Ejemplo n.º 1
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 public static extern int SendMessageW([In] IntPtr hWnd, int Msg, uint wParam, ref CAPTUREPARMS waveFormat);
Ejemplo n.º 2
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        /// <summary>
        /// We can configure some settings related to capturing images from
        /// the camera.  Primarily we want to control how many buffers are 
        /// used in the capture process.
        /// 
        /// If we are doing continuous capture, we can configure
        /// the interval between subsequent frames.
        /// </summary>
        public override void ConfigureCapture()
        {
            fCaptureParams = new CAPTUREPARMS();
            
            capCaptureGetSetup(ref fCaptureParams);

            // These are the core parameters that must be 
            // set when we're capturing video

            fCaptureParams.dwRequestMicroSecPerFrame = (uint)CaptureInterval;   // Start with 15 frames per second
            fCaptureParams.wPercentDropForError = 10;               // Percentage of frames that can drop before error is signaled
            fCaptureParams.fYield = true;                          // If set to true, a thread will be spawned            
            fCaptureParams.wNumVideoRequested = 2;                  // Maximum number of video buffers to allocate
            
            // Related to capturing audio
            fCaptureParams.fCaptureAudio = false;
            fCaptureParams.wNumAudioRequested = 0;
            fCaptureParams.dwAudioBufferSize = 0;

            fCaptureParams.fLimitEnabled = false;
            fCaptureParams.wTimeLimit = 0;

            fCaptureParams.fDisableWriteCache=false;
            fCaptureParams.AVStreamMaster=0;

            // Used when capturing to a file
            fCaptureParams.dwIndexSize = 0;             // Determines the limit of audio/video buffers that can be captured
            fCaptureParams.wChunkGranularity = 0;

            // Related to MCI
            fCaptureParams.fMCIControl = false;
            fCaptureParams.fStepMCIDevice = false;
            fCaptureParams.dwMCIStartTime = 0;
            fCaptureParams.dwMCIStopTime = 0;
            fCaptureParams.fStepCaptureAt2x = false;
            fCaptureParams.wStepCaptureAverageFrames = 5;

            
            // These are related to mouse and keyboard control of capturing
            // Since we want total control of the capture process
            // we don't want these used at all.
            fCaptureParams.vKeyAbort = 0;
            fCaptureParams.fAbortLeftMouse = false;
            fCaptureParams.fAbortRightMouse = false;
            fCaptureParams.fMakeUserHitOKToCapture = false;

            fCaptureParams.fUsingDOSMemory = false;

            
            // Configure the actual capture settings
            capCaptureSetSetup(ref fCaptureParams);


        }
Ejemplo n.º 3
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 protected bool capCaptureSetSetup(ref CAPTUREPARMS s)
 {
     uint wSize = (uint)Marshal.SizeOf(s);
     return 1 == SendMessageW(fWindowHandle, Vfw.WM_CAP_SET_SEQUENCE_SETUP, wSize, ref s);
 }