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225 lines
4.9 KiB
225 lines
4.9 KiB
/*
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*
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* $Id: k3baudiomaxspeedjob.cpp 619556 2007-01-03 17:38:12Z trueg $
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* Copyright (C) 2005 Sebastian Trueg <trueg@k3b.org>
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*
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* This file is part of the K3b project.
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* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* See the file "COPYING" for the exact licensing terms.
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*/
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#include "k3baudiomaxspeedjob.h"
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#include "k3baudiotrack.h"
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#include "k3baudiodatasource.h"
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#include "k3baudiodoc.h"
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#include "k3baudiocdtracksource.h"
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#include "k3baudiodatasourceiterator.h"
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#include <k3bdevice.h>
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#include <k3bthread.h>
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#include <kdebug.h>
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#include <tdelocale.h>
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#include <tqdatetime.h>
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class K3bAudioMaxSpeedJob::WorkThread : public K3bThread
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{
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public:
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WorkThread( K3bAudioDoc* doc );
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~WorkThread();
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void run();
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int speedTest( K3bAudioDataSource* source );
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void cancel();
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int maxSpeedByMedia() const;
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int maxSpeed;
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private:
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K3bAudioDoc* m_doc;
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bool m_canceled;
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char* m_buffer;
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};
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K3bAudioMaxSpeedJob::WorkThread::WorkThread( K3bAudioDoc* doc )
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: K3bThread(),
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m_doc(doc),
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m_canceled(false)
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{
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m_buffer = new char[2352*10];
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}
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K3bAudioMaxSpeedJob::WorkThread::~WorkThread()
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{
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delete [] m_buffer;
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}
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void K3bAudioMaxSpeedJob::WorkThread::run()
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{
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kdDebug() << k_funcinfo << endl;
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m_canceled = false;
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emitStarted();
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K3bAudioDataSourceIterator it( m_doc );
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// count sources for minimal progress info
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int numSources = 0;
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int sourcesDone = 0;
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while( it.current() ) {
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++numSources;
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it.next();
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}
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bool success = true;
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maxSpeed = 175*1000;
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it.first();
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while( it.current() && !m_canceled ) {
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if( !it.current()->seek(0) ) {
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kdDebug() << "(K3bAudioMaxSpeedJob) seek failed." << endl;
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success = false;
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break;
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}
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// read some data
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int speed = speedTest( it.current() );
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++sourcesDone;
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emitPercent( 100*numSources/sourcesDone );
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if( speed < 0 ) {
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success = false;
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break;
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}
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else if( speed > 0 ) {
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// update the max speed
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maxSpeed = TQMIN( maxSpeed, speed );
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}
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it.next();
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}
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if( m_canceled ) {
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emitCanceled();
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success = false;
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}
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if( success )
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kdDebug() << "(K3bAudioMaxSpeedJob) max speed: " << maxSpeed << endl;
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emitFinished( success );
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}
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// returns the amount of data read from this source
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int K3bAudioMaxSpeedJob::WorkThread::speedTest( K3bAudioDataSource* source )
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{
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//
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// in case of an audio track source we only test when the cd is inserted since asking the user would
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// confuse him a lot.
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//
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// FIXME: there is still the problem of the spin up time.
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//
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if( K3bAudioCdTrackSource* cdts = dynamic_cast<K3bAudioCdTrackSource*>( source ) ) {
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if( K3bDevice::Device* dev = cdts->searchForAudioCD() ) {
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cdts->setDevice( dev );
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}
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else {
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kdDebug() << "(K3bAudioMaxSpeedJob) ignoring audio cd track source." << endl;
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return 0;
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}
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}
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TQTime t;
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int dataRead = 0;
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int r = 0;
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// start the timer
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t.start();
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// read ten seconds of audio data. This is some value which seemed about right. :)
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while( dataRead < 2352*75*10 && (r = source->read( m_buffer, 2352*10 )) > 0 ) {
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dataRead += r;
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}
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// elapsed millisec
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int usedT = t.elapsed();
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if( r < 0 ) {
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kdDebug() << "(K3bAudioMaxSpeedJob) read failure." << endl;
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return -1;
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}
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// KB/sec (add 1 millisecond to avoid division by 0)
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int throughput = (dataRead*1000+usedT)/(usedT+1)/1024;
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kdDebug() << "(K3bAudioMaxSpeedJob) throughput: " << throughput
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<< " (" << dataRead << "/" << usedT << ")" << endl;
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return throughput;
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}
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void K3bAudioMaxSpeedJob::WorkThread::cancel()
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{
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kdDebug() << k_funcinfo << endl;
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m_canceled = true;
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}
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int K3bAudioMaxSpeedJob::WorkThread::maxSpeedByMedia() const
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{
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int s = 0;
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TQValueList<int> speeds = m_doc->burner()->determineSupportedWriteSpeeds();
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// simply use what we have and let the writer decide if the speeds are empty
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if( !speeds.isEmpty() ) {
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// start with the highest speed and go down the list until we are below our max
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TQValueListIterator<int> it = speeds.end();
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--it;
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while( *it > maxSpeed && it != speeds.begin() )
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--it;
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// this is the first valid speed or the lowest supported one
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s = *it;
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kdDebug() << "(K3bAudioMaxSpeedJob) using speed factor: " << (s/175) << endl;
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}
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return s;
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}
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K3bAudioMaxSpeedJob::K3bAudioMaxSpeedJob( K3bAudioDoc* doc, K3bJobHandler* jh, TQObject* parent, const char* name )
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: K3bThreadJob( jh, parent, name )
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{
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m_thread = new WorkThread( doc );
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setThread( m_thread );
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}
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K3bAudioMaxSpeedJob::~K3bAudioMaxSpeedJob()
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{
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delete m_thread;
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}
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int K3bAudioMaxSpeedJob::maxSpeed() const
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{
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return m_thread->maxSpeedByMedia();
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}
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#include "k3baudiomaxspeedjob.moc"
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