93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
/*
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* This file Copyright (C) Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#pragma once
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#ifndef __TRANSMISSION__
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#error only libtransmission should #include this header.
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#endif
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#include <vector>
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#include "transmission.h"
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#include "bitfield.h"
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struct tr_block_info;
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class tr_file_piece_map
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{
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public:
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template<typename T>
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struct index_span_t
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{
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T begin;
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T end;
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};
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using file_span_t = index_span_t<tr_file_index_t>;
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using piece_span_t = index_span_t<tr_piece_index_t>;
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tr_file_piece_map(tr_info const& info)
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{
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reset(info);
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}
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tr_file_piece_map(tr_block_info const& block_info, uint64_t const* file_sizes, size_t n_files)
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{
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reset(block_info, file_sizes, n_files);
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}
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void reset(tr_block_info const& block_info, uint64_t const* file_sizes, size_t n_files);
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void reset(tr_info const& info);
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[[nodiscard]] piece_span_t pieceSpan(tr_file_index_t file) const;
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[[nodiscard]] file_span_t fileSpan(tr_piece_index_t piece) const;
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[[nodiscard]] size_t size() const
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{
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return std::size(files_);
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}
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private:
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std::vector<piece_span_t> files_;
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};
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class tr_file_priorities
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{
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public:
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explicit tr_file_priorities(tr_file_piece_map const* fpm);
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void reset(tr_file_piece_map const*);
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void set(tr_file_index_t file, tr_priority_t priority);
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void set(tr_file_index_t const* files, size_t n, tr_priority_t priority);
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[[nodiscard]] tr_priority_t filePriority(tr_file_index_t file) const;
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[[nodiscard]] tr_priority_t piecePriority(tr_piece_index_t piece) const;
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private:
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tr_file_piece_map const* fpm_;
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std::vector<tr_priority_t> priorities_;
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};
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class tr_files_wanted
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{
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public:
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explicit tr_files_wanted(tr_file_piece_map const* fpm)
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: wanted_(std::size(*fpm))
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{
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reset(fpm);
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}
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void reset(tr_file_piece_map const* fpm);
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void set(tr_file_index_t file, bool wanted);
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void set(tr_file_index_t const* files, size_t n, bool wanted);
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[[nodiscard]] bool fileWanted(tr_file_index_t file) const;
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[[nodiscard]] bool pieceWanted(tr_piece_index_t piece) const;
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private:
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tr_file_piece_map const* fpm_;
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tr_bitfield wanted_;
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};
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