Activity
From 12/26/2019 to 01/24/2020
01/21/2020
- 09:35 PM Revision 970 (repo2): Area based and polyphasic scaler implementations.
- FO 09:30 PM Feature #85: 720p support/1080i support
- A weeks debugging later, this filter actually really works!
01/15/2020
- FO 10:26 PM Feature #85: 720p support/1080i support
- I have a polyphasic version working too, I think. So far I only gave it nearest neighbour coefficients. Rebuilding with Lanczos.
01/05/2020
- FO 11:03 PM Feature #85: 720p support/1080i support
- Forgot to mention 1080i working fine as well as 720p.
I was looking at the 3d modes too, but not sure what to use those for ;-) - FO 11:02 PM Feature #85: 720p support/1080i support
- Plumbed in a 4x4 block of pixels so I can try out polyphasic filters too.
For now its just using a 2x2 block with the area based scale, but got some vertical bug. Stripey!
Using 16KB of block ram now, which is a bit wasteful. 360*4...
12/30/2019
- FO 10:45 PM Feature #85: 720p support/1080i support
- I put in the modelines for 1080i. I need to add interlace support (different vtotal, mid line vsync etc) to the hcnt/vcnt logic. Probably will rewrite it since its not in my style at the moment (_next, _reg, integer based etc).
- FO 09:11 PM Feature #85: 720p support/1080i support
- The scaler is looking very nice now, a few border/locations bugs to fix.
Looking at the plls, need to have: 27MHz, 135MHz, 74.25MHz and 371.25MHz at the same time. This looks to be possible by feeding 54MHz from the USB pll to the HDM...