Example usage for com.google.gwt.typedarrays.shared Uint8Array set

Introduction

In this page you can find the example usage for com.google.gwt.typedarrays.shared Uint8Array set.

Prototype

void set(short[] array, int offset);

Source Link

Document

Set multiple elements in this view from an array, storing starting at the requested offset.

Usage

From source file:com.lizardtech.djvu.IWMap.java

License:Open Source License

/**
 * DOCUMENT ME!/*from   w ww  .  j  a  v a2 s. c o m*/
 *
 * @param index DOCUMENT ME!
 * @param img8 DOCUMENT ME!
 * @param rowsize DOCUMENT ME!
 * @param pixsep DOCUMENT ME!
 * @param fast DOCUMENT ME!
 */
void image(int index, final Uint8Array img8, int rowsize, int pixsep, boolean fast) {
    final Int16Array data16 = TypedArrays.createInt16Array(bw * bh);
    final Int16Array liftblock = TypedArrays.createInt16Array(1024);
    int pidx = 0;
    IWBlock[] block = blocks;
    int blockidx = 0;
    int ppidx = 0;

    for (int i = 0; i < bh; i += 32, pidx += (32 * bw)) {
        for (int j = 0; j < bw; j += 32) {
            block[blockidx].write_liftblock(liftblock, 0, 64);
            blockidx++;

            ppidx = pidx + j;

            for (int ii = 0, p1idx = 0; ii++ < 32; p1idx += 32, ppidx += bw) {
                Int16Array src = liftblock.subarray(p1idx, p1idx + 32);
                data16.set(src, ppidx);
            }
        }
    }

    if (fast) {
        backward(data16, 0, iw, ih, bw, 32, 2);
        pidx = 0;

        for (int i = 0; i < bh; i += 2, pidx += bw) {
            for (int jj = 0; jj < bw; jj += 2, pidx += 2) {
                short s = data16.get(pidx);
                data16.set(pidx + bw, s);
                data16.set(pidx + bw + 1, s);
                data16.set(pidx + 1, s);
            }
        }
    } else {
        backward(data16, 0, iw, ih, bw, 32, 1);
    }

    pidx = 0;

    for (int i = 0, rowidx = index; i++ < ih; rowidx += rowsize, pidx += bw) {
        for (int j = 0, pixidx = rowidx; j < iw; pixidx += pixsep) {
            int x = (data16.get(pidx + (j++)) + 32) >> 6;

            if (x < -128) {
                x = -128;
            } else if (x > 127) {
                x = 127;
            }

            img8.set(pixidx, x);
        }
    }
}

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From source file:com.lizardtech.djvu.IWMap.java

License:Open Source License

/**
 * DOCUMENT ME!/*from   ww w  . j  av  a 2 s . c om*/
 *
 * @param subsample DOCUMENT ME!
 * @param rect DOCUMENT ME!
 * @param index DOCUMENT ME!
 * @param img8 DOCUMENT ME!
 * @param rowsize DOCUMENT ME!
 * @param pixsep DOCUMENT ME!
 * @param fast DOCUMENT ME!
 *
 * @throws IllegalArgumentException DOCUMENT ME!
 */
void image(int subsample, GRect rect, int index, final Uint8Array img8, int rowsize, int pixsep, boolean fast) {
    int nlevel = 0;

    while ((nlevel < 5) && ((32 >> nlevel) > subsample)) {
        nlevel++;
    }

    final int boxsize = 1 << nlevel;

    if (subsample != (32 >> nlevel)) {
        throw new IllegalArgumentException("(IWMap::image) Unsupported subsampling factor");
    }

    if (rect.isEmpty()) {
        throw new IllegalArgumentException("(IWMap::image) GRect is empty");
    }

    GRect irect = new GRect(0, 0, ((iw + subsample) - 1) / subsample, ((ih + subsample) - 1) / subsample);

    if ((rect.xmin < 0) || (rect.ymin < 0) || (rect.xmax > irect.xmax) || (rect.ymax > irect.ymax)) {
        throw new IllegalArgumentException("(IWMap::image) GRect is out of bounds: " + rect.xmin + ","
                + rect.ymin + "," + rect.xmax + "," + rect.ymax + "," + irect.xmax + "," + irect.ymax);
    }

    GRect[] needed = new GRect[8];
    GRect[] recomp = new GRect[8];

    for (int i = 0; i < 8;) {
        needed[i] = new GRect();
        recomp[i++] = new GRect();
    }

    int r = 1;
    needed[nlevel] = new GRect(rect);
    recomp[nlevel] = new GRect(rect);

    for (int i = nlevel - 1; i >= 0; i--) {
        needed[i] = recomp[i + 1];
        needed[i].inflate(3 * r, 3 * r);
        needed[i].intersect(needed[i], irect);
        r += r;
        recomp[i].xmin = ((needed[i].xmin + r) - 1) & ~(r - 1);
        recomp[i].xmax = needed[i].xmax & ~(r - 1);
        recomp[i].ymin = ((needed[i].ymin + r) - 1) & ~(r - 1);
        recomp[i].ymax = needed[i].ymax & ~(r - 1);
    }

