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// Copyright (c) 2012 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_CODEC_AUDIO_ENCODER_OPUS_H_
#define REMOTING_CODEC_AUDIO_ENCODER_OPUS_H_
#include "remoting/codec/audio_encoder.h"
#include "remoting/proto/audio.pb.h"
struct OpusEncoder;
namespace media {
class AudioBus;
class MultiChannelResampler;
} // namespace media
namespace remoting {
class AudioPacket;
class AudioEncoderOpus : public AudioEncoder {
public:
AudioEncoderOpus();
virtual ~AudioEncoderOpus();
// AudioEncoder interface.
virtual scoped_ptr<AudioPacket> Encode(
scoped_ptr<AudioPacket> packet) OVERRIDE;
private:
void InitEncoder();
void DestroyEncoder();
bool ResetForPacket(AudioPacket* packet);
void FetchBytesToResample(int resampler_frame_delay,
media::AudioBus* audio_bus);
int sampling_rate_;
AudioPacket::Channels channels_;
OpusEncoder* encoder_;
int frame_size_;
scoped_ptr<media::MultiChannelResampler> resampler_;
scoped_ptr<char[]> resample_buffer_;
scoped_ptr<media::AudioBus> resampler_bus_;
// Used to pass packet to the FetchBytesToResampler() callback.
const char* resampling_data_;
int resampling_data_size_;
int resampling_data_pos_;
// Left-over unencoded samples from the previous AudioPacket.
scoped_ptr<int16[]> leftover_buffer_;
int leftover_buffer_size_;
int leftover_samples_;
DISALLOW_COPY_AND_ASSIGN(AudioEncoderOpus);
};
} // namespace remoting
#endif // REMOTING_CODEC_AUDIO_ENCODER_OPUS_H_
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