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119aff65 JH |
1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 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 | ||
e332f6d3 JH |
21 | #include <libsigrokdecode/libsigrokdecode.h> |
22 | ||
92421299 | 23 | #include <boost/bind.hpp> |
7491a29f | 24 | #include <boost/foreach.hpp> |
e0fc5810 JH |
25 | #include <boost/thread/thread.hpp> |
26 | ||
e92cd4e4 JH |
27 | #include <stdexcept> |
28 | ||
b213ef09 JH |
29 | #include <QDebug> |
30 | ||
6e89374a | 31 | #include "decoderstack.h" |
119aff65 | 32 | |
e0fc5810 JH |
33 | #include <pv/data/logic.h> |
34 | #include <pv/data/logicsnapshot.h> | |
7491a29f | 35 | #include <pv/data/decode/decoder.h> |
06e810f2 | 36 | #include <pv/data/decode/annotation.h> |
e0fc5810 | 37 | #include <pv/view/logicsignal.h> |
708c5523 | 38 | |
819f4c25 JH |
39 | using boost::lock_guard; |
40 | using boost::mutex; | |
41 | using boost::shared_ptr; | |
42 | using std::deque; | |
43 | using std::min; | |
44 | using std::list; | |
45 | using std::vector; | |
e332f6d3 | 46 | |
119aff65 JH |
47 | namespace pv { |
48 | namespace data { | |
49 | ||
6e89374a JH |
50 | const double DecoderStack::DecodeMargin = 1.0; |
51 | const double DecoderStack::DecodeThreshold = 0.2; | |
52 | const int64_t DecoderStack::DecodeChunkLength = 4096; | |
e0fc5810 | 53 | |
6e89374a | 54 | mutex DecoderStack::_global_decode_mutex; |
fe89c961 | 55 | |
5dfeb70f JH |
56 | DecoderStack::DecoderStack(const srd_decoder *const dec) : |
57 | _samples_decoded(0) | |
119aff65 | 58 | { |
7491a29f JH |
59 | _stack.push_back(shared_ptr<decode::Decoder>( |
60 | new decode::Decoder(dec))); | |
119aff65 JH |
61 | } |
62 | ||
6e89374a | 63 | DecoderStack::~DecoderStack() |
640d69ce JH |
64 | { |
65 | _decode_thread.interrupt(); | |
66 | _decode_thread.join(); | |
4e5a4405 JH |
67 | } |
68 | ||
7491a29f JH |
69 | const std::list< boost::shared_ptr<decode::Decoder> >& |
70 | DecoderStack::stack() const | |
4e5a4405 | 71 | { |
7491a29f | 72 | return _stack; |
4e5a4405 JH |
73 | } |
74 | ||
7491a29f | 75 | void DecoderStack::push(boost::shared_ptr<decode::Decoder> decoder) |
4e5a4405 | 76 | { |
7491a29f JH |
77 | assert(decoder); |
78 | _stack.push_back(decoder); | |
4e5a4405 JH |
79 | } |
80 | ||
613d097c JH |
81 | void DecoderStack::remove(int index) |
82 | { | |
83 | using pv::data::decode::Decoder; | |
84 | ||
85 | assert(index >= 0); | |
86 | assert(index < (int)_stack.size()); | |
87 | ||
88 | // Find the decoder in the stack | |
89 | list< shared_ptr<Decoder> >::iterator iter = _stack.begin(); | |
90 | for(int i = 0; i < index; i++, iter++) | |
91 | assert(iter != _stack.end()); | |
92 | ||
93 | // Delete the element | |
94 | _stack.erase(iter); | |
95 | } | |
96 | ||
5dfeb70f JH |
97 | int64_t DecoderStack::samples_decoded() const |
98 | { | |
99 | lock_guard<mutex> decode_lock(_mutex); | |
100 | return _samples_decoded; | |
101 | } | |
102 | ||
92421299 JH |
103 | void DecoderStack::get_annotation_subset( |
104 | std::vector<pv::data::decode::Annotation> &dest, | |
105 | uint64_t start_sample, uint64_t end_sample) const | |
e0fc5810 | 106 | { |
