summaryrefslogtreecommitdiff
path: root/Build/source/utils/sam2p/encoder.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/utils/sam2p/encoder.cpp')
-rw-r--r--Build/source/utils/sam2p/encoder.cpp1649
1 files changed, 0 insertions, 1649 deletions
diff --git a/Build/source/utils/sam2p/encoder.cpp b/Build/source/utils/sam2p/encoder.cpp
deleted file mode 100644
index 8369fdc4c8e..00000000000
--- a/Build/source/utils/sam2p/encoder.cpp
+++ /dev/null
@@ -1,1649 +0,0 @@
-/* encoder.cpp -- various PostScript and PDF encoding filter implementations
- * by pts@fazekas.hu at Sun Mar 3 14:16:00 CET 2002
- * --- Mon Mar 4 00:00:20 CET 2002
- */
-
-/* Imp: make built-in FlateEncode DYNALLOC */
-/* Imp: add lzw_codec */
-/* Imp: add gzip */
-/* Imp: add zlib */
-
-#ifdef __GNUC__
-#pragma implementation
-#endif
-
-
-#include "encoder.hpp"
-#include "error.hpp"
-#include "gensio.hpp"
-#include <stdlib.h> /* getenv() */
-#include <string.h>
-
-/* --- */
-
-/** Does output EOD (end-of-data) marker `>' */
-class ASCIIHexEncode: public PSEncoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- ASCIIHexEncode(GenBuffer::Writable &out_, unsigned maxcpl_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- unsigned maxcpl;
- /** Number of hex digits already printed. */
- unsigned curcpl;
- GenBuffer::Writable &out;
-};
-
-/** Does output EOD (end-of-data) marker `~>' */
-class ASCII85Encode: public PSEncoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- ASCII85Encode(GenBuffer::Writable &out_, unsigned maxcpl_);
- virtual void vi_write(char const*buf, slen_t len);
-
- protected:
- void wout(unsigned PTS_INT32_T buf_);
- unsigned maxcpl;
- /** Number of digits available in this line */
- GenBuffer::Writable &out;
- unsigned ascii85breaklen;
- unsigned ascii85left;
- unsigned PTS_INT32_T ascii85buf;
- char *obuf, *obufend, *op;
-};
-
-/** Doesn't output EOD (end-of-data) marker `>' */
-class RunLengthEncode: public PSEncoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- RunLengthEncode(GenBuffer::Writable &out_, slen_t RecordSize_);
- virtual void vi_write(char const*buf, slen_t len);
-
- protected:
- slen_t recordsize;
- GenBuffer::Writable &out;
- // char *obuf, *obufend, *op;
- slen_t record_left;
- unsigned saved_c, saved_rep;
- /** size == header+buffer+EOD */
- char saved[130];
-};
-
-static int gen_write(char *block, unsigned len, void *zfile);
-
-#if USE_BUILTIN_ZIP
-#include "pts_defl.h" /* Imp: because pts_defl_interface :-( */
-#if OBJDEP
-# warning REQUIRES: pts_defl
-#endif
-class FlateEncode: public PSEncoder {
-#if PTS_DEFL_RIPPED_ZLIB /* Dat: defined in pts_defl.h */
- public:
- /** @param level: 1..9: 9==highest compression */
- FlateEncode(GenBuffer::Writable &out_, unsigned level_);
- virtual ~FlateEncode() { zlib_deflateEnd(&zs); } /* Dat: ==Z_OK check (for unflushed buffers) omitted */
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- /** Formerly only one instance of FlateEncode was allowed.
- * It exists <=> loced==true
- */
- // static bool locked;
- /** Writable that this filter writes to */
- GenBuffer::Writable &out;
- char workspace[ZLIB_DEFLATE_WORKSPACESIZE_MIN]; /* big, about 300k */
- char obuf[4096];
- /*struct*/ z_stream zs;
-#else /* old, ripped from Info-ZIP 2.2 */
- public:
- /** @param level: 1..9: 9==highest compression */
- FlateEncode(GenBuffer::Writable &out_, unsigned level_);
- virtual ~FlateEncode() { if (fs!=NULLP) fs->delete2(fs); }
- virtual void vi_write(char const*buf, slen_t len);
- static void *gen_malloc(unsigned n);
- static void gen_free(void *p);
- protected:
- /** Formerly only one instance of FlateEncode was allowed.
- * It exists <=> loced==true
- */
- // static bool locked;
- /** Writable that this filter writes to */
- GenBuffer::Writable &out;
- #if SIZEOF_INT>2
- typedef unsigned s_t;
- #else
- typedef unsigned short s_t;
- #endif
- /** Adler32 checksum */
- s_t s1, s2;
- bool had_header;
- struct pts_defl_interface* fs;
-#endif /* else PTS_DEFL_RIPPED_ZLIB */
-};
-#endif
-
-/** Just store the data in Flate (ZLIB) format, no real compression. Adds
- * about 3 bytes of overhead per 65535 bytes (compression ratio:
- * 100.004578%)
- */
-class FlateStoreEncode: public PSEncoder {
- public:
- /** @param level: 1..9: 9==highest compression */
- FlateStoreEncode(GenBuffer::Writable &out_);
- inline virtual ~FlateStoreEncode() {}
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- GenBuffer::Writable &out;
- #if SIZEOF_INT>2
- typedef unsigned s_t;
- #else
- typedef unsigned short s_t;
- #endif
- /** Adler32 checksum */
- s_t s1, s2;
- bool had_header;
- /** Number of bytes already in buf */
- unsigned abuflen;
- /** Max: 65535 */
- #if HAVE_STATIC_CONST
- static const unsigned ABUFSIZE=65535;
- #else
- #define ABUFSIZE 65535
- #endif
- /** Should really not allocate a FlateStoreEncode on the stack. */
- char abuf[ABUFSIZE+5];
-};
-
-#if USE_BUILTIN_FAXE
-
-#include "pts_fax.h"
-#if OBJDEP
-# warning REQUIRES: pts_faxe
-#endif
-class CCITTFaxEncode: public PSEncoder {
- public:
- CCITTFaxEncode(GenBuffer::Writable &out_, slendiff_t K, slen_t Columns, bool EndOfLine, bool BlackIs1);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- GenBuffer::Writable &out;
- stream_CFE_state sCFEs;
- unsigned char rbuf[4096];
- unsigned char wbuf[4096];
- stream_cursor_read r;
- stream_cursor_write w;
- unsigned char *hard, *rlimit;
-
- static void*gen_xalloc(unsigned n);
- static void gen_free(void *ptr);
- static void gen_memset(void *s, int c, unsigned n);
- static void gen_memcpy(void *dest, const void *src, unsigned n);
-};
-#endif
-
-#if USE_BUILTIN_LZW
-#include "pts_lzw.h" /* Imp: because pts_lzw_state :-( */
-#if OBJDEP
-# warning REQUIRES: pts_lzw
-#endif
-class LZWEncode: public PSEncoder {
- public:
- LZWEncode(GenBuffer::Writable &out_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- GenBuffer::Writable &out;
- struct pts_lzw_state fs;
-};
-#endif
-
-/**
- * Reporting of GS errors is somewhat dump: the actual message isn't reported,
- * only the fact that something went wrong.
