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/*******************************************************************************
Copyright (c) 2009, Limbic Software, Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the Limbic Software, Inc. nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY LIMBIC SOFTWARE, INC. ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL LIMBIC SOFTWARE, INC. BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
******************************************************************************/
//==============================================================================
//
// 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 "D6FBBD65-F3EB-47D2-B33E-8F9EB829ABBB"
//
// 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;
}
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