vncinput.cc revision 11800
1/* 2 * Copyright (c) 2010, 2015 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions are 16 * met: redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer; 18 * redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution; 21 * neither the name of the copyright holders nor the names of its 22 * contributors may be used to endorse or promote products derived from 23 * this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 * 37 * Authors: Ali Saidi 38 * William Wang 39 */ 40 41/** @file 42 * Implementiation of a VNC input 43 */ 44 45#include "base/vnc/vncinput.hh" 46 47#include <sys/types.h> 48 49#include "base/misc.hh" 50#include "base/output.hh" 51#include "base/trace.hh" 52#include "debug/VNC.hh" 53 54using namespace std; 55 56VncInput::VncInput(const Params *p) 57 : SimObject(p), keyboard(NULL), mouse(NULL), 58 fb(&FrameBuffer::dummy), 59 _videoWidth(fb->width()), _videoHeight(fb->height()), 60 captureEnabled(p->frame_capture), 61 captureCurrentFrame(0), captureLastHash(0) 62{ 63 if (captureEnabled) { 64 // remove existing frame output directory if it exists, then create a 65 // clean empty directory 66 const string FRAME_OUTPUT_SUBDIR = "frames_" + name(); 67 simout.remove(FRAME_OUTPUT_SUBDIR, true); 68 captureOutputDirectory = simout.createSubdirectory( 69 FRAME_OUTPUT_SUBDIR); 70 } 71} 72 73void 74VncInput::setFrameBuffer(const FrameBuffer *rfb) 75{ 76 if (!rfb) 77 panic("Trying to VNC frame buffer to NULL!"); 78 79 fb = rfb; 80 81 // create bitmap of the frame with new attributes 82 if (captureEnabled) 83 captureBitmap.reset(new Bitmap(rfb)); 84 85 // Setting a new frame buffer means that we need to send an update 86 // to the client. Mark the internal buffers as dirty to do so. 87 setDirty(); 88} 89 90void 91VncInput::setDirty() 92{ 93 const unsigned width(fb->width()); 94 const unsigned height(fb->height()); 95 96 if (_videoWidth != width || _videoHeight != height) { 97 DPRINTF(VNC, "Updating video params: width: %d height: %d\n", 98 width, height); 99 100 _videoWidth = width; 101 _videoHeight = height; 102 103 frameBufferResized(); 104 } 105 106 if (captureEnabled) 107 captureFrameBuffer(); 108} 109 110void 111VncInput::captureFrameBuffer() 112{ 113 assert(captureBitmap); 114 115 // skip identical frames 116 uint64_t new_hash = fb->getHash(); 117 if (captureLastHash == new_hash) 118 return; 119 captureLastHash = new_hash; 120 121 // get the filename for the current frame 122 char frameFilenameBuffer[64]; 123 snprintf(frameFilenameBuffer, 64, "fb.%06d.%lld.bmp.gz", 124 captureCurrentFrame, static_cast<long long int>(curTick())); 125 const string frameFilename(frameFilenameBuffer); 126 127 // create the compressed framebuffer file 128 OutputStream *fb_out(captureOutputDirectory->create(frameFilename, true)); 129 captureBitmap->write(*fb_out->stream()); 130 captureOutputDirectory->close(fb_out); 131 132 ++captureCurrentFrame; 133} 134 135// create the VNC Replayer object 136VncInput * 137VncInputParams::create() 138{ 139 return new VncInput(this); 140} 141