+++ /dev/null
-/*
- * This file is part of the PulseView project.
- *
- * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <libsigrokdecode/libsigrokdecode.h>
-
-#include <boost/foreach.hpp>
-#include <boost/thread/thread.hpp>
-
-#include <stdexcept>
-
-#include <QDebug>
-
-#include "decoderstack.h"
-
-#include <pv/data/logic.h>
-#include <pv/data/logicsnapshot.h>
-#include <pv/data/decode/decoder.h>
-#include <pv/data/decode/annotation.h>
-#include <pv/view/logicsignal.h>
-
-using boost::lock_guard;
-using boost::mutex;
-using boost::shared_ptr;
-using std::deque;
-using std::make_pair;
-using std::max;
-using std::min;
-using std::list;
-using std::map;
-using std::pair;
-using std::vector;
-
-using namespace pv::data::decode;
-
-namespace pv {
-namespace data {
-
-const double DecoderStack::DecodeMargin = 1.0;
-const double DecoderStack::DecodeThreshold = 0.2;
-const int64_t DecoderStack::DecodeChunkLength = 4096;
-
-mutex DecoderStack::_global_decode_mutex;
-
-DecoderStack::DecoderStack(const srd_decoder *const dec) :
- _samples_decoded(0)
-{
- _stack.push_back(shared_ptr<decode::Decoder>(
- new decode::Decoder(dec)));
-}
-
-DecoderStack::~DecoderStack()
-{
- if (_decode_thread.joinable()) {
- _decode_thread.interrupt();
- _decode_thread.join();
- }
-}
-
-const std::list< boost::shared_ptr<decode::Decoder> >&
-DecoderStack::stack() const
-{
- return _stack;
-}
-
-void DecoderStack::push(boost::shared_ptr<decode::Decoder> decoder)
-{
- assert(decoder);
- _stack.push_back(decoder);
-}
-
-void DecoderStack::remove(int index)
-{
- assert(index >= 0);
- assert(index < (int)_stack.size());
-
- // Find the decoder in the stack
- list< shared_ptr<Decoder> >::iterator iter = _stack.begin();
- for(int i = 0; i < index; i++, iter++)
- assert(iter != _stack.end());
-
- // Delete the element
- _stack.erase(iter);
-}
-
-int64_t DecoderStack::samples_decoded() const
-{
- lock_guard<mutex> decode_lock(_mutex);
- return _samples_decoded;
-}
-
-std::vector<Row> DecoderStack::get_visible_rows() const
-{
- lock_guard<mutex> lock(_mutex);
-
- vector<Row> rows;
-
- BOOST_FOREACH (const shared_ptr<decode::Decoder> &dec, _stack)
- {
- assert(dec);
- if (!dec->shown())
- continue;
-
- const srd_decoder *const decc = dec->decoder();
- assert(dec->decoder());
-
- // Add a row for the decoder if it doesn't have a row list
- if (!decc->annotation_rows)
- rows.push_back(Row(decc));
-
- // Add the decoder rows
- for (const GSList *l = decc->annotation_rows; l; l = l->next)
- {
- const srd_decoder_annotation_row *const ann_row =
- (srd_decoder_annotation_row *)l->data;
- assert(ann_row);
- rows.push_back(Row(decc, ann_row));
- }
- }
-
- return rows;
-}
-
-void DecoderStack::get_annotation_subset(
- std::vector<pv::data::decode::Annotation> &dest,
- const Row &row, uint64_t start_sample,
- uint64_t end_sample) const
-{
- lock_guard<mutex> lock(_mutex);
-
- std::map<const Row, decode::RowData>::const_iterator iter =
- _rows.find(row);
- if (iter != _rows.end())
- (*iter).second.get_annotation_subset(dest,
- start_sample, end_sample);
-}
-
-QString DecoderStack::error_message()
-{
- lock_guard<mutex> lock(_mutex);
- return _error_message;
-}
-
-void DecoderStack::clear()
-{
- _samples_decoded = 0;
- _error_message = QString();
- _rows.clear();
- _class_rows.clear();
-}
-
-void DecoderStack::begin_decode()
-{
- shared_ptr<pv::view::LogicSignal> logic_signal;
- shared_ptr<pv::data::Logic> data;
-
- if (_decode_thread.joinable()) {
- _decode_thread.interrupt();
- _decode_thread.join();
- }
-
- clear();
-
- // Add classes
- BOOST_FOREACH (const shared_ptr<decode::Decoder> &dec, _stack)
- {
- assert(dec);
- const srd_decoder *const decc = dec->decoder();
- assert(dec->decoder());
-
- // Add a row for the decoder if it doesn't have a row list
- if (!decc->annotation_rows)
- _rows[Row(decc)] = decode::RowData();
-
- // Add the decoder rows
- for (const GSList *l = decc->annotation_rows; l; l = l->next)
- {
- const srd_decoder_annotation_row *const ann_row =
- (srd_decoder_annotation_row *)l->data;
- assert(ann_row);
-
- const Row row(decc, ann_row);
-
- // Add a new empty row data object
- _rows[row] = decode::RowData();
-
- // Map out all the classes
- for (const GSList *ll = ann_row->ann_classes;
- ll; ll = ll->next)
- _class_rows[make_pair(decc,
- GPOINTER_TO_INT(ll->data))] = row;
- }
- }
-
- // We get the logic data of the first probe in the list.