b6b267bb | 107 | lock_guard<mutex> lock(_mutex); |
92421299 JH |
108 | |
109 | const vector<size_t>::const_iterator start_iter = | |
110 | lower_bound(_ann_end_index.begin(), | |
111 | _ann_end_index.end(), start_sample, | |
112 | bind(&DecoderStack::index_entry_end_sample_lt, | |
113 | this, _1, _2)); | |
114 | ||
115 | const vector<size_t>::const_iterator end_iter = | |
116 | upper_bound(_ann_start_index.begin(), | |
117 | _ann_start_index.end(), end_sample, | |
118 | bind(&DecoderStack::index_entry_start_sample_gt, | |
119 | this, _1, _2)); | |
120 | ||
121 | for (vector<size_t>::const_iterator i = start_iter; | |
122 | i != _ann_end_index.end() && *i != *end_iter; i++) | |
123 | dest.push_back(_annotations[*i]); | |
e0fc5810 JH |
124 | } |
125 | ||
6e89374a | 126 | QString DecoderStack::error_message() |
b6b267bb JH |
127 | { |
128 | lock_guard<mutex> lock(_mutex); | |
129 | return _error_message; | |
130 | } | |
131 | ||
6e89374a | 132 | void DecoderStack::begin_decode() |
640d69ce | 133 | { |
7491a29f JH |
134 | shared_ptr<pv::view::LogicSignal> logic_signal; |
135 | shared_ptr<pv::data::Logic> data; | |
136 | ||
640d69ce JH |
137 | _decode_thread.interrupt(); |
138 | _decode_thread.join(); | |
139 | ||
5dfeb70f JH |
140 | _samples_decoded = 0; |
141 | ||
92421299 | 142 | clear(); |
4e5a4405 | 143 | |
e0fc5810 JH |
144 | // We get the logic data of the first probe in the list. |
145 | // This works because we are currently assuming all | |
146 | // LogicSignals have the same data/snapshot | |
7491a29f JH |
147 | BOOST_FOREACH (const shared_ptr<decode::Decoder> &dec, _stack) |
148 | if (dec && !dec->probes().empty() && | |
149 | ((logic_signal = (*dec->probes().begin()).second)) && | |
7aa09b00 | 150 | ((data = logic_signal->logic_data()))) |
7491a29f JH |
151 | break; |
152 | ||
153 | if (!data) | |
154 | return; | |
155 | ||
156 | // Get the samplerate and start time | |
157 | _start_time = data->get_start_time(); | |
9d28da5a | 158 | _samplerate = data->samplerate(); |
7491a29f JH |
159 | if (_samplerate == 0.0) |
160 | _samplerate = 1.0; | |
e0fc5810 | 161 | |
6e89374a | 162 | _decode_thread = boost::thread(&DecoderStack::decode_proc, this, |
e0fc5810 | 163 | data); |
640d69ce JH |
164 | } |
165 | ||
caabb84c | 166 | void DecoderStack::clear() |
640d69ce | 167 | { |
dd6b5009 | 168 | _annotations.clear(); |
92421299 JH |
169 | _ann_start_index.clear(); |
170 | _ann_end_index.clear(); | |
640d69ce JH |
171 | } |
172 | ||
a007f5ad JH |
173 | uint64_t DecoderStack::get_max_sample_count() const |
174 | { | |
175 | if (_annotations.empty()) | |
176 | return 0; | |
db62bbfd | 177 | return _annotations.back().end_sample(); |
a007f5ad JH |
178 | } |
179 | ||
6e89374a | 180 | void DecoderStack::decode_proc(shared_ptr<data::Logic> data) |
119aff65 | 181 | { |
b6b267bb | 182 | srd_session *session; |
e0fc5810 | 183 | uint8_t chunk[DecodeChunkLength]; |
7491a29f | 184 | srd_decoder_inst *prev_di = NULL; |
e0fc5810 JH |
185 | |
186 | assert(data); | |
187 | ||
e0fc5810 JH |
188 | const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots = |
189 | data->get_snapshots(); | |
190 | if (snapshots.empty()) | |
