*Save in a format your converter to SCR understands
===Sample Python program programs for conversion to SCR===
You need to save your image in PPM ASCII format in Gimp for this. Also, Python needs to have NumPy installed. The program will also print the necessary INK statements for BASIC.
The first variant is for MODE 0 images:
<pre>
import struct
f = file("cpc3input.ppm", "r") # input filebinfile = open('bin3ouput.scr', 'wb') # output file
pal = [[0,0,0],[255,255,255]] # initial palette
</pre>
For MODE 1 images, replace the second-to -last loop with:
<pre>
binfile.write(data)
</pre>
Finally, here is a program for MODE 2. Input file must an ASCII P'''B'''M this time.
<pre>
# Transform PBM image to Amstrad SCR file (MODE 2)
# 2011-08-09
from numpy import *
import struct
f = file("input.pbm", "r")
binfile = open('output.scr', 'wb')
def byte_bin(x):
r=""
for n in range(7,-1,-1):
v=2**n
if x>=v:
x-=v
r+="1"
else:
r+="0"
return r
f.readline()
f.readline()
g = f.readline()
xdim, ydim = [int(q) for q in g.split()]
b=zeros((xdim,ydim))
x, y = 0, 0
while True:
g = f.readline()
if g=="": break
for q in g:
if q in ("0", "1"):
b[x,y] = int(q)
x+=1
if x==xdim:
x=0
y+=1
for cl in range(8): # line in character
for y in range(ydim/8):
for x in range(0,xdim,8):
oo = 0
for q in range(8):
if b[x+7-q,y*8+cl]==1:
oo += 2**q
data = struct.pack("B", oo)
binfile.write(data)
data = struct.pack("B", 0)
for t in range(48):
binfile.write(data)
binfile.close()
</pre>
==Links==
*[http://code.google.com/p/newoldtv/downloads/detail?name=retro_computing_gimp_0.0.5.tar.gz ''Retro Computing GIMP filters''] (Python filters for GIMP to create optionally dithered images for the CPC, Spectrum, BBC Micro, C64, and Apple II)
*[https://codeberg.org/lightforce6128/gimp-file-cpp-bin-save ''gimp-file-cpp-bin-save''] (GIMP plug-in to save images in CPC format)