Add libPNG support stubs.

CMakeLists.txt

@@ -10,6 +10,7 @@ find_package(PythonLibs REQUIRED)
 find_package(EXPAT REQUIRED)
 find_package(ZLIB REQUIRED)
 find_package(PhysX REQUIRED)  #TODO: Not required if we aren't building the client
+find_package(PNG REQUIRED)
 find_package(Ogg REQUIRED)    #TODO: Not required if we aren't building the client
 find_package(Vorbis REQUIRED) #TODO: Not required if we aren't building the client
 find_package(Speex REQUIRED)  #TODO: Not required if we aren't building the client

Sources/Plasma/PubUtilLib/plGImage/CMakeLists.txt

@@ -3,6 +3,9 @@ include_directories("../../NucleusLib/inc")
 include_directories("../../NucleusLib")
 include_directories("../../PubUtilLib")
 
+find_package(PNG REQUIRED)
+include_directories(${PNG_INCLUDE_DIR})
+
 set(plGImage_SOURCES
     hsCodecManager.cpp
     hsDXTDirectXCodec.cpp
@@ -17,6 +20,7 @@ set(plGImage_SOURCES
     plFontCache.cpp
     plLODMipmap.cpp
     plMipmap.cpp
+    plPNG.cpp
     plTGAWriter.cpp
     plWinFontCache.cpp
 )
@@ -37,6 +41,7 @@ set(plGImage_HEADERS
     plGImageCreatable.h
     plLODMipmap.h
     plMipmap.h
+    plPNG.h
     plTGAWriter.h
     plWinFontCache.h
 )

Sources/Plasma/PubUtilLib/plGImage/plPNG.cpp

@@ -0,0 +1,139 @@
+/*==LICENSE==*
+
+CyanWorlds.com Engine - MMOG client, server and tools
+Copyright (C) 2011  Cyan Worlds, Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+You can contact Cyan Worlds, Inc. by email legal@cyan.com
+ or by snail mail at:
+      Cyan Worlds, Inc.
+      14617 N Newport Hwy
+      Mead, WA   99021
+
+*==LICENSE==*/
+
+#include "hsTypes.h"
+#include "hsStream.h"
+#include "hsExceptions.h"
+#include "hsUtils.h"
+#include "plPNG.h"
+#include "plGImage/plMipmap.h"
+
+#include <png.h>
+
+
+plMipmap *plPNG::IRead( hsStream *inStream )
+{
+    plMipmap *newMipmap = NULL;
+    png_structp png_ptr;
+    png_infop info_ptr;
+    png_infop end_info;
+
+    try
+    {
+        //  Check PNG Signature
+        png_byte sig[8];
+        inStream->Read8Bytes((char *) sig);
+        if (!png_sig_cmp(sig, 0, 8))
+        {
+            inStream->Rewind();
+
+            //  Allocate required structs
+            png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+            if (!png_ptr)
+               throw( false );
+
+            info_ptr = png_create_info_struct(png_ptr);
+            if (!info_ptr)
+            {
+               png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
+               throw( false );
+            }
+
+            end_info = png_create_info_struct(png_ptr);
+            if (!end_info)
+            {
+               png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
+               throw( false );
+            }
+
+
+
+            //  Clean up allocated structs
+            png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
+        }
+    }
+    catch( ... )
+    {
+        if (newMipmap != NULL)
+        {
+            delete newMipmap;
+            newMipmap = NULL;
+        }
+    }
+
+    return newMipmap;
+}
+
+plMipmap* plPNG::ReadFromFile( const char *fileName )
+{
+    wchar* wFilename = hsStringToWString(fileName);
+    plMipmap* retVal = ReadFromFile(wFilename);
+    delete [] wFilename;
+    return retVal;
+}
+
+plMipmap* plPNG::ReadFromFile( const wchar *fileName )
+{
+    hsUNIXStream in;
+    if (!in.Open(fileName, L"rb"))
+        return false;
+    plMipmap* ret = IRead(&in);
+    in.Close();
+    return ret;
+}
+
+hsBool  plPNG::IWrite( plMipmap *source, hsStream *outStream )
+{
+    hsBool result = true;
+
+    try
+    {
+    }
+    catch( ... )
+    {
+        result = false;
+    }
+
+    return result;
+}
+
+hsBool  plPNG::WriteToFile( const char *fileName, plMipmap *sourceData )
+{
+    wchar* wFilename = hsStringToWString(fileName);
+    hsBool retVal = WriteToFile(wFilename, sourceData);
+    delete [] wFilename;
+    return retVal;
+}
+
+hsBool  plPNG::WriteToFile( const wchar *fileName, plMipmap *sourceData )
+{
+    hsUNIXStream out;
+    if (!out.Open(fileName, L"wb"))
+        return false;
+    hsBool ret = IWrite(sourceData, &out);
+    out.Close();
+    return ret;
+}

Sources/Plasma/PubUtilLib/plGImage/plPNG.h

@@ -0,0 +1,54 @@
+/*==LICENSE==*
+
+CyanWorlds.com Engine - MMOG client, server and tools
+Copyright (C) 2011  Cyan Worlds, Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+You can contact Cyan Worlds, Inc. by email legal@cyan.com
+ or by snail mail at:
+      Cyan Worlds, Inc.
+      14617 N Newport Hwy
+      Mead, WA   99021
+
+*==LICENSE==*/
+
+#ifndef _plPNG_h
+#define _plPNG_h
+
+
+//// Class Definition /////////////////////////////////////////////////////////
+
+class plMipmap;
+class hsStream;
+
+class plPNG
+{
+    protected:
+
+        plMipmap *IRead( hsStream *inStream );
+        hsBool IWrite( plMipmap *source, hsStream *outStream );
+
+    public:
+
+        plMipmap *ReadFromStream( hsStream *inStream ) { return IRead( inStream ); }
+        plMipmap *ReadFromFile( const char *fileName );
+        plMipmap *ReadFromFile( const wchar *fileName );
+
+        hsBool WriteToStream( hsStream *outStream, plMipmap *sourceData ) { return IWrite( sourceData, outStream ); }
+        hsBool WriteToFile( const char *fileName, plMipmap *sourceData );
+        hsBool WriteToFile( const wchar *fileName, plMipmap *sourceData );
+};
+
+#endif // _plPNG_h