Commit message: Initialize refLine totally

Fixes uninitialized memory read in 1004.pdf.asan.7.3
CVE: CVE-2013-1790
CWE: CWE-119
Vulnerability description: poppler/Stream.cc in poppler before 0.22.1 allows context-dependent attackers to have an unspecified impact via vectors that trigger a read of uninitialized memory by the CCITTFaxStream::lookChar function.

Project: poppler
File: Stream.cc

ASCII85Stream::ASCII85Stream(Stream *strA):
    FilterStream(strA) {
  index = n = 0;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

ASCIIHexEncoder::ASCIIHexEncoder(Stream *strA):
    FilterStream(strA) {
  bufPtr = bufEnd = buf;
  lineLen = 0;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

BaseStream::BaseStream(Object *dictA, Guint lengthA) {
  dict = *dictA;
  length = lengthA;
}

Project: poppler
File: Stream.cc

BufStream::BufStream(Stream *strA, int bufSizeA): FilterStream(strA) {
  bufSize = bufSizeA;
  buf = (int *)gmallocn(bufSize, sizeof(int));
}

Project: poppler

CCITTFaxStream::CCITTFaxStream(Stream *strA, int encodingA, GBool endOfLineA,
			       GBool byteAlignA, int columnsA, int rowsA,
			       GBool endOfBlockA, GBool blackA):
    FilterStream(strA) {
  encoding = encodingA;
  endOfLine = endOfLineA;
  byteAlign = byteAlignA;
  columns = columnsA;
  if (columns < 1) {
    columns = 1;
  } else if (columns > INT_MAX - 2) {
    columns = INT_MAX - 2;
  }
  rows = rowsA;
  endOfBlock = endOfBlockA;
  black = blackA;
  codingLine = (int *)gmallocn_checkoverflow(columns + 1, sizeof(int));
  refLine = (int *)gmallocn_checkoverflow(columns + 2, sizeof(int));

  if (codingLine != NULL && refLine != NULL) {
    eof = gFalse;
    codingLine[0] = columns;
  } else {
    eof = gTrue;
  }
  row = 0;
  nextLine2D = encoding < 0;
  inputBits = 0;
  a0i = 0;
  outputBits = 0;

  buf = EOF;
}

Project: poppler
File: Stream.cc

CMYKGrayEncoder::CMYKGrayEncoder(Stream *strA):
    FilterStream(strA) {
  bufPtr = bufEnd = buf;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

CachedFileStream::CachedFileStream(CachedFile *ccA, Guint startA,
        GBool limitedA, Guint lengthA, Object *dictA)
  : BaseStream(dictA, lengthA)
{
  cc = ccA;
  start = startA;
  limited = limitedA;
  length = lengthA;
  bufPtr = bufEnd = buf;
  bufPos = start;
  savePos = 0;
  saved = gFalse;
}

Project: poppler
File: Stream.cc

DCTStream::DCTStream(Stream *strA, int colorXformA):
    FilterStream(strA) {
  int i, j;

  colorXform = colorXformA;
  progressive = interleaved = gFalse;
  width = height = 0;
  mcuWidth = mcuHeight = 0;
  numComps = 0;
  comp = 0;
  x = y = dy = 0;
  for (i = 0; i < 4; ++i) {
    for (j = 0; j < 32; ++j) {
      rowBuf[i][j] = NULL;
    }
    frameBuf[i] = NULL;
  }

  if (!dctClipInit) {
    for (i = -256; i < 0; ++i)
      dctClip[dctClipOffset + i] = 0;
    for (i = 0; i < 256; ++i)
      dctClip[dctClipOffset + i] = i;
    for (i = 256; i < 512; ++i)
      dctClip[dctClipOffset + i] = 255;
    dctClipInit = 1;
  }
}

Project: poppler
File: Stream.cc

EOFStream::EOFStream(Stream *strA):
    FilterStream(strA) {
}

Project: poppler
File: Stream.cc

EmbedStream::EmbedStream(Stream *strA, Object *dictA,
			 GBool limitedA, Guint lengthA):
    BaseStream(dictA, lengthA) {
  str = strA;
  limited = limitedA;
  length = lengthA;
}

Project: poppler
File: Stream.cc

FileOutStream::FileOutStream (FILE* fa, Guint startA)
{
  f = fa;
  start = startA;
}

Project: poppler
File: Stream.cc

FileStream::FileStream(FILE *fA, Guint startA, GBool limitedA,
		       Guint lengthA, Object *dictA):
    BaseStream(dictA, lengthA) {
  f = fA;
  start = startA;
  limited = limitedA;
  length = lengthA;
  bufPtr = bufEnd = buf;
  bufPos = start;
  savePos = 0;
  saved = gFalse;
}

Project: poppler
File: Stream.cc

FixedLengthEncoder::FixedLengthEncoder(Stream *strA, int lengthA):
    FilterStream(strA) {
  length = lengthA;
  count = 0;
}

Project: poppler
File: Stream.cc

FlateStream::FlateStream(Stream *strA, int predictor, int columns,
			 int colors, int bits):
    FilterStream(strA) {
  if (predictor != 1) {
    pred = new StreamPredictor(this, predictor, columns, colors, bits);
    if (!pred->isOk()) {
      delete pred;
      pred = NULL;
    }
  } else {
    pred = NULL;
  }
  litCodeTab.codes = NULL;
  distCodeTab.codes = NULL;
  memset(buf, 0, flateWindow);
}

Project: poppler

ImageStream::ImageStream(Stream *strA, int widthA, int nCompsA, int nBitsA) {
  int imgLineSize;

  str = strA;
  width = widthA;
  nComps = nCompsA;
  nBits = nBitsA;

  nVals = width * nComps;
  inputLineSize = (nVals * nBits + 7) >> 3;
  if (nBits <= 0 || nVals > INT_MAX / nBits - 7) {
    inputLineSize = -1;
  }
  inputLine = (Guchar *)gmallocn_checkoverflow(inputLineSize, sizeof(char));
  if (nBits == 8) {
    imgLine = (Guchar *)inputLine;
  } else {
    if (nBits == 1) {
      imgLineSize = (nVals + 7) & ~7;
    } else {
      imgLineSize = nVals;
    }
    if (width > INT_MAX / nComps) {
      imgLineSize = -1;
    }
    imgLine = (Guchar *)gmallocn(imgLineSize, sizeof(Guchar));
  }
  imgIdx = nVals;
}

Project: poppler
File: Stream.cc

LZWStream::LZWStream(Stream *strA, int predictor, int columns, int colors,
		     int bits, int earlyA):
    FilterStream(strA) {
  if (predictor != 1) {
    pred = new StreamPredictor(this, predictor, columns, colors, bits);
    if (!pred->isOk()) {
      delete pred;
      pred = NULL;
    }
  } else {
    pred = NULL;
  }
  early = earlyA;
  eof = gFalse;
  inputBits = 0;
  clearTable();
}

Project: poppler
File: Stream.cc

MemStream::MemStream(char *bufA, Guint startA, Guint lengthA, Object *dictA):
    BaseStream(dictA, lengthA) {
  buf = bufA;
  start = startA;
  length = lengthA;
  bufEnd = buf + start + length;
  bufPtr = buf + start;
  needFree = gFalse;
}

Project: poppler
File: Stream.cc

RGBGrayEncoder::RGBGrayEncoder(Stream *strA):
    FilterStream(strA) {
  bufPtr = bufEnd = buf;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

RunLengthEncoder::RunLengthEncoder(Stream *strA):
    FilterStream(strA) {
  bufPtr = bufEnd = nextEnd = buf;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

Stream::Stream() {
  ref = 1;
}

Project: poppler
File: Stream.cc

StreamPredictor::StreamPredictor(Stream *strA, int predictorA,
				 int widthA, int nCompsA, int nBitsA) {
  str = strA;
  predictor = predictorA;
  width = widthA;
  nComps = nCompsA;
  nBits = nBitsA;
  predLine = NULL;
  ok = gFalse;

  nVals = width * nComps;
  pixBytes = (nComps * nBits + 7) >> 3;
  rowBytes = ((nVals * nBits + 7) >> 3) + pixBytes;
  if (width <= 0 || nComps <= 0 || nBits <= 0 ||
      nComps > gfxColorMaxComps ||
      nBits > 16 ||
      width >= INT_MAX / nComps ||      // check for overflow in nVals
      nVals >= (INT_MAX - 7) / nBits) { // check for overflow in rowBytes
    return;
  }
  predLine = (Guchar *)gmalloc(rowBytes);
  memset(predLine, 0, rowBytes);
  predIdx = rowBytes;

  ok = gTrue;
}

Project: poppler
File: Stream.cc

Stream *Stream::addFilters(Object *dict) {
  Object obj, obj2;
  Object params, params2;
  Stream *str;
  int i;

  str = this;
  dict->dictLookup("Filter", &obj);
  if (obj.isNull()) {
    obj.free();
    dict->dictLookup("F", &obj);
  }
  dict->dictLookup("DecodeParms", &params);
  if (params.isNull()) {
    params.free();
    dict->dictLookup("DP", &params);
  }
  if (obj.isName()) {
    str = makeFilter(obj.getName(), str, &params);
  } else if (obj.isArray()) {
    for (i = 0; i < obj.arrayGetLength(); ++i) {
      obj.arrayGet(i, &obj2);
      if (params.isArray())
	params.arrayGet(i, &params2);
      else
	params2.initNull();
      if (obj2.isName()) {
	str = makeFilter(obj2.getName(), str, &params2);
      } else {
	error(errSyntaxError, getPos(), "Bad filter name");
	str = new EOFStream(str);
      }
      obj2.free();
      params2.free();
    }
  } else if (!obj.isNull()) {
    error(errSyntaxError, getPos(), "Bad 'Filter' attribute in stream");
  }
  obj.free();
  params.free();

  return str;
}

Project: poppler
File: Stream.cc

inline void CCITTFaxStream::addPixels(int a1, int blackPixels) {
  if (a1 > codingLine[a0i]) {
    if (a1 > columns) {
      error(errSyntaxError, getPos(),
	    "CCITTFax row is wrong length ({0:d})", a1);
      err = gTrue;
      a1 = columns;
    }
    if ((a0i & 1) ^ blackPixels) {
      ++a0i;
    }
    codingLine[a0i] = a1;
  }
}

Project: poppler
File: Stream.cc

inline void CCITTFaxStream::addPixelsNeg(int a1, int blackPixels) {
  if (a1 > codingLine[a0i]) {
    if (a1 > columns) {
      error(errSyntaxError, getPos(),
	    "CCITTFax row is wrong length ({0:d})", a1);
      err = gTrue;
      a1 = columns;
    }
    if ((a0i & 1) ^ blackPixels) {
      ++a0i;
    }
    codingLine[a0i] = a1;
  } else if (a1 < codingLine[a0i]) {
    if (a1 < 0) {
      error(errSyntaxError, getPos(), "Invalid CCITTFax code");
      err = gTrue;
      a1 = 0;
    }
    while (a0i > 0 && a1 <= codingLine[a0i - 1]) {
      --a0i;
    }
    codingLine[a0i] = a1;
  }
}

Project: poppler
File: Stream.cc

void CCITTFaxStream::ccittReset(GBool unfiltered) {
  if (unfiltered)
    str->unfilteredReset();
  else
    str->reset();

  row = 0;
  nextLine2D = encoding < 0;
  inputBits = 0;
  a0i = 0;
  outputBits = 0;
  buf = EOF;
}

Project: poppler
File: Stream.cc

void LZWStream::clearTable() {
  nextCode = 258;
  nextBits = 9;
  seqIndex = seqLength = 0;
  first = gTrue;
}

Project: poppler
File: Stream.cc

void Stream::close() {
}

Project: poppler
File: Stream.cc

void FileOutStream::close ()
{

}

Project: poppler
File: Stream.cc

void FilterStream::close() {
  str->close();
}

Project: poppler
File: Stream.cc

void ImageStream::close() {
  str->close();
}

Project: poppler
File: Stream.cc

void FileStream::close() {
  if (saved) {
#if HAVE_FSEEKO
    fseeko(f, savePos, SEEK_SET);
#elif HAVE_FSEEK64
    fseek64(f, savePos, SEEK_SET);
#else
    fseek(f, savePos, SEEK_SET);
#endif
    saved = gFalse;
  }
}

Project: poppler
File: Stream.cc

void CachedFileStream::close()
{
  if (saved) {
    cc->seek(savePos, SEEK_SET);
    saved = gFalse;
  }
}

