avicap32.dll

屬於:Windows NT 4.0 avicap32.dll是Windows API應用程式接口相關模組,用於對攝像頭和其它視頻硬體進行AⅥ電影和視頻的截取。

基本介紹

  • 外文名:avicap32.dll
  • DLL 檔案:avicap32 或者 avicap32.dll
  • DLL 名稱:Video For Windows API DLL
檔案信息,參數,

檔案信息

DLL 檔案:avicap32 或者 avicap32.dll
DLL 名稱:Video For Windows API DLL
描述:
屬於:Windows NT 4.0  avicap32.dll是Windows API應用程式接口相關模組,用於對攝像頭和其它視頻硬體進行AⅥ電影和視頻的截取。
系統 DLL檔案:Yes
常見錯誤:File Not Found,Missing File,Exception Errors
安全等級 (0-5): 0
間諜軟體:否
廣告軟體:否
API編程使用方法:
'// Capture Function Declares
Declare Function capCreateCaptureWindow Lib "avicap32.dll" Alias "capCreateCaptureWindowA" _
(ByVal lpszWindowName As String,_
ByVal dwStyle As Long,_
ByVal x As Long,_
ByVal y As Long,_
ByVal nWidth As Long,_
ByVal nHeight As Long,_
ByVal hwndParent As Long,_
ByVal nID As Long) As Long 'returns HWND
Declare Function capGetDriverDescription Lib "avicap32.dll" Alias "capGetDriverDescriptionA" _
(ByVal dwDriverIndex As Long,_
ByVal lpszName As String,_
ByVal cbName As Long,_
ByVal lpszVer As String,_
ByVal cbVer As Long) As Long 'returns C BOOL
Delphi語法聲明:
function capCreateCaptureWindowA(lpszWindowName : PCHAR;
dwStyle : longint;x : integer;y : integer;nWidth : integer;
nHeight : integer;ParentWin : HWND;nId : integer): HWND;
STDCALL EXTERNAL 'AVICAP32.DLL';
Delphi中可以使用如下代碼啟動攝像頭捕捉:
hWndC := capCreateCaptureWindowA('My Own Capture Window',
WS_CHILD or WS_ⅥSIBLE,Panel1.Left,Panel1.Top,Panel1.Width,Panel1.Height,Form1.Handle,0);
if hWndC <> 0 then
begin
SendMessage(hWndC,WM_CAP_SET_CALLBACK_VIDEOSTREAM,0,0);
SendMessage(hWndC,WM_CAP_SET_CALLBACK_ERROR,0,0);
SendMessage(hWndC,WM_CAP_SET_CALLBACK_STATUSA,0,0);
SendMessage(hWndC,WM_CAP_DRIVER_CONNECT,0,0);
SendMessage(hWndC,WM_CAP_SET_SCALE,1,0);
SendMessage(hWndC,WM_CAP_SET_PREVIEWRATE,66,0);
SendMessage(hWndC,WM_CAP_SET_OVERLAY,1,0);
SendMessage(hWndC,WM_CAP_SET_PREVIEW,1,0);
end;

