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Thirdparty/Pangolin/include/pangolin/log/packet.h

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+/* This file is part of the Pangolin Project.
+ * http://github.com/stevenlovegrove/Pangolin
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+#include <mutex>
+
+#include <pangolin/log/packetstream.h>
+#include <pangolin/log/packetstream_source.h>
+
+namespace pangolin {
+
+// Encapsulate serialized reading of Packet from stream.
+struct Packet
+{
+    Packet(PacketStream& s, std::unique_lock<std::recursive_mutex>&& mutex, std::vector<PacketStreamSource>& srcs);
+    Packet(const Packet&) = delete;
+    Packet(Packet&& o);
+    ~Packet();
+
+    size_t BytesRead() const;
+    int BytesRemaining() const;
+
+    PacketStream& Stream()
+    {
+        return _stream;
+    }
+
+    PacketStreamSourceId src;
+    int64_t time;
+    size_t size;
+    size_t sequence_num;
+    picojson::value meta;
+    std::streampos frame_streampos;
+
+private:
+    void ParsePacketHeader(PacketStream& s, std::vector<PacketStreamSource>& srcs);
+    void ReadRemaining();
+
+    PacketStream& _stream;
+
+    std::unique_lock<std::recursive_mutex> lock;
+
+    std::streampos data_streampos;
+    size_t _data_len;
+};
+
+}