X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fsigsession.cpp;h=ac9c052b3bf9b8d50e66adac02efc670359fac4d;hp=b7e910e3a4839268792b9bf970033ac2d6c1c69c;hb=ab973f4729258b729d2aa84abfa14b61609fa35e;hpb=aba1dd166b90f3408cd9d2b23b906df081845563

diff --git a/pv/sigsession.cpp b/pv/sigsession.cpp
index b7e910e3..ac9c052b 100644
--- a/pv/sigsession.cpp
+++ b/pv/sigsession.cpp
@@ -1,7 +1,7 @@
 /*
  * This file is part of the PulseView project.
  *
- * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
+ * Copyright (C) 2012-14 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
@@ -18,51 +18,146 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#ifdef ENABLE_DECODE
+#include <libsigrokdecode/libsigrokdecode.h>
+#endif
+
 #include "sigsession.h"
 
-#include "analogdata.h"
-#include "analogdatasnapshot.h"
-#include "logicdata.h"
-#include "logicdatasnapshot.h"
+#include "devicemanager.h"
+#include "device/device.h"
+#include "device/file.h"
+
+#include "data/analog.h"
+#include "data/analogsnapshot.h"
+#include "data/decoderstack.h"
+#include "data/logic.h"
+#include "data/logicsnapshot.h"
+#include "data/decode/decoder.h"
+
 #include "view/analogsignal.h"
+#include "view/decodetrace.h"
 #include "view/logicsignal.h"
 
-#include <QDebug>
+#include <cassert>
+#include <mutex>
+#include <stdexcept>
+
+#include <sys/stat.h>
 
-#include <assert.h>
+#include <QDebug>
 
-using namespace boost;
-using namespace std;
+using std::dynamic_pointer_cast;
+using std::function;
+using std::lock_guard;
+using std::mutex;
+using std::list;
+using std::map;
+using std::set;
+using std::shared_ptr;
+using std::string;
+using std::vector;
 
 namespace pv {
 
 // TODO: This should not be necessary
 SigSession* SigSession::_session = NULL;
 
-SigSession::SigSession() :
+// TODO: This should not be necessary
+struct sr_session *SigSession::_sr_session = NULL;
+
+SigSession::SigSession(DeviceManager &device_manager) :
+	_device_manager(device_manager),
 	_capture_state(Stopped)
 {
 	// TODO: This should not be necessary
 	_session = this;
+
+	set_default_device();
 }
 
 SigSession::~SigSession()
 {
+	using pv::device::Device;
+
+	// Stop and join to the thread
 	stop_capture();
 
-	if (_sampling_thread.get())
-		_sampling_thread->join();
-	_sampling_thread.reset();
+	if (_dev_inst)
+		_dev_inst->release();
 
 	// TODO: This should not be necessary
 	_session = NULL;
 }
 
-void SigSession::load_file(const string &name)
+shared_ptr<device::DevInst> SigSession::get_device() const
 {
+	return _dev_inst;
+}
+
+void SigSession::set_device(
+	shared_ptr<device::DevInst> dev_inst) throw(QString)
+{
+	using pv::device::Device;
+
+	if (!dev_inst)
+		return;
+
+	// Ensure we are not capturing before setting the device
 	stop_capture();
-	_sampling_thread.reset(new boost::thread(
-		&SigSession::load_thread_proc, this, name));
+
+	if (_dev_inst) {
+		sr_session_datafeed_callback_remove_all(_sr_session);
+		_dev_inst->release();
+	}
+
+	_dev_inst = dev_inst;
+	_decode_traces.clear();
+
+	if (dev_inst) {
+		dev_inst->use(this);
+		sr_session_datafeed_callback_add(_sr_session, data_feed_in_proc, NULL);
+		update_signals(dev_inst);
+	}
+}
+
+void SigSession::set_file(const string &name) throw(QString)
+{
+	// Deselect the old device, because file type detection in File::create
+	// destroys the old session inside libsigrok.
+	set_device(shared_ptr<device::DevInst>());
+	set_device(shared_ptr<device::DevInst>(device::File::create(name)));
+}
+
+void SigSession::set_default_device()
+{
+	shared_ptr<pv::device::DevInst> default_device;
+	const list< shared_ptr<device::Device> > &devices =
+		_device_manager.devices();
+
+	if (!devices.empty()) {
+		// Fall back to the first device in the list.
+		default_device = devices.front();
+
+		// Try and find the demo device and select that by default
+		for (shared_ptr<pv::device::Device> dev : devices)
+			if (strcmp(dev->dev_inst()->driver->name,
+				"demo") == 0) {
+				default_device = dev;
+				break;
+			}
+	}
+
+	set_device(default_device);
+}
+
+void SigSession::release_device(device::DevInst *dev_inst)
+{
+	(void)dev_inst;
+	assert(_dev_inst.get() == dev_inst);
+
+	assert(_capture_state == Stopped);
+	_dev_inst = shared_ptr<device::DevInst>();
 }
 
