+++ /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/view/logicsignal.h>
-#include <pv/view/decode/annotation.h>
-
-using namespace boost;
-using namespace std;
-
-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()
-{
- _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)
-{
- using pv::data::decode::Decoder;
-
- 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;
-}
-
-const vector< shared_ptr<view::decode::Annotation> >
- DecoderStack::annotations() const
-{
- lock_guard<mutex> lock(_mutex);
- return _annotations;
-}
-
-QString DecoderStack::error_message()
-{
- lock_guard<mutex> lock(_mutex);
- return _error_message;
-}
-
-void DecoderStack::begin_decode()
-{
- shared_ptr<pv::view::LogicSignal> logic_signal;
- shared_ptr<pv::data::Logic> data;
-
- _decode_thread.interrupt();
- _decode_thread.join();
-
- _samples_decoded = 0;
-
- _annotations.clear();
-
- // 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->get_samplerate();
- if (_samplerate == 0.0)
- _samplerate = 1.0;
-
- _decode_thread = boost::thread(&DecoderStack::decode_proc, this,
- data);
-}
-
-void DecoderStack::clear_snapshots()
-{
-}
-
-void DecoderStack::decode_proc(shared_ptr<data::Logic> data)
-{
- srd_session *session;
- uint8_t chunk[DecodeChunkLength];
- srd_decoder_inst *prev_di = NULL;
-
- 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);
-
-
- // Create the decoders
- BOOST_FOREACH(const shared_ptr<decode::Decoder> &dec, _stack)
- {
- srd_decoder_inst *const di = dec->create_decoder_inst(session);
-
- if (!di)
- {
- _error_message = tr("Failed to initialise decoder");
- 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;
- !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;
- }
-
- {
- 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)
-{
- using namespace pv::view::decode;
-
- assert(pdata);
- assert(decoder);
-
- DecoderStack *const d = (DecoderStack*)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
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