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// Copyright 2018 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_MEDIA_STREAM_MEDIA_STREAM_AUDIO_SINK_H_
#define COBALT_MEDIA_STREAM_MEDIA_STREAM_AUDIO_SINK_H_
#include "cobalt/media/base/audio_bus.h"
#include "cobalt/media_stream/audio_parameters.h"
#include "cobalt/media_stream/media_stream_source.h"
#include "cobalt/media_stream/media_stream_track.h"
namespace cobalt {
namespace media_stream {
// Abstract base class that is used to represent a sink for the audio data.
// Note: users of this class will call OnSetFormat is before OnData.
class MediaStreamAudioSink {
public:
typedef media::AudioBus AudioBus;
MediaStreamAudioSink() = default;
// These are called on the same thread.
virtual void OnData(const AudioBus& audio_bus,
base::TimeTicks reference_time) = 0;
virtual void OnSetFormat(const media_stream::AudioParameters& params) = 0;
virtual void OnReadyStateChanged(
media_stream::MediaStreamTrack::ReadyState new_state) {
}
private:
MediaStreamAudioSink(const MediaStreamAudioSink&) = delete;
MediaStreamAudioSink& operator=(const MediaStreamAudioSink&) = delete;
};
} // namespace media_stream
} // namespace cobalt
#endif // COBALT_MEDIA_STREAM_MEDIA_STREAM_AUDIO_SINK_H_