是不是驱动的问题？用那个VFW试下看看。。。网上找的，如下。。。
//vfw.pas文件内容
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;
//do
ne 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;
//do
es capture file exist?
dwCurrentVideoFrame
WORD;
// # of video frames cap'td
dwCurrentVideoFramesDropped
WORD;
// # of video frames dropped
dwCurrentWaveSamples
WORD;
// # of wave samples cap'td
dwCurrentTimeElapsedMS
WORD;
// Elapsed capture duration
hPalCurrent :HPALETTE;
// Current palette in use
fCapturingNow :BOOL;
// Capture in progress?
dwReturn
WORD;
// 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
WORD;
// 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
WORD;
// Max index size in frames (32K)
wChunkGranularity :UINT;
// Junk chunk granularity (2K)
fUsingDOSMemory :BOOL;
// Usedo
S 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
WORD;
// Time to start in MS
dwMCIStopTime
WORD;
// Time to stop in MS
fStepCaptureAt2x :BOOL;
// Perform spatial averaging 2x
wStepCaptureAverageFrames :UINT;
// Temporal average n Frames
dwAudioBufferSize
WORD;
// 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
ointer;
// pointer to data
cbData :LongInt;
// size of lpData
end;
PVIDEOHDR = ^TVIDEOHDR;
TVIDEOHDR = record
lpData
Byte;
// pointer to locked data buffer
dwBufferLength
WORD;
// Length of data buffer
dwBytesUsed
WORD;
// Bytes actually used
dwTimeCaptured
WORD;
// Milliseconds from start of stream
dwUser
WORD;
// for client's use
dwFlags
WORD;
// assorted flags (see defines)
dwReserved: array [0..4] of DWORD;
// reserved for driver
end;
// ------------------------------------------------------------------
// Callback Definitions
// ------------------------------------------------------------------
type
TCAPSTATUSCALLBACK = function(hWnd:HWND;
nID:Integer;
lpsz
Char):LongInt;
stdcall;
TCAPYIELDCALLBACK = function(hWnd:HWND):LongInt;
stdcall;
TCAPERRORCALLBACK = function(hWnd:HWND;
nID:Integer;
lpsz
char):LongInt;
stdcall;
TCAPVIDEOSTREAMCALLBACK = function(hWnd:HWND;
lpVHdr
VIDEOHDR):LongInt;
stdcall;
TCAPWAVESTREAMCALLBACK = function(hWnd:HWND;
lpWHdr
WAVEHDR):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
Char;
wSize:Word):boolean;
function capDriverGetVersion(hwnd:THandle;
szVer
Char;
wSize:Word):Boolean;
function capDriverGetCaps(hwnd:THandle;
s
CapDriverCaps;
wSize:Word):boolean;
function capFileSetCaptureFile(hwnd:THandle;
szName
Char):boolean;
function capFileGetCaptureFile(hwnd:THandle;
szName
Char;
wSize:Word):boolean;
function capFileAlloc(hwnd:THandle;
dwSize
WORD):boolean;
function capFileSaveAs(hwnd:THandle;
szName
char):boolean;
function capFileSetInfoChunk(hwnd:THandle;
lpInfoChunk
CapInfoChunk):boolean ;
function capFileSaveDIB(hwnd:THandle;
szName
char):boolean;
function capEditCopy(hwnd : THandle):boolean;
function capSetAudioFormat(hwnd:THandle;
s
WaveFormatEx;
wSize:Word):Boolean;
function capGetAudioFormat(hwnd:THandle;
s
WaveFormatEx;
wSize:Word)
WORD;
function capGetAudioFormatSize(hwnd:THandle)
WORD;
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
BitmapInfo;
wSize:Word)
Word;
function capGetVideoFormatSize(hwnd:THandle)
WORD;
function capSetVideoFormat(hwnd:THandle;
s
BitmapInfo;
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
CapStatus;
wSize:Word):boolean;
function capSetScrollPos(hwnd:THandle;
lpP
Point):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
CaptureParms;
wSize:Word):boolean;
function capCaptureSetSetup(hwnd:THandle;
s
CaptureParms;
wSize:Word):boolean;
function capSetMCIDeviceName(hwnd:THandle;
szName
Char):boolean;
function capGetMCIDeviceName(hwnd:THandle;
szName
Char;
wSize:Word):boolean;
function capPaletteOpen(hwnd:THandle;
szName
Char):boolean;
function capPaletteSave(hwnd:THandle;
szName
Char):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/nof video sequence/nto %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'./nDisk 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./nCheck 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./nConfirm that vertical sync interrupts/nare 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./nCheck 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;
//do
nt 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 <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 ;
//do
es not need prev frame on compress
VIDCF_FASTTEMPORALD = $0080 ;
//do
es 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 = %do
ne
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 ;
//do
n't draw just buffer (hurry up!)
