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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 <libsigrokdecode/libsigrokdecode.h> | |
24 | ||
25 | #include <iostream> | |
26 | ||
27 | namespace Srf | |
28 | { | |
29 | ||
30 | using namespace std; | |
31 | using namespace std::placeholders; | |
32 | ||
33 | void init() | |
34 | { | |
35 | Gst::Plugin::register_static(GST_VERSION_MAJOR, GST_VERSION_MINOR, | |
36 | "sigrok_legacy_capture_device", | |
37 | "Wrapper for capture devices using legacy libsigrok APIs", | |
38 | sigc::ptr_fun(&LegacyCaptureDevice::register_element), | |
39 | "0.01", "GPL", "sigrok", "libsigrokflow", "http://sigrok.org"); | |
40 | Gst::Plugin::register_static(GST_VERSION_MAJOR, GST_VERSION_MINOR, | |
41 | "sigrok_legacy_output", | |
42 | "Wrapper for outputs using legacy libsigrok APIs", | |
43 | sigc::ptr_fun(&LegacyOutput::register_element), | |
44 | "0.01", "GPL", "sigrok", "libsigrokflow", "http://sigrok.org"); | |
45 | Gst::Plugin::register_static(GST_VERSION_MAJOR, GST_VERSION_MINOR, | |
46 | "sigrok_legacy_decoder", | |
47 | "Wrapper for protocol decoders using legacy libsigrokdecode APIs", | |
48 | sigc::ptr_fun(&LegacyDecoder::register_element), | |
49 | "0.01", "GPL", "sigrok", "libsigrokflow", "http://sigrok.org"); | |
50 | } | |
51 | ||
52 | Sink::Sink(GstBaseSink *gobj) : | |
53 | Gst::BaseSink(gobj) | |
54 | { | |
55 | } | |
56 | ||
57 | Device::Device(GstElement *gobj) : | |
58 | Gst::Element(gobj) | |
59 | { | |
60 | } | |
61 | ||
62 | CaptureDevice::CaptureDevice(GstElement *gobj) : | |
63 | Device(gobj) | |
64 | { | |
65 | } | |
66 | ||
67 | void LegacyCaptureDevice::class_init(Gst::ElementClass<LegacyCaptureDevice> *klass) | |
68 | { | |
69 | klass->set_metadata("sigrok legacy capture device", | |
70 | "Source", "Wrapper for capture devices using legacy libsigrok APIs", | |
71 | "Martin Ling"); | |
72 | ||
73 | klass->add_pad_template(Gst::PadTemplate::create( | |
74 | "src", | |
75 | Gst::PAD_SRC, | |
76 | Gst::PAD_ALWAYS, | |
77 | Gst::Caps::create_any())); | |
78 | } | |
79 | ||
80 | bool LegacyCaptureDevice::register_element(Glib::RefPtr<Gst::Plugin> plugin) | |
81 | { | |
82 | Gst::ElementFactory::register_element(plugin, "sigrok_legacy_capture_device", | |
83 | 0, Gst::register_mm_type<LegacyCaptureDevice>( | |
84 | "sigrok_legacy_capture_device")); | |
85 | return true; | |
86 | } | |
87 | ||
88 | LegacyCaptureDevice::LegacyCaptureDevice(GstElement *gobj) : | |
89 | Glib::ObjectBase(typeid(LegacyCaptureDevice)), | |
90 | CaptureDevice(gobj) | |
91 | { | |
92 | add_pad(_src_pad = Gst::Pad::create(get_pad_template("src"), "src")); | |
93 | } | |
94 | ||
95 | Glib::RefPtr<LegacyCaptureDevice>LegacyCaptureDevice::create( | |
96 | shared_ptr<sigrok::HardwareDevice> libsigrok_device) | |
97 | { | |
98 | auto element = Gst::ElementFactory::create_element("sigrok_legacy_capture_device"); | |
99 | if (!element) | |
100 | throw runtime_error("Failed to create element - plugin not registered?"); | |
101 | auto device = Glib::RefPtr<LegacyCaptureDevice>::cast_static(element); | |
102 | device->_libsigrok_device = libsigrok_device; | |
103 | return device; | |
104 | } | |
105 | ||
106 | shared_ptr<sigrok::HardwareDevice> LegacyCaptureDevice::libsigrok_device() | |
107 | { | |
108 | return _libsigrok_device; | |
109 | } | |
110 | ||
111 | Gst::StateChangeReturn LegacyCaptureDevice::change_state_vfunc(Gst::StateChange transition) | |
