Merged RGB color API and support in from /scummvm/branches/gsoc2009-16bit/

svn-id: r43577

4 files changed, 91 insertions, 22 deletions

diff --git a/graphics/cursorman.cpp b/graphics/cursorman.cpp
index 2e71b548bc..b77aac37cf 100644
--- a/graphics/cursorman.cpp
+++ b/graphics/cursorman.cpp
@@ -57,14 +57,14 @@ bool CursorManager::showMouse(bool visible) {
 	return g_system->showMouse(visible);
 }
 
-void CursorManager::pushCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor, int targetScale) {
-	Cursor *cur = new Cursor(buf, w, h, hotspotX, hotspotY, keycolor, targetScale);
+void CursorManager::pushCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, int targetScale, const Graphics::PixelFormat *format) {
+	Cursor *cur = new Cursor(buf, w, h, hotspotX, hotspotY, keycolor, targetScale, format);
 
 	cur->_visible = isVisible();
 	_cursorStack.push(cur);
 
 	if (buf) {
-		g_system->setMouseCursor(cur->_data, w, h, hotspotX, hotspotY, keycolor, targetScale);
+		g_system->setMouseCursor(cur->_data, w, h, hotspotX, hotspotY, keycolor, targetScale, format);
 	}
 }
 
@@ -77,7 +77,7 @@ void CursorManager::popCursor() {
 
 	if (!_cursorStack.empty()) {
 		cur = _cursorStack.top();
-		g_system->setMouseCursor(cur->_data, cur->_width, cur->_height, cur->_hotspotX, cur->_hotspotY, cur->_keycolor, cur->_targetScale);
+		g_system->setMouseCursor(cur->_data, cur->_width, cur->_height, cur->_hotspotX, cur->_hotspotY, cur->_keycolor, cur->_targetScale, &cur->_format);
 	}
 
 	g_system->showMouse(isVisible());
@@ -100,15 +100,24 @@ void CursorManager::popAllCursors() {
 	g_system->showMouse(isVisible());
 }
 
+void CursorManager::replaceCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, int targetScale, const Graphics::PixelFormat *format) {
 
-void CursorManager::replaceCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor, int targetScale) {
 	if (_cursorStack.empty()) {
-		pushCursor(buf, w, h, hotspotX, hotspotY, keycolor, targetScale);
+		pushCursor(buf, w, h, hotspotX, hotspotY, keycolor, targetScale, format);
 		return;
 	}
 
 	Cursor *cur = _cursorStack.top();
+
+#ifdef ENABLE_RGB_COLOR
+	uint size;
+	if (!format)
+		size = w * h;
+	else
+		size = w * h * format->bytesPerPixel;
+#else
 	uint size = w * h;
+#endif
 
 	if (cur->_size < size) {
 		delete[] cur->_data;
@@ -125,8 +134,14 @@ void CursorManager::replaceCursor(const byte *buf, uint w, uint h, int hotspotX,
 	cur->_hotspotY = hotspotY;
 	cur->_keycolor = keycolor;
 	cur->_targetScale = targetScale;
+#ifdef ENABLE_RGB_COLOR
+	if (format)
+		cur->_format = *format;
+	else
+		cur->_format = Graphics::PixelFormat::createFormatCLUT8();
+#endif
 
-	g_system->setMouseCursor(cur->_data, w, h, hotspotX, hotspotY, keycolor, targetScale);
+	g_system->setMouseCursor(cur->_data, w, h, hotspotX, hotspotY, keycolor, targetScale, format);
 }
 
 bool CursorManager::supportsCursorPalettes() {
diff --git a/graphics/cursorman.h b/graphics/cursorman.h
index f019e37b04..ae7008f54c 100644
--- a/graphics/cursorman.h
+++ b/graphics/cursorman.h
@@ -28,6 +28,10 @@
 #include "common/scummsys.h"
 #include "common/stack.h"
 #include "common/singleton.h"
+#include "graphics/pixelformat.h"
+#ifdef ENABLE_RGB_COLOR
+#include "common/system.h"
+#endif
 
 namespace Graphics {
 
@@ -59,18 +63,19 @@ public:
 	 * safely freed afterwards.
 	 *
 	 * @param buf		the new cursor data
-	 * @param w		the width
-	 * @param h		the height
+	 * @param w			the width
+	 * @param h			the height
 	 * @param hotspotX	the hotspot X coordinate
 	 * @param hotspotY	the hotspot Y coordinate
 	 * @param keycolor	the index for the transparent color
 	 * @param targetScale	the scale for which the cursor is designed
-	 *
+	 * @param format	a pointer to the pixel format which the cursor graphic uses, 
+	 *					CLUT8 will be used if this is NULL or not specified.
 	 * @note It is ok for the buffer to be a NULL pointer. It is sometimes
 	 *       useful to push a "dummy" cursor and modify it later. The
 	 *       cursor will be added to the stack, but not to the backend.
 	 */
-	void pushCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor = 255, int targetScale = 1);
+	void pushCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor = 0xFFFFFFFF, int targetScale = 1, const Graphics::PixelFormat *format = NULL);
 
 	/**
 	 * Pop a cursor from the stack, and restore the previous one to the
@@ -90,8 +95,10 @@ public:
 	 * @param hotspotY	the hotspot Y coordinate
 	 * @param keycolor	the index for the transparent color
 	 * @param targetScale	the scale for which the cursor is designed
+	 * @param format	a pointer to the pixel format which the cursor graphic uses,
+	 *					CLUT8 will be used if this is NULL or not specified.
 	 */
-	void replaceCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor = 255, int targetScale = 1);
+	void replaceCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor = 0xFFFFFFFF, int targetScale = 1, const Graphics::PixelFormat *format = NULL);
 
