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1 | /* | |
2 | * This file is part of the libsigrokflow project. | |
3 | * | |
4 | * Copyright (C) 2018 Uwe Hermann <uwe@hermann-uwe.de> | |
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 3 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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <libsigrokflow/libsigrokflow.hpp> | |
22 | ||
23 | #include <iostream> | |
24 | ||
25 | namespace Srf | |
26 | { | |
27 | ||
28 | using namespace std; | |
29 | using namespace std::placeholders; | |
30 | ||
31 | void init() | |
32 | { | |
33 | Gst::Plugin::register_static(GST_VERSION_MAJOR, GST_VERSION_MINOR, | |
34 | "sigrok_legacy_capture_device", | |
35 | "Wrapper for capture devices using legacy libsigrok APIs", | |
36 | sigc::ptr_fun(&LegacyCaptureDevice::register_element), | |
37 | "0.01", "GPL", "sigrok", "libsigrokflow", "http://sigrok.org"); | |
38 | Gst::Plugin::register_static(GST_VERSION_MAJOR, GST_VERSION_MINOR, | |
39 | "sigrok_legacy_output", | |
40 | "Wrapper for outputs using legacy libsigrok APIs", | |
41 | sigc::ptr_fun(&LegacyOutput::register_element), | |
42 | "0.01", "GPL", "sigrok", "libsigrokflow", "http://sigrok.org"); | |
43 | } | |
44 | ||
45 | Sink::Sink(GstBaseSink *gobj) : | |
46 | Gst::BaseSink(gobj) | |
47 | { | |
48 | } | |
49 | ||
50 | Device::Device(GstElement *gobj) : | |
51 | Gst::Element(gobj) | |
52 | { | |
53 | } | |
54 | ||
55 | CaptureDevice::CaptureDevice(GstElement *gobj) : | |
56 | Device(gobj) | |
57 | { | |
58 | } | |
59 | ||
60 | void LegacyCaptureDevice::class_init(Gst::ElementClass<LegacyCaptureDevice> *klass) | |
61 | { | |
62 | klass->set_metadata("sigrok legacy capture device", | |
63 | "Source", "Wrapper for capture devices using legacy libsigrok APIs", | |
64 | "Martin Ling"); | |
65 | ||
66 | klass->add_pad_template(Gst::PadTemplate::create( | |
67 | "src", | |
68 | Gst::PAD_SRC, | |
69 | Gst::PAD_ALWAYS, | |
70 | Gst::Caps::create_any())); | |
71 | } | |
72 | ||
73 | bool LegacyCaptureDevice::register_element(Glib::RefPtr<Gst::Plugin> plugin) | |
74 | { | |
75 | Gst::ElementFactory::register_element(plugin, "sigrok_legacy_capture_device", | |
76 | 0, Gst::register_mm_type<LegacyCaptureDevice>( | |
77 | "sigrok_legacy_capture_device")); | |
78 | return true; | |
79 | } | |
80 | ||
81 | LegacyCaptureDevice::LegacyCaptureDevice(GstElement *gobj) : | |
82 | Glib::ObjectBase(typeid(LegacyCaptureDevice)), | |
83 | CaptureDevice(gobj) | |
84 | { | |
85 | add_pad(_src_pad = Gst::Pad::create(get_pad_template("src"), "src")); | |
86 | } | |
87 | ||
88 | Glib::RefPtr<LegacyCaptureDevice>LegacyCaptureDevice::create( | |
89 | shared_ptr<sigrok::HardwareDevice> libsigrok_device) | |
90 | { | |
91 | auto element = Gst::ElementFactory::create_element("sigrok_legacy_capture_device"); | |
92 | if (!element) | |
93 | throw runtime_error("Failed to create element - plugin not registered?"); | |
94 | auto device = Glib::RefPtr<LegacyCaptureDevice>::cast_static(element); | |
95 | device->_libsigrok_device = libsigrok_device; | |
96 | return device; | |
97 | } | |
98 | ||
99 | shared_ptr<sigrok::HardwareDevice> LegacyCaptureDevice::libsigrok_device() | |
100 | { | |
101 | return _libsigrok_device; | |
102 | } | |
103 | ||
104 | Gst::StateChangeReturn LegacyCaptureDevice::change_state_vfunc(Gst::StateChange transition) | |
105 | { | |
106 | switch (transition) | |
107 | { | |
108 | case Gst::STATE_CHANGE_READY_TO_PAUSED: | |
109 | return Gst::StateChangeReturn::STATE_CHANGE_NO_PREROLL; | |
110 | case Gst::STATE_CHANGE_PAUSED_TO_PLAYING: | |
111 | _task = Gst::Task::create(std::bind(&LegacyCaptureDevice::_run, this)); | |
112 | _task->set_lock(_mutex); | |
113 | _src_pad->set_active(true); | |
114 | _task->start(); | |
115 | return Gst::STATE_CHANGE_SUCCESS; | |
