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190 lines
6.3 KiB
C
190 lines
6.3 KiB
C
/*
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File: puPrivate.h
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Contains: This is the main header file for the picture utilities package.
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Written by: Dave Good. Some ideas stolen from Konstantin Othmer and Bruce Leak. Prototyped by Cris Rys.
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Copyright: © 1990 by Apple Computer, Inc., all rights reserved.
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Change History (most recent first):
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<9> 9/25/90 DDG Saved a few bytes by changing the IsColorPort and IsPixMap
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macros to cast everything to short before the ÒandÓ operation.
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<8> 9/21/90 DDG Made changes from code review. Pulled out all the public stuff
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into the public interface file (ÒPictUtil.hÓ).
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<7> 8/5/90 DDG Fixed the prototype of the RecordColors routine. Added two
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fields for checking to see if we are reading data past the end
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of a picture.
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<6> 8/3/90 DDG Renumbered the verbs and added a prototype for the
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CalcExactTable routine.
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<5> 8/2/90 DDG Added a field for custom color procs and added a prototype for
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the custom RecordColors routine.
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<4> 7/31/90 DDG Replaced the workingCTPtr field by a buffer field
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(colorTableBuffer) and a color table entries count
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(colorTableEntries).
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<3> 7/30/90 DDG Added fields to support colorizing and exact histograms.
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<2> 7/29/90 DDG Fixed header.
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<1> 7/29/90 DDG First checked in using new structure.
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To Do:
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*/
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/*----------------------------------------------------------------------------------------------------------*/
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/*
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| Includes
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*/
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#include <types.h>
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#include <memory.h>
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#include <quickdraw.h>
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#include <palettes.h>
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#include <pictutil.h>
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#include <errors.h>
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/*----------------------------------------------------------------------------------------------------------*/
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/*
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| Defines
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*/
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#define allVerbMask ( (short) 0x001F )
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#define IsColorPort(x) ( ((unsigned short)(x) & (unsigned short)0xC000) != 0 )
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#define IsPixMap(x) ( ((unsigned short)(x) & (unsigned short)0x8000) != 0 )
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#define CURRENT_VERSION 0
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#define HistogramTableSize (32768 * 2)
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#define maximumExactColors 256
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#define bufferFixedType 1
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#define bufferFixedLastingType 2
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#define bufferVariableType 3
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/*----------------------------------------------------------------------------------------------------------*/
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/*
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| Functions
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*/
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extern pascal OSErr __GetPictInfo( PicHandle, PictInfo *, short, short, short, short );
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extern pascal OSErr __GetPixMapInfo( PixMapHandle, PictInfo *, short, short, short, short );
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extern pascal OSErr __NewPictInfo( PictInfoID *, short, short, short, short );
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extern pascal OSErr __RecordPixMapInfo( PictInfoID, PixMapHandle );
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extern pascal OSErr __RecordPictInfo( PictInfoID, PicHandle );
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extern pascal OSErr __RetrievePictInfo( PictInfoID, PictInfo *, short );
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extern pascal OSErr __DisposPictInfo( PictInfoID );
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/*----------------------------------------------------------------------------------------------------------*/
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/*
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| Internal Structures
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*/
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/*
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| This is the definition for the external function that is called to read in data
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| for the picture. The APPLICATION provides this function.
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*/
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typedef pascal void( *GetPicDataProcPtr )( Ptr, short );
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typedef struct Buffer {
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unsigned char *ptr;
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unsigned long size;
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unsigned long ref;
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} Buffer;
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typedef struct InternalPictInfo {
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PictInfo ext;
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PictInfoID thePictInfoID; // for identifications/verification purposes
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short verb;
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short colorPickMethod;
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short colorsRequested;
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Buffer spoolBuffer;
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Buffer lineBuffer;
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Buffer bandBuffer;
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unsigned char *spoolPtr; // a pointer to the current offset in the spool buffer
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unsigned char *spoolMax; // the ending pointer for the spool buffer (start + size)
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PicHandle spoolPictHandle; // handle to the picture (for spooling purposes)
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unsigned long spoolPictOffset; // offset into the picture (for spooling purposes)
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unsigned long spoolPictLength; // length of the picture handle
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OSErr spoolPictError; // error that occurred in the spooling routines
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GetPicDataProcPtr spoolProc; // the APPLICATION procedure that reads the picture into the buffer
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short colorBankType; // if this is true then the color bank is a 555 histogram
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Buffer colorBankBuffer;
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short colorBankIndex; // this is only used for custom colors.
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Buffer colorTableBuffer; // this contains the pre-colorized, fleshed out color table for index stuff
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short colorTableEntries; // number of entries in the color table buffer
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long *indexCachePtr;
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RGBColor foreColor;
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RGBColor backColor;
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short colorizing;
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long pickProcData;
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} InternalPictInfo, *InternalPictInfoPtr, **InternalPictInfoHandle;
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/*----------------------------------------------------------------------------------------------------------*/
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/*
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| Internal Funtions
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*/
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unsigned char GetPictByte( InternalPictInfoPtr );
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unsigned short GetPictWord( InternalPictInfoPtr );
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unsigned long GetPictLong( InternalPictInfoPtr );
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void GetPictData( InternalPictInfoPtr, unsigned char *, unsigned long );
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void SkipPictData( InternalPictInfoPtr, unsigned long );
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void SkipPictByte( InternalPictInfoPtr );
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void SkipPictWord( InternalPictInfoPtr );
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void SkipPictLong( InternalPictInfoPtr );
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void AddPadBytes( unsigned char *, unsigned char *, unsigned long );
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void MergeRGBData( unsigned char *, unsigned char *, unsigned short, Boolean );
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void UnpackWords( unsigned char *, unsigned char **, unsigned short );
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void ClearMemoryBytes( char *, unsigned long );
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void NewEmptyBuffer( Buffer * );
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OSErr NewBuffer( Buffer *, unsigned long, short );
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OSErr NewBufferClear( Buffer *, unsigned long, short );
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OSErr SetBufferSize( Buffer *, unsigned long, short );
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OSErr SetBufferSizeClear( Buffer *, unsigned long, short );
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OSErr KillBuffer( Buffer * );
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OSErr RecordPixMapGuts( InternalPictInfoPtr, PixMapHandle );
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void RecordPixels( InternalPictInfoPtr, short, short, short, long, short );
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void RecordRGBColor( InternalPictInfoPtr, RGBColor * );
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void CalcExactTable( short, short, ColorSpec *, ColorSpec * );
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InternalPictInfoPtr DerefPictInfoID( PictInfoID, char * );
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pascal OSErr InitPickMethod( short, long *, short *, short );
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pascal OSErr RecordColors( long, RGBColor *, long, long *, short );
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pascal OSErr CalcColorTable( long, short, char *, ColorSpec *, short );
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pascal OSErr KillPickMethod( long, short );
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/*----------------------------------------------------------------------------------------------------------*/
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