+++ /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/thread/thread.hpp>
-
-#include <stdexcept>
-
-#include <QDebug>
-
-#include "decoder.h"
-
-#include <pv/data/logic.h>
-#include <pv/data/logicsnapshot.h>
-#include <pv/view/logicsignal.h>
-#include <pv/view/decode/annotation.h>
-
-using namespace boost;
-using namespace std;
-
-namespace pv {
-namespace data {
-
-const double Decoder::DecodeMargin = 1.0;
-const double Decoder::DecodeThreshold = 0.2;
-const int64_t Decoder::DecodeChunkLength = 4096;
-
-mutex Decoder::_global_decode_mutex;
-
-Decoder::Decoder(const srd_decoder *const dec) :
- _decoder(dec),
- _options(g_hash_table_new_full(g_str_hash,
- g_str_equal, g_free, (GDestroyNotify)g_variant_unref))
-{
-}
-
-Decoder::~Decoder()
-{
- _decode_thread.interrupt();
- _decode_thread.join();
-
- g_hash_table_destroy(_options);
-}
-
-const srd_decoder* Decoder::decoder() const
-{
- return _decoder;
-}
-
-const map<const srd_probe*, shared_ptr<view::LogicSignal> >&
-Decoder::probes() const
-{
- return _probes;
-}
-
-void Decoder::set_probes(std::map<const srd_probe*,
- boost::shared_ptr<view::LogicSignal> > probes)
-{
- _probes = probes;
- begin_decode();
-}
-
-const GHashTable* Decoder::options() const
-{
- return _options;
-}
-
-void Decoder::set_option(const char *id, GVariant *value)
-{
- g_variant_ref(value);
- g_hash_table_replace(_options, (void*)g_strdup(id), value);
- begin_decode();
-}
-
-const vector< shared_ptr<view::decode::Annotation> >
- Decoder::annotations() const
-{
- lock_guard<mutex> lock(_mutex);
- return _annotations;
-}
-
-QString Decoder::error_message()
-{
- lock_guard<mutex> lock(_mutex);
- return _error_message;
-}
-
-void Decoder::begin_decode()
-{
- _decode_thread.interrupt();
- _decode_thread.join();
-
- _annotations.clear();
-
- if (_probes.empty())
- return;
-
- // Get the samplerate and start time
- shared_ptr<pv::view::LogicSignal> logic_signal =
- dynamic_pointer_cast<pv::view::LogicSignal>(
- (*_probes.begin()).second);
- if (logic_signal) {
- shared_ptr<pv::data::Logic> data(
- logic_signal->data());
- if (data) {
- _start_time = data->get_start_time();
- _samplerate = data->get_samplerate();
- if (_samplerate == 0.0)
- _samplerate = 1.0;
- }
- }
-
- // 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
- shared_ptr<pv::view::LogicSignal> sig = (*_probes.begin()).second;
- assert(sig);
- shared_ptr<data::Logic> data = sig->data();
-
- _decode_thread = boost::thread(&Decoder::decode_proc, this,
- data);
-}
-
-void Decoder::clear_snapshots()
-{
-}
-
-void Decoder::decode_proc(shared_ptr<data::Logic> data)
-{
- srd_session *session;
- uint8_t chunk[DecodeChunkLength];
-
- assert(data);
-
- const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
- data->get_snapshots();
- if (snapshots.empty())
- return;
-
- const shared_ptr<pv::data::LogicSnapshot> &snapshot =
- snapshots.front();
- const int64_t sample_count = snapshot->get_sample_count() - 1;
-
- // Create the session
- srd_session_new(&session);
- assert(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,
- Decoder::annotation_callback, this);
-
- // Create the decoder instance
- srd_decoder_inst *const decoder_inst = srd_inst_new(
- session, _decoder->id, _options);
- if(!decoder_inst) {
- _error_message = tr("Failed to initialise decoder");
- return;
- }
-
- // Setup the probes
- GHashTable *const probes = g_hash_table_new_full(g_str_hash,
- g_str_equal, g_free, (GDestroyNotify)g_variant_unref);
-
- for(map<const srd_probe*, shared_ptr<view::LogicSignal> >::
- const_iterator i = _probes.begin();
- i != _probes.end(); i++)
- {
- shared_ptr<view::Signal> signal((*i).second);
- GVariant *const gvar = g_variant_new_int32(
- signal->probe()->index);
- g_variant_ref_sink(gvar);
- g_hash_table_insert(probes, (*i).first->id, gvar);
- }
-
- srd_inst_probe_set_all(decoder_inst, probes);
-
- // Start the session
- srd_session_start(session);
-
- for (int64_t i = 0;
- !this_thread::interruption_requested() && i < sample_count;
- i += DecodeChunkLength)
- {
- lock_guard<mutex> decode_lock(_global_decode_mutex);
-
- const int64_t chunk_end = min(
- i + DecodeChunkLength, sample_count);
- snapshot->get_samples(chunk, i, chunk_end);
-
- if (srd_session_send(session, i, i + sample_count,
- chunk, chunk_end - i) != SRD_OK) {
- _error_message = tr("Failed to initialise decoder");
- break;
- }
- }
-
- // Destroy the session
- srd_session_destroy(session);
-}
-
-void Decoder::annotation_callback(srd_proto_data *pdata, void *decoder)
-{
- using namespace pv::view::decode;
-
- assert(pdata);
- assert(decoder);
-
- Decoder *const d = (Decoder*)decoder;
-
- shared_ptr<Annotation> a(new Annotation(pdata));
- lock_guard<mutex> lock(d->_mutex);
- d->_annotations.push_back(a);
-
- d->new_decode_data();
-}
-
-} // namespace data
-} // namespace pv
projects / pulseview.git / blobdiff