- * Imp: force a no-error trailer output by gs, and check that
- */
-class GSEncode: public PSEncoder {
- public:
- /** @param filter_psname is a full-featured PostScript *Encode filter
- * specification string, for example: "<</Effort 5>>/FlateEncode" or
- * "0/RunLengthEncode" or "72 pop/ASCIIHexEncode"; will be surrounded as
- * `currentfile ... filter'
- */
- GSEncode(GenBuffer::Writable &out_, char const*filter_psname);
- inline virtual ~GSEncode() {}
- /* vvv Imp: correct these */
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- class P: public Filter::PipeE {
- protected: virtual void vi_check();
- public: P(GenBuffer::Writable &out_, char const*filter_psname);
- };
- /** We need this delegator because `delete ...' won't work with multiple
- * inheritance. (?? )
- */
- P p;
-};
-
-class CjpegEncode: public PSEncoder {
- public:
- /** @param filter_psname is a full-featured PostScript *Encode filter
- * specification string, for example: "<</Effort 5>>/FlateEncode" or
- * "0/RunLengthEncode" or "72 pop/ASCIIHexEncode"; will be surrounded as
- * `currentfile ... filter'
- */
- CjpegEncode(GenBuffer::Writable &out_, char const*filter_psname, slen_t Columns, slen_t Rows, bool rgbp_, unsigned char quality);
- inline virtual ~CjpegEncode() {}
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- class P: public Filter::PipeE { public:
- // protected: virtual void vi_check();
- P(GenBuffer::Writable &out_, slen_t Columns, slen_t Rows, bool rgbp_, unsigned char quality);
- protected: /* Not needed: protected -> public: pacify VC6.0 */
- virtual void vi_copy(FILE *f);
- bool rgbp;
- };
- /** We need this delegator because `delete ...' won't work with multiple
- * inheritance. (?? )
- */
- P p;
-};
-
-#if !USE_BUILTIN_LZW
-class Lzw_codecEncode: public PSEncoder {
- public:
- /** @param filter_psname is a full-featured PostScript *Encode filter
- * specification string, for example: "<</Effort 5>>/FlateEncode" or
- * "0/RunLengthEncode" or "72 pop/ASCIIHexEncode"; will be surrounded as
- * `currentfile ... filter'
- */
- Lzw_codecEncode(GenBuffer::Writable &out_, char const*filter_psname);
- inline virtual ~Lzw_codecEncode() {}
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- class P: public Filter::PipeE { public:
- // protected: virtual void vi_check();
- P(GenBuffer::Writable &out_);
- protected:
- // virtual void vi_copy(FILE *f);
- };
- /** We need this delegator because `delete ...' won't work with multiple
- * inheritance. (?? )
- */
- P p;
-};
-#endif
-
-class TIFFPredictor2: public Encoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- TIFFPredictor2(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- unsigned PTS_INT32_T h;
- unsigned char *obuf, *op, bpc, cpp;
- slen_t rlen;
- GenBuffer::Writable &out;
-};
-
-class PNGPredictorNone: public Encoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- PNGPredictorNone(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- slen_t rlen, opleft;
- GenBuffer::Writable &out;
-};
-
-class PNGPredictorSub: public Encoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- PNGPredictorSub(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- unsigned PTS_INT32_T h;
- unsigned char *obuf, *op;
- slen_t rlen;
- GenBuffer::Writable &out;
- unsigned char bpccpp;
-};
-
-class PNGPredictorUp: public Encoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- PNGPredictorUp(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- unsigned char *obuf, *op, *oq;
- slen_t rlen;
- GenBuffer::Writable &out;
-};
-
-class PNGPredictorAverage: public Encoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- PNGPredictorAverage(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- unsigned PTS_INT32_T h/*, g*/;
- unsigned char *obuf, *op, *oq;
- slen_t rlen;
- GenBuffer::Writable &out;
- unsigned char bpccpp;
-};
-
-class PNGPredictorPaeth: public Encoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- PNGPredictorPaeth(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- unsigned PTS_INT32_T h, g;
- unsigned char *obuf, *op, *oq;
- slen_t rlen;
- GenBuffer::Writable &out;
- unsigned char bpccpp;
-};
-
-class PNGPredictorAuto: public Encoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- PNGPredictorAuto(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- unsigned PTS_INT32_T h, g;
- unsigned char *obuf, *o_prior, *o_0, *o_1, *o_2, *o_3, *o_4, *oo[5];
- slen_t rlen;
- GenBuffer::Writable &out;
- unsigned char bpccpp;
- slen_t opleft;
-};
-
-/* Imp: code reuse with PNGPredictorAuto */
-class PNGPredictorAutoUnsigned: public Encoder {
- public:
- /** @param maxcpl_: maximum # hex digits per line, should be even */
- PNGPredictorAutoUnsigned(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_);
- virtual void vi_write(char const*buf, slen_t len);
- protected:
- unsigned PTS_INT32_T h, g;
- unsigned char *obuf, *o_prior, *o_0, *o_1, *o_2, *o_3, *o_4, *oo[5];
- slen_t rlen;
- GenBuffer::Writable &out;
- unsigned char bpccpp;
- slen_t opleft;
-};
-
-/* --- */
-
-FlateStoreEncode::FlateStoreEncode(GenBuffer::Writable &out_)
- :out(out_)
- ,s1(1)
- ,s2(0)
- ,had_header(false)
- ,abuflen(0)
- {}
-
-#if 0
-/** 0x7801: ZLIB header signaling fastest compression
- * 0: 2 bits: DEFLATE block header signaling stored (uncompressed) block +
- * 6 bits of padding.
- */
-char FlateStoreEncode::header[3]= { 0x78, 1, 0 };
-#endif
-
-void FlateStoreEncode::vi_write(char const*buf, slen_t len) {
- register s_t sold;
- register char const*p=buf; char const*pend=p+len;
- (void)sold;
- if (len==0) { /* EOF: flush and send trailer */
- /* Dat: Last block has to be written even if it's empty. */
- if (!had_header) { out.vi_write("\x78\x01", 2); had_header=true; }
- abuf[0]=(char)1; /* Last, stored block with padding */
- abuf[1]=abuflen; abuf[2]=abuflen>>8;
- abuf[3]=~(abuflen); abuf[4]=~(abuflen>>8);
- out.vi_write(abuf, abuflen+5);
- if (s1>=65521) s1-=65521;
- if (s2>=65521) s2-=65521;
- unsigned char trailer[4];
- trailer[0]=s2>>8; trailer[1]=s2&255; trailer[2]=s1>>8; trailer[3]=s1&255;
- out.vi_write((char const*)trailer,4);
- out.vi_write(0,0); /* Signal EOF */
- return;
- }
- /* From rfc1950.txt:
- Adler-32 is composed of two sums accumulated per byte: s1 is
- the sum of all bytes, s2 is the sum of all s1 values. Both sums
- are done modulo 65521. s1 is initialized to 1, s2 to zero. The
- Adler-32 checksum is stored as s2*65536 + s1 in most-
- significant-byte first (network) order.
- */
- /* Update Adler-32 checksum */
- while (p!=pend) {
- #if SIZEOF_INT>2
- if ((s1+=*(unsigned char const*)p)>=65521) s1-=65521;
- if ((s2+=s1)>=65521) s2-=65521;
- #elif SIZEOF_SHORT==2
- sold=s1;
- if ((s1+=*(unsigned char const*)p))<sold) s1+=15; /* 15==65536-21 */
- sold=s2;
- s2=(s2+s1)&0xffff;
- if ((s2+=s1)<sold) s2+=15;
- #else
- /* vvv 0xffff is needed since unsigned short may be > 0..65535 */
- sold=s1;
- s1=(s1+*(unsigned char const*)p)&0xffff;
- if (s1<sold) s1+=15; /* 15==65536-21 */
- sold=s2;
- s2=(s2+s1)&0xffff;
- if (s2<sold) s2+=15;
- #endif
- p++;
- }
- // fprintf(stderr, "len=%u\n", len);
- unsigned abufleft;
- while ((abufleft=ABUFSIZE-abuflen)<len) {
- // putchar('.');
- // fprintf(stderr, "ABUFSIZE=%u abuflen=%u\n", ABUFSIZE, abuflen);
- memcpy(abuf+abuflen+5, buf, abufleft);
- abuf[0]=0; /* Stored block with padding */
- abuf[1]=(char)ABUFSIZE; abuf[2]=(char)(ABUFSIZE>>8);
- abuf[3]=(char)~(ABUFSIZE); abuf[4]=(char)~(ABUFSIZE>>8);
- if (!had_header) { out.vi_write("\x78\x01", 2); had_header=true; }
- /* fprintf(stderr,"%02x %02x", abuf[1], abuf[2]); */
- out.vi_write(abuf, ABUFSIZE+5); /* emit next stored block with header */
- abuflen=0;
- len-=abufleft;
- buf+=abufleft;
- }
- // putchar('X');
- memcpy(abuf+abuflen+5, buf, len);
- abuflen+=len;
- /* Now abuf is possibly full. That is intentional, so we will be able to
- * emit a full last block instead of an empty one.
