0);
end;

function capDlgVideoFormat(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DLG_VIDEOFORMAT, 0, 0) <> 0;
end;

function capDlgVideoSource(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DLG_VIDEOSOURCE, 0, 0) <> 0;
end;

function capDlgVideoDisplay(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DLG_VIDEODISPLAY, 0, 0) <> 0;
end;

function capDlgVideoCompression(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_DLG_VIDEOCOMPRESSION, 0, 0) <> 0;
end;

function capGetVideoFormat(hwnd: HWND; s: PVOID; wSize: WORD): DWORD;
begin
Result := AVICapSM(hwnd, WM_CAP_GET_VIDEOFORMAT, wSize, LPARAM(s));
end;

function capGetVideoFormatSize(hwnd: HWND): DWORD;
begin
Result := AVICapSM(hwnd, WM_CAP_GET_VIDEOFORMAT, 0, 0);
end;

function capSetVideoFormat(hwnd: HWND; s: PVOID; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_VIDEOFORMAT, wSize, LPARAM(s)) <> 0;
end;

function capPreview(hwnd: HWND; f: BOOL): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_PREVIEW, WPARAM(f), 0) <> 0;
end;

function capPreviewRate(hwnd: HWND; wMS: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_PREVIEWRATE, wMS, 0) <> 0;
end;

function capOverlay(hwnd: HWND; f: BOOL): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_OVERLAY, WPARAM(f), 0) <> 0;
end;

function capPreviewScale(hwnd: HWND; f: BOOL): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_SCALE, WPARAM(f), 0) <> 0;
end;

function capGetStatus(hwnd: HWND; s: PCAPSTATUS; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_GET_STATUS, wSize, LPARAM(s)) <> 0;
end;

function capSetScrollPos(hwnd: HWND; lpP: PPOINT): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_SCROLL, 0, LPARAM(lpP)) <> 0;
end;

function capGrabFrame(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_GRAB_FRAME, 0, 0) <> 0;
end;

function capGrabFrameNoStop(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_GRAB_FRAME_NOSTOP, 0, 0) <> 0;
end;

function capCaptureSequence(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SEQUENCE, 0, 0) <> 0;
end;

function capCaptureSequenceNoFile(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SEQUENCE_NOFILE, 0, 0) <> 0;
end;

function capCaptureStop(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_STOP, 0, 0) <> 0;
end;

function capCaptureAbort(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_ABORT, 0, 0) <> 0;
end;

function capCaptureSingleFrameOpen(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SINGLE_FRAME_OPEN, 0, 0) <> 0;
end;

function capCaptureSingleFrameClose(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SINGLE_FRAME_CLOSE, 0, 0) <> 0;
end;

function capCaptureSingleFrame(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SINGLE_FRAME, 0, 0) <> 0;
end;

function capCaptureGetSetup(hwnd: HWND; s: PCAPTUREPARMS; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_GET_SEQUENCE_SETUP, wSize, LPARAM(s)) <> 0;
end;

function capCaptureSetSetup(hwnd: HWND; s: PCAPTUREPARMS; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_SEQUENCE_SETUP, wSize, LPARAM(s)) <> 0;
end;

function capSetMCIDeviceName(hwnd: HWND; szName: LPCSTR): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_SET_MCI_DEVICE, 0, LPARAM(szName)) <> 0;
end;

function capGetMCIDeviceName(hwnd: HWND; szName: LPSTR; wSize: WORD): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_GET_MCI_DEVICE, wSize, LPARAM(szName)) <> 0;
end;

function capPaletteOpen(hwnd: HWND; szName: LPCSTR): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_PAL_OPEN, 0, LPARAM(szName)) <> 0;
end;

function capPaletteSave(hwnd: HWND; szName: LPCSTR): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_PAL_SAVE, 0, LPARAM(szName)) <> 0;
end;

function capPalettePaste(hwnd: HWND): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_PAL_PASTE, 0, 0) <> 0;
end;

function capPaletteAuto(hwnd: HWND; iFrames, iColors: INT): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_PAL_AUTOCREATE, iFrames, iColors) <> 0;
end;

function capPaletteManual(hwnd: HWND; fGrab: BOOL; iColors: INT): BOOL;
begin
Result := AVICapSM(hwnd, WM_CAP_PAL_MANUALCREATE, WPARAM(fGrab), iColors) <> 0;
end;