參數

WM_CAP_START= WM_USER=1024;
// start of unicode messages
WM_CAP_UNICODE_START= WM_USER+100; //開始
WM_CAP_GET_CAPSTREAMPTR= (WM_CAP_START+ 1); //獲得 CAPSTR EAMPTR
WM_CAP_SET_CALLBACK_ERROR= (WM_CAP_START+ 2); //設定回調錯誤
WM_CAP_SET_CALLBACK_STATUS= (WM_CAP_START+ 3); //設定回調狀態
WM_CAP_SET_CALLBACK_YIELD= (WM_CAP_START+ 4); //設定回調出產
WM_CAP_SET_CALLBACK_FRAME= (WM_CAP_START+ 5); //設定回調結構
WM_CAP_SET_CALLBACK_ⅥDEOSTREAM= (WM_CAP_START+ 6); //設定回調視頻流
WM_CAP_SET_CALLBACK_WAVESTREAM= (WM_CAP_START+ 7); //設定回調視頻波流
WM_CAP_GET_USER_DATA =(WM_CAP_START+ 8); //獲得使用者數據
WM_CAP_SET_USER_DATA =(WM_CAP_START+ 9) ; //設定使用者數據
WM_CAP_DRⅣER_CONNECT =(WM_CAP_START+ 10); //驅動程式連線
WM_CAP_DRⅣER_DISCONNECT =(WM_CAP_START+ 11); //斷開啟動程式連線
WM_CAP_DRⅣER_GET_NAME =(WM_CAP_START+ 12); //獲得驅動程式名字
WM_CAP_DRⅣER_GET_VERSION =(WM_CAP_START+ 13); //獲得驅動程式版本
WM_CAP_DRⅣER_GET_CAPS =(WM_CAP_START+ 14); //獲得驅動程式性能
WM_CAP_FILE_SET_CAPTURE_FILE =(WM_CAP_START+ 20); //設定捕獲檔案的檔案名稱
WM_CAP_FILE_GET_CAPTURE_FILE =(WM_CAP_START+ 21); //獲得捕獲檔案的檔案名稱
WM_CAP_FILE_SAVEAS =(WM_CAP_START+ 23); //另外儲存檔案為
WM_CAP_FILE_SAVEDIB =(WM_CAP_START+ 25); //保存檔案
// out of order to save on ifdefs
WM_CAP_FILE_ALLOCATE =(WM_CAP_START+ 22); //分派檔案,為捕獲檔案建一個指定大小的檔案
WM_CAP_FILE_SET_INFOCHUNK =(WM_CAP_START+ 24); //設定開始檔案
WM_CAP_EDIT_COPY =(WM_CAP_START+ 30); //編輯複製,把圖象考入剪貼簿
WM_CAP_SET_AUDIOFORMAT =(WM_CAP_START+ 35); //設定音頻格式
WM_CAP_GET_AUDIOFORMAT =(WM_CAP_START+ 36); //捕獲音頻格式
WM_CAP_DLG_ⅥDEOFORMAT =(WM_CAP_START+ 41); //1065 打開視頻格式設定對話框,選擇數字視頻的框架大小和視頻圖像的色深,以及捕獲視頻圖像的壓縮格式。
WM_CAP_DLG_ⅥDEOSOURCE =(WM_CAP_START+ 42); //1066 打開屬性設定對話框,設定對比度、亮度等。(視頻源對話框) 選擇視頻輸入通道和視頻圖像的動態參數。
WM_CAP_DLG_ⅥDEODISPLAY =(WM_CAP_START+ 43); //1067 打開視頻顯示對話框
WM_CAP_GET_ⅥDEOFORMAT =(WM_CAP_START+ 44); //1068 獲得視頻格式
WM_CAP_SET_ⅥDEOFORMAT =(WM_CAP_START+ 45); //1069 設定視頻格式
WM_CAP_DLG_ⅥDEOCOMPRESSION =(WM_CAP_START+ 46); //1070 打開壓縮設定對話框
WM_CAP_SET_PREⅥEW =(WM_CAP_START+ 50); //設定預覽模式
WM_CAP_SET_OVERLAY =(WM_CAP_START+ 51); //設定覆蓋
WM_CAP_SET_PREⅥEWRATE =(WM_CAP_START+ 52); //設定預覽模式下圖像的幀速度
WM_CAP_SET_SCALE =(WM_CAP_START+ 53); //設定預覽視頻的縮放比例
WM_CAP_GET_STATUS =(WM_CAP_START+ 54); //獲得狀態
WM_CAP_SET_SCROLL =(WM_CAP_START+ 55); //設定卷
WM_CAP_GRAB_FRame =(WM_CAP_START+ 60); //逮捕結構
WM_CAP_GRAB_FRame_NOSTOP =(WM_CAP_START+ 61); //停止逮捕結構,截取當前圖象
WM_CAP_SEQUENCE =(WM_CAP_START+ 62); //次序,捕捉到檔案
WM_CAP_SEQUENCE_NOFILE =(WM_CAP_START+ 63); //沒有檔案
WM_CAP_SET_SEQUENCE_SETUP =(WM_CAP_START+ 64); //設定當前捕獲的幀頻率
WM_CAP_GET_SEQUENCE_SETUP =(WM_CAP_START+ 65); //獲得當前捕獲的幀頻率
WM_CAP_SET_MCI_DEⅥCE =(WM_CAP_START+ 66); //設定媒體控制接口
WM_CAP_GET_MCI_DEⅥCE =(WM_CAP_START+ 67); //獲得媒體控制接口
WM_CAP_STOP =(WM_CAP_START+ 68); //停止捕捉
WM_CAP_ABORT =(WM_CAP_START+ 69); //異常中斷
WM_CAP_SINGLE_FRame_OPEN =(WM_CAP_START+ 70); //打開單一的結構
WM_CAP_SINGLE_FRame_CLOSE =(WM_CAP_START+ 71); //關閉單一的結構
WM_CAP_SINGLE_FRame =(WM_CAP_START+ 72); //單一的結構
WM_CAP_PAL_OPEN =(WM_CAP_START+ 80); //打開視頻
WM_CAP_PAL_SAVE =(WM_CAP_START+ 81); //保存視頻
WM_CAP_PAL_PASTE =(WM_CAP_START+ 82); //貼上視頻
WM_CAP_PAL_AUTOCREATE =(WM_CAP_START+ 83); //自動創造
WM_CAP_PAL_MANUALCREATE =(WM_CAP_START+ 84); //手動創造
// Following added post VFW 1.1
WM_CAP_SET_CALLBACK_CAPCONTROL =(WM_CAP_START+ 85); // 設定收回的錯誤
WM_CAP_END =WM_CAP_SET_CALLBACK_CAPCONTROL;

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