Hi Thomas, aller Anfang ist schwer. Stick to it and it will seem easier after a while. You may want to look at Leonard Rosenthol's book about pdf, but the standard itself is actually quite readable (compared to, say, the C++ standard).
Best, Oliver On 13.06.21 11:51, [email protected] wrote:
Hello, I always wonder why it takes so long to display big pictures in PDF files on linux. So I recompile poppler with release+debug symbols and use valgrind profile to get an idea what is happening there. As I can see, 50% of the CPU ticks are used to copy data from A to B. But without knowing the code, its hard to say if this is good or not. So I start reading the code. Puh it's hard to understand, so I start reading the PDF reference too. As far I can see, there a linearized PDFs and and a table called xref. Not much for one week of reading ;) Perhaps I should start from scratch and write my own PDF reader to understand things better. If you are interested in, I can inform you about my progress. I'll do this in my free time, so no hurry. Thomas H. _______________________________________________ poppler mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/poppler
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