Mozilla2:Image Encoding: Difference between revisions
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interface imgIEncoder : nsISupports | interface imgIEncoder : nsISupports | ||
{ | { | ||
void encode(in imgIContainer input, in | void encode(in imgIContainer input, in nsIOutputStream output); | ||
/* Output width/height */ | /* Output width/height */ | ||
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}; | }; | ||
=== encode() method === | |||
Should we put width/height on the encode method? | |||
=== Scaling === | |||
Do we want to support different types of scaling? I'm thinking we may not and may just want a solid good scaling algorithm that all encoders can use. | |||
=== Use === | |||
You would create one by doing: | You would create one by doing: | ||
createInstance("@mozilla.org/image/encoder;2?type=image/png"); | createInstance("@mozilla.org/image/encoder;2?type=image/png"); |
Revision as of 01:27, 8 March 2005
Interface
We need to add a new interface. When you read from the stream should we encode just that much? Thoughts?
Something like:
interface imgIEncoder : nsISupports { void encode(in imgIContainer input, in nsIOutputStream output); /* Output width/height */ attribute unsigned long width; attribute unsigned long height; /* type of scaling */ const unsigned long SCALE_BAD = 0; const unsigned long SCALE_NORMAL = 1; const unsigned long SCALE_GOOD = 2; attribute unsigned long scaling; };
encode() method
Should we put width/height on the encode method?
Scaling
Do we want to support different types of scaling? I'm thinking we may not and may just want a solid good scaling algorithm that all encoders can use.
Use
You would create one by doing:
createInstance("@mozilla.org/image/encoder;2?type=image/png");