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Embed a surface as a PNG in a patcher file

September 2, 2010 | 7:36 pm

I am trying to figure out how to embed a surface as a PNG in a patcher file…
I was able to find a code snippet that might be relevant for what I am trying to accomplish.

long size = 0;
void *data = NULL;

jgraphics_write_image_surface_to_filedata(x->j_surface, JGRAPHICS_FILEFORMAT_PNG, &data, &size);
if (size) {
	x->j_format = gensym("png");
	binarydata_appendtodictionary(data, size, gensym("data"), x->j_format, d);
	x->j_imagedata = data;
	x->j_imagedatasize = size;
}

However, the good stuff is probably inside the function binarydata_appendtodictionary() which is not available to me.

Binbufs? Dictionaries?

What’s the right strategy to accomplish this in Max 5?
Can someone post a more complete/detailed example?

Thank you for any help.

- Luigi


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