| // Copyright 2020 The Chromium Authors |
| // 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/functional/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; |
| |
| // This should not perform any memory allocations so that it can be called on |
| // audio rendering threads. Must call Reconfigure() first and can't be called |
| // concurrently with Reconfigure(). |
| virtual void AddAudio(const media::AudioBus& audio_bus) = 0; |
| |
| virtual bool IsSpeechRecognitionAvailable() = 0; |
| |
| virtual void SetOnReadyCallback(OnReadyCallback callback) = 0; |
| |
| // Must not be called concurrently with AddAudio(). |
| virtual void Reconfigure(const media::AudioParameters& audio_parameters) = 0; |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_BASE_SPEECH_RECOGNITION_CLIENT_H_ |