X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fsigsession.cpp;h=3213758ef263894c215cc83055849593700aa099;hp=03cf238ac42f11b766979a4d6068e5ac995ae10b;hb=7d0c935c488742ca45bdcd73bf8573e0e6f67aab;hpb=1b1ec774978b65209ce2b454cbf81da499b797d2

diff --git a/pv/sigsession.cpp b/pv/sigsession.cpp
index 03cf238a..3213758e 100644
--- a/pv/sigsession.cpp
+++ b/pv/sigsession.cpp
@@ -18,19 +18,33 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#include <libsigrokdecode/libsigrokdecode.h>
+
 #include "sigsession.h"
 
+#include "devicemanager.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 <assert.h>
 
+#include <stdexcept>
+
+#include <boost/foreach.hpp>
+
+#include <sys/stat.h>
+
+#include <QDebug>
+
 using namespace boost;
 using namespace std;
 
@@ -39,7 +53,9 @@ namespace pv {
 // TODO: This should not be necessary
 SigSession* SigSession::_session = NULL;
 
-SigSession::SigSession() :
+SigSession::SigSession(DeviceManager &device_manager) :
+	_device_manager(device_manager),
+	_sdi(NULL),
 	_capture_state(Stopped)
 {
 	// TODO: This should not be necessary
@@ -50,19 +66,81 @@ SigSession::~SigSession()
 {
 	stop_capture();
 
-	if (_sampling_thread.get())
-		_sampling_thread->join();
-	_sampling_thread.reset();
+	_sampling_thread.join();
+
+	if (_sdi)
+		_device_manager.release_device(_sdi);
+	_sdi = NULL;
 
 	// TODO: This should not be necessary
 	_session = NULL;
 }
 
-void SigSession::load_file(const string &name)
+struct sr_dev_inst* SigSession::get_device() const
+{
+	return _sdi;
+}
+
+void SigSession::set_device(struct sr_dev_inst *sdi)
+{
+	if (_sdi)
+		_device_manager.release_device(_sdi);
+	if (sdi)
+		_device_manager.use_device(sdi, this);
+	_sdi = sdi;
+	update_signals(sdi);
+}
+
+void SigSession::release_device(struct sr_dev_inst *sdi)
+{
+	(void)sdi;
+
+	assert(_capture_state == Stopped);
+	_sdi = NULL;
+	update_signals(NULL);
+}
+
+void SigSession::load_file(const string &name,
+	function<void (const QString)> error_handler)
 {
 	stop_capture();
-	_sampling_thread.reset(new boost::thread(
-		&SigSession::load_thread_proc, this, name));
+
+	if (sr_session_load(name.c_str()) == SR_OK) {
+		GSList *devlist = NULL;
+		sr_session_dev_list(&devlist);
+
+		if (!devlist || !devlist->data ||
+			sr_session_start() != SR_OK) {
+			error_handler(tr("Failed to start session."));
+			return;
+		}
+
+		sr_dev_inst *const sdi = (sr_dev_inst*)devlist->data;
+		g_slist_free(devlist);
+
+		_decode_traces.clear();
+		update_signals(sdi);
+		read_sample_rate(sdi);
+
+		_sampling_thread = boost::thread(
+			&SigSession::load_session_thread_proc, this,
+			error_handler);
+
+	} else {
+		sr_input *in = NULL;
+
+		if (!(in = load_input_file_format(name.c_str(),
+			error_handler)))
+			return;
+
+		_decode_traces.clear();
+		update_signals(in->sdi);
+		read_sample_rate(in->sdi);
+
+		_sampling_thread = boost::thread(
+			&SigSession::load_input_thread_proc, this,
+			name, in, error_handler);
+	}
 }
 
 SigSession::capture_state SigSession::get_capture_state() const
@@ -71,17 +149,35 @@ 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(uint64_t record_length,
+	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 (!_sdi) {
+		qDebug() << "No device selected";
+		return;
+	}
 
-	_sampling_thread.reset(new boost::thread(
-		&SigSession::sample_thread_proc, this, sdi,
-		record_length));
+	// Check that at least one probe is enabled
+	const GSList *l;
+	for (l = _sdi->probes; l; l = l->next) {
+		sr_probe *const probe = (sr_probe*)l->data;
+		assert(probe);
+		if (probe->enabled)
+			break;
+	}
+
+	if (!l) {
+		error_handler(tr("No probes enabled."));
+		return;
+	}
+
+	// Begin the session
+	_sampling_thread = boost::thread(
+		&SigSession::sample_thread_proc, this, _sdi,
+		record_length, error_handler);
 }
 
 void SigSession::stop_capture()
@@ -92,12 +188,10 @@ void SigSession::stop_capture()
 	sr_session_stop();
 