116 | default: | |
117 | return Gst::STATE_CHANGE_SUCCESS; | |
118 | } | |
119 | } | |
120 | ||
121 | void LegacyCaptureDevice::_datafeed_callback( | |
122 | shared_ptr<sigrok::Device> device, | |
123 | shared_ptr<sigrok::Packet> packet) | |
124 | { | |
125 | (void) device; | |
126 | switch (packet->type()->id()) { | |
127 | case SR_DF_LOGIC: | |
128 | { | |
129 | auto logic = static_pointer_cast<sigrok::Logic>(packet->payload()); | |
130 | auto mem = Gst::Memory::create( | |
131 | Gst::MEMORY_FLAG_READONLY, | |
132 | logic->data_pointer(), | |
133 | logic->data_length(), | |
134 | 0, | |
135 | logic->data_length()); | |
136 | auto buf = Gst::Buffer::create(); | |
137 | buf->append_memory(move(mem)); | |
138 | _src_pad->push(move(buf)); | |
139 | break; | |
140 | } | |
141 | case SR_DF_END: | |
142 | _session->stop(); | |
143 | _src_pad->push_event(Gst::EventEos::create()); | |
144 | break; | |
145 | default: | |
146 | break; | |
147 | } | |
148 | } | |
149 | ||
150 | void LegacyCaptureDevice::_run() | |
151 | { | |
152 | _session = _libsigrok_device->driver()->parent()->create_session(); | |
153 | _session->add_device(_libsigrok_device); | |
154 | _session->add_datafeed_callback(bind(&LegacyCaptureDevice::_datafeed_callback, this, _1, _2)); | |
155 | _session->start(); | |
156 | _session->run(); | |
157 | _task->stop(); | |
158 | } | |
159 | ||
160 | void LegacyOutput::class_init(Gst::ElementClass<LegacyOutput> *klass) | |
161 | { | |
162 | klass->set_metadata("sigrok legacy output", | |
163 | "Sink", "Wrapper for outputs using legacy libsigrok APIs", | |
164 | "Martin Ling"); | |
165 | ||
166 | klass->add_pad_template(Gst::PadTemplate::create( | |
167 | "sink", | |
168 | Gst::PAD_SINK, | |
169 | Gst::PAD_ALWAYS, | |
170 | Gst::Caps::create_any())); | |
171 | } | |
172 | ||
173 | bool LegacyOutput::register_element(Glib::RefPtr<Gst::Plugin> plugin) | |
174 | { | |
175 | Gst::ElementFactory::register_element(plugin, "sigrok_legacy_output", | |
176 | 0, Gst::register_mm_type<LegacyOutput>( | |
177 | "sigrok_legacy_output")); | |
178 | return true; | |
179 | } | |
180 | ||
181 | LegacyOutput::LegacyOutput(GstBaseSink *gobj) : | |
182 | Glib::ObjectBase(typeid(LegacyOutput)), | |
183 | Sink(gobj) | |
184 | { | |
185 | add_pad(_sink_pad = Gst::Pad::create(get_pad_template("sink"), "sink")); | |
186 | } | |
187 | ||
188 | Glib::RefPtr<LegacyOutput>LegacyOutput::create( | |
189 | shared_ptr<sigrok::Output> libsigrok_output) | |
190 | { | |
191 | auto element = Gst::ElementFactory::create_element("sigrok_legacy_output"); | |
192 | if (!element) | |
193 | throw runtime_error("Failed to create element - plugin not registered?"); | |
194 | auto output = Glib::RefPtr<LegacyOutput>::cast_static(element); | |
195 | output->_libsigrok_output = libsigrok_output; | |
196 | return output; | |
197 | } | |
198 | ||
199 | shared_ptr<sigrok::Output> LegacyOutput::libsigrok_output() | |
200 | { | |
201 | return _libsigrok_output; | |
202 | } | |
203 | ||
204 | Gst::FlowReturn LegacyOutput::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer) | |
205 | { | |
206 | Gst::MapInfo info; | |
207 | buffer->map(info, Gst::MAP_READ); | |
208 | auto context = _libsigrok_output->format()->parent(); | |
209 | auto packet = context->create_logic_packet( | |
210 | info.get_data(), info.get_size(), 2); | |
211 | auto result = _libsigrok_output->receive(packet); | |
212 | cout << result; | |
213 | buffer->unmap(info); | |
214 | return Gst::FLOW_OK; | |
215 | } | |
216 | ||
217 | bool LegacyOutput::stop_vfunc() | |
218 | { | |
219 | auto context = _libsigrok_output->format()->parent(); | |
220 | auto end_packet = context->create_end_packet(); | |
221 | auto result = _libsigrok_output->receive(end_packet); | |
222 | cout << result; | |
223 | return true; | |
224 | } | |
225 | ||
226 | } |