{== Externals ================================================================}

const
VFWDLL = 'MSVFW32.DLL';
AVIFILDLL = 'AVIFIL32.DLL';
AVICAPDLL = 'AVICAP32.DLL';

{-- Returns version of VFW ---------------------------------------------------}

function VideoForWindowsVersion: DWord; pascal; external VFWDLL;

{-- Call these to start stop using VfW from your app -------------------------}

{ TODO: Where are these functions? }

// function InitVFW: DWORD; stdcall;
// function TermVFW: DWORD; stdcall;

{-- ICM function declarations ------------------------------------------------}

function ICInfo(fccType, fccHandler: DWORD; lpicinfo: PICINFO) : BOOL ; stdcall ; external VFWDLL;
function ICInstall(fccType, fccHandler: DWORD; lParam: LPARAM; szDesc: LPSTR; wFlags: UINT) : BOOL ; stdcall ; external VFWDLL;
function ICRemove(fccType, fccHandler: DWORD; wFlags: UINT) : BOOL ; stdcall ; external VFWDLL;
function ICGetInfo(hic: HIC; picinfo: PICINFO; cb: DWORD) : DWORD ; stdcall ; external VFWDLL;

function ICOpen(fccType, fccHandler: DWORD; wMode: UINT) : HIC ; stdcall ; external VFWDLL;
function ICOpenFunction(fccType, fccHandler: DWORD; wMode: UINT; lpfnHandler: TFarProc) : HIC ; stdcall ; external VFWDLL;
function ICClose(hic: HIC) : DWORD ; stdcall ; external VFWDLL;

function ICSendMessage(hic: HIC; msg: UINT; dw1, dw2: DWORD) : DWORD ; stdcall ; external VFWDLL;

{== Compression functions ====================================================}

{-- ICCompress() - compress a single frame -----------------------------------}

function ICCompress(
hic : HIC;
dwFlags : DWORD; // flags
lpbiOutput : PBITMAPINFOHEADER; // output format
lpData : PVOID; // output data
lpbiInput : PBITMAPINFOHEADER; // format of frame to compress
lpBits : PVOID; // frame data to compress
lpckid : PDWORD; // ckid for data in AVI file
lpdwFlags : PDWORD; // flags in the AVI index.
lFrameNum : DWORD; // frame number of seq.
dwFrameSize : DWORD; // reqested size in bytes. (if non zero)
dwQuality : DWORD; // quality within one frame
lpbiPrev : PBITMAPINFOHEADER; // format of previous frame
lpPrev : PVOID // previous frame
) : DWORD; cdecl; external VFWDLL;

{== Decompression functions ==================================================}

{-- ICDecompress() - decompress a single frame -------------------------------}

function ICDecompress(
hic : HIC;
dwFlags : DWORD; // flags (from AVI index...)
lpbiFormat : PBITMAPINFOHEADER; // BITMAPINFO of compressed data
// biSizeImage has the chunk size
lpData : PVOID; // data
lpbi : PBITMAPINFOHEADER; // DIB to decompress to
lpBits : PVOID
): DWORD; cdecl; external VFWDLL;

{== Drawing functions ========================================================}

{-- ICDrawBegin() - start decompressing data with fmt directly to screen -----}

// return zero if the decompressor supports drawing.

function ICDrawBegin(
hic : HIC;
dwFlags : DWORD; // flags
hpal : HPALETTE; // palette to draw with
hwnd : HWND; // window to draw to
hdc : HDC; // HDC to draw to
xDst : int; // destination rectangle
yDst : int;
dxDst : int;
dyDst : int;
lpbi : PBITMAPINFOHEADER; // format of frame to draw
xSrc : int; // source rectangle
ySrc : int;
dxSrc : int;
dySrc : int;
dwRate : DWORD; // frames/second = (dwRate/dwScale)
dwScale : DWORD
): DWORD; cdecl; external VFWDLL;

{-- ICDraw() - decompress data directly to the screen ------------------------}

function ICDraw(
hic : HIC;
dwFlags : DWORD; // flags
lpFormat : PVOID; // format of frame to decompress
lpData : PVOID; // frame data to decompress
cbData : DWORD; // size of data
lTime : DWORD // time to draw this frame
): DWORD; cdecl; external VFWDLL;

