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Diffstat (limited to 'tools/gifconv/gif2mem.c')
-rw-r--r-- | tools/gifconv/gif2mem.c | 344 |
1 files changed, 0 insertions, 344 deletions
diff --git a/tools/gifconv/gif2mem.c b/tools/gifconv/gif2mem.c deleted file mode 100644 index 0695995..0000000 --- a/tools/gifconv/gif2mem.c +++ /dev/null @@ -1,344 +0,0 @@ -/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * - * Copyright by the Board of Trustees of the University of Illinois. * - * All rights reserved. * - * * - * This file is part of HDF5. The full HDF5 copyright notice, including * - * terms governing use, modification, and redistribution, is contained in * - * the files COPYING and Copyright.html. COPYING can be found at the root * - * of the source code distribution tree; Copyright.html can be found at the * - * root level of an installed copy of the electronic HDF5 document set and * - * is linked from the top-level documents page. It can also be found at * - * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * - * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * - * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ - -/* - * This file contains snippets of code from James Murray's original file to - * display the GIF header information, but most of it has been modified to - * suit gif2hdf - */ - -/****************************************************************************\ -** Title: GIFHEAD.C ** -** Purpose: Display the data in a GIF image file. ** -** Version: 1.0 ** -** Date: March 1992 ** -** Author: James D. Murray, Anaheim, CA, USA ** -** C Compilers: Borland C++ v2.0, Microsoft C v6.00a ** -** ** -** GIFHEAD displays all real information contained within a GIF image ** -** file, including all color tables and extension block information. ** -** GIFHEAD reads both GIF 87a abd 89a-format files. ** -** ** -** Copyright (C) 1991-92 by Graphics Software Labs. All rights reserved. ** -\****************************************************************************/ -#include <stdio.h> - -#include "gif.h" - -#define VERSION "1.00" - -GIFTOMEM -Gif2Mem(BYTE *MemGif) -{ - /* - * The gif structure outline for passing data to memory is given in gif.h. - * These pointers are redunant, should take them out in ver. 2 - */ - GIFHEAD *gifHead; /* GIF Header structure */ - GIFIMAGEDESC **gifImageDesc; /* Logical Image Descriptor struct */ - GIFPLAINTEXT **gifPlainText; /* Plain Text Extension structure */ - GIFAPPLICATION **gifApplication; /* Application Extension structure */ - GIFCOMMENT **gifComment; /* Comment Extension structure */ - GIFGRAPHICCONTROL **gifGraphicControl; /* Graphic Control Extension strct */ - - GIFTOMEM GifMemoryStruct; - - register WORD i; /* Loop counter */ - BYTE Identifier; /* Extension block identifier holder */ - BYTE Label; /* Extension block label holder */ - BYTE ImageCount; /* Count of the number of images in the file */ - BYTE ImageArray; /* Keep the size of the array to store Images */ - BYTE CommentCount; - BYTE CommentArray; - BYTE ApplicationCount; - BYTE ApplicationArray; - BYTE PlainTextCount; - BYTE PlainTextArray; - BYTE GCEflag; - BYTE aTemp; - BYTE j; - BYTE w; /* Two more variables needed only while testing */ - BYTE *b; /* Endian Ordering */ - - /* Allocate memory for the GIF structures */ - /* Plug the structs into GifMemoryStruct at the end */ - /****************************************************/ - if (!