Project: poppler
File: Stream.cc

void MemStream::close() {
}

Project: poppler
File: Stream.cc

void DCTStream::close() {
  int i, j;

  for (i = 0; i < 4; ++i) {
    for (j = 0; j < 32; ++j) {
      gfree(rowBuf[i][j]);
      rowBuf[i][j] = NULL;
    }
    gfree(frameBuf[i]);
    frameBuf[i] = NULL;
  }
  FilterStream::close();
}

Project: poppler
File: Stream.cc

void DCTStream::dctReset(GBool unfiltered) {
  if (unfiltered)
    str->unfilteredReset();
  else
    str->reset();

  progressive = interleaved = gFalse;
  width = height = 0;
  numComps = 0;
  numQuantTables = 0;
  numDCHuffTables = 0;
  numACHuffTables = 0;
  gotJFIFMarker = gFalse;
  gotAdobeMarker = gFalse;
  restartInterval = 0;
}

Project: poppler

void DCTStream::decodeImage() {
  int dataIn[64];
  Guchar dataOut[64];
  Gushort *quantTable;
  int pY, pCb, pCr, pR, pG, pB;
  int x1, y1, x2, y2, x3, y3, x4, y4, x5, y5, cc, i;
  int h, v, horiz, vert, hSub, vSub;
  int *p0, *p1, *p2;

  for (y1 = 0; y1 < bufHeight; y1 += mcuHeight) {
    for (x1 = 0; x1 < bufWidth; x1 += mcuWidth) {
      for (cc = 0; cc < numComps; ++cc) {
	quantTable = quantTables[compInfo[cc].quantTable];
	h = compInfo[cc].hSample;
	v = compInfo[cc].vSample;
	horiz = mcuWidth / h;
	vert = mcuHeight / v;
	hSub = horiz / 8;
	vSub = vert / 8;
	for (y2 = 0; y2 < mcuHeight; y2 += vert) {
	  for (x2 = 0; x2 < mcuWidth; x2 += horiz) {

	    p1 = &frameBuf[cc][(y1+y2) * bufWidth + (x1+x2)];
	    for (y3 = 0, i = 0; y3 < 8; ++y3, i += 8) {
	      dataIn[i]   = p1[0];
	      dataIn[i+1] = p1[1];
	      dataIn[i+2] = p1[2];
	      dataIn[i+3] = p1[3];
	      dataIn[i+4] = p1[4];
	      dataIn[i+5] = p1[5];
	      dataIn[i+6] = p1[6];
	      dataIn[i+7] = p1[7];
	      p1 += bufWidth * vSub;
	    }

	    transformDataUnit(quantTable, dataIn, dataOut);

	    p1 = &frameBuf[cc][(y1+y2) * bufWidth + (x1+x2)];
	    if (hSub == 1 && vSub == 1) {
	      for (y3 = 0, i = 0; y3 < 8; ++y3, i += 8) {
		p1[0] = dataOut[i] & 0xff;
		p1[1] = dataOut[i+1] & 0xff;
		p1[2] = dataOut[i+2] & 0xff;
		p1[3] = dataOut[i+3] & 0xff;
		p1[4] = dataOut[i+4] & 0xff;
		p1[5] = dataOut[i+5] & 0xff;
		p1[6] = dataOut[i+6] & 0xff;
		p1[7] = dataOut[i+7] & 0xff;
		p1 += bufWidth;
	      }
	    } else if (hSub == 2 && vSub == 2) {
	      p2 = p1 + bufWidth;
	      for (y3 = 0, i = 0; y3 < 16; y3 += 2, i += 8) {
		p1[0] = p1[1] = p2[0] = p2[1] = dataOut[i] & 0xff;
		p1[2] = p1[3] = p2[2] = p2[3] = dataOut[i+1] & 0xff;
		p1[4] = p1[5] = p2[4] = p2[5] = dataOut[i+2] & 0xff;
		p1[6] = p1[7] = p2[6] = p2[7] = dataOut[i+3] & 0xff;
		p1[8] = p1[9] = p2[8] = p2[9] = dataOut[i+4] & 0xff;
		p1[10] = p1[11] = p2[10] = p2[11] = dataOut[i+5] & 0xff;
		p1[12] = p1[13] = p2[12] = p2[13] = dataOut[i+6] & 0xff;
		p1[14] = p1[15] = p2[14] = p2[15] = dataOut[i+7] & 0xff;
		p1 += bufWidth * 2;
		p2 += bufWidth * 2;
	      }
	    } else {
	      i = 0;
	      for (y3 = 0, y4 = 0; y3 < 8; ++y3, y4 += vSub) {
		for (x3 = 0, x4 = 0; x3 < 8; ++x3, x4 += hSub) {
		  p2 = p1 + x4;
		  for (y5 = 0; y5 < vSub; ++y5) {
		    for (x5 = 0; x5 < hSub; ++x5) {
		      p2[x5] = dataOut[i] & 0xff;
		    }
		    p2 += bufWidth;
		  }
		  ++i;
		}
		p1 += bufWidth * vSub;
	      }
	    }
	  }
	}
      }

      if (colorXform) {
	if (numComps == 3) {
	  for (y2 = 0; y2 < mcuHeight; ++y2) {
	    p0 = &frameBuf[0][(y1+y2) * bufWidth + x1];
	    p1 = &frameBuf[1][(y1+y2) * bufWidth + x1];
	    p2 = &frameBuf[2][(y1+y2) * bufWidth + x1];
	    for (x2 = 0; x2 < mcuWidth; ++x2) {
	      pY = *p0;
	      pCb = *p1 - 128;
	      pCr = *p2 - 128;
	      pR = ((pY << 16) + dctCrToR * pCr + 32768) >> 16;
	      *p0++ = dctClip[dctClipOffset + pR];
	      pG = ((pY << 16) + dctCbToG * pCb + dctCrToG * pCr +
		    32768) >> 16;
	      *p1++ = dctClip[dctClipOffset + pG];
	      pB = ((pY << 16) + dctCbToB * pCb + 32768) >> 16;
	      *p2++ = dctClip[dctClipOffset + pB];
	    }
	  }
	} else if (numComps == 4) {
	  for (y2 = 0; y2 < mcuHeight; ++y2) {
	    p0 = &frameBuf[0][(y1+y2) * bufWidth + x1];
	    p1 = &frameBuf[1][(y1+y2) * bufWidth + x1];
	    p2 = &frameBuf[2][(y1+y2) * bufWidth + x1];
	    for (x2 = 0; x2 < mcuWidth; ++x2) {
	      pY = *p0;
	      pCb = *p1 - 128;
	      pCr = *p2 - 128;
	      pR = ((pY << 16) + dctCrToR * pCr + 32768) >> 16;
	      *p0++ = 255 - dctClip[dctClipOffset + pR];
	      pG = ((pY << 16) + dctCbToG * pCb + dctCrToG * pCr +
		    32768) >> 16;
	      *p1++ = 255 - dctClip[dctClipOffset + pG];
	      pB = ((pY << 16) + dctCbToB * pCb + 32768) >> 16;
	      *p2++ = 255 - dctClip[dctClipOffset + pB];
	    }
	  }
	}
      }
    }
  }
}

Project: poppler
File: Stream.cc

GBool FileStream::fillBuf() {
  int n;

  bufPos += bufEnd - buf;
  bufPtr = bufEnd = buf;
  if (limited && bufPos >= start + length) {
    return gFalse;
  }
  if (limited && bufPos + fileStreamBufSize > start + length) {
    n = start + length - bufPos;
  } else {
    n = fileStreamBufSize;
  }
  n = fread(buf, 1, n, f);
  bufEnd = buf + n;
  if (bufPtr >= bufEnd) {
    return gFalse;
  }
  return gTrue;
}

Project: poppler
File: Stream.cc

GBool CachedFileStream::fillBuf()
{
  int n;

  bufPos += bufEnd - buf;
  bufPtr = bufEnd = buf;
  if (limited && bufPos >= start + length) {
    return gFalse;
  }
  if (limited && bufPos + cachedStreamBufSize > start + length) {
    n = start + length - bufPos;
  } else {
    n = cachedStreamBufSize - (bufPos % cachedStreamBufSize);
  }
  cc->read(buf, 1, n);
  bufEnd = buf + n;
  if (bufPtr >= bufEnd) {
    return gFalse;
  }
  return gTrue;
}

Project: poppler
File: Stream.cc

GBool RunLengthStream::fillBuf() {
  int c;
  int n, i;

  if (eof)
    return gFalse;
  c = str->getChar();
  if (c == 0x80 || c == EOF) {
    eof = gTrue;
    return gFalse;
  }
  if (c < 0x80) {
    n = c + 1;
    for (i = 0; i < n; ++i)
      buf[i] = (char)str->getChar();
  } else {
    n = 0x101 - c;
    c = str->getChar();
    for (i = 0; i < n; ++i)
      buf[i] = (char)c;
  }
  bufPtr = buf;
  bufEnd = buf + n;
  return gTrue;
}

Project: poppler
File: Stream.cc

GBool ASCIIHexEncoder::fillBuf() {
  static const char *hex = "0123456789abcdef";
  int c;

  if (eof) {
    return gFalse;
  }
  bufPtr = bufEnd = buf;
  if ((c = str->getChar()) == EOF) {
    *bufEnd++ = '>';
    eof = gTrue;
  } else {
    if (lineLen >= 64) {
      *bufEnd++ = '\n';
      lineLen = 0;
    }
    *bufEnd++ = hex[(c >> 4) & 0x0f];
    *bufEnd++ = hex[c & 0x0f];
    lineLen += 2;
  }
  return gTrue;
}

Project: poppler
File: Stream.cc

GBool ASCII85Encoder::fillBuf() {
  Guint t;
  char buf1[5];
  int c0, c1, c2, c3;
  int n, i;

  if (eof) {
    return gFalse;
  }
  c0 = str->getChar();
  c1 = str->getChar();
  c2 = str->getChar();
  c3 = str->getChar();
  bufPtr = bufEnd = buf;
  if (c3 == EOF) {
    if (c0 == EOF) {
      n = 0;
      t = 0;
    } else {
      if (c1 == EOF) {
	n = 1;
	t = c0 << 24;
      } else if (c2 == EOF) {
	n = 2;
	t = (c0 << 24) | (c1 << 16);
      } else {
	n = 3;
	t = (c0 << 24) | (c1 << 16) | (c2 << 8);
      }
      for (i = 4; i >= 0; --i) {
	buf1[i] = (char)(t % 85 + 0x21);
	t /= 85;
      }
      for (i = 0; i <= n; ++i) {
	*bufEnd++ = buf1[i];
	if (++lineLen == 65) {
	  *bufEnd++ = '\n';
	  lineLen = 0;
	}
      }
    }
    *bufEnd++ = '~';
    *bufEnd++ = '>';
    eof = gTrue;
  } else {
    t = (c0 << 24) | (c1 << 16) | (c2 << 8) | c3;
    if (t == 0) {
      *bufEnd++ = 'z';
      if (++lineLen == 65) {
	*bufEnd++ = '\n';
	lineLen = 0;
      }
    } else {
      for (i = 4; i >= 0; --i) {
	buf1[i] = (char)(t % 85 + 0x21);
	t /= 85;
      }
      for (i = 0; i <= 4; ++i) {
	*bufEnd++ = buf1[i];
	if (++lineLen == 65) {
	  *bufEnd++ = '\n';
	  lineLen = 0;
	}
      }
    }
  }
  return gTrue;
}

Project: poppler

GBool RunLengthEncoder::fillBuf() {
  int c, c1, c2;
  int n;

  if (eof)
    return gFalse;

  if (nextEnd < bufEnd + 1) {
    if ((c1 = str->getChar()) == EOF) {
      eof = gTrue;
      return gFalse;
    }
  } else {
    c1 = bufEnd[0] & 0xff;
  }
  if (nextEnd < bufEnd + 2) {
    if ((c2 = str->getChar()) == EOF) {
      eof = gTrue;
      buf[0] = 0;
      buf[1] = c1;
      bufPtr = buf;
      bufEnd = &buf[2];
      return gTrue;
    }
  } else {
    c2 = bufEnd[1] & 0xff;
  }

  c = 0; // make gcc happy
  if (c1 == c2) {
    n = 2;
    while (n < 128 && (c = str->getChar()) == c1)
      ++n;
    buf[0] = (char)(257 - n);
    buf[1] = c1;
    bufEnd = &buf[2];
    if (c == EOF) {
      eof = gTrue;
    } else if (n < 128) {
      buf[2] = c;
      nextEnd = &buf[3];
    } else {
      nextEnd = bufEnd;
    }