- // This works because we are currently assuming all
- // LogicSignals have the same data/snapshot
- BOOST_FOREACH (const shared_ptr<decode::Decoder> &dec, _stack)
- if (dec && !dec->probes().empty() &&
- ((logic_signal = (*dec->probes().begin()).second)) &&
- ((data = logic_signal->logic_data())))
- break;
-
- if (!data)
- return;
-
- // Get the samplerate and start time
- _start_time = data->get_start_time();
- _samplerate = data->samplerate();
- if (_samplerate == 0.0)
- _samplerate = 1.0;
-
- _decode_thread = boost::thread(&DecoderStack::decode_proc, this,
- data);
-}
-
-uint64_t DecoderStack::get_max_sample_count() const
-{
- uint64_t max_sample_count = 0;
-
- for (map<const Row, RowData>::const_iterator i = _rows.begin();
- i != _rows.end(); i++)
- max_sample_count = max(max_sample_count,
- (*i).second.get_max_sample());
-
- return max_sample_count;
-}
-
-void DecoderStack::decode_proc(shared_ptr<data::Logic> data)
-{
- srd_session *session;
- uint8_t chunk[DecodeChunkLength];
- srd_decoder_inst *prev_di = NULL;
-
- assert(data);
-
- // Check we have a snapshot of data
- const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
- data->get_snapshots();
- if (snapshots.empty())
- return;
-
- // Check that all decoders have the required probes
- BOOST_FOREACH(const shared_ptr<decode::Decoder> &dec, _stack)
- if (!dec->have_required_probes())
- return;
-
- const shared_ptr<pv::data::LogicSnapshot> &snapshot =
- snapshots.front();
- const int64_t sample_count = snapshot->get_sample_count();
- const unsigned int unit_size = snapshot->unit_size();
- const unsigned int chunk_sample_count =
- DecodeChunkLength / unit_size;
-
- // Create the session
- srd_session_new(&session);
- assert(session);
-
- // Create the decoders
- BOOST_FOREACH(const shared_ptr<decode::Decoder> &dec, _stack)
- {
- srd_decoder_inst *const di = dec->create_decoder_inst(session, unit_size);
-
- if (!di)
- {
- _error_message = tr("Failed to create decoder instance");
- srd_session_destroy(session);
- return;
- }
-
- if (prev_di)
- srd_inst_stack (session, prev_di, di);
-
- prev_di = di;
- }
-
- // Start the session
- srd_session_metadata_set(session, SRD_CONF_SAMPLERATE,
- g_variant_new_uint64((uint64_t)_samplerate));
-
- srd_pd_output_callback_add(session, SRD_OUTPUT_ANN,
- DecoderStack::annotation_callback, this);
-
- srd_session_start(session);
-
- for (int64_t i = 0;
- !boost::this_thread::interruption_requested() &&
- i < sample_count;
- i += chunk_sample_count)
- {
- lock_guard<mutex> decode_lock(_global_decode_mutex);
-
- const int64_t chunk_end = min(
- i + chunk_sample_count, sample_count);
- snapshot->get_samples(chunk, i, chunk_end);
-
- if (srd_session_send(session, i, i + sample_count, chunk,
- (chunk_end - i) * unit_size) != SRD_OK) {
- _error_message = tr("Decoder reported an error");
- break;
- }
-
- {
- lock_guard<mutex> lock(_mutex);
- _samples_decoded = chunk_end;
- }
- }
-
- // Destroy the session
- srd_session_destroy(session);
-}
-
-void DecoderStack::annotation_callback(srd_proto_data *pdata, void *decoder)
-{
- assert(pdata);
- assert(decoder);
-
- DecoderStack *const d = (DecoderStack*)decoder;
- assert(d);
-
- lock_guard<mutex> lock(d->_mutex);
-
- const Annotation a(pdata);
-
- // Find the row
- assert(pdata->pdo);
- assert(pdata->pdo->di);
- const srd_decoder *const decc = pdata->pdo->di->decoder;
- assert(decc);
-
- map<const Row, decode::RowData>::iterator row_iter = d->_rows.end();
-
- // Try looking up the sub-row of this class
- const map<pair<const srd_decoder*, int>, Row>::const_iterator r =
- d->_class_rows.find(make_pair(decc, a.format()));
- if (r != d->_class_rows.end())
- row_iter = d->_rows.find((*r).second);
- else
- {
- // Failing that, use the decoder as a key
- row_iter = d->_rows.find(Row(decc));
- }
-
- assert(row_iter != d->_rows.end());
- if (row_iter == d->_rows.end()) {
- qDebug() << "Unexpected annotation: decoder = " << decc <<
- ", format = " << a.format();
- assert(0);
- return;
- }
-
- // Add the annotation
- (*row_iter).second.push_annotation(a);
-
- d->new_decode_data();
-}
-
-} // namespace data
-} // namespace pv
projects / pulseview.git / blobdiff