X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fsigsession.cpp;h=354082c7262c351a3fe09423761823e7beab302d;hp=782f9c791b472ab24bb848958e847ded490d63d5;hb=5ac961e325a9d2cbafdd8fae3a6704d7348cf19a;hpb=d5bf2c6ce9dfcffdc94c6b71c8f015e88b8bc2b8

diff --git a/pv/sigsession.cpp b/pv/sigsession.cpp
index 782f9c79..354082c7 100644
--- a/pv/sigsession.cpp
+++ b/pv/sigsession.cpp
@@ -40,6 +40,7 @@ namespace pv {
 SigSession* SigSession::_session = NULL;
 
 SigSession::SigSession() :
+	_sdi(NULL),
 	_capture_state(Stopped)
 {
 	// TODO: This should not be necessary
@@ -58,6 +59,11 @@ SigSession::~SigSession()
 	_session = NULL;
 }
 
+void SigSession::set_device(struct sr_dev_inst *sdi)
+{
+	_sdi = sdi;
+}
+
 void SigSession::load_file(const string &name,
 	function<void (const QString)> error_handler)
 {
@@ -73,15 +79,20 @@ 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) {
+	for (l = _sdi->probes; l; l = l->next) {
 		sr_probe *const probe = (sr_probe*)l->data;
 		assert(probe);
 		if (probe->enabled)
@@ -95,7 +106,7 @@ void SigSession::start_capture(struct sr_dev_inst *sdi,
 
 	// Begin the session
 	_sampling_thread.reset(new boost::thread(
-		&SigSession::sample_thread_proc, this, sdi,
+		&SigSession::sample_thread_proc, this, _sdi,
 		record_length, error_handler));
 }
 
@@ -221,7 +232,11 @@ void SigSession::feed_in_header(const sr_dev_inst *sdi)
 
 	const int ret = sr_config_get(sdi->driver, SR_CONF_SAMPLERATE,
 		&gvar, sdi);
-	assert(ret == SR_OK);
+	if (ret != SR_OK) {
+		qDebug("Failed to get samplerate\n");
+		return;
+	}
+
 	sample_rate = g_variant_get_uint64(gvar);
 	g_variant_unref(gvar);