Support for Signal calls.

Merge in RedPhone

// FREEBIE

jni/webrtc/system_wrappers/source/file_impl.h

@@ -0,0 +1,70 @@
+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_SYSTEM_WRAPPERS_SOURCE_FILE_IMPL_H_
+#define WEBRTC_SYSTEM_WRAPPERS_SOURCE_FILE_IMPL_H_
+
+#include <stdio.h>
+
+#include "webrtc/system_wrappers/interface/file_wrapper.h"
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
+
+namespace webrtc {
+
+class RWLockWrapper;
+
+class FileWrapperImpl : public FileWrapper {
+ public:
+  FileWrapperImpl();
+  virtual ~FileWrapperImpl();
+
+  virtual int FileName(char* file_name_utf8,
+                       size_t size) const OVERRIDE;
+
+  virtual bool Open() const OVERRIDE;
+
+  virtual int OpenFile(const char* file_name_utf8,
+                       bool read_only,
+                       bool loop = false,
+                       bool text = false) OVERRIDE;
+
+  virtual int OpenFromFileHandle(FILE* handle,
+                                 bool manage_file,
+                                 bool read_only,
+                                 bool loop = false) OVERRIDE;
+
+  virtual int CloseFile() OVERRIDE;
+  virtual int SetMaxFileSize(size_t bytes) OVERRIDE;
+  virtual int Flush() OVERRIDE;
+
+  virtual int Read(void* buf, int length) OVERRIDE;
+  virtual bool Write(const void* buf, int length) OVERRIDE;
+  virtual int WriteText(const char* format, ...) OVERRIDE;
+  virtual int Rewind() OVERRIDE;
+
+ private:
+  int CloseFileImpl();
+  int FlushImpl();
+
+  scoped_ptr<RWLockWrapper> rw_lock_;
+
+  FILE* id_;
+  bool managed_file_handle_;
+  bool open_;
+  bool looping_;
+  bool read_only_;
+  size_t max_size_in_bytes_;  // -1 indicates file size limitation is off
+  size_t size_in_bytes_;
+  char file_name_utf8_[kMaxFileNameSize];
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_SYSTEM_WRAPPERS_SOURCE_FILE_IMPL_H_