- */
-}
-
-/* --- */
-
-ASCIIHexEncode::ASCIIHexEncode(GenBuffer::Writable &out_, unsigned maxcpl_)
- :maxcpl(maxcpl_)
- ,curcpl(0)
- ,out(out_) {}
-
-void ASCIIHexEncode::vi_write(char const*buf, slen_t len) {
- /* Imp: buffering (1K etc.) */
- static char const hextable []="0123456789abcdef";
- char obuf[3];
- obuf[0]='\n';
- if (len==0) { out.vi_write(">",1); out.vi_write(0,0); }
- else while (len--!=0) {
- obuf[1]=hextable[(*(unsigned char const*)buf)>>4];
- obuf[2]=hextable[(*(unsigned char const*)buf)&15];
- if (curcpl>=maxcpl) { curcpl=2; out.vi_write(obuf, 3); }
- else { curcpl+=2; out.vi_write(obuf+1, 2); }
- buf++;
- }
-}
-
-/* --- */
-
-ASCII85Encode::ASCII85Encode(GenBuffer::Writable &out_, unsigned maxcpl_)
- :maxcpl(maxcpl_)
- ,out(out_)
- ,ascii85breaklen(maxcpl_)
- ,ascii85left(4) {
- obufend=(op=obuf=new char[4096])+4096;
-}
-
-void ASCII85Encode::vi_write(char const*buf, slen_t len) {
- if (len==0) {
- char encoded[6];
- assert(ascii85left<=4);
- if (ascii85left!=4) {
- unsigned PTS_INT32_T buf_=ascii85buf<<8*ascii85left;
- unsigned PTS_INT32_T q;
- unsigned w1;
-
- q = buf_ / ((unsigned PTS_INT32_T)85*85*85*85); /* actually only a byte */
- assert(q<=85);
- encoded[0] = q + '!';
-
- buf_ -= q * ((unsigned PTS_INT32_T)85*85*85*85); q = buf_ / ((unsigned PTS_INT32_T)85*85*85);
- encoded[1] = q + '!';
-
- buf_ -= q * ((unsigned PTS_INT32_T)85*85*85); q = buf_ / (85*85);
- encoded[2] = q + '!';
-
- w1 = (unsigned) (buf_ - q*(unsigned PTS_INT32_T)(85*85));
- assert(w1/85<85);
- encoded[3] = (w1 / 85) + '!';
- encoded[4] = (w1 % 85) + '!';
- encoded[5-ascii85left] = '\0';
- char* cp;
- for (cp = encoded; *cp!='\0'; ) {
- if (op==obufend) out.vi_write(op=obuf, obufend-obuf);
- // if (*cp<='!') { fprintf(stderr, "e=%d.\n", cp-encoded); }
- assert(*cp>='!');
- assert(*cp<='~');
- *op++=*cp++;
- if (--ascii85breaklen == 0) {
- if (op==obufend) out.vi_write(op=obuf, obufend-obuf);
- *op++='\n';
- ascii85breaklen = maxcpl;
- }
- } /* NEXT */
- } /* IF */
- if (op!=obuf) out.vi_write(obuf, op-obuf); /* flush buffer cache */
- out.vi_write("~>",2); out.vi_write(0,0);
- delete [] obuf;
- obuf=(char*)NULLP;
- } else {
- assert(obuf!=NULLP);
- register unsigned PTS_INT32_T abuf=ascii85buf;
- register unsigned aleft=ascii85left;
- assert(aleft>=1 && aleft<=4);
- do {
- while (len!=0 && aleft!=0) {
- abuf=(abuf<<8)+*(unsigned char const*)buf++; len--; aleft--;
- }
- if (aleft!=0) break;
- wout(abuf);
- aleft=4;
- } while (len!=0);
- ascii85buf=abuf; ascii85left=aleft;
- }
-}
-
-void ASCII85Encode::wout(unsigned PTS_INT32_T buf_) {
- char encoded[6];
- if (buf_ != (unsigned PTS_INT32_T)0) {
- unsigned PTS_INT32_T q;
- unsigned w1;
-
- q = buf_ / ((unsigned PTS_INT32_T)85*85*85*85); /* actually only a byte */
- encoded[0] = q + '!';
-
- buf_ -= q * ((unsigned PTS_INT32_T)85*85*85*85); q = buf_ / ((unsigned PTS_INT32_T)85*85*85);
- encoded[1] = q + '!';
-
- buf_ -= q * ((unsigned PTS_INT32_T)85*85*85); q = buf_ / (85*85);
- encoded[2] = q + '!';
-
- w1 = (unsigned) (buf_ - q*(unsigned PTS_INT32_T)(85*85));
- encoded[3] = (w1 / 85) + '!';
- encoded[4] = (w1 % 85) + '!';
- encoded[5] = '\0';
- } else {
- encoded[0] = 'z', encoded[1] = '\0';
- }
- char* cp;
- for (cp = encoded; *cp!='\0'; ) {
- if (op==obufend) out.vi_write(op=obuf, obufend-obuf);
- assert(*cp>='!');
- assert(*cp<='~');
- *op++=*cp++;
- if (--ascii85breaklen == 0) {
- if (op==obufend) out.vi_write(op=obuf, obufend-obuf);
- *op++='\n';
- ascii85breaklen = maxcpl;
- }
- }
-}
-
-/* --- */
-
-RunLengthEncode::RunLengthEncode(GenBuffer::Writable &out_, slen_t RecordSize_)
- :recordsize(RecordSize_==0?(slen_t)-1:RecordSize_)
- ,out(out_) {
- record_left=recordsize;
- // obufend=(op=obuf=new char[4096])+4096; /* Imp: implement write buffering */
- saved_c=saved_rep=0;
-}
-
-void RunLengthEncode::vi_write(char const*buf, slen_t len) {
- unsigned j, umax;
- char b;
- if (len==0) { /* handle EOF */
- if (saved_rep!=0) {
- assert(saved_rep>=2);
- (saved+1)[-1]=257-saved_rep;
- (saved+1)[1]=(char)128; /* EOD */
- out.vi_write((saved+1)-1,3);
- // fprintf(stderr,"rd=%u\n",saved_rep);
- } else if (saved_c!=0) {
- (saved+1)[-1]=saved_c-1;
- (saved+1)[saved_c]=(char)128; /* EOD */
- out.vi_write((saved+1)-1, saved_c+2);
- // fprintf(stderr,"re=%u\n",saved_c);
- } else {
- (saved+1)[-1]=(char)128;
- out.vi_write((saved+1)-1, 1);
- }
- out.vi_write(0,0); /* propagate EOF */
- record_left=0; /* signal that no further data will be accepted */
- return;
- }
- again:
- assert(record_left>=1);
- assert(len>=1);
- /* Imp: locally cache vars saved* */
- j=0;
- if (saved_c==0) {
- saved_rep=0; saved_c=1; b=(saved+1)[0]=*buf++; len--;
- if (0==--record_left) goto put_norep;
- if (0==len) return;
- goto yes;
- }
- if (saved_c==1 && saved_rep==0) { yes:
- if (*buf++==(saved+1)[0]) {
- saved_rep=2; len--;
- if (0==--record_left) goto put_rep;
- } else {
- (saved+1)[1]=buf[-1]; saved_c=2; len--;
- if (0==--record_left) goto put_norep;
- }
- if (0==len) return;
- }
- assert(record_left>=1);
- assert(len>=1);
- assert((saved_rep==0 && saved_c>=2) || (saved_rep>=2 && saved_c==1));
- if (saved_rep!=0) { /* Try to increase the repeating sequence */
- assert(saved_rep>=2);
- assert(saved_c==1);
- assert(len>=1);
- b=(saved+1)[0];
- umax=len>128?128:len; if (umax>record_left) umax=record_left;
- /* fprintf(stderr,"um1=%u\n", umax); */
- if (umax>128-saved_rep) umax=128-saved_rep;
- assert(umax>=1);
- j=0; while (j!=umax && buf[j]==b) { j++; saved_rep++; }
- if (j!=len || saved_rep==128) {
- put_rep: /* Found a maximal repeat width */
- (saved+1)[-1]=257-saved_rep;
- out.vi_write((saved+1)-1,2);
- /* fprintf(stderr,"ra=%u\n",saved_rep); */
- if ((record_left-=j)==0) record_left=recordsize;
- buf+=j;
- saved_c=saved_rep=0;
- if (0==(len-=j)) return;
- goto again;
- } /* Current repeat width can be further increased */
- } else { /* Try to increase the non-repeating sequence */
- assert(saved_c>=2);
- if (buf[0]==(saved+1)[saved_c-1]) { /* this decision might be sub-optimal */
- saved_c--;
- /* Now: saved_c: non-repeat length, >=1 */
- (saved+1)[-1]=saved_c-1;
- out.vi_write((saved+1)-1, saved_c+1);
- /* fprintf(stderr,"rb=%u\n",saved_c); */
- // record_left++; /* because of saved_c--; but we would increase it later anyway */
- // buf+=saved_c;
- (saved+1)[0]=buf[0]; /* first matching char-pair data */
- saved_c=1; saved_rep=2; /* make the new block a >=2 repeat */
- record_left--; buf++;
- if (0==--len) return;
- goto again;
- }
- (saved+1)[saved_c++]=buf[0];
- //record_left--;
- //buf++;
- //len--;
- //if (saved_c==128) goto put_norep;
- //if (0==len) return;
- umax=len>128?128:len; if (umax>record_left) umax=record_left;
- if (umax>128-saved_c) umax=128-saved_c;
- /* fprintf(stderr,"um2=%u\n", umax); */
- assert(umax>=1);
- j=1; while (j!=umax && buf[j]!=buf[j-1]) (saved+1)[saved_c++]=buf[j++];
- if (j!=len || saved_c==128) {
- put_norep: /* Found a maximal non-repeat width */
- (saved+1)[-1]=saved_c-1;
- out.vi_write((saved+1)-1, saved_c+1);
- /* fprintf(stderr,"rc=%u\n",saved_c); */
- if ((record_left-=j)==0) record_left=recordsize;
- buf+=j;
- saved_c=saved_rep=0;
- if (0==(len-=j)) return;
- goto again;
- } /* Current non-repeat width can be further increased */
- }
- assert(j==len);
- record_left-=j;
- assert(saved_rep<128);
- assert(saved_c<128);
-}
-
-/* --- */
-
-#if USE_BUILTIN_ZIP
-// bool FlateEncode::locked=false;
-
-#if PTS_DEFL_RIPPED_ZLIB
-FlateEncode::FlateEncode(GenBuffer::Writable &out_, unsigned level_)
