AVICAP （全）

unit vfw;

interface

uses
Windows, MMSystem, Messages;

const
// ------------------------------------------------------------------
// Window Messages WM_CAP... which can be sent to an AVICAP window
// ------------------------------------------------------------------

// Defines start of the message range
WM_CAP_START = WM_USER;

WM_CAP_GET_CAPSTREAMPTR = (WM_CAP_START+ 1);
WM_CAP_SET_CALLBACK_ERROR = (WM_CAP_START+ 2);
WM_CAP_SET_CALLBACK_STATUS = (WM_CAP_START+ 3);
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_NAME = (WM_CAP_START+ 12);
WM_CAP_DRIVER_GET_VERSION = (WM_CAP_START+ 13);
WM_CAP_DRIVER_GET_CAPS = (WM_CAP_START+ 14);

WM_CAP_FILE_SET_CAPTURE_FILE = (WM_CAP_START+ 20);
WM_CAP_FILE_GET_CAPTURE_FILE = (WM_CAP_START+ 21);
WM_CAP_FILE_ALLOCATE = (WM_CAP_START+ 22);
WM_CAP_FILE_SAVEAS = (WM_CAP_START+ 23);
WM_CAP_FILE_SET_INFOCHUNK = (WM_CAP_START+ 24);
WM_CAP_FILE_SAVEDIB = (WM_CAP_START+ 25);

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_DEVICE = (WM_CAP_START+ 66);
WM_CAP_GET_MCI_DEVICE = (WM_CAP_START+ 67);
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_OPEN = (WM_CAP_START+ 80);
WM_CAP_PAL_SAVE = (WM_CAP_START+ 81);
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_END = WM_CAP_SET_CALLBACK_CAPCONTROL;

// dwFlags field of TVIDEOHDR
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 */

// ------------------------------------------------------------------
// Structures
// ------------------------------------------------------------------

type
PCapDriverCaps = ^TCapDriverCaps;
TCapDriverCaps = record
wDeviceIndex :WORD; // 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?
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;

pCaptureParms = ^TCaptureParms;
TCaptureParms = record // Default values in parenthesis
dwRequestMicroSecPerFrame :DWORD; // Requested capture rate
fMakeUserHitOKToCapture :BOOL; // Show "Hit OK to cap" 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;

PCapInfoChunk = ^TCapInfoChunk;
TCapInfoChunk = record
fccInfoID :FOURCC; // Chunk ID, "ICOP" for copyright
lpData :Pointer; // pointer to data
cbData :LongInt; // size of lpData
end;

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..4] of DWORD; // reserved for driver
end;

// ------------------------------------------------------------------
// Callback Definitions
// ------------------------------------------------------------------
type
TCAPSTATUSCALLBACK = function(hWnd:HWND; nID:Integer; lpsz:PChar):LongInt; stdcall;
TCAPYIELDCALLBACK = function(hWnd:HWND):LongInt; stdcall;
TCAPERRORCALLBACK = function(hWnd:HWND; nID:Integer; lpsz:Pchar):LongInt; stdcall;
TCAPVIDEOSTREAMCALLBACK = function(hWnd:HWND; lpVHdr:PVIDEOHDR):LongInt; stdcall;
TCAPWAVESTREAMCALLBACK = function(hWnd:HWND; lpWHdr:PWAVEHDR):LongInt; stdcall;
TCAPCONTROLCALLBACK = function(hWnd:HWND; nState:Integer):LongInt; stdcall;
// ------------------------------------------------------------------
// CapControlCallback states
// ------------------------------------------------------------------
Const
CONTROLCALLBACK_PREROLL = 1; // Waiting to start capture
CONTROLCALLBACK_CAPTURING = 2; // Now capturing

