X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fsigsession.cpp;h=bda4b0d32c38c03fe5d7c26a5645ae03f85b64cc;hp=fc26a23d784b0f5b2c11fecf993e01358f582428;hb=b087ba7fd88610cbf54f6371367c7b9f9829dc63;hpb=6745ffbbcf4d8bc858c9094f1e95683a529382a7

diff --git a/pv/sigsession.cpp b/pv/sigsession.cpp
index fc26a23d..bda4b0d3 100644
--- a/pv/sigsession.cpp
+++ b/pv/sigsession.cpp
@@ -20,6 +20,7 @@
 
 #include "sigsession.h"
 
+#include "devicemanager.h"
 #include "data/analog.h"
 #include "data/analogsnapshot.h"
 #include "data/logic.h"
@@ -27,10 +28,12 @@
 #include "view/analogsignal.h"
 #include "view/logicsignal.h"
 
-#include <QDebug>
-
 #include <assert.h>
 
+#include <sys/stat.h>
+
+#include <QDebug>
+
 using namespace boost;
 using namespace std;
 
@@ -39,7 +42,9 @@ 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
@@ -54,15 +59,45 @@ SigSession::~SigSession()
 		_sampling_thread->join();
 	_sampling_thread.reset();
 
+	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();
+}
+
+void SigSession::release_device(struct sr_dev_inst *sdi)
+{
+	(void)sdi;
+
+	assert(_capture_state == Stopped);
+	_sdi = NULL;
+	update_signals();
+}
+
+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));
+		&SigSession::load_thread_proc, this, name,
+		error_handler));
 }
 
 SigSession::capture_state SigSession::get_capture_state() const
@@ -71,14 +106,35 @@ SigSession::capture_state SigSession::get_capture_state() const
 	return _capture_state;
 }
 
-void SigSession::start_capture(struct sr_dev_inst *sdi,
-	uint64_t record_length)
+void SigSession::start_capture(uint64_t record_length,
+	function<void (const QString)> error_handler)
 {
 	stop_capture();
 
+	// Check that a device instance has been selected.
+	if (!_sdi) {
+		qDebug() << "No device selected";
+		return;
+	}
+
+	// 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.reset(new boost::thread(
-		&SigSession::sample_thread_proc, this, sdi,
-		record_length));
+		&SigSession::sample_thread_proc, this, _sdi,
+		record_length, error_handler));
 }
 
 void SigSession::stop_capture()
@@ -112,140 +168,266 @@ void SigSession::set_capture_state(capture_state state)
 	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;
-	}
+	int i;
 
-	sr_session_datafeed_callback_add(data_feed_in_proc);
-
-	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)
 {
-	assert(sdi);
+	struct stat st;
+	sr_input *in;
 
-	sr_session_new();
-	sr_session_datafeed_callback_add(data_feed_in_proc);
+	if (!format && !(format =
+		determine_input_file_format(filename.c_str()))) {
+		/* The exact cause was already logged. */
+		return NULL;
+	}
 
-	if (sr_session_dev_add(sdi) != SR_OK) {
-		qDebug() << "Failed to use device.";
-		sr_session_destroy();
-		return;
+	if (stat(filename.c_str(), &st) == -1) {
+		error_handler(tr("Failed to load file"));
+		return NULL;
 	}
 
-	// Set the sample limit
-	if (sr_config_set(sdi, SR_CONF_LIMIT_SAMPLES,
-		&record_length) != SR_OK) {
-		qDebug() << "Failed to configure time-based sample limit.";
-		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_header(const sr_dev_inst *sdi)
+void SigSession::update_signals()
 {
+	assert(_capture_state == Stopped);
+
 	shared_ptr<view::Signal> signal;
-	uint64_t *sample_rate;
 	unsigned int logic_probe_count = 0;
 	unsigned int analog_probe_count = 0;
 
 	// Detect what data types we will receive
-	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;
+	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;
 
-		case SR_PROBE_ANALOG:
-			analog_probe_count++;
-			break;
+			switch(probe->type) {
+			case SR_PROBE_LOGIC:
+				logic_probe_count++;
+				break;
+
+			case SR_PROBE_ANALOG:
+				analog_probe_count++;
+				break;
+			}
 		}
 	}
 
-	// Read out the sample rate
-	assert(sdi->driver);
-	assert(sr_config_get(sdi->driver, SR_CONF_SAMPLERATE,
-		(const void**)&sample_rate, sdi) == SR_OK);
-
-	// Create data containers for the coming data snapshots
+	// Create data containers for the data snapshots
 	{
 		lock_guard<mutex> data_lock(_data_mutex);
 
+		_logic_data.reset();
 		if (logic_probe_count != 0) {
 			_logic_data.reset(new data::Logic(
-				logic_probe_count, *sample_rate));
+				logic_probe_count));
 			assert(_logic_data);
 		}
 