(gifHead = (GIFHEAD *)malloc(sizeof(GIFHEAD)))) { - printf("Could not allocate memory for gifHead\n"); - exit(-1); - } - - /* - * The next three have to grow dynamically so we leave them for now and - * let realloc handle it later on. - */ - gifImageDesc = NULL; - gifPlainText = NULL; - gifGraphicControl = NULL; - gifComment = NULL; - gifApplication = NULL; - - /******************************/ - /* Memory allocation complete */ - /******************************/ - - /* Carry out Endian Testing and set Endian Order */ - w = 0x0001; - b = (BYTE *) &w; - EndianOrder = (b[0] ? 1 : 0); - - /* Read the GIF image file header information */ - ReadGifHeader(gifHead, &MemGif); - - /* Check for FILE stream error */ -#if 0 - if (ferror(fpGif)) - { - fputs("GIFHEAD: Error reading header information!\n", stderr); - exit(-3); - } -#endif /* 0 */ - - /* - * Identify, read, and display block information. - */ - ImageCount = ImageArray = 0; - CommentCount = CommentArray = 0; - ApplicationCount = ApplicationArray = 0; - PlainTextCount = PlainTextArray = 0; - GCEflag = 0; - - for (;;) { - Identifier = *MemGif++; - - switch (Identifier) { - case 0x3B: /* Trailer */ - /* - * The counts are stored to make it easier while putting stuff - * into the HDF file and then deallocating space. - */ - gifHead->ImageCount = ImageCount; - gifHead->CommentCount = CommentCount; - gifHead->ApplicationCount = ApplicationCount; - gifHead->PlainTextCount = PlainTextCount; - - /* putting stuff into the gif2mem structure */ - GifMemoryStruct.GifHeader = gifHead; - GifMemoryStruct.GifImageDesc = gifImageDesc; - GifMemoryStruct.GifPlainTextExtension = gifPlainText; - GifMemoryStruct.GifApplicationExtension = gifApplication; - GifMemoryStruct.GifCommentExtension = gifComment; - GifMemoryStruct.GifGraphicControlExtension = gifGraphicControl; - - /* return the struct */ - return GifMemoryStruct; - - case 0x2C: /* Image Descriptor */ - /* - * If there was no image descriptor before this increase image - * count. If an imagedescriptor was present, reset GCEflag - */ - if (GCEflag == 0) - ImageCount++; - else - GCEflag = 0; - - if (ImageCount > ImageArray) { - aTemp = ImageArray; - ImageArray = (ImageArray << 1) + 1; - if (!(gifImageDesc = (GIFIMAGEDESC **)realloc(gifImageDesc, - sizeof(GIFIMAGEDESC *) * ImageArray))) { - printf("Out of memory!"); - exit(-1); - } - - if (!(gifGraphicControl = (GIFGRAPHICCONTROL **)realloc( - gifGraphicControl, - sizeof(GIFGRAPHICCONTROL *) * ImageArray))) { - printf("Out of memory!"); - exit(-1); - } - - for (j = aTemp ; j < ImageArray ; j++) { - gifGraphicControl[j] = NULL; - gifImageDesc[j] = NULL; - } - } - - if(!(gifImageDesc[ImageCount-1] = (GIFIMAGEDESC*)malloc(sizeof(GIFIMAGEDESC)))) { - printf("Out of memory!"); - exit(-1); - } - - - if (ReadGifImageDesc(gifImageDesc[ImageCount-1], &MemGif) == -1) - fputs("Error reading Image Descriptor information\n", stderr); - - /* Decompress the Image */ - gifImageDesc[ImageCount-1]->Image = Decompress(gifImageDesc[ImageCount-1], - gifHead); - free(gifImageDesc[ImageCount-1]->GIFImage); - - /* - * Convert the local palette into an HDF compatible palette In - * case the local color table is present, it is written out as - * the HDFPalette If it is absent the global table is written - * as the HDFPalette. - */ - if (!