unified buttons for <ALT> mode

waterwingz

12140

Re: unified buttons for <ALT> mode

« Reply #20 on: 07 / July / 2012, 13:55:29 »

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Maybe its time to bump this one.

I took a look at it again as I worked through the ixus115 port - it uses an horrible combination of DISP plus ZOOM-IN to activate <ALT> mode.

Quote from: msl on 26 / August / 2011, 10:31:14

Short press toggle <ALT> mode, long press normal play mode. Works fine for me as option for alternate ALT button.

@msl : when I look through the various platform/camera/kbd.c files, it looks like this is only implemented for the ixus120, ixus220, and ixus230? There is code in there in to use a "altDownTimer" to differentiate between short and long presses of the <ALT> key. Or do you know if this done a different way on other cameras ?

« Last Edit: 07 / July / 2012, 14:23:51 by waterwingz »

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Ported : A1200 SD940 G10 Powershot N G16

msl

1280
A720 IS, SX220 HS 1.01a

Re: unified buttons for <ALT> mode

« Reply #21 on: 07 / July / 2012, 14:35:05 »

Quote from: waterwingz on 07 / July / 2012, 13:55:29

Or do you know if this done a different way on other cameras ?

I fear there I may not to help. I can only speak for my two cameras. And they have no extra code. Both cameras have the double function (short and long press) for the Alt key.

msl

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CHDK-DE: CHDK-DE links

waterwingz

12140

Re: unified buttons for <ALT> mode

« Reply #22 on: 07 / July / 2012, 16:01:33 »

Quote from: msl on 07 / July / 2012, 14:35:05

I fear there I may not to help. I can only speak for my two cameras. And they have no extra code. Both cameras have the double function (short and long press) for the Alt key.

I found it (again). Its in the kbd_process() routine in trunk/core/kbd.c.

Code: [Select]

        if ( key_pressed  && !usb_remote_active )
        {
        if (kbd_is_key_pressed(conf.alt_mode_button)
                || ((key_pressed >= CAM_EMUL_KEYPRESS_DELAY)
                && (key_pressed < CAM_EMUL_KEYPRESS_DELAY+CAM_EMUL_KEYPRESS_DURATION))) {
            if (key_pressed <= CAM_EMUL_KEYPRESS_DELAY+CAM_EMUL_KEYPRESS_DURATION)
                key_pressed++;
            if (key_pressed == CAM_EMUL_KEYPRESS_DELAY)
                kbd_key_press(conf.alt_mode_button);
            else if (key_pressed == +CAM_EMUL_KEYPRESS_DELAY+CAM_EMUL_KEYPRESS_DURATION)
                kbd_key_release(conf.alt_mode_button);
            return 1;
        } else if (kbd_get_pressed_key() == 0) {
            if (key_pressed != 100 && (key_pressed < CAM_EMUL_KEYPRESS_DELAY)) {
                kbd_blocked = 1-kbd_blocked;
                if (kbd_blocked)
                    gui_kbd_enter();
                else
                    gui_kbd_leave();
            }
            key_pressed = 0;
            return 1;
        }
        return 1;
    }

Now I just have to figure out if the extra timer code in the ixus120, ixus220 and ixus230 ports is redundant or does something different.

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Ported : A1200 SD940 G10 Powershot N G16

waterwingz

12140

Re: unified buttons for <ALT> mode

« Reply #23 on: 08 / July / 2012, 12:09:23 »

Perhaps I'm flogging a dead horse here but it seems our grand idea of using the Playback button for a unified <ALT> button is not working out.

I took a look at core/kbd.c. Only a few cameras offer PLAYBACK as a configurable <ALT> option.

sx150is
sx220hs
sx230hs
s100
ixus230_elph310hs
ixus230_elph310hs

I don't have a quick way of figuring out which cams actually make Playback the <ALT> key but do not offer configurable <ALT> selection.

~~So I tried to enable it on my ixus120 and the new ixus115 port. This behaves as follows :~~
.. redacted..
The special timer code I mentioned in a previous post seems to have no effect. And on my G10, selecting Playback (once I enable that option in the code) did not work - you could no longer enter <ALT> in any camera playback or shooting mode.

tl;dr>How well does using the playback button to start <ALT> work on those cameras that are set up that way ?

Update : see posting farther down - pebkac as usual.

« Last Edit: 08 / July / 2012, 17:20:35 by waterwingz »

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Ported : A1200 SD940 G10 Powershot N G16

reyalp

14118

Re: unified buttons for <ALT> mode

« Reply #24 on: 08 / July / 2012, 15:02:43 »

Quote from: waterwingz on 08 / July / 2012, 12:09:23

So I tried to enable it on my ixus120 and the new ixus115 port. This behaves as follows :
If you start the camera in playback mode and press the playback button again, the camera shuts down.
If you start the camera in shooting mode (or go to shooting mode after starting in playback) and then press the playback button, you go into <ALT> mode.
If you start the camera in shooting mode (or go to shooting mode after starting in playback), go back to playback mode with a long press and then press the playback button, you go into <ALT> mode.
The first option is bad, the other two are okay. I think reyalp predicted this sort of behaviour here.

If the code is implemented correctly, any of the canon actions should only happen on a long press. Then what you describe is normal canon behavior for this button. If a short press triggers any canon action when play is selected as the alt button, then it's not implemented correctly.

edit:
The sx150 worked fine with play as the alt button.

edit 2:
As I mentioned earlier on IRC, some canon buttons already have a long/short press behavior (notably the print button on the cameras where canon lets you assign other functions), so assigning alt to those can cause problems. I don't think that ever applies to play though.

« Last Edit: 08 / July / 2012, 15:05:52 by reyalp »

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Don't forget what the H stands for.

waterwingz

12140

Re: unified buttons for <ALT> mode

« Reply #25 on: 08 / July / 2012, 15:56:23 »

Missed adding the new buttons to KEY_MASK2.

« Last Edit: 08 / July / 2012, 16:19:27 by waterwingz »

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Ported : A1200 SD940 G10 Powershot N G16