ming-devr — a list for ming developers and those interested in ming's guts

[Ming-dev] new namespace.Class

[strk <st...@ke...>]

I've found out that Ming does not support object instantiation
from a Class defined in a namespace other then _global.

For example:
	myObj = new myNamespace.Class()
results in a syntax error.

Can you confirm this ?
Is there anything you can do to solve it ?

TIA

--strk;

[Ming-dev] garbage collector updates

[strk <st...@ke...>]

I've updated the garbage collector to not rely on 
blocks list to be unmodified. This is because sometime
an object destructor will destroy other objects
(see destroySWFJpegBitmap_andInput) so we need not
to use cached pointers to node that are already 
destroied by other destructors.

The new code keeps destroying the firstnode until
it evaluates to false (is NULL). Each node destructor
will remove that node from the list and modify the
firstnode pointer.

--strk;

Re: [Ming-dev] ming garbage collection

[strk <st...@ke...>]

I've finally implemented garbage collection in Ming.
Sorry klaus, I was too lazy to take care of Ming objects from user code..

What you have now is a Ming_collectGarbage() function that will
destroy all Ming objects. The implementation does not cover *all* ming
objects because I did not have handy code to test it on.
Currently handled: movie, movieclip, shape, jpeg, fill, input.

Robert, can you give it a try and add garbage collection support 
for the objects you still see alive after Ming_collectGarbage call ?
Verify that TRACK_ALLOCS is defined in ming_config.h and copy from
movie.c the changes in the struct, the constructor and the desctructor.

Then, when you've done with the Ming object you created call
Ming_collectGarbage().

Note that you must know what you are doing, since calling
Ming_collectGarbage() and then trying to use your objects
will result in a segfault. 

Use with care. If you're afraid, keep doing as you always did and
everything will be fine. If you can't stand 6 bytes of overhead for
each created Ming object undefine TRACK_ALLOCS in ming_config.h.

--strk;


On Mon, Apr 05, 2004 at 05:33:39PM +0200, strk wrote:
> On Mon, Apr 05, 2004 at 01:29:09PM +0200, Klaus Rechert wrote:
> > 
> > >On Sun, Apr 04, 2004 at 05:03:09PM -0000, ham...@t-... wrote:
> > >
> > >  
> > >
> > >>Now, to the subject of garbage collection:
> > >>I could imagine a setup where ming keeps a linked list of allocated objects. Every object
> > >>has a destructor, and the destructor would unlink the object from the list. So if it comes to
> > >>garbage collection, one could just walk the linked list and called all the objects' destructors
> > >>This should be a function available through the api, because otherwise we get problems with
> > >>php or perl - they build their own objects which reference the ming objects, and call the
> > >>destructors themselves
> > >>    
> > >>
> > Hi,
> > 
> > how about only "exporting" a list of Objects to the user which are 
> > safely destroyable? i still think the destruction should be transparent 
> > to the user. in some cases it isn't possible to destroy 
> > character-objects (like Fonts, Sound-stuff, video etc. ), so if the 
> > destruction isn't transparent you have to guess if your pointer is still 
> > valid.
> > 
> > The list of no more needed Character-objects could be returned by the 
> > SWFMovie_flush() method. All Character objects need refcounts then. The 
> > refcount should be incremented at somewhere SWFMovie_add() and 
> > decremented at write/complete if its safe to release the object.
> > 
> > What do you think ?
> 
> I started working on the simpler implementation.
> What I need is just a way to kill all Ming objects created so far.
> Calling Ming_cleanup() when finished working with a Movie or a set of
> Movies would ensure there are no Ming objects allocated. You know when
> you are calling Ming_cleanup() you won't try to use again the Ming
> objects previously created.
> 
> What you are proposing sounds a bit too complex to me, in 
> both user and developer terms. I'd start from the API.
> If you show me how simple would it be for the user I'm ready
> to change my mind (development cost remains though:)
> 
> 
> --strk;
> 
> 
> > 
> > Cheers
> >     Klaus

Re: [Ming-dev] ming and flashplayer 7

[strk <st...@ke...>]

On Thu, Apr 29, 2004 at 01:31:58AM +0200, Roberto Saccon wrote:
>   Hi all
> 
> I wanted to try aout some stuff which is anly possible with flash player 
> 7, like changing the context menu, but  the ming sources say:
>  
>     if(version < 4 || version > 6)
>         SWF_error("Only SWF versions 4, 5 and 6 are currently 
> supported!\n");
> 
> Well, is there anywhere a todo-list of what is missing to to enable ming 
> for the flash player 7 ? 

