示例#1
0
        public bool CaptureOneFrameAsync()
        {
            int fieldNumber = -1;
            var errorCode   = OfficalApi.GetSnappingNumber(_cardHandle, ref fieldNumber);

            if (errorCode != ErrorCode.CG_OK)
            {
                return(false);
                //throw gcnew InvalidOperationException("采集卡采集图像失败");
            }

            if (fieldNumber < 0)
            {
                return(false);
            }

            int frameNumber = fieldNumber / 2 - 1;

            if (frameNumber == -1)
            {
                frameNumber = AsyncFramesCount - 1;
            }

            //Trace.WriteLine(DateTime.Now.ToString("yyyy年MM月dd日 HH:mm:ss:fff") + "     " + frameNumber);

            errorCode = OfficalApi.StaticMemLock(frameNumber * FrameBufferSize,
                                                 FrameBufferSize,
                                                 ref _staticMemoryHandle,
                                                 ref _staticMemoryPointer);

            if (errorCode != ErrorCode.CG_OK)
            {
                return(false);
                //throw gcnew InvalidOperationException("采集卡锁定图像失败");
            }

            //传输到缓冲区
            var sourcePtr = (byte *)_staticMemoryPointer.ToPointer();
            var targetPtr = (byte *)CaptureFrameBuffer.ToPointer();

            for (int i = 0; i < FrameBufferSize; i++)
            {
                *targetPtr++ = *sourcePtr++;
            }

            errorCode = OfficalApi.StaticMemUnlock(_staticMemoryHandle);
            if (errorCode != ErrorCode.CG_OK)
            {
                return(false);
                //throw gcnew InvalidOperationException("采集卡解锁图像失败");
            }

            return(true);
        }
示例#2
0
        /// <summary>
        /// 采集一帧
        /// </summary>
        public bool CaptureOneFrameSync()
        {
            //采集图像
            ErrorCode errorCode = OfficalApi.CaptureSync(_cardHandle, 0, 0, true, 1);

            if (errorCode != ErrorCode.CG_OK)
            {
                return(false);
                //throw gcnew InvalidOperationException("采集卡采集图像失败");
            }

            errorCode = OfficalApi.StaticMemLock(0,
                                                 FrameBufferSize,
                                                 ref _staticMemoryHandle,
                                                 ref _staticMemoryPointer);

            if (errorCode != ErrorCode.CG_OK)
            {
                return(false);
                //throw gcnew InvalidOperationException("采集卡锁定图像失败");
            }

            //传输到缓冲区
            var sourcePtr = (byte *)_staticMemoryPointer.ToPointer();
            var targetPtr = (byte *)CaptureFrameBuffer.ToPointer();

            for (int i = 0; i < FrameBufferSize; i++)
            {
                *targetPtr++ = *sourcePtr++;
            }

            errorCode = OfficalApi.StaticMemUnlock(_staticMemoryHandle);
            if (errorCode != ErrorCode.CG_OK)
            {
                return(false);
                //throw gcnew InvalidOperationException("采集卡解锁图像失败");
            }

            return(true);
        }