- :out(out_) {
- // assert(!locked); locked /* locking is not necessary anymore */
- // pts_deflate_init(&fs); /* obsolete */
- zs.total_in=0;
- zs.total_out=0;
- zs.workspace=workspace;
- zs.msg=(char*)0;
- zs.state=(struct zlib_internal_state*)0;
- zs.data_type=Z_UNKNOWN; /* Imp: do we have to initialize it? */
- assert(zlib_deflate_workspacesize()+(unsigned)0<sizeof(workspace) && "Flate workspace too small");
- if (Z_OK!=zlib_deflateInit(&zs, level_))
- Error::sev(Error::EERROR) << "Flate init error (out of memory?)" << (Error*)0;
-}
-
-void FlateEncode::vi_write(char const*buf, slen_t len) {
- slen_t got, zgot;
- /* fprintf(stderr,"wcall\n"); */
- zs.next_in=(unsigned char*)const_cast<char*>(buf); zs.avail_in=len;
- if (len==0) { /* flush all output */
- do { /* SUXX: C compiler should emit a warning: while (1) { ... } while(...); */
- zs.next_out=(unsigned char*)obuf; zs.avail_out=sizeof(obuf);
- /* fprintf(stderr,"wdone zai=%d zao=%d\n", zs.avail_in, zs.avail_out); */
- if (Z_STREAM_END!=(zgot=zlib_deflate(&zs, Z_FINISH)) && Z_OK!=zgot)
- Error::sev(Error::EERROR) << "Flate close error: " << zs.msg << (Error*)0;
- got=sizeof(obuf)-zs.avail_out;
- /* fprintf(stderr, "got=%u zgot=%d Z_OK=%d\n", got, zgot, Z_OK); */
- if (got>0) out.vi_write(obuf, got);
- } while (zgot==Z_OK);
- /* Dat: zlib_deflateEnd() will be called in the destructur */
- out.vi_write(0,0); /* Signal EOF */
- /* Dat: zlib_deflate() adds RFC 1950 header and adler32 checksum automatically */
- } else {
- do {
- /* fprintf(stderr,"writ\n"); */
- zs.next_out=(unsigned char*)obuf; zs.avail_out=sizeof(obuf);
- if (Z_OK!=zlib_deflate(&zs, 0))
- Error::sev(Error::EERROR) << "Flate write error: " << zs.msg << (Error*)0;
- if (0<(got=sizeof(obuf)-zs.avail_out)) out.vi_write(obuf, got);
- } while (0!=zs.avail_in);
- }
-}
-#else
-FlateEncode::FlateEncode(GenBuffer::Writable &out_, unsigned level_)
- :out(out_)
- ,s1(1)
- ,s2(0)
- ,had_header(false) {
- // assert(!locked); locked /* locking is not necessary anymore */
- // pts_deflate_init(&fs); /* obsolete */
- fs=pts_defl_new(
- /*zpfwrite=*/ gen_write,
- /*zpfmalloc=*/ gen_malloc,
- /*zpffree=*/ gen_free,
- /*pack_level=*/ level_,
- /*zfile=*/ (void*)&out_
- );
- if (fs==NULL) Error::sev(Error::EERROR) << "Flate init error (out of memory?)" << (Error*)0;
-}
-void *FlateEncode::gen_malloc(unsigned n) {
- return operator new(n);
- // return new char[n];
-}
-void FlateEncode::gen_free(void *p) {
- /*return*/ operator delete(p);
- // delete [] (char*)p;
-}
-
-void FlateEncode::vi_write(char const*buf, slen_t len) {
- register s_t sold;
- register char const*p=buf; char const*pend=p+len;
- (void)sold;
- if (!had_header) {
- out.vi_write("\x78\xda",2); /* ZLIB (RFC 1950): max compression header */
- had_header=true;
- }
- if (len==0) { /* EOF: send trailer */
- fs->deflate2(0,0,fs); /* Let the compressor flush its buffers. */
- if (fs->err!=0) Error::sev(Error::EERROR) << "Flate compression error" << (Error*)0;
- fs->delete2(fs);
- fs=(struct pts_defl_interface*)NULL;
- if (s1>=65521) s1-=65521;
- if (s2>=65521) s2-=65521;
- unsigned char trailer[4];
- trailer[0]=s2>>8; trailer[1]=s2&255; trailer[2]=s1>>8; trailer[3]=s1&255;
- out.vi_write((char const*)trailer,4);
- out.vi_write(0,0); /* Signal EOF */
- return;
- }
- assert(fs!=NULL);
-
- /* From rfc1950.txt:
- Adler-32 is composed of two sums accumulated per byte: s1 is
- the sum of all bytes, s2 is the sum of all s1 values. Both sums
- are done modulo 65521. s1 is initialized to 1, s2 to zero. The
- Adler-32 checksum is stored as s2*65536 + s1 in most-
- significant-byte first (network) order.
- */
- /* Update Adler-32 checksum */
- while (p!=pend) {
- #if SIZEOF_INT>2
- if ((s1+=*(unsigned char const*)p)>=65521) s1-=65521;
- if ((s2+=s1)>=65521) s2-=65521;
- #elif SIZEOF_SHORT==2
- sold=s1;
- if ((s1+=*(unsigned char const*)p))<sold) s1+=15; /* 15==65536-21 */
- sold=s2;
- s2=(s2+s1)&0xffff;
- if ((s2+=s1)<sold) s2+=15;
- #else
- /* vvv 0xffff is needed since unsigned short may be > 0..65535 */
- sold=s1;
- s1=(s1+*(unsigned char const*)p)&0xffff;
- if (s1<sold) s1+=15; /* 15==65536-21 */
- sold=s2;
- s2=(s2+s1)&0xffff;
- if (s2<sold) s2+=15;
- #endif
- p++;
- }
- while (len>=0x8000) { fs->deflate2(const_cast<char*>(buf),0x8000, fs); len-=0x8000; buf+=0x8000; }
- if (len!=0) fs->deflate2(const_cast<char*>(buf),len, fs);
-}
-#endif /* PTS_DEFL_RIPPED_ZLIB */
-#endif /* USE_BUILTIN_ZIP */
-
-int /*FlateEncode::*/gen_write(char *block, unsigned len, void *zfile) {
- static_cast<GenBuffer::Writable*>(zfile)->vi_write(block, len);
- return 0;
-}
-
-
-/* --- */
-
-#if USE_BUILTIN_FAXE
-void* CCITTFaxEncode::gen_xalloc(unsigned n) {
- return operator new(n);
- // void *ret; if ((ret=malloc(n))==0) abort(); return ret;
-}
-void CCITTFaxEncode::gen_free(void *ptr) {
- /*return*/ operator delete(ptr);
- // free(ptr);
-}
-void CCITTFaxEncode::gen_memset(void *s, int c, unsigned n) {
- /*return*/ memset(s,c,n);
-}
-void CCITTFaxEncode::gen_memcpy(void *dest, const void *src, unsigned n) {
- /*return*/ memcpy(dest, src, n);
-}
-CCITTFaxEncode::CCITTFaxEncode(GenBuffer::Writable &out_, slendiff_t K, slen_t Columns, bool EndOfLine, bool BlackIs1): out(out_) {
- sCFEs.memset_=gen_memset;
- sCFEs.xalloc_=gen_xalloc;
- sCFEs.free_=gen_free;
- sCFEs.memcpy_=gen_memcpy;
- s_CFE_template.set_defaults((stream_state*)&sCFEs);
- sCFEs.K=K;
- sCFEs.Columns=Columns;
- sCFEs.EndOfLine=EndOfLine;
- sCFEs.BlackIs1=BlackIs1;
- const int cf_max_height=(unsigned)-1/2-100; /* Dat: was slen_t */
- if (sCFEs.K < -cf_max_height || sCFEs.K > cf_max_height /* Dat: .K is an int */
- || sCFEs.Columns < 0 || sCFEs.Columns > cfe_max_width /* Dat: .Columns is an int */
- || sCFEs.Rows < 0 || sCFEs.Rows > cf_max_height /* Dat: .Rows is an int */
- || sCFEs.DamagedRowsBeforeError < 0
- || sCFEs.DamagedRowsBeforeError > cf_max_height /* Dat: .DamagedRowsBeforeError is an int */
- || sCFEs.DecodedByteAlign < 1 || sCFEs.DecodedByteAlign > 16
- || (sCFEs.DecodedByteAlign & (sCFEs.DecodedByteAlign - 1)) != 0
- ) Error::sev(Error::EERROR) << "pts_fax: invalid params" << (Error*)0;
- if (0!=s_CFE_template.init((stream_state*)&sCFEs))
- Error::sev(Error::EERROR) << "pts_fax: init failed" << (Error*)0;
- #if __CHECKER__
- memset(&r, 0, sizeof(r));
- memset(&w, 0, sizeof(w));
- #endif
- r.ptr=rlimit=rbuf-1;
- hard=rbuf+sizeof(rbuf)-1;
- assert(hard-r.ptr>=(int)s_CFE_template.min_in_size);
-}
-
-void CCITTFaxEncode::vi_write(char const*buf, slen_t len) {
- int pog;
- // unsigned char *save_wptr;
- if (len==0) {
- r.limit=rlimit;
- do {
- w.ptr=wbuf-1;
- w.limit=wbuf+sizeof(wbuf)-1;
- assert(w.limit-w.ptr>=(int)s_CFE_template.min_out_size);
- pog=s_CFE_template.process((stream_state*)&sCFEs, &r, &w, /*last:*/ true);
- // fprintf(stderr, "pog=%d write=%d last=%d\n", pog, w.ptr-(wbuf-1), true);
- assert(pog!=PTSFAX_ERRC); /* /CCITTFaxEncode filter must accept any input */
- assert(pog!=PTSFAX_EOFC); /* /CCITTFaxEncode filter doesn't have EOD markers */
- if (w.ptr!=wbuf-1) out.vi_write((char const*)wbuf, w.ptr-(wbuf-1));
- } while (pog==1);
- s_CFE_template.release((stream_state*)&sCFEs);
- out.vi_write(0,0); /* propagate EOF */
- return;
- }
-
- while (len!=0) {
- assert(r.ptr==rbuf-1);
- assert(hard>rlimit);
- unsigned clen=hard-rlimit;
- if (clen>len) clen=len;
- assert(clen>0);
- // fprintf(stderr, "clen=%u\n", clen);
- memcpy(rlimit+1, buf, clen);
- rlimit+=clen;
- buf+=clen;
- len-=clen;
- /* if (r.ptr==rlimit) break; */
- r.limit=rlimit;
- do {