  } else {
    buf[1] = c1;
    buf[2] = c2;
    n = 2;
    while (n < 128) {
      if ((c = str->getChar()) == EOF) {
	eof = gTrue;
	break;
      }
      ++n;
      buf[n] = c;
      if (buf[n] == buf[n-1])
	break;
    }
    if (buf[n] == buf[n-1]) {
      buf[0] = (char)(n-2-1);
      bufEnd = &buf[n-1];
      nextEnd = &buf[n+1];
    } else {
      buf[0] = (char)(n-1);
      bufEnd = nextEnd = &buf[n+1];
    }
  }
  bufPtr = buf;
  return gTrue;
}

Project: poppler
File: Stream.cc

GBool CMYKGrayEncoder::fillBuf() {
  int c0, c1, c2, c3;
  int i;

  if (eof) {
    return gFalse;
  }
  c0 = str->getChar();
  c1 = str->getChar();
  c2 = str->getChar();
  c3 = str->getChar();
  if (c3 == EOF) {
    eof = gTrue;
    return gFalse;
  }
  i = (3 * c0 + 6 * c1 + c2) / 10 + c3;
  if (i > 255) i = 255;
  bufPtr = bufEnd = buf;
  *bufEnd++ = (char) i;
  return gTrue;
}

Project: poppler
File: Stream.cc

GBool RGBGrayEncoder::fillBuf() {
  int c0, c1, c2;
  int i;

  if (eof) {
    return gFalse;
  }
  c0 = str->getChar();
  c1 = str->getChar();
  c2 = str->getChar();
  if (c2 == EOF) {
    eof = gTrue;
    return gFalse;
  }
  i = 255 - (3 * c0 + 6 * c1 + c2) / 10;
  if (i < 0) i = 0;
  bufPtr = bufEnd = buf;
  *bufEnd++ = (char) i;
  return gTrue;
}

Project: poppler
File: Stream.cc

void FlateStream::flateReset(GBool unfiltered) {
  if (unfiltered)
    str->unfilteredReset();
  else
    str->reset();

  index = 0;
  remain = 0;
  codeBuf = 0;
  codeSize = 0;
  compressedBlock = gFalse;
  endOfBlock = gTrue;
  eof = gTrue;
}

Project: poppler

short CCITTFaxStream::getBlackCode() {
  short code;
  const CCITTCode *p;
  int n;

  code = 0; // make gcc happy
  if (endOfBlock) {
    code = lookBits(13);
    if (code == EOF) {
      return 1;
    }
    if ((code >> 7) == 0) {
      p = &blackTab1[code];
    } else if ((code >> 9) == 0 && (code >> 7) != 0) {
      p = &blackTab2[(code >> 1) - 64];
    } else {
      p = &blackTab3[code >> 7];
    }
    if (p->bits > 0) {
      eatBits(p->bits);
      return p->n;
    }
  } else {
    for (n = 2; n <= 6; ++n) {
      code = lookBits(n);
      if (code == EOF) {
	return 1;
      }
      if (n < 6) {
	code <<= 6 - n;
      }
      p = &blackTab3[code];
      if (p->bits == n) {
	eatBits(n);
	return p->n;
      }
    }
    for (n = 7; n <= 12; ++n) {
      code = lookBits(n);
      if (code == EOF) {
	return 1;
      }
      if (n < 12) {
	code <<= 12 - n;
      }
      if (code >= 64) {
	p = &blackTab2[code - 64];
	if (p->bits == n) {
	  eatBits(n);
	  return p->n;
	}
      }
    }
    for (n = 10; n <= 13; ++n) {
      code = lookBits(n);
      if (code == EOF) {
	return 1;
      }
      if (n < 13) {
	code <<= 13 - n;
      }
      p = &blackTab1[code];
      if (p->bits == n) {
	eatBits(n);
	return p->n;
      }
    }
  }
  error(errSyntaxError, getPos(),
	"Bad black code ({0:04x}) in CCITTFax stream", code);
  eatBits(1);
  return 1;
}

Project: poppler
File: Stream.cc

int EmbedStream::getChar() {
  if (limited && !length) {
    return EOF;
  }
  --length;
  return str->getChar();
}

Project: poppler
File: Stream.cc

int LZWStream::getChar() {
  if (pred) {
    return pred->getChar();
  }
  if (eof) {
    return EOF;
  }
  if (seqIndex >= seqLength) {
    if (!processNextCode()) {
      return EOF;
    }
  }
  return seqBuf[seqIndex++];
}

Project: poppler
File: Stream.cc

int DCTStream::getChar() {
  int c;

  if (y >= height) {
    return EOF;
  }
  if (progressive || !interleaved) {
    c = frameBuf[comp][y * bufWidth + x];
    if (++comp == numComps) {
      comp = 0;
      if (++x == width) {
	x = 0;
	++y;
      }
    }
  } else {
    if (dy >= mcuHeight) {
      if (!readMCURow()) {
	y = height;
	return EOF;
      }
      comp = 0;
      x = 0;
      dy = 0;
    }
    c = rowBuf[comp][dy][x];
    if (++comp == numComps) {
      comp = 0;
      if (++x == width) {
	x = 0;
	++y;
	++dy;
	if (y == height) {
	  readTrailer();
	}
      }
    }
  }
  return c;
}

Project: poppler
File: Stream.cc

int FlateStream::getChar() {
  if (pred) {
    return pred->getChar();
  }
  return doGetRawChar();
}

Project: poppler
File: Stream.cc

int BufStream::getChar() {
  int c, i;

  c = buf[0];
  for (i = 1; i < bufSize; ++i) {
    buf[i-1] = buf[i];
  }
  buf[bufSize - 1] = str->getChar();
  return c;
}

Project: poppler
File: Stream.cc

int FixedLengthEncoder::getChar() {
  if (length >= 0 && count >= length)
    return EOF;
  ++count;
  return str->getChar();
}

Project: poppler
File: Stream.cc

int StreamPredictor::getChars(int nChars, Guchar *buffer) {
  int n, m;

  n = 0;
  while (n < nChars) {
    if (predIdx >= rowBytes) {
      if (!getNextLine()) {
	break;
      }
    }
    m = rowBytes - predIdx;
    if (m > nChars - n) {
      m = nChars - n;
    }
    memcpy(buffer + n, predLine + predIdx, m);
    predIdx += m;
    n += m;
  }
  return n;
}

Project: poppler
File: Stream.cc

int MemStream::getChars(int nChars, Guchar *buffer) {
  int n;

  if (nChars <= 0) {
    return 0;
  }
  if (bufEnd - bufPtr < nChars) {
    n = (int)(bufEnd - bufPtr);
  } else {
    n = nChars;
  }
  memcpy(buffer, bufPtr, n);
  bufPtr += n;
  return n;
}

Project: poppler
File: Stream.cc

int EmbedStream::getChars(int nChars, Guchar *buffer) {
  if (nChars <= 0) {
    return 0;
  }
  if (limited && length < (Guint)nChars) {
    nChars = (int)length;
  }
  return str->doGetChars(nChars, buffer);
}

Project: poppler
File: Stream.cc

int LZWStream::getChars(int nChars, Guchar *buffer) {
  int n, m;

  if (pred) {
    return pred->getChars(nChars, buffer);
  }
  if (eof) {
    return 0;
  }
  n = 0;
  while (n < nChars) {
    if (seqIndex >= seqLength) {
      if (!processNextCode()) {
	break;
      }
    }
    m = seqLength - seqIndex;
    if (m > nChars - n) {
      m = nChars - n;
    }
    memcpy(buffer + n, seqBuf + seqIndex, m);
    seqIndex += m;
    n += m;
  }
  return n;
}

Project: poppler
File: Stream.cc

int RunLengthStream::getChars(int nChars, Guchar *buffer) {
  int n, m;

  n = 0;
  while (n < nChars) {
    if (bufPtr >= bufEnd) {
      if (!fillBuf()) {
	break;
      }
    }
    m = (int)(bufEnd - bufPtr);
    if (m > nChars - n) {
      m = nChars - n;
    }
    memcpy(buffer + n, bufPtr, m);
    bufPtr += m;
    n += m;
  }
  return n;
}

Project: poppler
File: Stream.cc

int FlateStream::getChars(int nChars, Guchar *buffer) {
  if (pred) {
    return pred->getChars(nChars, buffer);
  } else {
    for (int i = 0; i < nChars; ++i) {
      const int c = doGetRawChar();
      if (likely(c != EOF)) buffer[i] = c;
      else return i;
    }
    return nChars;
  }
}

Project: poppler
File: Stream.cc

int LZWStream::getCode() {
  int c;
  int code;

  while (inputBits < nextBits) {
    if ((c = str->getChar()) == EOF)
      return EOF;
    inputBuf = (inputBuf << 8) | (c & 0xff);
    inputBits += 8;
  }
  code = (inputBuf >> (inputBits - nextBits)) & ((1 << nextBits) - 1);
  inputBits -= nextBits;
  return code;
}

Project: poppler
File: Stream.cc

int FlateStream::getHuffmanCodeWord(FlateHuffmanTab *tab) {
  FlateCode *code;
  int c;

  while (codeSize < tab->maxLen) {
    if ((c = str->getChar()) == EOF) {
      break;
    }
    codeBuf |= (c & 0xff) << codeSize;
    codeSize += 8;
  }
  code = &tab->codes[codeBuf & ((1 << tab->maxLen) - 1)];
  if (codeSize == 0 || codeSize < code->len || code->len == 0) {
    return EOF;
  }
  codeBuf >>= code->len;
  codeSize -= code->len;
  return (int)code->val;
}

Project: poppler

Guchar *ImageStream::getLine() {
  Gulong buf, bitMask;
  int bits;
  int c;
  int i;
  Guchar *p;
 
  int readChars = str->doGetChars(inputLineSize, inputLine);
  for ( ; readChars < inputLineSize; readChars++) inputLine[readChars] = EOF;
  if (nBits == 1) {
    p = inputLine;
    for (i = 0; i < nVals; i += 8) {
      c = *p++;
      imgLine[i+0] = (Guchar)((c >> 7) & 1);
      imgLine[i+1] = (Guchar)((c >> 6) & 1);
      imgLine[i+2] = (Guchar)((c >> 5) & 1);
      imgLine[i+3] = (Guchar)((c >> 4) & 1);
      imgLine[i+4] = (Guchar)((c >> 3) & 1);
      imgLine[i+5] = (Guchar)((c >> 2) & 1);
      imgLine[i+6] = (Guchar)((c >> 1) & 1);
      imgLine[i+7] = (Guchar)(c & 1);
    }
  } else if (nBits == 8) {
  } else if (nBits == 16) {
    p = inputLine;
    for (i = 0; i < nVals; ++i) {
      imgLine[i] = *p++;
      p++;
    }
  } else {
    bitMask = (1 << nBits) - 1;
    buf = 0;
    bits = 0;
    p = inputLine;
    for (i = 0; i < nVals; ++i) {
      if (bits < nBits) {
	buf = (buf << 8) | (*p++ & 0xff);
	bits += 8;
      }
      imgLine[i] = (Guchar)((buf >> (bits - nBits)) & bitMask);
      bits -= nBits;
    }
  }
  return imgLine;
}

