Examples with ShortBuffer java.nio.ShortBuffer used on opensource projects

Example 21 with ShortBuffer

use of java.nio.ShortBuffer in project android_frameworks_base by ResurrectionRemix.

the class DhcpPacket method checksum.

/**
     * Performs an IP checksum (used in IP header and across UDP
     * payload) on the specified portion of a ByteBuffer.  The seed
     * allows the checksum to commence with a specified value.
     */
private int checksum(ByteBuffer buf, int seed, int start, int end) {
    int sum = seed;
    int bufPosition = buf.position();
    // set position of original ByteBuffer, so that the ShortBuffer
    // will be correctly initialized
    buf.position(start);
    ShortBuffer shortBuf = buf.asShortBuffer();
    // re-set ByteBuffer position
    buf.position(bufPosition);
    short[] shortArray = new short[(end - start) / 2];
    shortBuf.get(shortArray);
    for (short s : shortArray) {
        sum += intAbs(s);
    }
    start += shortArray.length * 2;
    // see if a singleton byte remains
    if (end != start) {
        short b = buf.get(start);
        // make it unsigned
        if (b < 0) {
            b += 256;
        }
        sum += b * 256;
    }
    sum = ((sum >> 16) & 0xFFFF) + (sum & 0xFFFF);
    sum = ((sum + ((sum >> 16) & 0xFFFF)) & 0xFFFF);
    int negated = ~sum;
    return intAbs((short) negated);
}

Example 22 with ShortBuffer

use of java.nio.ShortBuffer in project XobotOS by xamarin.

the class GLLogWrapper method doArrayElement.

private void doArrayElement(StringBuilder builder, boolean enabled, String name, PointerInfo pointer, int index) {
    if (!enabled) {
        return;
    }
    builder.append(" ");
    builder.append(name + ":{");
    if (pointer == null || pointer.mTempByteBuffer == null) {
        builder.append("undefined }");
        return;
    }
    if (pointer.mStride < 0) {
        builder.append("invalid stride");
        return;
    }
    int stride = pointer.getStride();
    ByteBuffer byteBuffer = pointer.mTempByteBuffer;
    int size = pointer.mSize;
    int type = pointer.mType;
    int sizeofType = pointer.sizeof(type);
    int byteOffset = stride * index;
    for (int i = 0; i < size; i++) {
        if (i > 0) {
            builder.append(", ");
        }
        switch(type) {
            case GL_BYTE:
                {
                    byte d = byteBuffer.get(byteOffset);
                    builder.append(Integer.toString(d));
                }
                break;
            case GL_UNSIGNED_BYTE:
                {
                    byte d = byteBuffer.get(byteOffset);
                    builder.append(Integer.toString(0xff & d));
                }
                break;
            case GL_SHORT:
                {
                    ShortBuffer shortBuffer = byteBuffer.asShortBuffer();
                    short d = shortBuffer.get(byteOffset / 2);
                    builder.append(Integer.toString(d));
                }
                break;
            case GL_FIXED:
                {
                    IntBuffer intBuffer = byteBuffer.asIntBuffer();
                    int d = intBuffer.get(byteOffset / 4);
                    builder.append(Integer.toString(d));
                }
                break;
            case GL_FLOAT:
                {
                    FloatBuffer intBuffer = byteBuffer.asFloatBuffer();
                    float d = intBuffer.get(byteOffset / 4);
                    builder.append(Float.toString(d));
                }
                break;
            default:
                builder.append("?");
                break;
        }
        byteOffset += sizeofType;
    }
    builder.append("}");
}

Example 23 with ShortBuffer

use of java.nio.ShortBuffer in project XobotOS by xamarin.

the class GLLogWrapper method toByteBuffer.

