1 files changed, 132 insertions, 0 deletions

diff --git a/libraries/openjpeg-libsl/libopenjpeg/mct.c b/libraries/openjpeg-libsl/libopenjpeg/mct.c
new file mode 100644
index 0000000..fad9355
--- /dev/null
+++ b/libraries/openjpeg-libsl/libopenjpeg/mct.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2007, Professor Benoit Macq
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
+ * 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 COPYRIGHT HOLDERS AND CONTRIBUTORS `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 COPYRIGHT OWNER OR CONTRIBUTORS 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 "opj_includes.h"
+
+/* <summary> */
+/* This table contains the norms of the basis function of the reversible MCT. */
+/* </summary> */
+static const double mct_norms[3] = { 1.732, .8292, .8292 };
+
+/* <summary> */
+/* This table contains the norms of the basis function of the irreversible MCT. */
+/* </summary> */
+static const double mct_norms_real[3] = { 1.732, 1.805, 1.573 };
+
+/* <summary> */
+/* Foward reversible MCT. */
+/* </summary> */
+void mct_encode(int *c0, int *c1, int *c2, int n) {
+        int i;
+        for (i = 0; i < n; i++) {
+                int r, g, b, y, u, v;
+                r = c0[i];
+                g = c1[i];
+                b = c2[i];
+                y = (r + (g << 1) + b) >> 2;
+                u = b - g;
+                v = r - g;
+                c0[i] = y;
+                c1[i] = u;
+                c2[i] = v;
+        }
+}
+
+/* <summary> */
+/* Inverse reversible MCT. */
+/* </summary> */
+void mct_decode(int *c0, int *c1, int *c2, int n) {
+        int i;
+        for (i = 0; i < n; i++) {
+                int y, u, v, r, g, b;
+                y = c0[i];
+                u = c1[i];
+                v = c2[i];
+                g = y - ((u + v) >> 2);
+                r = v + g;
+                b = u + g;
+                c0[i] = r;
+                c1[i] = g;
+                c2[i] = b;
+        }
+}
+
+/* <summary> */
+/* Get norm of basis function of reversible MCT. */
+/* </summary> */
+double mct_getnorm(int compno) {
+        return mct_norms[compno];
+}
+
+/* <summary> */
+/* Foward irreversible MCT. */
+/* </summary> */
+void mct_encode_real(int *c0, int *c1, int *c2, int n) {
+        int i;
+        for (i = 0; i < n; i++) {
+                int r, g, b, y, u, v;
+                r = c0[i];
+                g = c1[i];
+                b = c2[i];
+                y = fix_mul(r, 2449) + fix_mul(g, 4809) + fix_mul(b, 934);
+                u = -fix_mul(r, 1382) - fix_mul(g, 2714) + fix_mul(b, 4096);
+                v = fix_mul(r, 4096) - fix_mul(g, 3430) - fix_mul(b, 666);
+                c0[i] = y;
+                c1[i] = u;
+                c2[i] = v;
+        }
+}
+
+/* <summary> */
+/* Inverse irreversible MCT. */
+/* </summary> */
+void mct_decode_real(int *c0, int *c1, int *c2, int n) {
+        int i;
+        for (i = 0; i < n; i++) {
+                int y, u, v, r, g, b;
+                y = c0[i];
+                u = c1[i];
+                v = c2[i];
+                r = y + fix_mul(v, 11485);
+                g = y - fix_mul(u, 2819) - fix_mul(v, 5850);
+                b = y + fix_mul(u, 14516);
+                c0[i] = r;
+                c1[i] = g;
+                c2[i] = b;
+        }
+}
+
+/* <summary> */
+/* Get norm of basis function of irreversible MCT. */
+/* </summary> */
+double mct_getnorm_real(int compno) {
+        return mct_norms_real[compno];
+}