Project: poppler

GBool StreamPredictor::getNextLine() {
  int curPred;
  Guchar upLeftBuf[gfxColorMaxComps * 2 + 1];
  int left, up, upLeft, p, pa, pb, pc;
  int c;
  Gulong inBuf, outBuf, bitMask;
  int inBits, outBits;
  int i, j, k, kk;

  if (predictor >= 10) {
    if ((curPred = str->getRawChar()) == EOF) {
      return gFalse;
    }
    curPred += 10;
  } else {
    curPred = predictor;
  }

  int *rawCharLine = new int[rowBytes - pixBytes];
  str->getRawChars(rowBytes - pixBytes, rawCharLine);
  memset(upLeftBuf, 0, pixBytes + 1);
  for (i = pixBytes; i < rowBytes; ++i) {
    for (j = pixBytes; j > 0; --j) {
      upLeftBuf[j] = upLeftBuf[j-1];
    }
    upLeftBuf[0] = predLine[i];
    if ((c = rawCharLine[i - pixBytes]) == EOF) {
      if (i > pixBytes) {
	break;
      }
      delete[] rawCharLine;
      return gFalse;
    }
    switch (curPred) {
    case 11:			// PNG sub
      predLine[i] = predLine[i - pixBytes] + (Guchar)c;
      break;
    case 12:			// PNG up
      predLine[i] = predLine[i] + (Guchar)c;
      break;
    case 13:			// PNG average
      predLine[i] = ((predLine[i - pixBytes] + predLine[i]) >> 1) +
	            (Guchar)c;
      break;
    case 14:			// PNG Paeth
      left = predLine[i - pixBytes];
      up = predLine[i];
      upLeft = upLeftBuf[pixBytes];
      p = left + up - upLeft;
      if ((pa = p - left) < 0)
	pa = -pa;
      if ((pb = p - up) < 0)
	pb = -pb;
      if ((pc = p - upLeft) < 0)
	pc = -pc;
      if (pa <= pb && pa <= pc)
	predLine[i] = left + (Guchar)c;
      else if (pb <= pc)
	predLine[i] = up + (Guchar)c;
      else
	predLine[i] = upLeft + (Guchar)c;
      break;
    case 10:			// PNG none
    default:			// no predictor or TIFF predictor
      predLine[i] = (Guchar)c;
      break;
    }
  }
  delete[] rawCharLine;

  if (predictor == 2) {
    if (nBits == 1) {
      inBuf = predLine[pixBytes - 1];
      for (i = pixBytes; i < rowBytes; i += 8) {
	inBuf = (inBuf << 8) | predLine[i];
	predLine[i] ^= inBuf >> nComps;
      }
    } else if (nBits == 8) {
      for (i = pixBytes; i < rowBytes; ++i) {
	predLine[i] += predLine[i - nComps];
      }
    } else {
      memset(upLeftBuf, 0, nComps + 1);
      bitMask = (1 << nBits) - 1;
      inBuf = outBuf = 0;
      inBits = outBits = 0;
      j = k = pixBytes;
      for (i = 0; i < width; ++i) {
	for (kk = 0; kk < nComps; ++kk) {
	  if (inBits < nBits) {
	    inBuf = (inBuf << 8) | (predLine[j++] & 0xff);
	    inBits += 8;
	  }
	  upLeftBuf[kk] = (Guchar)((upLeftBuf[kk] +
				    (inBuf >> (inBits - nBits))) & bitMask);
	  inBits -= nBits;
	  outBuf = (outBuf << nBits) | upLeftBuf[kk];
	  outBits += nBits;
	  if (outBits >= 8) {
	    predLine[k++] = (Guchar)(outBuf >> (outBits - 8));
	    outBits -= 8;
	  }
	}
      }
      if (outBits > 0) {
	predLine[k++] = (Guchar)((outBuf << (8 - outBits)) +
				 (inBuf & ((1 << (8 - outBits)) - 1)));
      }
    }
  }

  predIdx = pixBytes;

  return gTrue;
}

Project: poppler
File: Stream.cc

GooString *Stream::getPSFilter(int psLevel, const char *indent) {
  return new GooString();
}

Project: poppler
File: Stream.cc

GooString *ASCII85Stream::getPSFilter(int psLevel, const char *indent) {
  GooString *s;

  if (psLevel < 2) {
    return NULL;
  }
  if (!(s = str->getPSFilter(psLevel, indent))) {
    return NULL;
  }
  s->append(indent)->append("/ASCII85Decode filter\n");
  return s;
}

Project: poppler
File: Stream.cc

GooString *LZWStream::getPSFilter(int psLevel, const char *indent) {
  GooString *s;

  if (psLevel < 2 || pred) {
    return NULL;
  }
  if (!(s = str->getPSFilter(psLevel, indent))) {
    return NULL;
  }
  s->append(indent)->append("<< ");
  if (!early) {
    s->append("/EarlyChange 0 ");
  }
  s->append(">> /LZWDecode filter\n");
  return s;
}

Project: poppler
File: Stream.cc

GooString *RunLengthStream::getPSFilter(int psLevel, const char *indent) {
  GooString *s;

  if (psLevel < 2) {
    return NULL;
  }
  if (!(s = str->getPSFilter(psLevel, indent))) {
    return NULL;
  }
  s->append(indent)->append("/RunLengthDecode filter\n");
  return s;
}

Project: poppler
File: Stream.cc

GooString *CCITTFaxStream::getPSFilter(int psLevel, const char *indent) {
  GooString *s;
  char s1[50];

  if (psLevel < 2) {
    return NULL;
  }
  if (!(s = str->getPSFilter(psLevel, indent))) {
    return NULL;
  }
  s->append(indent)->append("<< ");
  if (encoding != 0) {
    sprintf(s1, "/K %d ", encoding);
    s->append(s1);
  }
  if (endOfLine) {
    s->append("/EndOfLine true ");
  }
  if (byteAlign) {
    s->append("/EncodedByteAlign true ");
  }
  sprintf(s1, "/Columns %d ", columns);
  s->append(s1);
  if (rows != 0) {
    sprintf(s1, "/Rows %d ", rows);
    s->append(s1);
  }
  if (!endOfBlock) {
    s->append("/EndOfBlock false ");
  }
  if (black) {
    s->append("/BlackIs1 true ");
  }
  s->append(">> /CCITTFaxDecode filter\n");
  return s;
}

Project: poppler
File: Stream.cc

GooString *DCTStream::getPSFilter(int psLevel, const char *indent) {
  GooString *s;

  if (psLevel < 2) {
    return NULL;
  }
  if (!(s = str->getPSFilter(psLevel, indent))) {
    return NULL;
  }
  s->append(indent)->append("<< >> /DCTDecode filter\n");
  return s;
}

Project: poppler
File: Stream.cc

GooString *FlateStream::getPSFilter(int psLevel, const char *indent) {
  GooString *s;

  if (psLevel < 3 || pred) {
    return NULL;
  }
  if (!(s = str->getPSFilter(psLevel, indent))) {
    return NULL;
  }
  s->append(indent)->append("<< >> /FlateDecode filter\n");
  return s;
}

Project: poppler
File: Stream.cc

GBool ImageStream::getPixel(Guchar *pix) {
  int i;

  if (imgIdx >= nVals) {
    if (!getLine()) {
      return gFalse;
    }
    imgIdx = 0;
  }
  for (i = 0; i < nComps; ++i) {
    pix[i] = imgLine[imgIdx++];
  }
  return gTrue;
}

Project: poppler
File: Stream.cc

int FileOutStream::getPos ()
{
  return ftell(f);
}

Project: poppler
File: Stream.cc

int Stream::getRawChar() {
  error(errInternal, -1, "Internal: called getRawChar() on non-predictor stream");
  return EOF;
}

Project: poppler
File: Stream.cc

int FlateStream::getRawChar() {
  return doGetRawChar();
}

Project: poppler
File: Stream.cc

void Stream::getRawChars(int nChars, int *buffer) {
  error(errInternal, -1, "Internal: called getRawChars() on non-predictor stream");
}

Project: poppler
File: Stream.cc

void FlateStream::getRawChars(int nChars, int *buffer) {
  for (int i = 0; i < nChars; ++i)
    buffer[i] = doGetRawChar();
}

Project: poppler
File: Stream.cc

Guint EmbedStream::getStart() {
  error(errInternal, -1, "Internal: called getStart() on EmbedStream");
  return 0;
}

Project: poppler

short CCITTFaxStream::getWhiteCode() {
  short code;
  const CCITTCode *p;
  int n;

  code = 0; // make gcc happy
  if (endOfBlock) {
    code = lookBits(12);
    if (code == EOF) {
      return 1;
    }
    if ((code >> 5) == 0) {
      p = &whiteTab1[code];
    } else {
      p = &whiteTab2[code >> 3];
    }
    if (p->bits > 0) {
      eatBits(p->bits);
      return p->n;
    }
  } else {
    for (n = 1; n <= 9; ++n) {
      code = lookBits(n);
      if (code == EOF) {
	return 1;
      }
      if (n < 9) {
	code <<= 9 - n;
      }
      p = &whiteTab2[code];
      if (p->bits == n) {
	eatBits(n);
	return p->n;
      }
    }
    for (n = 11; n <= 12; ++n) {
      code = lookBits(n);
      if (code == EOF) {
	return 1;
      }
      if (n < 12) {
	code <<= 12 - n;
      }
      p = &whiteTab1[code];
      if (p->bits == n) {
	eatBits(n);
	return p->n;
      }
    }
  }
  error(errSyntaxError, getPos(),
	"Bad white code ({0:04x}) in CCITTFax stream", code);
  eatBits(1);
  return 1;
}

Project: poppler
File: Stream.cc

GBool ASCII85Stream::isBinary(GBool last) {
  return str->isBinary(gFalse);
}

Project: poppler
File: Stream.cc

GBool LZWStream::isBinary(GBool last) {
  return str->isBinary(gTrue);
}

Project: poppler
File: Stream.cc

GBool RunLengthStream::isBinary(GBool last) {
  return str->isBinary(gTrue);
}

Project: poppler
File: Stream.cc

GBool DCTStream::isBinary(GBool last) {
  return str->isBinary(gTrue);
}

Project: poppler
File: Stream.cc

GBool FlateStream::isBinary(GBool last) {
  return str->isBinary(gTrue);
}

Project: poppler
File: Stream.cc

GBool BufStream::isBinary(GBool last) {
  return str->isBinary(gTrue);
}

Project: poppler
File: Stream.cc

GBool FixedLengthEncoder::isBinary(GBool last) {
  return str->isBinary(gTrue);
}

Project: poppler
File: Stream.cc

void FlateStream::loadFixedCodes() {
  litCodeTab.codes = fixedLitCodeTab.codes;
  litCodeTab.maxLen = fixedLitCodeTab.maxLen;
  distCodeTab.codes = fixedDistCodeTab.codes;
  distCodeTab.maxLen = fixedDistCodeTab.maxLen;
}

Project: poppler

short CCITTFaxStream::lookBits(int n) {
  int c;

  while (inputBits < n) {
    if ((c = str->getChar()) == EOF) {
      if (inputBits == 0) {
	return EOF;
      }
      return (inputBuf << (n - inputBits)) & (0xffffffff >> (32 - n));
    }
    inputBuf = (inputBuf << 8) + c;
    inputBits += 8;
  }
  return (inputBuf >> (inputBits - n)) & (0xffffffff >> (32 - n));
}

Project: poppler
File: Stream.cc

int StreamPredictor::lookChar() {
  if (predIdx >= rowBytes) {
    if (!getNextLine()) {
      return EOF;
    }
  }
  return predLine[predIdx];
}

Project: poppler
File: Stream.cc

int ASCII85Stream::lookChar() {
  int k;
  Gulong t;

  if (index >= n) {
    if (eof)
      return EOF;
    index = 0;
    do {
      c[0] = str->getChar();
    } while (Lexer::isSpace(c[0]));
    if (c[0] == '~' || c[0] == EOF) {
      eof = gTrue;
      n = 0;
      return EOF;
    } else if (c[0] == 'z') {
      b[0] = b[1] = b[2] = b[3] = 0;
      n = 4;
    } else {
      for (k = 1; k < 5; ++k) {
	do {
	  c[k] = str->getChar();
	} while (Lexer::isSpace(c[k]));
	if (c[k] == '~' || c[k] == EOF)
	  break;
      }
      n = k - 1;
      if (k < 5 && (c[k] == '~' || c[k] == EOF)) {
	for (++k; k < 5; ++k)
	  c[k] = 0x21 + 84;
	eof = gTrue;
      }
      t = 0;
      for (k = 0; k < 5; ++k)
	t = t * 85 + (c[k] - 0x21);
      for (k = 3; k >= 0; --k) {
	b[k] = (int)(t & 0xff);
	t >>= 8;
      }
    }
  }
  return b[index];
}

Project: poppler
File: Stream.cc

int FlateStream::lookChar() {
  int c;

  if (pred) {
    return pred->lookChar();
  }
  while (remain == 0) {
    if (endOfBlock && eof)
      return EOF;
    readSome();
  }
  c = buf[index];
  return c;
}

Project: poppler
File: Stream.cc

int BufStream::lookChar() {
  return buf[0];
}

Project: poppler
File: Stream.cc

int BufStream::lookChar(int idx) {
  return buf[idx];
}

Project: poppler
File: Stream.cc

int FixedLengthEncoder::lookChar() {
  if (length >= 0 && count >= length)
    return EOF;
  return str->getChar();
}

