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update the function filter_file

This commit is contained in:
spyhole 2005-07-04 15:31:27 +00:00
parent b4a2cc645f
commit 6f698e98a5
1 changed files with 32 additions and 17 deletions
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49
src/torrent.cpp
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@ -632,29 +632,44 @@ namespace libtorrent
m_picker->filtered_pieces(bitmask);
}
//idea from Arvid and MooPolice
//todo refactoring and improving the function body
//suggest using this function on filter single file after the downloading progress
//that is after called filter_files function
//or tmp to change a single file filter policy
void torrent::filter_file(int index, bool filter)
{
__int64 start_position = 0;
int start_piece_index = 0;
int end_piece_index = 0;
// this call is only valid on torrents with metadata
if (!valid_metadata()) return;
try
{
__int64 position = 0, start, piece_length;
int start_piece, end_piece;
for(int i=0;i<index;i++)
{
start_position += m_torrent_file.file_at(i).size;
}
start_position = start_position+1;
if (0 < m_torrent_file.num_pieces())
{
piece_length = m_torrent_file.piece_length();
start_piece_index = start_position/(m_torrent_file.piece_length());
end_piece_index = start_piece_index + m_torrent_file.file_at(index).size/(m_torrent_file.piece_length());
for (int i = 0;i < index;++i)
{
start = position;
position += m_torrent_file.file_at(i).size;
}
for(int filter_piece_index= start_piece_index;filter_piece_index<end_piece_index;filter_piece_index++)
{
filter_piece(filter_piece_index, filter);
}
start_piece = (int)(start / piece_length);
end_piece = (int)(position / piece_length);
for (int filter_index = start_piece;filter_index <= end_piece;++filter_index)
{
filter_piece(filter_index, filter);
}
}
}
catch (...)
{
}
}
//suggest using this function on filter all files of a torrent file
//suggest using this functon as the global static filter policy of a torrent file
void torrent::filter_files(std::vector<bool> const& bitmask)
{
// this call is only valid on torrents with metadata
@ -664,7 +679,7 @@ namespace libtorrent
__int64 position = 0, start, piece_length;
int start_piece, end_piece;
if (m_torrent_file.num_pieces())
if (0 < m_torrent_file.num_pieces())
{
piece_length = m_torrent_file.piece_length();
std::vector<bool> vector_filter_files(m_torrent_file.num_pieces(), false);