 SigSession::capture_state SigSession::get_capture_state() const
@@ -71,188 +166,362 @@ SigSession::capture_state SigSession::get_capture_state() const
 	return _capture_state;
 }
 
-void SigSession::start_capture(struct sr_dev_inst *sdi,
-	uint64_t record_length, uint64_t sample_rate)
+void SigSession::start_capture(function<void (const QString)> error_handler)
 {
 	stop_capture();
 
-	lock_guard<mutex> lock(_sampling_mutex);
-	_sample_rate = sample_rate;
+	// Check that a device instance has been selected.
+	if (!_dev_inst) {
+		qDebug() << "No device selected";
+		return;
+	}
 
-	_sampling_thread.reset(new boost::thread(
-		&SigSession::sample_thread_proc, this, sdi,
-		record_length));
+	assert(_dev_inst->dev_inst());
+
+	// Check that at least one probe is enabled
+	const GSList *l;
+	for (l = _dev_inst->dev_inst()->channels; l; l = l->next) {
+		sr_channel *const probe = (sr_channel*)l->data;
+		assert(probe);
+		if (probe->enabled)
+			break;
+	}
+
+	if (!l) {
+		error_handler(tr("No channels enabled."));
+		return;
+	}
+
+	// Begin the session
+	_sampling_thread = std::thread(
+		&SigSession::sample_thread_proc, this, _dev_inst,
+			error_handler);
 }
 
 void SigSession::stop_capture()
 {
-	if (get_capture_state() == Stopped)
-		return;
-
-	sr_session_stop();
+	if (get_capture_state() != Stopped)
+		sr_session_stop(_sr_session);
 
 	// Check that sampling stopped
-	if (_sampling_thread.get())
-		_sampling_thread->join();
-	_sampling_thread.reset();
+	if (_sampling_thread.joinable())
+		_sampling_thread.join();
 }
 
-vector< shared_ptr<view::Signal> > SigSession::get_signals()
+set< shared_ptr<data::SignalData> > SigSession::get_data() const
+{
+	lock_guard<mutex> lock(_signals_mutex);
+	set< shared_ptr<data::SignalData> > data;
+	for (const shared_ptr<view::Signal> sig : _signals) {
+		assert(sig);
+		data.insert(sig->data());
+	}
+
+	return data;
+}
+
+vector< shared_ptr<view::Signal> > SigSession::get_signals() const
 {
 	lock_guard<mutex> lock(_signals_mutex);
 	return _signals;
 }
 