- w.ptr=wbuf-1;
- w.limit=wbuf+sizeof(wbuf)-1;
- assert(w.limit-w.ptr>=(int)s_CFE_template.min_out_size);
- pog=s_CFE_template.process((stream_state*)&sCFEs, &r, &w, /*last:*/ false);
- // fprintf(stderr, "len=%d pog=%d write=%d last=%d\n", len, pog, w.ptr-(wbuf-1), false);
- assert(pog!=PTSFAX_ERRC); /* /CCITTFaxEncode filter must accept any input */
- assert(pog!=PTSFAX_EOFC); /* /CCITTFaxEncode filter doesn't have EOD markers */
- if (w.ptr!=wbuf-1) out.vi_write((char const*)wbuf, w.ptr-(wbuf-1));
- } while (pog==1);
- // assert(pog!=1); /* not true: output space is enough (sizeof(wbuf)>min_out_size) */
- assert(pog==0); /* more input is needed */
- if (r.ptr!=rbuf-1) {
- // fprintf(stderr, "limit=%d\n", rlimit-r.ptr);
- memmove(rbuf, r.ptr+1, rlimit-r.ptr);
- rlimit=rbuf-1+(rlimit-r.ptr);
- r.ptr=rbuf-1;
- }
- }
- // fprintf(stderr, "done\n");
-}
-#endif /* USE_BUILTIN_FAXE */
-
-/* --- */
-
-#if USE_BUILTIN_LZW
-LZWEncode::LZWEncode(GenBuffer::Writable &out_): out(out_) {
- fs.tif_writer=/*FlateEncode::*/gen_write;
- fs.tif_sout=(void*)&out_;
- if (0==pts_lzw_init(&fs)) Error::sev(Error::EERROR) << "LZW init error" << (Error*)0;
-}
-
-void LZWEncode::vi_write(char const*buf, slen_t len) {
- /* Imp: report real error _reason_ (if appropriate?? ) */
- if (len==0) {
- if (0==fs.tif_feeder(0,0,&fs)) goto we;
- out.vi_write(0,0); /* propagate EOF */
- return;
- }
- while (len>=0x8000) {
- if (0==fs.tif_feeder(const_cast<char*>(buf),0x8000,&fs)) we:
- Error::sev(Error::EERROR) << "LZW write error" << (Error*)0;
- len-=0x8000; buf+=0x8000;
- }
- if (len!=0 && 0==fs.tif_feeder(const_cast<char*>(buf),len,&fs)) goto we;
-}
-#endif /* USE_BUILTIN_LZW */
-
-/* --- */
-
-#if !USE_BUILTIN_LZW
-Lzw_codecEncode::Lzw_codecEncode(GenBuffer::Writable &out_, char const*filter_psname)
- :p(out_) {
- (void)filter_psname;
-}
-void Lzw_codecEncode::vi_write(char const*buf, slen_t len) { p.vi_write(buf,len); }
-
-/* Imp: figure out path-to-gs: gs or gswin32c */
-Lzw_codecEncode::P::P(GenBuffer::Writable &out_)
- // :PipeEncoder(out_, ">/tmp/t cat - cjpeg quality %i", quality), rgbp(rgbp_) {
- // :Filter::PipeE(out_, "cjpeg -quality %i >%D", quality), rgbp(rgbp_) {
- :Filter::PipeE(out_, "lzw_codec encode >%D") {}
-#endif
-
-/* --- */
-
-CjpegEncode::CjpegEncode(GenBuffer::Writable &out_, char const*filter_psname, slen_t Columns, slen_t Rows, bool rgbp_, unsigned char quality)
- :p(out_, Columns, Rows, rgbp_, quality) {
- (void)filter_psname;
-}
-void CjpegEncode::vi_write(char const*buf, slen_t len) { p.vi_write(buf,len); }
-
-/* Imp: figure out path-to-gs: gs or gswin32c */
-CjpegEncode::P::P(GenBuffer::Writable &out_, slen_t Columns, slen_t Rows, bool rgbp_, unsigned char quality)
- // :PipeEncoder(out_, ">/tmp/t cat - cjpeg quality %i", quality), rgbp(rgbp_) {
- :Filter::PipeE(out_, "cjpeg -quality %i >%D", quality), rgbp(rgbp_) {
- /* Dat: we're extremely lucky that cjpeg can read PGM or PPM files from stdin */
- // operator<<("P5 width height 255\n"); /* RAWBITS PGM */
- // operator<<("P6 width height 255\n"); /* RAWBITS PPM */
- *this << (rgbp_?"P6 ":"P5 ") << Columns << ' ' << Rows << " 255\n";
-}
-void CjpegEncode::P::vi_copy(FILE *f) {
- char r[9];
- static char jfif[9]="\377\340\000\020JFIF";
- static unsigned char adobe[16]= {
- 0xff, /* marker */
- 0xee, /* APP14 */
- 0, /* length-hi */
- 14, /* length-lo */
- 'A', 'd', 'o', 'b', 'e', /* ID */
- 1, /* version-hi */
- 0, /* version-lo */
- 0, 0, /* flags0 */
- 0, 0, /* flags1 */
- 0, /* ColorTransform */
- };
- if (MACRO_GETC(f)!=0xff || MACRO_GETC(f)!=0xd8 || fread(r, 1, 8, f)!=8) {
- bad: Error::sev(Error::EERROR) << "CjpegEncode: cjpeg created bad JPEG" << (Error*)0;
- }
- out.vi_putcc((char)0xff);
- out.vi_putcc((char)0xd8);
- r[9]=r[3]; r[3]='\020';
- if ((unsigned char)r[9]>=6 && 0==memcmp(r, jfif, 8)) { /* JFIF marker */
- r[3]=r[9]; unsigned skip=r[9]-6;
- out.vi_write(r, 8);
- while (skip--!=0) out.vi_putcc(MACRO_GETC(f));
- }
- if (ferror(f) || feof(f)) goto bad;
- /* Now we can emit the Adobe marker. */
- adobe[sizeof(adobe)-1]=rgbp==true; /* ColorTransform value 0 for Gray, 1 for RGB->YCbCr */
- out.vi_write((char*)adobe, sizeof(adobe));
- /* vvv Dat: pacify VC6.0: Filter::PipeE::vi_copy(f); doesn't work */
- PipeE::vi_copy(f);
- /* ^^^ copy rest of file verbatim */
- // ((Filter::PipeE)*this).vi_copy(f);
-}
-
-/* --- */
-
-GSEncode::GSEncode(GenBuffer::Writable &out_, char const*filter_psname)
- :p(out_, filter_psname) {}
-void GSEncode::vi_write(char const*buf, slen_t len) { p.vi_write(buf,len); }
-
-/* Imp: figure out path-to-gs: gs or gswin32c */
-GSEncode::P::P(GenBuffer::Writable &out_, char const*filter_psname)
- :Filter::PipeE(out_, "gs -s_OFN=%D -dNODISPLAY -q - >%E")
- {
- operator<<("{/o _OFN(w)file ");
- operator<<(filter_psname);
- operator<<(" filter def/s 4096 string def"
- "{currentfile s readstring exch o exch writestring not{exit}if}loop "
- "o closefile quit}bind exec\n");
-}
-void GSEncode::P::vi_check() {
- /* If STDOUT of gs is not empty, then it is very probably an error message. */
- // tmpename.term0(); /* already is */
- assert(tmpename.end_()[0]=='\0');
- if (0!=Files::statSize(tmpename())) Error::sev(Error::EERROR) << "GSEncode: GS runtime error" << (Error*)0;
- /* Imp: display a meaningful error message */
-}
-
-/* --- */
-
-PSEncoder* PSEncoder::newASCIIHexEncode(GenBuffer::Writable &out_,unsigned maxcpl_) {
- // SimBuffer::B fp; (fp << maxcpl_ << " pop/ASCIIHexEncode").term0();
- // PSEncoder *ret=new GSEncode(out_, fp());
- PSEncoder *ret=new ASCIIHexEncode(out_,maxcpl_);
- // ret->shortname="AHx"; ret->longname="ASCIIHex";
- // ret->filter_psname << fp;
- return ret;
-}
-PSEncoder* PSEncoder::newASCII85Encode(GenBuffer::Writable &out_,unsigned maxcpl_) {
- // SimBuffer::B fp; (fp << maxcpl_ << " pop/ASCII85Encode").term0();
- PSEncoder *ret=new ASCII85Encode(out_,maxcpl_);
- // PSEncoder *ret=new GSEncode(out_, fp());
- // ret->shortname="A85"; ret->longname="ASCII85";
- // ret->filter_psname << fp;
- return ret;
-}
-PSEncoder* PSEncoder::newCCITTFaxEncode(GenBuffer::Writable &out_,slendiff_t K, slen_t Columns, bool EndOfLine, bool BlackIs1) {
- #if USE_BUILTIN_FAXE
- return new CCITTFaxEncode(out_, K, Columns, EndOfLine, BlackIs1);
- #else
- // (void)out_; (void)K; (void)Columns;
- // assert(0 && "unimplemented");
- SimBuffer::B fp("<< /K ");
- fp << K << "/Columns " << Columns;
- if (EndOfLine) fp << "/EndOfLine true"; /* PS default: false */
- if (BlackIs1) fp << "/BlackIs1 true";
- (fp << ">>/CCITTFaxEncode").term0();
- // fprintf(stderr, "fp=(%s)\n", fp());
- PSEncoder *ret=new GSEncode(out_, fp());
- // ret->shortname="CCF"; ret->longname="CCITTFax";
- // ret->filter_psname << fp; /* Dat: this could be made faster */
- return ret;
- #endif
-}
-PSEncoder* PSEncoder::newLZWEncode(GenBuffer::Writable &out_) {
-#if USE_BUILTIN_LZW
- SimBuffer::B fp("/LZWEncode");
- PSEncoder *ret=new LZWEncode(out_);
- // PSEncoder *ret=new GSEncode(out_, fp());
- // ret->shortname="LZW"; ret->longname="LZW";
- // ret->filter_psname << fp;
- return ret;
-#else
- (void)out_;
- #if 0
- Error::sev(Error::EERROR) << "LZW not supported in this compilation of sam2p" << (Error*)0;
- #endif
- Error::sev(Error::WARNING) << "LZW: please `configure --enable-lzw' for builtin /Compression/LZW support" << (Error*)0;
- #if 0
- /* This is useless, because gs 5.50--7.04 have dummy LZW compressor:
- * it emits a correct LZW stream, but does no real compression, and
- * the file size is often increased.