// ------------------------------------------------------------------
// Message crackers for above
// ------------------------------------------------------------------
function capSetCallbackOnError (hwnd : THandle; fpProc:TCAPERRORCALLBACK):LongInt;
function capSetCallbackOnStatus(hwnd : THandle; fpProc:TCAPSTATUSCALLBACK):LongInt;
function capSetCallbackOnYield (hwnd : THandle; fpProc:TCAPYIELDCALLBACK):LongInt;
function capSetCallbackOnFrame (hwnd : THandle; fpProc:TCAPVIDEOSTREAMCALLBACK):LongInt; // Hier ist der Type der Callbackfunktion nicht klar !
function capSetCallbackOnVideoStream(hwnd:THandle; fpProc:TCAPVIDEOSTREAMCALLBACK):LongInt;
function capSetCallbackOnWaveStream (hwnd:THandle; fpProc: TCAPWAVESTREAMCALLBACK):LongInt;
function capSetCallbackOnCapControl (hwnd:THandle; fpProc:TCAPCONTROLCALLBACK):LongInt;

function capSetUserData(hwnd:THandle; lUser:LongInt):LongInt;
function capGetUserData(hwnd:THandle):LongInt;

function capDriverConnect(hwnd:THandle; I: Word) : boolean;
function capDriverDisconnect(hwnd:THandle):boolean;

function capDriverGetName(hwnd:THandle; szName:PChar; wSize:Word):boolean;
function capDriverGetVersion(hwnd:THandle; szVer:PChar; wSize:Word):Boolean;
function capDriverGetCaps(hwnd:THandle; s:PCapDriverCaps; wSize:Word):boolean;

function capFileSetCaptureFile(hwnd:THandle; szName:PChar):boolean;
function capFileGetCaptureFile(hwnd:THandle; szName:PChar; wSize:Word):boolean;
function capFileAlloc(hwnd:THandle; dwSize:DWORD):boolean;
function capFileSaveAs(hwnd:THandle; szName:Pchar):boolean;
function capFileSetInfoChunk(hwnd:THandle; lpInfoChunk:pCapInfoChunk):boolean ;
function capFileSaveDIB(hwnd:THandle; szName:Pchar):boolean;

function capEditCopy(hwnd : THandle):boolean;

function capSetAudioFormat(hwnd:THandle; s:PWaveFormatEx; wSize:Word):Boolean;
function capGetAudioFormat(hwnd:THandle; s:PWaveFormatEx; wSize:Word):DWORD;
function capGetAudioFormatSize(hwnd:THandle):DWORD;

function capDlgVideoFormat(hwnd:THandle):boolean;
function capDlgVideoSource(hwnd:THandle):boolean;
function capDlgVideoDisplay(hwnd:THandle):boolean;
function capDlgVideoCompression(hwnd:THandle):boolean;

function capGetVideoFormat(hwnd:THandle; s:pBitmapInfo; wSize:Word):DWord;
function capGetVideoFormatSize(hwnd:THandle):DWORD;

function capSetVideoFormat(hwnd:THandle; s:pBitmapInfo; wSize:Word):boolean;

function capPreview(hwnd:THandle; f:boolean):boolean;
function capPreviewRate(hwnd:THandle; wMS:Word):boolean;
function capOverlay(hwnd:THandle; f:boolean):boolean;
function capPreviewScale(hwnd:THandle; f:boolean):boolean;
function capGetStatus(hwnd:THandle; s:pCapStatus; wSize:Word):boolean;
function capSetScrollPos(hwnd:THandle; lpP:pPoint):boolean;

function capGrabFrame(hwnd:THandle):boolean;
function capGrabFrameNoStop(hwnd:THandle):boolean;

function capCaptureSequence(hwnd:THandle):Boolean;
function capCaptureSequenceNoFile(hwnd:THandle):Boolean;
function capCaptureStop(hwnd:THandle):boolean;
function capCaptureAbort(hwnd:THandle):boolean;

function capCaptureSingleFrameOpen(hwnd:THandle):boolean;
function capCaptureSingleFrameClose(hwnd:THandle):boolean;
function capCaptureSingleFrame(hwnd:THandle):boolean;

function capCaptureGetSetup(hwnd:THandle; s:pCaptureParms; wSize:Word):boolean;
function capCaptureSetSetup(hwnd:THandle; s:pCaptureParms; wSize:Word):boolean;

function capSetMCIDeviceName(hwnd:THandle; szName:PChar):boolean;
function capGetMCIDeviceName(hwnd:THandle; szName:PChar; wSize:Word):boolean;

function capPaletteOpen(hwnd:THandle; szName:PChar):boolean;
function capPaletteSave(hwnd:THandle; szName:PChar):boolean;
function capPalettePaste(hwnd:THandle):Boolean;
function capPaletteAuto(hwnd:THandle; iFrames:Word; iColors:word):boolean;
function capPaletteManual(hwnd:THandle; fGrab:Word; iColors:word):boolean;

