add b44ExpLogTable.h and dwaLookups.h as official headers

- remove auto-generation of the header tables
- add test to IlmImfTest to validate the headers

Signed-off-by: Cary Phillips <cary@ilm.com>

.gitignore

@@ -29,8 +29,6 @@ OpenEXR/IlmImfTest/IlmImfTest
 OpenEXR/IlmImfUtilTest/IlmImfUtilTest
 OpenEXR/IlmImfFuzzTest/IlmImfFuzzTest
 Contrib/DtexToExr/DtexToExr
-b44ExpLogTable.h
-dwaLookups.h
 .deps
 *.o
 *.lo

OpenEXR/IlmImf/CMakeLists.txt

@@ -1,37 +1,12 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright Contributors to the OpenEXR Project.
 
-add_executable(b44ExpLogTable b44ExpLogTable.cpp)
-target_link_libraries(b44ExpLogTable PRIVATE OpenEXR::Config IlmBase::Half IlmBase::IlmThread IlmBase::Iex)
-set_target_properties(b44ExpLogTable PROPERTIES
-  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
-)
-# TODO: Old file had logic to skip these if the file already exists
-add_custom_command(
-  OUTPUT  ${CMAKE_CURRENT_BINARY_DIR}/b44ExpLogTable.h
-  COMMAND $<TARGET_FILE:b44ExpLogTable> > ${CMAKE_CURRENT_BINARY_DIR}/b44ExpLogTable.h
-  DEPENDS b44ExpLogTable
-)
-
-
-add_executable(dwaLookups dwaLookups.cpp)
-target_link_libraries(dwaLookups PRIVATE OpenEXR::Config IlmBase::Imath IlmBase::Half IlmBase::IlmThread IlmBase::Iex)
-set_target_properties(dwaLookups PROPERTIES
-  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
-)
-# TODO: Old file had logic to skip these if the file already exists
-add_custom_command(
-  OUTPUT  ${CMAKE_CURRENT_BINARY_DIR}/dwaLookups.h
-  COMMAND $<TARGET_FILE:dwaLookups> > ${CMAKE_CURRENT_BINARY_DIR}/dwaLookups.h
-  DEPENDS dwaLookups
-)
-
 openexr_define_library(IlmImf
   PRIV_EXPORT ILMIMF_EXPORTS
   CURDIR ${CMAKE_CURRENT_SOURCE_DIR}
   SOURCES
-    ${CMAKE_CURRENT_BINARY_DIR}/b44ExpLogTable.h
-    ${CMAKE_CURRENT_BINARY_DIR}/dwaLookups.h
+    b44ExpLogTable.h
+    dwaLookups.h
     ImfAttribute.cpp
     ImfBoxAttribute.cpp
     ImfCRgbaFile.cpp

OpenEXR/IlmImf/Makefile.am

@@ -167,7 +167,11 @@ libIlmImfinclude_HEADERS = ImfForward.h ImfAttribute.h ImfBoxAttribute.h \
 			   ImfNamespace.h ImfForward.h ImfExport.h \
 			   ImfPartHelper.h \
 			   ImfDeepImageState.h \
-			   ImfDeepImageStateAttribute.h
+			   ImfDeepImageStateAttribute.h \
+		           ImfSystemSpecific.h    \
+	 		   ImfOptimizedPixelReading.h \
+		           b44ExpLogTable.h \
+                           dwaLookups.h 
 
 noinst_HEADERS = ImfCompressor.h    \
 		 ImfRleCompressor.h \
@@ -185,33 +189,17 @@ noinst_HEADERS = ImfCompressor.h    \
 		 ImfOutputStreamMutex.h \
 		 ImfInputPartData.h     \
 		 ImfOutputPartData.h    \
-		 ImfScanLineInputFile.h \
 		 ImfSystemSpecific.h    \
-		 ImfOptimizedPixelReading.h
+		 ImfOptimizedPixelReading.h \
+		 b44ExpLogTable.h \
+                 dwaLookups.h 
 
 
-EXTRA_DIST = $(noinst_HEADERS) b44ExpLogTable.cpp b44ExpLogTable.h dwaLookups.cpp dwaLookups.h CMakeLists.txt
+EXTRA_DIST = $(noinst_HEADERS) CMakeLists.txt
 
 
 AM_CPPFLAGS = @ILMBASE_CXXFLAGS@ \
 	   -I$(top_builddir) \
 	   -I$(top_srcdir)/config \
 	   $(ILMBASE_CFLAGS) $(ZLIB_CFLAGS)
 