- */
- PSEncoder *ret=new GSEncode(out_, "/LZWEncode");
- // ret->shortname="LZW"; ret->longname="LZW";
- // ret->filter_psname << "/LZWEncode";
- return ret;
- #endif
- #if 1 /* ask lzw_codec from the author of sam2p */
- return new Lzw_codecEncode(out_, "/LZWEncode");
- #endif
- return 0;
-#endif
-}
-PSEncoder* PSEncoder::newFlateEncode(GenBuffer::Writable &out_, signed Effort) {
- // (void)out_; (void)K; (void)Columns;
- // assert(0 && "unimplemented");
- if (Effort==0) {
- PSEncoder *ret=new FlateStoreEncode(out_);
- // ret->shortname="Fla"; ret->longname="Flate";
- // ret->filter_psname << fp;
- return ret;
- }
- if (Effort<1 || Effort>9) Effort=5;
- #if USE_BUILTIN_ZIP
- PSEncoder *ret=new FlateEncode(out_, Effort);
- #else
- SimBuffer::B fp("<</Effort "); (fp << Effort << ">>/FlateEncode").term0();
- PSEncoder *ret=new GSEncode(out_, fp());
- #endif
- // ret->shortname="Fla"; ret->longname="Flate";
- // ret->filter_psname << fp;
- return ret;
-}
-PSEncoder* PSEncoder::newRunLengthEncode(GenBuffer::Writable &out_, slen_t RecordSize) {
- SimBuffer::B fp; (fp << RecordSize << "/RunLengthEncode").term0();
- PSEncoder *ret=new RunLengthEncode(out_, RecordSize);
- // PSEncoder *ret=new GSEncode(out_, fp());
- // ret->shortname="RL"; ret->longname="RunLength";
- // ret->filter_psname << fp;
- return ret;
-}
-
-PSEncoder* PSEncoder::newDCTIJGEncode(GenBuffer::Writable &out_,
- slen_t Columns,
- slen_t Rows,
- unsigned char Colors, /*1..4*/
- unsigned char quality /*libJPEG quality: 0..100 */
-) {
- /* Dat: this supports only the Gray and RGB color spaces of JPEG */
- param_assert(Colors==1 || Colors==3);
- param_assert(/* quality>=0 && */ quality <=100);
- SimBuffer::B fp("<<IJG ");
- (fp<< "/Columns " << Columns
- << "/Rows " << Rows
- << "/Colors " << (unsigned)Colors
- << ">>/DCTEncode").term0();
- /* Dat: the default of /ColorTransform (defined in DCTEncode in
- subsubsection 3.13.3 in PLRM.pdf) is just perfect. */
- PSEncoder *ret=new CjpegEncode(out_, fp(), Columns, Rows, Colors==3, quality);
- // ret->longname=ret->shortname="DCT"; ret->filter_psname << fp;
- return ret;
-}
-
-PSEncoder* PSEncoder::newDCTEncode(GenBuffer::Writable &out_,
- slen_t Columns,
- slen_t Rows,
- unsigned char Colors, /*1..4*/
- unsigned char quality, /*libJPEG quality: 0..100 */
- unsigned char const*HSamples, /*all 1..4, NULLP OK*/
- unsigned char const*VSamples, /*all 1..4, NULLP OK*/
- unsigned char (*QuantTables)[64], /*NULLP OK*/
- double QFactor, /*0..1000000*/
- unsigned numHuffTables,
- unsigned char **HuffTables, /*NULLP OK*/
- unsigned char ColorTransform /*0,1,2 3=default*/
-) {
- (void)quality;
- (void)QuantTables;
- (void)QFactor;
- (void)numHuffTables;
- (void)HuffTables;
- SimBuffer::B tmp;
- /* Imp: respect quality */
- /* Imp: respect QFactor (double) */
- /* Imp: respect QuantTables */
- /* Imp: respect numHuffTables, HuffTables */
-
- SimBuffer::B fp("<<");
- fp << "/Columns " << Columns
- << "/Rows " << Rows
- << "/Colors " << (unsigned)Colors;
- if (HSamples!=(unsigned char const*)NULLP) {
- tmp.clear(); tmp.vi_write((char const*)HSamples, (unsigned)Colors);
- fp << "/HSamples "; fp.appendDumpPS(tmp,true);
- }
- if (VSamples!=(unsigned char const*)NULLP) {
- tmp.clear(); tmp.vi_write((char const*)VSamples, (unsigned)Colors);
- fp << "/VSamples "; fp.appendDumpPS(tmp,true);
- }
- if (ColorTransform!=3) fp << "/ColorTransform " << (unsigned)ColorTransform;
- (fp << ">>/DCTEncode").term0();
-
- // PSEncoder *ret=new DCTEncode(out_,? ? ?);
- PSEncoder *ret=new GSEncode(out_, fp());
- // ret->shortname="DCT"; ret->longname="DCT";
- // ret->filter_psname << fp;
- return ret;
-}
-
-PSEncoder* 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
-) {
- SimBuffer::B fp("<<");
- fp << "/Columns " << Columns
- << "/Rows " << Rows
- << "/Colors " << (unsigned)Colors;
- if (ColorTransform!=3) fp << "/ColorTransform " << (unsigned)ColorTransform;
- (fp << other_parameters << ">>/DCTEncode").term0();
- PSEncoder *ret=new GSEncode(out_, fp());
- // ret->shortname="DCT"; ret->longname="DCT";
- // ret->filter_psname << fp;
- return ret;
-}
-
-/* --- */
-
-TIFFPredictor2::TIFFPredictor2(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_)
- : h(0), bpc(bpc_), cpp(cpp_), out(out_) {
- param_assert(cpp_*bpc_<=32);
- rlen=(columns_*cpp_*bpc_+7)>>3; /* BUGFIX at Tue Mar 12 12:09:51 CET 2002 */
- op=obuf=new unsigned char[rlen];
-}
-
-void TIFFPredictor2::vi_write(char const*buf, slen_t len) {
- unsigned char const *p=(unsigned char const*)buf, *pend0=p+len;
- slen_t opleft=rlen-(op-obuf);
- register unsigned int i, d, o, bpccpp;
- if (len==0) {
- assert(opleft==rlen); /* unflushed (half-ready) row disallowed */
- assert(obuf!=NULLP);
- delete [] obuf;
- obuf=(unsigned char*)NULLP;
- out.vi_write(0,0);
- return;
- }
- bpccpp=(cpp-1)*bpc;
- if (bpc==1) {
- while (p!=pend0) {
- i=*p++;
- d=(i>>7); o =((d-((h>>bpccpp)))&1)<<7; h=(h<<1)|d;
- d=(i>>6); o|=((d-((h>>bpccpp)))&1)<<6; h=(h<<1)|d;
- d=(i>>5); o|=((d-((h>>bpccpp)))&1)<<5; h=(h<<1)|d;
- d=(i>>4); o|=((d-((h>>bpccpp)))&1)<<4; h=(h<<1)|d;
- d=(i>>3); o|=((d-((h>>bpccpp)))&1)<<3; h=(h<<1)|d;
- d=(i>>2); o|=((d-((h>>bpccpp)))&1)<<2; h=(h<<1)|d;
- d=(i>>1); o|=((d-((h>>bpccpp)))&1)<<1; h=(h<<1)|d;
- d=(i ); o|=((d-((h>>bpccpp)))&1) ; h=(h<<1)|d;