{== Helper routines for DrawDib and MCIAVI... ================================}

function ICLocate(fccType, fccHandler: DWORD; lpbiIn, lpbiOut: PBITMAPINFOHEADER; wFlags: WORD): HIC; stdcall; external VFWDLL;
function ICGetDisplayFormat(hic: HIC; lpbiIn, lpbiOut: PBITMAPINFOHEADER; BitDepth: int; dx, dy: int): HIC; stdcall; external VFWDLL;

{== Higher level functions ===================================================}

function ICImageCompress(
hic : HIC; // compressor to use
uiFlags : UINT; // flags (none yet)
lpbiIn : PBITMAPINFO; // format to compress from
lpBits : PVOID; // data to compress
lpbiOut : PBITMAPINFO; // compress to this (NULL ==> default)
lQuality : DWORD; // quality to use
plSize : PDWORD // compress to this size (0=whatever)
): THANDLE; stdcall; external VFWDLL;

function ICImageDecompress(
hic : HIC; // compressor to use
uiFlags : UINT; // flags (none yet)
lpbiIn : PBITMAPINFO; // format to decompress from
lpBits : PVOID; // data to decompress
lpbiOut : PBITMAPINFO // decompress to this (NULL ==> default)
): THANDLE; stdcall; external VFWDLL;

{-- ICCompressorChoose() - allows user to choose compressor, quality etc... --}

function ICCompressorChoose(
hwnd : HWND; // parent window for dialog
uiFlags : UINT; // flags
pvIn : PVOID; // input format (optional)
lpData : PVOID; // input data (optional)
pc : PCOMPVARS; // data about the compressor/dlg
lpszTitle : LPSTR // dialog title (optional)
): BOOL; stdcall; external VFWDLL;

function ICSeqCompressFrameStart(pc: PCOMPVARS; lpbiIn: PBITMAPINFO): BOOL; stdcall; external VFWDLL;
procedure ICSeqCompressFrameEnd(pc: PCOMPVARS); stdcall; external VFWDLL;

function ICSeqCompressFrame(
pc : PCOMPVARS; // set by ICCompressorChoose
uiFlags : UINT; // flags
lpBits : PVOID; // input DIB bits
pfKey : PBOOL; // did it end up being a key frame?
plSize : PDWORD // size to compress to/of returned image
): PVOID; stdcall; external VFWDLL;

procedure ICCompressorFree(pc: PCOMPVARS); stdcall; external VFWDLL;

{== DrawDib functions ========================================================}

{-- DrawDibOpen() ------------------------------------------------------------}

function DrawDibOpen: HDRAWDIB; stdcall; external VFWDLL;

{-- DrawDibClose() -----------------------------------------------------------}

function DrawDibClose(hdd: HDRAWDIB): BOOL; stdcall; external VFWDLL;

{-- DrawDibGetBuffer() -------------------------------------------------------}

function DrawDibGetBuffer(hdd: HDRAWDIB; lpbi: PBITMAPINFOHEADER; dwSize: DWORD; dwFlags: DWORD): PVOID; stdcall; external VFWDLL;

{-- DrawDibGetPalette() - get the palette used for drawing DIBs --------------}

function DrawDibGetPalette(hdd: HDRAWDIB): HPALETTE; stdcall; external VFWDLL;

{-- DrawDibSetPalette() - set the palette used for drawing DIBs --------------}

function DrawDibSetPalette(hdd: HDRAWDIB; hpal: HPALETTE): BOOL; stdcall; external VFWDLL;

{-- DrawDibChangePalette() ---------------------------------------------------}

function DrawDibChangePalette(hdd: HDRAWDIB; iStart, iLen: int; lppe: PPALETTEENTRY): BOOL; stdcall; external VFWDLL;

{-- DrawDibRealize() - realize the palette in a HDD --------------------------}

function DrawDibRealize(hdd: HDRAWDIB; hdc: HDC; fBackground: BOOL): UINT; stdcall; external VFWDLL;

{-- DrawDibStart() - start of streaming playback -----------------------------}

function DrawDibStart(hdd: HDRAWDIB; rate: DWORD): BOOL; stdcall; external VFWDLL;

