Regarding a problem that high-resolution images cannot be output to HDMI
I wrote an IP core in vivado HLS. In this IP core, I defined a pointer using the m_axi port. This pointer points to an image pixel array cached in DDR. I will use this pointer to transmit the pixel information to IP core and form data flow.(Note: I stipulate that the output video stream is 800*600 resolution in HLS. Except for valid pixel information, the other positions are filled with 0 to ensure that the timing matches the VTC module.) Finally, it is output through the axis port, and the output data stream is output and displayed in HDMI through the "axi-stream to video out" module. C simulation and synthesis of this IP core are completely correct, but there is such a problem in specific use:
If the array cached in DDR is relatively small (ie low resolution), such as 300*400, then HDMI can be driven and displayed normally; but if the array is relatively large (ie high resolution), such as 600*800, then HDMI cannot be driven. Through the test of the relevant flag bit, it can be known that whether it is a low-resolution or high-resolution image, the data in the pixel array in the DDR can be completely transmitted to the IP core, but why the high-resolution image cannot be output to HDMI? ?
This problem has troubled me for a long time. Thank you!