-boost::shared_ptr<LogicData> SigSession::get_data()
+#ifdef ENABLE_DECODE
+bool SigSession::add_decoder(srd_decoder *const dec)
+{
+	map<const srd_channel*, shared_ptr<view::LogicSignal> > probes;
+	shared_ptr<data::DecoderStack> decoder_stack;
+
+	try
+	{
+		lock_guard<mutex> lock(_signals_mutex);
+
+		// Create the decoder
+		decoder_stack = shared_ptr<data::DecoderStack>(
+			new data::DecoderStack(*this, dec));
+
+		// Make a list of all the probes
+		std::vector<const srd_channel*> all_probes;
+		for(const GSList *i = dec->channels; i; i = i->next)
+			all_probes.push_back((const srd_channel*)i->data);
+		for(const GSList *i = dec->opt_channels; i; i = i->next)
+			all_probes.push_back((const srd_channel*)i->data);
+
+		// Auto select the initial probes
+		for (const srd_channel *pdch : all_probes)
+			for (shared_ptr<view::Signal> s : _signals)
+			{
+				shared_ptr<view::LogicSignal> l =
+					dynamic_pointer_cast<view::LogicSignal>(s);
+				if (l && QString::fromUtf8(pdch->name).
+					toLower().contains(
+					l->get_name().toLower()))
+					probes[pdch] = l;
+			}
+
+		assert(decoder_stack);
+		assert(!decoder_stack->stack().empty());
+		assert(decoder_stack->stack().front());
+		decoder_stack->stack().front()->set_probes(probes);
+
+		// Create the decode signal
+		shared_ptr<view::DecodeTrace> d(
+			new view::DecodeTrace(*this, decoder_stack,
+				_decode_traces.size()));
+		_decode_traces.push_back(d);
+	}
+	catch(std::runtime_error e)
+	{
+		return false;
+	}
+
+	signals_changed();
+
+	// Do an initial decode
+	decoder_stack->begin_decode();
+
+	return true;
+}
+
+vector< shared_ptr<view::DecodeTrace> > SigSession::get_decode_signals() const
 {
-	return _logic_data;
+	lock_guard<mutex> lock(_signals_mutex);
+	return _decode_traces;
 }
 
+void SigSession::remove_decode_signal(view::DecodeTrace *signal)
+{
+	for (auto i = _decode_traces.begin(); i != _decode_traces.end(); i++)
+		if ((*i).get() == signal)
+		{
+			_decode_traces.erase(i);
+			signals_changed();
+			return;
+		}
+}
+#endif
+
 void SigSession::set_capture_state(capture_state state)
 {
 	lock_guard<mutex> lock(_sampling_mutex);
+	const bool changed = _capture_state != state;
 	_capture_state = state;
-	capture_state_changed(state);
+	if(changed)
+		capture_state_changed(state);
 }
 
-void SigSession::load_thread_proc(const string name)
+void SigSession::update_signals(shared_ptr<device::DevInst> dev_inst)
 {
-	if (sr_session_load(name.c_str()) != SR_OK) {
-		qDebug() << "Failed to load file.";
-		return;
+	assert(dev_inst);
+	assert(_capture_state == Stopped);
+
+	unsigned int logic_probe_count = 0;
+
+	// Clear the decode traces
+	_decode_traces.clear();
+
+	// Detect what data types we will receive
+	if(dev_inst) {
+		assert(dev_inst->dev_inst());
+		for (const GSList *l = dev_inst->dev_inst()->channels;
+			l; l = l->next) {
+			const sr_channel *const probe = (const sr_channel *)l->data;
+			if (!probe->enabled)
+				continue;
+
+			switch(probe->type) {
+			case SR_CHANNEL_LOGIC:
+				logic_probe_count++;
+				break;
+			}
+		}
 	}
 
-	sr_session_datafeed_callback_add(data_feed_in_proc);
+	// Create data containers for the logic data snapshots
+	{
+		lock_guard<mutex> data_lock(_data_mutex);
 
-	if (sr_session_start() != SR_OK) {
-		qDebug() << "Failed to start session.";
-		return;
+		_logic_data.reset();
+		if (logic_probe_count != 0) {
+			_logic_data.reset(new data::Logic(
+				logic_probe_count));
+			assert(_logic_data);
+		}
 	}
 
-	set_capture_state(Running);
+	// Make the Signals list
+	do {
+		lock_guard<mutex> lock(_signals_mutex);
+
+		_signals.clear();
 