{-- DrawDibStop() - start of streaming playback ------------------------------}

function DrawDibStop(hdd: HDRAWDIB): BOOL; stdcall; external VFWDLL;

{-- DrawDibBegin() - prepare to draw -----------------------------------------}

function DrawDibBegin(
hdd : HDRAWDIB;
hdc : HDC;
dxDst : int;
dyDst : int;
lpbi : PBITMAPINFOHEADER;
dxSrc : int;
dySrc : int;
wFlags : UINT
): BOOL; stdcall; external VFWDLL;

{-- DrawDibDraw() - actually draw a DIB to the screen ------------------------}

function DrawDibDraw(
hdd : HDRAWDIB;
hdc : HDC;
xDst : int;
yDst : int;
dxDst : int;
dyDst : int;
lpbi : PBITMAPINFOHEADER;
lpBits : PVOID;
xSrc : int;
ySrc : int;
dxSrc : int;
dySrc : int;
wFlags : UINT
): BOOL; stdcall; external VFWDLL;

{-- DrawDibEnd() -------------------------------------------------------------}

function DrawDibEnd(hdd: HDRAWDIB): BOOL; stdcall; external VFWDLL;

{-- DrawDibTime() - for debugging purposes only ------------------------------}

function DrawDibTime(hdd: HDRAWDIB; lpddtime: PDRAWDIBTIME): BOOL; stdcall; external VFWDLL;

{-- Display profiling --------------------------------------------------------}

function DrawDibProfileDisplay(lpbi: PBITMAPINFOHEADER): DWORD; stdcall; external VFWDLL;

{-- Functions ----------------------------------------------------------------}

procedure AVIFileInit; stdcall; external AVIFILDLL; // Call this first!
procedure AVIFileExit; stdcall; external AVIFILDLL;

function AVIFileAddRef(pfile: PAVIFILE): UDWORD; stdcall; external AVIFILDLL;
function AVIFileRelease(pfile: PAVIFILE): UDWORD; stdcall; external AVIFILDLL;

function AVIFileOpenA(var ppfile: PAVIFILE; szFile: LPCSTR; uMode: UINT; lpHandler: PCLSID): HResult; stdcall; external AVIFILDLL;
function AVIFileOpenW(var ppfile: PAVIFILE; szFile: LPCWSTR; uMode: UINT; lpHandler: PCLSID): HResult; stdcall; external AVIFILDLL;

function AVIFileOpen(var ppfile: PAVIFILE; szFile: LPCSTR; uMode: UINT; lpHandler: PCLSID): HResult; stdcall; external AVIFILDLL name 'AVIFileOpenA';

function AVIFileInfoW(pfile: PAVIFILE; pfi: PAVIFILEINFOW; lSize: DWORD): HResult; stdcall; external AVIFILDLL;
function AVIFileInfoA(pfile: PAVIFILE; pfi: PAVIFILEINFOA; lSize: DWORD): HResult; stdcall; external AVIFILDLL;

function AVIFileInfo(pfile: PAVIFILE; pfi: PAVIFILEINFOA; lSize: DWORD): HResult; stdcall; external AVIFILDLL name 'AVIFileInfoA';

function AVIFileGetStream(pfile: PAVIFILE; var ppavi: PAVISTREAM; fccType: DWORD; lParam: DWORD): HResult; stdcall; external AVIFILDLL;

function AVIFileCreateStreamW(pfile: PAVIFILE; var ppavi: PAVISTREAM; psi: PAVISTREAMINFOW): HResult; stdcall; external AVIFILDLL;
function AVIFileCreateStreamA(pfile: PAVIFILE; var ppavi: PAVISTREAM; psi: PAVISTREAMINFOA): HResult; stdcall; external AVIFILDLL;

function AVIFileCreateStream(pfile: PAVIFILE; var ppavi: PAVISTREAM; psi: PAVISTREAMINFOA): HResult; stdcall; external AVIFILDLL name 'AVIFileCreateStreamA';

function AVIFileWriteData(pfile: PAVIFILE; ckid: DWORD; lpData: PVOID; cbData: DWORD): HResult; stdcall; external AVIFILDLL;
function AVIFileReadData(pfile: PAVIFILE; ckid: DWORD; lpData: PVOID; lpcbData: PDWORD): HResult; stdcall; external AVIFILDLL;
function AVIFileEndRecord(pfile: PAVIFILE): HResult; stdcall; external AVIFILDLL;

