invwtadapter.java

jpeg2000算法实现

    public int getCompWidth(int c) {
	// Find tile-component resolution level
	int tIdx = getTileIdx();
	int rl = ((Integer)decSpec.dls.getTileCompVal(tIdx,c)).intValue()
	    -decSpec.dls.getMin()+reslvl;
        return mressrc.getCompWidth(c,rl);
    }

    /**
     * Returns the height in pixels of the specified component in the
     * current tile.
     *
     * <P>This default implementation returns the value of the source at the
     * current reconstruction resolution level.
     *
     * @param c The index of the component, from 0 to N-1.
     *
     * @return The height in pixels of component <tt>n</tt> in the current
     * tile.
     *
     *
     * */
    public int getCompHeight(int c) {
	// Find tile-component resolution level
	int tIdx = getTileIdx();
	int rl = ((Integer)decSpec.dls.getTileCompVal(tIdx,c)).intValue()
	    -decSpec.dls.getMin()+reslvl;
        return mressrc.getCompHeight(c,rl);
    }

    /**
     * Returns the width in pixels of the specified component in the
     * overall image.
     *
     * <P>This default implementation returns the value of the source at the
     * current reconstruction resolution level.
     *
     * @param c The index of the component, from 0 to N-1.
     *
     * @return The width in pixels of component <tt>c</tt> in the overall
     * image.
     *
     *
     * */
    public int getCompImgWidth(int c) {
	// Find component resolution level
	int rl = decSpec.dls.getMinInComp(c)-decSpec.dls.getMin()+reslvl;
        return mressrc.getCompImgWidth(c,rl);
    }

    /**
     * Returns the height in pixels of the specified component in the
     * overall image.
     *
     * <P>This default implementation returns the value of the source at the
     * current reconstruction resolution level.
     *
     * @param c The index of the component, from 0 to N-1.
     *
     * @return The height in pixels of component <tt>n</tt> in the overall
     * image.
     *
     *
     * */
    public int getCompImgHeight(int c) {
	// Find component resolution level
	int rl = decSpec.dls.getMinInComp(c)-decSpec.dls.getMin()+reslvl;
        return mressrc.getCompImgHeight(c,rl);
    }

    /**
     * Changes the current tile, given the new indices. An
     * IllegalArgumentException is thrown if the coordinates do not
     * correspond to a valid tile.
     *
     * <P>This default implementation calls the same method on the source.
     *
     * @param x The horizontal index of the tile.
     *
     * @param y The vertical index of the new tile.
     *
     *
     * */
    public void setTile(int x, int y) {
        mressrc.setTile(x,y);
    }

    /**
     * Advances to the next tile, in standard scan-line order (by rows
     * then columns). An NoNextElementException is thrown if the
     * current tile is the last one (i.e. there is no next tile).
     *
     * <P>This default implementation calls the same method on the source.
     *
     *
     * */
    public void nextTile() {
        mressrc.nextTile();
    }

    /**
     * Returns the indixes of the current tile. These are the
     * horizontal and vertical indexes of the current tile.
     *
     * <P>This default implementation returns the value of the source.
     *
     * @param co If not null this object is used to return the
     * information. If null a new one is created and returned.
     *
     * @return The current tile's indices (vertical and horizontal
     * indexes).
     *
     *
     * */
    public Coord getTile(Coord co) {
        return mressrc.getTile(co);
    }

    /**
     * Returns the index of the current tile, relative to a standard
     * scan-line order.
     *
     * <P>This default implementation returns the value of the source.
     *
     * @return The current tile's index (starts at 0).
     *
     *
     * */
    public int getTileIdx() {
        return mressrc.getTileIdx();
    }

    /**
     * Returns the horizontal and vertical offset of the upper-left corner of
     * the current tile, in the specified component, relative to the canvas
     * origin, in the component coordinates (not in the reference grid
     * coordinates). These are the coordinates of the current tile's (not
     * active tile) upper-left corner relative to the canvas.
     *
     * <P>This default implementation returns the value of the source at the
     * current reconstruction resolution level.
     *
     * @param co If not null the object is used to return the values,
     * if null a new one is created and returned.
     *
     * @param c The index of the component (between 0 and N-1)
     *
     * @return The horizontal and vertical offsets of the upper-left
     * corner of the current tile, for the specified component,
     * relative to the canvas origin, in the component coordinates.
     *
     *
     * */
    public Coord getTileOff(Coord co, int c) {
        return mressrc.getTileOff(co,c,reslvl);
    }

    /**
     * Returns the horizontal coordinate of the upper-left corner of the
     * active tile, with respect to the canvas origin, in the component
     * coordinates, for the specified component.
     *
     * <P>This default implementation returns the value of the source at the
     * current reconstruction resolution level.
     *
     * @param c The index of the component (between 0 and N-1)
     *
     * @return The horizontal coordinate of the upper-left corner of the active
     * tile, with respect to the canvas origin, for component 'n', in the
     * component coordinates.
     *
     *
     * */
    public int getULX(int c) {
	// Find component resolution level
	int tIdx = getTileIdx();
	int rl = ((Integer)decSpec.dls.getTileCompVal(tIdx,c)).intValue()
	    -decSpec.dls.getMin()+reslvl;
        return mressrc.getULX(c,rl);
    }

    /**
     * Returns the vertical coordinate of the upper-left corner of the
     * active tile, with respect to the canvas origin, in the component
     * coordinates, for the specified component.
     *
     * <P>This default implementation returns the value of the source at the
     * current reconstruction resolution level.
     *
     * @param c The index of the component (between 0 and N-1)
     *
     * @return The vertical coordinate of the upper-left corner of the active
     * tile, with respect to the canvas origin, for component 'n', in the
     * component coordinates.
     *
     *
     * */
    public int getULY(int c) {
	// Find component resolution level
	int tIdx = getTileIdx();
	int rl = ((Integer)decSpec.dls.getTileCompVal(tIdx,c)).intValue()
	    -decSpec.dls.getMin()+reslvl;
        return mressrc.getULY(c,rl);
    }

    /**
     * Returns the horizontal coordinate of the image origin, the top-left
     * corner, in the canvas system, on the reference grid.
     *
     * <P>This default implementation returns the value of the source at the
     * current reconstruction resolution level.
     *
     * @return The horizontal coordinate of the image origin in the canvas
     * system, on the reference grid.
     *
     *
     * */
    public int getImgULX() {
        return mressrc.getImgULX(reslvl);
    }

    /**
     * Returns the vertical coordinate of the image origin, the top-left
     * corner, in the canvas system, on the reference grid.
     *
     * <P>This default implementation returns the value of the source at the
     * current reconstruction resolution level.
     *
     * @return The vertical coordinate of the image origin in the canvas
     * system, on the reference grid.
     *
     *
     * */
    public int getImgULY() {
        return mressrc.getImgULY(reslvl);
    }

    /**
     * Returns the number of tiles in the horizontal and vertical directions.
     *
     * <P>This default implementation returns the value of the source.
     *
     * @param co If not null this object is used to return the
     * information. If null a new one is created and returned.
     *
     * @return The number of tiles in the horizontal (Coord.x) and
     * vertical (Coord.y) directions.
     *
     *
     * */
    public Coord getNumTiles(Coord co) {
        return mressrc.getNumTiles(co);
    }

    /**
     * Returns the total number of tiles in the image.
     *
     * <P>This default implementation returns the value of the source.
     *
     * @return The total number of tiles in the image.
     *
     *
     * */
    public int getNumTiles() {
        return mressrc.getNumTiles();
    }
}