int DLL_CALLCONV
FIA_ReplaceColourPlanes (FIBITMAP **src, FIBITMAP *R, FIBITMAP *G, FIBITMAP *B)
{
if (FreeImage_HasPixels(R) && FIA_Is8Bit(R)) {
if (*src==NULL)
*src = FreeImage_Allocate (FreeImage_GetWidth(R), FreeImage_GetHeight(R), 24);
FIA_SetGreyLevelPalette (R);
FreeImage_SetChannel(*src, R, FICC_RED);
}
if (FreeImage_HasPixels(G) && FIA_Is8Bit(G)) {
if (*src==NULL)
*src = FreeImage_Allocate (FreeImage_GetWidth(G), FreeImage_GetHeight(G), 24);
FIA_SetGreyLevelPalette (G);
FreeImage_SetChannel(*src, G, FICC_GREEN);
}
if (FreeImage_HasPixels(B) && FIA_Is8Bit(B)) {
if (*src==NULL)
*src = FreeImage_Allocate (FreeImage_GetWidth(B), FreeImage_GetHeight(B), 24);
FIA_SetGreyLevelPalette (B);
FreeImage_SetChannel(*src, B, FICC_BLUE);
}
return FIA_SUCCESS;
}
int DLL_CALLCONV
FIA_ReplaceColourPlanesHSV (FIBITMAP **src, FIBITMAP *H, FIBITMAP *S, FIBITMAP *V)
{
// HSV source images must all be the same size
FIBITMAP *R=NULL, *G=NULL, *B=NULL;
int x, y;
double h, s, v;
// Check we have valid images
if (!FreeImage_HasPixels(H) || !FIA_Is8Bit(H) ||
!FreeImage_HasPixels(S) || !FIA_Is8Bit(S) ||
!FreeImage_HasPixels(V) || !FIA_Is8Bit(V)) {
return FIA_ERROR;
}
// alloc RGB to something the same size as the source images
R = FreeImage_Clone(H);
G = FreeImage_Clone(H);
B = FreeImage_Clone(H);
// Convert the HSV values to RGB and store
for(y = 0; y < FreeImage_GetHeight(H); y++) {
BYTE *src_h = FreeImage_GetScanLine(H, y);
BYTE *src_s = FreeImage_GetScanLine(S, y);
BYTE *src_v = FreeImage_GetScanLine(V, y);
BYTE *dst_r = FreeImage_GetScanLine(R, y);
BYTE *dst_g = FreeImage_GetScanLine(G, y);
BYTE *dst_b = FreeImage_GetScanLine(B, y);
for(x = 0; x < FreeImage_GetWidth(H); x++) {
// Red, Green and Blue are between 0 and 255
// Hue varies between 0 and 360
// Satuation between 0 and 1
// Value between 0 and 1
h = ((double)(*src_h))/255.0 * 360.0;
s = ((double)(*src_s))/255.0;
v = ((double)(*src_v))/255.0;
FIA_HSVToRGB (h, s, v, dst_r, dst_g, dst_b);
// jump to next pixel
src_h ++;
src_s ++;
src_v ++;
dst_r ++;
dst_g ++;
dst_b ++;
}
}
FIA_ReplaceColourPlanes (src, R, G, B);
FreeImage_Unload(R);
FreeImage_Unload(G);
FreeImage_Unload(B);
return FIA_SUCCESS;
}
