New subject: File error on open and sound reverb problem again

14 Nov 2011

      Stephen,
I've tested the file you modified on
- Mac OS X 10.6.7 / Etoys 4.1.1
- Windows XP / Etoys 4.1.1
- Windows 7 / Etoys 4.1.1
- OLPC Sugar 11.3.0 / Etoys 113
The fix holds except that on Windows XP & 7, the reverb comes back
intermittently. That is fine for now.
I would like to find out how to "modify beep" myself (where to find
the beep code) at some point so I can apply your code change to
another file if needed.
I can now proceed with having the volunteers help us on Mac and PC
machines. I will also be able to load demo files on XO-1 and XO-1.5
laptops to do demos at the Zambian Embassy in Washington, D.C.
I will credit the posters here in future announcements.
Mike
On Sat, Nov 12, 2011 at 11:13 PM, Steve Thomas sthomas1@gosargon.com wrote:
...
Mike,
Attached is a project that I think may solve your problem.  I modified beep
to add the line highlighted below.
beep: anObject
"Play given sound or at least beep."
| sound |
    SoundPlayer stopReverb.
anObject isString
ifTrue:
[sound := SoundService default playSoundNamedOrBeep: anObject.
(sound respondsTo: #stopGracefully)
ifTrue: [self costume setProperty: #playingSound toValue: sound]]
ifFalse:
[SoundPlayer resumePlaying: anObject quickStart: true]
Also  did some testing:

Open Etoys 4.1 build 2390 (Mac OSX 10.6.8)
Open Preferences window
Check soundReverb (NOT set, like that 1985 code ;))
Open Mike's project
Check soundReverb Preference in Preference WIndow (NOT Set)
Click TestSound Play Button (while Preference Window Open)
Step 6 causes soundReverb Preference to be set

One way to get rid of the Reverb is to execute SoundPlayer stopReverb
The problem is how to do it when project starts/opens.

Tried World script set to run on "opening" (Does NOT work, doesn't

execute when project opens)
2) Tried Book Script set to run on "opening" (Does NOT work, doesn't execute
when project opens)
3) Tried Page 1 Script set to run on "opening" (Does NOT work, doesn't
execute when project opens)
4) Tried Page 2 Script set to run on "opening" (Does work, doesn't execute
when project opens)
Stephen
On Sat, Nov 12, 2011 at 6:11 PM, Mike Lee curiouslee@gmail.com wrote:
...
Bert,
The reverb stayed as it was because I didn't understand that
commenting out the initialization was going to just preserve the
reverb toggle state. The reverb disable button on the Score Player was
clicked the whole time. I toggled the button again, the reverb went
away. Upon doing a save as and reopening, the reverb was still there.
I captured the sequence through the System Browser in More detail:
http://www.flickr.com/photos/curiouslee/6338769418/sizes/o/in/photostream/
Mike
On Sat, Nov 12, 2011 at 6:03 PM, Bert Freudenberg bert@freudenbergs.de
wrote:
...
Looks fine so far. The "line disappearing" after commenting it out is
fine, it just means the actual source could not be written since that's
read-only just like the image on your system.
When you load that project now, and play a sound, the reverb should stay
as it was. Doesn't that work? Did you disable the reverb?

Bert -

On 12.11.2011, at 19:02, Mike Lee curiouslee@gmail.com wrote:
...
I stepped through again following your steps exactly. Pressing cmd-s
on my Macbook Pro running 10.6.7 and Etoys 4.1.1. inexplicably caused
the quoted string to disappear. I went ahead and saved the Etoys
project file, see screenshots:
http://www.flickr.com/photos/curiouslee/6337954306/sizes/o/in/photostream/
Upon returning to the SoundPlayer class in the code browser, the
original code is gone and replaced with different text.
The reverb persists.
To recap, others are telling me there may be a fix in 4.1.2 or 4.2,
but for now it seems like I need to find a resolution to the reverb
manually as I will be distributing 4.1.1 and 700 project files to 20
volunteers next Sunday.
This sound reverb issue is undoubtedly some legacy decision that now
must be persisted as a default because so many files expect the effect
to be present. But, like so many aspects of the grandfather clock that
Etoys is, it makes no sense. Imagine if a photo editing program tinted
your images pink by default because some developer years ago thought
that was cool. No other piece of authoring software I've encountered
since I started using graphical computers in 1985 puts a filter effect
on a media asset by default.
Mike
On Sat, Nov 12, 2011 at 6:19 AM, Bert Freudenberg
bert@freudenbergs.de wrote:
...
On 12.11.2011, at 11:15, Mike Lee wrote:
...
After some hours of reading and clicking around, I finally got to the
SoundPlayer initialize string in the class method.
"diving into the byzantine bowels of Squeak Etoys and Smalltalk" -
very courageous ;)
A better way to open a Squeak Browser in Etoys is via the XO's "view
source" key. No need to fiddle with preferences. On a Mac that's cmd-comma
and on PC ctrl-comma.
...
I added the quotes closed everything up
You need to press cmd-s / ctrl-s to "accept" the method (possibly you
did but didn't mention it). It will ask for your initials (every change is
logged with a time stamp and author).
...
and was not able to save the Etoys file due to an error writing the
image file.
You normally don't want to save the image file. On many systems you
can't (as you discovered) because this modifies the Etoys application
itself. That menu entry is in the developer's world menu (accessible by
toggling the "etoy-friendly" preference you found). The view-source menu
leaves these out, which is why we recommend using that.
...
Perhaps this is what you mean by
"attaching [the change] to the project," which I haven't a clue how
to
do.
You don't need to do anything special, as long as you edited the
method while in the project that needs the change. Any method you accept in
a project is added to that project's changeset automatically. You just need
to save the project afterwards (and it will ask you if you want to include
the changes).
...
See my screenshots:
http://www.flickr.com/photos/curiouslee/6337002318/sizes/o/in/photostream/
Mike
Very nice, I could see exactly what you were doing (except I could not
guess which OS you were on).

