Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler

git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@354 632fc199-4ca6-4c93-a231-07263d6284db

7 files changed, 30 insertions, 109 deletions

diff --git a/BUILDING.txt b/BUILDING.txt
index 938e1c2..3737987 100644
--- a/BUILDING.txt
+++ b/BUILDING.txt
@@ -169,7 +169,7 @@ Build Recipes
 
 Add
 
-  --host i686-pc-linux-gnu CFLAGS='-O3 -m32' CXXFLAGS='-O3 -m32' LDFLAGS=-m32
+  --host i686-pc-linux-gnu CFLAGS='-O3 -m32' LDFLAGS=-m32
 
 to the configure command line.
 
@@ -190,7 +190,7 @@ installed.
 
 Add
 
-  CFLAGS='-O3 -m32' CXXFLAGS='-O3 -m32' LDFLAGS=-m32
+  CFLAGS='-O3 -m32' LDFLAGS=-m32
 
 to the configure command line.
 
@@ -203,8 +203,6 @@ Add
   --host x86_64-apple-darwin NASM=/opt/local/bin/nasm \
   CFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
     -mmacosx-version-min=10.4 -O3' \
-    CXXFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
-    -mmacosx-version-min=10.4 -O3' \
     LDFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
     -mmacosx-version-min=10.4'
 
@@ -219,8 +217,6 @@ Add
 
   CFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
     -mmacosx-version-min=10.4 -O3 -m32' \
-    CXXFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
-    -mmacosx-version-min=10.4 -O3 -m32' \
     LDFLAGS='-isysroot /Developer/SDKs/MacOSX10.4u.sdk \
     -mmacosx-version-min=10.4 -m32'
 
@@ -232,7 +228,7 @@ to the configure command line.  The OS X 10.4 SDK must be installed.
 
 Add
 
-  --host x86_64-pc-solaris CFLAGS='-O3 -m64' CXXFLAGS='-O3 -m64' LDFLAGS=-m64
+  --host x86_64-pc-solaris CFLAGS='-O3 -m64' LDFLAGS=-m64
 
 to the configure command line.
 
@@ -242,8 +238,8 @@ to the configure command line.
 
 Add
 
-  --host i386-unknown-freebsd CC='gcc -B /usr/lib32' CXX='g++ -B/usr/lib32' \
-    CFLAGS='-O3 -m32' CXXFLAGS='-O3 -m32' LDFLAGS='-B/usr/lib32'
+  --host i386-unknown-freebsd CC='gcc -B /usr/lib32' CFLAGS='-O3 -m32' \
+    LDFLAGS='-B/usr/lib32'
 
 to the configure command line.  NASM 2.07 or later from FreeBSD ports must be
 installed.
@@ -254,15 +250,14 @@ Sun Studio
 
 Add
 
-  CC=cc CXX=CC
+  CC=cc
 
 to the configure command line.  libjpeg-turbo will automatically be built with
-the maximum optimization level (-xO5) unless you override CFLAGS and CXXFLAGS.
+the maximum optimization level (-xO5) unless you override CFLAGS.
 
 To build a 64-bit version of libjpeg-turbo using Sun Studio, add
 
-  --host x86_64-pc-solaris CC=cc CXX=CC CFLAGS='-xO5 -m64' \
-    CXXFLAGS='-xO5 -m64' LDFLAGS=-m64
+  --host x86_64-pc-solaris CC=cc CFLAGS='-xO5 -m64' LDFLAGS=-m64
 
 to the configure command line.
 
@@ -502,7 +497,7 @@ Build Recipes
 ----------------------------
 
   cd {build_directory}
-  CC=/usr/bin/x86_64-w64-mingw32-gcc CXX=/usr/bin/x86_64-w64-mingw32-g++ \
+  CC=/usr/bin/x86_64-w64-mingw32-gcc \
     cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
     -DCMAKE_AR=/usr/bin/x86_64-w64-mingw32-ar \
     -DCMAKE_RANLIB=/usr/bin/x86_64-w64-mingw32-ranlib {source_directory}
@@ -517,7 +512,7 @@ mingw64-x86_64-gcc-g++ packages (and their dependencies) must be installed.
 ----------------------------
 