- *op++=o;
- if (--opleft==0) { h=0; out.vi_write((char*)obuf,rlen); op=obuf; opleft=rlen; }
- }
- } else if (bpc==2) {
- while (p!=pend0) {
- i=*p++;
- d=(i>>6); o =((d-((h>>bpccpp)))&3)<<6; h=(h<<2)|d; // fprintf(stderr,"d=%#x\n", d);
- d=(i>>4); o|=((d-((h>>bpccpp)))&3)<<4; h=(h<<2)|d;
- d=(i>>2); o|=((d-((h>>bpccpp)))&3)<<2; h=(h<<2)|d;
- d=(i ); o|=((d-((h>>bpccpp)))&3) ; h=(h<<2)|d;
- *op++=o;
- if (--opleft==0) { h=0; out.vi_write((char*)obuf,rlen); op=obuf; opleft=rlen; }
- }
- } else if (bpc==4) {
- while (p!=pend0) {
- i=*p++;
- d=(i>>4); o =((d-((h>>bpccpp)))&15)<<4; h=(h<<4)|d;
- d=(i ); o|=((d-((h>>bpccpp)))&15) ; h=(h<<4)|d;
- *op++=o;
- if (--opleft==0) { h=0; out.vi_write((char*)obuf,rlen); op=obuf; opleft=rlen; }
- }
- } else if (bpc==8) {
- while (p!=pend0) {
- i=*p++; *op++=((i-((h>>bpccpp)))/*&255*/); h=(h<<8)|i;
- if (--opleft==0) { h=0; out.vi_write((char*)obuf,rlen); op=obuf; opleft=rlen; }
- }
- } else assert(0);
-}
-
-/* --- */
-
-PNGPredictorNone::PNGPredictorNone(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_)
- : opleft(0), out(out_) {
- rlen=(columns_*cpp_*bpc_+7)>>3;
-}
-
-void PNGPredictorNone::vi_write(char const*buf, slen_t len) {
- if (len==0) {
- assert(opleft==0); /* unflushed (half-ready) row disallowed */
- out.vi_write(0,0);
- return;
- }
- /* The following code just inserts a '\0' in front of each scanline */
- /* Imp: make it faster by collapsing vi_writes */
- if (opleft==0) { opleft=rlen; out.vi_write("\0",1); } /* Scanline (row) header: describes predictor used */
- while (len>opleft) {
- out.vi_write(buf,opleft);
- buf+=opleft; len-=opleft;
- opleft=rlen; out.vi_write("\0",1); /* Scanline (row) header: describes predictor used */
- }
- if (len!=0) out.vi_write(buf,len);
- opleft-=len;
-}
-
-/* --- */
-
-PNGPredictorSub::PNGPredictorSub(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_)
- : h(0), out(out_) {
- param_assert(cpp_*bpc_<=32);
- rlen=(columns_*cpp_*bpc_+7)>>3;
- op=obuf=1+new unsigned char[rlen+1];
- obuf[-1]='\1'; /* Scanline (row) header: describes predictor used */
- bpccpp=((cpp_*bpc_+7)&~7)-8;
-}
-
-void PNGPredictorSub::vi_write(char const*buf, slen_t len) {
- unsigned char const *p=(unsigned char const*)buf, *pend0=p+len;
- slen_t opleft=rlen-(op-obuf);
- register unsigned int i;
- if (len==0) {
- assert(opleft==rlen); /* unflushed (half-ready) row disallowed */
- assert(obuf!=NULLP);
- delete [] (obuf-1);
- obuf=(unsigned char*)NULLP;
- out.vi_write(0,0);
- return;
- }
- while (p!=pend0) {
- i=*p++; *op++=((i-((h>>bpccpp)))/*&255*/); h=(h<<8)|i;
- if (--opleft==0) { h=0;
- out.vi_write((char*)obuf-1,rlen+1); op=obuf; opleft=rlen;
- }
- }
-}
-
-/* --- */
-
-PNGPredictorUp::PNGPredictorUp(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_)
- : out(out_) {
- rlen=(columns_*cpp_*bpc_+7)>>3;
- // fprintf(stderr, "rUp.rlen=%u cpp=%u bpc=%u\n", rlen, cpp_, bpc_);
- op=obuf=1+new unsigned char[2*rlen+1];
- oq=op+rlen; /* prev scanline */
- memset(oq, '\0', rlen);
- obuf[-1]='\2'; /* Scanline (row) header: describes predictor used */
-}
-
-void PNGPredictorUp::vi_write(char const*buf, slen_t len) {
- unsigned char const *p=(unsigned char const*)buf, *pend0=p+len;
- slen_t opleft=rlen-(op-obuf);
- if (len==0) {
- assert(opleft==rlen); /* unflushed (half-ready) row disallowed */
- assert(obuf!=NULLP);
- delete [] (obuf-1);
- obuf=(unsigned char*)NULLP;
- out.vi_write(0,0);
- return;
- }
- while (p!=pend0) {
- *op++=((*p-*oq)/*&255*/); *oq++=*p++;
- if (--opleft==0) {
- out.vi_write((char*)obuf-1,rlen+1); opleft=rlen;
- op=obuf; oq=obuf+rlen;
- }
- }
-}
-
-/* --- */
-
-PNGPredictorAverage::PNGPredictorAverage(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_)
- : h(0), /*g(0),*/ out(out_) {
- param_assert(cpp_*bpc_<=32);
- rlen=(columns_*cpp_*bpc_+7)>>3;
- op=obuf=1+new unsigned char[2*rlen+1];
- oq=op+rlen; /* prev scanline */
- memset(oq, '\0', rlen);
- obuf[-1]='\3'; /* Scanline (row) header: describes predictor used */
- bpccpp=((cpp_*bpc_+7)&~7)-8;
-}
-
-void PNGPredictorAverage::vi_write(char const*buf, slen_t len) {
- unsigned char const *p=(unsigned char const*)buf, *pend0=p+len;
- slen_t opleft=rlen-(op-obuf);
- register unsigned int i;
- if (len==0) {
- assert(opleft==rlen); /* unflushed (half-ready) row disallowed */
- assert(obuf!=NULLP);
- delete [] (obuf-1);
- obuf=(unsigned char*)NULLP;
- out.vi_write(0,0);
- return;
- }
- while (p!=pend0) {
- /* vvv Data: *og+h can be 0..510 */
- i=*p; *op++=i-((((h>>bpccpp)&255)+*oq)>>1); h=(h<<8)|i; *oq++=*p++;
- // i=*p; *op++=(*p-((*oq+h)>>1)/*&255*/); h=i; *oq++=*p++;
- if (--opleft==0) {
- out.vi_write((char*)obuf-1,rlen+1); opleft=rlen;
- op=obuf; oq=obuf+rlen; h=0;
- }
- }
-}
-
-/* --- */
-
-/* Dat: egcs-2.91.60 is buggy */
-// static inline unsigned abs_(unsigned i) { return ((signed)i)<0 ? -i : i; }
-static inline unsigned abs_(unsigned i) { return ((signed)i)<0 ? (i*-1) : i; }
-
-static inline unsigned paeth_predictor(unsigned a, unsigned b, unsigned c) {
- /* Code ripped from RFC 2083 (PNG specification), which also says:
- * The calculations within the PaethPredictor function must be
- * performed exactly, without overflow. Arithmetic modulo 256 is to
- * be used only for the final step of subtracting the function result
- * from the target byte value.
