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// Copyright 2020 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 MEDIA_BASE_SPEECH_RECOGNITION_CLIENT_H_
#define MEDIA_BASE_SPEECH_RECOGNITION_CLIENT_H_
#include <memory>
#include "base/callback.h"
#include "media/base/audio_buffer.h"
#include "media/base/audio_bus.h"
#include "media/base/media_export.h"
namespace media {
// The interface for the speech recognition client used to transcribe audio into
// captions.
class MEDIA_EXPORT SpeechRecognitionClient {
public:
using OnReadyCallback = base::OnceCallback<void()>;
virtual ~SpeechRecognitionClient() = default;
virtual void AddAudio(scoped_refptr<AudioBuffer> buffer) = 0;
virtual void AddAudio(std::unique_ptr<media::AudioBus> audio_bus,
int sample_rate,
media::ChannelLayout channel_layout) = 0;
virtual bool IsSpeechRecognitionAvailable() = 0;
virtual void SetOnReadyCallback(OnReadyCallback callback) = 0;
};
} // namespace media
#endif // MEDIA_BASE_SPEECH_RECOGNITION_CLIENT_H_
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