191 | return; | |
192 | ||
193 | const shared_ptr<pv::data::LogicSnapshot> &snapshot = | |
194 | snapshots.front(); | |
c02f1e09 | 195 | const int64_t sample_count = snapshot->get_sample_count(); |
064a7f42 JH |
196 | const unsigned int chunk_sample_count = |
197 | DecodeChunkLength / snapshot->unit_size(); | |
e0fc5810 | 198 | |
375b6216 UH |
199 | // Clear error message upon every new session run |
200 | _error_message = QString(); | |
201 | ||
b6b267bb JH |
202 | // Create the session |
203 | srd_session_new(&session); | |
204 | assert(session); | |
e0fc5810 | 205 | |
7491a29f JH |
206 | // Create the decoders |
207 | BOOST_FOREACH(const shared_ptr<decode::Decoder> &dec, _stack) | |
208 | { | |
209 | srd_decoder_inst *const di = dec->create_decoder_inst(session); | |
e0fc5810 | 210 | |
7491a29f JH |
211 | if (!di) |
212 | { | |
8a290daf | 213 | _error_message = tr("Failed to create decoder instance"); |
7491a29f JH |
214 | srd_session_destroy(session); |
215 | return; | |
216 | } | |
b6b267bb | 217 | |
7491a29f JH |
218 | if (prev_di) |
219 | srd_inst_stack (session, prev_di, di); | |
b6b267bb | 220 | |
7491a29f | 221 | prev_di = di; |
b6b267bb JH |
222 | } |
223 | ||
b6b267bb | 224 | // Start the session |
7491a29f JH |
225 | srd_session_metadata_set(session, SRD_CONF_SAMPLERATE, |
226 | g_variant_new_uint64((uint64_t)_samplerate)); | |
227 | ||
228 | srd_pd_output_callback_add(session, SRD_OUTPUT_ANN, | |
229 | DecoderStack::annotation_callback, this); | |
230 | ||
b6b267bb JH |
231 | srd_session_start(session); |
232 | ||
e0fc5810 | 233 | for (int64_t i = 0; |
819f4c25 JH |
234 | !boost::this_thread::interruption_requested() && |
235 | i < sample_count; | |
064a7f42 | 236 | i += chunk_sample_count) |
e0fc5810 | 237 | { |
fe89c961 JH |
238 | lock_guard<mutex> decode_lock(_global_decode_mutex); |
239 | ||
e0fc5810 | 240 | const int64_t chunk_end = min( |
064a7f42 | 241 | i + chunk_sample_count, sample_count); |
e0fc5810 JH |
242 | snapshot->get_samples(chunk, i, chunk_end); |
243 | ||
f00fc2a9 BV |
244 | if (srd_session_send(session, i, i + sample_count, |
245 | chunk, chunk_end - i) != SRD_OK) { | |
8a290daf | 246 | _error_message = tr("Decoder reported an error"); |
e0fc5810 | 247 | break; |
b6b267bb | 248 | } |
5dfeb70f JH |
249 | |
250 | { | |
251 | lock_guard<mutex> lock(_mutex); | |
252 | _samples_decoded = chunk_end; | |
253 | } | |
e0fc5810 | 254 | } |
b6b267bb JH |
255 | |
256 | // Destroy the session | |
257 | srd_session_destroy(session); | |
e0fc5810 JH |
258 | } |
259 | ||
92421299 JH |
260 | bool DecoderStack::index_entry_start_sample_gt( |
261 | const uint64_t sample, const size_t index) const | |
262 | { | |
263 | assert(index < _annotations.size()); | |
264 | return _annotations[index].start_sample() > sample; | |
265 | } | |
266 | ||
267 | bool DecoderStack::index_entry_end_sample_lt( | |
268 | const size_t index, const uint64_t sample) const | |
269 | { | |
270 | assert(index < _annotations.size()); | |
271 | return _annotations[index].end_sample() < sample; | |
272 | } | |
273 | ||
274 | bool DecoderStack::index_entry_end_sample_gt( | |
275 | const uint64_t sample, const size_t index) const | |