- */
- /* a = left, b = above, c = upper left */
- unsigned p = a + b - c; /* initial estimate */
- unsigned pa = abs_(p - a); /* distances to a, b, c */
- unsigned pb = abs_(p - b);
- unsigned pc = abs_(p - c);
- // assert(abs_(3*(-1))==3);
- // fprintf(stderr, "b=%u c=%u %d %d\n", b, c, p-b, ((signed)(p-b))<0 ? (b-p) : (p-b) );
- // fprintf(stderr, "pa=%u pb=%u pc=%u\n", pa, pb, pc);
- assert(pa<=255);
- assert(pb<=255);
- assert(pc<=255*2);
- /* return nearest of a,b,c, breaking ties in order a,b,c. */
- return (pa <= pb && pa <= pc) ? a
- : pb <= pc ? b
- : c;
-}
-
-PNGPredictorPaeth::PNGPredictorPaeth(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_)
- : h(0), g(0), out(out_) {
- param_assert(cpp_*bpc_<=32);
- rlen=(columns_*cpp_*bpc_+7)>>3;
- op=obuf=1+new unsigned char[2*rlen+2];
- oq=obuf+rlen+1; /* prev scanline */
- memset(obuf+rlen, '\0', rlen+1);
- obuf[-1]='\4'; /* Scanline (row) header: describes predictor used */
- bpccpp=((cpp_*bpc_+7)&~7)-8;
-}
-
-void PNGPredictorPaeth::vi_write(char const*buf, slen_t len) {
- unsigned char const *p=(unsigned char const*)buf, *pend0=p+len;
- slen_t opleft=rlen-(op-obuf);
- register unsigned int i;
- if (len==0) {
- assert(opleft==rlen); /* unflushed (half-ready) row disallowed */
- assert(obuf!=NULLP);
- delete [] (obuf-1);
- obuf=(unsigned char*)NULLP;
- out.vi_write(0,0);
- return;
- }
- while (p!=pend0) {
- // assert(0==obuf[rlen] && 4==obuf[-1]);
- i=*p; *op++=i-paeth_predictor((h>>bpccpp)&255, *oq, (g>>bpccpp)&255);
- h=(h<<8)|i; g=(g<<8)|*oq; *oq++=*p++;
- // i=*p; *op++=i-h; h=i; *oq++=*p++;
- if (--opleft==0) {
- out.vi_write((char*)obuf-1,rlen+1); opleft=rlen;
- op=obuf; oq=obuf+rlen+1; h=0; g=0;
- }
- }
-}
-
-/* --- */
-
-PNGPredictorAuto::PNGPredictorAuto(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_)
- : h(0), g(0), out(out_) {
- param_assert(cpp_*bpc_<=32);
- opleft=rlen=(columns_*cpp_*bpc_+7)>>3;
- obuf=new unsigned char[6*rlen+6];
- o_prior=obuf+rlen+1; /* Prior(x): ooprior[-opleft] */
- obuf[rlen*1+1]='\0'; o_0=obuf+2*rlen+2;
- obuf[rlen*2+2]='\1'; o_1=obuf+3*rlen+3;
- obuf[rlen*3+3]='\2'; o_2=obuf+4*rlen+4;
- obuf[rlen*4+4]='\3'; o_3=obuf+5*rlen+5;
- obuf[rlen*5+5]='\4'; o_4=obuf+6*rlen+6;
- oo[0]=o_0; oo[1]=o_1; oo[2]=o_2; oo[3]=o_3; oo[4]=o_4;
- memset(obuf, '\0', rlen+1);
- bpccpp=((cpp_*bpc_+7)&~7)-8;
-}
-
-void PNGPredictorAuto::vi_write(char const*buf, slen_t len) {
- unsigned char const *p=(unsigned char const*)buf, *pend0=p+len;
- register unsigned int i;
- register unsigned raw_x_bpp, prior_x, prior_x_bpp;
- if (len==0) {
- assert(opleft==rlen); /* unflushed (half-ready) row disallowed */
- assert(obuf!=NULLP);
- delete [] obuf;
- obuf=(unsigned char*)NULLP;
- out.vi_write(0,0);
- return;
- }
- while (p!=pend0) {
- raw_x_bpp=(h>>bpccpp) &255;
- prior_x=*(o_prior-opleft);
- prior_x_bpp=(g>>bpccpp) &255;
- i=*p;
- *(o_0-opleft)=i;
- *(o_1-opleft)=i-raw_x_bpp;
- *(o_2-opleft)=i-prior_x;
- *(o_3-opleft)=i-((raw_x_bpp+prior_x)>>1);
- *(o_4-opleft)=i-paeth_predictor(raw_x_bpp, prior_x, prior_x_bpp);
- h=(h<<8)|i; g=(g<<8)|*(o_prior-opleft); *(o_prior-opleft)=*p++;
- if (--opleft==0) {
- /* Select the predictor having the smallest signed sum of values. */
- slendiff_t min_weight, cur_weight;
- unsigned min_pred=0, cur_pred;
- register signed char *beg, *end;
- min_weight=0; beg=(end=(signed char*)o_0)-rlen; while (beg!=end) min_weight+=*beg++;
- if (min_weight<0) min_weight*=-1;
- for (cur_pred=1; cur_pred<=4; cur_pred++) {
- cur_weight=0; beg=(end=(signed char*)oo[cur_pred])-rlen; while (beg!=end) cur_weight+=*beg++;
- if (cur_weight<0) cur_weight*=-1;
- if (cur_weight<min_weight) { min_weight=cur_weight; min_pred=cur_pred; }
- }
- // fprintf(stderr, "cp=%u\n", min_pred);
-
- out.vi_write((char*)(oo[min_pred]-rlen-1),rlen+1);
- opleft=rlen; h=0; g=0;
- }
- }
-}
-
-/* --- */
-
-PNGPredictorAutoUnsigned::PNGPredictorAutoUnsigned(GenBuffer::Writable &out_, unsigned char bpc_, slen_t columns_, unsigned char cpp_)
- : h(0), g(0), out(out_) {
- param_assert(cpp_*bpc_<=32);
- opleft=rlen=(columns_*cpp_*bpc_+7)>>3;
- obuf=new unsigned char[6*rlen+6];
- o_prior=obuf+rlen+1; /* Prior(x): ooprior[-opleft] */
- obuf[rlen*1+1]='\0'; o_0=obuf+2*rlen+2;
- obuf[rlen*2+2]='\1'; o_1=obuf+3*rlen+3;
- obuf[rlen*3+3]='\2'; o_2=obuf+4*rlen+4;
- obuf[rlen*4+4]='\3'; o_3=obuf+5*rlen+5;
- obuf[rlen*5+5]='\4'; o_4=obuf+6*rlen+6;
- oo[0]=o_0; oo[1]=o_1; oo[2]=o_2; oo[3]=o_3; oo[4]=o_4;
- memset(obuf, '\0', rlen+1);
- bpccpp=((cpp_*bpc_+7)&~7)-8;
-}
-
-void PNGPredictorAutoUnsigned::vi_write(char const*buf, slen_t len) {
- unsigned char const *p=(unsigned char const*)buf, *pend0=p+len;
- register unsigned int i;
- register unsigned raw_x_bpp, prior_x, prior_x_bpp;
- // unsigned lines=0;
- if (len==0) {
- assert(opleft==rlen); /* unflushed (half-ready) row disallowed */
- assert(obuf!=NULLP);
- delete [] obuf;
- obuf=(unsigned char*)NULLP;
- out.vi_write(0,0);
- return;
- }
- // fprintf(stderr, "rlen=%u len=%u opleft=%u\n", rlen, len, opleft);
- while (p!=pend0) {
- raw_x_bpp=(h>>bpccpp) &255;
- prior_x=*(o_prior-opleft);
- prior_x_bpp=(g>>bpccpp) &255;
- i=*p;
- *(o_0-opleft)=i;
- *(o_1-opleft)=i-raw_x_bpp;
- *(o_2-opleft)=i-prior_x;
- *(o_3-opleft)=i-((raw_x_bpp+prior_x)>>1);
- *(o_4-opleft)=i-paeth_predictor(raw_x_bpp, prior_x, prior_x_bpp);
- h=(h<<8)|i; g=(g<<8)|*(o_prior-opleft); *(o_prior-opleft)=*p++;
- if (--opleft==0) {
- /* Select the predictor having the smallest unsigned sum of values. */
- slen_t min_weight, cur_weight;
- unsigned min_pred=0, cur_pred;
- register unsigned char *beg, *end;
- min_weight=0; beg=(end=(unsigned char*)o_0)-rlen; while (beg!=end) min_weight+=*beg++;
- for (cur_pred=1; cur_pred<=4; cur_pred++) {
- cur_weight=0; beg=(end=(unsigned char*)oo[cur_pred])-rlen; while (beg!=end) cur_weight+=*beg++;
- if (cur_weight<min_weight) { min_weight=cur_weight; min_pred=cur_pred; }
- }
- // fprintf(stderr, "cp=%u\n", min_pred);
-
- out.vi_write((char*)(oo[min_pred]-rlen-1),rlen+1);
- opleft=rlen; h=0; g=0;
- // lines++;
- }
- }
- // fprintf(stderr, "oen=%u opleft=%u lines=%u\n", len, opleft, lines);
-}
-
-/* --- */
-
-Encoder* PSEncoder::newPredictor(GenBuffer::Writable &out_, unsigned char type, unsigned char bpc_, slen_t columns_, unsigned char cpp_) {
- switch ((unsigned)type) {
- /* Imp: make these faster with `register int' etc. tricks */
- case 1: return new Filter::VerbatimE(out_);
- case 2: return new TIFFPredictor2(out_, bpc_, columns_, cpp_);
- case 10: return new PNGPredictorNone(out_, bpc_, columns_, cpp_);
- case 11: return new PNGPredictorSub(out_, bpc_, columns_, cpp_);
- case 12: return new PNGPredictorUp(out_, bpc_, columns_, cpp_);
- case 13: return new PNGPredictorAverage(out_, bpc_, columns_, cpp_);
- case 14: return new PNGPredictorPaeth(out_, bpc_, columns_, cpp_);
- case 15: return new PNGPredictorAuto(out_, bpc_, columns_, cpp_);
- case 45: return new PNGPredictorAutoUnsigned(out_, bpc_, columns_, cpp_); /* pts' extension */
- }
- // fprintf(stderr, "pred=%d\n", type);
- param_assert(0 && "invalid predictor requested");
- return (Encoder*)0; /*notreached*/
-}
-
-/* __END__ */