Example usage for io.netty.buffer ByteBuf isWritable

Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf isWritable.

Prototype

public abstract boolean isWritable();

Source Link

Document

Returns true if and only if (this.capacity - this.writerIndex) is greater than 0 .

Usage

From source file:org.asynchttpclient.request.body.multipart.MultipartBody.java

License:Open Source License

public BodyState transferTo(ByteBuf target) throws IOException {

    if (done)/*from  w  w  w. j  a v a  2  s.co m*/
        return BodyState.STOP;

    while (target.isWritable() && !done) {
        MultipartPart<? extends Part> currentPart = parts.get(currentPartIndex);
        currentPart.transferTo(target);

        if (currentPart.getState() == MultipartState.DONE) {
            currentPartIndex++;
            if (currentPartIndex == parts.size()) {
                done = true;
            }
        }
    }

    return BodyState.CONTINUE;
}

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From source file:org.fusesource.hawtdispatch.netty.HawtSocketChannel.java

License:Apache License

private void onReadReady() {
    final ChannelPipeline pipeline = pipeline();
    final ByteBuf byteBuf = pipeline.inboundByteBuffer();
    boolean closed = false;
    boolean read = false;
    boolean firedInboundBufferSuspended = false;
    try {/*w  w w .  jav a2s.  c  om*/
        expandReadBuffer(byteBuf);
        loop: for (;;) {

            int localReadAmount = byteBuf.writeBytes(javaChannel(), byteBuf.writableBytes());
            if (localReadAmount > 0) {
                read = true;
            } else if (localReadAmount < 0) {
                closed = true;
                break;
            }

            switch (expandReadBuffer(byteBuf)) {
            case 0:
                // Read all - stop reading.
                break loop;
            case 1:
                // Keep reading until everything is read.
                break;
            case 2:
                // Let the inbound handler drain the buffer and continue reading.
                if (read) {
                    read = false;
                    pipeline.fireInboundBufferUpdated();
                    if (!byteBuf.isWritable()) {
                        throw new IllegalStateException(
                                "an inbound handler whose buffer is full must consume at " + "least one byte.");
                    }
                }
            }
        }
    } catch (Throwable t) {
        if (read) {
            read = false;
            pipeline.fireInboundBufferUpdated();
        }

        if (t instanceof IOException) {
            closed = true;
        } else if (!closed) {
            firedInboundBufferSuspended = true;
            pipeline.fireChannelReadSuspended();
        }
        pipeline().fireExceptionCaught(t);
    } finally {
        if (read) {
            pipeline.fireInboundBufferUpdated();
        }

        if (closed) {
            setInputShutdown();
            if (isOpen()) {
                if (Boolean.TRUE.equals(config().getOption(ChannelOption.ALLOW_HALF_CLOSURE))) {
                    pipeline.fireUserEventTriggered(ChannelInputShutdownEvent.INSTANCE);
                } else {
                    close(newPromise());
                }
            }
        } else if (!firedInboundBufferSuspended) {
            pipeline.fireChannelReadSuspended();
        }

        if (!config().isAutoRead()) {
            readSource.suspend();
        }
    }
}

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From source file:org.jfxvnc.net.rfb.codec.decoder.rect.RawRectDecoder.java

License:Apache License

protected void sendRect(List<Object> out) {
    int i = 0;/* w w  w . ja  va 2  s.  co m*/
    // ByteBuf pixels = aloc.buffer(capacity);
    // while (pixels.isWritable()) {
    // pixels.writeInt(framebuffer.getUnsignedByte(i + redPos) << pixelFormat.getRedShift()
    // | framebuffer.getUnsignedByte(i + 1) << pixelFormat.getGreenShift()
    // | framebuffer.getUnsignedByte(i + bluePos) << pixelFormat.getBlueShift() | 0xff000000);
    // i+=4;
    // }

    if (pixelFormat.getBytePerPixel() == 1) {
        out.add(new RawImageRect(rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight(),
                framebuffer.copy(), rect.getWidth()));
        return;
    }

    // reduce 4 byte to 3 byte
    int size = capacity - (capacity / 4);
    ByteBuf pixels = aloc.buffer(size, size);
    while (pixels.isWritable()) {
        pixels.writeByte(framebuffer.getUnsignedByte(i + redPos));
        pixels.writeByte(framebuffer.getUnsignedByte(i + 1));
        pixels.writeByte(framebuffer.getUnsignedByte(i + bluePos));
        i += 4;
    }
    out.add(new RawImageRect(rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight(), pixels,
            rect.getWidth() * 3));

    // if (pixels.length > 5000) {
    // Arrays.parallelSetAll(pixels,
    // (i) -> framebuffer.getUnsignedByte(i * 4 + redPos) << pixelFormat.getRedShift()
    // | framebuffer.getUnsignedByte(i * 4 + 1) << pixelFormat.getGreenShift()
    // | framebuffer.getUnsignedByte(i * 4 + bluePos) << pixelFormat.getBlueShift() | 0xff000000);
    // } else {
    // Arrays.setAll(pixels,
    // (i) -> framebuffer.getUnsignedByte(i * 4 + redPos) << pixelFormat.getRedShift()
    // | framebuffer.getUnsignedByte(i * 4 + 1) << pixelFormat.getGreenShift()
    // | framebuffer.getUnsignedByte(i * 4 + bluePos) << pixelFormat.getBlueShift() | 0xff000000);
    // }

}

---

From source file:org.jfxvnc.net.rfb.codec.decoder.rect.ZlibRectDecoder.java

License:Apache License

@Override
protected void sendRect(List<Object> out) {
    initialized = false;/*from ww w.j  a  v  a 2s .  c  o m*/
    if (framebuffer.hasArray()) {
        inflater.setInput(framebuffer.array(), 0, framebuffer.capacity());
    } else {
        byte[] array = new byte[framebuffer.readableBytes()];
        framebuffer.getBytes(framebuffer.readerIndex(), array);
        inflater.setInput(array);
    }
    byte[] result = new byte[rect.getWidth() * rect.getHeight() * pixelFormat.getBytePerPixel()];
    try {
        int resultLength = inflater.inflate(result);
        if (resultLength != result.length) {
            logger.error("incorrect zlib ({}/{})", resultLength, result.length);
            return;
        }

        if (pixelFormat.getBytePerPixel() == 1) {
            out.add(new ZlibImageRect(rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight(),
                    framebuffer.copy(), rect.getWidth()));
            return;
        }

        int i = 0;
        ByteBuf pixels = aloc.buffer(result.length - (result.length / 4));
        while (pixels.isWritable()) {
            pixels.writeByte(result[i + redPos] & 0xFF);
            pixels.writeByte(result[i + 1] & 0xFF);
            pixels.writeByte(result[i + bluePos] & 0xFF);
            i += 4;
        }
        out.add(new ZlibImageRect(rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight(), pixels,
                rect.getWidth() * 3));

    } catch (DataFormatException e) {
        logger.error(e.getMessage(), e);
        return;
    }
}

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From source file:org.legacy.network.protocol.ondemand.XorEncoder.java

License:Open Source License

@Override
protected void encode(ChannelHandlerContext ctx, ByteBuf in, ByteBuf out) throws Exception {
    while (out.isWritable()) {
        out.writeByte(in.readUnsignedByte() ^ key);
    }/*from   w  ww  . j  a v a 2 s.  com*/
}

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