diff options
Diffstat (limited to 'indra/llmath/llmath.h')
| -rwxr-xr-x | indra/llmath/llmath.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/indra/llmath/llmath.h b/indra/llmath/llmath.h index a8b27ad189..b4ac1dec73 100755 --- a/indra/llmath/llmath.h +++ b/indra/llmath/llmath.h @@ -32,6 +32,7 @@ #include <vector> #include <limits> #include "lldefs.h" +#include "llerror.h" //#include "llstl.h" // *TODO: Remove when LLString is gone //#include "llstring.h" // *TODO: Remove when LLString is gone // lltut.h uses is_approx_equal_fraction(). This was moved to its own header @@ -556,6 +557,35 @@ inline void ll_remove_outliers(std::vector<VEC_TYPE>& data, F32 k) } } +inline void ll_nn2d_interpolation(const U8 *const src, U32 srcW, U32 srcH, U8 srcCh, U8 *const dst, U32 dstW, U32 dstH, U8 dstCh) +{ + llassert(srcCh>=dstCh); + + S32 tmp_x = 0, tmp_y = 0, tmp_x1 = 0, tmp_x2 = 0; + + const S32 x_r = ((srcW<<16)/dstW)+1; + const S32 y_r = ((srcH<<16)/dstH)+1; + const S32 srcW_ch = srcW*srcCh; + const S32 dstW_ch = dstW*dstCh; + + for(U32 y = 0; y < dstH; ++y) + { + tmp_y = ((y*y_r)>>16)*srcW_ch; + tmp_x1 = y*dstW_ch; + + for(U32 x = 0; x < dstW; x++) + { + tmp_x = (((x*x_r)>>16)*srcCh)+tmp_y; + tmp_x2 = tmp_x1+x*dstCh; + + for(U8 c = 0; c < dstCh; ++c) + { + dst[tmp_x2+c] = src[tmp_x+c]; + } + } + } +} + // Include simd math header #include "llsimdmath.h" |