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- Made "download first and last piece first" option smarter. It now detects the main file in the torrent and download the first/last pieces of this file. (Thanks Attila Olah for this suggestion).

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This commit is contained in:
Christophe Dumez 2009-11-21 12:35:26 +00:00
parent 6673273830
commit ef4c320af7
3 changed files with 60 additions and 9 deletions
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2
Changelog
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@ -17,7 +17,7 @@
- FEATURE: Display trackers status as well as error/warning messages
- FEATURE: Display the number of peers returned by each tracker & DHT
- FEATURE: Global upload/download speeds can be capped from status bar (µTorrent behavior)
- FEATURE: Added option to download first and last piece of a torrent first (for preview)
- FEATURE: Added option to download first and last piece of a torrent main file first (for preview)
- FEATURE: Dropped Qt 4.3 support (Qt >= 4.4 is now required)
- FEATURE: Added per-torrent super seeding mode (libtorrent >= v0.15 only)
- FEATURE: Support for storing symbolic links in .torrent files (libtorrent >= v0.15 only)

62
src/qtorrenthandle.cpp
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@ -33,9 +33,11 @@
#include <QFile>
#include <QDir>
#include <QByteArray>
#include <math.h>
#include "misc.h"
#include "qtorrenthandle.h"
#include <libtorrent/magnet_uri.hpp>
#include <libtorrent/torrent_info.hpp>
QTorrentHandle::QTorrentHandle(torrent_handle h): h(h) {}
@ -136,7 +138,31 @@ void QTorrentHandle::get_peer_info(std::vector<peer_info>& v) const {
bool QTorrentHandle::first_last_piece_first() const {
Q_ASSERT(h.is_valid());
return (h.piece_priority(0) == 7) && (h.piece_priority(h.get_torrent_info().num_pieces()-1) == 7);
// Detect main file
int rank=0;
int main_file_index = 0;
file_entry main_file = h.get_torrent_info().file_at(0);
torrent_info::file_iterator it = h.get_torrent_info().begin_files();
it++; ++rank;
while(it != h.get_torrent_info().end_files()) {
if(it->size > main_file.size) {
main_file = *it;
main_file_index = rank;
}
it++;
++rank;
}
qDebug("Main file in the torrent is %s", main_file.path.string().c_str());
int piece_size = h.get_torrent_info().piece_length();
Q_ASSERT(piece_size>0);
int first_piece = floor((main_file.offset+1)/(double)piece_size);
Q_ASSERT(first_piece >= 0 && first_piece < h.get_torrent_info().num_pieces());
qDebug("First piece of the file is %d/%d", first_piece, h.get_torrent_info().num_pieces()-1);
int num_pieces_in_file = ceil(main_file.size/(double)piece_size);
int last_piece = first_piece+num_pieces_in_file-1;
Q_ASSERT(last_piece >= 0 && last_piece < h.get_torrent_info().num_pieces());
qDebug("last piece of the file is %d/%d", last_piece, h.get_torrent_info().num_pieces()-1);
return (h.piece_priority(first_piece) == 7) && (h.piece_priority(last_piece) == 7);
}
size_type QTorrentHandle::total_wanted_done() const {
@ -539,10 +565,36 @@ void QTorrentHandle::add_tracker(announce_entry const& url) {
void QTorrentHandle::prioritize_first_last_piece(bool b) {
Q_ASSERT(h.is_valid());
int prio = 1;
if(b) prio = 7;
h.piece_priority(0, prio);
h.piece_priority(h.get_torrent_info().num_pieces()-1, prio);
// Detect main file
int rank=0;
int main_file_index = 0;
file_entry main_file = h.get_torrent_info().file_at(0);
torrent_info::file_iterator it = h.get_torrent_info().begin_files();
it++; ++rank;
while(it != h.get_torrent_info().end_files()) {
if(it->size > main_file.size) {
main_file = *it;
main_file_index = rank;
}
it++;
++rank;
}
qDebug("Main file in the torrent is %s", main_file.path.string().c_str());
// Determine the priority to set
int prio = 7; // MAX
if(!b) prio = h.file_priority(main_file_index);
// Determine the first and last piece of the main file
int piece_size = h.get_torrent_info().piece_length();
Q_ASSERT(piece_size>0);
int first_piece = floor((main_file.offset+1)/(double)piece_size);
Q_ASSERT(first_piece >= 0 && first_piece < h.get_torrent_info().num_pieces());
qDebug("First piece of the file is %d/%d", first_piece, h.get_torrent_info().num_pieces()-1);
int num_pieces_in_file = ceil(main_file.size/(double)piece_size);
int last_piece = first_piece+num_pieces_in_file-1;
Q_ASSERT(last_piece >= 0 && last_piece < h.get_torrent_info().num_pieces());
qDebug("last piece of the file is %d/%d", last_piece, h.get_torrent_info().num_pieces()-1);
h.piece_priority(first_piece, prio);
h.piece_priority(last_piece, prio);
}
//

5
src/transferlistwidget.cpp
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@ -782,7 +782,7 @@ void TransferListWidget::displayListMenu(const QPoint&) {
bool has_pause = false, has_start = false, has_preview = false;
bool all_same_super_seeding = true, all_same_sequential_download_mode = true, all_same_prio_firstlast = true;
bool super_seeding_mode = false, sequential_download_mode = false, prioritize_first_last = false;
bool one_has_metadata = false, one_not_seed = false, one_has_single_file = false;;
bool one_has_metadata = false, one_not_seed = false;
bool first = true;
QTorrentHandle h;
qDebug("Displaying menu");
@ -807,7 +807,6 @@ void TransferListWidget::displayListMenu(const QPoint&) {
all_same_prio_firstlast = false;
}
}
if(h.num_files() == 1) one_has_single_file = true;
} else {
if(!one_not_seed && all_same_super_seeding) {
if(first) {
@ -870,7 +869,7 @@ void TransferListWidget::displayListMenu(const QPoint&) {
listMenu.addAction(&actionSequential_download);
added_preview_action = true;
}
if(all_same_prio_firstlast && one_has_single_file) {
if(all_same_prio_firstlast) {
QIcon ico;
if(prioritize_first_last) {
ico = QIcon(":/Icons/oxygen/button_ok.png");