Project: poppler
File: Stream.cc

Stream *Stream::makeFilter(char *name, Stream *str, Object *params) {
  int pred;			// parameters
  int colors;
  int bits;
  int early;
  int encoding;
  GBool endOfLine, byteAlign, endOfBlock, black;
  int columns, rows;
  int colorXform;
  Object globals, obj;

  if (!strcmp(name, "ASCIIHexDecode") || !strcmp(name, "AHx")) {
    str = new ASCIIHexStream(str);
  } else if (!strcmp(name, "ASCII85Decode") || !strcmp(name, "A85")) {
    str = new ASCII85Stream(str);
  } else if (!strcmp(name, "LZWDecode") || !strcmp(name, "LZW")) {
    pred = 1;
    columns = 1;
    colors = 1;
    bits = 8;
    early = 1;
    if (params->isDict()) {
      params->dictLookup("Predictor", &obj);
      if (obj.isInt())
	pred = obj.getInt();
      obj.free();
      params->dictLookup("Columns", &obj);
      if (obj.isInt())
	columns = obj.getInt();
      obj.free();
      params->dictLookup("Colors", &obj);
      if (obj.isInt())
	colors = obj.getInt();
      obj.free();
      params->dictLookup("BitsPerComponent", &obj);
      if (obj.isInt())
	bits = obj.getInt();
      obj.free();
      params->dictLookup("EarlyChange", &obj);
      if (obj.isInt())
	early = obj.getInt();
      obj.free();
    }
    str = new LZWStream(str, pred, columns, colors, bits, early);
  } else if (!strcmp(name, "RunLengthDecode") || !strcmp(name, "RL")) {
    str = new RunLengthStream(str);
  } else if (!strcmp(name, "CCITTFaxDecode") || !strcmp(name, "CCF")) {
    encoding = 0;
    endOfLine = gFalse;
    byteAlign = gFalse;
    columns = 1728;
    rows = 0;
    endOfBlock = gTrue;
    black = gFalse;
    if (params->isDict()) {
      params->dictLookup("K", &obj);
      if (obj.isInt()) {
	encoding = obj.getInt();
      }
      obj.free();
      params->dictLookup("EndOfLine", &obj);
      if (obj.isBool()) {
	endOfLine = obj.getBool();
      }
      obj.free();
      params->dictLookup("EncodedByteAlign", &obj);
      if (obj.isBool()) {
	byteAlign = obj.getBool();
      }
      obj.free();
      params->dictLookup("Columns", &obj);
      if (obj.isInt()) {
	columns = obj.getInt();
      }
      obj.free();
      params->dictLookup("Rows", &obj);
      if (obj.isInt()) {
	rows = obj.getInt();
      }
      obj.free();
      params->dictLookup("EndOfBlock", &obj);
      if (obj.isBool()) {
	endOfBlock = obj.getBool();
      }
      obj.free();
      params->dictLookup("BlackIs1", &obj);
      if (obj.isBool()) {
	black = obj.getBool();
      }
      obj.free();
    }
    str = new CCITTFaxStream(str, encoding, endOfLine, byteAlign,
			     columns, rows, endOfBlock, black);
  } else if (!strcmp(name, "DCTDecode") || !strcmp(name, "DCT")) {
    colorXform = -1;
    if (params->isDict()) {
      if (params->dictLookup("ColorTransform", &obj)->isInt()) {
	colorXform = obj.getInt();
      }
      obj.free();
    }
    str = new DCTStream(str, colorXform);
  } else if (!strcmp(name, "FlateDecode") || !strcmp(name, "Fl")) {
    pred = 1;
    columns = 1;
    colors = 1;
    bits = 8;
    if (params->isDict()) {
      params->dictLookup("Predictor", &obj);
      if (obj.isInt())
	pred = obj.getInt();
      obj.free();
      params->dictLookup("Columns", &obj);
      if (obj.isInt())
	columns = obj.getInt();
      obj.free();
      params->dictLookup("Colors", &obj);
      if (obj.isInt())
	colors = obj.getInt();
      obj.free();
      params->dictLookup("BitsPerComponent", &obj);
      if (obj.isInt())
	bits = obj.getInt();
      obj.free();
    }
    str = new FlateStream(str, pred, columns, colors, bits);
  } else if (!strcmp(name, "JBIG2Decode")) {
    if (params->isDict()) {
      params->dictLookup("JBIG2Globals", &globals);
    }
    str = new JBIG2Stream(str, &globals);
    globals.free();
  } else if (!strcmp(name, "JPXDecode")) {
    str = new JPXStream(str);
  } else {
    error(errSyntaxError, getPos(), "Unknown filter '{0:s}'", name);
    str = new EOFStream(str);
  }
  return str;
}

Project: poppler
File: Stream.cc

Stream *FileStream::makeSubStream(Guint startA, GBool limitedA,
				  Guint lengthA, Object *dictA) {
  return new FileStream(f, startA, limitedA, lengthA, dictA);
}

Project: poppler
File: Stream.cc

Stream *CachedFileStream::makeSubStream(Guint startA, GBool limitedA,
        Guint lengthA, Object *dictA)
{
  cc->incRefCnt();
  return new CachedFileStream(cc, startA, limitedA, lengthA, dictA);
}

Project: poppler
File: Stream.cc

Stream *MemStream::makeSubStream(Guint startA, GBool limited,
				 Guint lengthA, Object *dictA) {
  MemStream *subStr;
  Guint newLength;

  if (!limited || startA + lengthA > start + length) {
    newLength = start + length - startA;
  } else {
    newLength = lengthA;
  }
  subStr = new MemStream(buf, startA, newLength, dictA);
  return subStr;
}

Project: poppler
File: Stream.cc

Stream *EmbedStream::makeSubStream(Guint start, GBool limitedA,
				   Guint lengthA, Object *dictA) {
  error(errInternal, -1, "Called makeSubStream() on EmbedStream");
  return NULL;
}

Project: poppler
File: Stream.cc

void FileStream::moveStart(int delta) {
  start += delta;
  bufPtr = bufEnd = buf;
  bufPos = start;
}

Project: poppler
File: Stream.cc

void CachedFileStream::moveStart(int delta)
{
  start += delta;
  bufPtr = bufEnd = buf;
  bufPos = start;
}

Project: poppler
File: Stream.cc

void MemStream::moveStart(int delta) {
  start += delta;
  length -= delta;
  bufPtr = buf + start;
}

Project: poppler
File: Stream.cc

void EmbedStream::moveStart(int delta) {
  error(errInternal, -1, "Internal: called moveStart() on EmbedStream");
}

Project: poppler
File: Stream.cc

void FileOutStream::printf(const char *format, ...)
{
  va_list argptr;
  va_start (argptr, format);
  vfprintf(f, format, argptr);
  va_end (argptr);
}

Project: poppler

GBool LZWStream::processNextCode() {
  int code;
  int nextLength;
  int i, j;

  if (eof) {
    return gFalse;
  }

 start:
  code = getCode();
  if (code == EOF || code == 257) {
    eof = gTrue;
    return gFalse;
  }
  if (code == 256) {
    clearTable();
    goto start;
  }
  if (nextCode >= 4097) {
    error(errSyntaxError, getPos(),
	  "Bad LZW stream - expected clear-table code");
    clearTable();
  }

  nextLength = seqLength + 1;
  if (code < 256) {
    seqBuf[0] = code;
    seqLength = 1;
  } else if (code < nextCode) {
    seqLength = table[code].length;
    for (i = seqLength - 1, j = code; i > 0; --i) {
      seqBuf[i] = table[j].tail;
      j = table[j].head;
    }
    seqBuf[0] = j;
  } else if (code == nextCode) {
    seqBuf[seqLength] = newChar;
    ++seqLength;
  } else {
    error(errSyntaxError, getPos(), "Bad LZW stream - unexpected code");
    eof = gTrue;
    return gFalse;
  }
  newChar = seqBuf[0];
  if (first) {
    first = gFalse;
  } else {
    table[nextCode].length = nextLength;
    table[nextCode].head = prevCode;
    table[nextCode].tail = newChar;
    ++nextCode;
    if (nextCode + early == 512)
      nextBits = 10;
    else if (nextCode + early == 1024)
      nextBits = 11;
    else if (nextCode + early == 2048)
      nextBits = 12;
  }
  prevCode = code;

  seqIndex = 0;

  return gTrue;
}

Project: poppler
File: Stream.cc

int DCTStream::read16() {
  int c1, c2;

  if ((c1 = str->getChar()) == EOF)
    return EOF;
  if ((c2 = str->getChar()) == EOF)
    return EOF;
  return (c1 << 8) + c2;
}

Project: poppler
File: Stream.cc

GBool DCTStream::readAdobeMarker() {
  int length, i;
  char buf[12];
  int c;

  length = read16();
  if (length < 14) {
    goto err;
  }
  for (i = 0; i < 12; ++i) {
    if ((c = str->getChar()) == EOF) {
      goto err;
    }
    buf[i] = c;
  }
  if (strncmp(buf, "Adobe", 5)) {
    goto err;
  }
  colorXform = buf[11];
  gotAdobeMarker = gTrue;
  for (i = 14; i < length; ++i) {
    if (str->getChar() == EOF) {
      goto err;
    }
  }
  return gTrue;

 err:
  error(errSyntaxError, getPos(), "Bad DCT Adobe APP14 marker");
  return gFalse;
}

Project: poppler
File: Stream.cc

int DCTStream::readAmp(int size) {
  int amp, bit;
  int bits;

  amp = 0;
  for (bits = 0; bits < size; ++bits) {
    if ((bit = readBit()) == EOF)
      return 9999;
    amp = (amp << 1) + bit;
  }
  if (amp < (1 << (size - 1)))
    amp -= (1 << size) - 1;
  return amp;
}

Project: poppler
File: Stream.cc

GBool DCTStream::readBaselineSOF() {
  int length;
  int prec;
  int i;
  int c;

  length = read16();
  prec = str->getChar();
  height = read16();
  width = read16();
  numComps = str->getChar();
  if (numComps <= 0 || numComps > 4) {
    error(errSyntaxError, getPos(), "Bad number of components in DCT stream");
    numComps = 0;
    return gFalse;
  }
  if (prec != 8) {
    error(errSyntaxError, getPos(), "Bad DCT precision {0:d}", prec);
    return gFalse;
  }
  for (i = 0; i < numComps; ++i) {
    compInfo[i].id = str->getChar();
    c = str->getChar();
    compInfo[i].hSample = (c >> 4) & 0x0f;
    compInfo[i].vSample = c & 0x0f;
    compInfo[i].quantTable = str->getChar();
    if (compInfo[i].hSample < 1 || compInfo[i].hSample > 4 ||
	compInfo[i].vSample < 1 || compInfo[i].vSample > 4) {
      error(errSyntaxError, getPos(), "Bad DCT sampling factor");
      return gFalse;
    }
    if (compInfo[i].quantTable < 0 || compInfo[i].quantTable > 3) {
      error(errSyntaxError, getPos(), "Bad DCT quant table selector");
      return gFalse;
    }
  }
  progressive = gFalse;
  return gTrue;
}

Project: poppler
File: Stream.cc

int DCTStream::readBit() {
  int bit;
  int c, c2;

  if (inputBits == 0) {
    if ((c = str->getChar()) == EOF)
      return EOF;
    if (c == 0xff) {
      do {
	c2 = str->getChar();
      } while (c2 == 0xff);
      if (c2 != 0x00) {
	error(errSyntaxError, getPos(), "Bad DCT data: missing 00 after ff");
	return EOF;
      }
    }
    inputBuf = c;
    inputBits = 8;
  }
  bit = (inputBuf >> (inputBits - 1)) & 1;
  --inputBits;
  return bit;
}

