EncoderZlib/DecoderZlib for chromoting

remoting/base/encoder_zlib.h

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef REMOTING_BASE_ENCODER_ZLIB_H_
+#define REMOTING_BASE_ENCODER_ZLIB_H_
+
+#include "remoting/base/encoder.h"
+
+namespace remoting {
+
+class CompressorZlib;
+class UpdateStreamPacket;
+
+// EncoderZlib implements an Encoder using Zlib for compression.
+class EncoderZlib : public Encoder {
+ public:
+  EncoderZlib();
+  EncoderZlib(int packet_size);
+
+  virtual ~EncoderZlib() {}
+
+  virtual void Encode(scoped_refptr<CaptureData> capture_data,
+                      bool key_frame,
+                      DataAvailableCallback* data_available_callback);
+
+ private:
+  // Encode a single dirty rect using compressor.
+  void EncodeRect(CompressorZlib* compressor);
+
+  // Create a new HostMessage with the right flag and attributes. The message
+  // can be used immediately for output of encoding.
+  HostMessage* PrepareMessage(bool new_rect);
+
+  // Submit |message| to |callback_|.
+  void SubmitMessage(HostMessage* message);
+
+  scoped_refptr<CaptureData> capture_data_;
+  scoped_ptr<DataAvailableCallback> callback_;
+  size_t current_rect_;
+  int packet_size_;
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_BASE_ENCODER_ZLIB_H_