-	sr_session_run();
-	sr_session_stop();
+		if(!dev_inst)
+			break;
+
+		assert(dev_inst->dev_inst());
+		for (const GSList *l = dev_inst->dev_inst()->channels;
+			l; l = l->next) {
+			shared_ptr<view::Signal> signal;
+			sr_channel *const probe = (sr_channel *)l->data;
+			assert(probe);
+
+			switch(probe->type) {
+			case SR_CHANNEL_LOGIC:
+				signal = shared_ptr<view::Signal>(
+					new view::LogicSignal(dev_inst,
+						probe, _logic_data));
+				break;
+
+			case SR_CHANNEL_ANALOG:
+			{
+				shared_ptr<data::Analog> data(
+					new data::Analog());
+				signal = shared_ptr<view::Signal>(
+					new view::AnalogSignal(dev_inst,
+						probe, data));
+				break;
+			}
 
-	set_capture_state(Stopped);
+			default:
+				assert(0);
+				break;
+			}
+
+			assert(signal);
+			_signals.push_back(signal);
+		}
+
+	} while(0);
+
+	signals_changed();
 }
 
-void SigSession::sample_thread_proc(struct sr_dev_inst *sdi,
-	uint64_t record_length)
+shared_ptr<view::Signal> SigSession::signal_from_probe(
+	const sr_channel *probe) const
 {
-	sr_session_new();
-	sr_session_datafeed_callback_add(data_feed_in_proc);
-
-	if (sr_session_dev_add(sdi) != SR_OK) {
-		qDebug() << "Failed to use device.";
-		sr_session_destroy();
-		return;
+	lock_guard<mutex> lock(_signals_mutex);
+	for (shared_ptr<view::Signal> sig : _signals) {
+		assert(sig);
+		if (sig->probe() == probe)
+			return sig;
 	}
+	return shared_ptr<view::Signal>();
+}
 
-	if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES,
-		&record_length) != SR_OK) {
-		qDebug() << "Failed to configure time-based sample limit.";
-		sr_session_destroy();
-		return;
-	}
+void SigSession::read_sample_rate(const sr_dev_inst *const sdi)
+{
+	GVariant *gvar;
+	uint64_t sample_rate = 0;
 
+	// Read out the sample rate
+	if(sdi->driver)
 	{
-		lock_guard<mutex> lock(_sampling_mutex);
-		if (sr_dev_config_set(sdi, SR_HWCAP_SAMPLERATE,
-			&_sample_rate) != SR_OK) {
-			qDebug() << "Failed to configure samplerate.";
-			sr_session_destroy();
+		const int ret = sr_config_get(sdi->driver, sdi, NULL,
+			SR_CONF_SAMPLERATE, &gvar);
+		if (ret != SR_OK) {
+			qDebug("Failed to get samplerate\n");
 			return;
 		}
-	}
 
-	if (sr_session_start() != SR_OK) {
-		qDebug() << "Failed to start session.";
-		return;
+		sample_rate = g_variant_get_uint64(gvar);
+		g_variant_unref(gvar);
 	}
 
-	set_capture_state(Running);
-
-	sr_session_run();
-	sr_session_destroy();
-
-	set_capture_state(Stopped);
+	// Set the sample rate of all data
+	const set< shared_ptr<data::SignalData> > data_set = get_data();
+	for (shared_ptr<data::SignalData> data : data_set) {
+		assert(data);
+		data->set_samplerate(sample_rate);
+	}
 }
 
-void SigSession::feed_in_meta_logic(const struct sr_dev_inst *sdi,
-	const sr_datafeed_meta_logic &meta_logic)
+void SigSession::sample_thread_proc(shared_ptr<device::DevInst> dev_inst,
+	function<void (const QString)> error_handler)
 {
-	using view::LogicSignal;
+	assert(dev_inst);
+	assert(dev_inst->dev_inst());
+	assert(error_handler);
 
-	{
-		lock_guard<mutex> data_lock(_data_mutex);
-		lock_guard<mutex> sampling_lock(_sampling_mutex);
+	read_sample_rate(dev_inst->dev_inst());
 
-		// Create an empty LogicData for coming data snapshots
-		_logic_data.reset(new LogicData(meta_logic, _sample_rate));
-		assert(_logic_data);
-		if (!_logic_data)
-			return;
+	try {
+		dev_inst->start();
+	} catch(const QString e) {
+		error_handler(e);
+		return;
 	}
 