// ------------------------------------------------------------------
// The only exported functions from AVICAP.DLL
// ------------------------------------------------------------------
function capCreateCaptureWindow (
lpszWindowName : PChar;
dwStyle : DWord;
x, y : Integer;
nWidth, nHeight : Integer;
hwndParent : THandle;
nID : Integer ) : THandle; stdcall;

function capGetDriverDescription (
wDriverIndex : DWord;
lpszName : PChar;
cbName : Integer;
lpszVer : PChar;
cbVer : Integer ) : Boolean; stdcall;

// ------------------------------------------------------------------
// New Information chunk IDs
// ------------------------------------------------------------------
(*
infotypeDIGITIZATION_TIME = mmioStringToFOURCC(PChar('IDIT'), MMIO_TOUPPER);
infotypeSMPTE_TIME = mmioStringToFOURCC(PChar('ISMP'), MMIO_TOUPPER);
*)

// ------------------------------------------------------------------
// String IDs from status and error callbacks
// ------------------------------------------------------------------
Const
IDS_CAP_BEGIN = 300; (* "Capture Start" *)
IDS_CAP_END = 301; (* "Capture End" *)

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

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

IDS_CAP_DRIVER_ERROR = 418; (* Driver specific error message *)

IDS_CAP_WAVE_OPEN_ERROR = 419; (* "Error: Cannot open the wave input device. Check sample size, frequency, and channels." *)
IDS_CAP_WAVE_ALLOC_ERROR = 420; (* "Error: Out of memory for wave buffers." *)
IDS_CAP_WAVE_PREPARE_ERROR = 421; (* "Error: Cannot prepare wave buffers." *)
IDS_CAP_WAVE_ADD_ERROR = 422; (* "Error: Cannot add wave buffers." *)
IDS_CAP_WAVE_SIZE_ERROR = 423; (* "Error: Bad wave size." *)

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

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

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

{== 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): Pointer;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: integer; 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 : integer;
dyDst : integer;
lpbi : PBITMAPINFOHEADER;
dxSrc : integer;
dySrc : integer;
wFlags : UINT
): BOOL; stdcall;

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

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

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

//function DrawDibUpdate(hdd: HDRAWDIB; hdc: HDC; x, y: integer): BOOL;stdcall;

{-- 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;

// Helper fucntion for FOURCC

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 "render" 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(TICOPEN)
fccType : DWORD ; // 'vidc'
fccHandler : DWORD ; //
dwVersion : DWORD ; // version of compman opening you
dwFlags : DWORD ; // LOWORD is type specific
dwError : DWORD ; // error return.
pV1Reserved : Pointer ; // Reserved
pV2Reserved : Pointer ; // Reserved
dnDevNode : DWORD ; // Devnode for PnP devices
end;

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

PICINFO = ^TICINFO ;
TICINFO = record
dwSize : DWORD; // sizeof(TICINFO)
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 field of the 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 : Pointer ; // output data

lpbiInput : PBITMAPINFOHEADER ; // format of frame to compress
lpInput : Pointer ; // 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 : Pointer ; // previous frame
end;

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

const
ICCOMPRESSFRAMES_PADDING = $00000001 ;

type
TICCompressProc = function(lInput: LPARAM; lFrame: DWORD; lpBits: Pointer; 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 : Pointer ; // compressed data
lpbiOutput : PBITMAPINFOHEADER ; // DIB to decompress to
lpOutput : Pointer ;
ckid : DWORD ; // ckid from AVI file
end;

