AdvaImg plugin folder renaming

git-svn-id: http://svn.miranda-ng.org/main/trunk@2801 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

1 files changed, 176 insertions, 0 deletions

diff --git a/plugins/AdvaImg/src/Metadata/FIRational.cpp b/plugins/AdvaImg/src/Metadata/FIRational.cpp
new file mode 100644
index 0000000000..d383c8d38f
--- /dev/null
+++ b/plugins/AdvaImg/src/Metadata/FIRational.cpp
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+// ==========================================================
+// Helper class for rational numbers
+//
+// Design and implementation by
+// - Hervé Drolon <drolon@infonie.fr>
+//
+// This file is part of FreeImage 3
+//
+// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
+// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
+// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
+// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
+// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
+// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
+// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
+// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+// THIS DISCLAIMER.
+//
+// Use at your own risk!
+// ==========================================================
+
+#include "FreeImage.h"
+#include "Utilities.h"
+#include "FIRational.h"
+
+/// Initialize and normalize a rational number
+void FIRational::initialize(LONG n, LONG d) {
+	if(d) {
+		_numerator = n;
+		_denominator = d;
+		// normalize rational
+		normalize();
+	} else {
+		_numerator = 0;
+		_denominator = 0;
+	}
+}
+
+/// Default constructor
+FIRational::FIRational() {
+	_numerator = 0;
+	_denominator = 0;
+}
+
+/// Constructor with longs
+FIRational::FIRational(LONG n, LONG d) {
+	initialize(n, d);
+}
+
+/// Constructor with FITAG
+FIRational::FIRational(const FITAG *tag) {
+	switch(FreeImage_GetTagType((FITAG*)tag)) {
+		case FIDT_RATIONAL:		// 64-bit unsigned fraction 
+		{
+			DWORD *pvalue = (DWORD*)FreeImage_GetTagValue((FITAG*)tag);
+			initialize((LONG)pvalue[0], (LONG)pvalue[1]);
+			break;
+		}
+
+		case FIDT_SRATIONAL:	// 64-bit signed fraction 
+		{
+			LONG *pvalue = (LONG*)FreeImage_GetTagValue((FITAG*)tag);
+			initialize((LONG)pvalue[0], (LONG)pvalue[1]);
+			break;
+		}
+	}
+}
+
+FIRational::FIRational(float value) {
+	if (value == (float)((LONG)value)) {
+	   _numerator = (LONG)value;
+	   _denominator = 1L;
+	} else {
+		int k, count;
+		LONG n[4];
+
+		float x = fabs(value);
+		int sign = (value > 0) ? 1 : -1;
+
+		// make a continued-fraction expansion of x
+		count = -1;
+		for(k = 0; k < 4; k++) {
+			n[k] = (LONG)floor(x);
+			count++;
+			x -= (float)n[k];
+			if(x == 0) break;
+			x = 1 / x;
+		}
+		// compute the rational
+		_numerator = 1;
+		_denominator = n[count];
+
+		for(int i = count - 1; i >= 0; i--) {
+			if(n[i] == 0) break;
+			LONG _num = (n[i] * _numerator + _denominator);
+			LONG _den = _numerator;
+			_numerator = _num;
+			_denominator = _den;
+		}
+		_numerator *= sign;
+	}
+}
+
+/// Copy constructor
+FIRational::FIRational (const FIRational& r) {
+	initialize(r._numerator, r._denominator);
+}
+
+/// Destructor
+FIRational::~FIRational() {
+}
+
+/// Assignement operator
+FIRational& FIRational::operator=(FIRational& r) {
+	if(this != &r) {
+		initialize(r._numerator, r._denominator);
+	}
+	return *this;
+}
+
+/// Get the numerator
+LONG FIRational::getNumerator() {
+	return _numerator;
+}
+
+/// Get the denominator
+LONG FIRational::getDenominator() {
+	return _denominator;
+}
+
+/// Calculate GCD
+LONG FIRational::gcd(LONG a, LONG b) {
+	LONG temp;
+	while (b) {		// While non-zero value
+		temp = b;	// Save current value
+		b = a % b;	// Assign remainder of division
+		a = temp;	// Copy old value
+	}
+	return a;		// Return GCD of numbers
+}
+
+/// Normalize numerator / denominator 
+void FIRational::normalize() {
+	if (_numerator != 1 && _denominator != 1) {	// Is there something to do?
+		 // Calculate GCD
+		LONG common = gcd(_numerator, _denominator);
+		if (common != 1) { // If GCD is not one			
+			_numerator /= common;	// Calculate new numerator
+			_denominator /= common;	// Calculate new denominator
+		}
+	}
+	if(_denominator < 0) {	// If sign is in denominator
+		_numerator *= -1;	// Multiply num and den by -1
+		_denominator *= -1;	// To keep sign in numerator
+	}
+}
+
+/// Checks if this rational number is an Integer, either positive or negative
+BOOL FIRational::isInteger() {
+	if(_denominator == 1 || (_denominator != 0 && (_numerator % _denominator == 0)) || (_denominator == 0 && _numerator == 0))
+		return TRUE;
+	return FALSE;
+}
+
+/// Convert as "numerator/denominator"
+std::string FIRational::toString() {
+	std::ostringstream s;
+	if(isInteger()) {
+		s << intValue();
+	} else {
+		s << _numerator << "/" << _denominator;
+	}
+	return s.str();
+}
+
+