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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
* Implementiation of a VNC input
*/
#include "base/vnc/vncinput.hh"
#include <sys/types.h>
#include "base/misc.hh"
#include "base/output.hh"
#include "base/trace.hh"
#include "debug/VNC.hh"
using namespace std;
VncInput::VncInput(const Params *p)
: SimObject(p), keyboard(NULL), mouse(NULL),
fb(&FrameBuffer::dummy),
_videoWidth(fb->width()), _videoHeight(fb->height()),
captureEnabled(p->frame_capture),
captureCurrentFrame(0), captureLastHash(0)
{
if (captureEnabled) {
// remove existing frame output directory if it exists, then create a
// clean empty directory
const string FRAME_OUTPUT_SUBDIR = "frames_" + name();
simout.remove(FRAME_OUTPUT_SUBDIR, true);
captureOutputDirectory = simout.createSubdirectory(
FRAME_OUTPUT_SUBDIR);
}
}
void
VncInput::setFrameBuffer(const FrameBuffer *rfb)
{
if (!rfb)
panic("Trying to VNC frame buffer to NULL!");
fb = rfb;
// create bitmap of the frame with new attributes
if (captureEnabled)
captureBitmap.reset(new Bitmap(rfb));
// Setting a new frame buffer means that we need to send an update
// to the client. Mark the internal buffers as dirty to do so.
setDirty();
}
void
VncInput::setDirty()
{
const unsigned width(fb->width());
const unsigned height(fb->height());
if (_videoWidth != width || _videoHeight != height) {
DPRINTF(VNC, "Updating video params: width: %d height: %d\n",
width, height);
_videoWidth = width;
_videoHeight = height;
frameBufferResized();
}
if (captureEnabled)
captureFrameBuffer();
}
void
VncInput::captureFrameBuffer()
{
assert(captureBitmap);
// skip identical frames
uint64_t new_hash = fb->getHash();
if (captureLastHash == new_hash)
return;
captureLastHash = new_hash;
// get the filename for the current frame
char frameFilenameBuffer[64];
snprintf(frameFilenameBuffer, 64, "fb.%06d.%lld.bmp.gz",
captureCurrentFrame, static_cast<long long int>(curTick()));
const string frameFilename(frameFilenameBuffer);
// create the compressed framebuffer file
OutputStream *fb_out(captureOutputDirectory->create(frameFilename, true));
captureBitmap->write(*fb_out->stream());
captureOutputDirectory->close(fb_out);
++captureCurrentFrame;
}
// create the VNC Replayer object
VncInput *
VncInputParams::create()
{
return new VncInput(this);
}
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