Updated FLANN to version 1.5

modules/flann/src/flann.cpp

@@ -0,0 +1,222 @@
+/***********************************************************************
+ * Software License Agreement (BSD License)
+ *
+ * Copyright 2008-2009  Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
+ * Copyright 2008-2009  David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *************************************************************************/
+
+#include <cstdio>
+#include <cstdarg>
+#include <sstream>
+
+#include "opencv2/flann/dist.h"
+#include "opencv2/flann/index_testing.h"
+#include "opencv2/flann/logger.h"
+#include "opencv2/flann/logger.h"
+#include "opencv2/flann/saving.h"
+#include "opencv2/flann/general.h"
+
+// index types
+#include "opencv2/flann/all_indices.h"
+
+namespace cvflann
+{
+// ----------------------- dist.cpp ---------------------------
+
+/** Global variable indicating the distance metric
+ * to be used.
+ */
+flann_distance_t flann_distance_type = EUCLIDEAN;
+
+/**
+ * Zero iterator that emulates a zero feature.
+ */
+ZeroIterator<float> zero;
+
+/**
+ * Order of Minkowski distance to use.
+ */
+int flann_minkowski_order;
+
+
+double euclidean_dist(const unsigned char* first1, const unsigned char* last1, unsigned char* first2, double acc)
+{
+	double distsq = acc;
+	double diff0, diff1, diff2, diff3;
+	const unsigned char* lastgroup = last1 - 3;
+
+	while (first1 < lastgroup) {
+		diff0 = first1[0] - first2[0];
+		diff1 = first1[1] - first2[1];
+		diff2 = first1[2] - first2[2];
+		diff3 = first1[3] - first2[3];
+		distsq += diff0 * diff0 + diff1 * diff1 + diff2 * diff2 + diff3 * diff3;
+		first1 += 4;
+		first2 += 4;
+	}
+	while (first1 < last1) {
+		diff0 = *first1++ - *first2++;
+		distsq += diff0 * diff0;
+	}
+	return distsq;
+}
+
+// ----------------------- index_testing.cpp ---------------------------
+
+int countCorrectMatches(int* neighbors, int* groundTruth, int n)
+{
+    int count = 0;
+    for (int i=0;i<n;++i) {
+        for (int k=0;k<n;++k) {
+            if (neighbors[i]==groundTruth[k]) {
+                count++;
+                break;
+            }
+        }
+    }
+    return count;
+}
+
+// ----------------------- logger.cpp ---------------------------
+
+Logger logger;
+
+int Logger::log(int level, const char* fmt, ...)
+{
+    if (level > logLevel ) return -1;
+
+    int ret;
+    va_list arglist;
+    va_start(arglist, fmt);
+    ret = vfprintf(stream, fmt, arglist);
+    va_end(arglist);
+
+    return ret;
+}
+
+int Logger::log(int level, const char* fmt, va_list arglist)
+{
+    if (level > logLevel ) return -1;
+
+    int ret;
+    ret = vfprintf(stream, fmt, arglist);
+
+    return ret;
+}
+
+
+#define LOG_METHOD(NAME,LEVEL) \
+    int Logger::NAME(const char* fmt, ...) \
+    { \
+        int ret; \
+        va_list ap; \
+        va_start(ap, fmt); \
+        ret = log(LEVEL, fmt, ap); \
+        va_end(ap); \
+        return ret; \
+    }
+
+
+LOG_METHOD(fatal, LOG_FATAL)
+LOG_METHOD(error, LOG_ERROR)
+LOG_METHOD(warn, LOG_WARN)
+LOG_METHOD(info, LOG_INFO)
+
+// ----------------------- random.cpp ---------------------------
+
+void seed_random(unsigned int seed)
+{
+    srand(seed);
+}
+
+double rand_double(double high, double low)
+{
+    return low + ((high-low) * (std::rand() / (RAND_MAX + 1.0)));
+}
+
+
+int rand_int(int high, int low)
+{
+    return low + (int) ( double(high-low) * (std::rand() / (RAND_MAX + 1.0)));
+}
+
+// ----------------------- saving.cpp ---------------------------
+
+const char FLANN_SIGNATURE[] = "FLANN_INDEX";
+const char FLANN_VERSION[] = "1.5.0";
+
+
+IndexHeader load_header(FILE* stream)
+{
+	IndexHeader header;
+	int read_size = fread(&header,sizeof(header),1,stream);
+
+	if (read_size!=1) {
+		throw FLANNException("Invalid index file, cannot read");
+	}
+
+	if (strcmp(header.signature,FLANN_SIGNATURE)!=0) {
+		throw FLANNException("Invalid index file, wrong signature");
+	}
+
+	return header;
+
+}
+
+// ----------------------- flann.cpp ---------------------------
+
+
+void log_verbosity(int level)
+{
+    if (level>=0) {
+        logger.setLevel(level);
+    }
+}
+
+void set_distance_type(flann_distance_t distance_type, int order)
+{
+	flann_distance_type = distance_type;
+	flann_minkowski_order = order;
+}
+
+class StaticInit
+{
+public:
+	StaticInit()
+	{
+		ParamsFactory::instance().register_<LinearIndexParams>(LINEAR);
+		ParamsFactory::instance().register_<KDTreeIndexParams>(KDTREE);
+		ParamsFactory::instance().register_<KMeansIndexParams>(KMEANS);
+		ParamsFactory::instance().register_<CompositeIndexParams>(COMPOSITE);
+		ParamsFactory::instance().register_<AutotunedIndexParams>(AUTOTUNED);
+//		ParamsFactory::instance().register_<SavedIndexParams>(SAVED);
+	}
+};
+StaticInit __init;
+
+
+} // namespace cvflann
+
+
+