 	/**
 	 * Pop all of the cursors and cursor palettes from their respective stacks.
@@ -166,13 +173,24 @@ private:
 		uint _height;
 		int _hotspotX;
 		int _hotspotY;
-		byte _keycolor;
+		uint32 _keycolor;
+		Graphics::PixelFormat _format;
 		byte _targetScale;
 
 		uint _size;
-
-		Cursor(const byte *data, uint w, uint h, int hotspotX, int hotspotY, byte keycolor = 255, int targetScale = 1) {
+		Cursor(const byte *data, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor = 0xFFFFFFFF, int targetScale = 1, const Graphics::PixelFormat *format = NULL) {
+#ifdef ENABLE_RGB_COLOR
+			if (!format)
+				_format = Graphics::PixelFormat::createFormatCLUT8();
+			 else 
+				_format = *format;
+			_size = w * h * _format.bytesPerPixel;
+			_keycolor &= ((1 << (_format.bytesPerPixel << 3)) - 1);
+#else
+			_format = Graphics::PixelFormat::createFormatCLUT8();
 			_size = w * h;
+			_keycolor &= 0xFF;
+#endif
 			_data = new byte[_size];
 			if (data && _data)
 				memcpy(_data, data, _size);
@@ -180,7 +198,6 @@ private:
 			_height = h;
 			_hotspotX = hotspotX;
 			_hotspotY = hotspotY;
-			_keycolor = keycolor;
 			_targetScale = targetScale;
 		}
 
@@ -216,7 +233,6 @@ private:
 			delete[] _data;
 		}
 	};
-
 	Common::Stack<Cursor *> _cursorStack;
 	Common::Stack<Palette *> _cursorPaletteStack;
 };
diff --git a/graphics/pixelformat.h b/graphics/pixelformat.h
index f59650e5cc..d16de51ea7 100644
--- a/graphics/pixelformat.h
+++ b/graphics/pixelformat.h
@@ -27,6 +27,7 @@
 #define GRAPHICS_PIXELFORMAT_H
 
 #include "common/scummsys.h"
+#include "common/list.h"
 
 namespace Graphics {
 
@@ -50,6 +51,24 @@ struct PixelFormat {
 	byte rLoss, gLoss, bLoss, aLoss; /**< Precision loss of each color component. */
 	byte rShift, gShift, bShift, aShift; /**< Binary left shift of each color component in the pixel value. */
 
+	inline PixelFormat() {
+		bytesPerPixel = 
+		rLoss = gLoss = bLoss = aLoss = 
+		rShift = gShift = bShift = aShift = 0;
+	}
+
+	inline PixelFormat(byte BytesPerPixel, 
+						byte RBits, byte GBits, byte BBits, byte ABits, 
+						byte RShift, byte GShift, byte BShift, byte AShift) {
+		bytesPerPixel = BytesPerPixel;
+		rLoss = 8 - RBits, gLoss = 8 - GBits, bLoss = 8 - BBits, aLoss = 8 - ABits;
+		rShift = RShift, gShift = GShift, bShift = BShift, aShift = AShift;
+	}
+
+	static inline PixelFormat createFormatCLUT8() {
+		return PixelFormat(1, 0, 0, 0, 0, 0, 0, 0, 0);
+	}
+
 	inline bool operator==(const PixelFormat &fmt) const {
 		// TODO: If aLoss==8, then the value of aShift is irrelevant, and should be ignored.
 		return 0 == memcmp(this, &fmt, sizeof(PixelFormat));
@@ -129,6 +148,26 @@ struct PixelFormat {
 	}
 };
 
+/**
+ * Determines the first matching format between two lists.
+ *
+ * @param backend	The higher priority list, meant to be a list of formats supported by the backend
+ * @param frontend	The lower priority list, meant to be a list of formats supported by the engine
+ * @return			The first item on the backend list that also occurs on the frontend list
+ *					or PixelFormat::createFormatCLUT8() if no matching formats were found.
+ */
+inline PixelFormat findCompatibleFormat(Common::List<PixelFormat> backend, Common::List<PixelFormat> frontend) {
+#ifdef ENABLE_RGB_COLOR
+	for (Common::List<PixelFormat>::iterator i = backend.begin(); i != backend.end(); ++i) {
+		for (Common::List<PixelFormat>::iterator j = frontend.begin(); j != frontend.end(); ++j) {
+			if (*i == *j)
+				return *i;
+		}
+	}
+#endif
+	return PixelFormat::createFormatCLUT8();
+}
+
 } // end of namespace Graphics
 
 #endif
diff --git a/graphics/scaler.cpp b/graphics/scaler.cpp
index a3aaaa121d..8c677cc083 100644
--- a/graphics/scaler.cpp
+++ b/graphics/scaler.cpp
@@ -30,18 +30,17 @@
 
 int gBitFormat = 565;
 
-static const Graphics::PixelFormat gPixelFormat555 = {
+static const Graphics::PixelFormat gPixelFormat555(
 	2,
 	3, 3, 3, 8,
 	10, 5, 0, 0
-	};
+	);
 
-static const Graphics::PixelFormat gPixelFormat565 = {
+static const Graphics::PixelFormat gPixelFormat565(
 	2,
 	3, 2, 3, 8,
 	11, 5, 0, 0
-	};
-
+	);
 
 
 #ifndef DISABLE_HQ_SCALERS