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/***************************************************************************
* Copyright (C) 2005 by *
* Joris Guisson <joris.guisson@gmail.com> *
* Ivan Vasic <ivasic@gmail.com> *
* *
* This program 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 program 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 program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <math.h>
#include <util/log.h>
#include <util/bitset.h>
#include <util/functions.h>
#include "globals.h"
#include "torrentfile.h"
namespace bt
{
TorrentFile::TorrentFile() : TorrentFileInterface(QString::null,0),missing(false),filetype(UNKNOWN)
{}
TorrentFile::TorrentFile(Uint32 index,const QString & path,
Uint64 off,Uint64 size,Uint64 chunk_size)
: TorrentFileInterface(path,size),index(index),cache_offset(off),missing(false),filetype(UNKNOWN)
{
first_chunk = off / chunk_size;
first_chunk_off = off % chunk_size;
if (size > 0)
last_chunk = (off + size - 1) / chunk_size;
else
last_chunk = first_chunk;
last_chunk_size = (off + size) - last_chunk * chunk_size;
priority = old_priority = NORMAL_PRIORITY;
}
TorrentFile::TorrentFile(const TorrentFile & tf)
: TorrentFileInterface(QString::null,0)
{
index = tf.getIndex();
path = tf.getPath();
size = tf.getSize();
cache_offset = tf.getCacheOffset();
first_chunk = tf.getFirstChunk();
first_chunk_off = tf.getFirstChunkOffset();
last_chunk = tf.getLastChunk();
last_chunk_size = tf.getLastChunkSize();
old_priority = priority = tf.getPriority();
missing = tf.isMissing();
filetype = UNKNOWN;
}
TorrentFile::~TorrentFile()
{}
void TorrentFile::setDoNotDownload(bool dnd)
{
if (priority != EXCLUDED && dnd)
{
if(m_emitDlStatusChanged)
old_priority = priority;
priority = EXCLUDED;
if(m_emitDlStatusChanged)
emit downloadPriorityChanged(this,priority,old_priority);
}
if (priority == EXCLUDED && (!dnd))
{
if(m_emitDlStatusChanged)
old_priority = priority;
priority = NORMAL_PRIORITY;
if(m_emitDlStatusChanged)
emit downloadPriorityChanged(this,priority,old_priority);
}
}
void TorrentFile::emitDownloadStatusChanged()
{
// only emit when old_priority is not equal to the new priority
if (priority != old_priority)
emit downloadPriorityChanged(this,priority,old_priority);
}
bool TorrentFile::isMultimedia() const
{
if (filetype == UNKNOWN)
{
if (IsMultimediaFile(getPath()))
{
filetype = MULTIMEDIA;
return true;
}
else
{
filetype = NORMAL;
return false;
}
}
return filetype == MULTIMEDIA;
}
void TorrentFile::setPriority(Priority newpriority)
{
if(priority != newpriority)
{
if (priority == EXCLUDED)
{
setDoNotDownload(false);
}
if (newpriority == EXCLUDED)
{
setDoNotDownload(true);
}
else
{
old_priority = priority;
priority = newpriority;
emit downloadPriorityChanged(this,newpriority,old_priority);
}
}
}
TorrentFile & TorrentFile::operator = (const TorrentFile & tf)
{
index = tf.getIndex();
path = tf.getPath();
size = tf.getSize();
cache_offset = tf.getCacheOffset();
first_chunk = tf.getFirstChunk();
first_chunk_off = tf.getFirstChunkOffset();
last_chunk = tf.getLastChunk();
last_chunk_size = tf.getLastChunkSize();
priority = tf.getPriority();
missing = tf.isMissing();
return *this;
}
TorrentFile TorrentFile::null;
Uint64 TorrentFile::fileOffset(Uint32 cindex,Uint64 chunk_size) const
{
Uint64 off = 0;
if (getFirstChunkOffset() == 0)
{
off = (cindex - getFirstChunk()) * chunk_size;
}
else
{
if (cindex - this->getFirstChunk() > 0)
off = (cindex - this->getFirstChunk() - 1) * chunk_size;
if (cindex > 0)
off += (chunk_size - this->getFirstChunkOffset());
}
return off;
}
void TorrentFile::updateNumDownloadedChunks(const BitSet & bs)
{
float p = getDownloadPercentage();
num_chunks_downloaded = 0;
bool prev = preview;
preview = true;
for (Uint32 i = first_chunk;i <= last_chunk;i++)
{
if (bs.get(i))
{
num_chunks_downloaded++;
}
else if (i == first_chunk || i == first_chunk + 1)
{
preview = false;
}
}
preview = isMultimedia() && preview;
float np = getDownloadPercentage();
if (fabs(np - p) >= 0.01f)
downloadPercentageChanged(np);
if (prev != preview)
previewAvailable(preview);
}
}
#include "torrentfile.moc"
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