Bert

...
On Fri, Oct 21, 2011 at 6:32 PM, karl ramberg karlramberg@gmail.com
wrote:
> I'm not sure what Halo changes Steve suggest...
> Fix is quite easy if you know your way around the Etoys system.
> Just comment out the SoundPlayer initialize in the class method, see
> below.
> A change set with this fix can be attached to the project.
>
> Karl
>
>
> SoundPlayer class>>startUpWithSound:
>  startUpWithSound: aSound
>       "Start up the player process."
>
> +       "SoundPlayer initialize."
> -       SoundPlayer initialize.
>       SoundPlayer
>               startPlayerProcessBufferSize: (BufferMSecs *
> SamplingRate) // 1000
>               rate: SamplingRate
>               stereo: Stereo
>               sound: aSound.
>
> On Fri, Oct 21, 2011 at 8:25 AM, Mike Lee curiouslee@gmail.com
> wrote:
>> Karl,
>>
>> Good to hear of the fix. If reverb is turned off in 4.2, or if I
>> change it in the world Halo as Steve suggests, should we expert
>> that
>> the setting will be honored on prior versions--even if the file is
>> changed and resaved?
>>
>> Mike
>>
>> On Fri, Oct 21, 2011 at 2:20 AM, karl ramberg
>> karlramberg@gmail.com wrote:
>>> I fixed an issue with reverb i that is included in Etoys 4.2.
>>> SoundPlayer initializes everytime it is started and the reverb is
>>> set
>>> to true every time.
>>>
>>> Karl
>>>
>>>
>>> On Fri, Oct 21, 2011 at 5:51 AM, Mike Lee curiouslee@gmail.com
>>> wrote:
>>>> Hi,
>>>>
>>>> The Lubuto Library Project to develop 700 Etoys lessons in Zambia
>>>> is
>>>> finally nearing completion after a year of work by teachers and
>>>> students in Lusaka. There are 100 lessons in 7 Zambian languages
>>>> plus
>>>> 700 sound files that have to be associated with a button in the
>>>> files.
>>>>
>>>> Now we have have enlisted a group of Washington, D.C.-area
>>>> volunteers
>>>> from the Special Libraries Association to help with a final
>>>> finishing
>>>> pass at the files.
>>>>
>>>> Though all the files were authored on OLPC XO laptops in Sugar
>>>> using
>>>> Etoys 3.x, we wish to do the final production on Etoys 4.1 on Mac
>>>> and
>>>> PC depending on what the volunteer has. The finished files need
>>>> to
>>>> open and function properly on Etoys 3.x and 4.x on all platforms.
>>>>
>>>> I have some initial questions regarding some problems working
>>>> with the
>>>> files across different versions of  Etoys.
>>>>
>>>> 1) When I double-click to open the files from Zambia on Etoys 4.1
>>>> Mac,
>>>> I get an error message that prevents the file from loading and
>>>> makes
>>>> it impossible to close Etoys without a force quit. I have seen
>>>> this
>>>> error before when I open older project files on new builds of
>>>> Etoys on
>>>> the XO. On Eotys 4.1 Mac, I can open the file from with Etoys.
>>>> Here is
>>>> a screen shot:
>>>>
>>>> http://www.flickr.com/photos/curiouslee/6265581802/in/photostream
>>>>
>>>> And here is a sample file on Dropbox:
>>>>
>>>> http://dl.dropbox.com/u/16590498/Citonga%201%20Afabeti%201.003.pr
>>>>
>>>> 2) The sound reverb problem persists. Opening up the Etoys 4.1
>>>> Score
>>>> Player in the files authored in Etoys 3.x and clicking the
>>>> Disable
>>>> Reverb button doesn't work.
>>>>
>>>> Thanks in advance to whomever can provide some guidance.
>>>>
>>>> Mike
>>>> _______________________________________________
>>>> squeakland mailing list
>>>> squeakland@squeakland.org
>>>> http://lists.squeakland.org/mailman/listinfo/squeakland
>>>>
>>>
>>
>
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Re: [squeakland] File error on open and sound reverb problem again