Jeff Epler
36411203ff
This allows operations between channels in an image. It can be used for the following use cases: * Conversion to B&W or sepia * Adding color casts * Mixing or swapping arbitrary channels * Inverting or scaling arbitrary channels
69 lines
3.7 KiB
Python
69 lines
3.7 KiB
Python
import binascii
|
|
from displayio import Bitmap
|
|
import jpegio
|
|
|
|
content = binascii.a2b_base64(
|
|
b"""
|
|
/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDACEXGR0ZFSEdGx0lIyEoMlM2Mi4uMmZJTTxTeWp/fXdq
|
|
dHKFlr+ihY21kHJ0puOotcbM1tjWgaDr/OnQ+r/S1s7/2wBDASMlJTIsMmI2NmLOiXSJzs7Ozs7O
|
|
zs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7/wAARCADwAPADASIA
|
|
AhEBAxEB/8QAGgABAAMBAQEAAAAAAAAAAAAAAAIDBAEFBv/EACsQAAICAQMDAwMEAwAAAAAAAAAB
|
|
AgMREiExBEFREyJhMkJSBTNxgRRikf/EABgBAQEBAQEAAAAAAAAAAAAAAAACAQME/8QAIxEBAQAC
|
|
AgICAgMBAAAAAAAAAAECEQMSITFBURMiMmFxof/aAAwDAQACEQMRAD8A8oAAAAAAAAAAAAAB2MXJ
|
|
7FsafLNktbpSC/0oh0rsb0pqqATlU1xuQJs0wAAAAAAAAAAAAAAAAAAAAAAAAAAADDfY6oSfYDh2
|
|
MXJ4RONLfOxbGKitipjflshFKKwW1U23vFUHL57EY1+rZCHlnrz6qrooKuCSx3LtvqGWXV58+g6q
|
|
EdTgmvgzJ7tNYa5TPo6+ohKmM3JPPg839Y6eMdN8FjLw/kmZX5Jk88hOCkvkmDpZtbI1h4YLbo/c
|
|
VHGzVRQAGMAAAAAAAAAAAAAAAAAAAC5AA0rSltgOcU8ZK61GSw+STqWcnWW68LWAAtqdE9F0ZeGV
|
|
9e5O7PZ8HQ9+dybNoyx3ZVXT2ThNNuWnwbuo66V9Cq9NYXdmYGdfGm9JvaEYNfcTAKk0pGxZgzMa
|
|
pfSzKc805AAISAAAAAAAAAAAAAAAAAAAAABZCU2ttytLLwXWPRFQj/Zs8KxnzXVOX4ndUvxM+X5Z
|
|
JWSXcqZG161PnY6lgpVsu5ZCxS/kqZStlTABbQAARseIMzF9zxAoOWftGQACGAAAAAAAAAAAAAAA
|
|
AAAAAACyiOZanwiE3qk2S9RqGldyAVbNSQAASHYvDTOCKy0BrXAC4B3dAAGim97pFRKx5myJwyu6
|
|
igAMYAAAAAAAAAAAAAAAAAAAAAAAAAAAWUxzLPgrNtENMF5ZuPt048O9RBKfJE7NymroIzeItkim
|
|
6XCMyuomqgAcUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAC3p4KdizwjelAz9PDTDPdljeEdMfD1Y8Ws
|
|
d70XqOVjkqAOjhJqBlm9Umy+2WImc5Z34ZkAAhIAAAAAAAAAAAAAAAAAAAAAAAAAABZRW7LEvBWb
|
|
OmjohnuzZ7Xhhcr4XaWuxG2LUcktT8lc7HLbsdZp25byTUutIAHG8LJrkpulmWPBWG8tsHG3dc6A
|
|
AwAdUW+w0S8DQ4BjAAAAAAAAAAAAAAAAAAAAAAtyz09McyNk2I1R1zSN6WFgp6SKjFya5NOYeCsZ
|
|
4enitwn8ark8RKjRZKGjHcznSTSMuS53zNBXc8Rx5LCmfvsS7GZekVUEm+EaFXFdiSSXCI6M6qY1
|
|
N87Fsa4rsSBcxkboACWTWoygpLdFFkHB78HowUfTxjcz9UloRGchMe0yt8aZAd0vwcObmAAAAAAA
|
|
