X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;ds=sidebyside;f=pv%2Fdata%2Fsnapshot.cpp;fp=pv%2Fdata%2Fsnapshot.cpp;h=f3855e06c34ce9bf7cf829b5b27085f70bcb82e7;hb=1b1ec774978b65209ce2b454cbf81da499b797d2;hp=0000000000000000000000000000000000000000;hpb=4104d7f3fab3ab5422e7ceb9fdb40b944ca0ba92;p=pulseview.git

diff --git a/pv/data/snapshot.cpp b/pv/data/snapshot.cpp
new file mode 100644
index 0000000..f3855e0
--- /dev/null
+++ b/pv/data/snapshot.cpp
@@ -0,0 +1,63 @@
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include "snapshot.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+using namespace boost;
+
+namespace pv {
+namespace data {
+
+Snapshot::Snapshot(int unit_size) :
+	_data(NULL),
+	_sample_count(0),
+	_unit_size(unit_size)
+{
+	lock_guard<recursive_mutex> lock(_mutex);
+	assert(_unit_size > 0);
+}
+
+Snapshot::~Snapshot()
+{
+	lock_guard<recursive_mutex> lock(_mutex);
+	free(_data);
+}
+
+uint64_t Snapshot::get_sample_count()
+{
+	lock_guard<recursive_mutex> lock(_mutex);
+	return _sample_count;
+}
+
+void Snapshot::append_data(void *data, uint64_t samples)
+{
+	lock_guard<recursive_mutex> lock(_mutex);
+	_data = realloc(_data, (_sample_count + samples) * _unit_size);
+	memcpy((uint8_t*)_data + _sample_count * _unit_size,
+		data, samples * _unit_size);
+	_sample_count += samples;
+}
+
+} // namespace data
+} // namespace pv