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Thanks for the reply Russell. See below<br>
<br>
Russell Penney wrote:
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<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">Brad,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;"> I am
seeing a lot of synergy
actually. You do the audio tidy up, Blake does tools and doco, Dean
does some
very cool low level stuff which I sure forms the basis of a bunch of
later work
(i.e. better algorithms for OGG, etc than straight ports of “C”),
Yoshiki,
Martin and others do video, I handle file formats (with lots of help :)
and the
others test.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">The main
things I see happening from here
that we need to resolve ASAP are a bunch of questions. <o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">What do
people see as the interfaces?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">What have
others seen in a multimedia
framework? Is there a good one we can steal, I mean be influenced by.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">What are the
lowest common denominators?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">What
functionality does everyone want?</span></font></p>
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</blockquote>
I think it's a bit more than that, at least in the audio area clean up
-- not hard, but we need agreement from a few more people that are
smarter than me. I don't want to go about changing the concept of the
audio functionality (which is needed IMHO) w/o agreement from both the
people who will use it, and from the general community on how it will
fit into the overall design/usability of Squeak.<br>
<br>
>From my experience, some audio classes are intertwined. For instance:
something you probably already found, AbstractSound has instance
methods that store audio files. Some of these methods use other audio
class methods. As an example: AbstractSound>>storeAIFFSamplesOn:
uses the SoundPlayer samplingRate class variable -- and this class
variable is hard coded at initialize -- not good for the SoundPlayer
tool and worse, it makes storeAIFFSamplesOn: not reusable. <br>
This isn't a hard problem to fix in code -- but it is in the overall
design of the system: I think it boils down to what object should
maintain attributes of the audio capture -- a design issue. I think
it's obvious, but we just need agreement before we change the design.
(ok, maybe it's not a great example cause it's easy. But, I've had to
override audio classes so that I could make them usable -- I didn't
want to fork off and not be compatible with future versions.)<br>
<br>
Other things are easier to tidy up. For instance, the same method uses
an instance method named AbstractSound>>isStereo --- but it is
hard coded to return 'false'. yuck.<br>
<br>
So, for me, I think we need to look at all the audio classes, uncover
the problems, and come up with a design (and I'm not saying a complete
redesign) and a plan to execute.<br>
<blockquote cite="midmd5:64756D6D79206D657373616765206964" type="cite">
<div class="Section1">
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;"><o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">Just as an
example what about these?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">aURI
playVideo<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">aURI
playAudio<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">aURI
play “uses
a specific player based on the file type”<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">aURI
edit “opens
a specific editor based on the file type”<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">aURI
editAudio “opens
an audio editor on just the audio stream of the file”<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">When we
figure out where we want to get
to, we can work out how to get there.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">As for the
question below, yes I am
interested in re-useability, something that everyone raves about for OO
and
Smalltalk but something that Squeak is very bad at doing in practice. <o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">I am not a
“programmer”
although I program ;) so I will write code for the framework. I already
have a
simple MM framework but I need some help with the design, I am not
experienced
enough to know which are the better OO ways of doing things.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="blue" face="Arial" size="3"><span
style="font-size: 12pt; font-family: Arial; color: blue;">Russell<o:p></o:p></span></font></p>
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</blockquote>
Can you explain more about what you mean by framework? What are you
proposing and at what level?<br>
Is this an analysis of the current design? Or is this from a user
perspective as you described above (aURI playAudio)<br>
<br>
If you take my example above that focuses on audio only, and blow it up
to add other MM types, it becomes a bigger and more complicated design
issue. Thus, my initial cry to the Squeak community. It's not
rocket-surgery, but it's bigger than me.<br>
<br>
brad<br>
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