1 files changed, 94 insertions, 0 deletions
diff --git a/Plugins/jingle/libjingle/talk/base/streamutils.h b/Plugins/jingle/libjingle/talk/base/streamutils.h
new file mode 100644
index 0000000..7bb07a3
--- /dev/null
+++ b/Plugins/jingle/libjingle/talk/base/streamutils.h
@@ -0,0 +1,94 @@
+/*
+ * libjingle
+ * Copyright 2004--2006, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TALK_APP_STREAMUTILS_H__
+#define TALK_APP_STREAMUTILS_H__
+
+#include "talk/base/sigslot.h"
+#include "talk/base/stream.h"
+
+///////////////////////////////////////////////////////////////////////////////
+// StreamRelay - acts as an intermediary between two asynchronous streams,
+//  reading from one stream and writing to the other, using a pre-specified
+//  amount of buffering in both directions.
+///////////////////////////////////////////////////////////////////////////////
+
+class StreamRelay : public sigslot::has_slots<> {
+public:
+  StreamRelay(talk_base::StreamInterface* s1, 
+              talk_base::StreamInterface* s2, size_t buffer_size);
+  virtual ~StreamRelay();
+
+  void Circulate(); // Simulate events to get things flowing
+  void Close();
+
+  sigslot::signal2<StreamRelay*, int> SignalClosed;
+
+private:
+  inline int Index(talk_base::StreamInterface* s) const 
+    { return (s == dir_[1].stream); }
+  inline int Complement(int index) const { return (1-index); }
+
+  bool Flow(int read_index, int* error);
+  void OnEvent(talk_base::StreamInterface* stream, int events, int error);
+
+  struct Direction {
+    talk_base::StreamInterface* stream;
+    char* buffer;
+    size_t data_len;
+  };
+  Direction dir_[2];
+  size_t buffer_size_;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// StreamCounter - counts the number of bytes which are transferred in either
+//  direction.
+///////////////////////////////////////////////////////////////////////////////
+
+class StreamCounter : public talk_base::StreamAdapterInterface {
+ public:
+  explicit StreamCounter(talk_base::StreamInterface* stream);
+
+  inline void ResetByteCount() { count_ = 0; }
+  inline size_t GetByteCount() const { return count_; }
+
+  sigslot::signal1<size_t> SignalUpdateByteCount;
+
+  // StreamAdapterInterface
+  virtual talk_base::StreamResult Read(void* buffer, size_t buffer_len,
+                                       size_t* read, int* error);
+  virtual talk_base::StreamResult Write(const void* data, size_t data_len,
+                                        size_t* written, int* error);
+
+ private:
+  size_t count_;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+#endif  // TALK_APP_STREAMUTILS_H__