   cd {build_directory}
-  CC=/usr/bin/i686-w64-mingw32-gcc CXX=/usr/bin/i686-w64-mingw32-g++ \
+  CC=/usr/bin/i686-w64-mingw32-gcc \
     cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
     -DDCMAKE_AR=/usr/bin/i686-w64-mingw32-ar \
     -DCMAKE_RANLIB=/usr/bin/i686-w64-mingw32-ranlib {source_directory}
@@ -536,7 +531,6 @@ toolchain (which is faster than the Cygwin version):
 
   cd {build_directory}
   CC={mingw-w64_binary_path}/x86_64-w64-mingw32-gcc \
-    CXX={mingw-w64_binary_path}/x86_64-w64-mingw32-g++ \
     cmake -G "MSYS Makefiles" \
     -DCMAKE_AR={mingw-w64_binary_path}/x86_64-w64-mingw32-ar \
     -DCMAKE_RANLIB={mingw-w64_binary_path}/x86_64-w64-mingw32-ranlib \
@@ -549,7 +543,6 @@ MinGW Build on Linux
 
   cd {build_directory}
   CC={mingw_binary_path}/i386-mingw32-gcc \
-    CXX={mingw_binary_path}/i386-mingw32-g++ \
     cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
     -DCMAKE_AR={mingw_binary_path}/i386-mingw32-ar \
     -DCMAKE_RANLIB={mingw_binary_path}/i386-mingw32-ranlib \
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2b690e9..87538c1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -86,9 +86,7 @@ endif(WITH_JPEG8)
 if(MSVC)
   # Use the static C library for all build types
   foreach(var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
-    CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
-    CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
-    CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
+    CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
     if(${var} MATCHES "/MD")
       string(REGEX REPLACE "/MD" "/MT" ${var} "${${var}}")
     endif()
@@ -203,10 +201,10 @@ target_link_libraries(jpegut turbojpeg)
 add_executable(jpegut-static jpegut.c)
 target_link_libraries(jpegut-static turbojpeg-static)
 
-add_executable(jpgtest jpgtest.cxx bmp.c)
+add_executable(jpgtest jpgtest.c bmp.c)
 target_link_libraries(jpgtest turbojpeg)
 
-add_executable(jpgtest-static jpgtest.cxx bmp.c)
+add_executable(jpgtest-static jpgtest.c bmp.c)
 target_link_libraries(jpgtest-static turbojpeg-static)
 
 add_executable(cjpeg-static cjpeg.c cdjpeg.c rdbmp.c rdgif.c rdppm.c rdswitch.c
diff --git a/ChangeLog.txt b/ChangeLog.txt
index 5c5a05d..7167cb0 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -3,6 +3,8 @@
 
 [1] Added a JNI wrapper for TurboJPEG/OSS.  See java/README for more details.
 
+[2] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler.
+
 
 1.1.0
 =====
diff --git a/Makefile.am b/Makefile.am
index e5fb1f0..84dcad4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -79,7 +79,7 @@ TSTHDRS = rrutil.h rrtimer.h
 bin_PROGRAMS = cjpeg djpeg jpegtran rdjpgcom wrjpgcom
 noinst_PROGRAMS = jpgtest jpegut
 
-jpgtest_SOURCES = $(TSTHDRS) jpgtest.cxx bmp.h bmp.c
+jpgtest_SOURCES = $(TSTHDRS) jpgtest.c bmp.h bmp.c
 
 jpgtest_LDADD = libturbojpeg.la
 
diff --git a/configure.ac b/configure.ac
index 23c80ee..57724f9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,10 +13,8 @@ AC_DEFINE([HAVE_PROTOTYPES], 1, [Define if your compiler supports prototypes])
 
 # Checks for programs.
 SAVED_CFLAGS=${CFLAGS}
-SAVED_CXXFLAGS=${CXXFLAGS}
 AC_PROG_CPP
 AC_PROG_CC
-AC_PROG_CXX
 AC_PROG_INSTALL
 AC_PROG_LIBTOOL
 AC_PROG_LN_S
@@ -32,9 +30,6 @@ if test "x${GCC}" = "xyes"; then
   if test "x${SAVED_CFLAGS}" = "x"; then
     CFLAGS=-O3
   fi
-  if test "x${SAVED_CXXFLAGS}" = "x"; then
-    CXXFLAGS=-O3
-  fi
 fi
 
 AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
@@ -42,9 +37,6 @@ if test "x${SUNCC}" = "xyes"; then
   if test "x${SAVED_CFLAGS}" = "x"; then
     CFLAGS=-xO5
   fi
-  if test "x${SAVED_CXXFLAGS}" = "x"; then
-    CXXFLAGS=-xO5
-  fi
 fi
 
 # Checks for libraries.
diff --git a/jpgtest.cxx b/jpgtest.c
index 0a90123..6ec507a 100644
--- a/jpgtest.cxx
+++ b/jpgtest.c
@@ -1,6 +1,6 @@
 /* Copyright (C)2004 Landmark Graphics Corporation
  * Copyright (C)2005, 2006 Sun Microsystems, Inc.
- * Copyright (C)2009-2010 D. R. Commander
+ * Copyright (C)2009-2011 D. R. Commander
  *
  * This library is free software and may be redistributed and/or modified under
  * the terms of the wxWindows Library License, Version 3.1 or (at your option)
@@ -64,19 +64,19 @@ void printsigfig(double val, int figs)
 	printf(format, val);
 }
 
-void dotest(unsigned char *srcbuf, int w, int h, BMPPIXELFORMAT pf, int bu,
+void dotest(unsigned char *srcbuf, int w, int h, int pf, int bu,
 	int jpegsub, int qual, char *filename, int dotile, int useppm, int quiet)
 {
 	char tempstr[1024];
 	FILE *outfile=NULL;  tjhandle hnd;
 	unsigned char **jpegbuf=NULL, *rgbbuf=NULL;
-	rrtimer timer; double elapsed;
+	double start, elapsed;
 	int jpgbufsize=0, i, j, tilesizex, tilesizey, numtilesx, numtilesy, ITER;
 	unsigned long *comptilesize=NULL;
 	int flags=(forcemmx?TJ_FORCEMMX:0)|(forcesse?TJ_FORCESSE:0)
 		|(forcesse2?TJ_FORCESSE2:0)|(forcesse3?TJ_FORCESSE3:0)
 		|(fastupsample?TJ_FASTUPSAMPLE:0);
-	int ps=_ps[pf];
+	int ps=_ps[pf], tilen;
 	int pitch=w*ps, yuvsize;
 	int hsf=_hsf[jpegsub], vsf=_vsf[jpegsub];
 	int pw=PAD(w, hsf), ph=PAD(h, vsf);
@@ -129,10 +129,10 @@ void dotest(unsigned char *srcbuf, int w, int h, BMPPIXELFORMAT pf, int bu,
 			jpegbuf[0], &comptilesize[0], jpegsub, qual, flags)==-1)
 			_throwtj("executing tjCompress()");
 		ITER=0;
-		timer.start();
+		start=rrtime();
 		do
 		{
-			jpgbufsize=0;  int tilen=0;
+			jpgbufsize=0;  tilen=0;
 			for(i=0; i<h; i+=tilesizey)
 			{
 				for(j=0; j<w; j+=tilesizex)
@@ -147,7 +147,7 @@ void dotest(unsigned char *srcbuf, int w, int h, BMPPIXELFORMAT pf, int bu,
 				}
 			}
 			ITER++;
-		} while((elapsed=timer.elapsed())<5.);
+		} while((elapsed=rrtime()-start)<5.);
 		if(tjDestroy(hnd)==-1) _throwtj("executing tjDestroy()");
 		hnd=NULL;
 		if(quiet)
@@ -196,7 +196,7 @@ void dotest(unsigned char *srcbuf, int w, int h, BMPPIXELFORMAT pf, int bu,
 			tilesizey, ps, flags)==-1)
 			_throwtj("executing tjDecompress()");
 		ITER=0;
-		timer.start();
+		start=rrtime();
 		do
 		{
 			int tilen=0;
@@ -212,7 +212,7 @@ void dotest(unsigned char *srcbuf, int w, int h, BMPPIXELFORMAT pf, int bu,
 				}
 			}
 			ITER++;
-		}	while((elapsed=timer.elapsed())<5.);
+		}	while((elapsed=rrtime()-start)<5.);
 		if(tjDestroy(hnd)==-1) _throwtj("executing tjDestroy()");
 		hnd=NULL;
 		if(quiet)
@@ -301,13 +301,13 @@ void dotest(unsigned char *srcbuf, int w, int h, BMPPIXELFORMAT pf, int bu,
 }
 
