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common/rdr/FdOutStream.h

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+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2011 Pierre Ossman for Cendio AB
+ * 
+ * This 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 software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+//
+// FdOutStream streams to a file descriptor.
+//
+
+#ifndef __RDR_FDOUTSTREAM_H__
+#define __RDR_FDOUTSTREAM_H__
+
+#include <sys/time.h>
+
+#include <rdr/OutStream.h>
+
+namespace rdr {
+
+  class FdOutStream : public OutStream {
+
+  public:
+
+    FdOutStream(int fd, bool blocking=true, int timeoutms=-1, int bufSize=0);
+    virtual ~FdOutStream();
+
+    void setTimeout(int timeoutms);
+    void setBlocking(bool blocking);
+    int getFd() { return fd; }
+
+    void flush();
+    int length();
+
+    int bufferUsage();
+
+    unsigned getIdleTime();
+
+  private:
+    int overrun(int itemSize, int nItems);
+    int writeWithTimeout(const void* data, int length, int timeoutms);
+    int fd;
+    bool blocking;
+    int timeoutms;
+    int bufSize;
+    int offset;
+    U8* start;
+    U8* sentUpTo;
+    struct timeval lastWrite;
+  };
+
+}
+
+#endif