Merged revisions 33452-33453,33455-33459,33463-33464,33466-33471,33473-33474,33478,33490,33492,33495-33496,33509-33512,33518-33519,33522-33527,33529-33530,33537,33541,33544,33546,33550,33552-33554,33556,33558,33561-33562,33565,33568,33570,33574,33576,33578-33581,33584-33587,33590,33596,33604-33611,33614-33615,33617-33618,33620-33621,33623,33626-33627,33632-33633,33635,33637,33639-33640,33642-33645,33648,33654-33655,33664,33667-33670,33673-33674,33678,33682,33686-33691,33693,33696,33698,33700,33703,33708,33710,33712-33714,33716,33719,33721-33723,33725-33727,33729-33730,33733,33736,33742,33754,33756,33758,33761,33763,33766,33777,33781-33788,33790,33792-33793,33795,33797,33805,33807-33812,33815-33817,33819,33822,33826,33829,33837,33839,33844,33847,33858-33861,33864,33871-33873,33875,33877-33879,33886,33889-33892,33894,33896,33900,33902-33903,33919,33928,33930,33932-33936,33938-33940,33942-33943,33948,33950,33953,33967,33973,33976,33978,33980,33985,33991,33993,33999-34000,34006,34009,34011,34013,34015,34019,34021-34023,34025,34027-34028,34030,34032-34034,34036,34038-34039,34041,34046-34048,34050-34055,34057,34059-34065,34067,34072,34074,34076,34078-34081,34084,34086-34087,34089-34090,34093,34096-34102,34104,34107,34113,34116,34119,34122,34124,34126,34128,34131-34132,34135,34138,34141,34144,34146,34149,34152-34154,34156-34157,34160,34163-34164,34169,34173,34179-34194,34196-34198,34200-34201,34205-34206,34208-34217,34219-34225,34227-34228,34234-34237,34239-34249,34251-34279,34281-34284,34286-34288,34290-34320,34323-34324,34326,34328-34329,34332,34334,34336,34338-34340,34343-34353,34356-34357,34359-34371,34373,34375,34378,34381-34382,34384-34385,34389-34391,34393-34394,34396-34397,34399-34405,34407-34409,34411,34413,34415,34417-34420,34423-34426,34428-34438,34440-34454,34456-34458,34460,34462-34469,34472,34474,34479-34481,34483-34498,34501-34505,34508,34511-34518,34520-34524,34526-34563,34566-34569,34571-34590,34592,34595-34599,34602-34603,34605,34613-34615,34617,34619-34624,34627-34628,34630-34639,34642-34649 via svnmerge from

https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk svn-id: r34654
author: Stephen Kennedy 2008-09-26 21:53:08 +0000
committer: Stephen Kennedy 2008-09-26 21:53:08 +0000
commit: a7bb113e83c88fad3a23d408caa99f918fdb610a (patch)
tree: 698dd9d85abaa6a20957bfb9c0e006e9dd1dc8b3 /graphics
parent: 11c0a3bdedcdf5eb2618b9db67b559663fb93320 (diff)
parent: c1385076cbc57f1a4a52946a46b3ea06ecf37f37 (diff)
download: scummvm-rg350-a7bb113e83c88fad3a23d408caa99f918fdb610a.tar.gz
scummvm-rg350-a7bb113e83c88fad3a23d408caa99f918fdb610a.tar.bz2
scummvm-rg350-a7bb113e83c88fad3a23d408caa99f918fdb610a.zip
15 files changed, 384 insertions, 111 deletions
diff --git a/graphics/dxa_player.cpp b/graphics/dxa_player.cpp
index 28a1bc4dbd..f4c93a51f1 100644
--- a/graphics/dxa_player.cpp
+++ b/graphics/dxa_player.cpp
@@ -24,6 +24,7 @@
  */
 
 #include "common/endian.h"
+#include "common/file.h"
 #include "graphics/dxa_player.h"
 #include "common/util.h"
 
diff --git a/graphics/dxa_player.h b/graphics/dxa_player.h
index 5415e440d2..dbe39bbcee 100644
--- a/graphics/dxa_player.h
+++ b/graphics/dxa_player.h
@@ -27,11 +27,7 @@
 #define GRAPHICS_DXA_PLAYER_H
 
 #include "common/scummsys.h"
-#include "common/file.h"
-
-namespace Common {
-	class File;
-}
+#include "common/stream.h"
 
 namespace Graphics {
 
diff --git a/graphics/font.cpp b/graphics/font.cpp
index 0b0405b4b4..0f67899706 100644
--- a/graphics/font.cpp
+++ b/graphics/font.cpp
@@ -513,6 +513,7 @@ int bdf_read_bitmaps(Common::SeekableReadStream &fp, NewFontData* pf) {
 }
 
 /* read the next non-comment line, returns buf or NULL if EOF*/
+// TODO: Can we use SeekableReadStream::readLine resp. readLine_NEW instead?
 char *bdf_getline(Common::SeekableReadStream &fp, char *buf, int len) {
 	int c;
 	char *b;
diff --git a/graphics/iff.cpp b/graphics/iff.cpp
index 514fba9cc0..b3846c5d26 100644
--- a/graphics/iff.cpp
+++ b/graphics/iff.cpp
@@ -219,7 +219,7 @@ void PBMDecoder::readBODY(Common::IFFChunk& chunk) {
 
 	switch (_bitmapHeader.pack) {
 	case 0:
-		while (!chunk.eos()) {
+		while (!chunk.hasReadAll()) {
 			((byte*)_surface->pixels)[si++] = chunk.readByte();
 		}
 		break;
@@ -245,7 +245,9 @@ PackBitsReadStream::~PackBitsReadStream() {
 }
 
 bool PackBitsReadStream::eos() const {
-	return _input->eos() & (_rStoragePos == _wStoragePos);
+	//FIXME: eos definition needs to be changed in parallaction engine
+	// which is the only place where this class is used
+	return _input->eos() && (_rStoragePos == _wStoragePos);
 }
 
 uint32 PackBitsReadStream::read(void *dataPtr, uint32 dataSize) {
@@ -291,6 +293,9 @@ void PackBitsReadStream::unpack() {
 
 	while (_out < _outEnd && !_input->eos()) {
 		byteRun = _input->readByte();
+		//FIXME: eos definition needs to be changed in parallaction engine
+		// which is the only place where this class is used
+		//if (_input->eos()) break;
 		if (byteRun <= 127) {
 			i = byteRun + 1;
 			for (j = 0; j < i; j++) {
diff --git a/graphics/imageman.cpp b/graphics/imageman.cpp
index 83ffc40c99..44ac7c9e75 100644
--- a/graphics/imageman.cpp
+++ b/graphics/imageman.cpp
@@ -26,14 +26,13 @@
 #include "graphics/imageman.h"
 #include "graphics/surface.h"
 
+#include "common/unzip.h"
+
 DECLARE_SINGLETON(Graphics::ImageManager);
 
 namespace Graphics {
-ImageManager::ImageManager() : _surfaces()
-#ifdef USE_ZLIB
-, _archives()
-#endif
-{
+
+ImageManager::ImageManager() {
 }
 
 ImageManager::~ImageManager() {
@@ -44,36 +43,21 @@ ImageManager::~ImageManager() {
 		*pos = 0;
 	}
 	_surfaces.clear();
-#ifdef USE_ZLIB
-	for (ZipIterator pos2 = _archives.begin(); pos2 != _archives.end(); ++pos2) {
-		unzClose(pos2->file);
-	}
-	_archives.clear();
-#endif
 }
 
 bool ImageManager::addArchive(const Common::String &name) {
 #ifdef USE_ZLIB
-	unzFile newFile = unzOpen(name.c_str());
-	if (!newFile)
+	Common::ZipArchive *arch = new Common::ZipArchive(name);
+	if (!arch || !arch->isOpen())
 		return false;
-	Archive arch;
-	arch.file = newFile;
-	arch.filename = name;
-	_archives.push_back(arch);
+	_archives.add(name, Common::ArchivePtr(arch));
 #endif
 	return true;
 }
 
-void ImageManager::remArchive(const Common::String &name) {
+void ImageManager::removeArchive(const Common::String &name) {
 #ifdef USE_ZLIB
-	for (ZipIterator pos = _archives.begin(); pos != _archives.end(); ++pos) {
-		if (pos->filename.compareToIgnoreCase(name) == 0) {
-			unzClose(pos->file);
-			_archives.erase(pos);
-			break;
-		}
-	}
+	_archives.remove(name);
 #endif
 }
 
@@ -86,39 +70,21 @@ bool ImageManager::registerSurface(const Common::String &name, Surface *surf) {
 	if (!newHandle)
 		return false;
 
-	if (!surf) {
+	if (!surf)
 		surf = ImageDecoder::loadFile(name);
-		if (!surf) {
+
 #ifdef USE_ZLIB
-			ZipIterator file = _archives.end();
-			for (ZipIterator pos = _archives.begin(); pos != _archives.end(); ++pos) {
-				if (unzLocateFile(pos->file, name.c_str(), 2) == UNZ_OK) {
-					file = pos;
-					break;
-				}
-			}
-
-			if (file == _archives.end())
-				return false;
-
-			unz_file_info fileInfo;
-			unzOpenCurrentFile(file->file);
-			unzGetCurrentFileInfo(file->file, &fileInfo, NULL, 0, NULL, 0, NULL, 0);
-			uint8 *buffer = new uint8[fileInfo.uncompressed_size];
-			assert(buffer);
-			unzReadCurrentFile(file->file, buffer, fileInfo.uncompressed_size);
-			unzCloseCurrentFile(file->file);
-			Common::MemoryReadStream stream(buffer, fileInfo.uncompressed_size);
-			surf = ImageDecoder::loadFile(stream);
-			delete[] buffer;
-
-			if (!surf)
-				return false;
-#else
-			return false;
-#endif
+	if (!surf) {
+		Common::SeekableReadStream *stream = _archives.openFile(name);
+		if (stream) {
+			surf = ImageDecoder::loadFile(*stream);
+			delete stream;
 		}
 	}
+#endif
+
+	if (!surf)
+		return false;
 
 	newHandle->surface = surf;
 	newHandle->name = name;
diff --git a/graphics/imageman.h b/graphics/imageman.h
index c3b56c311f..f555b4c844 100644
--- a/graphics/imageman.h
+++ b/graphics/imageman.h
@@ -26,12 +26,14 @@
 #define GRAPHICS_IMAGEMAN_H
 
 #include "common/scummsys.h"
+
+#include "common/archive.h"
 #include "common/singleton.h"
 #include "common/str.h"
 #include "common/list.h"
-#include "common/unzip.h"
 
 namespace Graphics {
+
 struct Surface;
 
 class ImageManager : public Common::Singleton<ImageManager> {
@@ -53,7 +55,7 @@ public:
 	 *
 	 * @param name the name of the archive
 	 */
-	void remArchive(const Common::String &name);
+	void removeArchive(const Common::String &name);
 
 	/**
 	 * registers a surface to the ImageManager.
@@ -93,20 +95,11 @@ private:
 		Surface *surface;
 	};
 	typedef Common::List<Entry*>::iterator Iterator;
-#ifdef USE_ZLIB
-	struct Archive {
-		unzFile file;
-		Common::String filename;
-	};
-	typedef Common::List<Archive>::iterator ZipIterator;
-#endif
 
 	Iterator searchHandle(const Common::String &name);
 
 	Common::List<Entry*> _surfaces;
-#ifdef USE_ZLIB
-	Common::List<Archive> _archives;
-#endif
+	Common::SearchSet _archives;
 };
 
 } // end of namespace Graphics
diff --git a/graphics/module.mk b/graphics/module.mk
index a44042a044..6a5f7f9e22 100644
--- a/graphics/module.mk
+++ b/graphics/module.mk
@@ -15,8 +15,9 @@ MODULE_OBJS := \
 	mpeg_player.o \
 	primitives.o \
 	scaler.o \
-	scaler/thumbnail.o \
+	scaler/thumbnail_intern.o \
 	surface.o \
+	thumbnail.o \
 	surface-keycolored.o
 
 ifndef DISABLE_SCALERS
diff --git a/graphics/scaler.h b/graphics/scaler.h
index 2cf3f66239..95900de412 100644
--- a/graphics/scaler.h
+++ b/graphics/scaler.h
@@ -78,10 +78,22 @@ enum {
 extern void createThumbnail(const uint8* src, uint32 srcPitch, uint8* dstPtr, uint32 dstPitch, int width, int height);
 
 /**
- * creates a thumbnail from the current screen (without overlay)
+ * Creates a thumbnail from the current screen (without overlay).
+ *
  * @param surf	a surface (will always have 16 bpp after this for now)
  * @return		false if a error occured
  */
-extern bool createThumbnailFromScreen(Graphics::Surface* surf);
+extern bool createThumbnailFromScreen(Graphics::Surface *surf);
+
+/**
+ * Creates a thumbnail from a buffer.
+ *
+ * @param surf      destination surface (will always have 16 bpp after this for now)
+ * @param pixels    raw pixel data
+ * @param w         width
+ * @param h         height
+ * @param palette   palette in RGB format
+ */
+extern bool createThumbnail(Graphics::Surface *surf, const uint8 *pixels, int w, int h, const uint8 *palette);
 
 #endif
diff --git a/graphics/scaler/hq2x_i386.asm b/graphics/scaler/hq2x_i386.asm
index ed194441ed..f176c340c1 100644
--- a/graphics/scaler/hq2x_i386.asm
+++ b/graphics/scaler/hq2x_i386.asm
@@ -1840,3 +1840,8 @@ FuncTable2:
     dd ..@cross8, ..@flag0,  ..@flag0,  ..@flag0,
     dd ..@flag0,  ..@flag0,  ..@flag0,  ..@flag0
 
+
+%ifidn __OUTPUT_FORMAT__,elf
+section .note.GNU-stack noalloc noexec nowrite progbits
+%endif
+
diff --git a/graphics/scaler/hq3x_i386.asm b/graphics/scaler/hq3x_i386.asm
index e713fdd51a..8ffb2d5aba 100644
--- a/graphics/scaler/hq3x_i386.asm
+++ b/graphics/scaler/hq3x_i386.asm
@@ -2432,3 +2432,8 @@ FuncTable2:
     dd ..@cross8, ..@flag0,  ..@flag0,  ..@flag0,
     dd ..@flag0,  ..@flag0,  ..@flag0,  ..@flag0
 
+
+%ifidn __OUTPUT_FORMAT__,elf
+section .note.GNU-stack noalloc noexec nowrite progbits
+%endif
+
diff --git a/graphics/scaler/thumbnail.cpp b/graphics/scaler/thumbnail_intern.cpp
index f1caa5d2e5..bdfa0ff5f6 100644
--- a/graphics/scaler/thumbnail.cpp
+++ b/graphics/scaler/thumbnail_intern.cpp
@@ -126,70 +126,93 @@ static bool grabScreen565(Graphics::Surface *surf) {
 	return true;
 }
 
-bool createThumbnailFromScreen(Graphics::Surface* surf) {
-	assert(surf);
-
-	int screenWidth = g_system->getWidth();
-	int screenHeight = g_system->getHeight();
-
-	Graphics::Surface screen;
-
-	if (!grabScreen565(&screen))
-		return false;
+static bool createThumbnail(Graphics::Surface &out, Graphics::Surface &in) {
+	uint16 width = in.w;
+	uint16 inHeight = in.h;
 
-	uint16 width = screenWidth;
-
-	if (screenWidth < 320) {
+	if (width < 320) {
 		// Special case to handle MM NES (uses a screen width of 256)
 		width = 320;
 
 		// center MM NES screen
 		Graphics::Surface newscreen;
-		newscreen.create(width, screen.h, screen.bytesPerPixel);
+		newscreen.create(width, in.h, in.bytesPerPixel);
 
-		uint8 *dst = (uint8*)newscreen.getBasePtr((320 - screenWidth) / 2, 0);
-		uint8 *src = (uint8*)screen.getBasePtr(0, 0);
-		uint16 height = screen.h;
+		uint8 *dst = (uint8*)newscreen.getBasePtr((320 - in.w) / 2, 0);
+		const uint8 *src = (uint8*)in.getBasePtr(0, 0);
+		uint16 height = in.h;
 
 		while (height--) {
-			memcpy(dst, src, screen.pitch);
+			memcpy(dst, src, in.pitch);
 			dst += newscreen.pitch;
-			src += screen.pitch;
+			src += in.pitch;
 		}
 
-		screen.free();
-		screen = newscreen;
-	} else if (screenWidth == 720) {
+		in.free();
+		in = newscreen;
+	} else if (width == 720) {
 		// Special case to handle Hercules mode
 		width = 640;
-		screenHeight = 400;
+		inHeight = 400;
 
 		// cut off menu and so on..
 		Graphics::Surface newscreen;
-		newscreen.create(width, 400, screen.bytesPerPixel);
+		newscreen.create(width, 400, in.bytesPerPixel);
 
-		uint8 *dst = (uint8*)newscreen.getBasePtr(0, (400 - 240) / 2);
-		uint8 *src = (uint8*)screen.getBasePtr(41, 28);
+		uint8 *dst = (uint8*)in.getBasePtr(0, (400 - 240) / 2);
+		const uint8 *src = (uint8*)in.getBasePtr(41, 28);
 
 		for (int y = 0; y < 240; ++y) {
-			memcpy(dst, src, 640 * screen.bytesPerPixel);
+			memcpy(dst, src, 640 * in.bytesPerPixel);
 			dst += newscreen.pitch;
-			src += screen.pitch;
+			src += in.pitch;
 		}
 
-		screen.free();
-		screen = newscreen;
+		in.free();
+		in = newscreen;
 	}
 
-	uint16 newHeight = !(screenHeight % 240) ? kThumbnailHeight2 : kThumbnailHeight1;
+	uint16 newHeight = !(inHeight % 240) ? kThumbnailHeight2 : kThumbnailHeight1;
 
 	int gBitFormatBackUp = gBitFormat;
 	gBitFormat = 565;
-	surf->create(kThumbnailWidth, newHeight, sizeof(uint16));
-	createThumbnail((const uint8*)screen.pixels, width * sizeof(uint16), (uint8*)surf->pixels, surf->pitch, width, screenHeight);
+	out.create(kThumbnailWidth, newHeight, sizeof(uint16));
+	createThumbnail((const uint8 *)in.pixels, width * sizeof(uint16), (uint8 *)out.pixels, out.pitch, width, inHeight);
 	gBitFormat = gBitFormatBackUp;
 
-	screen.free();
+	in.free();
 
 	return true;
 }
+
+bool createThumbnailFromScreen(Graphics::Surface* surf) {
+	assert(surf);
+
+	Graphics::Surface screen;
+
+	if (!grabScreen565(&screen))
+		return false;
+
+	return createThumbnail(*surf, screen);
+}
+
+bool createThumbnail(Graphics::Surface *surf, const uint8 *pixels, int w, int h, const uint8 *palette) {
+	assert(surf);
+
+	Graphics::Surface screen;
+	screen.create(w, h, 2);
+
+	for (uint y = 0; y < screen.h; ++y) {
+		for (uint x = 0; x < screen.w; ++x) {
+			byte r, g, b;
+			r = palette[pixels[y * w + x] * 3];
+			g = palette[pixels[y * w + x] * 3 + 1];
+			b = palette[pixels[y * w + x] * 3 + 2];
+
+			((uint16 *)screen.pixels)[y * screen.w + x] = RGBToColor<ColorMasks<565> >(r, g, b);
+		}
+	}
+
+	return createThumbnail(*surf, screen);
+}
+
diff --git a/graphics/surface.cpp b/graphics/surface.cpp
index a9f3e75886..263a4fd23b 100644
--- a/graphics/surface.cpp
+++ b/graphics/surface.cpp
@@ -66,6 +66,11 @@ void Surface::free() {
 	bytesPerPixel = 0;
 }
 
+void Surface::copyFrom(const Surface &surf) {
+	create(surf.w, surf.h, surf.bytesPerPixel);
+	memcpy(pixels, surf.pixels, h * pitch);
+}
+
 void Surface::hLine(int x, int y, int x2, uint32 color) {
 	// Clipping
 	if (y < 0 || y >= h)
diff --git a/graphics/surface.h b/graphics/surface.h
index ff1ddda695..747bda9a26 100644
--- a/graphics/surface.h
+++ b/graphics/surface.h
@@ -30,7 +30,6 @@
 
 namespace Graphics {
 
-
 /**
  * An arbitrary graphics surface, which can be the target (or source) of blit
  * operations, font rendering, etc.
@@ -67,6 +66,12 @@ struct Surface {
 	 */
 	void free();
 
+	/**
+	 * Copies data from another Surface, this calls *free* on the current surface, to assure
+	 * it being clean.
+	 */
+	void copyFrom(const Surface &surf);
+
 	void drawLine(int x0, int y0, int x1, int y1, uint32 color);
 	void hLine(int x, int y, int x2, uint32 color);
 	void vLine(int x, int y, int y2, uint32 color);
@@ -76,6 +81,18 @@ struct Surface {
 	void move(int dx, int dy, int height);
 };
 
+/**
+ * For safe deletion of surface with SharedPtr.
+ * The deleter assures Surface::free is called on
+ * deletion.
+ */
+struct SharedPtrSurfaceDeleter {
+	void operator()(Surface *ptr) {
+		ptr->free();
+		delete ptr;
+	}
+};
+
 
 } // End of namespace Graphics
 
diff --git a/graphics/thumbnail.cpp b/graphics/thumbnail.cpp
new file mode 100644
index 0000000000..905fea3d93
--- /dev/null
+++ b/graphics/thumbnail.cpp
@@ -0,0 +1,174 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#include "graphics/thumbnail.h"
+#include "graphics/scaler.h"
+#include "common/endian.h"
+#include "common/system.h"
+
+namespace Graphics {
+
+namespace {
+#define THMB_VERSION 1
+
+struct ThumbnailHeader {
+	uint32 type;
+	uint32 size;
+	byte version;
+	uint16 width, height;
+	byte bpp;
+};
+
+#define ThumbnailHeaderSize (4+4+1+2+2+1)
+
+inline void colorToRGB(uint16 color, uint8 &r, uint8 &g, uint8 &b) {
+	r = (((color >> 11) & 0x1F) << 3);
+	g = (((color >> 5) & 0x3F) << 2);
+	b = ((color&0x1F) << 3);
+}
+
+bool loadHeader(Common::SeekableReadStream &in, ThumbnailHeader &header, bool outputWarnings) {
+	header.type = in.readUint32BE();
+	// We also accept the bad 'BMHT' header here, for the sake of compatibility
+	// with some older savegames which were written incorrectly due to a bug in
+	// ScummVM which wrote the thumb header type incorrectly on LE systems.
+	if (header.type != MKID_BE('THMB') && header.type != MKID_BE('BMHT')) {
+		if (outputWarnings)
+			warning("couldn't find thumbnail header type");
+		return false;
+	}
+
+	header.size = in.readUint32BE();
+	header.version = in.readByte();
+
+	if (header.version > THMB_VERSION) {
+		if (outputWarnings)
+			warning("trying to load a newer thumbnail version: %d instead of %d", header.version, THMB_VERSION);
+		return false;
+	}
+
+	header.width = in.readUint16BE();
+	header.height = in.readUint16BE();
+	header.bpp = in.readByte();
+
+	return true;
+}
+} // end of anonymous namespace
+
+bool checkThumbnailHeader(Common::SeekableReadStream &in) {
+	uint32 position = in.pos();
+	ThumbnailHeader header;
+
+	bool hasHeader = loadHeader(in, header, false);
+	
+	in.seek(position, SEEK_SET);
+
+	return hasHeader;
+}
+
+bool skipThumbnailHeader(Common::SeekableReadStream &in) {
+	uint32 position = in.pos();
+	ThumbnailHeader header;
+
+	if (!loadHeader(in, header, false)) {
+		in.seek(position, SEEK_SET);
+		return false;
+	}
+
+	in.seek(header.size - (in.pos() - position), SEEK_CUR);
+	return true;
+}
+
+bool loadThumbnail(Common::SeekableReadStream &in, Graphics::Surface &to) {
+	ThumbnailHeader header;
+
+	if (!loadHeader(in, header, true))
+		return false;
+
+	if (header.bpp != 2) {
+		warning("trying to load thumbnail with unsupported bit depth %d", header.bpp);
+		return false;
+	}
+
+	to.create(header.width, header.height, sizeof(OverlayColor));
+
+	OverlayColor *pixels = (OverlayColor *)to.pixels;
+	for (int y = 0; y < to.h; ++y) {
+		for (int x = 0; x < to.w; ++x) {
+			uint8 r, g, b;
+			colorToRGB(in.readUint16BE(), r, g, b);
+
+			// converting to current OSystem Color
+			*pixels++ = g_system->RGBToColor(r, g, b);
+		}
+	}
+
+	return true;
+}
+
+bool saveThumbnail(Common::WriteStream &out) {
+	Graphics::Surface thumb;
+
+	if (!createThumbnailFromScreen(&thumb)) {
+		warning("Couldn't create thumbnail from screen, aborting thumbnail save");
+		return false;
+	}
+
+	bool success = saveThumbnail(out, thumb);
+	thumb.free();
+
+	return success;
+}
+
+bool saveThumbnail(Common::WriteStream &out, const Graphics::Surface &thumb) {
+	if (thumb.bytesPerPixel != 2) {
+		warning("trying to save thumbnail with bpp different than 2");
+		return false;
+	}
+
+	ThumbnailHeader header;
+	header.type = MKID_BE('THMB');
+	header.size = ThumbnailHeaderSize + thumb.w*thumb.h*thumb.bytesPerPixel;
+	header.version = THMB_VERSION;
+	header.width = thumb.w;
+	header.height = thumb.h;
+	header.bpp = thumb.bytesPerPixel;
+
+	out.writeUint32BE(header.type);
+	out.writeUint32BE(header.size);
+	out.writeByte(header.version);
+	out.writeUint16BE(header.width);
+	out.writeUint16BE(header.height);
+	out.writeByte(header.bpp);
+
+	// TODO: for later this shouldn't be casted to uint16...
+	uint16 *pixels = (uint16 *)thumb.pixels;
+	for (uint16 p = 0; p < thumb.w*thumb.h; ++p, ++pixels)
+		out.writeUint16BE(*pixels);
+
+	return true;
+}
+
+} // end of namespace Graphics
+
diff --git a/graphics/thumbnail.h b/graphics/thumbnail.h
new file mode 100644
index 0000000000..0553306519
--- /dev/null
+++ b/graphics/thumbnail.h
@@ -0,0 +1,69 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#ifndef GRAPHICS_THUMBNAIL_H
+#define GRAPHICS_THUMBNAIL_H
+
+#include "common/stream.h"
+#include "graphics/surface.h"
+
+namespace Graphics {
+
+/**
+ * Checks for presence of the thumbnail save header.
+ * Seeks automatically back to start position after check.
+ *
+ * @param in	stream to check for header
+ */
+bool checkThumbnailHeader(Common::SeekableReadStream &in);
+
+/**
+ * Skips a thumbnail header, if present.
+ *
+ * @param in	stream to process
+ */
+bool skipThumbnailHeader(Common::SeekableReadStream &in);
+
+/**
+ * Lodas a thumbnail from the given input stream.
+ * The loaded thumbnail will be automatically converted to the
+ * current overlay pixelformat.
+ */
+bool loadThumbnail(Common::SeekableReadStream &in, Graphics::Surface &to);
+
+/**
+ * Saves a thumbnail to the given write stream.
+ * Automatically creates a thumbnail from screen contents.
+ */
+bool saveThumbnail(Common::WriteStream &out);
+
+/**
+ * Saves a (given) thumbnail to the given write stream.
+ */
+bool saveThumbnail(Common::WriteStream &out, const Graphics::Surface &thumb);
+
+} // end of namespace Graphics
+
+#endif
+
author	Stephen Kennedy	2008-09-26 21:53:08 +0000
committer	Stephen Kennedy	2008-09-26 21:53:08 +0000
commit	a7bb113e83c88fad3a23d408caa99f918fdb610a (patch)
tree	698dd9d85abaa6a20957bfb9c0e006e9dd1dc8b3 /graphics
parent	11c0a3bdedcdf5eb2618b9db67b559663fb93320 (diff)
parent	c1385076cbc57f1a4a52946a46b3ea06ecf37f37 (diff)
download	scummvm-rg350-a7bb113e83c88fad3a23d408caa99f918fdb610a.tar.gz scummvm-rg350-a7bb113e83c88fad3a23d408caa99f918fdb610a.tar.bz2 scummvm-rg350-a7bb113e83c88fad3a23d408caa99f918fdb610a.zip