[argyllcms] Re: dispread issues, in an android tablet chroot
- From: Dan Wilcox <dmwilcox@xxxxxxxxx>
- To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
- Date: Sat, 1 Sep 2012 20:48:28 -0700
OK so after some fussing with gdb last night I tracked it down to /377 aka
255 is provided when a file pointer finished in at least this arm
environment. So in read_line in pars.c I changed the condition with the
getch call to check for 255 or -1, as a nasty workaround.
Now I can run dispread and generate a ti3 file but when I use colprof on
it, I get some very large error margins. I have turned off the dpms stuff
the screen would normally do, so it sits at full brightness for the entire
patch reading but I'm getting about 14 average error. It is only a medium
quality shaper/matrix so maybe this is expected?
I'll try a larger profile a little later and pull the quality option to
high. Open to any suggestions, thanks,
Daniel
attaching the ti3 and icc files in case those are of use--the ti1 file is
the same as the small one attached earlier in the thread.
$ ./profile/colprof -v -D"Asus_TFP_brightness100" -qm -as ../target-chart
No of test patches = 200
Creating matrix and curves...
100%
Matrix = 0.374944 0.390730 0.222416
0.275879 0.756404 0.177861
0.067692 0.111364 1.087608
Input offset = -0.063462 -0.132334 -0.012725
Output offset = 0.016798 0.009681 0.011877
0 gamma = 1.970926 1.574419 1.825426
1 harmonics = 0.217738 -0.089309 -0.001754
2 harmonics = 0.608253 0.440239 0.479731
3 harmonics = -0.367972 -0.179178 -0.101397
4 harmonics = -0.404985 0.238357 0.286778
5 harmonics = -0.187394 0.059169 0.255883
6 harmonics = 0.120847 -0.006599 0.025147
7 harmonics = 0.116213 -0.115215 0.220402
Find white & black points
Initial white point = 0.988090 1.210143 1.266664
Initial black point = 0.007598 0.004849 0.013465
Display Luminance = 360.878709
White point XYZ = 0.816507 1.000000 1.046706
Black point XYZ = 0.006279 0.004007 0.011127
Fixup matrix for white point
After white point adjust:
Matrix = 0.376314 0.421662 0.166224
0.247581 0.617980 0.134438
0.043507 0.074426 0.706967
Done gamma/shaper and matrix creation
Profile done
Profile check complete, peak err = 134.917420, avg err = 14.340426, RMS =
21.571368
On Wednesday, August 29, 2012, Dan Wilcox <dmwilcox@xxxxxxxxx> wrote:
> Thanks Graeme, I'll take a look at using the web option.
>
> Daniel
>
> On Tuesday, August 28, 2012, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
>> Dan Wilcox wrote:
>>
>>> I noticed in the mailing list archives some Android profiling has come
up
>>> before, my attempt is slightly different as I'm using the tablet to
profile
>>> itself by way of a Debian chroot. As a result of the limitation of not
>>> having either VideoLUT access or a native windowing display system (I'm
>>> using VNC to provide Debian with an X environment) the attempt is here
to
>>
>> Hi,
>> note that another alternative is to use a web browser.
>> See <http://www.argyllcms.com/doc/dispread.html#dweb>.
>>
>>> OK, now to sweat and tears, I have generated a target file with targen,
>>> poured over documentation, tried a few different environments only to
come
>>> back to find that when dispread tries to load up the target patch file
it
>>> goes into an infinite loop, on the tablet--x86 laptop is fine of course.
>>
>>> read(16, "CTI1 \n\nDESCRIPTOR \"Argyll Cali"..., 4096) = 4096
>>> read(16, "7.642 39.734 73.389 18.751 \n79 7"..., 4096) = 4096
>>> read(16, "166 86.118 44.061 13.217 36.160 "..., 4096) = 3089
>>> read(16, "", 4096) = 0
>>> read(16, "", 4096) = 0
>>> read(16, "", 4096) = 0
>>> read(16, "", 4096) = 0
>>
>> Please send the .ti1 file in question (debugging by remote control
>> is not the most efficient method...)
>>
>> Cheers,
>>
>> Graeme Gill.
>>
>>
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