New Q7 XT-Q7-V11 Board firmware

[aberenguel]

While you are here... Color mode. Is this device configured to ouput RGB (limited or full) or YCbCr? Because, in my case, shadow detail is lost with visible "dithering".

That resembles with this:

https://www.avforums.com/threads/hdmi-output-rgb-vs-ycbcr.1037514/

"HDMI YCbCr Video levels and correct for majority of displays.
RGB (PC levels) can cause richer colours (higher contrast) but probably also lead to black crush,where you lose shadow detail. (dark areas to black)"

I know my tv works better with YCbCr and this looks quite bad in comparison.

Where do you change this configuration?

In the kernel there is this option in the "RK1000 TV Encoder support" section, but it is related to TV output, not the HDMI.

[cortez]

Where do you change this configuration?

In the kernel there is this option in the "RK1000 TV Encoder support" section, but it is related to TV output, not the HDMI.

I'm not sure, just checking datasheet:

http://www.dfrobot.com/image/data/DFR0307/Rockchip_RK3188_Specifiation_Detail_V1.2.pdf

Ouput data format:
YCbCr 4:2:0 semi-planar
YCbYCr 4:2:2
YCrYCb 4:2:2
CbYCrY 4:2:2
CrYCbY 4:2:2
Fully configurable ARGB channel lengths and locations inside 32bits,
such as ARGB8888,RGB565,ARGB4444 etc.

I need to get my hands on this, I've never done any kernel work on stuff like this. Only some exynos4 and snapdragon s3 for phones.

EDIT: Having ITE 66121 as external HDMI transmitter surely doesn't help with configuration. Its source can be found in \drivers\video\rockchip\hdmi\chips\cat66121

EDIT2: I think I understand now. RK3188 is outputting in limited ycbcr 4:2:2 color format which causes loss in shadow areas and contrast issues. If it was outputting in 4:4:4 that wouldn't be an issue.

[draxd]

Excellent job, is real 1080p doable? Not this fake ui size build.prop hack.

BTW, I've downloaded update_q7_ruitai_20150317.zip from that baidu folder and it works fine on my V11.

Here is Mega link for it:
https://mega.co.nz/#!2sBjjIjC!WSQhF2...AVjzG9DTLPpvmo

Tried this, works good on my V11 with spmc.

Update : It works ok but after few restarts google play starts acting strange. reporting that I'm not logged in. I will try to revert to original rom.

[aberenguel]

I'm not sure, just checking datasheet:

http://www.dfrobot.com/image/data/DFR0307/Rockchip_RK3188_Specifiation_Detail_V1.2.pdf

Ouput data format:
YCbCr 4:2:0 semi-planar
YCbYCr 4:2:2
YCrYCb 4:2:2
CbYCrY 4:2:2
CrYCbY 4:2:2
Fully configurable ARGB channel lengths and locations inside 32bits,
such as ARGB8888,RGB565,ARGB4444 etc.

I need to get my hands on this, I've never done any kernel work on stuff like this. Only some exynos4 and snapdragon s3 for phones.

EDIT: Having ITE 66121 as external HDMI transmitter surely doesn't help with configuration. Its source can be found in \drivers\video\rockchip\hdmi\chips\cat66121

EDIT2: I think I understand now. RK3188 is outputting in limited ycbcr 4:2:2 color format which causes loss in shadow areas and contrast issues. If it was outputting in 4:4:4 that wouldn't be an issue.

Take a look at https://github.com/aberenguel/D33_KK...66121/config.h

The flag is defined as #defineINPUT_COLOR_MODE F_MODE_RGB444

What kernel source are talking about?

[cortez]

Take a look at https://github.com/aberenguel/D33_KK...66121/config.h

The flag is defined as #defineINPUT_COLOR_MODE F_MODE_RGB444

What kernel source are talking about?

Nevermind, I got it wrong. So it takes RGB444 from input and outputs YUV444. Strange, YUV is generally used with component connections. No lines regarding ycbcr unfortunately.


So default output is this:
//#define OUTPUT_COLOR_MODE F_MODE_YUV422
#define OUTPUT_COLOR_MODE F_MODE_YUV444
//#define OUTPUT_COLOR_MODE F_MODE_RGB444

Can you compile it like this:
//#define OUTPUT_COLOR_MODE F_MODE_YUV422
//#define OUTPUT_COLOR_MODE F_MODE_YUV444
#define OUTPUT_COLOR_MODE F_MODE_RGB444

So we can try to see difference.

[aberenguel]

Nevermind, I got it wrong. So it takes RGB444 from input and outputs YUV444. Strange, YUV is generally used with component connections. No lines regarding ycbcr unfortunately.


So default output is this:
//#define OUTPUT_COLOR_MODE F_MODE_YUV422
#define OUTPUT_COLOR_MODE F_MODE_YUV444
//#define OUTPUT_COLOR_MODE F_MODE_RGB444

Can you compile it like this:
//#define OUTPUT_COLOR_MODE F_MODE_YUV422
//#define OUTPUT_COLOR_MODE F_MODE_YUV444
#define OUTPUT_COLOR_MODE F_MODE_RGB444

So we can try to see difference.

I enabled the flag CONFIG_RK_HDMI_DEBUG so that you can see the interesting things doing:
$ dmesg | grep IT66121

So I compiled two kernels for OUTPUT_COLOR_MODE: F_MODE_RGB444 and F_MODE_YUV444

https://www.dropbox.com/s/cv52bw0ht1hzp5a/kernel_xt_q7_v11_3188T_cpu1248_gpu600_ddr720_output_colors.zip?dl=0

[cortez]

I gave it a quick try now:

Colors seem more natural with RGB444 settings, it's not that much saturated.

However, it's still too much dark with no details in shadows. I tried to compensate with TV's gamma and brightness settings but nothing was possible to gain - only visible "dithering" if you understand me.

I played opening scene of movie "The Fountain" which is excellent for testing this stuff. Overall very dark, a lot of details in shadows.

- TV media player: all visible clearly, fine details in shadows
- PC: same
- Q7 both streaming and USB storage (for trying if streaming is reducing bitrate), 3 video playing programs: all as written above - dark, no shadow details and cannot compensate with TV settings.

So unfortunately it's not linked with output color settings.

[Mamay]

xt-q7-v11 1080p update_Q7_20150425 It really works, Root get away http://www.kingoapp.com/ from a PC

http://pan.baidu.com/s/1c0m4SW4

https://yadi.sk/d/LJc2zOGegwAwt
https://cloud.mail.ru/public/JoRS/rsRrDxzST

[asadmari]

aberenguel "The BOX_FB_1080P is selected for "LCD Panel Select", but I still have to have the build.prop hack. If I don't have, the resolution become very less than 720p, so that I was not able to change the resolution via Android Configurations.

Anyway, I guarantee it is real 1080p"



Can you please upload the modified kernel with working 1080p, wifi and bluetooth for our xt-q7-v11 please ? The link does not seem to work anymore or cortez if you have a copy of the modified D33 kernel, please upload or send a link thanks guys. How did you guys root it, I was gona

[deputylynch]

Am I the only one having this problem still in passing the audio. I am now on the xt-q7-v11 1080p update_Q7_20150425 and still have problems with the audio cutting out and sounding like it is slow motion??

Help!!

[deputylynch]

Help remove?

[davidywise]

You got good advice but i the rooting you mention can i use search4roots rooting tool instead of that one.

[davidywise]

Can i root this with search4roots rooting tool??

[nexxusty]

Latest firmware: http://chinagadgetsreviews.blogspot....itkat-for.html