-	{
-		lock_guard<mutex> lock(_signals_mutex);
+	set_capture_state(sr_session_trigger_get(_sr_session) ?
+		AwaitingTrigger : Running);
 
-		// Add the signals
-		for (int i = 0; i < meta_logic.num_probes; i++) {
-			const sr_probe *const probe =
-				(const sr_probe*)g_slist_nth_data(
-					sdi->probes, i);
-			if (probe->enabled) {
-				shared_ptr<LogicSignal> signal(
-					new LogicSignal(probe->name,
-						_logic_data, probe->index));
-				_signals.push_back(signal);
-			}
-		}
+	dev_inst->run();
+	set_capture_state(Stopped);
 
-		signals_changed();
+	// Confirm that SR_DF_END was received
+	if (_cur_logic_snapshot)
+	{
+		qDebug("SR_DF_END was not received.");
+		assert(0);
 	}
 }
 
-void SigSession::feed_in_meta_analog(const struct sr_dev_inst *sdi,
-	const sr_datafeed_meta_analog &meta_analog)
+void SigSession::feed_in_header(const sr_dev_inst *sdi)
 {
-	using view::AnalogSignal;
-
-	{
-		lock_guard<mutex> data_lock(_data_mutex);
-		lock_guard<mutex> sampling_lock(_sampling_mutex);
+	read_sample_rate(sdi);
+}
 
-		// Create an empty AnalogData for coming data snapshots
-		_analog_data.reset(new AnalogData(
-			meta_analog, _sample_rate));
-		assert(_analog_data);
-		if (!_analog_data)
-			return;
+void SigSession::feed_in_meta(const sr_dev_inst *sdi,
+	const sr_datafeed_meta &meta)
+{
+	(void)sdi;
+
+	for (const GSList *l = meta.config; l; l = l->next) {
+		const sr_config *const src = (const sr_config*)l->data;
+		switch (src->key) {
+		case SR_CONF_SAMPLERATE:
+			/// @todo handle samplerate changes
+			/// samplerate = (uint64_t *)src->value;
+			break;
+		default:
+			// Unknown metadata is not an error.
+			break;
+		}
 	}
 
-	{
-		lock_guard<mutex> lock(_signals_mutex);
-
-		// Add the signals
-		shared_ptr<AnalogSignal> signal(
-			new AnalogSignal(QString("???"), _analog_data));
-		_signals.push_back(signal);
+	signals_changed();
+}
 
-		signals_changed();
-	}
+void SigSession::feed_in_frame_begin()
+{
+	if (_cur_logic_snapshot || !_cur_analog_snapshots.empty())
+		frame_began();
 }
 
 void SigSession::feed_in_logic(const sr_datafeed_logic &logic)
 {
 	lock_guard<mutex> lock(_data_mutex);
+
+	if (!_logic_data)
+	{
+		qDebug() << "Unexpected logic packet";
+		return;
+	}
+
 	if (!_cur_logic_snapshot)
 	{
+		// This could be the first packet after a trigger
+		set_capture_state(Running);
+
 		// Create a new data snapshot
-		_cur_logic_snapshot = shared_ptr<LogicDataSnapshot>(
-			new LogicDataSnapshot(logic));
+		_cur_logic_snapshot = shared_ptr<data::LogicSnapshot>(
+			new data::LogicSnapshot(logic, _dev_inst->get_sample_limit()));
 		_logic_data->push_snapshot(_cur_logic_snapshot);
+
+		// @todo Putting this here means that only listeners querying
+		// for logic will be notified. Currently the only user of
+		// frame_began is DecoderStack, but in future we need to signal
+		// this after both analog and logic sweeps have begun.
+		frame_began();
 	}
 	else
 	{
@@ -260,26 +529,68 @@ void SigSession::feed_in_logic(const sr_datafeed_logic &logic)
 		_cur_logic_snapshot->append_payload(logic);
 	}
 
