Pixel Bender for Flash Player lets you play some more advanced games. Based on your needs you can force your kernels to “eat” not only BitmapData, but also ByteArray-s or Vector-s. With this knowledge, you can simply use Pixel Bender kernels for some fast math or processing like 3D engines (3D to 2D projection) etc. Lets have a look at some simple demos, how to push vector and raw bytes directly into shader via ShaderJob:
Have you ever heard about inline images? Inline images use the data URI scheme to embed images directly within web pages. As defined by RFC 2397, data URIs are designed to embed small data items as “immediate” data, as if they were referenced externally. This basicaly means, you can insert base64 encoded byte code of any image directly into html file. Using inline images saves HTTP requests over externally referenced objects. Data URIs can potentially store any type of data, not just images!
How would you convert / compress 64 character long hex string (0-9a-f) into shortest possible web-safe-char string? (base64 chars is fine) The reverse algorithm must be able to “uncompress” resulting string back into original hex.
I have created p16Top64() compress algorithm and p64Top16() uncompress (reversed) algorithm based on ByteArray class and writeUnsignedInt(), readUnsignedInt() methods. Both p16Top64() and p64Top16() methods are now part of sk.yoz.data.Serialization class. By using p16Top64() method I was able to compress original 64 chars into 44 chars. But, is it possible to compress it into less than 44 char long base64 (0-9a-Z/=) string?
Lets see how to convert between Bitmap, BitmapData and ByteArray in few examples:
This classes let you serialize your ActionScript 3 Objects to ByteArray or String:
Lets assume you want to save an image (or any DisplayObject) from flash to disk, or upload to facebook etc. What you need is to encode your BitmapData into an Jpeg and send ByteArray raw data to be saved/uploaded. There are few ways how to do it.
First, you can use original adobe mx.graphics.codec.JPEGEncoder. Sadly, this encoder is the slowest. There were attemps to make it faster by otpimizing code by bytearray.org, that resulted into two times faster org.bytearray.images.JPEGEncoder. Usage is pretty simple:
