add QuickLook plugin for OS X, it’s embedded in the .app

PanoPainter.xcodeproj/project.pbxproj

@@ -199,6 +199,10 @@
 		ADE4911F1F86E65E00FB8E92 /* sweep.cc in Sources */ = {isa = PBXBuildFile; fileRef = ADE491131F86D09100FB8E92 /* sweep.cc */; };
 		ADEBA9062069A4F40085AE16 /* objc_utils.cpp in Sources */ = {isa = PBXBuildFile; fileRef = ADEBA9052069A4F40085AE16 /* objc_utils.cpp */; };
 		ADEBA9092069A50E0085AE16 /* objc_utils.cpp in Sources */ = {isa = PBXBuildFile; fileRef = ADEBA9082069A50E0085AE16 /* objc_utils.cpp */; };
+		ADFD32152166AA0800F46F85 /* GenerateThumbnailForURL.c in Sources */ = {isa = PBXBuildFile; fileRef = ADFD32142166AA0800F46F85 /* GenerateThumbnailForURL.c */; };
+		ADFD32172166AA0800F46F85 /* GeneratePreviewForURL.c in Sources */ = {isa = PBXBuildFile; fileRef = ADFD32162166AA0800F46F85 /* GeneratePreviewForURL.c */; };
+		ADFD32192166AA0800F46F85 /* main.c in Sources */ = {isa = PBXBuildFile; fileRef = ADFD32182166AA0800F46F85 /* main.c */; };
+		ADFD32222166AB2F00F46F85 /* QLPlugin.qlgenerator in CopyFiles */ = {isa = PBXBuildFile; fileRef = ADFD32122166AA0800F46F85 /* QLPlugin.qlgenerator */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -251,6 +255,16 @@
 			name = "Embed App Extensions";
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		ADFD32202166AA6000F46F85 /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = Contents/Library/QuickLook;
+			dstSubfolderSpec = 1;
+			files = (
+				ADFD32222166AB2F00F46F85 /* QLPlugin.qlgenerator in CopyFiles */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
@@ -450,6 +464,12 @@
 		ADEBA9052069A4F40085AE16 /* objc_utils.cpp */ = {isa = PBXFileReference; explicitFileType = sourcecode.cpp.objcpp; fileEncoding = 4; name = objc_utils.cpp; path = src/objc_utils.cpp; sourceTree = SOURCE_ROOT; };
 		ADEBA9072069A50E0085AE16 /* objc_utils.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = objc_utils.h; path = src/objc_utils.h; sourceTree = SOURCE_ROOT; };
 		ADEBA9082069A50E0085AE16 /* objc_utils.cpp */ = {isa = PBXFileReference; explicitFileType = sourcecode.cpp.objcpp; fileEncoding = 4; name = objc_utils.cpp; path = src/objc_utils.cpp; sourceTree = SOURCE_ROOT; };
+		ADFD32122166AA0800F46F85 /* QLPlugin.qlgenerator */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = QLPlugin.qlgenerator; sourceTree = BUILT_PRODUCTS_DIR; };
+		ADFD32142166AA0800F46F85 /* GenerateThumbnailForURL.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = GenerateThumbnailForURL.c; sourceTree = "<group>"; };
+		ADFD32162166AA0800F46F85 /* GeneratePreviewForURL.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = GeneratePreviewForURL.c; sourceTree = "<group>"; };
+		ADFD32182166AA0800F46F85 /* main.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = main.c; sourceTree = "<group>"; };
+		ADFD321A2166AA0800F46F85 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		ADFD32232166B12A00F46F85 /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -512,6 +532,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		ADFD320E2166AA0800F46F85 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
@@ -663,6 +690,7 @@
 				AD0E5C9D1ECC6F2B00C35669 /* PanoPainter-OSX */,
 				AD787AE020D4611100C4712A /* PanoQL */,
 				AD787AF420D4637E00C4712A /* PanoThumb */,
+				ADFD32132166AA0800F46F85 /* QLPlugin */,
 				AD58E0501E107411006ACC15 /* Products */,
 				AD759B631F2793AD00211963 /* Frameworks */,
 			);
@@ -675,6 +703,7 @@
 				AD0E5C9C1ECC6F2B00C35669 /* PanoPainter.app */,
 				AD787ADD20D4611100C4712A /* PanoQL.appex */,
 				AD787AF320D4637E00C4712A /* PanoThumb.appex */,
+				ADFD32122166AA0800F46F85 /* QLPlugin.qlgenerator */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -751,6 +780,7 @@
 		AD759B631F2793AD00211963 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				ADFD32232166B12A00F46F85 /* Foundation.framework */,
 				AD06989820CC6C3E0010825F /* OSX */,
 				AD06989520CC6C210010825F /* iOS */,
 				AD3087C72061D1CD009F9260 /* CoreGraphics.framework */,
@@ -837,8 +867,29 @@
 			name = p2t;
 			sourceTree = "<group>";
 		};
+		ADFD32132166AA0800F46F85 /* QLPlugin */ = {
+			isa = PBXGroup;
+			children = (
+				ADFD32142166AA0800F46F85 /* GenerateThumbnailForURL.c */,
+				ADFD32162166AA0800F46F85 /* GeneratePreviewForURL.c */,
+				ADFD32182166AA0800F46F85 /* main.c */,
+				ADFD321A2166AA0800F46F85 /* Info.plist */,
+			);
+			path = QLPlugin;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
+/* Begin PBXHeadersBuildPhase section */
+		ADFD320F2166AA0800F46F85 /* Headers */ = {
+			isa = PBXHeadersBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXHeadersBuildPhase section */
+
 /* Begin PBXNativeTarget section */
 		AD0E5C9B1ECC6F2B00C35669 /* PanoPainter-OSX */ = {
 			isa = PBXNativeTarget;
@@ -850,6 +901,7 @@
 				AD0E5C9A1ECC6F2B00C35669 /* Resources */,
 				AD2286BB214E96E60074567E /* Versioning Info.plist */,
 				AD30D8201F783B5600B6A112 /* CopyFiles */,
+				ADFD32202166AA6000F46F85 /* CopyFiles */,
 				ADC8F77421665FD20084ECAD /* Hockeyapp */,
 			);
 			buildRules = (
@@ -923,6 +975,24 @@
 			productReference = ADD7D26B1EBF9AE300D5A897 /* PanoPainter.app */;
 			productType = "com.apple.product-type.application";
 		};
+		ADFD32112166AA0800F46F85 /* QLPlugin */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = ADFD321D2166AA0800F46F85 /* Build configuration list for PBXNativeTarget "QLPlugin" */;
+			buildPhases = (
+				ADFD320D2166AA0800F46F85 /* Sources */,
+				ADFD320E2166AA0800F46F85 /* Frameworks */,
+				ADFD320F2166AA0800F46F85 /* Headers */,
+				ADFD32102166AA0800F46F85 /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = QLPlugin;
+			productName = QLPlugin;
+			productReference = ADFD32122166AA0800F46F85 /* QLPlugin.qlgenerator */;
+			productType = "com.apple.product-type.bundle";
+		};
 /* End PBXNativeTarget section */
 
 /* Begin PBXProject section */
@@ -956,6 +1026,11 @@
 						CreatedOnToolsVersion = 7.2;
 						DevelopmentTeam = ERD9AYQ49S;
 					};
+					ADFD32112166AA0800F46F85 = {
+						CreatedOnToolsVersion = 9.4.1;
+						DevelopmentTeam = ERD9AYQ49S;
+						ProvisioningStyle = Automatic;
+					};
 				};
 			};
 			buildConfigurationList = AD58E04A1E107411006ACC15 /* Build configuration list for PBXProject "PanoPainter" */;
@@ -975,6 +1050,7 @@
 				AD0E5C9B1ECC6F2B00C35669 /* PanoPainter-OSX */,
 				AD787ADC20D4611100C4712A /* PanoQL */,
 				AD787AF220D4637E00C4712A /* PanoThumb */,
+				ADFD32112166AA0800F46F85 /* QLPlugin */,
 			);
 		};
 /* End PBXProject section */
@@ -1017,6 +1093,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		ADFD32102166AA0800F46F85 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXShellScriptBuildPhase section */
@@ -1339,6 +1422,16 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		ADFD320D2166AA0800F46F85 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				ADFD32152166AA0800F46F85 /* GenerateThumbnailForURL.c in Sources */,
+				ADFD32172166AA0800F46F85 /* GeneratePreviewForURL.c in Sources */,
+				ADFD32192166AA0800F46F85 /* main.c in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXSourcesBuildPhase section */
 
 /* Begin PBXTargetDependency section */
@@ -1811,6 +1904,54 @@
 			};
 			name = Release;
 		};
+		ADFD321B2166AA0800F46F85 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CODE_SIGN_IDENTITY = "Mac Developer";
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				DEVELOPMENT_TEAM = ERD9AYQ49S;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				INFOPLIST_FILE = QLPlugin/Info.plist;
+				INSTALL_PATH = /Library/QuickLook;
+				MACOSX_DEPLOYMENT_TARGET = 10.7;
+				PRODUCT_BUNDLE_IDENTIFIER = com.omixlab.panopainter.osx.QLPlugin;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				WRAPPER_EXTENSION = qlgenerator;
+			};
+			name = Debug;
+		};
+		ADFD321C2166AA0800F46F85 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CODE_SIGN_IDENTITY = "Mac Developer";
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				DEVELOPMENT_TEAM = ERD9AYQ49S;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				INFOPLIST_FILE = QLPlugin/Info.plist;
+				INSTALL_PATH = /Library/QuickLook;
+				MACOSX_DEPLOYMENT_TARGET = 10.7;
+				PRODUCT_BUNDLE_IDENTIFIER = com.omixlab.panopainter.osx.QLPlugin;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				WRAPPER_EXTENSION = qlgenerator;
+			};
+			name = Release;
+		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
@@ -1859,6 +2000,15 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		ADFD321D2166AA0800F46F85 /* Build configuration list for PBXNativeTarget "QLPlugin" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				ADFD321B2166AA0800F46F85 /* Debug */,
+				ADFD321C2166AA0800F46F85 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 /* End XCConfigurationList section */
 	};
 	rootObject = AD58E0471E107411006ACC15 /* Project object */;

QLPlugin/GeneratePreviewForURL.c

@@ -0,0 +1,23 @@
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreServices/CoreServices.h>
+#include <QuickLook/QuickLook.h>
+
+OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options);
+void CancelPreviewGeneration(void *thisInterface, QLPreviewRequestRef preview);
+
+/* -----------------------------------------------------------------------------
+   Generate a preview for file
+
+   This function's job is to create preview for designated file
+   ----------------------------------------------------------------------------- */
+
+OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options)
+{
+    // To complete your generator please implement the function GeneratePreviewForURL in GeneratePreviewForURL.c
+    return noErr;
+}
+
+void CancelPreviewGeneration(void *thisInterface, QLPreviewRequestRef preview)
+{
+    // Implement only if supported
+}

QLPlugin/GenerateThumbnailForURL.c

@@ -0,0 +1,102 @@
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreServices/CoreServices.h>
+#include <QuickLook/QuickLook.h>
+
+OSStatus GenerateThumbnailForURL(void *thisInterface, QLThumbnailRequestRef thumbnail, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options, CGSize maxSize);
+void CancelThumbnailGeneration(void *thisInterface, QLThumbnailRequestRef thumbnail);
+
+/* -----------------------------------------------------------------------------
+    Generate a thumbnail for file
+
+   This function's job is to create thumbnail for designated file as fast as possible
+   ----------------------------------------------------------------------------- */
+
+struct PPIThumb
+{
+    int width;
+    int height;
+    int comp;
+    /*
+    bool valid()
+    {
+        return (width == 128 && height == 128 && comp == 4);
+    }
+    */
+};
+
+struct PPIDocVersion
+{
+    int major;
+    int minor;
+};
+
+struct PPISoftVersion
+{
+    int major;
+    int minor;
+    int fix;
+    int build;
+};
+
+struct PPIHeader
+{
+    char magic[4];
+    struct PPIDocVersion doc_version;
+    struct PPISoftVersion soft_version;
+    struct PPIThumb thumb_header;
+    /*
+    bool valid()
+    {
+        if (strcmp(magic, "PPI") != 0)
+            return false;
+        if (doc_version.major != 0 || doc_version.minor != 1)
+            return false;
+        if (!thumb_header.valid())
+            return false;
+        return true;
+    }
+    */
+};
+
+OSStatus GenerateThumbnailForURL(void *thisInterface, QLThumbnailRequestRef thumbnail, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options, CGSize maxSize)
+{
+    // To complete your generator please implement the function GenerateThumbnailForURL in GenerateThumbnailForURL.c
+    //maxSize = CGSizeMake(128, 128);
+    CGContextRef context = QLThumbnailRequestCreateContext(thumbnail, maxSize, true, NULL);
+    CGRect renderRect = CGRectMake(0., 0., maxSize.width, maxSize.height);
+    
+    CFStringRef path = CFURLCopyFileSystemPath(url, kCFURLPOSIXPathStyle);
+    const char* path_string = CFStringGetCStringPtr(path, kCFStringEncodingUTF8);
+    
+    FILE* fp = fopen(path_string, "rb");
+    if (fp)
+    {
+        struct PPIHeader header;
+        fread(&header, sizeof(struct PPIHeader), 1, fp);
+        int w = header.thumb_header.width;
+        int h = header.thumb_header.height;
+        int c = header.thumb_header.comp;
+
+        CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+        CGContextRef bmp = CGBitmapContextCreate(NULL, w, h, 8, w * c, colorSpace, kCGImageAlphaPremultipliedLast);
+        uint8_t* data = CGBitmapContextGetData(bmp);
+        fread(data, w * h * c, 1, fp);
+        fclose(fp);
+        
+        CGImageRef img = CGBitmapContextCreateImage(bmp);
+        CGContextDrawImage(context, renderRect, img);
+    }
+    else
+    {
+        CGContextSetRGBFillColor(context, 1, 0, 0, 1);
+        CGContextFillRect(context, CGRectMake(0, 0, maxSize.width, maxSize.height));
+    }
+    QLThumbnailRequestFlushContext(thumbnail, context);
+    CFRelease(context);
+    return noErr;
+}
+
+void CancelThumbnailGeneration(void *thisInterface, QLThumbnailRequestRef thumbnail)
+{
+    // Implement only if supported
+}

QLPlugin/Info.plist

@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDocumentTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeExtensions</key>
+			<array>
+				<string>ppi</string>
+			</array>
+			<key>CFBundleTypeMIMETypes</key>
+			<array>
+				<string>image/ppi</string>
+			</array>
+			<key>CFBundleTypeName</key>
+			<string>PPI</string>
+			<key>CFBundleTypeRole</key>
+			<string>QLGenerator</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>public.panorama-image</string>
+			</array>
+		</dict>
+	</array>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>CFPlugInDynamicRegisterFunction</key>
+	<string></string>
+	<key>CFPlugInDynamicRegistration</key>
+	<string>NO</string>
+	<key>CFPlugInFactories</key>
+	<dict>
+		<key>10D308F3-0D60-4B28-A618-2A599683A839</key>
+		<string>QuickLookGeneratorPluginFactory</string>
+	</dict>
+	<key>CFPlugInTypes</key>
+	<dict>
+		<key>5E2D9680-5022-40FA-B806-43349622E5B9</key>
+		<array>
+			<string>10D308F3-0D60-4B28-A618-2A599683A839</string>
+		</array>
+	</dict>
+	<key>CFPlugInUnloadFunction</key>
+	<string></string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2018 OmixLab ltd. All rights reserved.</string>
+	<key>QLNeedsToBeRunInMainThread</key>
+	<false/>
+	<key>QLPreviewHeight</key>
+	<real>600</real>
+	<key>QLPreviewWidth</key>
+	<real>800</real>
+	<key>QLSupportsConcurrentRequests</key>
+	<false/>
+	<key>QLThumbnailMinimumSize</key>
+	<real>17</real>
+	<key>UTImportedTypeDeclarations</key>
+	<array>
+		<dict>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.data</string>
+			</array>
+			<key>UTTypeIdentifier</key>
+			<string>public.panorama-image</string>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.mime-type</key>
+				<string>image/ppi</string>
+				<key>public.filename-extension</key>
+				<array>
+					<string>ppi</string>
+				</array>
+			</dict>
+		</dict>
+	</array>
+</dict>
+</plist>

QLPlugin/main.c

@@ -0,0 +1,218 @@
+//==============================================================================
+//
+//  DO NO MODIFY THE CONTENT OF THIS FILE
+//
+//  This file contains the generic CFPlug-in code necessary for your generator
+//  To complete your generator implement the function in GenerateThumbnailForURL/GeneratePreviewForURL.c
+//
+//==============================================================================
+
+
+
+
+
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreFoundation/CFPlugInCOM.h>
+#include <CoreServices/CoreServices.h>
+#include <QuickLook/QuickLook.h>
+
+// -----------------------------------------------------------------------------
+//  constants
+// -----------------------------------------------------------------------------
+
+// Don't modify this line
+#define PLUGIN_ID "B8F1FFE9-38A4-46C0-A51A-75C338E4C87E"
+
+//
+// Below is the generic glue code for all plug-ins.
+//
+// You should not have to modify this code aside from changing
+// names if you decide to change the names defined in the Info.plist
+//
+
+
+// -----------------------------------------------------------------------------
+//  typedefs
+// -----------------------------------------------------------------------------
+
+// The thumbnail generation function to be implemented in GenerateThumbnailForURL.c
+OSStatus GenerateThumbnailForURL(void *thisInterface, QLThumbnailRequestRef thumbnail, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options, CGSize maxSize);
+void CancelThumbnailGeneration(void* thisInterface, QLThumbnailRequestRef thumbnail);
+
+// The preview generation function to be implemented in GeneratePreviewForURL.c
+OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options);
+void CancelPreviewGeneration(void *thisInterface, QLPreviewRequestRef preview);
+
+// The layout for an instance of QuickLookGeneratorPlugIn
+typedef struct __QuickLookGeneratorPluginType
+{
+    void        *conduitInterface;
+    CFUUIDRef    factoryID;
+    UInt32       refCount;
+} QuickLookGeneratorPluginType;
+
+// -----------------------------------------------------------------------------
+//  prototypes
+// -----------------------------------------------------------------------------
+//  Forward declaration for the IUnknown implementation.
+//
+
+QuickLookGeneratorPluginType  *AllocQuickLookGeneratorPluginType(CFUUIDRef inFactoryID);
+void                         DeallocQuickLookGeneratorPluginType(QuickLookGeneratorPluginType *thisInstance);
+HRESULT                      QuickLookGeneratorQueryInterface(void *thisInstance,REFIID iid,LPVOID *ppv);
+void                        *QuickLookGeneratorPluginFactory(CFAllocatorRef allocator,CFUUIDRef typeID);
+ULONG                        QuickLookGeneratorPluginAddRef(void *thisInstance);
+ULONG                        QuickLookGeneratorPluginRelease(void *thisInstance);
+
+// -----------------------------------------------------------------------------
+//  myInterfaceFtbl  definition
+// -----------------------------------------------------------------------------
+//  The QLGeneratorInterfaceStruct function table.
+//
+static QLGeneratorInterfaceStruct myInterfaceFtbl = {
+    NULL,
+    QuickLookGeneratorQueryInterface,
+    QuickLookGeneratorPluginAddRef,
+    QuickLookGeneratorPluginRelease,
+    NULL,
+    NULL,
+    NULL,
+    NULL
+};
+
+
+// -----------------------------------------------------------------------------
+//  AllocQuickLookGeneratorPluginType
+// -----------------------------------------------------------------------------
+//  Utility function that allocates a new instance.
+//      You can do some initial setup for the generator here if you wish
+//      like allocating globals etc...
+//
+QuickLookGeneratorPluginType *AllocQuickLookGeneratorPluginType(CFUUIDRef inFactoryID)
+{
+    QuickLookGeneratorPluginType *theNewInstance;
+
+    theNewInstance = (QuickLookGeneratorPluginType *)malloc(sizeof(QuickLookGeneratorPluginType));
+    memset(theNewInstance,0,sizeof(QuickLookGeneratorPluginType));
+
+        /* Point to the function table Malloc enough to store the stuff and copy the filler from myInterfaceFtbl over */
+    theNewInstance->conduitInterface = malloc(sizeof(QLGeneratorInterfaceStruct));
+    memcpy(theNewInstance->conduitInterface,&myInterfaceFtbl,sizeof(QLGeneratorInterfaceStruct));
+
+        /*  Retain and keep an open instance refcount for each factory. */
+    theNewInstance->factoryID = CFRetain(inFactoryID);
+    CFPlugInAddInstanceForFactory(inFactoryID);
+
+        /* This function returns the IUnknown interface so set the refCount to one. */
+    theNewInstance->refCount = 1;
+    return theNewInstance;
+}
+
+// -----------------------------------------------------------------------------
+//  DeallocQuickLookGeneratorPluginType
+// -----------------------------------------------------------------------------
+//  Utility function that deallocates the instance when
+//  the refCount goes to zero.
+//      In the current implementation generator interfaces are never deallocated
+//      but implement this as this might change in the future
+//
+void DeallocQuickLookGeneratorPluginType(QuickLookGeneratorPluginType *thisInstance)
+{
+    CFUUIDRef theFactoryID;
+
+    theFactoryID = thisInstance->factoryID;
+        /* Free the conduitInterface table up */
+    free(thisInstance->conduitInterface);
+
+        /* Free the instance structure */
+    free(thisInstance);
+    if (theFactoryID){
+        CFPlugInRemoveInstanceForFactory(theFactoryID);
+        CFRelease(theFactoryID);
+    }
+}
+
+// -----------------------------------------------------------------------------
+//  QuickLookGeneratorQueryInterface
+// -----------------------------------------------------------------------------
+//  Implementation of the IUnknown QueryInterface function.
+//
+HRESULT QuickLookGeneratorQueryInterface(void *thisInstance,REFIID iid,LPVOID *ppv)
+{
+    CFUUIDRef interfaceID;
+
+    interfaceID = CFUUIDCreateFromUUIDBytes(kCFAllocatorDefault,iid);
+
+    if (CFEqual(interfaceID,kQLGeneratorCallbacksInterfaceID)){
+            /* If the Right interface was requested, bump the ref count,
+             * set the ppv parameter equal to the instance, and
+             * return good status.
+             */
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType *)thisInstance)->conduitInterface)->GenerateThumbnailForURL = GenerateThumbnailForURL;
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType *)thisInstance)->conduitInterface)->CancelThumbnailGeneration = CancelThumbnailGeneration;
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType *)thisInstance)->conduitInterface)->GeneratePreviewForURL = GeneratePreviewForURL;
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType *)thisInstance)->conduitInterface)->CancelPreviewGeneration = CancelPreviewGeneration;
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType*)thisInstance)->conduitInterface)->AddRef(thisInstance);
+        *ppv = thisInstance;
+        CFRelease(interfaceID);
+        return S_OK;
+    }else{
+        /* Requested interface unknown, bail with error. */
+        *ppv = NULL;
+        CFRelease(interfaceID);
+        return E_NOINTERFACE;
+    }
+}
+
+// -----------------------------------------------------------------------------
+// QuickLookGeneratorPluginAddRef
+// -----------------------------------------------------------------------------
+//  Implementation of reference counting for this type. Whenever an interface
+//  is requested, bump the refCount for the instance. NOTE: returning the
+//  refcount is a convention but is not required so don't rely on it.
+//
+ULONG QuickLookGeneratorPluginAddRef(void *thisInstance)
+{
+    ((QuickLookGeneratorPluginType *)thisInstance )->refCount += 1;
+    return ((QuickLookGeneratorPluginType*) thisInstance)->refCount;
+}
+
+// -----------------------------------------------------------------------------
+// QuickLookGeneratorPluginRelease
+// -----------------------------------------------------------------------------
+//  When an interface is released, decrement the refCount.
+//  If the refCount goes to zero, deallocate the instance.
+//
+ULONG QuickLookGeneratorPluginRelease(void *thisInstance)
+{
+    ((QuickLookGeneratorPluginType*)thisInstance)->refCount -= 1;
+    if (((QuickLookGeneratorPluginType*)thisInstance)->refCount == 0){
+        DeallocQuickLookGeneratorPluginType((QuickLookGeneratorPluginType*)thisInstance );
+        return 0;
+    }else{
+        return ((QuickLookGeneratorPluginType*) thisInstance )->refCount;
+    }
+}
+
+// -----------------------------------------------------------------------------
+//  QuickLookGeneratorPluginFactory
+// -----------------------------------------------------------------------------
+void *QuickLookGeneratorPluginFactory(CFAllocatorRef allocator,CFUUIDRef typeID)
+{
+    QuickLookGeneratorPluginType *result;
+    CFUUIDRef                 uuid;
+
+        /* If correct type is being requested, allocate an
+         * instance of kQLGeneratorTypeID and return the IUnknown interface.
+         */
+    if (CFEqual(typeID,kQLGeneratorTypeID)){
+        uuid = CFUUIDCreateFromString(kCFAllocatorDefault,CFSTR(PLUGIN_ID));
+        result = AllocQuickLookGeneratorPluginType(uuid);
+        CFRelease(uuid);
+        return result;
+    }
+        /* If the requested type is incorrect, return NULL. */
+    return NULL;
+}
+