Project: poppler

GBool FlateStream::readDynamicCodes() {
  int numCodeLenCodes;
  int numLitCodes;
  int numDistCodes;
  int codeLenCodeLengths[flateMaxCodeLenCodes];
  FlateHuffmanTab codeLenCodeTab;
  int len, repeat, code;
  int i;

  codeLenCodeTab.codes = NULL;

  if ((numLitCodes = getCodeWord(5)) == EOF) {
    goto err;
  }
  numLitCodes += 257;
  if ((numDistCodes = getCodeWord(5)) == EOF) {
    goto err;
  }
  numDistCodes += 1;
  if ((numCodeLenCodes = getCodeWord(4)) == EOF) {
    goto err;
  }
  numCodeLenCodes += 4;
  if (numLitCodes > flateMaxLitCodes ||
      numDistCodes > flateMaxDistCodes ||
      numCodeLenCodes > flateMaxCodeLenCodes) {
    goto err;
  }

  for (i = 0; i < flateMaxCodeLenCodes; ++i) {
    codeLenCodeLengths[i] = 0;
  }
  for (i = 0; i < numCodeLenCodes; ++i) {
    if ((codeLenCodeLengths[codeLenCodeMap[i]] = getCodeWord(3)) == -1) {
      goto err;
    }
  }
  compHuffmanCodes(codeLenCodeLengths, flateMaxCodeLenCodes, &codeLenCodeTab);

  len = 0;
  repeat = 0;
  i = 0;
  while (i < numLitCodes + numDistCodes) {
    if ((code = getHuffmanCodeWord(&codeLenCodeTab)) == EOF) {
      goto err;
    }
    if (code == 16) {
      if ((repeat = getCodeWord(2)) == EOF) {
	goto err;
      }
      repeat += 3;
      if (i + repeat > numLitCodes + numDistCodes) {
	goto err;
      }
      for (; repeat > 0; --repeat) {
	codeLengths[i++] = len;
      }
    } else if (code == 17) {
      if ((repeat = getCodeWord(3)) == EOF) {
	goto err;
      }
      repeat += 3;
      if (i + repeat > numLitCodes + numDistCodes) {
	goto err;
      }
      len = 0;
      for (; repeat > 0; --repeat) {
	codeLengths[i++] = 0;
      }
    } else if (code == 18) {
      if ((repeat = getCodeWord(7)) == EOF) {
	goto err;
      }
      repeat += 11;
      if (i + repeat > numLitCodes + numDistCodes) {
	goto err;
      }
      len = 0;
      for (; repeat > 0; --repeat) {
	codeLengths[i++] = 0;
      }
    } else {
      codeLengths[i++] = len = code;
    }
  }
  compHuffmanCodes(codeLengths, numLitCodes, &litCodeTab);
  compHuffmanCodes(codeLengths + numLitCodes, numDistCodes, &distCodeTab);

  gfree(codeLenCodeTab.codes);
  return gTrue;

err:
  error(errSyntaxError, getPos(), "Bad dynamic code table in flate stream");
  gfree(codeLenCodeTab.codes);
  return gFalse;
}

Project: poppler
File: Stream.cc

GBool DCTStream::readHuffmanTables() {
  DCTHuffTable *tbl;
  int length;
  int index;
  Gushort code;
  Guchar sym;
  int i;
  int c;

  length = read16() - 2;
  while (length > 0) {
    index = str->getChar();
    --length;
    if ((index & 0x0f) >= 4) {
      error(errSyntaxError, getPos(), "Bad DCT Huffman table");
      return gFalse;
    }
    if (index & 0x10) {
      index &= 0x0f;
      if (index >= numACHuffTables)
	numACHuffTables = index+1;
      tbl = &acHuffTables[index];
    } else {
      index &= 0x0f;
      if (index >= numDCHuffTables)
	numDCHuffTables = index+1;
      tbl = &dcHuffTables[index];
    }
    sym = 0;
    code = 0;
    for (i = 1; i <= 16; ++i) {
      c = str->getChar();
      tbl->firstSym[i] = sym;
      tbl->firstCode[i] = code;
      tbl->numCodes[i] = c;
      sym += c;
      code = (code + c) << 1;
    }
    length -= 16;
    for (i = 0; i < sym; ++i)
      tbl->sym[i] = str->getChar();
    length -= sym;
  }
  return gTrue;
}

Project: poppler
File: Stream.cc

GBool DCTStream::readJFIFMarker() {
  int length, i;
  char buf[5];
  int c;

  length = read16();
  length -= 2;
  if (length >= 5) {
    for (i = 0; i < 5; ++i) {
      if ((c = str->getChar()) == EOF) {
	error(errSyntaxError, getPos(), "Bad DCT APP0 marker");
	return gFalse;
      }
      buf[i] = c;
    }
    length -= 5;
    if (!memcmp(buf, "JFIF\0", 5)) {
      gotJFIFMarker = gTrue;
    }
  }
  while (length > 0) {
    if (str->getChar() == EOF) {
      error(errSyntaxError, getPos(), "Bad DCT APP0 marker");
      return gFalse;
    }
    --length;
  }
  return gTrue;
}

Project: poppler

GBool DCTStream::readMCURow() {
  int data1[64];
  Guchar data2[64];
  Guchar *p1, *p2;
  int pY, pCb, pCr, pR, pG, pB;
  int h, v, horiz, vert, hSub, vSub;
  int x1, x2, y2, x3, y3, x4, y4, x5, y5, cc, i;
  int c;

  for (x1 = 0; x1 < width; x1 += mcuWidth) {

    if (restartInterval > 0 && restartCtr == 0) {
      c = readMarker();
      if (c != restartMarker) {
	error(errSyntaxError, getPos(),
	      "Bad DCT data: incorrect restart marker");
	return gFalse;
      }
      if (++restartMarker == 0xd8)
	restartMarker = 0xd0;
      restart();
    }

    for (cc = 0; cc < numComps; ++cc) {
      h = compInfo[cc].hSample;
      v = compInfo[cc].vSample;
      horiz = mcuWidth / h;
      vert = mcuHeight / v;
      hSub = horiz / 8;
      vSub = vert / 8;
      for (y2 = 0; y2 < mcuHeight; y2 += vert) {
	for (x2 = 0; x2 < mcuWidth; x2 += horiz) {
	  if (unlikely(scanInfo.dcHuffTable[cc] >= 4) || unlikely(scanInfo.acHuffTable[cc] >= 4)) {
	    return gFalse;
	  }
	  if (!readDataUnit(&dcHuffTables[scanInfo.dcHuffTable[cc]],
			    &acHuffTables[scanInfo.acHuffTable[cc]],
			    &compInfo[cc].prevDC,
			    data1)) {
	    return gFalse;
	  }
	  transformDataUnit(quantTables[compInfo[cc].quantTable],
			    data1, data2);
	  if (hSub == 1 && vSub == 1) {
	    for (y3 = 0, i = 0; y3 < 8; ++y3, i += 8) {
	      p1 = &rowBuf[cc][y2+y3][x1+x2];
	      p1[0] = data2[i];
	      p1[1] = data2[i+1];
	      p1[2] = data2[i+2];
	      p1[3] = data2[i+3];
	      p1[4] = data2[i+4];
	      p1[5] = data2[i+5];
	      p1[6] = data2[i+6];
	      p1[7] = data2[i+7];
	    }
	  } else if (hSub == 2 && vSub == 2) {
	    for (y3 = 0, i = 0; y3 < 16; y3 += 2, i += 8) {
	      p1 = &rowBuf[cc][y2+y3][x1+x2];
	      p2 = &rowBuf[cc][y2+y3+1][x1+x2];
	      p1[0] = p1[1] = p2[0] = p2[1] = data2[i];
	      p1[2] = p1[3] = p2[2] = p2[3] = data2[i+1];
	      p1[4] = p1[5] = p2[4] = p2[5] = data2[i+2];
	      p1[6] = p1[7] = p2[6] = p2[7] = data2[i+3];
	      p1[8] = p1[9] = p2[8] = p2[9] = data2[i+4];
	      p1[10] = p1[11] = p2[10] = p2[11] = data2[i+5];
	      p1[12] = p1[13] = p2[12] = p2[13] = data2[i+6];
	      p1[14] = p1[15] = p2[14] = p2[15] = data2[i+7];
	    }
	  } else {
	    i = 0;
	    for (y3 = 0, y4 = 0; y3 < 8; ++y3, y4 += vSub) {
	      for (x3 = 0, x4 = 0; x3 < 8; ++x3, x4 += hSub) {
		for (y5 = 0; y5 < vSub; ++y5)
		  for (x5 = 0; x5 < hSub; ++x5)
		    rowBuf[cc][y2+y4+y5][x1+x2+x4+x5] = data2[i];
		++i;
	      }
	    }
	  }
	}
      }
    }
    --restartCtr;

    if (colorXform) {
      if (numComps == 3) {
	for (y2 = 0; y2 < mcuHeight; ++y2) {
	  for (x2 = 0; x2 < mcuWidth; ++x2) {
	    pY = rowBuf[0][y2][x1+x2];
	    pCb = rowBuf[1][y2][x1+x2] - 128;
	    pCr = rowBuf[2][y2][x1+x2] - 128;
	    pR = ((pY << 16) + dctCrToR * pCr + 32768) >> 16;
	    rowBuf[0][y2][x1+x2] = dctClip[dctClipOffset + pR];
	    pG = ((pY << 16) + dctCbToG * pCb + dctCrToG * pCr + 32768) >> 16;
	    rowBuf[1][y2][x1+x2] = dctClip[dctClipOffset + pG];
	    pB = ((pY << 16) + dctCbToB * pCb + 32768) >> 16;
	    rowBuf[2][y2][x1+x2] = dctClip[dctClipOffset + pB];
	  }
	}
      } else if (numComps == 4) {
	for (y2 = 0; y2 < mcuHeight; ++y2) {
	  for (x2 = 0; x2 < mcuWidth; ++x2) {
	    pY = rowBuf[0][y2][x1+x2];
	    pCb = rowBuf[1][y2][x1+x2] - 128;
	    pCr = rowBuf[2][y2][x1+x2] - 128;
	    pR = ((pY << 16) + dctCrToR * pCr + 32768) >> 16;
	    rowBuf[0][y2][x1+x2] = 255 - dctClip[dctClipOffset + pR];
	    pG = ((pY << 16) + dctCbToG * pCb + dctCrToG * pCr + 32768) >> 16;
	    rowBuf[1][y2][x1+x2] = 255 - dctClip[dctClipOffset + pG];
	    pB = ((pY << 16) + dctCbToB * pCb + 32768) >> 16;
	    rowBuf[2][y2][x1+x2] = 255 - dctClip[dctClipOffset + pB];
	  }
	}
      }
    }
  }
  return gTrue;
}

Project: poppler
File: Stream.cc

int DCTStream::readMarker() {
  int c;

  do {
    do {
      c = str->getChar();
    } while (c != 0xff && c != EOF);
    while (c == 0xff) {
      c = str->getChar();
    }
  } while (c == 0x00);
  return c;
}

Project: poppler

GBool DCTStream::readProgressiveDataUnit(DCTHuffTable *dcHuffTable,
					 DCTHuffTable *acHuffTable,
					 int *prevDC, int data[64]) {
  int run, size, amp, bit, c;
  int i, j, k;

  i = scanInfo.firstCoeff;
  if (i == 0) {
    if (scanInfo.ah == 0) {
      if ((size = readHuffSym(dcHuffTable)) == 9999) {
	return gFalse;
      }
      if (size > 0) {
	if ((amp = readAmp(size)) == 9999) {
	  return gFalse;
	}
      } else {
	amp = 0;
      }
      data[0] += (*prevDC += amp) << scanInfo.al;
    } else {
      if ((bit = readBit()) == 9999) {
	return gFalse;
      }
      data[0] += bit << scanInfo.al;
    }
    ++i;
  }
  if (scanInfo.lastCoeff == 0) {
    return gTrue;
  }

  if (eobRun > 0) {
    while (i <= scanInfo.lastCoeff) {
      j = dctZigZag[i++];
      if (data[j] != 0) {
	if ((bit = readBit()) == EOF) {
	  return gFalse;
	}
	if (bit) {
	  data[j] += 1 << scanInfo.al;
	}
      }
    }
    --eobRun;
    return gTrue;
  }

  while (i <= scanInfo.lastCoeff) {
    if ((c = readHuffSym(acHuffTable)) == 9999) {
      return gFalse;
    }

    if (c == 0xf0) {
      k = 0;
      while (k < 16 && i <= scanInfo.lastCoeff) {
	j = dctZigZag[i++];
	if (data[j] == 0) {
	  ++k;
	} else {
	  if ((bit = readBit()) == EOF) {
	    return gFalse;
	  }
	  if (bit) {
	    data[j] += 1 << scanInfo.al;
	  }
	}
      }

    } else if ((c & 0x0f) == 0x00) {
      j = c >> 4;
      eobRun = 0;
      for (k = 0; k < j; ++k) {
	if ((bit = readBit()) == EOF) {
	  return gFalse;
	}
	eobRun = (eobRun << 1) | bit;
      }
      eobRun += 1 << j;
      while (i <= scanInfo.lastCoeff) {
	j = dctZigZag[i++];
	if (data[j] != 0) {
	  if ((bit = readBit()) == EOF) {
	    return gFalse;
	  }
	  if (bit) {
	    data[j] += 1 << scanInfo.al;
	  }
	}
      }
      --eobRun;
      break;