AAAAAAABOENX8CTY7RhXRzwW9R7rFFdyEqsLMeUT6eLstcpPgvVnhcmM9r4rTFI6S0Pyjqrb7lar
|
|
13n45PbPJ5Zw7JYk0cKea3fkI0VuyUpITeIMt6RqNL3WTL7Rlv4QaaZOEHOWOCeU+6Oxa1LdDbvl
|
|
xaxt2rnW4yxycUGWzktT3RB2QX3Iy5Kw48esuVW4j6fBBJIrfUwUGllsqd05fTHAuW0cdw49/wCt
|
|
OuME3J4MspO6f+qCrcnmbyTSSWw1b7Rllcrb9ukZQUlwSJ11ufBWtptkm6xSi4vDOF/VQ0teSg42
|
|
aqbNUABjAAAAAAAAA21U5gsGI9DpZ6obdkXh7VP43XtTb7E0yXTRxXnyc6rheWyyCxBI23deniws
|
|
y8pHJScVszpGxPHBs9unLrrdq3uAC3kV3P2nFVtyxd2Rak8Ea3Wa3VfpP8mPSf5MvhXKfBBpp4N6
|
|
w8W6V+l5bCqiWYJyqko5HWF1PapQiuxI7h+CdVep+41t/WbVhLLwiyVeJNJ7HYxUXkbXjx5ZTcQd
|
|
clyi2paWSsfBltu+2HPky3VMcZ+LeXuo3P1b8dkcdUTsI6V8kzJj9uevtnnU47rdEDWZ7YaXlcMn
|
|
LHXmMsQABCQAAAAll4Asqrzu+CaU65aq3/RNLSkjp1mM0vU0qlZKc4qSxubVJY+kxz/ciajJ4rtx
|
|
4TPdyT1R/E5OxaMY5IkLOxUreXhx67QABTirt+qP8mpcIy3cJhTtx5Od9unHnMLdttbxkg92Z1fb
|
|
H7UPXs/EbbjnhM7l9tBOTehGT15/iHfa1jSJTPPDK436aCUPqRk9S5/BzFr5lgTas+WZY2RpnOKb
|
|
y0VS6iK+lZZX6S7tskopcI3VqPy5a1HJTsue+yOxgokgbI5SAAKaHLIZplLwdFvtpfyTl6Otynhk
|
|
ABxcwAACVbxZF/JEkoSxqEGyxNvJDDZOqanBeS6vCT2O0u3fkw649sWK3ZxfybIxzFNNFF1eYto7
|
|
RLVWvgnxtWGOcy1vS/Q/KDrTjuyAecM2WLz4+TLHXZS+QAW86NizBnKnmOPBMp/bs+GTfF2yrgOQ
|
|
U0Aaa5QAAJN8IAACTrko6sbBlsiIO4fgnXD3e7gxVl1vSslBZks8Fs4RUtkcMt06cfH3x3U5qKw0
|
|
jF1U8tRXY0dRaoQS7mBtt5ZGdcplMePpAAEOYAAB3U33OACUJuDyjXV1MM+7YxA2XSu111b3ODz7
|
|
kUVSULnHOzM4G3S81uv6elhnCqjqm0oz5L9fwi5qu2PJnlNyf9VOuTeUiBpVj8FEovLZe443HPdt
|
|
nhEjKKksMkAlXCfpvTNbeTTXpypLcpaTWGV4lU8xlt4J8xUykmrPDbalJor0IqXVZfvRZG2EuJGd
|
|
tuvDMOki6rCTWCtxTfBODWHuiOTbfBhhj3yrmleC1vNZXleTrsiq95ISt5ccf1/1w6uUUy6iC43K
|
|
pdTL7VgncVny4ya212NJ7vBms6hLaH/SiU5TeZPJEy5beb8tmMxjrbk8t5OAEuQAAAAAAAAAAAAA
|
|
E4XThw9iADZbPTTHqvKJf5EPkyA3ddZzZxqd1bIO6PZMoBvapvJasdrfGxW23ywDLbXPYADB1Sa4
|
|
bGuXlnADbup+WcAAAAAAAAAAAAD/2Q=="""
|
|
)
|
|
|
|
decoder = jpegio.JpegDecoder()
|
|
|
|
|
|
def decode_common(content, scale):
|
|
w, h = decoder.open(content)
|
|
bitmap = Bitmap(w >> scale, h >> scale, 65535)
|
|
decoder.decode(bitmap, scale=scale)
|
|
return bitmap
|
|
|
|
|
|
def decode_blinka(scale):
|
|
return decode_common(content, scale)
|
|
|
|
|
|
def decode_resource(rsrc, scale):
|
|
rsrc = __file__.rsplit("/", 1)[0] + "/" + rsrc + ".jpg"
|
|
with open(rsrc, "rb") as f:
|
|
return decode_common(f, scale)
|