Treat video data stream on Bitec

Yeah I have worked with this design. Actually this design is using the TVP5154 scalers to scale down the standard NTSC input image to fit in four mosaics using the faster SSRAM.

If you have to work with unscaled input images, you need to do away with the scaling.

i2c_write(I2C_BASE, 0xb8>>1, 0x1F, 0x00);// this will disable the scaling.

Later the output is going through the VGA controller of 640x480 resolution to the Chrontel chip as DVI output.

You can stop the channels or configure any of the four input video streams to get unscaled input , do your processing and then have a DVI output on 640x480 or even you can upgrade your VGA to 1024x768 resolution.

You can get the register setting from the TVP5154 user guide.

Rama.