function AVIStreamAddRef(pavi: PAVISTREAM): UDWORD; stdcall; external AVIFILDLL;
function AVIStreamRelease(pavi: PAVISTREAM): UDWORD; stdcall; external AVIFILDLL;

function AVIStreamInfoW (pavi: PAVISTREAM; psi: PAVISTREAMINFOW; lSize: DWORD): HResult; stdcall; external AVIFILDLL;
function AVIStreamInfoA (pavi: PAVISTREAM; psi: PAVISTREAMINFOA; lSize: DWORD): HResult; stdcall; external AVIFILDLL;

function AVIStreamInfo(pavi: PAVISTREAM; psi: PAVISTREAMINFOA; lSize: DWORD): HResult; stdcall; external AVIFILDLL name 'AVIStreamInfoA';

function AVIStreamFindSample(pavi: PAVISTREAM; lPos: DWORD; lFlags: DWORD): DWORD; stdcall; external AVIFILDLL;
function AVIStreamReadFormat(pavi: PAVISTREAM; lPos: DWORD; lpFormat: PVOID; lpcbFormat: PDWORD): HResult; stdcall; external AVIFILDLL;
function AVIStreamSetFormat(pavi: PAVISTREAM; lPos: DWORD; lpFormat: PVOID; cbFormat: DWORD): HResult; stdcall; external AVIFILDLL;
function AVIStreamReadData(pavi: PAVISTREAM; fcc: DWORD; lp: PVOID; lpcb: PDWORD): HResult; stdcall; external AVIFILDLL;
function AVIStreamWriteData(pavi: PAVISTREAM; fcc: DWORD; lp: PVOID; cb: DWORD): HResult; stdcall; external AVIFILDLL;

function AVIStreamRead(
pavi : PAVISTREAM;
lStart : DWORD;
lSamples : DWORD;
lpBuffer : PVOID;
cbBuffer : DWORD;
plBytes : PDWORD;
plSamples : PDWORD
): HResult; stdcall; external AVIFILDLL;

function AVIStreamWrite(
pavi : PAVISTREAM;
lStart,
lSamples : DWORD;
lpBuffer : PVOID;
cbBuffer : DWORD;
dwFlags : DWORD;
plSampWritten : PDWORD;
plBytesWritten : PDWORD
): HResult; stdcall; external AVIFILDLL;

// Right now, these just use AVIStreamInfo() to get information, then
// return some of it. Can they be more efficient?

function AVIStreamStart(pavi: PAVISTREAM): DWORD; stdcall; external AVIFILDLL;
function AVIStreamLength(pavi: PAVISTREAM): DWORD; stdcall; external AVIFILDLL;
function AVIStreamTimeToSample(pavi: PAVISTREAM; lTime: DWORD): DWORD; stdcall; external AVIFILDLL;
function AVIStreamSampleToTime(pavi: PAVISTREAM; lSample: DWORD): DWORD; stdcall; external AVIFILDLL;

function AVIStreamBeginStreaming(pavi: PAVISTREAM; lStart, lEnd: DWORD; lRate: DWORD): HResult; stdcall; external AVIFILDLL;
function AVIStreamEndStreaming(pavi: PAVISTREAM): HResult; stdcall; external AVIFILDLL;

{-- Helper functions for using IGetFrame -------------------------------------}

function AVIStreamGetFrameOpen(pavi: PAVISTREAM; lpbiWanted: PBITMAPINFOHEADER): PGETFRAME; stdcall; external AVIFILDLL;
function AVIStreamGetFrame(pg: PGETFRAME; lPos: DWORD): PVOID; stdcall; external AVIFILDLL;
function AVIStreamGetFrameClose(pg: PGETFRAME): HResult; stdcall; external AVIFILDLL;

// !!! We need some way to place an advise on a stream....
// STDAPI AVIStreamHasChanged (PAVISTREAM pavi);

