60 lines
1.6 KiB
Java
60 lines
1.6 KiB
Java
package ar.com.hjg.pngj;
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/**
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* Packs information of current row. Only used internally
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*/
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class RowInfo {
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public final ImageInfo imgInfo;
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public final Deinterlacer deinterlacer;
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public final boolean imode; // Interlaced
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int dY; // current step and offset (in pixels)
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int dX;
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int oY;
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int oX;
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int rowNseq; // row number (from 0) in sequential read order
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int rowNreal; // row number in the real image
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int rowNsubImg; // current row in the virtual subsampled image; this increments (by 1) from 0 to
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// rows/dy 7 times
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int rowsSubImg; // size of current subimage , in pixels
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int colsSubImg;
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int bytesRow;
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int pass; // 1-7
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byte[] buf; // non-deep copy
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int buflen; // valid bytes in buffer (include filter byte)
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public RowInfo(ImageInfo imgInfo, Deinterlacer deinterlacer) {
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this.imgInfo = imgInfo;
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this.deinterlacer = deinterlacer;
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this.imode = deinterlacer != null;
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}
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void update(int rowseq) {
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rowNseq = rowseq;
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if (imode) {
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pass = deinterlacer.getPass();
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dX = deinterlacer.dX;
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dY = deinterlacer.dY;
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oX = deinterlacer.oX;
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oY = deinterlacer.oY;
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rowNreal = deinterlacer.getCurrRowReal();
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rowNsubImg = deinterlacer.getCurrRowSubimg();
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rowsSubImg = deinterlacer.getRows();
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colsSubImg = deinterlacer.getCols();
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bytesRow = (imgInfo.bitspPixel * colsSubImg + 7) / 8;
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} else {
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pass = 1;
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dX = dY = 1;
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oX = oY = 0;
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rowNreal = rowNsubImg = rowseq;
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rowsSubImg = imgInfo.rows;
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colsSubImg = imgInfo.cols;
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bytesRow = imgInfo.bytesPerRow;
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}
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}
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void updateBuf(byte[] buf, int buflen) {
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this.buf = buf;
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this.buflen = buflen;
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}
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}
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