G3Encoder.h
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- /* $Id: G3Encoder.h,v 1.1.1.1 2005/11/11 21:32:02 faxguy Exp $ */
- /*
- * Copyright (c) 1994-1996 Sam Leffler
- * Copyright (c) 1994-1996 Silicon Graphics, Inc.
- * HylaFAX is a trademark of Silicon Graphics
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the names of
- * Sam Leffler and Silicon Graphics may not be used in any advertising or
- * publicity relating to the software without the specific, prior written
- * permission of Sam Leffler and Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
- * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
- #ifndef _G3Encoder_
- #define _G3Encoder_
- /*
- * Group 3 Facsimile Encoder Support.
- */
- #include "Types.h"
- class fxStackBuffer;
- struct tableentry;
- class G3Encoder {
- private:
- bool is2D; // data is to be 1d/2d-encoded
- bool isG4; // data is to be G4-encoded
- bool firstEOL; // first EOL is not byte-aligned
- const u_char* bitmap; // bit reversal table
- short data; // current input/output byte
- short bit; // current bit in input/output byte
- fxStackBuffer& buf;
- static const u_char zeroruns[256];
- static const u_char oneruns[256];
- static int findspan(const u_char**, int, int, const u_char*);
- static int find0span(const u_char*, int, int);
- static int find1span(const u_char*, int, int);
- static int finddiff(const u_char*, int, int, int);
- void putBits(u_int bits, u_int length);
- void putcode(const tableentry& te);
- void putspan(int span, const tableentry* tab);
- void flushBits();
- public:
- G3Encoder(fxStackBuffer&);
- virtual ~G3Encoder();
- void setupEncoder(u_int fillOrder, bool, bool);
- void encode(const void* raster, u_int w, u_int h, u_char* rp = NULL);
- void encoderCleanup();
- };
- #endif /* _G3Encoder_ */