private ByteBuffer toByteBuffer(int byteCount, Buffer input) {
    ByteBuffer result = null;
    boolean convertWholeBuffer = (byteCount < 0);
    if (input instanceof ByteBuffer) {
        ByteBuffer input2 = (ByteBuffer) input;
        int position = input2.position();
        if (convertWholeBuffer) {
            byteCount = input2.limit() - position;
        }
        result = ByteBuffer.allocate(byteCount).order(input2.order());
        for (int i = 0; i < byteCount; i++) {
            result.put(input2.get());
        }
        input2.position(position);
    } else if (input instanceof CharBuffer) {
        CharBuffer input2 = (CharBuffer) input;
        int position = input2.position();
        if (convertWholeBuffer) {
            byteCount = (input2.limit() - position) * 2;
        }
        result = ByteBuffer.allocate(byteCount).order(input2.order());
        CharBuffer result2 = result.asCharBuffer();
        for (int i = 0; i < byteCount / 2; i++) {
            result2.put(input2.get());
        }
        input2.position(position);
    } else if (input instanceof ShortBuffer) {
        ShortBuffer input2 = (ShortBuffer) input;
        int position = input2.position();
        if (convertWholeBuffer) {
            byteCount = (input2.limit() - position) * 2;
        }
        result = ByteBuffer.allocate(byteCount).order(input2.order());
        ShortBuffer result2 = result.asShortBuffer();
        for (int i = 0; i < byteCount / 2; i++) {
            result2.put(input2.get());
        }
        input2.position(position);
    } else if (input instanceof IntBuffer) {
        IntBuffer input2 = (IntBuffer) input;
        int position = input2.position();
        if (convertWholeBuffer) {
            byteCount = (input2.limit() - position) * 4;
        }
        result = ByteBuffer.allocate(byteCount).order(input2.order());
        IntBuffer result2 = result.asIntBuffer();
        for (int i = 0; i < byteCount / 4; i++) {
            result2.put(input2.get());
        }
        input2.position(position);
    } else if (input instanceof FloatBuffer) {
        FloatBuffer input2 = (FloatBuffer) input;
        int position = input2.position();
        if (convertWholeBuffer) {
            byteCount = (input2.limit() - position) * 4;
        }
        result = ByteBuffer.allocate(byteCount).order(input2.order());
        FloatBuffer result2 = result.asFloatBuffer();
        for (int i = 0; i < byteCount / 4; i++) {
            result2.put(input2.get());
        }
        input2.position(position);
    } else if (input instanceof DoubleBuffer) {
        DoubleBuffer input2 = (DoubleBuffer) input;
        int position = input2.position();
        if (convertWholeBuffer) {
            byteCount = (input2.limit() - position) * 8;
        }
        result = ByteBuffer.allocate(byteCount).order(input2.order());
        DoubleBuffer result2 = result.asDoubleBuffer();
        for (int i = 0; i < byteCount / 8; i++) {
            result2.put(input2.get());
        }
        input2.position(position);
    } else if (input instanceof LongBuffer) {
        LongBuffer input2 = (LongBuffer) input;
        int position = input2.position();
        if (convertWholeBuffer) {
            byteCount = (input2.limit() - position) * 8;
        }
        result = ByteBuffer.allocate(byteCount).order(input2.order());
        LongBuffer result2 = result.asLongBuffer();
        for (int i = 0; i < byteCount / 8; i++) {
            result2.put(input2.get());
        }
        input2.position(position);
    } else {
        throw new RuntimeException("Unimplemented Buffer subclass.");
    }
    result.rewind();
    // The OpenGL API will interpret the result in hardware byte order,
    // so we better do that as well:
    result.order(ByteOrder.nativeOrder());
    return result;
}

Example 24 with ShortBuffer

use of java.nio.ShortBuffer in project XobotOS by xamarin.

the class Group method draw.

public void draw(GL10 gl) {
    gl.glDisableClientState(gl.GL_COLOR_ARRAY);
    gl.glVertexPointer(3, gl.GL_FIXED, 0, parent.getVertexBuffer());
    gl.glEnableClientState(gl.GL_VERTEX_ARRAY);
    gl.glNormalPointer(gl.GL_FIXED, 0, parent.getNormalBuffer());
    gl.glEnableClientState(gl.GL_NORMAL_ARRAY);
    if (parent.hasTexcoords()) {
        gl.glTexCoordPointer(2, gl.GL_FIXED, 0, parent.getTexcoordBuffer());
        gl.glEnableClientState(gl.GL_TEXTURE_COORD_ARRAY);
        gl.glEnable(gl.GL_TEXTURE_2D);
    } else {
        gl.glDisable(gl.GL_TEXTURE_2D);
    }
    Iterator<MaterialIndices> iter = materialIndices.iterator();
    while (iter.hasNext()) {
        MaterialIndices matIdx = iter.next();
        ShortBuffer indexBuffer = matIdx.getIndexBuffer();
        Material mat = matIdx.getMaterial();
        mat.setMaterialParameters(gl);
        if (parent.hasTexcoords() && mat.getMap_Kd().length() > 0) {
            Texture texture = parent.getTexture(mat.getMap_Kd());
            texture.setTextureParameters(gl);
        }
        gl.glDrawElements(gl.GL_TRIANGLES, indexBuffer.capacity(), gl.GL_UNSIGNED_SHORT, indexBuffer);
    }
}

Example 25 with ShortBuffer

use of java.nio.ShortBuffer in project XobotOS by xamarin.

the class Group method getNumTriangles.

public int getNumTriangles() {
    int numTriangles = 0;
    Iterator<MaterialIndices> iter = materialIndices.iterator();
    while (iter.hasNext()) {
        MaterialIndices matIdx = iter.next();
        ShortBuffer indexBuffer = matIdx.getIndexBuffer();
        numTriangles += indexBuffer.capacity() / 3;
    }
    return numTriangles;
}