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184 lines
6.1 KiB
184 lines
6.1 KiB
2 years ago
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Title: GIF.H
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* Purpose: GIF Header file
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*/
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#ifndef GIF_H_
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#define GIF_H_ 1
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "hdf5.h"
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#define MAX_PAL 768
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/* typedef H5T_NATIVE_UINT8 GIFBYTE; */
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typedef unsigned char GIFBYTE;
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/* typedef H5T_NATIVE_UINT16 GIFWORD; */
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typedef unsigned long GIFWORD;
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typedef char GIFCHAR;
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#ifndef boolean
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typedef unsigned char boolean;
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#endif
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#ifndef false
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#define false 0
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#endif
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#ifndef true
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#define true 1
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#endif
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/* Set the EndianOrder.
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** The GIF Reader file should do this.
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** Set EndianOrder = 0 if machine is little endian
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** EndianOrder = 1 if machine is big endian.
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*/
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extern int EndianOrder;
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/*
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** The GIF header format.
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**
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** This structure actually contains the header, logical screen
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** descriptor, and the global color table for the GIF image.
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*/
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typedef struct _GifHeader { /* Offset Description */
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GIFBYTE PackedField; /* 0Ah Color Information */
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GIFWORD TableSize;
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GIFBYTE ImageCount; /* Keep a count of the number of images */
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GIFBYTE CommentCount;
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GIFBYTE ApplicationCount;
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GIFBYTE PlainTextCount;
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GIFBYTE HDFPalette[256][3];
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GIFBYTE HeaderDump[6]; /* GIFBYTE array to dump header contents */
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GIFBYTE LSDDump[7]; /* Logical Screen Descriptor dump */
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} GIFHEAD;
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/*
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** The GIF Image Descriptor.
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*/
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typedef struct _GifImageDescriptor {
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GIFWORD ImageWidth; /* Width of the image in pixels */
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GIFWORD ImageHeight; /* Height of the image in pixels */
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GIFBYTE PackedField; /* Image and Color Table Data Information */
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GIFWORD TableSize;
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GIFWORD CodeSize; /* Minimum LZW CodeSize for image data */
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GIFBYTE HDFPalette[256][3];
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GIFBYTE GIDDump[9]; /* GifImageDescriptor dump */
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GIFBYTE *Image; /* Decompressed Raster Image */
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GIFBYTE *GIFImage;
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} GIFIMAGEDESC;
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/*
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** GIF 89a Graphic Control Extension Block
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*/
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typedef struct _GifGraphicControlExtension {
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GIFBYTE GCEDump[5]; /* Graphic Control Extension Dump */
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} GIFGRAPHICCONTROL;
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/*
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** GIF 89a Plain Text Extension Block
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*/
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typedef struct _GifPlainTextExtension {
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GIFBYTE PTEDump[15]; /* Plain Text Extension Dump */
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GIFBYTE *PlainTextData; /* Plain Text data sub-blocks */
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GIFWORD DataSize;
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} GIFPLAINTEXT;
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/*
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** GIF 89a Application Extension Block
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*/
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typedef struct _GifApplicationExtension {
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GIFBYTE AEDump[14]; /* Application Extension Dump */
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GIFBYTE *ApplicationData; /* Application data sub-blocks */
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GIFWORD DataSize;
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} GIFAPPLICATION;
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/*
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** GIF 89a Comment Extension Block
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*/
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typedef struct _GifCommentExtension {
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GIFBYTE CEDump[2]; /* Comment Extension Dump */
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GIFBYTE *CommentData; /* Comment data sub-blocks */
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GIFWORD DataSize;
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GIFBYTE Terminator; /* Block Terminator (always 0) */
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} GIFCOMMENT;
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/*
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** GIF to HDF Memory Struct
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** Purpose : The gif to hdf structure is used to pass all the
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** gif data to the memory, which gets caught by the hdf driver
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** Its the drivers job to put the data in the appropriate places
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** in the HDF file.
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** I have assumed that the ImageDescriptors and GraphicControls follow
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** one another, ie. I have not associated them with each other. The driver
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** must assume a 1-1 correspondence. The same discussion with plain text
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** extension.
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*/
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typedef struct _GifToMem {
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GIFHEAD *GifHeader;
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GIFIMAGEDESC **GifImageDesc;
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GIFGRAPHICCONTROL **GifGraphicControlExtension;
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GIFPLAINTEXT **GifPlainTextExtension;
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GIFAPPLICATION **GifApplicationExtension;
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GIFCOMMENT **GifCommentExtension;
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} GIFTOMEM;
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/*
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** Function Prototypes
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*/
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/* GIF2MEM.C */
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int Gif2Mem(GIFBYTE *, GIFTOMEM *);
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/* GIFREAD.C */
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int ReadGifHeader(GIFHEAD *, GIFBYTE **);
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int ReadGifImageDesc(GIFIMAGEDESC *, GIFBYTE **);
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int ReadGifGraphicControl(GIFGRAPHICCONTROL *, GIFBYTE **);
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int ReadGifPlainText(GIFPLAINTEXT *, GIFBYTE **);
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int ReadGifApplication(GIFAPPLICATION *, GIFBYTE **);
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int ReadGifComment(GIFCOMMENT *, GIFBYTE **);
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/* HDFGIFWR.C */
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int hdfWriteGIF(FILE *fp, GIFBYTE *pic, int ptype, int w, int h, const GIFBYTE *rmap, const GIFBYTE *gmap,
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const GIFBYTE *bmap, const GIFBYTE *pc2ncmap, int numcols, int colorstyle, int BitsPerPixel);
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/* WRITEHDF.C */
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int WriteHDF(GIFTOMEM, GIFCHAR *);
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/* Function: ReadHDF
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** Return: 0 on completion without error, -1 on error
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** Input: GIFCHAR *h5_file - HDF file name
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** GIFCHAR *dset_name - Name of the HDF Image dataset
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** GIFCHAR *pal_name - Name of the HDF palette
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** Output: GIFBYTE* data - the HDF Image to be converted
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** GIFBYTE palette[256][3] - the corresponding palette
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** hsize_t* image_size - the size of each dimension of the image
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*/
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int ReadHDF(GIFBYTE **data, GIFBYTE palette[256][3], hsize_t *image_size, GIFCHAR *h5_file,
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GIFCHAR *dset_name, GIFCHAR *pal_name);
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GIFBYTE *Decompress(GIFIMAGEDESC *, GIFHEAD *);
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GIFBYTE GetByte(const GIFBYTE *);
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GIFWORD GetWord(GIFBYTE *);
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void cleanup(GIFBYTE *);
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#endif /* GIF_H_ */
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