PICDECOMPRESSEX = ^TICDECOMPRESSEX;
TICDECOMPRESSEX = record

//
// same as ICM_DECOMPRESS
//

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

//
// new for ICM_DECOMPRESSEX
//

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

xSrc : integer ; // source rectangle
ySrc : integer ;
dxSrc : integer ;
dySrc : integer ;
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 : integer ; // destination rectangle
yDst : integer ;
dxDst : integer ;
dyDst : integer ;

lpbi : PBITMAPINFOHEADER ;
// format of frame to draw

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

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 : Pointer ; // format of frame to decompress
lpData : Pointer ; // 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 : integer ; // source extent or 0
dySrc : integer ;
dxDst : integer ; // dest extent or 0
dyDst : integer ;
hicDecompressor : HIC ; // decompressor you can talk to
end;

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

PICPALETTE = ^TICPALETTE;
TICPALETTE = record
dwFlags : DWORD ; // flags (from AVI index...)
iStart : integer ; // first palette to change
iLen : integer ; // 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: integer) : 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: Pointer; cb: DWORD): DWORD;
function ICSetState(hic: HIC; pv: Pointer; 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 : Pointer; // output data
lpbiInput : PBITMAPINFOHEADER; // format of frame to compress
lpBits : Pointer; // 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 : Pointer // 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 : Pointer; // data
lpbi : PBITMAPINFOHEADER; // DIB to decompress to
lpBits : Pointer
): 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 : Pointer;
xSrc : integer;
ySrc : integer;
dxSrc : integer;
dySrc : integer;
lpbiDst : PBITMAPINFOHEADER;
lpDst : Pointer;
xDst : integer;
yDst : integer;
dxDst : integer;
dyDst : integer
): DWORD; stdcall;

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

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

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

function ICDecompressExQuery(
hic : HIC;
dwFlags : DWORD;
lpbiSrc : PBITMAPINFOHEADER;
lpSrc : Pointer;
xSrc : integer;
ySrc : integer;
dxSrc : integer;
dySrc : integer;
lpbiDst : PBITMAPINFOHEADER;
lpDst : Pointer;
xDst : integer;
yDst : integer;
dxDst : integer;
dyDst : integer
): 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 : integer; // destination rectangle
yDst : integer;
dxDst : integer;
dyDst : integer;
lpbi : PBITMAPINFOHEADER; // format of frame to draw
xSrc : integer; // source rectangle
ySrc : integer;
dxSrc : integer;
dySrc : integer;
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 : Pointer; // format of frame to decompress
lpData : Pointer; // 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 : integer;
dySrc : integer;
dxDst : integer;
dyDst : integer;
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: integer; dx, dy: integer): 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 : Pointer; // 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 : Pointer; // 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
// "" or "DIB "
lpbiIn : PBITMAPINFO; // input format
lpbiOut : PBITMAPINFO; // output format - will compress to this
lpBitsOut : Pointer;
lpBitsPrev : Pointer;
lFrame : DWORD;
lKey : DWORD; // key frames how often?
lDataRate : DWORD; // desired data rate KB/Sec
lQ : DWORD; // desired quality
lKeyCount : DWORD;
lpState : Pointer; // 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 : Pointer; // input format (optional)
lpData : Pointer; // 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 : Pointer; // input DIB bits
pfKey : PBOOL; // did it end up being a key frame?
plSize : PDWORD // size to compress to/of returned image
): Pointer; stdcall;

procedure ICCompressorFree(pc: PCOMPVARS); stdcall;

implementation

// Dlls

const
AVICAP32 = 'AVICAP32.dll';
VFWDLL = 'MSVFW32.DLL';

(* Externals from AVICAP.DLL *)
function capGetDriverDescription; external AVICAP32 name 'capGetDriverDescriptionA';
function capCreateCaptureWindow; external AVICAP32 name 'capCreateCaptureWindowA';