-	data_updated();
+	data_received();
 }
 
 void SigSession::feed_in_analog(const sr_datafeed_analog &analog)
 {
 	lock_guard<mutex> lock(_data_mutex);
-	if (!_cur_analog_snapshot)
+
+	const unsigned int probe_count = g_slist_length(analog.channels);
+	const size_t sample_count = analog.num_samples / probe_count;
+	const float *data = analog.data;
+	bool sweep_beginning = false;
+
+	for (GSList *p = analog.channels; p; p = p->next)
 	{
-		// Create a new data snapshot
-		_cur_analog_snapshot = shared_ptr<AnalogDataSnapshot>(
-			new AnalogDataSnapshot(analog));
-		_analog_data->push_snapshot(_cur_analog_snapshot);
+		shared_ptr<data::AnalogSnapshot> snapshot;
+
+		sr_channel *const probe = (sr_channel*)p->data;
+		assert(probe);
+
+		// Try to get the snapshot of the probe
+		const map< const sr_channel*, shared_ptr<data::AnalogSnapshot> >::
+			iterator iter = _cur_analog_snapshots.find(probe);
+		if (iter != _cur_analog_snapshots.end())
+			snapshot = (*iter).second;
+		else
+		{
+			// If no snapshot was found, this means we havn't
+			// created one yet. i.e. this is the first packet
+			// in the sweep containing this snapshot.
+			sweep_beginning = true;
+
+			// Create a snapshot, keep it in the maps of probes
+			snapshot = shared_ptr<data::AnalogSnapshot>(
+				new data::AnalogSnapshot(_dev_inst->get_sample_limit()));
+			_cur_analog_snapshots[probe] = snapshot;
+
+			// Find the annalog data associated with the probe
+			shared_ptr<view::AnalogSignal> sig =
+				dynamic_pointer_cast<view::AnalogSignal>(
+					signal_from_probe(probe));
+			assert(sig);
+
+			shared_ptr<data::Analog> data(sig->analog_data());
+			assert(data);
+
+			// Push the snapshot into the analog data.
+			data->push_snapshot(snapshot);
+		}
+
+		assert(snapshot);
+
+		// Append the samples in the snapshot
+		snapshot->append_interleaved_samples(data++, sample_count,
+			probe_count);
 	}
-	else
-	{
-		// Append to the existing data snapshot
-		_cur_analog_snapshot->append_payload(analog);
+
+	if (sweep_beginning) {
+		// This could be the first packet after a trigger
+		set_capture_state(Running);
 	}
 
-	data_updated();
+	data_received();
 }
 
 void SigSession::data_feed_in(const struct sr_dev_inst *sdi,
@@ -290,22 +601,17 @@ void SigSession::data_feed_in(const struct sr_dev_inst *sdi,
 
 	switch (packet->type) {
 	case SR_DF_HEADER:
-	{
-		lock_guard<mutex> lock(_signals_mutex);
-		_signals.clear();
+		feed_in_header(sdi);
 		break;
-	}
 
-	case SR_DF_META_LOGIC:
+	case SR_DF_META:
 		assert(packet->payload);
-		feed_in_meta_logic(sdi,
-			*(const sr_datafeed_meta_logic*)packet->payload);
+		feed_in_meta(sdi,
+			*(const sr_datafeed_meta*)packet->payload);
 		break;
 
-	case SR_DF_META_ANALOG:
-		assert(packet->payload);
-		feed_in_meta_analog(sdi,
-			*(const sr_datafeed_meta_analog*)packet->payload);
+	case SR_DF_FRAME_BEGIN:
+		feed_in_frame_begin();
 		break;
 
 	case SR_DF_LOGIC:
@@ -323,17 +629,18 @@ void SigSession::data_feed_in(const struct sr_dev_inst *sdi,
 		{
 			lock_guard<mutex> lock(_data_mutex);
 			_cur_logic_snapshot.reset();
-			_cur_analog_snapshot.reset();
+			_cur_analog_snapshots.clear();
 		}
-		data_updated();
+		frame_ended();
 		break;
 	}
 	}
 }
 
 void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi,
-	const struct sr_datafeed_packet *packet)
+	const struct sr_datafeed_packet *packet, void *cb_data)
 {
+	(void) cb_data;
 	assert(_session);
 	_session->data_feed_in(sdi, packet);
 }