112 | { | |
113 | switch (transition) | |
114 | { | |
115 | case Gst::STATE_CHANGE_READY_TO_PAUSED: | |
116 | return Gst::StateChangeReturn::STATE_CHANGE_NO_PREROLL; | |
117 | case Gst::STATE_CHANGE_PAUSED_TO_PLAYING: | |
118 | _task = Gst::Task::create(std::bind(&LegacyCaptureDevice::_run, this)); | |
119 | _task->set_lock(_mutex); | |
120 | _src_pad->set_active(true); | |
121 | _task->start(); | |
122 | return Gst::STATE_CHANGE_SUCCESS; | |
123 | default: | |
124 | return Gst::STATE_CHANGE_SUCCESS; | |
125 | } | |
126 | } | |
127 | ||
128 | void LegacyCaptureDevice::_datafeed_callback( | |
129 | shared_ptr<sigrok::Device> device, | |
130 | shared_ptr<sigrok::Packet> packet) | |
131 | { | |
132 | (void) device; | |
133 | switch (packet->type()->id()) { | |
134 | case SR_DF_LOGIC: | |
135 | { | |
136 | auto logic = static_pointer_cast<sigrok::Logic>(packet->payload()); | |
137 | auto mem = Gst::Memory::create( | |
138 | Gst::MEMORY_FLAG_READONLY, | |
139 | logic->data_pointer(), | |
140 | logic->data_length(), | |
141 | 0, | |
142 | logic->data_length()); | |
143 | auto buf = Gst::Buffer::create(); | |
144 | buf->append_memory(move(mem)); | |
145 | _src_pad->push(move(buf)); | |
146 | break; | |
147 | } | |
148 | case SR_DF_END: | |
149 | _session->stop(); | |
150 | _src_pad->push_event(Gst::EventEos::create()); | |
151 | break; | |
152 | default: | |
153 | break; | |
154 | } | |
155 | } | |
156 | ||
157 | void LegacyCaptureDevice::_run() | |
158 | { | |
159 | _session = _libsigrok_device->driver()->parent()->create_session(); | |
160 | _session->add_device(_libsigrok_device); | |
161 | _session->add_datafeed_callback(bind(&LegacyCaptureDevice::_datafeed_callback, this, _1, _2)); | |
162 | _session->start(); | |
163 | _session->run(); | |
164 | _task->stop(); | |
165 | } | |
166 | ||
167 | void LegacyOutput::class_init(Gst::ElementClass<LegacyOutput> *klass) | |
168 | { | |
169 | klass->set_metadata("sigrok legacy output", | |
170 | "Sink", "Wrapper for outputs using legacy libsigrok APIs", | |
171 | "Martin Ling"); | |
172 | ||
173 | klass->add_pad_template(Gst::PadTemplate::create( | |
174 | "sink", | |
175 | Gst::PAD_SINK, | |
176 | Gst::PAD_ALWAYS, | |
177 | Gst::Caps::create_any())); | |
178 | } | |
179 | ||
180 | bool LegacyOutput::register_element(Glib::RefPtr<Gst::Plugin> plugin) | |
181 | { | |
182 | Gst::ElementFactory::register_element(plugin, "sigrok_legacy_output", | |
183 | 0, Gst::register_mm_type<LegacyOutput>( | |
184 | "sigrok_legacy_output")); | |
185 | return true; | |
186 | } | |
187 | ||
188 | LegacyOutput::LegacyOutput(GstBaseSink *gobj) : | |
189 | Glib::ObjectBase(typeid(LegacyOutput)), | |
190 | Sink(gobj) | |
191 | { | |
192 | } | |
193 | ||
194 | Glib::RefPtr<LegacyOutput>LegacyOutput::create( | |
195 | shared_ptr<sigrok::OutputFormat> libsigrok_output_format, | |
196 | shared_ptr<sigrok::Device> libsigrok_device, | |
197 | map<string, Glib::VariantBase> options) | |
198 | { | |
199 | auto element = Gst::ElementFactory::create_element("sigrok_legacy_output"); | |
200 | if (!element) | |
201 | throw runtime_error("Failed to create element - plugin not registered?"); | |
202 | auto output = Glib::RefPtr<LegacyOutput>::cast_static(element); | |
203 | output->_libsigrok_output_format = libsigrok_output_format; | |
204 | output->_libsigrok_device = libsigrok_device; | |
205 | output->_options = options; | |
206 | return output; | |
207 | } | |
208 | ||
