Use SDL_RWops directly on top of PhysFS

This avoids the creation of a temporary buffer containing a complete
file for the sole purpose of wrapping it up in an SDL_RWops.

The necessary wrapper is by Ryan C. Gordon and is included in the
PhysFS repository under 'extras'.

Reviewed-by: Yohann Ferreira

Conflicts:

	mana.files
	src/CMakeLists.txt
	src/resources/resourcemanager.cpp
	src/resources/soundeffect.cpp

1 files changed, 6 insertions, 9 deletions

diff --git a/src/resources/image.h b/src/resources/image.h
index a9f5722cd..d22ed4be2 100644
--- a/src/resources/image.h
+++ b/src/resources/image.h
@@ -66,28 +66,25 @@ class Image : public Resource
         virtual ~Image();
 
         /**
-         * Loads an image from a buffer in memory.
+         * Loads an image from an SDL_RWops structure.
          *
-         * @param buffer     The memory buffer containing the image data.
-         * @param bufferSize The size of the memory buffer in bytes.
+         * @param rw         The SDL_RWops to load the image from.
          *
          * @return <code>NULL</code> if an error occurred, a valid pointer
          *         otherwise.
          */
-        static Resource *load(void *buffer, unsigned bufferSize);
+        static Resource *load(SDL_RWops *rw);
 
         /**
-         * Loads an image from a buffer in memory and recolors it.
+         * Loads an image from an SDL_RWops structure and recolors it.
          *
-         * @param buffer     The memory buffer containing the image data.
-         * @param bufferSize The size of the memory buffer in bytes.
+         * @param rw         The SDL_RWops to load the image from.
          * @param dye        The dye used to recolor the image.
          *
          * @return <code>NULL</code> if an error occurred, a valid pointer
          *         otherwise.
          */
-        static Resource *load(void *buffer, unsigned bufferSize,
-                              Dye const &dye);
+        static Resource *load(SDL_RWops *rw, Dye const &dye);
 
         /**
          * Loads an image from an SDL surface.