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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/QuickTime/index.html">QuickTime</a> > <a href="../../samplecode/QuickTime/idxVideoEffectsTransitions-date.html">Video Effects & Transitions</a> > <A HREF="javascript:location.replace('index.html');">GreyscaleEffectSample</A> >
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<td><h1><div id="pagehead">GreyscaleEffectSample</div></h1></td>
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<h2>/EffectDispatch.h</h2>
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<p><strong>View Source Code:</strong>
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<p><strong><a href="GreyscaleEffectSample.zip">Download Sample</a></strong> (“GreyscaleEffectSample.zip”, 458.7K)<BR>
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<pre class="sourcecodebox">/* File: EffectDispatch.h Description: Effect Dispatcher Author: era Copyright: © Copyright 2002 Apple Computer, Inc. All rights reserved. Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in consideration of your agreement to the following terms, and your use, installation, modification or redistribution of this Apple software constitutes acceptance of these terms. If you do not agree with these terms, please do not use, install, modify or redistribute this Apple software. In consideration of your agreement to abide by the following terms, and subject to these terms, Apple grants you a personal, non-exclusive license, under Apple's copyrights in this original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the Apple Software, with or without modifications, in source and/or binary forms; provided that if you redistribute the Apple Software in its entirety and without modifications, you must retain this notice and the following text and disclaimers in all such redistributions of the Apple Software. Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to endorse or promote products derived from the Apple Software without specific prior written permission from Apple. Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by Apple herein, including but not limited to any patent rights that may be infringed by your derivative works or by other works in which the Apple Software may be incorporated. The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Change History (most recent first): <1> 05/18/02 era first file*//* A Quick Course in ComponentDispatchHelper.c ComponentRangeCount The number (0 based) of discrete, continuous ranges of selectors that are used in the macro. The 'range shift' & 'range mask' determine the size of the range. ComponentRangeShift ComponentRangeMask The mask == 2^shift -1. This is used to define size of the range of selectors. For ImageCodecs, the ranges are in size of 0x100: Range 0 = -0xFF to -0x01 Standard Component Calls Range 1 = 0x000 to 0x0FF Generic codecs Range 2 = 0x100 to 0x1FF Specific to QT Photo JPEG codecs Range 3 = 0x200 to 0x2FF Base Decompressor Client codecs Range 4 = 0x300 to 0x3FF Effect codecs ComponentRangeBegin & ComponentRangeEnd Use these macros to bracket the start/stop of each range of selectors. First range use (0), for the Nth range use (N-1). ComponentRangeUnused Used to skip a range of selectors. ComponentSelectorOffset Since the 'default' selectors are negative numbers, an offset must be specified. For example, if the first default selector supported was kComponentUnregisterSelect (-7), then the offset would have to be 7. StdComponentCall Used to dispatch to one of the standard compoenent routines, such as Open(), Close(), Register(), etc. that are implemented in the component. ComponentError Returns an error without trying to do anything. Use this for the selectors that will NEVER be implmented or delegated. Additionally, it can be used to fill in a 'blank' in a range of selectors to get the range continuous. For example, if there were selectors that corresponded to 10,11,12, 14, but NO 13, merely put ComponentError (0) between the selectors for 12 & 14. ComponentNoError Returns 'noErr' without trying to do anything. ComponentDelegate Delagates the call to the specified delagate component. ComponentCall This dispatches to the appropriate routine in that is implemented in the component. ComponentComment Allows comments to be placed in the big macro.*/ ComponentSelectorOffset (8) ComponentRangeCount (4) ComponentRangeShift (8) ComponentRangeMask (FF) ComponentStorageType (Ptr) ComponentDelegateByteOffset (8) ComponentRangeBegin (0) ComponentDelegate (GetMPWorkFunction) ComponentDelegate (Unregister) StdComponentCall (Target) ComponentDelegate (Register) StdComponentCall (Version) StdComponentCall (CanDo) StdComponentCall (Close) StdComponentCall (Open) ComponentRangeEnd (0) ComponentRangeBegin (1) ComponentCall (GetCodecInfo) ComponentDelegate (GetCompressionTime) ComponentDelegate (GetMaxCompressionSize) ComponentDelegate (PreCompress) ComponentDelegate (BandCompress) ComponentDelegate (PreDecompress) ComponentDelegate (BandDecompress) ComponentDelegate (Busy) ComponentDelegate (GetCompressedImageSize) ComponentDelegate (GetSimilarity) ComponentDelegate (TrimImage) ComponentDelegate (RequestSettings) ComponentDelegate (GetSettings) ComponentDelegate (SetSettings) ComponentDelegate (Flush) ComponentDelegate (SetTimeCode) ComponentDelegate (IsImageDescriptionEquivalent) ComponentDelegate (NewMemory) ComponentDelegate (DisposeMemory) ComponentDelegate (HitTestData) ComponentDelegate (NewImageBufferMemory) ComponentDelegate (ExtractAndCombineFields) ComponentDelegate (GetMaxCompressionSizeWithSources) ComponentDelegate (SetTimeBase) ComponentDelegate (SourceChanged) ComponentDelegate (FlushLastFrame) ComponentDelegate (GetSettingsAsText) ComponentCall (GetParameterListHandle) ComponentDelegate (GetParameterList) ComponentDelegate (CreateStandardParameterDialog) ComponentDelegate (IsStandardParameterDialogEvent) ComponentDelegate (DismissStandardParameterDialog) ComponentDelegate (StandardParameterDialogDoAction) ComponentDelegate (NewImageGWorld) ComponentDelegate (DisposeImageGWorld) ComponentDelegate (HitTestDataWithFlags) ComponentDelegate (ValidateParameters) ComponentDelegate (GetBaseMPWorkFunction) ComponentDelegate (RequestGammaLevel) ComponentDelegate (GetSourceDataGammaLevel) ComponentDelegate (GetDecompressLatency) ComponentRangeEnd (1) ComponentRangeUnused (2) ComponentRangeUnused (3) ComponentRangeBegin (4) ComponentComment ("Range4 Selectors (0x300 - 0x3FF) belong to the 'Effects'") ComponentCall (EffectSetup) ComponentCall (EffectBegin) ComponentCall (EffectRenderFrame) ComponentDelegate (EffectConvertEffectSourceToFormat) ComponentNoError (EffectCancel) ComponentCall (EffectGetSpeed) ComponentRangeEnd (4)</pre>
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