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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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <rdr/Exception.h>
#include <rdr/FileInStream.h>
#include <rfb/CConnection.h>
#include <rfb/CMsgReader.h>
#include <rfb/Decoder.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 CConn : public rfb::CConnection {
public:
CConn(const char *filename);
~CConn();
virtual void setDesktopSize(int w, int h);
virtual void setPixelFormat(const rfb::PixelFormat& pf);
virtual void setCursor(int, int, const rfb::Point&, void*, void*);
virtual void dataRect(const rfb::Rect&, int);
virtual void setColourMapEntries(int, int, rdr::U16*);
virtual void bell();
virtual void serverCutText(const char*, rdr::U32);
public:
double cpuTime;
protected:
rdr::FileInStream *in;
rfb::Decoder *decoders[rfb::encodingMax+1];
rfb::ManagedPixelBuffer pb;
};
CConn::CConn(const char *filename)
{
int i;
cpuTime = 0.0;
in = new rdr::FileInStream(filename);
setStreams(in, NULL);
memset(decoders, 0, sizeof(decoders));
for (i = 0;i < rfb::encodingMax;i++) {
if (!rfb::Decoder::supported(i))
continue;
decoders[i] = rfb::Decoder::createDecoder(i, this);
}
// 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));
}
CConn::~CConn()
{
int i;
delete in;
for (i = 0;i < rfb::encodingMax;i++)
delete decoders[i];
}
void CConn::setDesktopSize(int w, int h)
{
CConnection::setDesktopSize(w, h);
pb.setSize(cp.width, cp.height);
}
void CConn::setPixelFormat(const rfb::PixelFormat& pf)
{
// Override format
CConnection::setPixelFormat(filePF);
pb.setPF(cp.pf());
}
void CConn::setCursor(int, int, const rfb::Point&, void*, void*)
{
}
void CConn::dataRect(const rfb::Rect &r, int encoding)
{
if (!decoders[encoding])
throw rdr::Exception("Unknown encoding");
startCpuCounter();
decoders[encoding]->readRect(r, &pb);
endCpuCounter();
cpuTime += getCpuCounter();
}
void CConn::setColourMapEntries(int, int, rdr::U16*)
{
}
void CConn::bell()
{
}
void CConn::serverCutText(const char*, rdr::U32)
{
}
static double runTest(const char *fn)
{
CConn *cc;
double time;
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);
}
time = cc->cpuTime;
delete cc;
return time;
}
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;
double times[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++)
times[i] = runTest(argv[1]);
// Calculate median and median deviation
sort(times, runCount);
median = times[runCount/2];
for (i = 0;i < runCount;i++)
dev[i] = fabs((times[i] - median) / median) * 100;
sort(dev, runCount);
meddev = dev[runCount/2];
printf("CPU time: %g s (+/- %g %%)\n", median, meddev);
return 0;
}
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