ICDECOMPRESS_UPDATE = $40000000 ;
//do
n'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 ;
//do
n't draw just buffer (hurry up!)
ICDRAW_UPDATE = $40000000 ;
//do
n'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
// todo
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;
//do
n'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
Char;
wSize:Word):boolean;
begin
Result :=boolean( SendMessage(hwnd, WM_CAP_DRIVER_GET_NAME, WPARAM(wSize), LPARAM( szName)));
end;
function capDriverGetVersion(hwnd:THandle;
szVer
Char;
wSize:Word):boolean;
begin
Result :=boolean( SendMessage(hwnd, WM_CAP_DRIVER_GET_VERSION, WPARAM(wSize),LPARAM( szVer)));
end;
function capDriverGetCaps(hwnd:THandle;
s
CapDriverCaps;
wSize:Word):boolean;
begin
Result := boolean(SendMessage(hwnd, WM_CAP_DRIVER_GET_CAPS, WPARAM(wSize),LPARAM(s)));
end;
function capFileSetCaptureFile(hwnd:THandle;
szName
Char):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_SET_CAPTURE_FILE, 0, LPARAM(szName)));
end;
function capFileGetCaptureFile(hwnd:THandle;
szName
Char;
wSize:Word):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_GET_CAPTURE_FILE, wSize, LPARAM(szName)));
end;
function capFileAlloc(hwnd:THandle;
dwSize
Word):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_ALLOCATE, 0, LPARAM(dwSize)));
end;
function capFileSaveAs(hwnd:THandle;
szName
char):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_SAVEAS, 0,LPARAM(szName)));
end;
function capFileSetInfoChunk(hwnd:THandle;
lpInfoChunk
CapInfoChunk):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_FILE_SET_INFOCHUNK, 0, LPARAM(lpInfoChunk)));
end;
function capFileSaveDIB(hwnd:THandle;
szName
char):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
WaveFormatEx;
wSize:Word):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_SET_AUDIOFORMAT, WPARAM(wSize),LPARAM(s)));
end;
function capGetAudioFormat(hwnd:THandle;
s
WaveFormatEx;
wSize:Word)
WORD;
begin
Result :=DWORD( SendMessage(hwnd, WM_CAP_GET_AUDIOFORMAT, WPARAM(wSize),LPARAM(s)));
end;
function capGetAudioFormatSize(hwnd:THandle)
WORD;
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
BitmapInfo;
wSize:Word)
Word;
begin
Result := DWord(SendMessage(hwnd, WM_CAP_GET_VIDEOFORMAT, Wparam(wSize), LPARAM(s)));
end;
function capGetVideoFormatSize(hwnd:THandle)
Word;
begin
Result := DWord(SendMessage(hwnd, WM_CAP_GET_VIDEOFORMAT, 0, 0));
end;
function capSetVideoFormat(hwnd:THandle;
s
BitmapInfo;
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
CapStatus;
wSize:Word):boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_GET_STATUS, WPARAM(wSize),LPARAM(s)));
end;
function capSetScrollPos(hwnd:THandle;
lpP
Point):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
CaptureParms;
wSize:Word):boolean;
begin
Result :=Boolean( SendMessage(hwnd, WM_CAP_GET_SEQUENCE_SETUP, WPARAM(wSize),LPARAM(s)));
end;
function capCaptureSetSetup(hwnd:THandle;
s
CaptureParms;
wSize:Word):boolean;
begin
Result := Boolean (SendMessage(hwnd, WM_CAP_SET_SEQUENCE_SETUP, WParam(wSize),LParam(s)));
end;
function capSetMCIDeviceName(hwnd:THandle;
szName
char):Boolean;
begin
Result :=Boolean( SendMessage(hwnd, WM_CAP_SET_MCI_DEVICE, 0, LParam(szName)));
end;
function capGetMCIDeviceName(hwnd:THandle;
szName
char;
wSize:Word):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_GET_MCI_DEVICE, Wparam(wSize), LPARAM(szName)));
end;
function capPaletteOpen(hwnd:THandle;
szName
Char):Boolean;
begin
Result := Boolean(SendMessage(hwnd, WM_CAP_PAL_OPEN, 0, LParam(szName)));
end;
function capPaletteSave(hwnd:THandle;
szName
Char):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.
