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// 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_H_
#define REMOTING_BASE_ENCODER_H_
#include "base/basictypes.h"
#include "base/callback.h"
#include "media/base/data_buffer.h"
namespace media {
class DataBuffer;
}
namespace remoting {
class CaptureData;
class VideoPacket;
// A class to perform the task of encoding a continous stream of
// images.
// This class operates asynchronously to enable maximum throughput.
class Encoder {
public:
// DataAvailableCallback is called as blocks of data are made available
// from the encoder. Data made available by the encoder is in the form
// of HostMessage to reduce the amount of memory copies.
// The callback takes ownership of the HostMessage and is responsible for
// deleting it.
typedef base::Callback<void(VideoPacket*)> DataAvailableCallback;
virtual ~Encoder() {}
// Encode an image stored in |capture_data|.
//
// If |key_frame| is true, the encoder should not reference
// previous encode and encode the full frame.
//
// When encoded data is available, partial or full |data_available_callback|
// is called.
virtual void Encode(scoped_refptr<CaptureData> capture_data,
bool key_frame,
const DataAvailableCallback& data_available_callback) = 0;
};
} // namespace remoting
#endif // REMOTING_BASE_ENCODER_H_
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