[Implemented] ConvertImage()

[Phantomas]

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?

[ts-soft]

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.

[Fred]

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

[Phantomas]

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).

[luis]

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.

[Polo]

Could be useful, libjpeg and such probably support that?

[Phantomas]

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.