pike.git
/
src
/
modules
/
Image
/
dct.c
version
»
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pike.git/src/modules/Image/dct.c:1:
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/* $Id: dct.c,v 1.
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/* $Id: dct.c,v 1.
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/* **! module Image **! note
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**! $Id: dct.c,v 1.
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**! $Id: dct.c,v 1.
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**! class Image */ #include "global.h" #include <math.h> #include <ctype.h> #include "stralloc.h" #include "global.h"
pike.git/src/modules/Image/dct.c:177:
for (u=0; u<THIS->xsize; u++) costbl[u]=cos( (2*xp+1)*u*pi/xsz2 ); for (v=0; v<THIS->ysize; v++) { z0=cos( (2*yp+1)*v*pi/ysz2 )*(v?1:c0)/4.0; for (u=0; u<THIS->xsize; u++) { double z; z = (u?1:c0) * costbl[u] * z0;
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sum.r += (float)val->r*z;
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sum.g += (float)val->g*z;
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sum.b += (float)val->b*z;
+
sum.r +=
DO_NOT_WARN
(
(
float)
(
val->r*z
))
;
+
sum.g +=
DO_NOT_WARN
(
(
float)
(
val->g*z
))
;
+
sum.b +=
DO_NOT_WARN
(
(
float)
(
val->b*z
))
;
val++; } } sum.r *= (float)enh; sum.g *= (float)enh; sum.b *= (float)enh; pix->r=testrange((DOUBLE_TO_INT(sum.r+0.5))); pix->g=testrange((DOUBLE_TO_INT(sum.g+0.5))); pix->b=testrange((DOUBLE_TO_INT(sum.b+0.5))); pix++; } fprintf(stderr,"."); fflush(stderr); } free(area); free(costbl); pop_n_elems(args); push_object(o); }