diff options
Diffstat (limited to 'xpdf/JPXStream.h')
| -rw-r--r-- | xpdf/JPXStream.h | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/xpdf/JPXStream.h b/xpdf/JPXStream.h index 2c46ca0..d00a55e 100644 --- a/xpdf/JPXStream.h +++ b/xpdf/JPXStream.h @@ -199,7 +199,7 @@ struct JPXTileComp { //----- computed Guint x0, y0, x1, y1; // bounds of the tile-comp, in ref coords - Guint w; // x1 - x0 + Guint w, h; // data size = {x1 - x0, y1 - y0} >> reduction Guint cbW; // code-block width Guint cbH; // code-block height @@ -234,6 +234,9 @@ struct JPXTile { Guint precinct; // precinct Guint layer; // layer + //----- tile part info + Guint nextTilePart; // next expected tile-part + //----- children JPXTileComp *tileComps; // the tile-components (len = JPXImage.nComps) }; @@ -247,6 +250,11 @@ struct JPXImage { Guint xTileSize, yTileSize; // size of tiles Guint xTileOffset, // offset of first tile yTileOffset; + Guint xSizeR, ySizeR; // size of reference grid >> reduction + Guint xOffsetR, yOffsetR; // image offset >> reduction + Guint xTileSizeR, yTileSizeR; // size of tiles >> reduction + Guint xTileOffsetR, // offset of first tile >> reduction + yTileOffsetR; Guint nComps; // number of components //----- computed @@ -259,6 +267,14 @@ struct JPXImage { //------------------------------------------------------------------------ +enum JPXDecodeResult { + jpxDecodeOk, + jpxDecodeNonFatalError, + jpxDecodeFatalError +}; + +//------------------------------------------------------------------------ + class JPXStream: public FilterStream { public: @@ -273,14 +289,15 @@ public: virtual GBool isBinary(GBool last = gTrue); virtual void getImageParams(int *bitsPerComponent, StreamColorSpaceMode *csMode); + void reduceResolution(int reductionA) { reduction = reductionA; } private: void fillReadBuf(); void getImageParams2(int *bitsPerComponent, StreamColorSpaceMode *csMode); - GBool readBoxes(); + JPXDecodeResult readBoxes(); GBool readColorSpecBox(Guint dataLen); - GBool readCodestream(Guint len); + JPXDecodeResult readCodestream(Guint len); GBool readTilePart(); GBool readTilePartData(Guint tileIdx, Guint tilePartLen, GBool tilePartToEOC); @@ -314,6 +331,7 @@ private: Guint nComps; // number of components Guint *bpc; // bits per component, for each component Guint width, height; // image size + int reduction; // log2(reduction in resolution) GBool haveImgHdr; // set if a JP2/JPX image header has been // found JPXColorSpec cs; // color specification |