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/* encoder.hpp -- specific encoding filters
* by pts@fazekas.hu at Tue Feb 26 13:30:02 CET 2002
*/
#ifdef __GNUC__
#ifndef __clang__
#pragma interface
#endif
#endif
#ifndef ENCODER_HPP
#define ENCODER_HPP 1
#include "config2.h"
#include "gensio.hpp"
#include <stdio.h>
class PSEncoder: public Encoder {
public:
/** @return "Flate", "LZW", "DCT", "RunLength", "CCITTFax", "ASCIIHex", "ASCII85" */
// inline char const* getLongname() const { return longname; }
/** @return "Fla", "LZW", "DCT", "RL", "CCF", "AHx", "A85" */
// inline char const* getShortname() const { return shortname; }
// inline SimBuffer::Flat const& getFPSname() const { return filter_psname; }
// virtual void vi_write(char const*buf, slen_t len) =0;
inline virtual ~PSEncoder() {}
/* The class methods below may return different implementations according to
* the command line and compile-time options.
*/
static PSEncoder* newASCIIHexEncode(GenBuffer::Writable &out_,unsigned maxcpl_);
static PSEncoder* newASCII85Encode(GenBuffer::Writable &out_,unsigned maxcpl_);
/** Fax (PSL2 CCITTFaxEncode filter, Uncompressed=true! (parts of the data
* can be inserted uncompressed, when the decoder decides that this is
* advantageous), K=-1,0,positive,
* EndOfLine=false, EncodedByteAlign=false, Columns=..., Rows=0,
* EndOfBlock=true, BlackIs1=false, DamagedRowsBeforeError=0
* K must be -1, 0 or positive, see PLRM 3.13.3
* K==-1: Group 4 pure 2D encoding. TIFF COMPRESSION_CCITTFAX4,
* GROUP4OPT_UNCOMPRESSED.
* K==0: Group 3 pure 1D encoding. TIFF COMPRESSION_CCITTFAX3,
* GROUP3OPT_UNCOMPRESSED.
* K>=1: Group 3 2D (mixed 1D and 2D), a 1D-line can be followed by at most
* K-1 2D-line. TIFF COMPRESSION_CCITTFAX3, GROUP3OPT_UNCOMPRESSED,
* GROUP3OPT_2DENCODING (K is explicitly raised to image height).
* @param EndOfLine should be false for PS/PDF, but must be true for TIFF.
*/
static PSEncoder* newCCITTFaxEncode(GenBuffer::Writable &out_,slendiff_t K, slen_t Columns, bool EndOfLine=false, bool BlackIs1=false);
/** PSL2 LZWEncode filter EarlyChange=true, UnitLength=8 LowBitFirst=false */
static PSEncoder* newLZWEncode(GenBuffer::Writable &out_);
/** PSL3 FlateEncode (ZIP) filter Effort=...: 1..9: 9==highest compression. -1==5 */
static PSEncoder* newFlateEncode(GenBuffer::Writable &out_, signed Effort=-1);
/** PSL2 RunLengthEncode filter, similar to TIFF PackBits, recordsize=... */
static PSEncoder* newRunLengthEncode(GenBuffer::Writable &out_, slen_t RecordSize=0);
/** PSL2 DCTEncode. Calls the cjpeg utility (in the debian package
* libjpeg-progs) to do the task. The input must be RGB or Gray with
* BitsPerComponent==8.
*/
static PSEncoder* newDCTIJGEncode(GenBuffer::Writable &out_,
slen_t Columns,
slen_t Rows,
unsigned char Colors, /*1..4*/
unsigned char quality /*libJPEG quality: 0..100 */
);
/** @param other_parameters "" or something
* like: "/HSamples [1 2 1]/ColorTransform 2"
*/
static PSEncoder* newDCTEncode(GenBuffer::Writable &out_,
slen_t Columns,
slen_t Rows,
unsigned char Colors, /*1..4*/
unsigned char ColorTransform, /*0,1,2 3=default*/
SimBuffer::Flat const& other_parameters
);
/** PSL2 DCTEncode. Not supported yet. Imp: build support */
static PSEncoder* newDCTEncode(GenBuffer::Writable &out_,
slen_t Columns,
slen_t Rows,
unsigned char Colors, /*1..4*/
unsigned char quality=75, /*libJPEG quality: 0..100 */
unsigned char const*HSamples=(unsigned char*)NULLP, /*all 1..4, NULLP OK*/
unsigned char const*VSamples=(unsigned char*)NULLP, /*all 1..4, NULLP OK*/
/* vvv pacify VC6.0; no unsigned char (*QuantTables)[64]=(unsigned char(*)[64])NULLP, */
unsigned char (*QuantTables)[64]=0, /*NULLP OK*/
double QFactor=1.0, /*0..1000000*/
unsigned numHuffTables=0,
unsigned char **HuffTables=(unsigned char**)NULLP, /*NULLP OK*/
unsigned char ColorTransform=2 /*0,1,2 3=default*/
);
// static Encoder* newTIFFPredictor2(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
// static Encoder* newPNGPredictor11(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
/** @param type: 1: no predictor, 2: TIFFPredictor2, 10: PNGPredictorNone (None)
* 11: PNGPredictorSub (Sub), 12: PNGPredictorUp (Up),
* 13: PNGPredictorAverage (Average), 14: PNGPredictorPaeth (Paeth),
* 15: PNGPredictorAuto (optimum).
*/
static Encoder* newPredictor(GenBuffer::Writable &out_, unsigned char type, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
protected:
// char const *longname, *shortname;
// SimBuffer::B filter_psname;
};
#endif /* encoder.hpp */
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