| /* |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #ifndef _GIF_LIB_PRIVATE_H |
| #define _GIF_LIB_PRIVATE_H |
| |
| #include "gif_lib.h" |
| |
| #define PROGRAM_NAME "LIBUNGIF" |
| |
| #ifdef SYSV |
| #define VersionStr "Gif library module,\t\tEric S. Raymond\n\ |
| (C) Copyright 1997 Eric S. Raymond\n" |
| #else |
| #define VersionStr PROGRAM_NAME " IBMPC " GIF_LIB_VERSION \ |
| " Eric S. Raymond, " __DATE__ ", " \ |
| __TIME__ "\n" "(C) Copyright 1997 Eric S. Raymond\n" |
| #endif /* SYSV */ |
| |
| #define LZ_MAX_CODE 4095 /* Biggest code possible in 12 bits. */ |
| #define LZ_BITS 12 |
| |
| #define FLUSH_OUTPUT 4096 /* Impossible code, to signal flush. */ |
| #define FIRST_CODE 4097 /* Impossible code, to signal first. */ |
| #define NO_SUCH_CODE 4098 /* Impossible code, to signal empty. */ |
| |
| #define FILE_STATE_WRITE 0x01 |
| #define FILE_STATE_SCREEN 0x02 |
| #define FILE_STATE_IMAGE 0x04 |
| #define FILE_STATE_READ 0x08 |
| |
| #define IS_READABLE(Private) (Private->FileState & FILE_STATE_READ) |
| #define IS_WRITEABLE(Private) (Private->FileState & FILE_STATE_WRITE) |
| |
| typedef struct GifFilePrivateType { |
| int FileState, FileHandle, /* Where all this data goes to! */ |
| BitsPerPixel, /* Bits per pixel (Codes uses at least this + 1). */ |
| ClearCode, /* The CLEAR LZ code. */ |
| EOFCode, /* The EOF LZ code. */ |
| RunningCode, /* The next code algorithm can generate. */ |
| RunningBits, /* The number of bits required to represent RunningCode. */ |
| MaxCode1, /* 1 bigger than max. possible code, in RunningBits bits. */ |
| LastCode, /* The code before the current code. */ |
| CrntCode, /* Current algorithm code. */ |
| StackPtr, /* For character stack (see below). */ |
| CrntShiftState; /* Number of bits in CrntShiftDWord. */ |
| unsigned long CrntShiftDWord; /* For bytes decomposition into codes. */ |
| unsigned long PixelCount; /* Number of pixels in image. */ |
| FILE *File; /* File as stream. */ |
| InputFunc Read; /* function to read gif input (TVT) */ |
| OutputFunc Write; /* function to write gif output (MRB) */ |
| GifByteType Buf[256]; /* Compressed input is buffered here. */ |
| GifByteType Stack[LZ_MAX_CODE]; /* Decoded pixels are stacked here. */ |
| GifByteType Suffix[LZ_MAX_CODE + 1]; /* So we can trace the codes. */ |
| unsigned int Prefix[LZ_MAX_CODE + 1]; |
| } GifFilePrivateType; |
| |
| extern int _GifError; |
| |
| #endif /* _GIF_LIB_PRIVATE_H */ |
