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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. *
- * 3 Sep 90 - Version 1.1 by Gershon Elber (Support for Gif89, Unique names). *
- ******************************************************************************/
-
- #ifndef GIF_LIB_H
- #define GIF_LIB_H
-
- #define GIF_LIB_VERSION " Version 1.1, "
-
- #define GIF_ERROR 0
- #define GIF_OK 1
-
- #ifndef TRUE
- #define TRUE 1
- #define FALSE 0
- #endif
-
- #define GIF_FILE_BUFFER_SIZE 16384 /* Files uses bigger buffers than usual. */
-
- typedef int GifBooleanType;
- typedef unsigned char GifPixelType;
- typedef unsigned char * GifRowType;
- typedef unsigned char GifByteType;
-
- #define GIF_MESSAGE(Msg) fprintf(stderr, "\n%s: %s\n", PROGRAM_NAME, Msg)
- #define GIF_EXIT(Msg) { GIF_MESSAGE(Msg); exit(-3); }
-
- #ifdef SYSV
- #define VoidPtr char *
- #else
- #define VoidPtr void *
- #endif /* SYSV */
-
- typedef struct GifColorType {
- GifByteType 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. */
- VoidPtr Private; /* The regular user should not mess 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;
-
- /* DumpScreen2Gif routine constants identify type of window/screen to dump. */
- /* Note all values below 1000 are reserved for the IBMPC different display */
- /* devices (it has many!) and are compatible with the numbering TC2.0 */
- /* (Turbo C 2.0 compiler for IBM PC) gives to these devices. */
- typedef enum {
- GIF_DUMP_SGI_WINDOW = 1000,
- GIF_DUMP_X_WINDOW = 1001
- } GifScreenDumpType;
-
- /******************************************************************************
- * 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);
- void EGifSetGifVersion(char *Version);
- 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, GifPixelType *GifLine, int GifLineLen);
- int EGifPutPixel(GifFileType *GifFile, GifPixelType GifPixel);
- int EGifPutComment(GifFileType *GifFile, char *GifComment);
- int EGifPutExtension(GifFileType *GifFile, int GifExtCode, int GifExtLen,
- VoidPtr GifExtension);
- int EGifPutCode(GifFileType *GifFile, int GifCodeSize,
- GifByteType *GifCodeBlock);
- int EGifPutCodeNext(GifFileType *GifFile, GifByteType *GifCodeBlock);
- int EGifCloseFile(GifFileType *GifFile);
-
- #define E_GIF_ERR_OPEN_FAILED 1 /* And EGif possible errors. */
- #define E_GIF_ERR_WRITE_FAILED 2
- #define E_GIF_ERR_HAS_SCRN_DSCR 3
- #define E_GIF_ERR_HAS_IMAG_DSCR 4
- #define E_GIF_ERR_NO_COLOR_MAP 5
- #define E_GIF_ERR_DATA_TOO_BIG 6
- #define E_GIF_ERR_NOT_ENOUGH_MEM 7
- #define E_GIF_ERR_DISK_IS_FULL 8
- #define E_GIF_ERR_CLOSE_FAILED 9
- #define E_GIF_ERR_NOT_WRITEABLE 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, GifPixelType *GifLine, int GifLineLen);
- int DGifGetPixel(GifFileType *GifFile, GifPixelType GifPixel);
- int DGifGetComment(GifFileType *GifFile, char *GifComment);
- int DGifGetExtension(GifFileType *GifFile, int *GifExtCode,
- GifByteType **GifExtension);
- int DGifGetExtensionNext(GifFileType *GifFile, GifByteType **GifExtension);
- int DGifGetCode(GifFileType *GifFile, int *GifCodeSize,
- GifByteType **GifCodeBlock);
- int DGifGetCodeNext(GifFileType *GifFile, GifByteType **GifCodeBlock);
- int DGifGetLZCodes(GifFileType *GifFile, int *GifCode);
- int DGifCloseFile(GifFileType *GifFile);
-
- #define D_GIF_ERR_OPEN_FAILED 101 /* And DGif possible errors. */
- #define D_GIF_ERR_READ_FAILED 102
- #define D_GIF_ERR_NOT_GIF_FILE 103
- #define D_GIF_ERR_NO_SCRN_DSCR 104
- #define D_GIF_ERR_NO_IMAG_DSCR 105
- #define D_GIF_ERR_NO_COLOR_MAP 106
- #define D_GIF_ERR_WRONG_RECORD 107
- #define D_GIF_ERR_DATA_TOO_BIG 108
- #define D_GIF_ERR_NOT_ENOUGH_MEM 109
- #define D_GIF_ERR_CLOSE_FAILED 110
- #define D_GIF_ERR_NOT_READABLE 111
- #define D_GIF_ERR_IMAGE_DEFECT 112
- #define D_GIF_ERR_EOF_TOO_SOON 113
-
- /******************************************************************************
- * O.k. here are the routines from GIF_LIB file QUANTIZE.C. *
- ******************************************************************************/
- int QuantizeBuffer(int Width, int Height, int *ColorMapSize,
- GifByteType *RedInput, GifByteType *GreenInput, GifByteType *BlueInput,
- GifByteType *OutputBuffer, GifColorType *OutputColorMap);
-
- /******************************************************************************
- * 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 DumpScreen2Gif(char *FileName, int ReqGraphDriver, int ReqGraphMode1,
- int ReqGraphMode2,
- int ReqGraphMode3);
-
- #endif /* GIF_LIB_H */
-