FIBITMAP* DLL_CALLCONV
FreeImage_ConvertToType(FIBITMAP *src, FREE_IMAGE_TYPE dst_type, BOOL scale_linear) {
FIBITMAP *dst = NULL;
if(!FreeImage_HasPixels(src)) return NULL;
// convert from src_type to dst_type
const FREE_IMAGE_TYPE src_type = FreeImage_GetImageType(src);
if(src_type == dst_type) {
return FreeImage_Clone(src);
}
const unsigned src_bpp = FreeImage_GetBPP(src);
switch(src_type) {
case FIT_BITMAP:
switch(dst_type) {
case FIT_UINT16:
dst = FreeImage_ConvertToUINT16(src);
break;
case FIT_INT16:
dst = (src_bpp == 8) ? convertByteToShort.convert(src, dst_type) : NULL;
break;
case FIT_UINT32:
dst = (src_bpp == 8) ? convertByteToULong.convert(src, dst_type) : NULL;
break;
case FIT_INT32:
dst = (src_bpp == 8) ? convertByteToLong.convert(src, dst_type) : NULL;
break;
case FIT_FLOAT:
dst = FreeImage_ConvertToFloat(src);
break;
case FIT_DOUBLE:
dst = (src_bpp == 8) ? convertByteToDouble.convert(src, dst_type) : NULL;
break;
case FIT_COMPLEX:
dst = (src_bpp == 8) ? convertByteToComplex.convert(src) : NULL;
break;
case FIT_RGB16:
dst = FreeImage_ConvertToRGB16(src);
break;
case FIT_RGBA16:
dst = FreeImage_ConvertToRGBA16(src);
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
case FIT_RGBAF:
dst = FreeImage_ConvertToRGBAF(src);
break;
}
break;
case FIT_UINT16:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = FreeImage_ConvertToFloat(src);
break;
case FIT_DOUBLE:
dst = convertUShortToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertUShortToComplex.convert(src);
break;
case FIT_RGB16:
dst = FreeImage_ConvertToRGB16(src);
break;
case FIT_RGBA16:
dst = FreeImage_ConvertToRGBA16(src);
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
case FIT_RGBAF:
dst = FreeImage_ConvertToRGBAF(src);
break;
}
break;
case FIT_INT16:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = convertShortToFloat.convert(src, dst_type);
break;
case FIT_DOUBLE:
dst = convertShortToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertShortToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_UINT32:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = convertULongToFloat.convert(src, dst_type);
break;
case FIT_DOUBLE:
dst = convertULongToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertULongToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_INT32:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_FLOAT:
dst = convertLongToFloat.convert(src, dst_type);
break;
case FIT_DOUBLE:
dst = convertLongToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertLongToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_FLOAT:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_DOUBLE:
dst = convertFloatToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertFloatToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
case FIT_RGBAF:
dst = FreeImage_ConvertToRGBAF(src);
break;
}
break;
case FIT_DOUBLE:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
break;
case FIT_COMPLEX:
dst = convertDoubleToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_COMPLEX:
switch(dst_type) {
case FIT_BITMAP:
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
break;
case FIT_DOUBLE:
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_RGB16:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertTo24Bits(src);
break;
case FIT_UINT16:
dst = FreeImage_ConvertToUINT16(src);
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = FreeImage_ConvertToFloat(src);
break;
case FIT_DOUBLE:
break;
case FIT_COMPLEX:
break;
case FIT_RGBA16:
dst = FreeImage_ConvertToRGBA16(src);
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
case FIT_RGBAF:
dst = FreeImage_ConvertToRGBAF(src);
break;
}
break;
case FIT_RGBA16:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertTo32Bits(src);
break;
case FIT_UINT16:
dst = FreeImage_ConvertToUINT16(src);
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = FreeImage_ConvertToFloat(src);
break;
case FIT_DOUBLE:
break;
case FIT_COMPLEX:
break;
case FIT_RGB16:
dst = FreeImage_ConvertToRGB16(src);
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
case FIT_RGBAF:
dst = FreeImage_ConvertToRGBAF(src);
break;
}
break;
case FIT_RGBF:
switch(dst_type) {
case FIT_BITMAP:
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = FreeImage_ConvertToFloat(src);
break;
case FIT_DOUBLE:
break;
case FIT_COMPLEX:
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBAF:
dst = FreeImage_ConvertToRGBAF(src);
break;
}
break;
case FIT_RGBAF:
switch(dst_type) {
case FIT_BITMAP:
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = FreeImage_ConvertToFloat(src);
break;
case FIT_DOUBLE:
break;
case FIT_COMPLEX:
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
}
break;
}
if(NULL == dst) {
