vncinput.hh

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/*
 * Copyright (c) 2010, 2015 ARM Limited
 * All rights reserved
 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Ali Saidi
 *          William Wang
 */

#ifndef __BASE_VNC_VNC_INPUT_HH__
#define __BASE_VNC_VNC_INPUT_HH__

#include <iostream>
#include <memory>

#include "base/imgwriter.hh"
#include "params/VncInput.hh"
#include "sim/sim_object.hh"

class OutputDirectory;

class VncKeyboard
{
  public:
    virtual void keyPress(uint32_t key, bool down) = 0;
};

class VncMouse
{
  public:
    virtual void mouseAt(uint16_t x, uint16_t y, uint8_t buttons) = 0;
};

class VncInput : public SimObject
{
  public:

    enum ClientMessages {
        ClientSetPixelFormat    = 0,
        ClientSetEncodings      = 2,
        ClientFrameBufferUpdate = 3,
        ClientKeyEvent          = 4,
        ClientPointerEvent      = 5,
        ClientCutText           = 6
    };

    struct PixelFormat {
        uint8_t bpp;
        uint8_t depth;
        uint8_t bigendian;
        uint8_t truecolor;
        uint16_t redmax;
        uint16_t greenmax;
        uint16_t bluemax;
        uint8_t redshift;
        uint8_t greenshift;
        uint8_t blueshift;
        uint8_t padding[3];
    } M5_ATTR_PACKED;

    struct PixelFormatMessage {
        uint8_t type;
        uint8_t padding[3];
        PixelFormat px;
    } M5_ATTR_PACKED;

    struct PixelEncodingsMessage {
        uint8_t type;
        uint8_t padding;
        uint16_t num_encodings;
    } M5_ATTR_PACKED;

    struct FrameBufferUpdateReq {
        uint8_t type;
        uint8_t incremental;
        uint16_t x;
        uint16_t y;
        uint16_t width;
        uint16_t height;
    } M5_ATTR_PACKED;

    struct KeyEventMessage {
        uint8_t type;
        uint8_t down_flag;
        uint8_t padding[2];
        uint32_t key;
    } M5_ATTR_PACKED;

    struct PointerEventMessage {
        uint8_t type;
        uint8_t button_mask;
        uint16_t x;
        uint16_t y;
    } M5_ATTR_PACKED;

    struct ClientCutTextMessage {
        uint8_t type;
        uint8_t padding[3];
        uint32_t length;
    } M5_ATTR_PACKED;

    typedef VncInputParams Params;
    VncInput(const Params *p);

    virtual void setFrameBuffer(const FrameBuffer *rfb);

    void setKeyboard(VncKeyboard *_keyboard) { keyboard = _keyboard; }

    void setMouse(VncMouse *_mouse) { mouse = _mouse; }

    uint16_t videoWidth() const { return _videoWidth; }

    uint16_t videoHeight() const { return _videoHeight; }

    virtual void setDirty();

  protected:
    virtual void frameBufferResized() {};

    VncKeyboard *keyboard;

    VncMouse *mouse;

    const FrameBuffer *fb;

    uint16_t _videoWidth;

    uint16_t _videoHeight;

    bool captureEnabled;

    int captureCurrentFrame;

    OutputDirectory *captureOutputDirectory;

    uint64_t captureLastHash;

    std::unique_ptr<ImgWriter> captureImage;

    Enums::ImageFormat imgFormat;

    void captureFrameBuffer();
};
#endif