* 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 {
-Decoder::Decoder(const srd_decoder *const dec) :
- _decoder(dec)
+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,
+ std::map<const srd_probe*,
+ boost::shared_ptr<pv::view::LogicSignal> > probes,
+ GHashTable *options) :
+ _decoder(dec),
+ _probes(probes),
+ _options(options)
{
+ init_decoder();
+
+ begin_decode();
+}
+
+Decoder::~Decoder()
+{
+ _decode_thread.interrupt();
+ _decode_thread.join();
+
+ g_hash_table_destroy(_options);
}
const srd_decoder* Decoder::get_decoder() const
return _decoder;
}
+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();
+
+ if (_probes.empty())
+ return;
+
+ // 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::init_decoder()
+{
+ if (!_probes.empty())
+ {
+ 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;
+ }
+ }
+ }
+}
+
+void Decoder::decode_proc(shared_ptr<data::Logic> data)
+{
+ srd_session *session;
+ uint8_t chunk[DecodeChunkLength];
+
+ assert(data);
+
+ _annotations.clear();
+
+ 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_config_set(session, SRD_CONF_NUM_PROBES,
+ g_variant_new_uint64(_probes.size()));
+ srd_session_config_set(session, SRD_CONF_UNITSIZE,
+ g_variant_new_uint64(snapshot->unit_size()));
+ srd_session_config_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;
+ }
+
+ decoder_inst->data_samplerate = _samplerate;
+
+ // 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, 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