209 | bool LegacyOutput::start_vfunc() | |
210 | { | |
211 | _libsigrok_output = _libsigrok_output_format->create_output( | |
212 | _libsigrok_device, _options); | |
213 | return true; | |
214 | } | |
215 | ||
216 | Gst::FlowReturn LegacyOutput::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer) | |
217 | { | |
218 | Gst::MapInfo info; | |
219 | buffer->map(info, Gst::MAP_READ); | |
220 | auto context = _libsigrok_output_format->parent(); | |
221 | auto packet = context->create_logic_packet( | |
222 | info.get_data(), info.get_size(), 2); | |
223 | auto result = _libsigrok_output->receive(packet); | |
224 | cout << result; | |
225 | buffer->unmap(info); | |
226 | return Gst::FLOW_OK; | |
227 | } | |
228 | ||
229 | bool LegacyOutput::stop_vfunc() | |
230 | { | |
231 | auto context = _libsigrok_output_format->parent(); | |
232 | auto end_packet = context->create_end_packet(); | |
233 | auto result = _libsigrok_output->receive(end_packet); | |
234 | cout << result; | |
235 | return true; | |
236 | } | |
237 | ||
238 | void LegacyDecoder::class_init(Gst::ElementClass<LegacyDecoder> *klass) | |
239 | { | |
240 | klass->set_metadata("sigrok legacy decoder", | |
241 | "Sink", "Wrapper for protocol decoders using legacy libsigrokdecode APIs", | |
242 | "Uwe Hermann"); | |
243 | ||
244 | klass->add_pad_template(Gst::PadTemplate::create( | |
245 | "sink", | |
246 | Gst::PAD_SINK, | |
247 | Gst::PAD_ALWAYS, | |
248 | Gst::Caps::create_any())); | |
249 | } | |
250 | ||
251 | bool LegacyDecoder::register_element(Glib::RefPtr<Gst::Plugin> plugin) | |
252 | { | |
253 | Gst::ElementFactory::register_element(plugin, "sigrok_legacy_decoder", | |
254 | 0, Gst::register_mm_type<LegacyDecoder>( | |
255 | "sigrok_legacy_decoder")); | |
256 | return true; | |
257 | } | |
258 | ||
259 | LegacyDecoder::LegacyDecoder(GstBaseSink *gobj) : | |
260 | Glib::ObjectBase(typeid(LegacyDecoder)), | |
261 | Sink(gobj) | |
262 | { | |
263 | } | |
264 | ||
265 | Glib::RefPtr<LegacyDecoder>LegacyDecoder::create( | |
266 | struct srd_session *libsigrokdecode_session, uint64_t unitsize) | |
267 | { | |
268 | auto element = Gst::ElementFactory::create_element("sigrok_legacy_decoder"); | |
269 | if (!element) | |
270 | throw runtime_error("Failed to create element - plugin not registered?"); | |
271 | auto decoder = Glib::RefPtr<LegacyDecoder>::cast_static(element); | |
272 | decoder->_session = libsigrokdecode_session; | |
273 | decoder->_unitsize = unitsize; | |
274 | return decoder; | |
275 | } | |
276 | ||
277 | struct srd_session *LegacyDecoder::libsigrokdecode_session() | |
278 | { | |
279 | return _session; | |
280 | } | |
281 | ||
282 | Gst::FlowReturn LegacyDecoder::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer) | |
283 | { | |
284 | Gst::MapInfo info; | |
285 | buffer->map(info, Gst::MAP_READ); | |
286 | uint64_t num_samples = info.get_size() / _unitsize; | |
287 | srd_session_send(_session, _abs_ss, _abs_ss + num_samples, | |
288 | info.get_data(), info.get_size(), _unitsize); | |
289 | _abs_ss += num_samples; | |
290 | buffer->unmap(info); | |
291 | return Gst::FLOW_OK; | |
292 | } | |
293 | ||
294 | bool LegacyDecoder::start_vfunc() | |
295 | { | |
296 | _abs_ss = 0; | |
297 | srd_session_start(_session); | |
298 | return true; | |
299 | } | |
300 | ||
301 | bool LegacyDecoder::stop_vfunc() | |
302 | { | |
303 | srd_session_terminate_reset(_session); | |
304 | return true; | |
305 | } | |
306 | ||
307 | } |