I am using adv7441a for capturing standard video such as 720p/1080p from YPbPr port and to encode, and when i want to set the digital color control like contrast,saturation,brightness and hue dynamically, with following registers operation(in USER MAP 1):
1. Enable Color Controls bit0 of 0x9E: 0x9E = 1;
2.Contrast 0x9A[7:0] = 0x40;
3.Saturation 0x9B[7:0] = 0x40;
4.BRIGHTNESS 0x9C[7:0] = 0x40;
5.HUE 0x9D[7:0] = 0x40;
I am sure the registers is set to the value as indicated, but no color changed at all from the real H.264 video.
Is there any thing wrong with those operations?
Thank you very much.