    GRect work = new GRect();
    work.xmin = needed[0].xmin & ~(boxsize - 1);
    work.ymin = needed[0].ymin & ~(boxsize - 1);
    work.xmax = ((needed[0].xmax - 1) & ~(boxsize - 1)) + boxsize;
    work.ymax = ((needed[0].ymax - 1) & ~(boxsize - 1)) + boxsize;

    final int dataw = work.width();
    final Int16Array data = TypedArrays.createInt16Array(dataw * work.height());
    int blkw = bw >> 5;
    int lblock = ((work.ymin >> nlevel) * blkw) + (work.xmin >> nlevel);

    final Int16Array liftblock = TypedArrays.createInt16Array(1024);

    for (int by = work.ymin, ldata = 0; by < work.ymax; by += boxsize, ldata += (dataw << nlevel), lblock += blkw) {
        for (int bx = work.xmin, bidx = lblock, rdata = ldata; bx < work.xmax; bx += boxsize, bidx++, rdata += boxsize) {
            IWBlock block = blocks[bidx];
            int mlevel = nlevel;

            if ((nlevel > 2) && (((bx + 31) < needed[2].xmin) || (bx > needed[2].xmax)
                    || ((by + 31) < needed[2].ymin) || (by > needed[2].ymax))) {
                mlevel = 2;
            }

            final int bmax = ((1 << (mlevel + mlevel)) + 15) >> 4;
            final int ppinc = 1 << (nlevel - mlevel);
            final int ppmod1 = dataw << (nlevel - mlevel);
            final int ttmod0 = 32 >> mlevel;
            final int ttmod1 = ttmod0 << 5;
            block.write_liftblock(liftblock, 0, bmax);

            for (int ii = 0, tt = 0, pp = rdata; ii < boxsize; ii += ppinc, pp += ppmod1, tt += (ttmod1 - 32)) {
                for (int jj = 0; jj < boxsize; jj += ppinc, tt += ttmod0) {
                    data.set(pp + jj, liftblock.get(tt));
                }
            }
        }
    }

    r = boxsize;

    for (int i = 0; i < nlevel; i++) {
        GRect comp = needed[i];
        comp.xmin = comp.xmin & ~(r - 1);
        comp.ymin = comp.ymin & ~(r - 1);
        comp.translate(-work.xmin, -work.ymin);

        if (fast && (i >= 4)) {
            workaround(dataw, data, comp);

            break;
        }

        backward(data, (comp.ymin * dataw) + comp.xmin, comp.width(), comp.height(), dataw, r, r >> 1);
        r >>= 1;
    }

    GRect nrect = new GRect(rect);
    nrect.translate(-work.xmin, -work.ymin);

    for (int i = nrect.ymin, pidx = (nrect.ymin
            * dataw), ridx = index; i++ < nrect.ymax; ridx += rowsize, pidx += dataw) {
        for (int j = nrect.xmin, pixidx = ridx; j < nrect.xmax; j++, pixidx += pixsep) {
            int x = (data.get(pidx + j) + 32) >> 6;

            if (x < -128) {
                x = -128;
            } else if (x > 127) {
                x = 127;
            }

            img8.set(pixidx, x);
        }
    }
}

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From source file:org.cruxframework.crux.core.client.utils.FileUtils.java

License:Apache License

/**
 * Create a new Blob from the dataURI string
 * @param dataURI/*w ww . j  a  va 2  s . co  m*/
 * @return
 */
public static Blob fromDataURI(String dataURI) {
    String[] strings = dataURI.split(",");

    String byteString = getByteString(strings[1], strings[0]);
    String mimeString = strings[0].split(":")[1].split(";")[0];

    int length = byteString.length();
    ArrayBuffer ab = ArrayBufferNative.create(length);
    Uint8Array ia = Uint8ArrayNative.create(ab);

    for (int i = 0; i < length; i++) {
        ia.set(i, StringUtils.charCodeAt(byteString, i));
    }

    return Blob.createIfSupported(ab, mimeString);
}

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From source file:org.plugination.connect.html.HtmlWebSocket.java

License:Apache License

@Override
public void send(ByteBuffer data) {
    int limit = data.limit();
    ArrayBuffer buffer = TypedArrays.createArrayBuffer(limit);
    Uint8Array arrayBuffer = TypedArrays.createUint8Array(buffer);
    for (int i = 0; i < limit; i++) {
        arrayBuffer.set(i, data.get(i));
    }//from www  .  j ava2  s .c  o m
    ws.send(buffer);
}

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From source file:org.uberfire.ext.editor.commons.client.file.exports.ImageFileExport.java

License:Apache License

/**
 * Creates a Blob instance for the raw image data-uri value.
 * @param data The image uri data.//from  w w  w. j  a v a  2  s  . co m
 * @param mimeType The media type for the generated blob.
 */
public static Blob dataImageAsBlob(final String data, final String mimeType) {
    final String byteString = Window.atob(data);
    final ArrayBuffer buffer = ArrayBufferNative.create(byteString.length());
    final Uint8Array ia = Uint8ArrayNative.create(buffer);
    for (int i = 0; i < byteString.length(); i++) {
        ia.set(i, byteString.charAt(i));
    }
    return new BlobImpl(new Object[] { ia }, BlobPropertyBag.create(mimeType));
}

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From source file:thothbot.parallax.core.client.textures.DataTexture.java

License:Open Source License

public void generateDataTexture(Color color) {
    int size = width * height;
    Uint8Array data = TypedArrays.createUint8Array(3 * size);

    int r = (int) Math.floor(color.getR() * 255);
    int g = (int) Math.floor(color.getG() * 255);
    int b = (int) Math.floor(color.getB() * 255);

    for (int i = 0; i < size; i++) {
        data.set(i * 3, r);
        data.set(i * 3 + 1, g);/*  w  w w . j  a v a2 s .  c  o m*/
        data.set(i * 3 + 2, b);

    }

    setData(data);
    setFormat(PixelFormat.RGB);
    setNeedsUpdate(true);
}

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