Add block tests

PVRTCEncoder/src/Pixel.h

@@ -99,6 +99,12 @@ class Pixel {
   const uint8 &Component(uint32 idx) const { return m_Component[idx]; }
   uint8 &Component(uint32 idx) { return m_Component[idx]; }
 
+  void GetBitDepth(uint8 (&outDepth)[4]) const {
+    for(int i = 0; i < 4; i++) {
+      outDepth[i] = m_BitDepth[i];
+    }
+  }
+
   uint32 PackRGBA() const {
     uint32 r = 0;
     r |= m_A;

PVRTCEncoder/test/BlockTest.cpp

@@ -0,0 +1,187 @@
+/* FasTC
+ * Copyright (c) 2013 University of North Carolina at Chapel Hill.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for educational, research, and non-profit purposes, without
+ * fee, and without a written agreement is hereby granted, provided that the
+ * above copyright notice, this paragraph, and the following four paragraphs
+ * appear in all copies.
+ *
+ * Permission to incorporate this software into commercial products may be
+ * obtained by contacting the authors or the Office of Technology Development
+ * at the University of North Carolina at Chapel Hill <otd@unc.edu>.
+ *
+ * This software program and documentation are copyrighted by the University of
+ * North Carolina at Chapel Hill. The software program and documentation are
+ * supplied "as is," without any accompanying services from the University of
+ * North Carolina at Chapel Hill or the authors. The University of North
+ * Carolina at Chapel Hill and the authors do not warrant that the operation of
+ * the program will be uninterrupted or error-free. The end-user understands
+ * that the program was developed for research purposes and is advised not to
+ * rely exclusively on the program for any reason.
+ *
+ * IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
+ * AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
+ * OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
+ * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
+ * AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
+ * DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY 
+ * STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
+ * AN "AS IS" BASIS, AND THE UNIVERSITY  OF NORTH CAROLINA AT CHAPEL HILL AND
+ * THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, 
+ * ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Please send all BUG REPORTS to <pavel@cs.unc.edu>.
+ *
+ * The authors may be contacted via:
+ *
+ * Pavel Krajcevski
+ * Dept of Computer Science
+ * 201 S Columbia St
+ * Frederick P. Brooks, Jr. Computer Science Bldg
+ * Chapel Hill, NC 27599-3175
+ * USA
+ * 
+ * <http://gamma.cs.unc.edu/FasTC/>
+ */
+
+#include "gtest/gtest.h"
+#include "Block.h"
+
+TEST(Block, ConstructorFromBytes) {
+  const uint8 data[8] = { 0 };
+  PVRTCC::Block b (data);
+  EXPECT_FALSE(b.GetModeBit());
+}
+
+TEST(Block, CopyConstructor) {
+  const uint8 data[8] = { 0, 0, 0, 0, 0xAA, 0xAA, 0xAA, 0xAA };
+  PVRTCC::Block b (data);
+  PVRTCC::Block b2 (b);
+  for(int i = 0; i < 16; i++) {
+    EXPECT_EQ(b2.GetLerpValue(i), 0x2);
+  }
+}
+
+TEST(Block, GetColorA) {
+
+  // Test a 555 opaque block
+  uint8 data[8] = { 0x96, 0x8A, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 };
+  PVRTCC::Block b(data);
+  PVRTCC::Pixel p = b.GetColorA();
+  EXPECT_EQ(p.A(), 255);
+  EXPECT_EQ(p.R(), 5);
+  EXPECT_EQ(p.G(), 20);
+  EXPECT_EQ(p.B(), 10);
+
+  uint8 depth[4];
+  p.GetBitDepth(depth);
+  for(int i = 0; i < 4; i++) {
+    if(i == 0) {
+      EXPECT_EQ(depth[i], 0);
+    } else {
+      EXPECT_EQ(depth[i], 5);
+    }
+  }
+
+  // Test a 3444 transparent block
+  data[0] = 0x16;
+  b = PVRTCC::Block(data);
+  p = b.GetColorA();
+  EXPECT_EQ(p.A(), 1);
+  EXPECT_EQ(p.R(), 6);
+  EXPECT_EQ(p.G(), 8);
+  EXPECT_EQ(p.B(), 10);
+
+  p.GetBitDepth(depth);
+  for(int i = 0; i < 4; i++) {
+    if(i == 0) {
+      EXPECT_EQ(depth[i], 3);
+    } else {
+      EXPECT_EQ(depth[i], 4);
+    }
+  }
+}
+
+TEST(Block, GetColorB) {
+
+  // Test a 554 opaque block
+  uint8 data[8] = { 0x0, 0x0, 0x96, 0x8A, 0x0, 0x0, 0x0, 0x0 };
+  PVRTCC::Block b(data);
+  PVRTCC::Pixel p = b.GetColorB();
+  EXPECT_EQ(p.A(), 255);
+  EXPECT_EQ(p.R(), 5);
+  EXPECT_EQ(p.G(), 20);
+  EXPECT_EQ(p.B(), 5);
+
+  uint8 depth[4];
+  p.GetBitDepth(depth);
+  for(int i = 0; i < 4; i++) {
+    if(i == 0) {
+      EXPECT_EQ(depth[i], 0);
+    } else if(i == 3) {
+      EXPECT_EQ(depth[i], 4);
+    } else {
+      EXPECT_EQ(depth[i], 5);
+    }
+  }
+
+  // Test a 3443 transparent block
+  data[2] = 0x16;
+  b = PVRTCC::Block(data);
+  p = b.GetColorB();
+  EXPECT_EQ(p.A(), 1);
+  EXPECT_EQ(p.R(), 6);
+  EXPECT_EQ(p.G(), 8);
+  EXPECT_EQ(p.B(), 5);
+
+  p.GetBitDepth(depth);
+  for(int i = 0; i < 4; i++) {
+    if(i == 0 || i == 3) {
+      EXPECT_EQ(depth[i], 3);
+    } else {
+      EXPECT_EQ(depth[i], 4);
+    }
+  }
+}
+
+TEST(Block, GetModeBit) {
+  const uint8 modeData[8] = { 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0 };
+  const uint8 noModeData[8] = { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 };
+
+  PVRTCC::Block b (modeData);
+  EXPECT_TRUE(b.GetModeBit());
+
+  b = PVRTCC::Block(noModeData);
+  EXPECT_FALSE(b.GetModeBit());
+}
+
+TEST(Block, GetLerpValue) {
+  const uint8 data[8] = { 0x0, 0x0, 0x0, 0x0, 0x1B, 0xE4, 0x27, 0xD8 };
+  PVRTCC::Block b(data);
+
+  EXPECT_EQ(b.GetLerpValue(0), 0);
+  EXPECT_EQ(b.GetLerpValue(1), 2);
+  EXPECT_EQ(b.GetLerpValue(2), 1);
+  EXPECT_EQ(b.GetLerpValue(3), 3);
+
+  EXPECT_EQ(b.GetLerpValue(4), 3);
+  EXPECT_EQ(b.GetLerpValue(5), 1);
+  EXPECT_EQ(b.GetLerpValue(6), 2);
+  EXPECT_EQ(b.GetLerpValue(7), 0);
+
+  EXPECT_EQ(b.GetLerpValue(8), 0);
+  EXPECT_EQ(b.GetLerpValue(9), 1);
+  EXPECT_EQ(b.GetLerpValue(10), 2);
+  EXPECT_EQ(b.GetLerpValue(11), 3);
+
+  EXPECT_EQ(b.GetLerpValue(12), 3);
+  EXPECT_EQ(b.GetLerpValue(13), 2);
+  EXPECT_EQ(b.GetLerpValue(14), 1);
+  EXPECT_EQ(b.GetLerpValue(15), 0);
+}

