PureBasic Forums - English

Posted: **Sat Aug 04, 2012 10:32 am**

Implemented as EncodeImage()

Hello. Above all, sorry for my bad English. Subject:

Currently I can convert images (in BMP, JPEG, JPEG2000, PNG) only through SaveImage() function (with recording the output image in file).

I propose to add a new function called ConvertImage(). This function will convert image and write it in memory (RAM).

Like that:

Code: Select all

UseJPEGImageEncoder()
#img = 0
If CreateImage(#img, 32, 32)
  *memory_id = ConvertImage(#img, #PB_ImagePlugin_JPEG, 7)
  FreeImage(#img)
  If *memory_id
    ;done, now *memory_id — my JPEG image in memory
    FreeMemory(*memory_id)
  EndIf
EndIf

What you think?

Posted: **Sat Aug 04, 2012 10:44 am**

This make no sense, you have only a jpeg on filesystem but never in RAM. In RAM you have always the unpacked native OS-Format!
You can only show a image in native OS-Format.

Posted: **Sat Aug 04, 2012 11:12 am**

I think he wants to compress image in memory, for example sending it trough a socket without writing it to the disk.

Posted: **Sat Aug 04, 2012 12:16 pm**

Fred wrote:I think he wants to compress image in memory, for example sending it trough a socket without writing it to the disk.

Exactly!

With ConvertImage() we can more do much better. Another example:
Work with Image > ConvertImage() in JPEG > Edit Memory of Image (e.g., edit EXIF data) > Save Memory in file (create image).

Posted: **Sat Aug 04, 2012 4:56 pm**

Under Windows you can save the image using a named pipe, if that's ok for you.
And the access the memory where the "saved" image is.

Posted: **Sat Aug 04, 2012 5:34 pm**

Could be useful, libjpeg and such probably support that?

Posted: **Mon Aug 06, 2012 10:12 am**

luis wrote:Under Windows you can save the image using a named pipe, if that's ok for you.
And the access the memory where the "saved" image is.

Yep, I also have this code.
But, I think this is "hack". Anyway, ConvertImage() would be more comfortably/easy/simple.

PureBasic Forums - English

[Implemented] ConvertImage()

[Implemented] ConvertImage()

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