{-- Shortcut function --------------------------------------------------------}

function AVIStreamOpenFromFileA(var ppavi: PAVISTREAM; szFile: LPCSTR; fccType: DWORD;
lParam: DWORD; mode: UINT; pclsidHandler: PCLSID): HResult; stdcall; external AVIFILDLL;
function AVIStreamOpenFromFileW(var ppavi: PAVISTREAM; szFile: LPCWSTR; fccType: DWORD;
lParam: DWORD; mode: UINT; pclsidHandler: PCLSID): HResult; stdcall; external AVIFILDLL;

function AVIStreamOpenFromFile(var ppavi: PAVISTREAM; szFile: LPCSTR; fccType: DWORD;
lParam: DWORD; mode: UINT; pclsidHandler: PCLSID): HResult; stdcall; external AVIFILDLL name 'AVIStreamOpenFromFileA';

{-- Use to create disembodied streams ----------------------------------------}

function AVIStreamCreate(var ppavi: PAVISTREAM; lParam1, lParam2: DWORD;
pclsidHandler: PCLSID): HResult; stdcall; external AVIFILDLL;

// PHANDLER AVIAPI AVIGetHandler (PAVISTREAM pavi, PAVISTREAMHANDLER psh);
// PAVISTREAM AVIAPI AVIGetStream (PHANDLER p);

{-- Stuff to support backward compat. ----------------------------------------}

function AVIStreamFindKeyFrame(pavi: PAVISTREAM; lPos: DWORD; lFlags: DWORD): DWORD; stdcall; external AVIFILDLL name 'AVIStreamFindSample';

// Non-portable: this is alias for method name
// FindKeyFrame FindSample

function AVIStreamClose(pavi: PAVISTREAM): UDWORD; stdcall; external AVIFILDLL name 'AVIStreamRelease';
function AVIFileClose(pfile: PAVIFILE): UDWORD; stdcall; external AVIFILDLL name 'AVIFileRelease';
procedure AVIStreamInit; stdcall; external AVIFILDLL name 'AVIFileInit';
procedure AVIStreamExit; stdcall; external AVIFILDLL name 'AVIFileExit';

{== AVISave routines and structures ==========================================}

function AVIMakeCompressedStream(
var ppsCompressed : PAVISTREAM;
ppsSource : PAVISTREAM;
lpOptions : PAVICOMPRESSOPTIONS;
pclsidHandler : PCLSID
): HResult; stdcall; external AVIFILDLL;

// Non-portable: uses variable number of params
// EXTERN_C HRESULT CDECL AVISaveA (LPCSTR szFile,
// CLSID FAR *pclsidHandler,
// AVISAVECALLBACK lpfnCallback,
// int nStreams,
// PAVISTREAM pfile,
// LPAVICOMPRESSOPTIONS lpOptions,
// ...);

function AVISaveVA(
szFile : LPCSTR;
pclsidHandler : PCLSID;
lpfnCallback : TAVISAVECALLBACK;
nStreams : int;
var ppavi : PAVISTREAM;
var plpOptions : PAVICOMPRESSOPTIONS
): HResult; stdcall; external AVIFILDLL;

// Non-portable: uses variable number of params
// EXTERN_C HRESULT CDECL AVISaveW (LPCWSTR szFile,
// CLSID FAR *pclsidHandler,
// AVISAVECALLBACK lpfnCallback,
// int nStreams,
// PAVISTREAM pfile,
// LPAVICOMPRESSOPTIONS lpOptions,
// ...);

function AVISaveVW(
szFile : LPCWSTR;
pclsidHandler : PCLSID;
lpfnCallback : TAVISAVECALLBACK;
nStreams : int;
var ppavi : PAVISTREAM;
var plpOptions : PAVICOMPRESSOPTIONS
): HResult; stdcall; external AVIFILDLL;

// #define AVISave AVISaveA

function AVISaveV(
szFile : LPCSTR;
pclsidHandler : PCLSID;
lpfnCallback : TAVISAVECALLBACK;
nStreams : int;
var ppavi : PAVISTREAM;
var plpOptions : PAVICOMPRESSOPTIONS
): HResult; stdcall; external AVIFILDLL name 'AVISaveVA';

function AVISaveOptions(
hwnd : HWND;
uiFlags : UINT;
nStreams : int;
var ppavi : PAVISTREAM;
var plpOptions : PAVICOMPRESSOPTIONS
): BOOL; stdcall; external AVIFILDLL;

function AVISaveOptionsFree(nStreams: int; var plpOptions: PAVICOMPRESSOPTIONS): HResult; stdcall; external AVIFILDLL;