 
-void dodecomptest(char *filename, BMPPIXELFORMAT pf, int bu, int useppm,
+void dodecomptest(char *filename, int pf, int bu, int useppm,
 	int quiet)
 {
 	char tempstr[1024];
 	FILE *file=NULL;  tjhandle hnd;
 	unsigned char *jpegbuf=NULL, *rgbbuf=NULL;
-	rrtimer timer; double elapsed;
+	double start, elapsed;
 	int w, h, ITER;
 	unsigned long jpgbufsize=0;
 	int flags=(forcemmx?TJ_FORCEMMX:0)|(forcesse?TJ_FORCESSE:0)
@@ -373,14 +373,14 @@ void dodecomptest(char *filename, BMPPIXELFORMAT pf, int bu, int useppm,
 	if(tjDecompress(hnd, jpegbuf, jpgbufsize, rgbbuf, w, pitch, h, ps, flags)==-1)
 		_throwtj("executing tjDecompress()");
 	ITER=0;
-	timer.start();
+	start=rrtime();
 	do
 	{
 		if(tjDecompress(hnd, jpegbuf, jpgbufsize, rgbbuf, w, pitch, h, ps, flags)
 			==-1)
 			_throwtj("executing tjDecompress()");
 		ITER++;
-	}	while((elapsed=timer.elapsed())<5.);
+	}	while((elapsed=rrtime()-start)<5.);
 	if(tjDestroy(hnd)==-1) _throwtj("executing tjDestroy()");
 	hnd=NULL;
 	if(quiet)
@@ -449,7 +449,7 @@ int main(int argc, char *argv[])
 {
 	unsigned char *bmpbuf=NULL;  int w, h, i, useppm=0;
 	int qual, dotile=0, quiet=0, hiqual=-1;  char *temp;
-	BMPPIXELFORMAT pf=BMP_BGR;
+	int pf=BMP_BGR;
 	int bu=0, minarg=2;
 
 	printf("\n");
diff --git a/rrtimer.h b/rrtimer.h
index 4db5e37..3031ef5 100644
--- a/rrtimer.h
+++ b/rrtimer.h
@@ -15,69 +15,6 @@
 #ifndef __RRTIMER_H__
 #define __RRTIMER_H__
 
-#ifdef __cplusplus
-
-#ifdef _WIN32
-#include <windows.h>
-#else
-#include <sys/time.h>
-#endif
-
-class rrtimer
-{
-	public:
-
-		rrtimer(void) : t1(0.0)
-		{
-			#ifdef _WIN32
-			highres=false;  tick=0.001;
-			LARGE_INTEGER Frequency;
-			if(QueryPerformanceFrequency(&Frequency)!=0)
-			{
-				tick=(double)1.0/(double)(Frequency.QuadPart);
-				highres=true;
-			}
-			#endif
-		}
-
-		void start(void)
-		{
-			t1=time();
-		}
-
-		double time(void)
-		{
-			#ifdef _WIN32
-			if(highres)
-			{
-				LARGE_INTEGER Time;
-				QueryPerformanceCounter(&Time);
-				return((double)(Time.QuadPart)*tick);
-			}
-			else
-				return((double)GetTickCount()*tick);
-			#else
-			struct timeval __tv;
-			gettimeofday(&__tv, (struct timezone *)NULL);
-			return((double)(__tv.tv_sec)+(double)(__tv.tv_usec)*0.000001);
-			#endif
-		}
-
-		double elapsed(void)
-		{
-			return time()-t1;
-		}
-
-	private:
-
-		#ifdef _WIN32
-		bool highres;  double tick;
-		#endif
-		double t1;
-};
-
-#endif  // __cplusplus
-
 #ifdef _WIN32
 
 #include <windows.h>
@@ -111,4 +48,3 @@ static __inline double rrtime(void)
 #endif
 
 #endif
-