The Mat2AXI video function receives an xf::cv::Mat representation of a
sequence of images and encodes it correctly using the AXI4 Streaming
video protocol.
API Syntax
template<int W, int T, int ROWS, int COLS,int NPC,int XFCVDEPTH = _XFCVDEPTH_DEFAULT>
int xfMat2AXIvideo(xf::cv::Mat<T,ROWS, COLS,NPC, XFCVDEPTH>& img,hls::stream<ap_axiu<W,1,1,1> >& AXI_video_strm)
Parameter Descriptions
The following table describes the template and the function parameters.
| Parameter | Description |
|---|---|
| W | Data width of AXI4-Stream. Recommended value is pixel depth. |
| T | Pixel type of the image. 1 channel (XF_8UC1). Data width of pixel must be no greater than W. |
| ROWS | Maximum height of input image. |
| COLS | Maximum width of input image. |
| NPC | Number of pixels to be processed per cycle. Possible options are XF_NPPC1 and XF_NPPC8 for 1-pixel and 8-pixel operations respectively. |
| XFCVDEPTH | Depth of the Output image. |
| AXI_video_strm | HLS stream of ap_axiu (axi protocol) type. |
| img | Output image. |
This function returns the value 0.
Note
The NPC values across all the functions in a data flow must follow the same value. If there is mismatch it throws a compilation error in HLS.