SX50 HS porting thread - page 23 - DryOS Development - CHDK Forum
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SX50 HS porting thread

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Offline yukia10

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Re: SX50 HS porting thread
« Reply #220 on: 31 / March / 2013, 16:50:54 »
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Thanks, reyalp.

Quote from: reyalp on 31 / March / 2013, 13:37:04
Just FYI, to get correct colors in the UI overlay (=bitmap), you will need to use the latest svn version of chdkptp.
I will prepare the build environment for chdkptp sometime in the future.

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You might want to compare the viewport* function code with sx40, that should be similar to sx50 and a fairly correct/complete implementation.
I think the initial code is from sx40 but the code from sx260 seems to work well.

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If the camera supports different aspect ratios, you should check each one.
It was OK except the aspect ratio of 5:4.
« Last Edit: 01 / April / 2013, 09:08:28 by yukia10 »
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Offline philmoz

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Re: SX50 HS porting thread
« Reply #221 on: 31 / March / 2013, 18:45:31 »
Quote from: yukia10 on 31 / March / 2013, 03:56:33
Quote from: yukia10 on 30 / March / 2013, 00:11:01
I only have an upper half of Viewfinder with chdkptp-r311.
I could get a whole Viewfinder with chdkptp-r311 using the following code in lib.c (same as SX260HS):

Code: [Select]
int vid_get_viewport_display_xoffset_proper()   { return vid_get_viewport_display_xoffset() * 2; }
int vid_get_viewport_display_yoffset_proper()   { return vid_get_viewport_display_yoffset() * 2; }
int vid_get_viewport_width_proper()             { return vid_get_viewport_width() * 2; }
int vid_get_viewport_height_proper()            { return vid_get_viewport_height() * 2; }
int vid_get_viewport_fullscreen_height()        { return 480; }
I feel this is somewhat inconsistent with setting viewport_yscale to 1, but it seems OK so far.

Based on the specs the yscale value should be 2 and the above settings should be used - the original port values look to have been copied from a mix of places and is basically wrong.

The G1X is probably the closest port to the SX50 for this stuff - it also includes all the same aspect ratio modes including 5:4.

CHDK works with virtual viewport & bitmap dimenstions of 360 x 240 (480 x 240 for cameras with widescreen LCD).

The viewport & bitmap width, height, xoffset and yoffset functions work in this space.

The yscale and _proper versions of the functions are used to convert to the actual physical dimensions of the viewport and bitmap.

Phil.
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CHDK ports:
  sx30is (1.00c, 1.00h, 1.00l, 1.00n & 1.00p)
  g12 (1.00c, 1.00e, 1.00f & 1.00g)
  sx130is (1.01d & 1.01f)
  ixus310hs (1.00a & 1.01a)
  sx40hs (1.00d, 1.00g & 1.00i)
  g1x (1.00e, 1.00f & 1.00g)
  g5x (1.00c, 1.01a, 1.01b)
  g7x2 (1.01a, 1.01b, 1.10b)
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Offline yukia10

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Re: SX50 HS porting thread
« Reply #222 on: 01 / April / 2013, 09:30:46 »
Thanks, Phil.

Quote from: philmoz on 31 / March / 2013, 18:45:31
The G1X is probably the closest port to the SX50 for this stuff - it also includes all the same aspect ratio modes including 5:4.

The lib.c based on G1X works fine without a flashing histogram (yscale is 2).
All aspect ratios are OK on chdkptp.
Could anyone test an attached lib.c on firmware 1.00b?
« Last Edit: 01 / April / 2013, 09:45:35 by yukia10 »
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Offline lapser

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Re: SX50 HS porting thread
« Reply #223 on: 01 / April / 2013, 11:30:39 »
Quote from: yukia10 on 01 / April / 2013, 09:30:46
Could anyone test an attached lib.c on firmware 1.00b?
Histogram is normal now, and PTP live view works correctly. Looks like this one is fixed. Many thanks.
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EOS-M3_120f / SX50_100b / SX260_101a / G1X_100g / D20_100b
https://www.youtube.com/user/DrLapser/videos
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Offline dvip

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Re: SX50 HS porting thread
« Reply #224 on: 01 / April / 2013, 13:36:30 »
@Phil, is this G1X code also needed for SX40HS' histogram?
I wonder if there are some G1X/SX50HS updates that apply to the SX40HS.

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Offline philmoz

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Re: SX50 HS porting thread
« Reply #225 on: 01 / April / 2013, 14:54:29 »
Quote from: dvip on 01 / April / 2013, 13:36:30
@Phil, is this G1X code also needed for SX40HS' histogram?
I wonder if there are some G1X/SX50HS updates that apply to the SX40HS.



Not that I am aware of.

Phil.
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CHDK ports:
  sx30is (1.00c, 1.00h, 1.00l, 1.00n & 1.00p)
  g12 (1.00c, 1.00e, 1.00f & 1.00g)
  sx130is (1.01d & 1.01f)
  ixus310hs (1.00a & 1.01a)
  sx40hs (1.00d, 1.00g & 1.00i)
  g1x (1.00e, 1.00f & 1.00g)
  g5x (1.00c, 1.01a, 1.01b)
  g7x2 (1.01a, 1.01b, 1.10b)
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Offline waterwingz

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Re: SX50 HS porting thread
« Reply #226 on: 01 / April / 2013, 18:51:33 »
Updated the latest beta versions to include yukia10 's recent changes. 

Latest custom builds (v3) here >

link > sx50hs firmware 1.00B

link > sx50hs firmware 1.00C

Note : SD Card Lock Method only for booting.
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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline Hmm

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Re: SX50 HS porting thread
« Reply #227 on: 03 / April / 2013, 02:13:51 »
Wow! I am so impressed with all the work you all are doing!!! Keep up the fantastic work, it's all appreciated.

Just a quick question, and I apologize for threadcrapping. Once the official version will be released, will there be a readme file or some other file that shows what the additions or improvements are?  I took a quick peak on the SX40 and I couldnt find an FAQ or readme file for the features for that build.
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Offline lapser

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Re: SX50 HS porting thread
« Reply #228 on: 03 / April / 2013, 02:41:07 »
Quote from: Hmm on 03 / April / 2013, 02:13:51
Once the official version will be released, will there be a readme file or some other file that shows what the additions or improvements are?
https://trac.assembla.com/chdk/timeline
This link shows the various patches that have been applied to CHDK in general. Most of the work of porting a new camera is trying to get existing CHDK features to work, not really adding new features.

I guess the question is what else needs to be done or tested on the SX50?

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EOS-M3_120f / SX50_100b / SX260_101a / G1X_100g / D20_100b
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Offline Hmm

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Re: SX50 HS porting thread
« Reply #229 on: 03 / April / 2013, 21:28:05 »
Thanks Lapster for setting me straight. I guess my thinking is that any feature not currently included in the stock SX50 firmware is a new feature, lol.

I wait anxiously for the final result. For me, one big feature of the CHDK is extending the longer shutter speeds to 64 seconds.
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