FreeImage_OutputMessageProc(FIF_UNKNOWN, "FREE_IMAGE_TYPE: Unable to convert from type %d to type %d.\n No such conversion exists.", src_type, dst_type);
}
return dst;
}
FIBITMAP* DLL_CALLCONV
FreeImage_ConvertToType(FIBITMAP *src, FREE_IMAGE_TYPE dst_type, BOOL scale_linear) {
FIBITMAP *dst = NULL;
if(!src) return NULL;
// convert from src_type to dst_type
const FREE_IMAGE_TYPE src_type = FreeImage_GetImageType(src);
if(src_type == dst_type) {
return FreeImage_Clone(src);
}
if(src_type == FIT_BITMAP) {
const unsigned src_bpp = FreeImage_GetBPP(src);
if(((src_bpp == 24) || (src_bpp == 32)) && (dst_type != FIT_RGBF)) {
FreeImage_OutputMessageProc(FIF_UNKNOWN, "FREE_IMAGE_TYPE: Only 24-/32-bit dib can be converted to type %d.", dst_type);
return NULL;
}
else if(src_bpp != 8) {
FreeImage_OutputMessageProc(FIF_UNKNOWN, "FREE_IMAGE_TYPE: Only 8-bit dib can be converted to type %d.", dst_type);
return NULL;
}
}
switch(src_type) {
case FIT_BITMAP:
switch(dst_type) {
case FIT_UINT16:
dst = convertByteToUShort.convert(src, dst_type);
break;
case FIT_INT16:
dst = convertByteToShort.convert(src, dst_type);
break;
case FIT_UINT32:
dst = convertByteToULong.convert(src, dst_type);
break;
case FIT_INT32:
dst = convertByteToLong.convert(src, dst_type);
break;
case FIT_FLOAT:
dst = convertByteToFloat.convert(src, dst_type);
break;
case FIT_DOUBLE:
dst = convertByteToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertByteToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
case FIT_RGBAF:
break;
}
break;
case FIT_UINT16:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = convertUShortToFloat.convert(src, dst_type);
break;
case FIT_DOUBLE:
dst = convertUShortToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertUShortToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_INT16:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = convertShortToFloat.convert(src, dst_type);
break;
case FIT_DOUBLE:
dst = convertShortToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertShortToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_UINT32:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
dst = convertULongToFloat.convert(src, dst_type);
break;
case FIT_DOUBLE:
dst = convertULongToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertULongToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_INT32:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_FLOAT:
dst = convertLongToFloat.convert(src, dst_type);
break;
case FIT_DOUBLE:
dst = convertLongToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertLongToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_FLOAT:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_DOUBLE:
dst = convertFloatToDouble.convert(src, dst_type);
break;
case FIT_COMPLEX:
dst = convertFloatToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_DOUBLE:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertToStandardType(src, scale_linear);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
break;
case FIT_COMPLEX:
dst = convertDoubleToComplex.convert(src);
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_COMPLEX:
switch(dst_type) {
case FIT_BITMAP:
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
break;
case FIT_DOUBLE:
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_RGB16:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertTo24Bits(src);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
break;
case FIT_DOUBLE:
break;
case FIT_COMPLEX:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
case FIT_RGBAF:
break;
}
break;
case FIT_RGBA16:
switch(dst_type) {
case FIT_BITMAP:
dst = FreeImage_ConvertTo32Bits(src);
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
break;
case FIT_DOUBLE:
break;
case FIT_COMPLEX:
break;
case FIT_RGB16:
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
case FIT_RGBAF:
break;
}
break;
case FIT_RGBF:
switch(dst_type) {
case FIT_BITMAP:
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
break;
case FIT_DOUBLE:
break;
case FIT_COMPLEX:
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBAF:
break;
}
break;
case FIT_RGBAF:
switch(dst_type) {
case FIT_BITMAP:
break;
case FIT_UINT16:
break;
case FIT_INT16:
break;
case FIT_UINT32:
break;
case FIT_INT32:
break;
case FIT_FLOAT:
break;
case FIT_DOUBLE:
break;
case FIT_COMPLEX:
break;
case FIT_RGB16:
break;
case FIT_RGBA16:
break;
case FIT_RGBF:
dst = FreeImage_ConvertToRGBF(src);
break;
}
break;
}
if(NULL == dst) {
FreeImage_OutputMessageProc(FIF_UNKNOWN, "FREE_IMAGE_TYPE: Unable to convert from type %d to type %d.\n No such conversion exists.", src_type, dst_type);
} else {
// copy metadata from src to dst
FreeImage_CloneMetadata(dst, src);
}
return dst;
}