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5237f0c5 JH |
1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2015 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <cassert> | |
22 | #include <fstream> | |
23 | ||
24 | #include <QString> | |
25 | ||
26 | #include "inputfile.hpp" | |
27 | ||
28 | namespace pv { | |
29 | namespace devices { | |
30 | ||
31 | const std::streamsize InputFile::BufferSize = 16384; | |
32 | ||
33 | InputFile::InputFile(const std::shared_ptr<sigrok::Context> &context, | |
34 | const std::string &file_name, | |
35 | std::shared_ptr<sigrok::InputFormat> format, | |
36 | const std::map<std::string, Glib::VariantBase> &options) : | |
dd3fd4df | 37 | File(file_name), |
5237f0c5 JH |
38 | context_(context), |
39 | input_(format->create_input(options)), | |
2ad82c2e UH |
40 | interrupt_(false) |
41 | { | |
5237f0c5 JH |
42 | if (!input_) |
43 | throw QString("Failed to create input"); | |
44 | } | |
45 | ||
2ad82c2e UH |
46 | void InputFile::open() |
47 | { | |
4d6c6ea3 SA |
48 | if (session_) |
49 | close(); | |
50 | ||
5237f0c5 JH |
51 | session_ = context_->create_session(); |
52 | } | |
53 | ||
2ad82c2e UH |
54 | void InputFile::close() |
55 | { | |
4d6c6ea3 SA |
56 | if (session_) |
57 | session_->remove_devices(); | |
58 | } | |
59 | ||
2ad82c2e UH |
60 | void InputFile::start() |
61 | { | |
5237f0c5 JH |
62 | } |
63 | ||
2ad82c2e UH |
64 | void InputFile::run() |
65 | { | |
5237f0c5 JH |
66 | char buffer[BufferSize]; |
67 | bool need_device = true; | |
68 | ||
69 | assert(session_); | |
70 | assert(input_); | |
71 | ||
72 | interrupt_ = false; | |
c8e50b6e | 73 | std::ifstream f(file_name_, std::ios::binary); |
5237f0c5 JH |
74 | while (!interrupt_ && f) { |
75 | f.read(buffer, BufferSize); | |
76 | const std::streamsize size = f.gcount(); | |
77 | if (size == 0) | |
78 | break; | |
79 | ||
80 | input_->send(buffer, size); | |
81 | ||
82 | if (need_device) { | |
83 | try { | |
84 | device_ = input_->device(); | |
85 | } catch (sigrok::Error) { | |
86 | break; | |
87 | } | |
88 | ||
89 | session_->add_device(device_); | |
90 | need_device = false; | |
91 | } | |
92 | ||
93 | if (size != BufferSize) | |
94 | break; | |
95 | } | |
96 | ||
97 | input_->end(); | |
98 | } | |
99 | ||
2ad82c2e UH |
100 | void InputFile::stop() |
101 | { | |
5237f0c5 JH |
102 | interrupt_ = true; |
103 | } | |
104 | ||
105 | } // namespace devices | |
106 | } // namespace pv |