//////////////////////////////////////////////////////////////////////////////
//调用
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls,VFW, IdBaseComponent, IdComponent, IdUDPBase,
IdUDPClient,jpeg;
type
TForm1 = class(TForm)
Panel1: TPanel;
Button1: TButton;
Button2: TButton;
IdUDPClient1: TIdUDPClient;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
CapWnd:THandle;
//定义捕获窗句柄
CapParms:TcaptureParms;
//用于设置设备属性的结构变量
BMPINFO:TBitmapInfo;
//BMP图像信息
implementation
{$R *.dfm}
function FrameCallBack(hWnd: HWND;
lpVHdr: PVIDEOHDR): LongInt;stdcall;
var hd:Thandle;
jpg:TJpegImage;
memStream :TMemoryStream;
Bitmap:TBitmap;
begin
//将数据显在Image，
Bitmap:=TBitmap.Create;
Bitmap.Width :=BMPINFO.bmiHeader.biWidth;
// New size of Bitmap
Bitmap.Height:=BMPINFO.bmiHeader.biHeight;
hd:= DrawDibOpen;
DrawDibDraw(hd,Bitmap.canvas.handle,0,0,BMPINFO.BmiHeader.biwidth,BMPINFO.bmiheader.biheight,@BMPINFO.bmiHeader,
lpVHdr^.lpData,0,0,BMPINFO.bmiHeader.biWidth,BMPINFO.bmiHeader.biheight,0);
DrawDibClose(hd);
//发送数据
memStream := TMemoryStream.Create;
jpg := TJpegImage.Create;
jpg.Assign(Bitmap);
jpg.CompressionQuality := 10;
//jpg压缩质量
jpg.JPEGNeeded;
jpg.Compress;
jpg.SaveToStream(memStream);
jpg.Free;
//因为UDP数据包有大小限制，这里如果超出部分，就没有传输，完全可以发几次发出去
Form1.IdUDPClient1.BroadcastEnabled:=true;//用广播功能
if memStream.Size>Form1.IdUDPClient1.BufferSize then
//向192.168.0.X网段广播，端口 9001
Form1.IdUDPClient1.SendBuffer('192.168.0.255',9001,memStream.Memory^,Form1.IdUDPClient1.BufferSize)
else
Form1.IdUDPClient1.SendBuffer('192.168.0.255',9001,memStream.Memory^,memStream.Size);
memStream.Free;
Bitmap.Free;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
CapWnd := capCreateCaptureWindow('我的窗口',
WS_VISIBLE or WS_CHILD,//窗口样式
0, //X坐标
0, //Y坐标
panel1.Width, //窗口宽
panel1.Height, //窗口高
panel1.handle, //窗口句柄
0);
//通常为0
if CapWnd = 0 then
exit;
//定义帧捕捉回调函数
CapSetCallbackOnFrame(CapWnd,FrameCallBack);
CapParms.dwRequestMicroSecPerFrame:=1;
CapParms.fLimitEnabled:=FALSE;
CapParms.fCaptureAudio:=FALSE;
CapParms.fMCIControl:=FALSE;
CapParms.fYield:=TRUE;
CapParms.vKeyAbort:=VK_ESCAPE;
CapParms.fAbortLeftMouse:=False;
CapParms.fAbortRightMouse:=FALSE;
//让设置生效
CapCaptureSetSetup(capWnd,@CapParms,sizeof(TCAPTUREPARMS));
CapPreviewRate(capWnd,33);
//设置预览视频的频率
CapCaptureSequenceNoFile(capWnd);
//如果要捕获视频流，则要使用函数来指定不生成文件，不然会自动生成AVI文件
CapDriverConnect(CapWnd,0);
//连接摄像头设备，第二个参数是个序号，当系统中装有多个显示驱动程序时，其值分别依次为0到总个数如果有多个摄像头，那么就是0->1->2
capGetVideoFormat(capWnd, @BMPINFO,sizeof(TBitmapInfo));
//取得视频图像数据头
CapPreviewScale(capWnd,TRUE);
//是否缩放
CapOverlay(capWnd,true);
//指定是否使用叠加模式，true为使用，否则为false
CapPreview(capWnd,true);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
capCaptureAbort(CapWnd);
//停止捕获
capDriverDisconnect(CapWnd);
//将捕获窗同驱动器断开
end;
end.