CVS Ming say if(version <4 || version > 7)
No problem changing that. I suggested to completely remove that check,
since IMHO the user should be trusted.

--strk;

> 
> regards
> Roberto
> 
> 
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[Ming-dev] ming and flashplayer 7

[Roberto S. <ro...@sa...>]

  Hi all

I wanted to try aout some stuff which is anly possible with flash player 
7, like changing the context menu, but  the ming sources say:
 
    if(version < 4 || version > 6)
        SWF_error("Only SWF versions 4, 5 and 6 are currently 
supported!\n");

Well, is there anywhere a todo-list of what is missing to to enable ming 
for the flash player 7 ? 

regards
Roberto

[Ming-dev] ming 0.3 'shared library' error

[gaz b <ga...@ya...>]

Hi
The following ming 0.3 php scripts produce an error
message on win32 but still outputs a valid swf...

To test just compile addexport.php to produce
addexport.swf and then compile lib.php to produce
lib.swf and an error message(Exit code: -1073741819).

Is the code incorrect?

thanks
gazb

///////////scripts below//////////////////
// #######addexport.php###############
<?
Ming_setScale(20.0);
ming_useswfversion(6);
$movie = new SWFMovie();
$movie->setRate(20.000000);
$movie->setDimension(550, 400);
$movie->setFrames(1);
$movie->setBackground(0xcc,0xcc,0xcc);

// make red circle shape $c
$c = new SWFShape();
$c->setRightFill(255,0,0);
$c->drawCircle(100);

// add shape $c to  sprite $sp
$sp= new SWFSprite();
$f1 = $sp->add($c);
$sp->nextFrame();

// give $sp sprite linkage 'redcircle'
$movie->addExport($sp, 'redcircle');
// export 'redcircle' in frame 1
$movie->writeExports();

$movie->save("addexport.swf");
?>

// #######lib.php###############
<?
//import movieclip from a shared library
// compiling this script produces an error message
// on win32 but still outputs a working swf...

Ming_setScale(20.00000000);
ming_useswfversion(6);
$movie=new SWFMovie();
$movie->setDimension(550,400);
$movie->setBackground(0xcc,0xee,0xcc);
$movie->setRate(12); 

$clip = $movie->importChar("addexport.swf",
"redcircle");
$i = $movie->add($clip);
$i->moveTo(100, 100);

$movie->save("lib.swf");
?>
//////////END////////////

 


 



	
		
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[Ming-dev] swf#compiler.flex unescape rewritten

[strk <st...@ke...>]

I've rewritten the unescape function to avoid strcpy calls
with overlapping mem segments as arguments.
Chances are it's faster.
--strk;

[Ming-dev] memory tracking

[strk <st...@ke...>]

I've added a garbage collector module for ming.
Provides a call to add a new object to the allocations list
passing object pointer and destructor function pointer and
returning a memory node.
Provides a call to remove a node from the list.
Provides a Ming_collectGarbage() call to go throug the
list and destroy all linked objects.

Every Ming object module should include registration/removal
of allocs if the compile time option TRACK_ALLOCS is defined
and evaluates to something != 0.

You can see an example in movie.c.
Note that the list node pointer is embedded in the movie structure,
so to be fast in link/unlink operations.

If you do not call Ming_collectGarbage() everything
is like before, except for bigger memory consumpion (6 bytes for
each ming object in memory).
If you don't define TRACK_ALLOCS everything will be *exactly* as
before, and calls to Ming_collectGarbage will do nothing.