((gifImageDesc[ImageCount-1]->PackedField) & 0x80)) { - /* Check to see if the global color table exists.... */ - if (gifHead->PackedField & 0x80) { - for (i=0 ; i<gifHead->TableSize ; i++) { - gifImageDesc[ImageCount-1]->HDFPalette[i][0] = - gifHead->HDFPalette[i][0]; - gifImageDesc[ImageCount-1]->HDFPalette[i][1] = - gifHead->HDFPalette[i][1]; - gifImageDesc[ImageCount-1]->HDFPalette[i][2] = - gifHead->HDFPalette[i][2]; - } - } - - gifImageDesc[ImageCount-1]->TableSize = gifHead->TableSize; - } - - break; - - case 0x21: /* Extension Block */ - Label = *MemGif++; - - switch (Label) { - case 0x01: /* Plain Text Extension */ - puts("Plain Text Extension\n"); - PlainTextCount++; - - if (PlainTextCount > PlainTextArray) - PlainTextArray = (PlainTextArray << 1) + 1; - - if (!(gifPlainText = (GIFPLAINTEXT **)realloc(gifPlainText , sizeof(GIFPLAINTEXT *) * PlainTextArray))) { - printf("Out of memory!"); - exit(-1); - } - - if(!(gifPlainText[PlainTextCount - 1] = (GIFPLAINTEXT*)malloc(sizeof(GIFPLAINTEXT)))) { - printf("Out of memory!"); - exit(-1); - } - - if (ReadGifPlainText(gifPlainText[PlainTextCount - 1], &MemGif)) - fprintf(stderr, - "Error reading Plain Text Extension information.\n"); - - break; - - case 0xFE: /* Comment Extension */ - CommentCount++; - - if (CommentCount > CommentArray) - CommentArray = (CommentArray << 1) + 1; - - if (!(gifComment = (GIFCOMMENT **)realloc(gifComment , sizeof(GIFCOMMENT *) * CommentArray))) { - printf("Out of memory!"); - exit(-1); - } - - if(!(gifComment[CommentCount - 1] = (GIFCOMMENT *)malloc(sizeof(GIFCOMMENT)))) { - printf("Out of memory!"); - exit(-1); - } - - - if (ReadGifComment(gifComment[CommentCount - 1], &MemGif)) - fprintf(stderr, - "Error reading Comment Extension information\n"); - - break; - - case 0xF9: /* Graphic Control Extension */ - if (GCEflag == 0 ) - ImageCount++; - - GCEflag = 1; - - if (ImageCount > ImageArray) { - aTemp = ImageArray; - ImageArray = (ImageArray << 1) + 1; - - if (!(gifGraphicControl = (GIFGRAPHICCONTROL **)realloc(gifGraphicControl , sizeof(GIFGRAPHICCONTROL *) * ImageArray))) { - printf("Out of memory!"); - exit(-1); - } - - if (!(gifImageDesc = (GIFIMAGEDESC **)realloc(gifImageDesc , sizeof(GIFIMAGEDESC *) * ImageArray))) { - printf("Out of memory!"); - exit(-1); - } - - for (j = aTemp ; j < ImageArray ; j++) { - gifGraphicControl[j] = NULL; - gifImageDesc[j] = NULL; - } - } - - if(!(gifGraphicControl[ImageCount-1] = (GIFGRAPHICCONTROL*)malloc(sizeof(GIFGRAPHICCONTROL)))) { - printf("Out of memory!"); - exit(-1); - } - - - if (ReadGifGraphicControl(gifGraphicControl[ImageCount-1], &MemGif)) - fprintf(stderr, - "Error reading Graphic Control Extension information\n"); - - if (!*MemGif++ == 0) - fprintf(stderr, - "Error reading Graphic Control Extension\n"); - - break; - - case 0xFF: /* Application Extension */ - ApplicationCount++; - - if (ApplicationCount > ApplicationArray) - ApplicationArray = (ApplicationArray << 1) + 1; - - if (!(gifApplication = (GIFAPPLICATION **)realloc(gifApplication , sizeof(GIFAPPLICATION *) * ApplicationArray))) { - printf("Out of memory!"); - exit(-1); - } - - if(!(gifApplication[ApplicationCount - 1] = (GIFAPPLICATION *)malloc(sizeof(GIFAPPLICATION)))) { - printf("Out of memory!"); - exit(-1); - } - - - if (ReadGifApplication(gifApplication[ApplicationCount - 1], &MemGif)) - fprintf(stderr, - "Error reading Application Extension information\n"); - - break; - - default: - printf("Unknown Extension Label: 0x%02x\n", Label); - break; - } - - break; - - default: - fprintf(stderr, - "Unknown Block Separator Character: 0x%02x\n", Identifier); - } - } -} |