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hyperion-project / hyperion.ng

The successor to Hyperion aka Hyperion Next Generation
https://hyperion-project.org/
MIT License
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HDR Feature #497

Open Iridahonda opened 6 years ago

Iridahonda commented 6 years ago

This is more of a feature request:

When watching HDR video the Hyperion colours are washed out due to not be able to handle BT 2100 video properly in the grabber. I have yet to find a V4L2 HDR grabber. One potential solution could be to add a remote control on/off button that when on increases the colour vibrance (by a settable amount) so HDR video can be displayed with colours that match the TV more closely. Better still use the 3dlut for 2100 to 706 the same as Kodi.

Edit: I made a test. The following works.

case PIXELFORMAT_UYVY: { int index = lineLength ySource + xSource 2; uint8_t y = data[index+1]; uint8_t u = ((xSource&1) == 0) ? data[index ] : data[index-2]; uint8_t v = ((xSource&1) == 0) ? data[index+2] : data[index ]; u = ((u - 128) 2) + 128; //Scale factor of 2 to increase vibrance of U and V v = ((v - 128) 2) + 128;
yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);

salondigital commented 6 years ago

Hi!

What file I need to edit for this? V4L2Grabber.cpp?

Thanks!

penfold42 commented 6 years ago

What pixel formats does your grabber support ? Would it be easier to do this via v4l control settings ?

Iridahonda commented 6 years ago

Hi

I am thinking this is what I need:

https://hyperion-project.org/threads/color-correction-add-3d-lut-correction.2594/

I see lildadou has made a start with a port to Hyperion.

Br

/T