I'd remove mem.c and mem.h for the sake of simplicity,
they have a too general approach, which is not even working...
Anyone against this ?

--strk;

Re: [Ming-dev] drawing with ming or actionscript ?

[strk <st...@ke...>]

On Wed, Apr 28, 2004 at 02:20:17AM +0200, Roberto Saccon wrote:
> Hi all
> What is better to draw la lot of vectors (for converting an image from  
> a other vectorformat to swf)
> 
> the ming funtions or actionscript embedded actions  in ming
> 
> It is easy to imagine that ming directly takes much less space, but is 
> there any advantage of the actionscript variant ?

The actionscript variant allows you to send vector data in
an 'abstract' format, and then use that format to do actual
drawing on the client side. This allows you - for example -
symbols definition via user interface ( how thick is that line,
is it dashed ? What color is the fill, and what the outline ? )
...

--strk;


> 
> reagards
> Roberto
> 
> 
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[Ming-dev] drawing with ming or actionscript ?

[Roberto S. <ro...@sa...>]

Hi all
What is better to draw la lot of vectors (for converting an image from  
a other vectorformat to swf)

the ming funtions or actionscript embedded actions  in ming

It is easy to imagine that ming directly takes much less space, but is 
there any advantage of the actionscript variant ?

reagards
Roberto

Re: [Ming-dev] How to output ming to a buffer

[Roberto S. <ro...@sa...>]

Thanks, I sorted out the mess I had and now my examples work fine. Ming=20
really rocks !!!

regards
Roberto

S=E9bastien NICAISE wrote:

> In ming.h :
> typedef void (*SWFByteOutputMethod)(byte b, void *data);
>
> SWFByteOutputMethod is a function pointer. Write something like that :
>
> void SWFOutputMethodBuffer (byte i, void *data)
> {
>    char* buffer=3D (char*)data;
>    // Append i to buffer
> }
>
> char* buffer;
> SWFMovie_output (movie, SWFOutputMethodBuffer , buffer);
>
> Roberto Saccon wrote:
>
>> Hi all
>>
>> I want ming (C-version) to oputput the swf not to file, but to a=20
>> buffer, but I didnt found in the documntation the information, how to=20
>> do that,
>> in ming.h I found:
>>
>>    int SWFMovie_output(SWFMovie movie, SWFByteOutputMethod method,=20
>> void *data);
>>
>> But I dont know what is SWFByteOutputMethod.
>> I tried with:
>>
>>    char* data;
>>    int length =3D SWFMovie_output(movie, SWFOutputMethod, data);
>>
>> But that did not work,.
>>
>>
>> What am I missing ?
>>
>> regards
>> Roberto
>>
>>
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>>
>
>
>
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Re: [Ming-dev] How to output ming to a buffer

[<sni...@ic...>]

In ming.h :
typedef void (*SWFByteOutputMethod)(byte b, void *data);

SWFByteOutputMethod is a function pointer. Write something like that :

void SWFOutputMethodBuffer (byte i, void *data)
{
    char* buffer= (char*)data;
    // Append i to buffer
}

char* buffer;
SWFMovie_output (movie, SWFOutputMethodBuffer , buffer);

Roberto Saccon wrote:

> Hi all
>
> I want ming (C-version) to oputput the swf not to file, but to a 
> buffer, but I didnt found in the documntation the information, how to 
> do that,
> in ming.h I found:
>
>    int SWFMovie_output(SWFMovie movie, SWFByteOutputMethod method, 
> void *data);
>
> But I dont know what is SWFByteOutputMethod.
> I tried with:
>
>    char* data;
>    int length = SWFMovie_output(movie, SWFOutputMethod, data);
>
> But that did not work,.
>
>
> What am I missing ?
>
> regards
> Roberto
>
>
> -------------------------------------------------------
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>

[Ming-dev] How to output ming to a buffer

[Roberto S. <ro...@sa...>]

Hi all

I want ming (C-version) to oputput the swf not to file, but to a buffer, 
but I didnt found in the documntation the information, how to do that,
in ming.h I found:

    int SWFMovie_output(SWFMovie movie, SWFByteOutputMethod method, void 
*data);

But I dont know what is SWFByteOutputMethod.
I tried with:

    char* data;
    int length = SWFMovie_output(movie, SWFOutputMethod, data);

But that did not work,.