PVRTCEncoder/test/CMakeLists.txt

@@ -0,0 +1,70 @@
+# FasTC
+# Copyright (c) 2013 University of North Carolina at Chapel Hill.
+# All rights reserved.
+#
+# Permission to use, copy, modify, and distribute this software and its
+# documentation for educational, research, and non-profit purposes, without
+# fee, and without a written agreement is hereby granted, provided that the
+# above copyright notice, this paragraph, and the following four paragraphs
+# appear in all copies.
+#
+# Permission to incorporate this software into commercial products may be
+# obtained by contacting the authors or the Office of Technology Development
+# at the University of North Carolina at Chapel Hill <otd@unc.edu>.
+#
+# This software program and documentation are copyrighted by the University of
+# North Carolina at Chapel Hill. The software program and documentation are
+# supplied "as is," without any accompanying services from the University of
+# North Carolina at Chapel Hill or the authors. The University of North
+# Carolina at Chapel Hill and the authors do not warrant that the operation of
+# the program will be uninterrupted or error-free. The end-user understands
+# that the program was developed for research purposes and is advised not to
+# rely exclusively on the program for any reason.
+#
+# IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
+# AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
+# OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
+# THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
+# AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
+# DAMAGE.
+#
+# THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
+# DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY 
+# STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
+# AN "AS IS" BASIS, AND THE UNIVERSITY  OF NORTH CAROLINA AT CHAPEL HILL AND
+# THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, 
+# ENHANCEMENTS, OR MODIFICATIONS.
+#
+# Please send all BUG REPORTS to <pavel@cs.unc.edu>.
+#
+# The authors may be contacted via:
+#
+# Pavel Krajcevski
+# Dept of Computer Science
+# 201 S Columbia St
+# Frederick P. Brooks, Jr. Computer Science Bldg
+# Chapel Hill, NC 27599-3175
+# USA
+# 
+# <http://gamma.cs.unc.edu/FasTC/>
+
+INCLUDE_DIRECTORIES(${FasTC_SOURCE_DIR}/Core/include)
+
+INCLUDE_DIRECTORIES(${FasTC_SOURCE_DIR}/PVRTCEncoder/include)
+INCLUDE_DIRECTORIES(${FasTC_SOURCE_DIR}/PVRTCEncoder/src)
+
+INCLUDE_DIRECTORIES(${FasTC_SOURCE_DIR}/GTest/include)
+
+SET(TESTS
+  Block
+)
+
+FOREACH(TEST ${TESTS})
+  SET(TEST ${TEST}Test)
+  ADD_EXECUTABLE(${TEST} ${TEST}.cpp)
+  TARGET_LINK_LIBRARIES(${TEST} PVRTCEncoder)
+  TARGET_LINK_LIBRARIES(${TEST} gtest_main)
+  ADD_TEST(${TEST} ${TEST})
+ENDFOREACH()
+