(* Message crackers for above *)
function capSetCallbackOnError(hwnd : THandle; fpProc:TCAPERRORCALLBACK) : LongInt;
begin
Result := SendMessage(hwnd, WM_CAP_SET_CALLBACK_ERROR, 0,LPARAM(@fpProc));
end;

function capSetCallbackOnStatus(hwnd : THandle; fpProc:TCAPSTATUSCALLBACK):LongInt;
begin
Result := SendMessage(hwnd, WM_CAP_SET_CALLBACK_STATUS, 0, LPARAM(@fpProc));
end;

function capSetCallbackOnYield (hwnd : THandle; fpProc:TCAPYIELDCALLBACK):LongInt;
begin
Result := SendMessage(hwnd, WM_CAP_SET_CALLBACK_YIELD, 0, LPARAM(@fpProc));
end;

function capSetCallbackOnFrame (hwnd : THandle; fpProc:TCAPVIDEOSTREAMCALLBACK):LongInt;
begin
Result := SendMessage(hwnd, WM_CAP_SET_CALLBACK_FRAME, 0,LPARAM( @fpProc));
end;

function capSetCallbackOnVideoStream(hwnd:THandle; fpProc:TCAPVIDEOSTREAMCALLBACK):LongInt;
begin
Result := SendMessage(hwnd, WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, LPARAM(@fpProc));
end;

function capSetCallbackOnWaveStream (hwnd:THandle; fpProc:TCAPWAVESTREAMCALLBACK):LongInt;
begin
Result := SendMessage(hwnd, WM_CAP_SET_CALLBACK_WAVESTREAM, 0, LPARAM(@fpProc));
end;

function capSetCallbackOnCapControl (hwnd:THandle; fpProc:TCAPCONTROLCALLBACK):longint;
begin
Result := SendMessage(hwnd, WM_CAP_SET_CALLBACK_CAPCONTROL, 0, LPARAM(@fpProc));
end;

function capSetUserData(hwnd:THandle; lUser:LongInt):LongInt;
begin
Result := SendMessage(hwnd, WM_CAP_SET_USER_DATA, 0, lUser);
end;

function capGetUserData(hwnd:THandle):LongInt;
begin
Result := SendMessage(hwnd, WM_CAP_GET_USER_DATA, 0, 0);
end;

function capDriverConnect(hwnd:THandle; I: Word) : boolean;
begin
Result :=boolean( SendMessage(hwnd, WM_CAP_DRIVER_CONNECT, WPARAM(I), 0));
end;

function capDriverDisconnect(hwnd:THandle):Boolean;
begin
Result := boolean(SendMessage(hwnd, WM_CAP_DRIVER_DISCONNECT, 0, 0));
end;

function capDriverGetName(hwnd:THandle; szName:PChar; wSize:Word):boolean;
begin
Result :=boolean( SendMessage(hwnd, WM_CAP_DRIVER_GET_NAME, WPARAM(wSize), LPARAM( szName)));
end;

function capDriverGetVersion(hwnd:THandle; szVer:PChar; wSize:Word):boolean;
begin
Result :=boolean( SendMessage(hwnd, WM_CAP_DRIVER_GET_VERSION, WPARAM(wSize),LPARAM( szVer)));
end;

function capDriverGetCaps(hwnd:THandle; s:pCapDriverCaps; wSize:Word):boolean;
begin
Result := boolean(SendMessage(hwnd, WM_CAP_DRIVER_GET_CAPS, WPARAM(wSize),LPARAM(s)));
end;

function capFileSetCaptureFile(hwnd:THandle; szName:PChar):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_SET_CAPTURE_FILE, 0, LPARAM(szName)));
end;

function capFileGetCaptureFile(hwnd:THandle; szName:PChar; wSize:Word):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_GET_CAPTURE_FILE, wSize, LPARAM(szName)));
end;

function capFileAlloc(hwnd:THandle; dwSize:DWord):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_ALLOCATE, 0, LPARAM(dwSize)));
end;

function capFileSaveAs(hwnd:THandle; szName:Pchar):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_SAVEAS, 0,LPARAM(szName)));
end;

function capFileSetInfoChunk(hwnd:THandle; lpInfoChunk:pCapInfoChunk):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_SET_INFOCHUNK, 0, LPARAM(lpInfoChunk)));
end;

function capFileSaveDIB(hwnd:THandle; szName:Pchar):Boolean;
begin
Result :=Boolean(SendMessage(hwnd, WM_CAP_FILE_SAVEDIB, 0,LPARAM(szName)));
end;