 	// Check that sampling stopped
-	if (_sampling_thread.get())
-		_sampling_thread->join();
-	_sampling_thread.reset();
+	_sampling_thread.join();
 }
 
-vector< shared_ptr<view::Signal> > SigSession::get_signals()
+vector< shared_ptr<view::Signal> > SigSession::get_signals() const
 {
 	lock_guard<mutex> lock(_signals_mutex);
 	return _signals;
@@ -108,147 +202,406 @@ boost::shared_ptr<data::Logic> SigSession::get_data()
 	return _logic_data;
 }
 
+bool SigSession::add_decoder(srd_decoder *const dec)
+{
+	map<const srd_probe*, 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(dec));
+
+		// Auto select the initial probes
+		for(const GSList *i = dec->probes; i; i = i->next)
+		{
+			const srd_probe *const probe = (const srd_probe*)i->data;
+			BOOST_FOREACH(shared_ptr<view::Signal> s, _signals)
+			{
+				shared_ptr<view::LogicSignal> l =
+					dynamic_pointer_cast<view::LogicSignal>(s);
+				if (l && QString(probe->name).toLower().contains(
+					l->get_name().toLower()))
+					probes[probe] = 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
+{
+	lock_guard<mutex> lock(_signals_mutex);
+	return _decode_traces;
+}
+
+void SigSession::remove_decode_signal(view::DecodeTrace *signal)
+{
+	for (vector< shared_ptr<view::DecodeTrace> >::iterator i =
+		_decode_traces.begin();
+		i != _decode_traces.end();
+		i++)
+		if ((*i).get() == signal)
+		{
+			_decode_traces.erase(i);
+			signals_changed();
+			return;
+		}
+}
+
 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)
+/**
+ * Attempts to autodetect the format. Failing that
+ * @param filename The filename of the input file.
+ * @return A pointer to the 'struct sr_input_format' that should be used,
+ *         or NULL if no input format was selected or auto-detected.
+ */
+sr_input_format* SigSession::determine_input_file_format(
+	const string &filename)
 {
-	if (sr_session_load(name.c_str()) != SR_OK) {
-		qDebug() << "Failed to load file.";
-		return;
-	}
-
-	sr_session_datafeed_callback_add(data_feed_in_proc);
+	int i;
 
-	if (sr_session_start() != SR_OK) {
-		qDebug() << "Failed to start session.";
-		return;
+	/* If there are no input formats, return NULL right away. */
+	sr_input_format *const *const inputs = sr_input_list();
+	if (!inputs) {
+		g_critical("No supported input formats available.");
+		return NULL;
 	}
 
-	set_capture_state(Running);
+	/* Otherwise, try to find an input module that can handle this file. */
+	for (i = 0; inputs[i]; i++) {
+		if (inputs[i]->format_match(filename.c_str()))
+			break;
+	}
 
-	sr_session_run();
-	sr_session_stop();
+	/* Return NULL if no input module wanted to touch this. */
+	if (!inputs[i]) {
+		g_critical("Error: no matching input module found.");
+		return NULL;
+	}
 
-	set_capture_state(Stopped);
+	return inputs[i];
 }
 
-void SigSession::sample_thread_proc(struct sr_dev_inst *sdi,
-	uint64_t record_length)
+sr_input* SigSession::load_input_file_format(const string &filename,
+	function<void (const QString)> error_handler,
+	sr_input_format *format)
 {
-	sr_session_new();
-	sr_session_datafeed_callback_add(data_feed_in_proc);
+	struct stat st;
+	sr_input *in;
 
-	if (sr_session_dev_add(sdi) != SR_OK) {
-		qDebug() << "Failed to use device.";
-		sr_session_destroy();
-		return;
+	if (!format && !(format =
+		determine_input_file_format(filename.c_str()))) {
+		/* The exact cause was already logged. */
+		return NULL;
 	}
 
-	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;
+	if (stat(filename.c_str(), &st) == -1) {
+		error_handler(tr("Failed to load file"));
+		return NULL;
 	}
 
-	{
-		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();
-			return;
-		}
+	/* Initialize the input module. */
+	if (!(in = new sr_input)) {
+		qDebug("Failed to allocate input module.\n");
+		return NULL;
 	}
 