-CLEANFILES = b44ExpLogTable b44ExpLogTable.h dwaLookups dwaLookups.h
-
-b44ExpLogTable_SOURCES = b44ExpLogTable.cpp
-b44ExpLogTable_LDADD = @ILMBASE_LDFLAGS@ $(ILMBASE_LIBS)
-
-b44ExpLogTable.h: b44ExpLogTable
-	./b44ExpLogTable > b44ExpLogTable.h
-
-dwaLookups_SOURCES = dwaLookups.cpp
-dwaLookups_LDADD = @ILMBASE_LDFLAGS@ $(ILMBASE_LIBS)
-
-dwaLookups.h: dwaLookups
-	./dwaLookups > dwaLookups.h
-
-BUILT_SOURCES = b44ExpLogTable.h dwaLookups.h
-
-noinst_PROGRAMS = b44ExpLogTable dwaLookups

OpenEXR/IlmImfTest/CMakeLists.txt

@@ -60,6 +60,8 @@ add_executable(IlmImfTest
   testXdr.cpp
   testYca.cpp
   testLargeDataWindowOffsets.cpp
+  testB44ExpLogTable.cpp
+  testDwaLookups.cpp
   random.cpp
 )
 target_compile_definitions(IlmImfTest PRIVATE ILM_IMF_TEST_IMAGEDIR="${CMAKE_CURRENT_SOURCE_DIR}/")

OpenEXR/IlmImfTest/Makefile.am

@@ -56,8 +56,10 @@ IlmImfTest_SOURCES = main.cpp tmpDir.h testAttributes.cpp testChannels.cpp \
 		     testFutureProofing.cpp testFutureProofing.h \
 	             compareDwa.cpp compareDwa.h \
 	             testDwaCompressorSimd.cpp testDwaCompressorSimd.h \
-  	             testLargeDataWindowOffsets.cpp testLargeDataWindowOffsets.h \
+	             testLargeDataWindowOffsets.cpp testLargeDataWindowOffsets.h \
 	             testRle.cpp testRle.h \
+	             testB44ExpLogTable.cpp testB44ExpLogTable.h \
+	             testDwaLookups.cpp testDwaLookups.h \
 		     bswap_32.h
 
 AM_CPPFLAGS = -DILM_IMF_TEST_IMAGEDIR=\"$(srcdir)/\"

OpenEXR/IlmImfTest/main.cpp

@@ -93,6 +93,8 @@
 #include "testPartHelper.h"
 #include "testDwaCompressorSimd.h"
 #include "testRle.h"
+#include "testB44ExpLogTable.h"
+#include "testDwaLookups.h"
 
 #include "tmpDir.h"
 #include "ImathRandom.h"
@@ -222,7 +224,9 @@ main (int argc, char *argv[])
     TEST (testFutureProofing, "core");
     TEST (testDwaCompressorSimd, "basic");
     TEST (testRle, "core");
-
+    TEST (testB44ExpLogTable, "core");
+    TEST (testDwaLookups, "core");
+
 
     //#ifdef ENABLE_IMFHUGETEST
     // defined via configure with --enable-imfhugetest=yes/no

OpenEXR/IlmImfTest/testB44ExpLogTable.cpp

@@ -0,0 +1,55 @@
+//
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+//
+
+#include <ImfNamespace.h>
+#include <half.h>
+#include <math.h>
+#include <iostream>
+#include <iomanip>
+#include <assert.h>
+
+using namespace std;
+
+
+OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER
+
+extern const unsigned short expTable[];
+extern const unsigned short logTable[];
+
+OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
+
+void
+testB44ExpLogTable (const string&)
+{
+    const int iMax = (1 << 16);
+
+    for (int i = 0; i < iMax; i++)
+    {
+	half h;
+	h.setBits (i);
+
+	if (!h.isFinite())
+	    h = 0;
+	else if (h >= 8 * log (HALF_MAX))
+	    h = HALF_MAX;
+	else
+	    h = exp (h / 8);
+
+        assert (OPENEXR_IMF_INTERNAL_NAMESPACE::expTable[i] == h.bits());
+    }
+
+    for (int i = 0; i < iMax; i++)
+    {
+	half h;
+	h.setBits (i);
+
+	if (!h.isFinite() || h < 0)
+	    h = 0;
+	else
+	    h = 8 * log (h);
+
+        assert (OPENEXR_IMF_INTERNAL_NAMESPACE::logTable[i] == h.bits());
+    }
+}

OpenEXR/IlmImfTest/testB44ExpLogTable.h

@@ -0,0 +1,7 @@
+//
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+//
+
+void testB44ExpLogTable (const std::string&);
+