[cairo] Implementing cairo_read_func_t/cairo_write_func_t properly
Enrico Weigelt, metux IT consult
enrico.weigelt at gr13.net
Sat Jan 2 03:27:40 PST 2016
On 02.01.2016 11:24, Bernhard Fischer wrote:
Actually, I really wonder what that stream API is really for.
Why not just let everything operate on an fd or directly mmap()
the whole file ?
Instead I'd rather add some callbacks to the image surface, eg. for
example for releasing or duplicating the raw image data. There're
lots of interesting usecases for that, for example:
* allocate image surfaces directly on an BO (or similar buffers on
* zero-copy initialization from already loaded pixmap data, etc.
* pixmap buffer sharing with other code (outside cairo itself)
By the way, I'm currently doing a bit research on using programmable
DMA controllers for buffer-copying, image composition, etc.
metux IT consulting
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