vncinput.cc revision 11359
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 <sys/types.h> 46 47#include "base/vnc/vncinput.hh" 48#include "base/output.hh" //simout 49#include "base/trace.hh" 50#include "debug/VNC.hh" 51 52using namespace std; 53 54VncInput::VncInput(const Params *p) 55 : SimObject(p), keyboard(NULL), mouse(NULL), 56 fb(&FrameBuffer::dummy), 57 _videoWidth(fb->width()), _videoHeight(fb->height()), 58 captureEnabled(p->frame_capture), 59 captureCurrentFrame(0), captureLastHash(0) 60{ 61 if (captureEnabled) { 62 // remove existing frame output directory if it exists, then create a 63 // clean empty directory 64 const string FRAME_OUTPUT_SUBDIR = "frames_" + name(); 65 simout.remove(FRAME_OUTPUT_SUBDIR, true); 66 captureOutputDirectory = simout.createSubdirectory( 67 FRAME_OUTPUT_SUBDIR); 68 } 69} 70 71void 72VncInput::setFrameBuffer(const FrameBuffer *rfb) 73{ 74 if (!rfb) 75 panic("Trying to VNC frame buffer to NULL!"); 76 77 fb = rfb; 78 79 // create bitmap of the frame with new attributes 80 if (captureEnabled) 81 captureBitmap.reset(new Bitmap(rfb)); 82 83 // Setting a new frame buffer means that we need to send an update 84 // to the client. Mark the internal buffers as dirty to do so. 85 setDirty(); 86} 87 88void 89VncInput::setDirty() 90{ 91 const unsigned width(fb->width()); 92 const unsigned height(fb->height()); 93 94 if (_videoWidth != width || _videoHeight != height) { 95 DPRINTF(VNC, "Updating video params: width: %d height: %d\n", 96 width, height); 97 98 _videoWidth = width; 99 _videoHeight = height; 100 101 frameBufferResized(); 102 } 103 104 if (captureEnabled) 105 captureFrameBuffer(); 106} 107 108void 109VncInput::captureFrameBuffer() 110{ 111 assert(captureBitmap); 112 113 // skip identical frames 114 uint64_t new_hash = fb->getHash(); 115 if (captureLastHash == new_hash) 116 return; 117 captureLastHash = new_hash; 118 119 // get the filename for the current frame 120 char frameFilenameBuffer[64]; 121 snprintf(frameFilenameBuffer, 64, "fb.%06d.%lld.bmp.gz", 122 captureCurrentFrame, static_cast<long long int>(curTick())); 123 const string frameFilename(frameFilenameBuffer); 124 125 // create the compressed framebuffer file 126 OutputStream *fb_out(captureOutputDirectory->create(frameFilename, true)); 127 captureBitmap->write(*fb_out->stream()); 128 captureOutputDirectory->close(fb_out); 129 130 ++captureCurrentFrame; 131} 132 133// create the VNC Replayer object 134VncInput * 135VncInputParams::create() 136{ 137 return new VncInput(this); 138} 139