-	if (sr_session_start() != SR_OK) {
-		qDebug() << "Failed to start session.";
-		return;
+	in->format = format;
+	in->param = NULL;
+	if (in->format->init &&
+		in->format->init(in, filename.c_str()) != SR_OK) {
+		qDebug("Input format init failed.\n");
+		return NULL;
 	}
 
-	set_capture_state(Running);
+	sr_session_new();
 
-	sr_session_run();
-	sr_session_destroy();
+	if (sr_session_dev_add(in->sdi) != SR_OK) {
+		qDebug("Failed to use device.\n");
+		sr_session_destroy();
+		return NULL;
+	}
 
-	set_capture_state(Stopped);
+	return in;
 }
 
-void SigSession::feed_in_meta_logic(const struct sr_dev_inst *sdi,
-	const sr_datafeed_meta_logic &meta_logic)
+void SigSession::update_signals(const sr_dev_inst *const sdi)
 {
-	using view::LogicSignal;
+	assert(_capture_state == Stopped);
+
+	shared_ptr<view::Signal> signal;
+	unsigned int logic_probe_count = 0;
+	unsigned int analog_probe_count = 0;
+
+	// Clear the decode traces
+	_decode_traces.clear();
+
+	// Detect what data types we will receive
+	if(sdi) {
+		for (const GSList *l = sdi->probes; l; l = l->next) {
+			const sr_probe *const probe = (const sr_probe *)l->data;
+			if (!probe->enabled)
+				continue;
+
+			switch(probe->type) {
+			case SR_PROBE_LOGIC:
+				logic_probe_count++;
+				break;
+
+			case SR_PROBE_ANALOG:
+				analog_probe_count++;
+				break;
+			}
+		}
+	}
 
+	// Create data containers for the data snapshots
 	{
 		lock_guard<mutex> data_lock(_data_mutex);
-		lock_guard<mutex> sampling_lock(_sampling_mutex);
 
-		// Create an empty data::Logic for coming data snapshots
-		_logic_data.reset(new data::Logic(meta_logic, _sample_rate));
-		assert(_logic_data);
-		if (!_logic_data)
-			return;
+		_logic_data.reset();
+		if (logic_probe_count != 0) {
+			_logic_data.reset(new data::Logic(
+				logic_probe_count));
+			assert(_logic_data);
+		}
+
+		_analog_data.reset();
+		if (analog_probe_count != 0) {
+			_analog_data.reset(new data::Analog());
+			assert(_analog_data);
+		}
 	}
 
+	// Make the Signals list
 	{
 		lock_guard<mutex> lock(_signals_mutex);
 
-		// 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.clear();
+
+		if(sdi) {
+			for (const GSList *l = sdi->probes; l; l = l->next) {
+				sr_probe *const probe =	(sr_probe *)l->data;
+				assert(probe);
+
+				switch(probe->type) {
+				case SR_PROBE_LOGIC:
+					signal = shared_ptr<view::Signal>(
+						new view::LogicSignal(*this, probe,
+							_logic_data));
+					break;
+
+				case SR_PROBE_ANALOG:
+					signal = shared_ptr<view::Signal>(
+						new view::AnalogSignal(*this, probe,
+							_analog_data));
+					break;
+				}
+
 				_signals.push_back(signal);
 			}
 		}
+	}
 
-		signals_changed();
+	signals_changed();
+}
+
+bool SigSession::is_trigger_enabled() const
+{
+	assert(_sdi);
+	for (const GSList *l = _sdi->probes; l; l = l->next) {
+		const sr_probe *const p = (const sr_probe *)l->data;
+		assert(p);
+		if (p->trigger && p->trigger[0] != '\0')
+			return true;
 	}
+
+	return false;
 }
 
-void SigSession::feed_in_meta_analog(const struct sr_dev_inst *sdi,
-	const sr_datafeed_meta_analog &meta_analog)
+void SigSession::read_sample_rate(const sr_dev_inst *const sdi)
 {
-	using view::AnalogSignal;
+	GVariant *gvar;
+	uint64_t sample_rate = 0;
 
+	// Read out the sample rate
+	if(sdi->driver)
 	{
-		lock_guard<mutex> data_lock(_data_mutex);
-		lock_guard<mutex> sampling_lock(_sampling_mutex);
-
-		// Create an empty data::Analog for coming data snapshots
-		_analog_data.reset(new data::Analog(
-			meta_analog, _sample_rate));
-		assert(_analog_data);
-		if (!_analog_data)
+		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;
+		}
+
+		sample_rate = g_variant_get_uint64(gvar);
+		g_variant_unref(gvar);
 	}
 
