[Ardour-Dev] Tranzport Kernel Driver for linux install questions

David Taht d at teklibre.com
Sun Mar 8 10:33:07 PDT 2009

Hash: SHA1

Giso Grimm escribió:
> A few more questions/comments:
> - Is it possible to leave the "slave mode" of the scroll wheel?

Not at present. Adding that ability (independent mode) is high on my list.

> - If "No Grid" + "CD frames" is selected, then scroll moves only one
> sample. If I switch to "magnetic" and "CD frames" scroll moves a CD
> frame. Switching snap to "seconds" works independently from the snap
> mode, i.e., even with "no grid".

I found that confusing in ardour too and have to special case the CD
frames code, I didn't realize that the difference existed until I tried
to move around at 96k...

> - How to set the loop-end marker and punch-out marker?

hold down SHIFT-LOOP-ADD  - in precisely that sequence.
or SHIFT-PUNCH-ADD for punch.

It is a little finicky.

> - Is it possible to configure the time display to show minutes/seconds
> (or best any possible time representation) instead of bars/beats?

Another useful feature for slave mode would be to follow the settings of
the primary clock.

SMPTE is in the code just not enabled (no way to switch it)

Another useful feature would be to have the gui control these
configuration options on the tranzport independently but alas last I
looked (a year ago) the interface back into the gui couldn't do that.

Recharging my batteries this morning... plan another major hacking run

> This is all for now...
> Giso
> David Taht wrote:
>>> Is a description of the key mapping available?
>> I should sit down and do that, or (preferably) recruit someone to update
>> the documentation.
>> The best place to get that information right now is in button_events.cc.
>> The code is often quite straightforward, for example:
>> void
>> TranzportControlProtocol::button_event_next_press (bool shifted)
>> {
>> 	if (shifted) {
>> 		next_wheel_mode ();
>> 	} else {
>> 		next_marker_any ();
>> 	}
>> }
>> Keep doing those git pulls, I have been making changes all the way up to
>> an hour or so ago. See the git log for details
>>> (in my first try a few questions arose, but they are probably all
>>> answered if I knew the key bindings and their expected behaviour).
>> There are a few mostly correct documents on the web.
>> The biggest differences I can think of right now from those are are:
>> 1) the tranzport defaults to "slave mode" where the shuttle is slaved to
>> the grid mode on the screen - moving by bars shuttles by bars, moving by
>> beats or samples, etc.
>> 2) The meaning of shifted-in, shifted-out, and shifted-add and
>> shifted-next has changed from whatever is documented on the web.
>> 3) There are now means to set loops and punch in ranges. Hitting loop
>> enables loop mode, which redefines play, shift-rewind, and shift-ffwd to
>> "do the sane thing".
>> Holding down loop and then ADD, will put the loop start at the current
>> play head location. Shift->loop->add, puts the loop end there.
>> Same mostly applies to punch mode, although I have not modified the
>> meanings of shift-rewind or shift-ffwd
>> I'm still not satisfied with scrub mode...
>>> Giso
>>> David Taht wrote:
>>>> Giso Grimm escribió:
>>>>> Hi Mike et al,
>>>>> I looked at the issue 2521 for installation of the kernel based
>>>>> tranzport driver. I had no problems to compile the kernel driver, and
>>>>> test worked perfectly. However, I am confused how to compile the ardour
>>>>> driver. Do I have to replace the "libs/surfaces/tranzport" folder of
>>>>> ardour by the folder by the "tranzport" folder in your git reository
>>>>> "git clone git://git.teklibre.com/home/d/src/git/frontier", and than
>>>>> recompile ardour?
>>>> No, at present, you patch SConstruct with SConstruct.patch from that bug
>>>> report and
>>>> In your ardour tree,
>>>> mv libs/surfaces/frontier/tranzport libs/surfaces/frontier/tranzport.old
>>>> ln -s wherever_your_git_tree_is/tranzport \ libs/surfaces/frontier/tranzport
>>>> sudo scons KERNELTRANZPORT=1 install
>>>> I am hot on the trail of making the tranzport driver feature complete at
>>>> the moment, more stuff going in this afternoon (it's 8:30 AM my time)
>>>> please do a git pull early and often.
>>>>> -- Giso
>>>>> _______________________________________________
>>>>> ardour-dev mailing list
>>>>> ardour-dev at lists.ardour.org
>>>>> http://lists.ardour.org/listinfo.cgi/ardour-dev-ardour.org

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