| //======================================================================== |
| // |
| // FlateStream.h |
| // |
| // Copyright (C) 2005, Jeff Muizelaar <jeff@infidigm.net> |
| // Copyright (C) 2010, 2011, Albert Astals Cid <aacid@kde.org> |
| // |
| // This file is under the GPLv2 or later license |
| // |
| //======================================================================== |
| |
| #ifndef FLATESTREAM_H |
| #define FLATESTREAM_H |
| |
| #ifdef USE_GCC_PRAGMAS |
| #pragma interface |
| #endif |
| |
| |
| #ifdef USE_GCC_PRAGMAS |
| #pragma implementation |
| #endif |
| |
| #include "poppler-config.h" |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stddef.h> |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| #include <string.h> |
| #include <ctype.h> |
| #include "goo/gmem.h" |
| #include "goo/gfile.h" |
| #include "Error.h" |
| #include "Object.h" |
| #include "Decrypt.h" |
| #include "Stream.h" |
| |
| extern "C" { |
| #include <zlib.h> |
| } |
| |
| class FlateStream: public FilterStream { |
| public: |
| |
| FlateStream(Stream *strA, int predictor, int columns, int colors, int bits); |
| virtual ~FlateStream(); |
| virtual StreamKind getKind() { return strFlate; } |
| virtual void reset(); |
| virtual int getChar(); |
| virtual int lookChar(); |
| virtual int getRawChar(); |
| virtual void getRawChars(int nChars, int *buffer); |
| virtual GooString *getPSFilter(int psLevel, const char *indent); |
| virtual GBool isBinary(GBool last = gTrue); |
| |
| private: |
| inline int doGetRawChar() { |
| if (fill_buffer()) |
| return EOF; |
| |
| return out_buf[out_pos++]; |
| } |
| |
| int fill_buffer(void); |
| z_stream d_stream; |
| StreamPredictor *pred; |
| int status; |
| /* in_buf currently needs to be 1 or we over read from EmbedStreams */ |
| unsigned char in_buf[1]; |
| unsigned char out_buf[4096]; |
| int out_pos; |
| int out_buf_len; |
| }; |
| |
| #endif |