More bluetooth medium code.

internal/platform/implementation/linux/bluetooth_classic_socket.h

@@ -0,0 +1,61 @@
+#ifndef PLATFORM_IMPL_LINUX_BLUETOOTH_SOCKET_H_
+#define PLATFORM_IMPL_LINUX_BLUETOOTH_SOCKET_H_
+
+#include <memory>
+
+#include <systemd/sd-bus.h>
+
+#include "internal/platform/byte_array.h"
+#include "internal/platform/exception.h"
+#include "internal/platform/implementation/bluetooth_classic.h"
+
+namespace nearby {
+namespace linux {
+
+class BluetoothInputStream : public InputStream {
+public:
+  BluetoothInputStream(int fd) { fd_ = fd; };
+
+  ExceptionOr<ByteArray> Read(std::int64_t size) override;
+  ExceptionOr<size_t> Skip(size_t offset) override;
+  ExceptionOr<ByteArray> ReadExactly(std::size_t size);
+
+  Exception Close() override;
+
+private:
+  int fd_;
+};
+
+class BluetoothOutputStream : public OutputStream {
+public:
+  BluetoothOutputStream(int fd) { fd_ = fd; };
+
+  Exception Write(const ByteArray &data) override;
+  Exception Flush() override;
+  Exception Close() override;
+
+private:
+  int fd_;
+};
+
+class BluetoothSocket : public api::BluetoothSocket {
+public:
+  BluetoothSocket(std::string object, int fd) {
+    fd_ = fd;
+    object_ = object;
+    input_stream_ = BluetoothInputStream(fd_);
+    output_stream_ = BluetoothOutputStream(fd_);
+  }
+
+  InputStream &GetInputStream() override { return input_stream_; }
+  OutputStream &GetOutputStream() override { return output_stream_; }
+
+private:
+  int fd_;
+  std::string object_;
+  BluetoothInputStream input_stream_ = {-1};
+  BluetoothOutputStream output_stream_ = {-1};
+};
+} // namespace linux
+} // namespace nearby
+#endif