From f20c8b963a8fae6895067bc0c9dcb02cd1135fd3 Mon Sep 17 00:00:00 2001
From: md5
Date: Thu, 5 May 2011 22:12:38 +0300
Subject: SWORD25: Disabled code which isn't necessary with our PNG decoder

---
 engines/sword25/gfx/image/pngloader.cpp     | 13 ++++++-------
 engines/sword25/gfx/image/pngloader.h       |  9 +++++++++
 engines/sword25/gfx/image/renderedimage.cpp |  4 +++-
 engines/sword25/gfx/image/swimage.cpp       |  4 +++-
 4 files changed, 21 insertions(+), 9 deletions(-)

(limited to 'engines/sword25/gfx')

diff --git a/engines/sword25/gfx/image/pngloader.cpp b/engines/sword25/gfx/image/pngloader.cpp
index f6c00b6968..d3c119b1a0 100644
--- a/engines/sword25/gfx/image/pngloader.cpp
+++ b/engines/sword25/gfx/image/pngloader.cpp
@@ -32,9 +32,6 @@
  *
  */
 
-// Define to use ScummVM's PNG decoder, instead of libpng
-#define USE_INTERNAL_PNG_DECODER
-
 #ifndef USE_INTERNAL_PNG_DECODER
 // Disable symbol overrides so that we can use png.h
 #define FORBIDDEN_SYMBOL_ALLOW_ALL
@@ -242,8 +239,8 @@ bool PNGLoader::decodeImage(const byte *fileDataPtr, uint fileSize, byte *&uncom
 	return doDecodeImage(fileDataPtr + pngOffset, fileSize - pngOffset, uncompressedDataPtr, width, height, pitch);
 }
 
-bool PNGLoader::doImageProperties(const byte *fileDataPtr, uint fileSize, int &width, int &height) {
 #ifndef USE_INTERNAL_PNG_DECODER
+bool PNGLoader::doImageProperties(const byte *fileDataPtr, uint fileSize, int &width, int &height) {
 	// Check for valid PNG signature
 	if (!doIsCorrectImageFormat(fileDataPtr, fileSize))
 		return false;
@@ -280,9 +277,7 @@ bool PNGLoader::doImageProperties(const byte *fileDataPtr, uint fileSize, int &w
 
 	// Destroy libpng structures
 	png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
-#else
-	// We don't need to read the image properties here...
-#endif
+
 	return true;
 
 }
@@ -292,5 +287,9 @@ bool PNGLoader::imageProperties(const byte *fileDataPtr, uint fileSize, int &wid
 	return doImageProperties(fileDataPtr + pngOffset, fileSize - pngOffset, width, height);
 }
 
+#else
+	// We don't need to read the image properties here...
+#endif
+
 
 } // End of namespace Sword25
diff --git a/engines/sword25/gfx/image/pngloader.h b/engines/sword25/gfx/image/pngloader.h
index e0d68ff8b9..fea6ece0e9 100644
--- a/engines/sword25/gfx/image/pngloader.h
+++ b/engines/sword25/gfx/image/pngloader.h
@@ -40,6 +40,9 @@
 
 namespace Sword25 {
 
+// Define to use ScummVM's PNG decoder, instead of libpng
+#define USE_INTERNAL_PNG_DECODER
+
 /**
  * Class for loading PNG files, and PNG data embedded into savegames.
  *
@@ -50,7 +53,9 @@ protected:
 	PNGLoader() {}	// Protected constructor to prevent instances
 
 	static bool doDecodeImage(const byte *fileDataPtr, uint fileSize, byte *&uncompressedDataPtr, int &width, int &height, int &pitch);
+#ifndef USE_INTERNAL_PNG_DECODER
 	static bool doImageProperties(const byte *fileDataPtr, uint fileSize, int &width, int &height);
+#endif
 
 public:
 
@@ -72,6 +77,8 @@ public:
 	                        byte *&pUncompressedData,
 	                        int &width, int &height,
 	                        int &pitch);
+
+#ifndef USE_INTERNAL_PNG_DECODER
 	/**
 	 * Extract the properties of an image.
 	 * @param[in] fileDatePtr	pointer to the image data
@@ -86,6 +93,8 @@ public:
 	static bool imageProperties(const byte *fileDatePtr, uint fileSize,
 	                            int &width,
 	                            int &height);
+#endif
+
 };
 
 } // End of namespace Sword25
diff --git a/engines/sword25/gfx/image/renderedimage.cpp b/engines/sword25/gfx/image/renderedimage.cpp
index 65ff1c703d..132c516c12 100644
--- a/engines/sword25/gfx/image/renderedimage.cpp
+++ b/engines/sword25/gfx/image/renderedimage.cpp
@@ -90,15 +90,17 @@ RenderedImage::RenderedImage(const Common::String &filename, bool &result) :
 		return;
 	}
 
+#ifndef USE_INTERNAL_PNG_DECODER
 	// Determine image properties
-	int pitch;
 	if (!PNGLoader::imageProperties(pFileData, fileSize, _width, _height)) {
 		error("Could not read image properties.");
 		delete[] pFileData;
 		return;
 	}
+#endif
 
 	// Uncompress the image
+	int pitch;
 	if (!PNGLoader::decodeImage(pFileData, fileSize, _data, _width, _height, pitch)) {
 		error("Could not decode image.");
 		delete[] pFileData;
diff --git a/engines/sword25/gfx/image/swimage.cpp b/engines/sword25/gfx/image/swimage.cpp
index 3b9b939eb3..0f3814eb54 100644
--- a/engines/sword25/gfx/image/swimage.cpp
+++ b/engines/sword25/gfx/image/swimage.cpp
@@ -56,14 +56,16 @@ SWImage::SWImage(const Common::String &filename, bool &result) :
 		return;
 	}
 
+#ifndef USE_INTERNAL_PNG_DECODER
 	// Determine image properties
-	int pitch;
 	if (!PNGLoader::imageProperties(pFileData, fileSize, _width, _height)) {
 		error("Could not read image properties.");
 		return;
 	}
+#endif
 
 	// Uncompress the image
+	int pitch;
 	byte *pUncompressedData;
 	if (!PNGLoader::decodeImage(pFileData, fileSize, pUncompressedData, _width, _height, pitch)) {
 		error("Could not decode image.");
-- 
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