/*

    File:       DrawCMYK.c

    Description: This example demonstrates QuickTimes support for rendering using the CMYK colorspace.

                 Test Image: Sample 10-AlisaCMYK.jpg

                 Note: Nothing will draw if the image does not contain a kImageDescriptionColorSpace

                       extention.

    Author:     QuickTime engineering

    Copyright:  © Copyright 1999 - 2005 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

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                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

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    Change History (most recent first): <2> 4/22/02 released as dts sample code

                                        <1> 4/1/99 initial release

*/

#include "MacShell.h"

void DrawCMYK( void )

{

    OSErr err = noErr;

    Handle hOpenTypeList = NewHandle(0);

    long   numTypes = 0;

    FSSpec theFSSpec;

    GraphicsImportComponent importer = 0;

    Rect naturalBounds, windowBounds;

    ImageDescriptionHandle desc = NULL, offscreenDesc = NULL;

    Handle h = NULL;

    OSType pixelFormat;

    GWorldPtr gworld = NULL;

    PixMapHandle pixmap;

    MatrixRecord matrix;

    ImageSequence imageSequence = 0;

    BuildGraphicsImporterValidFileTypes( hOpenTypeList, &numTypes );

    HLock( hOpenTypeList );

    err = GetOneFileWithPreview(numTypes, (OSTypePtr)*hOpenTypeList, &theFSSpec, NULL);

    DisposeHandle( hOpenTypeList );

    if ( err ) return;

    // locate and open a graphics importer component

    err = GetGraphicsImporterForFile( &theFSSpec, &importer );

    if ( err ) return;

    // find out the real colorspace.

    err = GraphicsImportGetImageDescription( importer, &desc );

    if ( err ) return;

    err = GetImageDescriptionExtension( desc, &h, kImageDescriptionColorSpace, 1 );

    if( !h || !*h ) return;

    pixelFormat = *(OSType*)*h;

    pixelFormat = EndianU32_BtoN(pixelFormat);

    printf( "Pixel Format: %c%c%c%c\n", (char)(pixelFormat>>24), (char)(pixelFormat>>16), 

                            (char)(pixelFormat>>8), (char)pixelFormat);

    // Draw the image into an offscreen gworld of that colorspace.

    err = GraphicsImportGetNaturalBounds( importer, &naturalBounds );

    err = QTNewGWorld( &gworld, pixelFormat, &naturalBounds, NULL, NULL, 0 );

    if ( noErr == err ) {

        pixmap = GetGWorldPixMap( gworld );

        LockPixels( pixmap );

        err = GraphicsImportSetGWorld( importer, gworld, nil );

        err = GraphicsImportDraw( importer );

        windowBounds = naturalBounds;

        OffsetRect( &windowBounds, 10, 45 );

        window = NewCWindow( NULL, &windowBounds, "\pDraw CMYK", true, documentProc, 

                (WindowPtr)-1, true, 0);

        // Copy the image from the offscreen to the window using an image decompression sequence.

        err = MakeImageDescriptionForPixMap( pixmap, &offscreenDesc );

        SetIdentityMatrix( &matrix );

        err = DecompressSequenceBegin( &imageSequence, offscreenDesc, GetWindowPort(window), NULL, NULL, 

                &matrix, ditherCopy, NULL, 0, codecNormalQuality, nil );

        err = DecompressSequenceFrameS( imageSequence, GetPixBaseAddr( pixmap ),

                (**offscreenDesc).dataSize, 0, NULL, NULL );

        CDSequenceEnd( imageSequence );

        DisposeHandle( (Handle)offscreenDesc );

    }

    DisposeHandle( (Handle)desc );

    DisposeHandle( h );

    if ( gworld ) DisposeGWorld( gworld );

    CloseComponent( importer );

}