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- /* Copyright 2015 Pierre Ossman <ossman@cendio.se> for Cendio AB
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- /*
- * This program reads files produced by TightVNC's/TurboVNC's
- * compare-encodings. It is basically a dump of the RFB protocol
- * from the server side from the ServerInit message and forward.
- * It is assumed that the client is using a bgr888 (LE) pixel
- * format.
- */
-
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <math.h>
- #include <sys/time.h>
-
- #include <rdr/Exception.h>
- #include <rdr/FileInStream.h>
- #include <rdr/OutStream.h>
-
- #include <rfb/CConnection.h>
- #include <rfb/CMsgReader.h>
- #include <rfb/CMsgWriter.h>
- #include <rfb/PixelBuffer.h>
- #include <rfb/PixelFormat.h>
-
- #include "util.h"
-
- // FIXME: Files are always in this format
- static const rfb::PixelFormat filePF(32, 24, false, true, 255, 255, 255, 0, 8, 16);
-
- class DummyOutStream : public rdr::OutStream {
- public:
- DummyOutStream();
-
- virtual size_t length();
- virtual void flush();
-
- private:
- virtual void overrun(size_t needed);
-
- int offset;
- rdr::U8 buf[131072];
- };
-
- class CConn : public rfb::CConnection {
- public:
- CConn(const char *filename);
- ~CConn();
-
- virtual void initDone();
- virtual void setPixelFormat(const rfb::PixelFormat& pf);
- virtual void setCursor(int, int, const rfb::Point&, const rdr::U8*);
- virtual void setCursorPos(const rfb::Point&);
- virtual void framebufferUpdateStart();
- virtual void framebufferUpdateEnd();
- virtual void setColourMapEntries(int, int, rdr::U16*);
- virtual void bell();
- virtual void serverCutText(const char*);
-
- public:
- double cpuTime;
-
- protected:
- rdr::FileInStream *in;
- DummyOutStream *out;
- };
-
- DummyOutStream::DummyOutStream()
- {
- offset = 0;
- ptr = buf;
- end = buf + sizeof(buf);
- }
-
- size_t DummyOutStream::length()
- {
- flush();
- return offset;
- }
-
- void DummyOutStream::flush()
- {
- offset += ptr - buf;
- ptr = buf;
- }
-
- void DummyOutStream::overrun(size_t needed)
- {
- flush();
- if (avail() < needed)
- throw rdr::Exception("Insufficient dummy output buffer");
- }
-
- CConn::CConn(const char *filename)
- {
- cpuTime = 0.0;
-
- in = new rdr::FileInStream(filename);
- out = new DummyOutStream;
- setStreams(in, out);
-
- // Need to skip the initial handshake
- setState(RFBSTATE_INITIALISATION);
- // That also means that the reader and writer weren't setup
- setReader(new rfb::CMsgReader(this, in));
- setWriter(new rfb::CMsgWriter(&server, out));
- }
-
- CConn::~CConn()
- {
- delete in;
- delete out;
- }
-
- void CConn::initDone()
- {
- setFramebuffer(new rfb::ManagedPixelBuffer(filePF,
- server.width(),
- server.height()));
- }
-
- void CConn::setPixelFormat(const rfb::PixelFormat& pf)
- {
- // Override format
- CConnection::setPixelFormat(filePF);
- }
-
- void CConn::setCursor(int, int, const rfb::Point&, const rdr::U8*)
- {
- }
-
- void CConn::setCursorPos(const rfb::Point&)
- {
- }
-
- void CConn::framebufferUpdateStart()
- {
- CConnection::framebufferUpdateStart();
-
- startCpuCounter();
- }
-
- void CConn::framebufferUpdateEnd()
- {
- CConnection::framebufferUpdateEnd();
-
- endCpuCounter();
-
- cpuTime += getCpuCounter();
- }
-
- void CConn::setColourMapEntries(int, int, rdr::U16*)
- {
- }
-
- void CConn::bell()
- {
- }
-
- void CConn::serverCutText(const char*)
- {
- }
-
- struct stats
- {
- double decodeTime;
- double realTime;
- };
-
- static struct stats runTest(const char *fn)
- {
- CConn *cc;
- struct timeval start, stop;
- struct stats s;
-
- gettimeofday(&start, NULL);
-
- try {
- cc = new CConn(fn);
- } catch (rdr::Exception& e) {
- fprintf(stderr, "Failed to open rfb file: %s\n", e.str());
- exit(1);
- }
-
- try {
- while (true)
- cc->processMsg();
- } catch (rdr::EndOfStream& e) {
- } catch (rdr::Exception& e) {
- fprintf(stderr, "Failed to run rfb file: %s\n", e.str());
- exit(1);
- }
-
- gettimeofday(&stop, NULL);
-
- s.decodeTime = cc->cpuTime;
- s.realTime = (double)stop.tv_sec - start.tv_sec;
- s.realTime += ((double)stop.tv_usec - start.tv_usec)/1000000.0;
-
- delete cc;
-
- return s;
- }
-
- static void sort(double *array, int count)
- {
- bool sorted;
- int i;
- do {
- sorted = true;
- for (i = 1;i < count;i++) {
- if (array[i-1] > array[i]) {
- double d;
- d = array[i];
- array[i] = array[i-1];
- array[i-1] = d;
- sorted = false;
- }
- }
- } while (!sorted);
- }
-
- static const int runCount = 9;
-
- int main(int argc, char **argv)
- {
- int i;
- struct stats runs[runCount];
- double values[runCount], dev[runCount];
- double median, meddev;
-
- if (argc != 2) {
- printf("Syntax: %s <rfb file>\n", argv[0]);
- return 1;
- }
-
- // Warmup
- runTest(argv[1]);
-
- // Multiple runs to get a good average
- for (i = 0;i < runCount;i++)
- runs[i] = runTest(argv[1]);
-
- // Calculate median and median deviation for CPU usage
- for (i = 0;i < runCount;i++)
- values[i] = runs[i].decodeTime;
-
- sort(values, runCount);
- median = values[runCount/2];
-
- for (i = 0;i < runCount;i++)
- dev[i] = fabs((values[i] - median) / median) * 100;
-
- sort(dev, runCount);
- meddev = dev[runCount/2];
-
- printf("CPU time: %g s (+/- %g %%)\n", median, meddev);
-
- // And for CPU core usage
- for (i = 0;i < runCount;i++)
- values[i] = runs[i].decodeTime / runs[i].realTime;
-
- sort(values, runCount);
- median = values[runCount/2];
-
- for (i = 0;i < runCount;i++)
- dev[i] = fabs((values[i] - median) / median) * 100;
-
- sort(dev, runCount);
- meddev = dev[runCount/2];
-
- printf("Core usage: %g (+/- %g %%)\n", median, meddev);
-
- return 0;
- }
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