Add unit tests to test ASTC decompression

ASTCEncoder/test/CMakeLists.txt

@@ -78,3 +78,57 @@ FOREACH(TEST ${TESTS})
   TARGET_LINK_LIBRARIES(${TEST_NAME} gtest_main)
   ADD_TEST(${TEST_NAME} ${TEST_NAME})
 ENDFOREACH()
+
+
+# Setup the test that makes sure that we don't have any
+# regressions in the ASTC decoder.
+SET(TEST_NAME Test_ASTCEncoder_Decompress)
+
+# Copy the .pvr files that we will use for testing...
+SET(TEST_IMAGES 4x4 12x12 8x8 6x5 10x8 )
+FOREACH(IMAGE ${TEST_IMAGES})
+  FILE(COPY
+    ${FasTC_SOURCE_DIR}/ASTCEncoder/test/data/mandrill_${IMAGE}.astc
+    DESTINATION ${CMAKE_BINARY_DIR}
+    USE_SOURCE_PERMISSIONS
+    )
+ENDFOREACH()
+
+FOREACH(IMAGE ${TEST_IMAGES})
+  FILE(COPY
+    ${FasTC_SOURCE_DIR}/ASTCEncoder/test/data/mandrill_decompressed_${IMAGE}.png
+    DESTINATION ${CMAKE_BINARY_DIR}
+    USE_SOURCE_PERMISSIONS
+    )
+ENDFOREACH()
+
+INCLUDE_DIRECTORIES( ${FasTC_SOURCE_DIR}/IO/include )
+INCLUDE_DIRECTORIES( ${FasTC_BINARY_DIR}/IO/include )
+INCLUDE_DIRECTORIES( ${FasTC_SOURCE_DIR}/Core/include )
+
+# HACK for MSVC 2012...
+IF(MSVC)
+  ADD_DEFINITIONS(-D_VARIADIC_MAX=10)
+ENDIF()
+
+# The cpp file to compile for the test
+ADD_EXECUTABLE(${TEST_NAME} TestASTCDecompression.cpp)
+
+# Libraries that we need...
+TARGET_LINK_LIBRARIES(${TEST_NAME} ASTCEncoder)
+TARGET_LINK_LIBRARIES(${TEST_NAME} gtest_main)
+TARGET_LINK_LIBRARIES(${TEST_NAME} FasTCBase)
+TARGET_LINK_LIBRARIES(${TEST_NAME} FasTCIO)
+TARGET_LINK_LIBRARIES(${TEST_NAME} FasTCCore)
+
+IF(MSVC)
+  ADD_TEST(${TEST_NAME}
+    ${CMAKE_COMMAND} -E chdir ${CMAKE_BINARY_DIR}
+    ${CMAKE_CURRENT_BINARY_DIR}/Debug/${TEST_NAME}
+    )
+ELSE()
+  ADD_TEST(${TEST_NAME}
+    ${CMAKE_COMMAND} -E chdir ${CMAKE_BINARY_DIR}
+    ${CMAKE_CURRENT_BINARY_DIR}/${TEST_NAME}
+    )
+ENDIF()

ASTCEncoder/test/TestASTCDecompression.cpp

@@ -0,0 +1,114 @@
+/* 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"
+
+// This is our library header
+#include "ASTCCompressor.h"
+
+#include "ImageFile.h"
+#include "Image.h"
+
+class ImageTester {
+ private:
+  static void GenerateTestFilenames(const char *suffix, char *outASTC, char *outPNG) {
+    const char *basename = "mandrill";
+    sprintf(outASTC, "%s_%s.astc", basename, suffix);
+    sprintf(outPNG, "%s_decompressed_%s.png", basename, suffix);
+  }
+
+ public:
+  explicit ImageTester(const char *suffix) {
+    char astcFilename[256];
+    char pngFilename[256];
+
+    GenerateTestFilenames(suffix, astcFilename, pngFilename);
+
+    ImageFile astc (astcFilename);
+    bool success = astc.Load();
+    EXPECT_TRUE(success);
+    if (!success) {
+      return;
+    }
+
+    ImageFile png (pngFilename);
+    success = png.Load();
+    EXPECT_TRUE(success);
+    if (!success) {
+      return;
+    }
+
+    double PSNR = astc.GetImage()->ComputePSNR(png.GetImage());
+    EXPECT_GT(PSNR, 60.0);
+  }
+};
+
+// 4x4 12x12 8x8 6x5 10x8
+TEST(Decompressor, Decompress4x4) {
+  ImageTester("4x4");
+}
+
+TEST(Decompressor, Decompress12x12) {
+  ImageTester("12x12");
+}
+
+TEST(Decompressor, Decompress8x8) {
+  ImageTester("8x8");
+}
+
+TEST(Decompressor, Decompress6x5) {
+  ImageTester("6x5");
+}
+
+TEST(Decompressor, Decompress10x8) {
+  ImageTester("10x8");
+}