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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) : | |
37 | File(file_name), | |
38 | context_(context), | |
39 | format_(format), | |
40 | options_(options), | |
41 | interrupt_(false) | |
42 | { | |
43 | } | |
44 | ||
45 | void InputFile::open() | |
46 | { | |
47 | if (session_) | |
48 | close(); | |
49 | else | |
50 | session_ = context_->create_session(); | |
51 | } | |
52 | ||
53 | void InputFile::close() | |
54 | { | |
55 | if (session_) | |
56 | session_->remove_devices(); | |
57 | } | |
58 | ||
59 | void InputFile::start() | |
60 | { | |
61 | } | |
62 | ||
63 | void InputFile::run() | |
64 | { | |
65 | char buffer[BufferSize]; | |
66 | bool need_device = true; | |
67 | ||
68 | assert(session_); | |
69 | ||
70 | input_ = format_->create_input(options_); | |
71 | ||
72 | if (!input_) | |
73 | throw QString("Failed to create input"); | |
74 | ||
75 | interrupt_ = false; | |
76 | std::ifstream f(file_name_, std::ios::binary); | |
77 | while (!interrupt_ && f) { | |
78 | f.read(buffer, BufferSize); | |
79 | const std::streamsize size = f.gcount(); | |
80 | if (size == 0) | |
81 | break; | |
82 | ||
83 | input_->send(buffer, size); | |
84 | ||
85 | if (need_device) { | |
86 | try { | |
87 | device_ = input_->device(); | |
88 | } catch (sigrok::Error) { | |
89 | break; | |
90 | } | |
91 | ||
92 | session_->remove_devices(); // Remove instance from previous run | |
93 | session_->add_device(device_); | |
94 | need_device = false; | |
95 | } | |
96 | ||
97 | if (size != BufferSize) | |
98 | break; | |
99 | } | |
100 | ||
101 | input_->end(); | |
102 | } | |
103 | ||
104 | void InputFile::stop() | |
105 | { | |
106 | interrupt_ = true; | |
107 | } | |
108 | ||
109 | } // namespace devices | |
110 | } // namespace pv |