    } else {
      run = (c >> 4) & 0x0f;
      size = c & 0x0f;
      if ((amp = readAmp(size)) == 9999) {
	return gFalse;
      }
      j = 0; // make gcc happy
      for (k = 0; k <= run && i <= scanInfo.lastCoeff; ++k) {
	j = dctZigZag[i++];
	while (data[j] != 0 && i <= scanInfo.lastCoeff) {
	  if ((bit = readBit()) == EOF) {
	    return gFalse;
	  }
	  if (bit) {
	    data[j] += 1 << scanInfo.al;
	  }
	  j = dctZigZag[i++];
	}
      }
      data[j] = amp << scanInfo.al;
    }
  }

  return gTrue;
}

Project: poppler
File: Stream.cc

GBool DCTStream::readQuantTables() {
  int length, prec, i, index;

  length = read16() - 2;
  while (length > 0) {
    index = str->getChar();
    prec = (index >> 4) & 0x0f;
    index &= 0x0f;
    if (prec > 1 || index >= 4) {
      error(errSyntaxError, getPos(), "Bad DCT quantization table");
      return gFalse;
    }
    if (index == numQuantTables) {
      numQuantTables = index + 1;
    }
    for (i = 0; i < 64; ++i) {
      if (prec) {
	quantTables[index][dctZigZag[i]] = read16();
      } else {
	quantTables[index][dctZigZag[i]] = str->getChar();
      }
    }
    if (prec) {
      length -= 129;
    } else {
      length -= 65;
    }
  }
  return gTrue;
}

Project: poppler
File: Stream.cc

GBool DCTStream::readRestartInterval() {
  int length;

  length = read16();
  if (length != 4) {
    error(errSyntaxError, getPos(), "Bad DCT restart interval");
    return gFalse;
  }
  restartInterval = read16();
  return gTrue;
}

Project: poppler

void DCTStream::readScan() {
  int data[64];
  int x1, y1, dx1, dy1, x2, y2, y3, cc, i;
  int h, v, horiz, vert, vSub;
  int *p1;
  int c;

  if (scanInfo.numComps == 1) {
    for (cc = 0; cc < numComps; ++cc) {
      if (scanInfo.comp[cc]) {
	break;
      }
    }
    dx1 = mcuWidth / compInfo[cc].hSample;
    dy1 = mcuHeight / compInfo[cc].vSample;
  } else {
    dx1 = mcuWidth;
    dy1 = mcuHeight;
  }

  for (y1 = 0; y1 < height; y1 += dy1) {
    for (x1 = 0; x1 < width; x1 += dx1) {

      if (restartInterval > 0 && restartCtr == 0) {
	c = readMarker();
	if (c != restartMarker) {
	  error(errSyntaxError, getPos(),
		"Bad DCT data: incorrect restart marker");
	  return;
	}
	if (++restartMarker == 0xd8) {
	  restartMarker = 0xd0;
	}
	restart();
      }

      for (cc = 0; cc < numComps; ++cc) {
	if (!scanInfo.comp[cc]) {
	  continue;
	}

	h = compInfo[cc].hSample;
	v = compInfo[cc].vSample;
	horiz = mcuWidth / h;
	vert = mcuHeight / v;
	vSub = vert / 8;
	for (y2 = 0; y2 < dy1; y2 += vert) {
	  for (x2 = 0; x2 < dx1; x2 += horiz) {

	    p1 = &frameBuf[cc][(y1+y2) * bufWidth + (x1+x2)];
	    for (y3 = 0, i = 0; y3 < 8; ++y3, i += 8) {
	      data[i] = p1[0];
	      data[i+1] = p1[1];
	      data[i+2] = p1[2];
	      data[i+3] = p1[3];
	      data[i+4] = p1[4];
	      data[i+5] = p1[5];
	      data[i+6] = p1[6];
	      data[i+7] = p1[7];
	      p1 += bufWidth * vSub;
	    }

	    if (progressive) {
	      if (!readProgressiveDataUnit(
		       &dcHuffTables[scanInfo.dcHuffTable[cc]],
		       &acHuffTables[scanInfo.acHuffTable[cc]],
		       &compInfo[cc].prevDC,
		       data)) {
		return;
	      }
	    } else {
	      if (!readDataUnit(&dcHuffTables[scanInfo.dcHuffTable[cc]],
				&acHuffTables[scanInfo.acHuffTable[cc]],
				&compInfo[cc].prevDC,
				data)) {
		return;
	      }
	    }

	    p1 = &frameBuf[cc][(y1+y2) * bufWidth + (x1+x2)];
	    for (y3 = 0, i = 0; y3 < 8; ++y3, i += 8) {
	      p1[0] = data[i];
	      p1[1] = data[i+1];
	      p1[2] = data[i+2];
	      p1[3] = data[i+3];
	      p1[4] = data[i+4];
	      p1[5] = data[i+5];
	      p1[6] = data[i+6];
	      p1[7] = data[i+7];
	      p1 += bufWidth * vSub;
	    }
	  }
	}
      }
      --restartCtr;
    }
  }
}

Project: poppler
File: Stream.cc

void FlateStream::readSome() {
  int code1, code2;
  int len, dist;
  int i, j, k;
  int c;

  if (endOfBlock) {
    if (!startBlock())
      return;
  }

  if (compressedBlock) {
    if ((code1 = getHuffmanCodeWord(&litCodeTab)) == EOF)
      goto err;
    if (code1 < 256) {
      buf[index] = code1;
      remain = 1;
    } else if (code1 == 256) {
      endOfBlock = gTrue;
      remain = 0;
    } else {
      code1 -= 257;
      code2 = lengthDecode[code1].bits;
      if (code2 > 0 && (code2 = getCodeWord(code2)) == EOF)
	goto err;
      len = lengthDecode[code1].first + code2;
      if ((code1 = getHuffmanCodeWord(&distCodeTab)) == EOF)
	goto err;
      code2 = distDecode[code1].bits;
      if (code2 > 0 && (code2 = getCodeWord(code2)) == EOF)
	goto err;
      dist = distDecode[code1].first + code2;
      i = index;
      j = (index - dist) & flateMask;
      for (k = 0; k < len; ++k) {
	buf[i] = buf[j];
	i = (i + 1) & flateMask;
	j = (j + 1) & flateMask;
      }
      remain = len;
    }

  } else {
    len = (blockLen < flateWindow) ? blockLen : flateWindow;
    for (i = 0, j = index; i < len; ++i, j = (j + 1) & flateMask) {
      if ((c = str->getChar()) == EOF) {
	endOfBlock = eof = gTrue;
	break;
      }
      buf[j] = c & 0xff;
    }
    remain = i;
    blockLen -= len;
    if (blockLen == 0)
      endOfBlock = gTrue;
  }

  return;

err:
  error(errSyntaxError, getPos(), "Unexpected end of file in flate stream");
  endOfBlock = eof = gTrue;
  remain = 0;
}

Project: poppler
File: Stream.cc

GBool DCTStream::readTrailer() {
  int c;

  c = readMarker();
  if (c != 0xd9) {		// EOI
    error(errSyntaxError, getPos(), "Bad DCT trailer");
    return gFalse;
  }
  return gTrue;
}

Project: poppler
File: Stream.cc

void ImageStream::reset() {
  str->reset();
}

Project: poppler
File: Stream.cc

void FileStream::reset() {
#if HAVE_FSEEKO
  savePos = (Guint)ftello(f);
  fseeko(f, start, SEEK_SET);
#elif HAVE_FSEEK64
  savePos = (Guint)ftell64(f);
  fseek64(f, start, SEEK_SET);
#else
  savePos = (Guint)ftell(f);
  fseek(f, start, SEEK_SET);
#endif
  saved = gTrue;
  bufPtr = bufEnd = buf;
  bufPos = start;
}

Project: poppler
File: Stream.cc

void CachedFileStream::reset()
{
  savePos = (Guint)cc->tell();
  cc->seek(start, SEEK_SET);

  saved = gTrue;
  bufPtr = bufEnd = buf;
  bufPos = start;
}

Project: poppler
File: Stream.cc

void ASCIIHexStream::reset() {
  str->reset();
  buf = EOF;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

void ASCII85Stream::reset() {
  str->reset();
  index = n = 0;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

void LZWStream::reset() {
  str->reset();
  eof = gFalse;
  inputBits = 0;
  clearTable();
}

Project: poppler

void CCITTFaxStream::reset() {
  int code1;

  ccittReset(gFalse);

  if (codingLine != NULL && refLine != NULL) {
    eof = gFalse;
    codingLine[0] = columns;
  } else {
    eof = gTrue;
  }

  while ((code1 = lookBits(12)) == 0) {
    eatBits(1);
  }
  if (code1 == 0x001) {
    eatBits(12);
    endOfLine = gTrue;
  }
  if (encoding > 0) {
    nextLine2D = !lookBits(1);
    eatBits(1);
  }
}

Project: poppler

void DCTStream::reset() {
  int i, j;

  dctReset(gFalse);

  if (!readHeader()) {
    y = height;
    return;
  }

  if (numComps == 1) {
    compInfo[0].hSample = compInfo[0].vSample = 1;
  }
  mcuWidth = compInfo[0].hSample;
  mcuHeight = compInfo[0].vSample;
  for (i = 1; i < numComps; ++i) {
    if (compInfo[i].hSample > mcuWidth) {
      mcuWidth = compInfo[i].hSample;
    }
    if (compInfo[i].vSample > mcuHeight) {
      mcuHeight = compInfo[i].vSample;
    }
  }
  mcuWidth *= 8;
  mcuHeight *= 8;

  if (colorXform == -1) {
    if (numComps == 3) {
      if (gotJFIFMarker) {
	colorXform = 1;
      } else if (compInfo[0].id == 82 && compInfo[1].id == 71 &&
		 compInfo[2].id == 66) { // ASCII "RGB"
	colorXform = 0;
      } else {
	colorXform = 1;
      }
    } else {
      colorXform = 0;
    }
  }

  if (progressive || !interleaved) {

    bufWidth = ((width + mcuWidth - 1) / mcuWidth) * mcuWidth;
    bufHeight = ((height + mcuHeight - 1) / mcuHeight) * mcuHeight;
    if (bufWidth <= 0 || bufHeight <= 0 ||
	bufWidth > INT_MAX / bufWidth / (int)sizeof(int)) {
      error(errSyntaxError, getPos(), "Invalid image size in DCT stream");
      y = height;
      return;
    }
    for (i = 0; i < numComps; ++i) {
      frameBuf[i] = (int *)gmallocn(bufWidth * bufHeight, sizeof(int));
      memset(frameBuf[i], 0, bufWidth * bufHeight * sizeof(int));
    }

    do {
      restartMarker = 0xd0;
      restart();
      readScan();
    } while (readHeader());

    decodeImage();

    comp = 0;
    x = 0;
    y = 0;

  } else {

    bufWidth = ((width + mcuWidth - 1) / mcuWidth) * mcuWidth;
    for (i = 0; i < numComps; ++i) {
      for (j = 0; j < mcuHeight; ++j) {
	rowBuf[i][j] = (Guchar *)gmallocn(bufWidth, sizeof(Guchar));
      }
    }

    comp = 0;
    x = 0;
    y = 0;
    dy = mcuHeight;

    restartMarker = 0xd0;
    restart();
  }
}

Project: poppler

void FlateStream::reset() {
  int cmf, flg;

  flateReset(gFalse);

  endOfBlock = eof = gTrue;
  cmf = str->getChar();
  flg = str->getChar();
  if (cmf == EOF || flg == EOF)
    return;
  if ((cmf & 0x0f) != 0x08) {
    error(errSyntaxError, getPos(), "Unknown compression method in flate stream");
    return;
  }
  if ((((cmf << 8) + flg) % 31) != 0) {
    error(errSyntaxError, getPos(), "Bad FCHECK in flate stream");
    return;
  }
  if (flg & 0x20) {
    error(errSyntaxError, getPos(), "FDICT bit set in flate stream");
    return;
  }

  eof = gFalse;
}

Project: poppler
File: Stream.cc

void BufStream::reset() {
  int i;

  str->reset();
  for (i = 0; i < bufSize; ++i) {
    buf[i] = str->getChar();
  }
}

Project: poppler
File: Stream.cc

void FixedLengthEncoder::reset() {
  str->reset();
  count = 0;
}

Project: poppler
File: Stream.cc

void ASCIIHexEncoder::reset() {
  str->reset();
  bufPtr = bufEnd = buf;
  lineLen = 0;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

void ASCII85Encoder::reset() {
  str->reset();
  bufPtr = bufEnd = buf;
  lineLen = 0;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

void RunLengthEncoder::reset() {
  str->reset();
  bufPtr = bufEnd = nextEnd = buf;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

void CMYKGrayEncoder::reset() {
  str->reset();
  bufPtr = bufEnd = buf;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

void RGBGrayEncoder::reset() {
  str->reset();
  bufPtr = bufEnd = buf;
  eof = gFalse;
}

Project: poppler
File: Stream.cc

void DCTStream::restart() {
  int i;

  inputBits = 0;
  restartCtr = restartInterval;
  for (i = 0; i < numComps; ++i) {
    compInfo[i].prevDC = 0;
  }
  eobRun = 0;
}

