rename project for upgrade

DSView/pv/data/snapshot.cpp

@@ -0,0 +1,133 @@
+/*
+ * This file is part of the DSLogic-gui project.
+ * DSLogic-gui is based on PulseView.
+ *
+ * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
+ * Copyright (C) 2013 DreamSourceLab <dreamsourcelab@dreamsourcelab.com>
+ *
+ * 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, uint64_t total_sample_count, unsigned int channel_num) :
+    _data(NULL),
+    _channel_num(channel_num),
+    _sample_count(0),
+    _total_sample_count(total_sample_count * channel_num),
+    _ring_sample_count(0),
+    _unit_size(unit_size)
+{
+	boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+	assert(_unit_size > 0);
+}
+
+Snapshot::~Snapshot()
+{
+	boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+    if (_data != NULL)
+        free(_data);
+    _data = NULL;
+}
+
+int Snapshot::init(uint64_t _total_sample_len)
+{
+    boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+    _data = malloc(_total_sample_len * _unit_size +
+        sizeof(uint64_t));
+
+    if (_data == NULL)
+        return SR_ERR_MALLOC;
+    else
+        return SR_OK;
+}
+
+bool Snapshot::buf_null() const
+{
+    if (_data == NULL)
+        return true;
+    else
+        return false;
+}
+
+uint64_t Snapshot::get_sample_count() const
+{
+	boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+    return _sample_count / _channel_num;
+}
+
+void* Snapshot::get_data() const
+{
+    boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+    return _data;
+}
+
+int Snapshot::unit_size() const
+{
+    boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+    return _unit_size;
+}
+
+unsigned int Snapshot::get_channel_num() const
+{
+    boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+    return _channel_num;
+}
+
+uint64_t Snapshot::get_sample(uint64_t index) const
+{
+    boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+
+    assert(_data);
+    assert(index < _sample_count);
+
+    return *(uint64_t*)((uint8_t*)_data + index * _unit_size);
+}
+
+void Snapshot::append_data(void *data, uint64_t samples)
+{
+//	boost::lock_guard<boost::recursive_mutex> lock(_mutex);
+//	_data = realloc(_data, (_sample_count + samples) * _unit_size +
+//		sizeof(uint64_t));
+    if (_sample_count + samples < _total_sample_count)
+        _sample_count += samples;
+    else
+        _sample_count = _total_sample_count;
+
+    if (_ring_sample_count + samples > _total_sample_count) {
+        memcpy((uint8_t*)_data + _ring_sample_count * _unit_size,
+            data, (_total_sample_count - _ring_sample_count) * _unit_size);
+        _ring_sample_count = (samples + _ring_sample_count - _total_sample_count) % _total_sample_count;
+        memcpy((uint8_t*)_data,
+            data, _ring_sample_count * _unit_size);
+    } else {
+        memcpy((uint8_t*)_data + _ring_sample_count * _unit_size,
+            data, samples * _unit_size);
+        _ring_sample_count += samples;
+    }
+}
+
+} // namespace data
+} // namespace pv