function capEditCopy(hwnd : THandle):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_EDIT_COPY, 0, 0));
end;

function capSetAudioFormat(hwnd:THandle; s:PWaveFormatEx; wSize:Word):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SET_AUDIOFORMAT, WPARAM(wSize),LPARAM(s)));
end;

function capGetAudioFormat(hwnd:THandle; s:PWaveFormatEx; wSize:Word):DWORD;
begin
Result :=DWORD( SendMessage(hwnd, WM_CAP_GET_AUDIOFORMAT, WPARAM(wSize),LPARAM(s)));
end;

function capGetAudioFormatSize(hwnd:THandle):DWORD;
begin
Result := DWORD(SendMessage(hwnd, WM_CAP_GET_AUDIOFORMAT, 0, 0));
end;

function capDlgVideoFormat(hwnd:THandle):boolean;
begin
Result :=boolean(SendMessage(hwnd, WM_CAP_DLG_VIDEOFORMAT, 0, 0));
end;

function capDlgVideoSource(hwnd:THandle):boolean;
begin
Result :=boolean (SendMessage(hwnd, WM_CAP_DLG_VIDEOSOURCE, 0, 0));
end;

function capDlgVideoDisplay(hwnd:THandle):boolean;
begin
Result := boolean(SendMessage(hwnd, WM_CAP_DLG_VIDEODISPLAY, 0, 0));
end;

function capDlgVideoCompression(hwnd:THandle):boolean;
begin
Result := boolean(SendMessage(hwnd, WM_CAP_DLG_VIDEOCOMPRESSION, 0, 0));
end;

function capGetVideoFormat(hwnd:THandle; s:pBitmapInfo; wSize:Word):DWord;
begin
Result := DWord(SendMessage(hwnd, WM_CAP_GET_VIDEOFORMAT, Wparam(wSize), LPARAM(s)));
end;

function capGetVideoFormatSize(hwnd:THandle):DWord;
begin
Result := DWord(SendMessage(hwnd, WM_CAP_GET_VIDEOFORMAT, 0, 0));
end;

function capSetVideoFormat(hwnd:THandle; s:PBitmapInfo; wSize:Word):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SET_VIDEOFORMAT, WPARAM(wSize), LPARAM(s)));
end;

function capPreview(hwnd:THandle; f:boolean):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SET_PREVIEW, WPARAM(f), 0));
end;

function capPreviewRate(hwnd:THandle; wMS:Word):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SET_PREVIEWRATE, WPARAM(wMS), 0));
end;

function capOverlay(hwnd:THandle; f:boolean):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SET_OVERLAY, WPARAM(f), 0));
end;

function capPreviewScale(hwnd:THandle; f:boolean):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SET_SCALE,WPARAM(f), 0));
end;

function capGetStatus(hwnd:THandle; s:PCapStatus; wSize:Word):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_GET_STATUS, WPARAM(wSize),LPARAM(s)));
end;

function capSetScrollPos(hwnd:THandle; lpP:pPoint):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SET_SCROLL, 0, LParam(lpP)));
end;

function capGrabFrame(hwnd:THandle):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_GRAB_FRAME, 0, 0));
end;

function capGrabFrameNoStop(hwnd:THandle):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_GRAB_FRAME_NOSTOP, 0, 0));
end;

function capCaptureSequence(hwnd:THandle):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SEQUENCE, 0, 0));
end;

function capCaptureSequenceNoFile(hwnd:THandle):boolean;
begin
Result :=Boolean(SendMessage(hwnd, WM_CAP_SEQUENCE_NOFILE, 0, 0));
end;

function capCaptureStop(hwnd:THandle):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_STOP, 0, 0));
end;

function capCaptureAbort(hwnd:THandle):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_ABORT, 0, 0));
end;

function capCaptureSingleFrameOpen(hwnd:THandle):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SINGLE_FRAME_OPEN, 0, 0));
end;

function capCaptureSingleFrameClose(hwnd:THandle):boolean ;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SINGLE_FRAME_CLOSE, 0, 0));
end;

