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Diffstat (limited to 'pdf/xpdf/JPXStream.h')
| -rw-r--r-- | pdf/xpdf/JPXStream.h | 340 |
1 files changed, 0 insertions, 340 deletions
diff --git a/pdf/xpdf/JPXStream.h b/pdf/xpdf/JPXStream.h deleted file mode 100644 index eb84fe6..0000000 --- a/pdf/xpdf/JPXStream.h +++ /dev/null @@ -1,340 +0,0 @@ -//======================================================================== -// -// JPXStream.h -// -// Copyright 2002-2003 Glyph & Cog, LLC -// -//======================================================================== - -#ifndef JPXSTREAM_H -#define JPXSTREAM_H - -#include <aconf.h> - -#ifdef USE_GCC_PRAGMAS -#pragma interface -#endif - -#include "gtypes.h" -#include "Object.h" -#include "Stream.h" - -class JArithmeticDecoderStats; - -//------------------------------------------------------------------------ - -enum JPXColorSpaceType { - jpxCSBiLevel = 0, - jpxCSYCbCr1 = 1, - jpxCSYCbCr2 = 3, - jpxCSYCBCr3 = 4, - jpxCSPhotoYCC = 9, - jpxCSCMY = 11, - jpxCSCMYK = 12, - jpxCSYCCK = 13, - jpxCSCIELab = 14, - jpxCSsRGB = 16, - jpxCSGrayscale = 17, - jpxCSBiLevel2 = 18, - jpxCSCIEJab = 19, - jpxCSCISesRGB = 20, - jpxCSROMMRGB = 21, - jpxCSsRGBYCbCr = 22, - jpxCSYPbPr1125 = 23, - jpxCSYPbPr1250 = 24 -}; - -struct JPXColorSpec { - Guint meth; // method - int prec; // precedence - union { - struct { - JPXColorSpaceType type; // color space type - union { - struct { - Guint rl, ol, ra, oa, rb, ob, il; - } cieLab; - }; - } enumerated; - }; -}; - -//------------------------------------------------------------------------ - -struct JPXPalette { - Guint nEntries; // number of entries in the palette - Guint nComps; // number of components in each entry - Guint *bpc; // bits per component, for each component - int *c; // color data: - // c[i*nComps+j] = entry i, component j -}; - -//------------------------------------------------------------------------ - -struct JPXCompMap { - Guint nChannels; // number of channels - Guint *comp; // codestream components mapped to each channel - Guint *type; // 0 for direct use, 1 for palette mapping - Guint *pComp; // palette components to use -}; - -//------------------------------------------------------------------------ - -struct JPXChannelDefn { - Guint nChannels; // number of channels - Guint *idx; // channel indexes - Guint *type; // channel types - Guint *assoc; // channel associations -}; - -//------------------------------------------------------------------------ - -struct JPXTagTreeNode { - GBool finished; // true if this node is finished - Guint val; // current value -}; - -//------------------------------------------------------------------------ - -struct JPXCoeff { - Gushort flags; // flag bits - Gushort len; // number of significant bits in mag - Guint mag; // magnitude value -}; - -// coefficient flags -#define jpxCoeffSignificantB 0 -#define jpxCoeffTouchedB 1 -#define jpxCoeffFirstMagRefB 2 -#define jpxCoeffSignB 7 -#define jpxCoeffSignificant (1 << jpxCoeffSignificantB) -#define jpxCoeffTouched (1 << jpxCoeffTouchedB) -#define jpxCoeffFirstMagRef (1 << jpxCoeffFirstMagRefB) -#define jpxCoeffSign (1 << jpxCoeffSignB) - -//------------------------------------------------------------------------ - -struct JPXCodeBlock { - //----- size - Guint x0, y0, x1, y1; // bounds - - //----- persistent state - GBool seen; // true if this code-block has already - // been seen - Guint lBlock; // base number of bits used for pkt data length - Guint nextPass; // next coding pass - - //---- info from first packet - Guint nZeroBitPlanes; // number of zero bit planes - - //----- info for the current packet - Guint included; // code-block inclusion in this packet: - // 0=not included, 1=included - Guint nCodingPasses; // number of coding passes in this pkt - Guint dataLen; // pkt data length - - //----- coefficient data - JPXCoeff *coeffs; // the coefficients - JArithmeticDecoderStats // arithmetic decoder stats - *stats; -}; - -//------------------------------------------------------------------------ - -struct JPXSubband { - //----- computed - Guint x0, y0, x1, y1; // bounds - Guint nXCBs, nYCBs; // number of code-blocks in the x and y - // directions - - //----- tag trees - Guint maxTTLevel; // max tag tree level - JPXTagTreeNode *inclusion; // inclusion tag tree for each subband - JPXTagTreeNode *zeroBitPlane; // zero-bit plane tag tree for each - // subband - - //----- children - JPXCodeBlock *cbs; // the code-blocks (len = nXCBs * nYCBs) -}; - -//------------------------------------------------------------------------ - -struct JPXPrecinct { - //----- computed - Guint x0, y0, x1, y1; // bounds of the precinct - - //----- children - JPXSubband *subbands; // the subbands -}; - -//------------------------------------------------------------------------ - -struct JPXResLevel { - //----- from the COD and COC segments (main and tile) - Guint precinctWidth; // log2(precinct width) - Guint precinctHeight; // log2(precinct height) - - //----- computed - Guint x0, y0, x1, y1; // bounds of the tile-comp (for this res level) - Guint bx0[3], by0[3], // subband bounds - bx1[3], by1[3]; - - //---- children - JPXPrecinct *precincts; // the precincts -}; - -//------------------------------------------------------------------------ - -struct JPXTileComp { - //----- from the SIZ segment - GBool sgned; // 1 for signed, 0 for unsigned - Guint prec; // precision, in bits - Guint hSep; // horizontal separation of samples - Guint vSep; // vertical separation of samples - - //----- from the COD and COC segments (main and tile) - Guint style; // coding style parameter (Scod / Scoc) - Guint nDecompLevels; // number of decomposition levels - Guint codeBlockW; // log2(code-block width) - Guint codeBlockH; // log2(code-block height) - Guint codeBlockStyle; // code-block style - Guint transform; // wavelet transformation - - //----- from the QCD and QCC segments (main and tile) - Guint quantStyle; // quantization style - Guint *quantSteps; // quantization step size for each subband - Guint nQuantSteps; // number of entries in quantSteps - - //----- computed - Guint x0, y0, x1, y1; // bounds of the tile-comp, in ref coords - Guint cbW; // code-block width - Guint cbH; // code-block height - - //----- image data - int *data; // the decoded image data - int *buf; // intermediate buffer for the inverse - // transform - - //----- children - JPXResLevel *resLevels; // the resolution levels - // (len = nDecompLevels + 1) -}; - -//------------------------------------------------------------------------ - -struct JPXTile { - //----- from the COD segments (main and tile) - Guint progOrder; // progression order - Guint nLayers; // number of layers - Guint multiComp; // multiple component transformation - - //----- computed - Guint x0, y0, x1, y1; // bounds of the tile, in ref coords - Guint maxNDecompLevels; // max number of decomposition levels used - // in any component in this tile - - //----- progression order loop counters - Guint comp; // component - Guint res; // resolution level - Guint precinct; // precinct - Guint layer; // layer - - //----- children - JPXTileComp *tileComps; // the tile-components (len = JPXImage.nComps) -}; - -//------------------------------------------------------------------------ - -struct JPXImage { - //----- from the SIZ segment - Guint xSize, ySize; // size of reference grid - Guint xOffset, yOffset; // image offset - Guint xTileSize, yTileSize; // size of tiles - Guint xTileOffset, // offset of first tile - yTileOffset; - Guint nComps; // number of components - - //----- computed - Guint nXTiles; // number of tiles in x direction - Guint nYTiles; // number of tiles in y direction - - //----- children - JPXTile *tiles; // the tiles (len = nXTiles * nYTiles) -}; - -//------------------------------------------------------------------------ - -class JPXStream: public FilterStream { -public: - - JPXStream(Stream *strA); - virtual ~JPXStream(); - virtual StreamKind getKind() { return strJPX; } - virtual void reset(); - virtual int getChar(); - virtual int lookChar(); - virtual GString *getPSFilter(int psLevel, char *indent); - virtual GBool isBinary(GBool last = gTrue); - -private: - - void fillReadBuf(); - GBool readBoxes(); - GBool readColorSpecBox(Guint dataLen); - GBool readCodestream(Guint len); - GBool readTilePart(); - GBool readTilePartData(Guint tileIdx, - Guint tilePartLen, GBool tilePartToEOC); - GBool readCodeBlockData(JPXTileComp *tileComp, - JPXResLevel *resLevel, - JPXPrecinct *precinct, - JPXSubband *subband, - Guint res, Guint sb, - JPXCodeBlock *cb); - void inverseTransform(JPXTileComp *tileComp); - void inverseTransformLevel(JPXTileComp *tileComp, - Guint r, JPXResLevel *resLevel, - Guint nx0, Guint ny0, - Guint nx1, Guint ny1); - void inverseTransform1D(JPXTileComp *tileComp, - int *data, Guint stride, - Guint i0, Guint i1); - GBool inverseMultiCompAndDC(JPXTile *tile); - GBool readBoxHdr(Guint *boxType, Guint *boxLen, Guint *dataLen); - int readMarkerHdr(int *segType, Guint *segLen); - GBool readUByte(Guint *x); - GBool readByte(int *x); - GBool readUWord(Guint *x); - GBool readULong(Guint *x); - GBool readNBytes(int nBytes, GBool signd, int *x); - GBool readBits(int nBits, Guint *x); - void clearBitBuf(); - - Guint nComps; // number of components - Guint *bpc; // bits per component, for each component - Guint width, height; // image size - GBool haveImgHdr; // set if a JP2/JPX image header has been - // found - JPXColorSpec cs; // color specification - GBool haveCS; // set if a color spec has been found - JPXPalette palette; // the palette - GBool havePalette; // set if a palette has been found - JPXCompMap compMap; // the component mapping - GBool haveCompMap; // set if a component mapping has been found - JPXChannelDefn channelDefn; // channel definition - GBool haveChannelDefn; // set if a channel defn has been found - - JPXImage img; // JPEG2000 decoder data - Guint bitBuf; // buffer for bit reads - int bitBufLen; // number of bits in bitBuf - GBool bitBufSkip; // true if next bit should be skipped - // (for bit stuffing) - Guint byteCount; // number of bytes read since last call - // to clearBitBuf - - Guint curX, curY, curComp; // current position for lookChar/getChar - Guint readBuf; // read buffer - Guint readBufLen; // number of valid bits in readBuf -}; - -#endif |