-	{
-		lock_guard<mutex> lock(_signals_mutex);
+	if(_analog_data)
+		_analog_data->set_samplerate(sample_rate);
+	if(_logic_data)
+		_logic_data->set_samplerate(sample_rate);
+}
+
+void SigSession::load_session_thread_proc(
+	function<void (const QString)> error_handler)
+{
+	(void)error_handler;
+
+	sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
+
+	set_capture_state(Running);
+
+	sr_session_run();
+
+	sr_session_destroy();
+	set_capture_state(Stopped);
+
+	// Confirm that SR_DF_END was received
+	assert(!_cur_logic_snapshot);
+	assert(!_cur_analog_snapshot);
+}
+
+void SigSession::load_input_thread_proc(const string name,
+	sr_input *in, function<void (const QString)> error_handler)
+{
+	(void)error_handler;
+
+	assert(in);
+	assert(in->format);
+
+	sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
+
+	set_capture_state(Running);
+
+	in->format->loadfile(in, name.c_str());
+
+	sr_session_destroy();
+	set_capture_state(Stopped);
+
+	// Confirm that SR_DF_END was received
+	assert(!_cur_logic_snapshot);
+	assert(!_cur_analog_snapshot);
+
+	delete in;
+}
+
+void SigSession::sample_thread_proc(struct sr_dev_inst *sdi,
+	uint64_t record_length,
+	function<void (const QString)> error_handler)
+{
+	assert(sdi);
+	assert(error_handler);
+
+	sr_session_new();
+	sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
+
+	if (sr_session_dev_add(sdi) != SR_OK) {
+		error_handler(tr("Failed to use device."));
+		sr_session_destroy();
+		return;
+	}
+
+	// Set the sample limit
+	if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES,
+		g_variant_new_uint64(record_length)) != SR_OK) {
+		error_handler(tr("Failed to configure "
+			"time-based sample limit."));
+		sr_session_destroy();
+		return;
+	}
+
+	if (sr_session_start() != SR_OK) {
+		error_handler(tr("Failed to start session."));
+		return;
+	}
+
+	set_capture_state(is_trigger_enabled() ? AwaitingTrigger : Running);
+
+	sr_session_run();
+	sr_session_destroy();
+
+	set_capture_state(Stopped);
+
+	// Confirm that SR_DF_END was received
+	assert(!_cur_logic_snapshot);
+	assert(!_cur_analog_snapshot);
+}
 
-		// Add the signals
-		shared_ptr<AnalogSignal> signal(
-			new AnalogSignal(QString("???"), _analog_data));
-		_signals.push_back(signal);
+void SigSession::feed_in_header(const sr_dev_inst *sdi)
+{
+	read_sample_rate(sdi);
+}
 
-		signals_changed();
+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;
+		}
 	}
+
+	signals_changed();
 }
 
 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)
 	{
+		set_capture_state(Running);
+
 		// Create a new data snapshot
 		_cur_logic_snapshot = shared_ptr<data::LogicSnapshot>(
 			new data::LogicSnapshot(logic));
@@ -266,8 +619,17 @@ void SigSession::feed_in_logic(const sr_datafeed_logic &logic)
 void SigSession::feed_in_analog(const sr_datafeed_analog &analog)
 {
 	lock_guard<mutex> lock(_data_mutex);
+
+	if(!_analog_data)
+	{
+		qDebug() << "Unexpected analog packet";
+		return;	// This analog packet was not expected.
+	}
+
 	if (!_cur_analog_snapshot)
 	{
+		set_capture_state(Running);
+
 		// Create a new data snapshot
 		_cur_analog_snapshot = shared_ptr<data::AnalogSnapshot>(
 			new data::AnalogSnapshot(analog));
@@ -290,22 +652,13 @@ 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();
-		break;
-	}
-
-	case SR_DF_META_LOGIC:
-		assert(packet->payload);
-		feed_in_meta_logic(sdi,
-			*(const sr_datafeed_meta_logic*)packet->payload);
+		feed_in_header(sdi);
 		break;
 
-	case SR_DF_META_ANALOG:
+	case SR_DF_META:
 		assert(packet->payload);
-		feed_in_meta_analog(sdi,
-			*(const sr_datafeed_meta_analog*)packet->payload);
+		feed_in_meta(sdi,
+			*(const sr_datafeed_meta*)packet->payload);
 		break;
 
 	case SR_DF_LOGIC:
@@ -332,8 +685,9 @@ void SigSession::data_feed_in(const struct sr_dev_inst *sdi,
 }
 
 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);
 }