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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
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* 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
*/
/** @file
* Declaration of a VNC input
*/
#ifndef __BASE_VNC_VNC_INPUT_HH__
#define __BASE_VNC_VNC_INPUT_HH__
#include <iostream>
#include <memory>
#include "base/bitmap.hh"
#include "params/VncInput.hh"
#include "sim/sim_object.hh"
/**
* A device that expects to receive input from the vnc server should derrive
* (through mulitple inheritence if necessary from VncKeyboard or VncMouse
* and call setKeyboard() or setMouse() respectively on the vnc server.
*/
class VncKeyboard
{
public:
/**
* Called when the vnc server receives a key press event from the
* client.
* @param key the key passed is an x11 keysym
* @param down is the key now down or up?
*/
virtual void keyPress(uint32_t key, bool down) = 0;
};
class VncMouse
{
public:
/**
* called whenever the mouse moves or it's button state changes
* buttons is a simple mask with each button (0-8) corresponding to
* a bit position in the byte with 1 being down and 0 being up
* @param x the x position of the mouse
* @param y the y position of the mouse
* @param buttos the button state as described above
*/
virtual void mouseAt(uint16_t x, uint16_t y, uint8_t buttons) = 0;
};
class VncInput : public SimObject
{
public:
/** Client -> Server message IDs */
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);
/** Set the address of the frame buffer we are going to show.
* To avoid copying, just have the display controller
* tell us where the data is instead of constanly copying it around
* @param rfb frame buffer that we're going to use
*/
virtual void setFrameBuffer(const FrameBuffer *rfb);
/** Set up the device that would like to receive notifications when keys are
* pressed in the vnc client keyboard
* @param _keyboard an object that derrives from VncKeyboard
*/
void setKeyboard(VncKeyboard *_keyboard) { keyboard = _keyboard; }
/** Setup the device that would like to receive notifications when mouse
* movements or button presses are received from the vnc client.
* @param _mouse an object that derrives from VncMouse
*/
void setMouse(VncMouse *_mouse) { mouse = _mouse; }
/** What is the width of the screen we're displaying.
* This is used for pointer/tablet devices that need to know to calculate
* the correct value to send to the device driver.
* @return the width of the simulated screen
*/
uint16_t videoWidth() const { return _videoWidth; }
/** What is the height of the screen we're displaying.
* This is used for pointer/tablet devices that need to know to calculate
* the correct value to send to the device driver.
* @return the height of the simulated screen
*/
uint16_t videoHeight() const { return _videoHeight; }
/** The frame buffer uses this call to notify the vnc server that
* the frame buffer has been updated and a new image needs to be sent to the
* client
*/
virtual void setDirty();
protected:
virtual void frameBufferResized() {};
/** The device to notify when we get key events */
VncKeyboard *keyboard;
/** The device to notify when we get mouse events */
VncMouse *mouse;
/** pointer to the actual data that is stored in the frame buffer device */
const FrameBuffer *fb;
/** the width of the frame buffer we are sending to the client */
uint16_t _videoWidth;
/** the height of the frame buffer we are sending to the client */
uint16_t _videoHeight;
/** Flag indicating whether to capture snapshots of frame buffer or not */
bool captureEnabled;
/** Current frame number being captured to a file */
int captureCurrentFrame;
/** Directory to store captured frames to */
std::string captureOutputDirectory;
/** Computed hash of the last captured frame */
uint64_t captureLastHash;
/** Cached bitmap object for writing out frame buffers to file */
std::unique_ptr<Bitmap> captureBitmap;
/** Captures the current frame buffer to a file */
void captureFrameBuffer();
};
#endif
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