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1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2014 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 | ||
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | #include <unistd.h> | |
26 | ||
27 | #include "inputfile.h" | |
28 | ||
29 | #include <libsigrok/libsigrok.h> | |
30 | ||
31 | using std::string; | |
32 | ||
33 | namespace pv { | |
34 | namespace device { | |
35 | ||
36 | InputFile::InputFile(const std::string &path) : | |
37 | File(path), | |
38 | _input(NULL) | |
39 | { | |
40 | } | |
41 | ||
42 | sr_dev_inst* InputFile::dev_inst() const | |
43 | { | |
44 | assert(_input); | |
45 | return _input->sdi; | |
46 | } | |
47 | ||
48 | void InputFile::use(SigSession *owner) throw(QString) | |
49 | { | |
50 | assert(!_input); | |
51 | ||
52 | _input = load_input_file_format(_path, NULL); | |
53 | File::use(owner); | |
54 | ||
55 | sr_session_new(); | |
56 | ||
57 | if (sr_session_dev_add(_input->sdi) != SR_OK) | |
58 | throw tr("Failed to add session device."); | |
59 | } | |
60 | ||
61 | void InputFile::release() | |
62 | { | |
63 | if (!_owner) | |
64 | return; | |
65 | ||
66 | assert(_input); | |
67 | File::release(); | |
68 | sr_dev_close(_input->sdi); | |
69 | sr_session_destroy(); | |
70 | _input = NULL; | |
71 | } | |
72 | ||
73 | sr_input_format* InputFile::determine_input_file_format( | |
74 | const string &filename) | |
75 | { | |
76 | int i; | |
77 | ||
78 | /* If there are no input formats, return NULL right away. */ | |
79 | sr_input_format *const *const inputs = sr_input_list(); | |
80 | if (!inputs) { | |
81 | g_critical("No supported input formats available."); | |
82 | return NULL; | |
83 | } | |
84 | ||
85 | /* Otherwise, try to find an input module that can handle this file. */ | |
86 | for (i = 0; inputs[i]; i++) { | |
87 | if (inputs[i]->format_match(filename.c_str())) | |
88 | break; | |
89 | } | |
90 | ||
91 | /* Return NULL if no input module wanted to touch this. */ | |
92 | if (!inputs[i]) { | |
93 | g_critical("Error: no matching input module found."); | |
94 | return NULL; | |
95 | } | |
96 | ||
97 | return inputs[i]; | |
98 | } | |
99 | ||
100 | sr_input* InputFile::load_input_file_format(const string &filename, | |
101 | sr_input_format *format) | |
102 | { | |
103 | struct stat st; | |
104 | sr_input *in; | |
105 | ||
106 | if (!format && !(format = | |
107 | determine_input_file_format(filename.c_str()))) { | |
108 | /* The exact cause was already logged. */ | |
109 | throw tr("Failed to load file"); | |
110 | } | |
111 | ||
112 | if (stat(filename.c_str(), &st) == -1) | |
113 | throw tr("Failed to load file"); | |
114 | ||
115 | /* Initialize the input module. */ | |
116 | if (!(in = new sr_input)) { | |
117 | throw tr("Failed to allocate input module."); | |
118 | } | |
119 | ||
120 | in->format = format; | |
121 | in->param = NULL; | |
122 | if (in->format->init && | |
123 | in->format->init(in, filename.c_str()) != SR_OK) { | |
124 | throw tr("Failed to load file"); | |
125 | } | |
126 | ||
127 | return in; | |
128 | } | |
129 | ||
130 | void InputFile::start() | |
131 | { | |
132 | } | |
133 | ||
134 | void InputFile::run() | |
135 | { | |
136 | assert(_input); | |
137 | assert(_input->format); | |
138 | assert(_input->format->loadfile); | |
139 | _input->format->loadfile(_input, _path.c_str()); | |
140 | } | |
141 | ||
142 | } // device | |
143 | } // pv |