Thank you for the response Peter. Pygame image to string code below
def displayscreen():
## image_filename = str(va.page) + ".jpeg" # va.page is the current
page no
filename = "zxs" + str(va.page) + ".ada"
## images are saved in runs.py and to use it storeno = 2
image2blit = getfrompy.main(filename, storeno = 2)
if image2blit == None:
## no image saved in file so draw the screen with make_screen_text
make_screen_text()
## now grab the screen
screen = SCREEN.subsurface(0, 0, SCREENW, SCREENH)
## convert to string
screenstr = pygame.image.tostring(screen, "RGBA", Falsey)
## nowencode and write to dict in runs.py
strA = XOR(screenstr, coder)
str1 = base64.b64encode(strA)
scrnstore [filename] = str1
image2blit = pygame.image.frombuffer(screenstr, ( SCREENW, SCREENH
), 'RGBA')
va.getscr = True
return image2blit
this code took too long to convert back and fourth. around 6 seconds.
screen = SCREEN.subsurface(0, 0, SCREENW, SCREENH)
image2blit = pygame.Surface.convert_alpha(screen)
memsave = StringIO()
pygame.image.save(image2blit, memsave)
memsave.seek(0)
pygame.image.load(memsave, iname) <- code crashes here
strA = XOR(iname, coder)
str1 = base64.b64encode(strA)
scrnstore [filename] = str1
the above code crashes at the point marked with the message pygame.error:
unsupported image format. What I want to do is to grab the screen surface,
convert it to a string format and save to a dictionary.
The dictionary will be pickled and saved to a file.
I want all my images in this file and NOT AS IMAGE FILES ON DISK.
Please help to resolve this.
On Wed, Sep 10, 2014 at 10:05 AM, Peter Shinners <[email protected]> wrote:
> On 09/09/2014 04:57 AM, diliup gabadamudalige wrote:
>
>>
>> How can a Pygame surface be converted to an image file say a jpeg or a
>> png WITHOUT writing the file to disk? Say after a screen grab?
>>
>>
>
> It is not highly documented, but you can pass a file-like object to
> pygame.image.save. So instead of a filename you could create a StringIO
> buffer and write into that. Or you could use something crazy like an html
> post request and upload directly to a website.
>
> If you are trying to load the image into a different library, it will be
> easier to use the "tobuffer" or "tostring" methods on the Surface. Then
> hope the other library you are using has a fromstring, frombuffer, or
> fromdata style function.
>
>
>
--
Diliup Gabadamudalige
http://www.diliupg.com
http://soft.diliupg.com/
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