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Re: (Guile-SDL) Feature request - Access pixels of a surface
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From: |
Thien-Thi Nguyen |
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Subject: |
Re: (Guile-SDL) Feature request - Access pixels of a surface |
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Date: |
Sat, 01 Jun 2013 01:09:13 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux) |
() David Thompson <address@hidden>
() Thu, 30 May 2013 21:29:17 -0400
Currently there is no way to access the pixels member of the
SDL_Surface struct. It would be useful to have this data available as
a bytevector. I considered hacking this myself, but there are no
pre-existing macros that I could find to deal with bytevectors, and
I'm not comfortable enough with the codebase to add my own macros.
What is the best way to implement this feature?
That depends on what "access" means precisely. Some considerations:
- read-only vs read-write vs write-only
- direct read or copy-out
- locking
- liveness of surface SMOB
What do you think about SRFI 4 u8vector? I like them because they are
available also for older Guile versions (pre 2.x).
--
Thien-Thi Nguyen
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