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- /******************************************************************************
- * In order to make life a little bit easier when using the GIF file format, *
- * this library was written, and which does all the dirty work... *
- * *
- * Written by Gershon Elber, Jun. 1989 *
- *******************************************************************************
- * History: *
- * 14 Jun 89 - Version 1.0 by Gershon Elber. *
- ******************************************************************************/
-
- #ifndef GIF_LIB_H
- #define GIF_LIB_H
-
- #define ERROR 0
- #define OK 1
-
- #ifndef TRUE
- #define TRUE 1
- #define FALSE 0
- #endif
-
- #define FILE_BUFFER_SIZE 16384 /* Files uses bigger buffers than usual */
-
- typedef int BooleanType;
- typedef unsigned char PixelType;
- typedef unsigned char * RowType;
- typedef unsigned char ByteType;
-
- #define MESSAGE(s) fprintf(stderr, "\n%s: %s\n", __FILE__, s)
- #define EXIT(s) { MESSAGE(s); exit(-3); }
-
- typedef struct GifColorType {
- ByteType Red, Green, Blue;
- } GifColorType;
-
- /* Note entries prefixed with S are of Screen information, while entries */
- /* prefixed with I are of the current defined Image. */
- typedef struct GifFileType {
- int SWidth, SHeight, /* Screen dimensions */
- SColorResolution, SBitsPerPixel, /* How many colors can we generate? */
- SBackGroundColor, /* I hope you understand this one... */
- ILeft, ITop, IWidth, IHeight, /* Current image dimensions */
- IInterlace, /* Sequential/Interlaced lines */
- IBitsPerPixel; /* How many colors this image has? */
- GifColorType *SColorMap, *IColorMap; /* NULL if not exists */
- void *Private; /* The regular user should not mesh with this one! */
- } GifFileType;
-
- typedef enum {
- UNDEFINED_RECORD_TYPE,
- SCREEN_DESC_RECORD_TYPE,
- IMAGE_DESC_RECORD_TYPE, /* Begin with ',' */
- EXTENSION_RECORD_TYPE, /* Begin with '!' */
- TERMINATE_RECORD_TYPE /* Begin with ';' */
- } GifRecordType;
-
- /******************************************************************************
- * O.k. here are the routines one can access in order to encode GIF file: *
- * (GIF_LIB file EGIF_LIB.C). *
- ******************************************************************************/
-
- GifFileType *EGifOpenFileName(char *GifFileName, int GifTestExistance);
- GifFileType *EGifOpenFileHandle(int GifFileHandle);
- int EGifPutScreenDesc(GifFileType *GifFile,
- int GifWidth, int GifHeight, int GifColorRes, int GifBackGround,
- int GifBitsPerPixel, GifColorType *GifColorMap);
- int EGifPutImageDesc(GifFileType *GifFile,
- int GifLeft, int GifTop, int Width, int GifHeight, int GifInterlace,
- int GifBitsPerPixel, GifColorType *GifColorMap);
- int EGifPutLine(GifFileType *GifFile, PixelType *GifLine, int GifLineLen);
- int EGifPutPixel(GifFileType *GifFile, PixelType GifPixel);
- int EGifPutComment(GifFileType *GifFile, char *GifComment);
- int EGifPutExtension(GifFileType *GifFile, int GifExtCode, int GifExtLen,
- void *GifExtension);
- int EGifPutCode(GifFileType *GifFile, int GifCodeSize, ByteType *GifCodeBlock);
- int EGifPutCodeNext(GifFileType *GifFile, ByteType *GifCodeBlock);
- int EGifCloseFile(GifFileType *GifFile);
-
- #define E_GIF_ERR_OpenFailed 1 /* And EGif possible errors */
- #define E_GIF_ERR_WriteFailed 2
- #define E_GIF_ERR_HasScrnDscr 3
- #define E_GIF_ERR_HasImagDscr 4
- #define E_GIF_ERR_NoColorMap 5
- #define E_GIF_ERR_DataTooBig 6
- #define E_GIF_ERR_NotEnoughMem 7
- #define E_GIF_ERR_DiskIsFull 8
- #define E_GIF_ERR_CloseFailed 9
- #define E_GIF_ERR_NotWriteable 10
-
- /******************************************************************************
- * O.k. here are the routines one can access in order to decode GIF file: *
- * (GIF_LIB file DGIF_LIB.C). *
- ******************************************************************************/
-
- GifFileType *DGifOpenFileName(char *GifFileName);
- GifFileType *DGifOpenFileHandle(int GifFileHandle);
- int DGifGetScreenDesc(GifFileType *GifFile);
- int DGifGetRecordType(GifFileType *GifFile, GifRecordType *GifType);
- int DGifGetImageDesc(GifFileType *GifFile);
- int DGifGetLine(GifFileType *GifFile, PixelType *GifLine, int GifLineLen);
- int DGifGetPixel(GifFileType *GifFile, PixelType GifPixel);
- int DGifGetComment(GifFileType *GifFile, char *GifComment);
- int DGifGetExtension(GifFileType *GifFile, int *GifExtCode,
- ByteType **GifExtension);
- int DGifGetExtensionNext(GifFileType *GifFile, ByteType **GifExtension);
- int DGifGetCode(GifFileType *GifFile, int *GifCodeSize,
- ByteType **GifCodeBlock);
- int DGifGetCodeNext(GifFileType *GifFile, ByteType **GifCodeBlock);
- int DGifGetLZCodes(GifFileType *GifFile, int *GifCode);
- int DGifCloseFile(GifFileType *GifFile);
-
- #define D_GIF_ERR_OpenFailed 101 /* And DGif possible errors */
- #define D_GIF_ERR_ReadFailed 102
- #define D_GIF_ERR_NotGifFile 103
- #define D_GIF_ERR_NoScrnDscr 104
- #define D_GIF_ERR_NoImagDscr 105
- #define D_GIF_ERR_NoColorMap 106
- #define D_GIF_ERR_WrongRecord 107
- #define D_GIF_ERR_DataTooBig 108
- #define D_GIF_ERR_NotEnoughMem 109
- #define D_GIF_ERR_CloseFailed 110
- #define D_GIF_ERR_NotReadable 111
- #define D_GIF_ERR_ImageDefect 112
- #define D_GIF_ERR_EOFTooSoon 113
-
- /******************************************************************************
- * O.k. here are the routines from GIF_LIB file GIF_ERR.C. *
- ******************************************************************************/
- void PrintGifError(void);
- int GifLastError(void);
-
- /******************************************************************************
- * O.k. here are the routines from GIF_LIB file DEV2GIF.C. *
- ******************************************************************************/
- int DumpScreen(char *FileName, int ReqGraphDriver, int ReqGraphMode);
-
- #endif GIF_LIB_H