From: Gerhard Sittig <redacted>
Date: Sun, 28 Jan 2018 20:02:54 +0000 (+0100)
Subject: DecodeSignal: only pass non-zero sample rate to decoders
X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=commitdiff_plain;h=4349dc21e726fe6e9e1fba59f9f06a9bdc718078

DecodeSignal: only pass non-zero sample rate to decoders

As reported in bug #1118 not all input sources provide a samplerate, and
decoder instances may not cope with a rate spec of 0. Only pass non-zero
sample rates to the decoder stack. This improves robustness in addition
to the specific fix for #1118 in the decoders' implementations.
---

diff --git a/pv/data/decodesignal.cpp b/pv/data/decodesignal.cpp
index 2a3ad14b..1ff9d76d 100644
--- a/pv/data/decodesignal.cpp
+++ b/pv/data/decodesignal.cpp
@@ -978,6 +978,8 @@ void DecodeSignal::decode_proc()
 
 void DecodeSignal::start_srd_session()
 {
+	uint64_t samplerate;
+
 	if (srd_session_)
 		stop_srd_session();
 
@@ -1004,8 +1006,10 @@ void DecodeSignal::start_srd_session()
 	}
 
 	// Start the session
-	srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
-		g_variant_new_uint64(segments_.at(current_segment_id_).samplerate));
+	samplerate = segments_.at(current_segment_id_).samplerate;
+	if (samplerate)
+		srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
+			g_variant_new_uint64(samplerate));
 
 	srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN,
 		DecodeSignal::annotation_callback, this);