diff options
Diffstat (limited to '2xsai.cpp')
| -rw-r--r-- | 2xsai.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
@@ -731,3 +731,33 @@ void Scale_2xSaI(uint8 *srcPtr, uint32 srcPitch, uint8 * /* deltaPtr */ , dstPtr += dstPitch; } } + +void AdvMame2x(uint8 *srcPtr, uint32 srcPitch, uint8 *null, uint8 *dstPtr, uint32 dstPitch, int width, int height) +{ + unsigned int nextlineSrc = srcPitch / sizeof(short); + short* p = (short*)srcPtr; + + unsigned nextlineDst = dstPitch / sizeof(short); + short* q = (short*)dstPtr; + + for(int j = 0; j < height; ++j) { + for(int i = 0; i < width; ++i) { + short A = *(p + i - nextlineSrc - 1); + short B = *(p + i - nextlineSrc); + short C = *(p + i - nextlineSrc + 1); + short D = *(p + i - 1); + short E = *(p + i ); + short F = *(p + i + 1); + short G = *(p + i + nextlineSrc - 1); + short H = *(p + i + nextlineSrc); + short I = *(p + i + nextlineSrc + 1); + + *(q + (i << 1)) = D == B && B != F && D != H ? D : E; + *(q + (i << 1) + 1) = B == F && B != D && F != H ? F : E; + *(q + (i << 1) + nextlineDst) = D == H && D != B && H != F ? D : E; + *(q + (i << 1) + nextlineDst + 1) = H == F && D != H && B != F ? F : E; + } + p += nextlineSrc; + q += nextlineDst << 1; + } +} |