X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=nageru%2Fdelay_analyzer.cpp;fp=nageru%2Fdelay_analyzer.cpp;h=e720c30a1472b4544c7f4a49a754d819129f25cb;hb=02f95f60afd99a0ae3b1cc67ea34a647dc09d357;hp=7e25738667e7330e0c29affb06337e2f51595858;hpb=bd01e11a41a19fef2315319909d8655cac359f0f;p=nageru

diff --git a/nageru/delay_analyzer.cpp b/nageru/delay_analyzer.cpp
index 7e25738..e720c30 100644
--- a/nageru/delay_analyzer.cpp
+++ b/nageru/delay_analyzer.cpp
@@ -47,6 +47,8 @@ void DelayAnalyzer::grab_clicked()
 	grabbing = true;
 	clip1.clear();
 	clip2.clear();
+	ui->peak_display_1->reset_base();
+	ui->peak_display_2->reset_base();
 	ui->peak_display_1->audio_clip_updated();
 	ui->peak_display_2->audio_clip_updated();
 }
@@ -121,7 +123,25 @@ void DelayAnalyzer::add_audio(DeviceSpec device_spec, const uint8_t *data, unsig
 		ui->peak_display_2->audio_clip_updated();
 	}
 
-	if (clip1.get_length_seconds() >= 1.0 && clip2.get_length_seconds() >= 1.0) {
+	if (clip1.empty() && clip2.empty()) {
+		// No interesting data yet.
+		return;
+	}
+
+	steady_clock::time_point base;
+	if (!clip1.empty() && !clip2.empty()) {
+		base = max(clip1.get_first_sample(), clip2.get_first_sample());
+	} else if (!clip1.empty()) {
+		base = clip1.get_first_sample();
+	} else {
+		assert(!clip2.empty());
+		base = clip2.get_first_sample();
+	}
+	ui->peak_display_1->set_base(base);
+	ui->peak_display_2->set_base(base);
+
+	if (clip1.get_length_seconds_after_base(base) >= 1.0 &&
+	    clip2.get_length_seconds_after_base(base) >= 1.0) {
 		grabbing = false;
 	}
 }