function capCaptureSingleFrame(hwnd:THandle):boolean;
begin
Result :=Boolean(SendMessage(hwnd, WM_CAP_SINGLE_FRAME, 0, 0));
end;

function capCaptureGetSetup(hwnd:THandle; s:pCaptureParms; wSize:Word):boolean;
begin
Result :=Boolean( SendMessage(hwnd, WM_CAP_GET_SEQUENCE_SETUP, WPARAM(wSize),LPARAM(s)));
end;

function capCaptureSetSetup(hwnd:THandle; s:pCaptureParms; wSize:Word):boolean;
begin
Result := Boolean (SendMessage(hwnd, WM_CAP_SET_SEQUENCE_SETUP, WParam(wSize),LParam(s)));
end;

function capSetMCIDeviceName(hwnd:THandle; szName:Pchar):Boolean;
begin
Result :=Boolean( SendMessage(hwnd, WM_CAP_SET_MCI_DEVICE, 0, LParam(szName)));
end;

function capGetMCIDeviceName(hwnd:THandle; szName:Pchar; wSize:Word):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_GET_MCI_DEVICE, Wparam(wSize), LPARAM(szName)));
end;

function capPaletteOpen(hwnd:THandle; szName:PChar):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_PAL_OPEN, 0, LParam(szName)));
end;

function capPaletteSave(hwnd:THandle; szName:PChar):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_PAL_SAVE, 0,LParam(szName)));
end;

function capPalettePaste(hwnd:THandle):Boolean;
begin
Result :=Boolean( SendMessage(hwnd, WM_CAP_PAL_PASTE, 0, 0));
end;

function capPaletteAuto(hwnd:THandle; iFrames:Word; iColors:word):Boolean;
begin
Result :=Boolean( SendMessage(hwnd, WM_CAP_PAL_AUTOCREATE, WPARAM(iFrames),LPARAM(iColors)));
end;

function capPaletteManual(hwnd:THandle; fGrab:Word; iColors:word):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_PAL_MANUALCREATE, WPARAM(fGrab),LPARAM(iColors)));
end;

{== 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): Pointer; 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: integer; 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 : integer;
dyDst : integer;
lpbi : PBITMAPINFOHEADER;
dxSrc : integer;
dySrc : integer;
wFlags : UINT
): BOOL; stdcall; external VFWDLL;

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

function DrawDibDraw(
hdd : HDRAWDIB;
hdc : HDC;
xDst : integer;
yDst : integer;
dxDst : integer;
dyDst : integer;
lpbi : PBITMAPINFOHEADER;
lpBits : Pointer;
xSrc : integer;
ySrc : integer;
dxSrc : integer;
dySrc : integer;
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;

// Installable Compression Manager

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, -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, -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: Pointer; cb: DWORD): DWORD;
begin
Result := ICSendMessage(hic, ICM_GETSTATE, DWORD(pv), cb);
end;

function ICSetState(hic: HIC; pv: Pointer; 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;

{-- 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: integer) : DWORD ; stdcall ; external VFWDLL;

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

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

function ICCompress(
hic : HIC;
dwFlags : DWORD; // flags
lpbiOutput : PBITMAPINFOHEADER; // output format
lpData : Pointer; // output data
lpbiInput : PBITMAPINFOHEADER; // format of frame to compress
lpBits : Pointer; // 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 : Pointer // 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 : Pointer; // data
lpbi : PBITMAPINFOHEADER; // DIB to decompress to
lpBits : Pointer
): 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 : integer; // destination rectangle
yDst : integer;
dxDst : integer;
dyDst : integer;
lpbi : PBITMAPINFOHEADER; // format of frame to draw
xSrc : integer; // source rectangle
ySrc : integer;
dxSrc : integer;
dySrc : integer;
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 : Pointer; // format of frame to decompress
lpData : Pointer; // 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: integer; dx, dy: integer): 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 : Pointer; // 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 : Pointer; // 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 : Pointer; // input format (optional)
lpData : Pointer; // 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 : Pointer; // input DIB bits
pfKey : PBOOL; // did it end up being a key frame?
plSize : PDWORD // size to compress to/of returned image
): Pointer; stdcall; external VFWDLL;

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

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

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

end.