[fuse-emulator-devel] [ fuse-emulator-Patches-1952304 ] HQ2x and HQ3x scalers

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Patches item #1952304, was opened at 2008-04-26 14:34
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Gergely Szasz (szaszg)
Assigned to: Nobody/Anonymous (nobody)
Summary: HQ2x and HQ3x scalers

Initial Comment:
Here is a patch to implement Maxim Stepin's HQ filters
I drop the switch(){...} parts of the code into separated files (scalers_hq2x.c and scalers_hq3x.c) because its size (41kB and 64kB)...

I drop
 - the RGB->YUV and RGB16->RGB24 lookup tables
 - start and end line/column check
from the original code, and make some caching of the calculated Y, U, and V values.

The changed code produces the same scaling as the demo exe, (I checked the start screen of 128k with HQ2x).
Only the four quarter pixel has a little bit different value.

I test with the GTk, X11 and SDL UI. A BE machine check should be great (Fred?).

In the screenshot.c I add the PALTV filters too...
In the ui/gtk/Makefile.am I add the absend @LIBSPEC_CFLAGS@


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