haxe.io.Bytes and ByteArray

[tom rhodes]

Hi,

can i use Bytes where in AS3 a ByteArray is used? i've been posrting stuff using Array<Int> so far but now i'm thinking i've made a big mistake ;)

cheers,

tom.

[Simon Krajewski]

Bytes.getData() will give a BytesData object, which is typedeffed to
ByteArray on flash platform. You cannot use Bytes directly where
ByteArray is expected, but Bytes.getData() should make it work.

Simon

[Cambiata]

@Simon:
With Sam's answer here https://groups.google.com/d/msg/haxelang/5jiJHm4N8no/IcJZDN3Ese8J as a starting point,
would it be possible, using som macro magic, to create a flash implementation of Bytes that transparently could switch
between Alchemy Memory or ByteArray?

[tom rhodes]

i'm going from as3 and trying to make this cross platform.

this is the type of thing in AS3 that makes me want to use Bytes in haxe...

// packed fields

out.writeByte((0x80 | // 1 : global color table flag = 1 (gct used)

     0x70 | // 2-4 : color resolution = 7

     0x00 | // 5 : gct sort flag = 0

     palSize)); // 6-8 : gct size

out.writeByte(0); // background color index

out.writeByte(0); // pixel aspect ratio - assume 1:1

if out becomes Bytes, can this be translated as...

// packed fields

out.set((0x80 | // 1 : global color table flag = 1 (gct used)

    0x70 | // 2-4 : color resolution = 7

    0x00 | // 5 : gct sort flag = 0

    palSize, out.length)); // 6-8 : gct size

out.set(0, out.length); // background color index

out.set(0, out.length); // pixel aspect ratio - assume 1:1

or am i really badly getting this wrong :P

Simon

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[tom rhodes]

ooops, sorry got pos and v the wrong way round in the translation attempt, hopefully you get the idea!

[Simon Krajewski]

Am 09.06.2012 19:13, schrieb tom rhodes:

i'm going from as3 and trying to make this cross platform.

this is the type of thing in AS3 that makes me want to use Bytes in haxe...

// packed fields

out.writeByte((0x80 | // 1 : global color table flag = 1 (gct used)

     0x70 | // 2-4 : color resolution = 7

     0x00 | // 5 : gct sort flag = 0

     palSize)); // 6-8 : gct size

out.writeByte(0); // background color index

out.writeByte(0); // pixel aspect ratio - assume 1:1

if out becomes Bytes, can this be translated as...

// packed fields

out.set((0x80 | // 1 : global color table flag = 1 (gct used)

    0x70 | // 2-4 : color resolution = 7

    0x00 | // 5 : gct sort flag = 0

    palSize, out.length)); // 6-8 : gct size

out.set(0, out.length); // background color index

out.set(0, out.length); // pixel aspect ratio - assume 1:1

or am i really badly getting this wrong :P

Why aren't you just using haxe.io.BytesOutput?

Simon

[Simon Krajewski]

Not sure I understand, but you can make a implementation for BytesData
which writes to flash.Memory and then switch using conditional compilation.

Simon

[tom rhodes]

"Why aren't you just using haxe.io.BytesOutput?"

i don't know :) that's why i'm asking what's best to do here :)

cheers for the tip i'll have a look now...

[tom rhodes]

http://haxe.org/api/haxe/io/bytesoutput

can't see any writeByte, writeBytes equivalents in there?

[Simon Krajewski]

Am 09.06.2012 20:11, schrieb tom rhodes:
> http://haxe.org/api/haxe/io/bytesoutput
>
> can't see any writeByte, writeBytes equivalents in there?
>

"extends Output": http://haxe.org/api/haxe/io/output ;)

Simon

[tom rhodes]

ha! RTFM. sweet, thanks Simon :)

Simon