276 | { | |
277 | assert(index < _annotations.size()); | |
278 | return _annotations[index].end_sample() > sample; | |
279 | } | |
280 | ||
281 | void DecoderStack::insert_annotation_into_start_index( | |
282 | const pv::data::decode::Annotation &a, const size_t storage_offset) | |
283 | { | |
284 | vector<size_t>::iterator i = _ann_start_index.end(); | |
285 | if (!_ann_start_index.empty() && | |
286 | _annotations[_ann_start_index.back()].start_sample() > | |
287 | a.start_sample()) | |
288 | i = upper_bound(_ann_start_index.begin(), | |
289 | _ann_start_index.end(), a.start_sample(), | |
290 | bind(&DecoderStack::index_entry_start_sample_gt, | |
291 | this, _1, _2)); | |
292 | ||
293 | _ann_start_index.insert(i, storage_offset); | |
294 | } | |
295 | ||
296 | void DecoderStack::insert_annotation_into_end_index( | |
297 | const pv::data::decode::Annotation &a, const size_t storage_offset) | |
298 | { | |
299 | vector<size_t>::iterator i = _ann_end_index.end(); | |
300 | if (!_ann_end_index.empty() && | |
301 | _annotations[_ann_end_index.back()].end_sample() < | |
302 | a.end_sample()) | |
303 | i = upper_bound(_ann_end_index.begin(), | |
304 | _ann_end_index.end(), a.end_sample(), | |
305 | bind(&DecoderStack::index_entry_end_sample_gt, | |
306 | this, _1, _2)); | |
307 | ||
308 | _ann_end_index.insert(i, storage_offset); | |
309 | } | |
310 | ||
6e89374a | 311 | void DecoderStack::annotation_callback(srd_proto_data *pdata, void *decoder) |
e0fc5810 | 312 | { |
06e810f2 | 313 | using pv::data::decode::Annotation; |
e0fc5810 | 314 | |
6d8b0562 | 315 | GSList *l, *ll; |
bc870bcf | 316 | int row, ann_class, idx = 0; |
6d8b0562 | 317 | struct srd_decoder_annotation_row *ann_row; |
bc870bcf | 318 | struct srd_decoder *decc; |
6d8b0562 | 319 | |
e0fc5810 JH |
320 | assert(pdata); |
321 | assert(decoder); | |
322 | ||
6e89374a | 323 | DecoderStack *const d = (DecoderStack*)decoder; |
e0fc5810 | 324 | |
b6b267bb | 325 | lock_guard<mutex> lock(d->_mutex); |
6d8b0562 UH |
326 | |
327 | Annotation a = Annotation(pdata); | |
328 | ||
bc870bcf UH |
329 | decc = pdata->pdo->di->decoder; |
330 | BOOST_FOREACH(const shared_ptr<decode::Decoder> &dec, d->stack()) { | |
331 | if (dec->decoder() == decc) | |
332 | break; | |
333 | idx++; | |
334 | } | |
335 | a.set_pd_index(idx); | |
6d8b0562 | 336 | |
bc870bcf | 337 | for (l = decc->annotation_rows, row = 0; l; l = l->next, row++) |
6d8b0562 UH |
338 | { |
339 | ann_row = (struct srd_decoder_annotation_row *)l->data; | |
340 | ||
341 | for (ll = ann_row->ann_classes, ann_class = 0; ll; | |
342 | ll = ll->next, ann_class++) | |
343 | { | |
344 | if (GPOINTER_TO_INT(ll->data) == a.format()) | |
345 | a.set_row(row); | |
346 | } | |
347 | } | |
348 | ||
92421299 | 349 | const size_t offset = d->_annotations.size(); |
6d8b0562 | 350 | d->_annotations.push_back(a); |
9cef9567 | 351 | |
92421299 JH |
352 | d->insert_annotation_into_start_index(a, offset); |
353 | d->insert_annotation_into_end_index(a, offset); | |
354 | ||
9cef9567 | 355 | d->new_decode_data(); |
119aff65 JH |
356 | } |
357 | ||
358 | } // namespace data | |
359 | } // namespace pv |