From: Joel Holdsworth <redacted>
Date: Mon, 26 Aug 2013 21:11:17 +0000 (+0100)
Subject: Added LogicSnapshot::get_samples
X-Git-Tag: pulseview-0.2.0~302
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=ed990f118d154cd487261d23986b7ad0ba4e24fe;p=pulseview.git

Added LogicSnapshot::get_samples
---

diff --git a/pv/data/logicsnapshot.cpp b/pv/data/logicsnapshot.cpp
index f77690e1..d32274b3 100644
--- a/pv/data/logicsnapshot.cpp
+++ b/pv/data/logicsnapshot.cpp
@@ -70,6 +70,22 @@ void LogicSnapshot::append_payload(
 	append_payload_to_mipmap();
 }
 
+void LogicSnapshot::get_samples(uint8_t *const data,
+	int64_t start_sample, int64_t end_sample) const
+{
+	assert(data);
+	assert(start_sample >= 0);
+	assert(start_sample < (int64_t)_sample_count);
+	assert(end_sample >= 0);
+	assert(end_sample < (int64_t)_sample_count);
+	assert(start_sample <= end_sample);
+
+	lock_guard<recursive_mutex> lock(_mutex);
+
+	const size_t size = (end_sample - start_sample) * _unit_size;
+	memcpy(data, (const uint8_t*)_data + start_sample, size);
+}
+
 void LogicSnapshot::reallocate_mipmap_level(MipMapLevel &m)
 {
 	const uint64_t new_data_length = ((m.length + MipMapDataUnit - 1) /
diff --git a/pv/data/logicsnapshot.h b/pv/data/logicsnapshot.h
index 9868a212..ecff5edc 100644
--- a/pv/data/logicsnapshot.h
+++ b/pv/data/logicsnapshot.h
@@ -64,6 +64,9 @@ public:
 
 	void append_payload(const sr_datafeed_logic &logic);
 
+	void get_samples(uint8_t *const data,
+		int64_t start_sample, int64_t end_sample) const;
+
 private:
 	void reallocate_mipmap_level(MipMapLevel &m);