+		_analog_data.reset();
 		if (analog_probe_count != 0) {
-			_analog_data.reset(new data::Analog(*sample_rate));
+			_analog_data.reset(new data::Analog());
 			assert(_analog_data);
 		}
 	}
 
-	// Make the logic probe list
+	// Make the Signals list
 	{
 		lock_guard<mutex> lock(_signals_mutex);
 
 		_signals.clear();
 
-		for (const GSList *l = sdi->probes; l; l = l->next) {
-			const sr_probe *const probe =
-				(const sr_probe *)l->data;
-			assert(probe);
-			if (!probe->enabled)
-				continue;
+		if(_sdi) {
+			for (const GSList *l = _sdi->probes; l; l = l->next) {
+				const sr_probe *const probe =
+					(const sr_probe *)l->data;
+				assert(probe);
+				if (!probe->enabled)
+					continue;
+
+				switch(probe->type) {
+				case SR_PROBE_LOGIC:
+					signal = shared_ptr<view::Signal>(
+						new view::LogicSignal(
+							probe->name,
+							_logic_data,
+							probe->index));
+					break;
+
+				case SR_PROBE_ANALOG:
+					signal = shared_ptr<view::Signal>(
+						new view::AnalogSignal(
+							probe->name,
+							_analog_data,
+							probe->index));
+					break;
+				}
+
+				_signals.push_back(signal);
+			}
+		}
+	}
 
-			switch(probe->type) {
-			case SR_PROBE_LOGIC:
-				signal = shared_ptr<view::Signal>(
-					new view::LogicSignal(probe->name,
-						_logic_data, probe->index));
-				break;
+	signals_changed();
+}
 
-			case SR_PROBE_ANALOG:
-				signal = shared_ptr<view::Signal>(
-					new view::AnalogSignal(probe->name,
-						_analog_data));
-				break;
-			}
+void SigSession::load_thread_proc(const string name,
+	function<void (const QString)> error_handler)
+{
+	sr_input *in = NULL;
+
+	if (sr_session_load(name.c_str()) == SR_OK) {
+		if (sr_session_start() != SR_OK) {
+			error_handler(tr("Failed to start session."));
+			return;
+		}
+	}
+	else if(!(in = load_input_file_format(name.c_str(), error_handler)))
+		return;
+
+	sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
+
+	set_capture_state(Running);
+
+	if(in) {
+		assert(in->format);
+		in->format->loadfile(in, name.c_str());
+	} else
+		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);
+
+	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;
+	}
 
-			_signals.push_back(signal);
+	// Set the sample limit
+	if (sr_config_set(sdi, 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(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::feed_in_header(const sr_dev_inst *sdi)
+{
+	GVariant *gvar;
+	uint64_t sample_rate = 0;
+
+	// Read out the sample rate
+	if(sdi->driver)
+	{
+		const int ret = sr_config_get(sdi->driver,
+			SR_CONF_SAMPLERATE, &gvar, sdi);
+		if (ret != SR_OK) {
+			qDebug("Failed to get samplerate\n");
+			return;
 		}
 
-		signals_changed();
+		sample_rate = g_variant_get_uint64(gvar);
+		g_variant_unref(gvar);
 	}
+
+	if(_analog_data)
+		_analog_data->set_samplerate(sample_rate);
+	if(_logic_data)
+		_logic_data->set_samplerate(sample_rate);
 }
 
 void SigSession::feed_in_meta(const sr_dev_inst *sdi,
@@ -270,10 +452,15 @@ void SigSession::feed_in_meta(const sr_dev_inst *sdi,
 void SigSession::feed_in_logic(const sr_datafeed_logic &logic)
 {
 	lock_guard<mutex> lock(_data_mutex);
-	if (!_cur_logic_snapshot)
+
+	if (!_logic_data)
 	{
-		assert(_logic_data);
+		qDebug() << "Unexpected logic packet";
+		return;
+	}
 
+	if (!_cur_logic_snapshot)
+	{
 		// Create a new data snapshot
 		_cur_logic_snapshot = shared_ptr<data::LogicSnapshot>(
 			new data::LogicSnapshot(logic));
@@ -291,10 +478,15 @@ 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 (!_cur_analog_snapshot)
+
+	if(!_analog_data)
 	{
-		assert(_analog_data);
+		qDebug() << "Unexpected analog packet";
+		return;	// This analog packet was not expected.
+	}
 
+	if (!_cur_analog_snapshot)
+	{
 		// Create a new data snapshot
 		_cur_analog_snapshot = shared_ptr<data::AnalogSnapshot>(
 			new data::AnalogSnapshot(analog));
@@ -350,8 +542,9 @@ 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);
 }