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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/idxWiredMoviesandSprites-date.html">Wired Movies and Sprites</a> > <A HREF="javascript:location.replace('index.html');">MovieSprites</A> >
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<table width="680" border="0" cellpadding="0" cellspacing="0">
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<td><h1><div id="pagehead">MovieSprites</div></h1></td>
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<h2>/Common Files/ImageCompressionUtilities.h</h2>
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<p><strong>View Source Code:</strong>
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<option value="listing1.html">/Application Files/ComApplication.c</option>
<option value="listing2.html">/Application Files/ComApplication.h</option>
<option value="listing3.html">/Application Files/ComResource.h</option>
<option value="listing4.html">/Clippings/AddKeyFrameSampleMedia.txt</option>
<option value="listing5.html">/Clippings/AddMovieResource.txt</option>
<option value="listing6.html">/Clippings/AddOverrideSamples.txt</option>
<option value="listing7.html">/Clippings/AddSpritesToKeyFrameSample.txt</option>
<option value="listing8.html">/Clippings/CreateKeyFrameSample.txt</option>
<option value="listing9.html">/Clippings/CreateSpriteMovie.txt</option>
<option value="listing10.html">/Clippings/CreateSpriteTrackAndMedia.txt</option>
<option value="listing11.html">/Common Files/ComFramework.c</option>
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<p><strong><a href="MovieSprites.zip">Download Sample</a></strong> (“MovieSprites.zip”, 2.08M)<BR>
<strong><a href="MovieSprites.dmg">Download Sample</a></strong> (“MovieSprites.dmg”, 2.72M)</p>
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<pre class="sourcecodebox">////////////// File: ImageCompressionUtilities.h//// Contains: Image Compression Utilities.//// Written by: Peter Hoddie, Sean Allen, Chris Flick// Revised by: Tim Monroe//// Copyright: © 1998 by Apple Computer, Inc., all rights reserved.//// Change History (most recent first)://// <2> 03/17/00 rtm moved some things from ImageCompressionUtilities.c to here// <1> 03/27/98 rtm existing file////////////#ifndef __IMAGECOMPRESSIONUTILITIES__#define __IMAGECOMPRESSIONUTILITIES__////////////// header files////////////#ifndef __MOVIES__#include <Movies.h>#endif#ifndef __COLORPICKER__#include <ColorPicker.h>#endif#ifndef __RESOURCES__#include <Resources.h>#endif#ifndef __ENDIAN__#include <Endian.h>#endif#ifndef __IMAGECOMPRESSION__#include <ImageCompression.h>#endif#ifndef __QUICKDRAW__#include <Quickdraw.h>#endif#ifndef PASCAL_RTN#define PASCAL_RTN#endif////////////// compiler macros////////////#define BailIf(a, e) {if (a) { err = e; goto bail; }}#define BailOSErr(a) {if ((err = a) != noErr) goto bail;}#define BailMemErr(a) {a; if ((err = MemError()) != noErr) goto bail;}#if TARGET_OS_WIN32#define GetPortGrafProcs(a) (CQDProcsPtr)a->grafProcs#define SetPortGrafProcs(a,b) a->grafProcs=(CGrafPtr)b#endif////////////// constants////////////#define kCompressDepth 16 // use the Animation compressor at 16 bit depth in these utilities#define kThreshold (255-16)enum { kRecoProcInitMsg = 1, // message and refcon are valid kRecoProcDisposeMsg = 2, // message and refcon are valid kRecoProcGetBoundsMsg = 3, // message, bounds and refcon are valid. Proc fills in bounds with rectangle to use for compressed image. kRecoProcDrawMsg = 4 // message, bounds, drawingPort, portType and refcon are valid. portType is 'imag' if drawing into // image GWorld, 'imap' if drawing into hit testing GWorld.};enum { kRecoProcOriginalImageType = FOUR_CHAR_CODE('imag'), kRecoProcHitTestingImageType = FOUR_CHAR_CODE('imap')};////////////// data types////////////// used for compressing QuickDraw pictures with transparency/hittestingtypedef struct { PicHandle picture;} PictureCompressProcData;// used for recompressing QuickTime compressed data with transparency/hittestingtypedef struct { ImageDescriptionHandle imageDesc; Handle imageData;} CompressedImageCompressProcData;// used for extracting QuickTime compressed image data and description, if any, from a QuickDraw picturetypedef struct { CGrafPtr tempPort; Handle data; ImageDescriptionHandle idh;} extractPictRecord;// low-level callback procedure based routine to compress with/without transparency & hit-testingtypedef PASCAL_RTN OSErr (*CompressDrawProc)( short message, Rect * bounds, GWorldPtr drawingPort, OSType drawingImageType, void * refcon );////////////// function prototypes////////////OSErr ExtractCompressData ( PicHandle thePict, Handle *dataOut, ImageDescriptionHandle *idh );PASCAL_RTN void extractStdPix ( PixMap *src, Rect *srcRect, MatrixRecord *matrix, short mode, RgnHandle mask, PixMap *matte, Rect *matteRect, short flags );PASCAL_RTN void noDitherBitsProc (BitMap *srcBits, Rect *srcRect, Rect *dstRect, short mode, RgnHandle maskRgn);// utilities for compressing from various types of sourcesOSErr RecompressWithTransparencyFromProc ( CompressDrawProc drawProc, void * drawProcRefcon, Boolean includeHitTesting, RGBColor *keyColor, RgnHandle hitTestRegion, ImageDescriptionHandle *idh, Handle * imageData ); OSErr RecompressCompressedImageWithTransparency ( ImageDescriptionHandle originalDesc, Handle originalImageData, RGBColor *keyColor, RgnHandle limitHitTestRegion, ImageDescriptionHandle *idh, Handle * imageData ); OSErr RecompressPictureWithTransparency ( PicHandle originalPicture, RGBColor *keyColor, RgnHandle limitHitTestRegion, ImageDescriptionHandle *idh, Handle * imageData ); OSErr RecompressPictureFileWithTransparency ( FSSpec * spec, RGBColor *keyColor, RgnHandle limitHitTestRegion, ImageDescriptionHandle *idh, Handle * imageData ); #endif // __IMAGECOMPRESSIONUTILITIES__</pre>
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