{-----------------------------------------------------------------------------}

function AVIBuildFilterW(lpszFilter: LPWSTR; cbFilter: DWORD; fSaving: BOOL): HResult; stdcall; external AVIFILDLL;
function AVIBuildFilterA(lpszFilter: LPSTR; cbFilter: DWORD; fSaving: BOOL): HResult; stdcall; external AVIFILDLL;

function AVIBuildFilter(lpszFilter: LPSTR; cbFilter: DWORD; fSaving: BOOL): HResult; stdcall; external AVIFILDLL name 'AVIBuildFilterA';

function AVIMakeFileFromStreams(var ppfile: PAVIFILE; nStreams: int; var papStreams: PAVISTREAM): HResult; stdcall; external AVIFILDLL;

function AVIMakeStreamFromClipboard(cfFormat: UINT; hGlobal: THANDLE; var ppstream: PAVISTREAM): HResult; stdcall; external AVIFILDLL;

{-- Clipboard routines -------------------------------------------------------}

function AVIPutFileOnClipboard(pf: PAVIFILE): HResult; stdcall; external AVIFILDLL;
function AVIGetFromClipboard(var lppf: PAVIFILE): HResult; stdcall; external AVIFILDLL;
function AVIClearClipboard: HResult; stdcall; external AVIFILDLL;

{-- Editing routines ---------------------------------------------------------}

function CreateEditableStream(var ppsEditable: PAVISTREAM; psSource: PAVISTREAM): HResult; stdcall; external AVIFILDLL;

function EditStreamCut(pavi: PAVISTREAM; plStart, plLength: PDWORD; var ppResult: PAVISTREAM): HResult; stdcall; external AVIFILDLL;
function EditStreamCopy(pavi: PAVISTREAM; plStart, plLength: PDWORD; var ppResult: PAVISTREAM): HResult; stdcall; external AVIFILDLL;
function EditStreamPaste(pavi: PAVISTREAM; plPos, plLength: PDWORD; pstream: PAVISTREAM; lStart, lEnd: DWORD): HResult; stdcall; external AVIFILDLL;
function EditStreamClone(pavi: PAVISTREAM; var ppResult: PAVISTREAM): HResult; stdcall; external AVIFILDLL;

function EditStreamSetNameA(pavi: PAVISTREAM; lpszName: LPCSTR): HResult; stdcall; external AVIFILDLL;
function EditStreamSetNameW(pavi: PAVISTREAM; lpszName: LPCWSTR): HResult; stdcall; external AVIFILDLL;
function EditStreamSetInfoW(pavi: PAVISTREAM; lpInfo: PAVISTREAMINFOW; cbInfo: DWORD): HResult; stdcall; external AVIFILDLL;
function EditStreamSetInfoA(pavi: PAVISTREAM; lpInfo: PAVISTREAMINFOA; cbInfo: DWORD): HResult; stdcall; external AVIFILDLL;

function EditStreamSetInfo(pavi: PAVISTREAM; lpInfo: PAVISTREAMINFOA; cbInfo: DWORD): HResult; stdcall; external AVIFILDLL name 'EditStreamSetInfoA';
function EditStreamSetName(pavi: PAVISTREAM; lpszName: LPCSTR): HResult; stdcall; external AVIFILDLL name 'EditStreamSetNameA';

{-- MCIWnd -------------------------------------------------------------------}

function MCIWndCreateA(hwndParent: HWND; hInstance: HINST; dwStyle: DWORd; szFile: LPCSTR): HWND; cdecl; external VFWDLL;
function MCIWndCreateW(hwndParent: HWND; hInstance: HINST; dwStyle: DWORd; szFile: LPCWSTR): HWND; cdecl; external VFWDLL;

function MCIWndCreate(hwndParent: HWND; hInstance: HINST; dwStyle: DWORd; szFile: LPCSTR): HWND; cdecl; external VFWDLL name 'MCIWndCreateA';

function MCIWndRegisterClass: BOOL; cdecl; external VFWDLL;