Project: poppler
File: Stream.cc

void FilterStream::setPos(Guint pos, int dir) {
  error(errInternal, -1, "Internal: called setPos() on FilterStream");
}

Project: poppler
File: Stream.cc

void FileStream::setPos(Guint pos, int dir) {
  Guint size;

  if (dir >= 0) {
#if HAVE_FSEEKO
    fseeko(f, pos, SEEK_SET);
#elif HAVE_FSEEK64
    fseek64(f, pos, SEEK_SET);
#else
    fseek(f, pos, SEEK_SET);
#endif
    bufPos = pos;
  } else {
#if HAVE_FSEEKO
    fseeko(f, 0, SEEK_END);
    size = (Guint)ftello(f);
#elif HAVE_FSEEK64
    fseek64(f, 0, SEEK_END);
    size = (Guint)ftell64(f);
#else
    fseek(f, 0, SEEK_END);
    size = (Guint)ftell(f);
#endif
    if (pos > size)
      pos = (Guint)size;
#if HAVE_FSEEKO
    fseeko(f, -(int)pos, SEEK_END);
    bufPos = (Guint)ftello(f);
#elif HAVE_FSEEK64
    fseek64(f, -(int)pos, SEEK_END);
    bufPos = (Guint)ftell64(f);
#else
    fseek(f, -(int)pos, SEEK_END);
    bufPos = (Guint)ftell(f);
#endif
  }
  bufPtr = bufEnd = buf;
}

Project: poppler
File: Stream.cc

void CachedFileStream::setPos(Guint pos, int dir)
{
  Guint size;

  if (dir >= 0) {
    cc->seek(pos, SEEK_SET);
    bufPos = pos;
  } else {
    cc->seek(0, SEEK_END);
    size = (Guint)cc->tell();

    if (pos > size)
      pos = (Guint)size;

    cc->seek(-(int)pos, SEEK_END);
    bufPos = (Guint)cc->tell();
  }

  bufPtr = bufEnd = buf;
}

Project: poppler
File: Stream.cc

void MemStream::setPos(Guint pos, int dir) {
  Guint i;

  if (dir >= 0) {
    i = pos;
  } else {
    i = start + length - pos;
  }
  if (i < start) {
    i = start;
  } else if (i > start + length) {
    i = start + length;
  }
  bufPtr = buf + i;
}

Project: poppler
File: Stream.cc

void EmbedStream::setPos(Guint pos, int dir) {
  error(errInternal, -1, "Internal: called setPos() on EmbedStream");
}

Project: poppler
File: Stream.cc

void ImageStream::skipLine() {
  str->doGetChars(inputLineSize, inputLine);
}

Project: poppler

GBool FlateStream::startBlock() {
  int blockHdr;
  int c;
  int check;

  if (litCodeTab.codes != fixedLitCodeTab.codes) {
    gfree(litCodeTab.codes);
  }
  litCodeTab.codes = NULL;
  if (distCodeTab.codes != fixedDistCodeTab.codes) {
    gfree(distCodeTab.codes);
  }
  distCodeTab.codes = NULL;

  blockHdr = getCodeWord(3);
  if (blockHdr & 1)
    eof = gTrue;
  blockHdr >>= 1;

  if (blockHdr == 0) {
    compressedBlock = gFalse;
    if ((c = str->getChar()) == EOF)
      goto err;
    blockLen = c & 0xff;
    if ((c = str->getChar()) == EOF)
      goto err;
    blockLen |= (c & 0xff) << 8;
    if ((c = str->getChar()) == EOF)
      goto err;
    check = c & 0xff;
    if ((c = str->getChar()) == EOF)
      goto err;
    check |= (c & 0xff) << 8;
    if (check != (~blockLen & 0xffff))
      error(errSyntaxError, getPos(), "Bad uncompressed block length in flate stream");
    codeBuf = 0;
    codeSize = 0;

  } else if (blockHdr == 1) {
    compressedBlock = gTrue;
    loadFixedCodes();

  } else if (blockHdr == 2) {
    compressedBlock = gTrue;
    if (!readDynamicCodes()) {
      goto err;
    }

  } else {
    goto err;
  }

  endOfBlock = gFalse;
  return gTrue;

err:
  error(errSyntaxError, getPos(), "Bad block header in flate stream");
  endOfBlock = eof = gTrue;
  return gFalse;
}

Project: poppler

void DCTStream::transformDataUnit(Gushort *quantTable,
				  int dataIn[64], Guchar dataOut[64]) {
  int v0, v1, v2, v3, v4, v5, v6, v7, t;
  int *p;
  int i;

  for (i = 0; i < 64; ++i) {
    dataIn[i] *= quantTable[i];
  }

  for (i = 0; i < 64; i += 8) {
    p = dataIn + i;

    if (p[1] == 0 && p[2] == 0 && p[3] == 0 &&
	p[4] == 0 && p[5] == 0 && p[6] == 0 && p[7] == 0) {
      t = (dctSqrt2 * p[0] + 512) >> 10;
      p[0] = t;
      p[1] = t;
      p[2] = t;
      p[3] = t;
      p[4] = t;
      p[5] = t;
      p[6] = t;
      p[7] = t;
      continue;
    }

    v0 = (dctSqrt2 * p[0] + 128) >> 8;
    v1 = (dctSqrt2 * p[4] + 128) >> 8;
    v2 = p[2];
    v3 = p[6];
    v4 = (dctSqrt1d2 * (p[1] - p[7]) + 128) >> 8;
    v7 = (dctSqrt1d2 * (p[1] + p[7]) + 128) >> 8;
    v5 = p[3] << 4;
    v6 = p[5] << 4;

    t = (v0 - v1+ 1) >> 1;
    v0 = (v0 + v1 + 1) >> 1;
    v1 = t;
    t = (v2 * dctSin6 + v3 * dctCos6 + 128) >> 8;
    v2 = (v2 * dctCos6 - v3 * dctSin6 + 128) >> 8;
    v3 = t;
    t = (v4 - v6 + 1) >> 1;
    v4 = (v4 + v6 + 1) >> 1;
    v6 = t;
    t = (v7 + v5 + 1) >> 1;
    v5 = (v7 - v5 + 1) >> 1;
    v7 = t;

    t = (v0 - v3 + 1) >> 1;
    v0 = (v0 + v3 + 1) >> 1;
    v3 = t;
    t = (v1 - v2 + 1) >> 1;
    v1 = (v1 + v2 + 1) >> 1;
    v2 = t;
    t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12;
    v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12;
    v7 = t;
    t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12;
    v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12;
    v6 = t;

    p[0] = v0 + v7;
    p[7] = v0 - v7;
    p[1] = v1 + v6;
    p[6] = v1 - v6;
    p[2] = v2 + v5;
    p[5] = v2 - v5;
    p[3] = v3 + v4;
    p[4] = v3 - v4;
  }

  for (i = 0; i < 8; ++i) {
    p = dataIn + i;

    if (p[1*8] == 0 && p[2*8] == 0 && p[3*8] == 0 &&
	p[4*8] == 0 && p[5*8] == 0 && p[6*8] == 0 && p[7*8] == 0) {
      t = (dctSqrt2 * dataIn[i+0] + 8192) >> 14;
      p[0*8] = t;
      p[1*8] = t;
      p[2*8] = t;
      p[3*8] = t;
      p[4*8] = t;
      p[5*8] = t;
      p[6*8] = t;
      p[7*8] = t;
      continue;
    }

    v0 = (dctSqrt2 * p[0*8] + 2048) >> 12;
    v1 = (dctSqrt2 * p[4*8] + 2048) >> 12;
    v2 = p[2*8];
    v3 = p[6*8];
    v4 = (dctSqrt1d2 * (p[1*8] - p[7*8]) + 2048) >> 12;
    v7 = (dctSqrt1d2 * (p[1*8] + p[7*8]) + 2048) >> 12;
    v5 = p[3*8];
    v6 = p[5*8];

    t = (v0 - v1 + 1) >> 1;
    v0 = (v0 + v1 + 1) >> 1;
    v1 = t;
    t = (v2 * dctSin6 + v3 * dctCos6 + 2048) >> 12;
    v2 = (v2 * dctCos6 - v3 * dctSin6 + 2048) >> 12;
    v3 = t;
    t = (v4 - v6 + 1) >> 1;
    v4 = (v4 + v6 + 1) >> 1;
    v6 = t;
    t = (v7 + v5 + 1) >> 1;
    v5 = (v7 - v5 + 1) >> 1;
    v7 = t;

    t = (v0 - v3 + 1) >> 1;
    v0 = (v0 + v3 + 1) >> 1;
    v3 = t;
    t = (v1 - v2 + 1) >> 1;
    v1 = (v1 + v2 + 1) >> 1;
    v2 = t;
    t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12;
    v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12;
    v7 = t;
    t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12;
    v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12;
    v6 = t;

    p[0*8] = v0 + v7;
    p[7*8] = v0 - v7;
    p[1*8] = v1 + v6;
    p[6*8] = v1 - v6;
    p[2*8] = v2 + v5;
    p[5*8] = v2 - v5;
    p[3*8] = v3 + v4;
    p[4*8] = v3 - v4;
  }

  for (i = 0; i < 64; ++i) {
    dataOut[i] = dctClip[dctClipOffset + 128 + ((dataIn[i] + 8) >> 4)];
  }
}

Project: poppler
File: Stream.cc

void CCITTFaxStream::unfilteredReset() {
  ccittReset(gTrue);
}

Project: poppler
File: Stream.cc

void DCTStream::unfilteredReset() {
  dctReset(gTrue);
}

Project: poppler
File: Stream.cc

void FlateStream::unfilteredReset() {
  flateReset(gTrue);
}

Project: poppler
File: Stream.cc

ASCII85Encoder::~ASCII85Encoder() {
  if (str->isEncoder())
    delete str;
}

Project: poppler
File: Stream.cc

ASCII85Stream::~ASCII85Stream() {
  delete str;
}

Project: poppler
File: Stream.cc

ASCIIHexEncoder::~ASCIIHexEncoder() {
  if (str->isEncoder()) {
    delete str;
  }
}

Project: poppler
File: Stream.cc

BaseStream::~BaseStream() {
  dict.free();
}

Project: poppler
File: Stream.cc

BufStream::~BufStream() {
  gfree(buf);
  delete str;
}

Project: poppler
File: Stream.cc

CCITTFaxStream::~CCITTFaxStream() {
  delete str;
  gfree(refLine);
  gfree(codingLine);
}

Project: poppler
File: Stream.cc

CachedFileStream::~CachedFileStream()
{
  close();
  cc->decRefCnt();
}

Project: poppler
File: Stream.cc

DCTStream::~DCTStream() {
  close();
  delete str;
}

Project: poppler
File: Stream.cc

EOFStream::~EOFStream() {
  delete str;
}

Project: poppler
File: Stream.cc

EmbedStream::~EmbedStream() {
}

Project: poppler
File: Stream.cc

FileStream::~FileStream() {
  close();
}

Project: poppler
File: Stream.cc

FilterStream::~FilterStream() {
}

Project: poppler
File: Stream.cc

FixedLengthEncoder::~FixedLengthEncoder() {
  if (str->isEncoder())
    delete str;
}

Project: poppler
File: Stream.cc

FlateStream::~FlateStream() {
  if (litCodeTab.codes != fixedLitCodeTab.codes) {
    gfree(litCodeTab.codes);
  }
  if (distCodeTab.codes != fixedDistCodeTab.codes) {
    gfree(distCodeTab.codes);
  }
  if (pred) {
    delete pred;
  }
  delete str;
}

Project: poppler
File: Stream.cc

ImageStream::~ImageStream() {
  if (imgLine != (Guchar *)inputLine) {
    gfree(imgLine);
  }
  gfree(inputLine);
}

Project: poppler
File: Stream.cc

LZWStream::~LZWStream() {
  if (pred) {
    delete pred;
  }
  delete str;
}

Project: poppler
File: Stream.cc

MemStream::~MemStream() {
  if (needFree) {
    gfree(buf);
  }
}

Project: poppler
File: Stream.cc

OutStream::~OutStream ()
{
}

Project: poppler
File: Stream.cc

RGBGrayEncoder::~RGBGrayEncoder() {
  if (str->isEncoder())
    delete str;
}

Project: poppler
File: Stream.cc

RunLengthEncoder::~RunLengthEncoder() {
  if (str->isEncoder())
    delete str;
}

Project: poppler
File: Stream.cc

RunLengthStream::~RunLengthStream() {
  delete str;
}

Project: poppler
File: Stream.cc

Stream::~Stream() {
}