What am I missing ?

regards
Roberto

Re: [Ming-dev] newbie question about actionscript compiler version

[Roberto S. <ro...@sa...>]

Thanks, so I will stick to AS1, (which is ugly from viewpoint of object 
oriented design compared to AS2).
I panto create most of the swf from actionscript, which I "include" with 
ming.

regards
Roberto

Klaus Rechert wrote:

>Hi Roberto,
>
>MING doesn't support AS2. "normal" AS works mostly. 
>
>What kind of AS do you have in mind ? 
>
>Cheers
>	Klaus
>
>Am Mo, den 26.04.2004 schrieb Roberto Saccon um 14:53:
>  
>
>>Hi alll
>>
>>I started yesterday to explore ming for possible application-embedded 
>>swf generation for a wxWidgets-based application, and I have a question:
>>
>>The flex and bison parts are named with swf4compiler or swf5compiler. 
>>Does that  cause any problem if I use actionscript which was only 
>>introduced with the latest flash players ?
>>
>>regards
>>Roberto
>>
>>
>>-------------------------------------------------------
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>>    
>>
>
>
>
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>  
>

Re: [Ming-dev] newbie question about actionscript compiler version

[Klaus R. <kl...@re...>]

Hi Roberto,

MING doesn't support AS2. "normal" AS works mostly. 

What kind of AS do you have in mind ? 

Cheers
	Klaus

Am Mo, den 26.04.2004 schrieb Roberto Saccon um 14:53:
> Hi alll
> 
> I started yesterday to explore ming for possible application-embedded 
> swf generation for a wxWidgets-based application, and I have a question:
> 
> The flex and bison parts are named with swf4compiler or swf5compiler. 
> Does that  cause any problem if I use actionscript which was only 
> introduced with the latest flash players ?
> 
> regards
> Roberto
> 
> 
> -------------------------------------------------------
> This SF.net email is sponsored by: The Robotic Monkeys at ThinkGeek
> For a limited time only, get FREE Ground shipping on all orders of $35
> or more. Hurry up and shop folks, this offer expires April 30th!
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[Ming-dev] newbie question about actionscript compiler version

[Roberto S. <ro...@sa...>]

Hi alll

I started yesterday to explore ming for possible application-embedded 
swf generation for a wxWidgets-based application, and I have a question:

The flex and bison parts are named with swf4compiler or swf5compiler. 
Does that  cause any problem if I use actionscript which was only 
introduced with the latest flash players ?

regards
Roberto

[Ming-dev] png2dbl

[strk <st...@ke...>]

I've fixed C code in utils/png2dbl.c (var declarations in the wrong place).

What I'd like to ask you is:

	1) Can linking safely go -lpng ?
	   now goes -lpng12

	2) Did png12 header define 'byte' ?
	   png2 has png_byte, I've typedef'd byte in png2dbl.c
	   instead of renaming to png_byte..

I guess someone with libpng<2 should try this...

TIA

--strk;

Re: [Ming-dev] Fwd: Streaming video (FLV)

[Klaus R. <kl...@re...>]

Hi,

thats not a really a ming issue. for that features you need the
macromedia flash comm server http://macromedia.com/software/flashcom/.

connecting to a flash comm server with ming is described here:
http://klaus.geekserver.net/ming-video/examples.html

Cheers
	Klaus

Am Fr, den 23.04.2004 schrieb Anze um 12:00:
> Hi!
> 
> I was just wondering if it is possible to stream live-feed video from a few
> webcams and brodcast (multicast actually) via Flash? FLV is a streaming
> format, so I presume the Flash player should be able to play the video? If
> so, is there a way to make a real-time FLV streaming video?
> 
> What I'm trying to make is this:
> - I want to have 10 webcams across the country
> - they feed the video via Internet to the server
> - server broadcasts (multicasts) the videos to the visitors
> 
> Can I use FLV for that? If yes, does Ming support it? 
> And the most important question: how do I create the movies on-the-fly (as 
> they are recorded)? Is it possible?
> 
> Any ideas would be welcome...
> 
> Thanks & enjoy!
> 
> Anze
> 
> 
> -------------------------------------------------------
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[Ming-dev] Fwd: Streaming video (FLV)

[Anze <anz...@vo...>]

Hi!