{== AVICAP - Window class for AVI capture ====================================}

{-- The only exported functions from AVICAP.DLL ------------------------------}

function capCreateCaptureWindowA(
lpszWindowName : LPCSTR;
dwStyle : DWORD;
x, y : int;
nWidth, nHeight : int;
hwndParent : HWND;
nID : int
): HWND; stdcall; external AVICAPDLL;

function capGetDriverDescriptionA(
wDriverIndex : UINT;
lpszName : LPSTR;
cbName : int;
lpszVer : LPSTR;
cbVer : int
): BOOL; stdcall; external AVICAPDLL;

function capCreateCaptureWindowW(
lpszWindowName : LPCWSTR;
dwStyle : DWORD;
x, y : int;
nWidth, nHeight : int;
hwndParent : HWND;
nID : int
): HWND; stdcall; external AVICAPDLL;

function capGetDriverDescriptionW(
wDriverIndex : UINT;
lpszName : LPWSTR;
cbName : int;
lpszVer : LPWSTR;
cbVer : int
): BOOL; stdcall; external AVICAPDLL;

function capCreateCaptureWindow(
lpszWindowName : LPCSTR;
dwStyle : DWORD;
x, y : int;
nWidth, nHeight : int;
hwndParent : HWND;
nID : int
): HWND; stdcall; external AVICAPDLL name 'capCreateCaptureWindowA';

function capGetDriverDescription(
wDriverIndex : UINT;
lpszName : LPSTR;
cbName : int;
lpszVer : LPSTR;
cbVer : int
): BOOL; stdcall; external AVICAPDLL name 'capGetDriverDescriptionA';

{== FilePreview dialog =======================================================}

function GetOpenFileNamePreviewA(lpofn: POPENFILENAMEA): BOOL; stdcall; external VFWDLL;
function GetSaveFileNamePreviewA(lpofn: POPENFILENAMEA): BOOL; stdcall; external VFWDLL;

function GetOpenFileNamePreviewW(lpofn: POPENFILENAMEW): BOOL; stdcall; external VFWDLL;
function GetSaveFileNamePreviewW(lpofn: POPENFILENAMEW): BOOL; stdcall; external VFWDLL;

function GetOpenFileNamePreview(lpofn: POPENFILENAMEA): BOOL; stdcall; external VFWDLL name 'GetOpenFileNamePreviewA';
function GetSaveFileNamePreview(lpofn: POPENFILENAMEA): BOOL; stdcall; external VFWDLL name 'GetSaveFileNamePreviewA';

end.


来自: yux3951, 时间: 2004-04-15 22:14:28, ID: 2562057
小弟也在搞！望多指教！

来自: 大愚, 时间: 2004-04-22 9:41:20, ID: 2573612
app2001,非常谢谢你！你的这方面的高手吧？我还没完全弄明白，还在研究，VFW的代码太多了。但这好像是取一个本地视频的图，我是实时图像的，是不是一样的？VFW能实现摄像头的实时图像的捕获和播放吗？谢谢

来自: app2001, 时间: 2004-04-22 20:33:14, ID: 2575411
哦，抱歉，让你失望了，我是资料收藏者，对这方面没有更深的研究，实在惭愧得很，若你有所心得，还望公布出来，让大家伙儿共享一下为好。

来自: 大愚, 时间: 2004-04-23 22:14:43, ID: 2577691
不好意思啊，我也只是看了dspack的demo，照葫芦画瓢，还没画好，但问题越来越多了，例如分辨率不匹配的时候，画面就会一顿一顿的，不知如何实时调整画面的对比度及色彩等。越来越觉得自己学的东西太少了。

来自: wyn990729, 时间: 2004-04-29 16:33:33, ID: 2588170
vfw可以实现时时图象捕放,把每张图片数据存进AVISREAM就可以了

来自: 大愚, 时间: 2004-05-13 10:50:04, ID: 2607504
wyn990729:能给个简单的例子吗?最好是全屏的，谢谢

来自: qnaqbgss, 时间: 2004-05-14 20:40:57, ID: 2610963
需不需要VFW控件啊？我有FOR D6、D5版的。

完全可以满足你的要求，本人开发的“贴纸相”软件就是用的这个控件。

要的话：QQ15104368


来自: 大愚, 时间: 2004-05-25 11:52:44, ID: 2626493
感谢大家的回答,谢谢!

问题讨论没有结束 ...