source: trunk/libtransmission/inout.h @ 6073

Last change on this file since 6073 was 6073, checked in by charles, 13 years ago

#800 initial support for GetRight?-style fetching of data through http and ftp servers specified in the .torrent's "url-list" tag

  • Property svn:keywords set to Date Rev Author Id
File size: 2.8 KB
Line 
1/******************************************************************************
2 * $Id: inout.h 6073 2008-06-07 21:26:41Z charles $
3 *
4 * Copyright (c) 2005-2008 Transmission authors and contributors
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *****************************************************************************/
24
25#ifndef TR_IO_H
26#define TR_IO_H 1
27
28struct tr_torrent;
29
30/**
31 * Reads the block specified by the piece index, offset, and length.
32 * @return 0 on success, TR_ERROR_ASSERT if the arguments are incorrect,
33 * or TR_ERROR_IO_* otherwise.
34 */
35tr_errno tr_ioRead( const struct tr_torrent  * tor,
36                    tr_piece_index_t           pieceIndex,
37                    uint32_t                   offset,
38                    uint32_t                   len,
39                    uint8_t                  * setme );
40
41/**
42 * Writes the block specified by the piece index, offset, and length.
43 * @return 0 on success, TR_ERROR_ASSERT if the arguments are incorrect,
44 * or TR_ERROR_IO_* otherwise.
45 */
46tr_errno tr_ioWrite( const struct tr_torrent  * tor,
47                     tr_piece_index_t           pieceIndex,
48                     uint32_t                   offset,
49                     uint32_t                   len,
50                     const uint8_t            * writeme );
51
52/**
53 * returns 0 if the piece matches its metainfo's SHA1 checksum,
54 * or TR_ERROR_IO_* if there was a problem reading the piece,
55 * or TR_ERROR if the checksum didn't match.
56 */
57tr_errno tr_ioTestPiece( const tr_torrent*, int piece );
58
59
60/**
61 * Converts a piece index + offset into a file index + offset.
62 */
63void tr_ioFindFileLocation( const tr_torrent * tor,
64                            tr_piece_index_t   pieceIndex,
65                            uint32_t           pieceOffset,
66                            tr_file_index_t  * fileIndex,
67                            uint64_t         * fileOffset );
68
69
70
71#endif
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