I was just wondering if it is possible to stream live-feed video from a f=
ew
webcams and brodcast (multicast actually) via Flash? FLV is a streaming
format, so I presume the Flash player should be able to play the video? I=
f
so, is there a way to make a real-time FLV streaming video?

What I'm trying to make is this:
- I want to have 10 webcams across the country
- they feed the video via Internet to the server
- server broadcasts (multicasts) the videos to the visitors

Can I use FLV for that? If yes, does Ming support it?=20
And the most important question: how do I create the movies on-the-fly (a=
s=20
they are recorded)? Is it possible?

Any ideas would be welcome...

Thanks & enjoy!

Anze

Re: [Ming-dev] SWF7 accepted as valid version

[<ham...@t-...>]

Hi,

according to the docs on the swf file format, there is not much difference.
Besides the old "define function" as code, there is a new one which uses a more optimized
way of parameter passing, and there are a few new codes for class-related stuff.
This should not prevent a swf7 movie not using these things from working

Adding an as2 compiler to ming is a very different subject...

Wolfgang

Re: [Ming-dev] SWF7 accepted as valid version

[strk <st...@ke...>]

On Thu, Apr 22, 2004 at 09:15:25PM -0400, Barry Cordingley wrote:
> Flash 7 or flash mx 2004  uses action script 2 that's the main difference.

What's the difference between actionscript2 and actionscript ?
--strk;

> 
> 
> -----Original Message-----
> From: ham...@t-...
> Date: 22 Apr 2004 18:14:53 
> To:Min...@li...
> Cc:strk <st...@ke...>
> Subject: Re: [Ming-dev] SWF7 accepted as valid version
> 
> 
> 
> Hi,
> 
> unlike the move from 5 to 6 there is nothing in 7 that would really be a problem:
> from 5 to 6 the format of some tags changed - now 7 is the same but has a few tags that
> did not exist in 6. Nobody is forced to use them.....
> 
> Wolfgang
> 
> 
> 
> -------------------------------------------------------
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Re: [Ming-dev] SWF7 accepted as valid version

[<ham...@t-...>]

Hi,

unlike the move from 5 to 6 there is nothing in 7 that would really be a problem:
from 5 to 6 the format of some tags changed - now 7 is the same but has a few tags that
did not exist in 6. Nobody is forced to use them.....

Wolfgang

Re: [Ming-dev] SWF7 accepted as valid version

[strk <st...@ke...>]

On Thu, Apr 22, 2004 at 05:52:09PM +0200, Klaus Rechert wrote:
> Is there a spec out now ?  i can only find flash specs. Do we have SWF 7
> support ???

Dunno, we cheat though...
User willing to pretend version 7 should be helped IMHO :)
--strk;

> 
> cheers
> 	Klaus
> 
> Am Do, den 22.04.2004 schrieb strk um 17:20:
> > I've modified ming.c to accept 7 as a valid SWF version.
> > What about removing the checks completely ?
> > 
> > --strk;
> > 
> > 
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Re: [Ming-dev] SWF7 accepted as valid version

[Klaus R. <kl...@re...>]

Is there a spec out now ?  i can only find flash specs. Do we have SWF 7
support ???

cheers
	Klaus

Am Do, den 22.04.2004 schrieb strk um 17:20:
> I've modified ming.c to accept 7 as a valid SWF version.
> What about removing the checks completely ?
> 
> --strk;
> 
> 
> -------------------------------------------------------
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[Ming-dev] BitmapFillStyle matrix

[strk <st...@ke...>]

Is there a way to modify a BitmapFillStyle matrix ?
I cannot clip-fill a shape in the upper left quadrant
of the cartesian axis..

--strk;