Start implementation.

src/SinkImpl.h

@@ -0,0 +1,50 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2016. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#ifndef CAMERASERVER_SINKIMPL_H_
+#define CAMERASERVER_SINKIMPL_H_
+
+#include <memory>
+#include <mutex>
+#include <string>
+
+#include "llvm/StringRef.h"
+
+namespace cs {
+
+class Frame;
+class SourceImpl;
+
+class SinkImpl {
+ public:
+  SinkImpl(llvm::StringRef name);
+  virtual ~SinkImpl() = default;
+  SinkImpl(const SinkImpl& queue) = delete;
+  SinkImpl& operator=(const SinkImpl& queue) = delete;
+
+  llvm::StringRef GetName() const { return m_name; }
+  virtual void GetDescription(llvm::SmallVectorImpl<char>& desc) const = 0;
+
+  void SetSource(std::shared_ptr<SourceImpl> source) {
+    std::lock_guard<std::mutex> lock(m_mutex);
+    m_source = source;
+  }
+
+  std::shared_ptr<SourceImpl> GetSource() const {
+    std::lock_guard<std::mutex> lock(m_mutex);
+    return m_source;
+  }
+
+ private:
+  std::string m_name;
+  mutable std::mutex m_mutex;
+  std::shared_ptr<SourceImpl> m_source;
+};
+
+}  // namespace cs
+
+#endif  // CAMERASERVER_SINKIMPL_H_