89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
/*
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* Copyright (C) 2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(MEDIA_STREAM)
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#include "RealtimeMediaSource.h"
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#include "SpeechRecognitionConnectionClientIdentifier.h"
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#include <wtf/Lock.h>
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#if PLATFORM(COCOA)
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#include "AudioSampleDataSource.h"
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#endif
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namespace WTF {
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class MediaTime;
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}
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namespace WebCore {
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class AudioStreamDescription;
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class PlatformAudioData;
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class SpeechRecognitionUpdate;
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enum class SpeechRecognitionUpdateType;
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class SpeechRecognitionCaptureSourceImpl
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: public RealtimeMediaSource::Observer
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, public RealtimeMediaSource::AudioSampleObserver {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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using DataCallback = Function<void(const WTF::MediaTime&, const PlatformAudioData&, const AudioStreamDescription&, size_t)>;
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using StateUpdateCallback = Function<void(const SpeechRecognitionUpdate&)>;
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SpeechRecognitionCaptureSourceImpl(SpeechRecognitionConnectionClientIdentifier, DataCallback&&, StateUpdateCallback&&, Ref<RealtimeMediaSource>&&);
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~SpeechRecognitionCaptureSourceImpl();
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void mute();
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private:
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// RealtimeMediaSource::AudioSampleObserver
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void audioSamplesAvailable(const MediaTime&, const PlatformAudioData&, const AudioStreamDescription&, size_t) final;
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#if PLATFORM(COCOA)
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bool updateDataSource(const CAAudioStreamDescription&);
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void pullSamplesAndCallDataCallback(const MediaTime&, const CAAudioStreamDescription&, size_t sampleCount);
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#endif
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// RealtimeMediaSource::Observer
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void sourceStarted() final;
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void sourceStopped() final;
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void sourceMutedChanged() final;
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SpeechRecognitionConnectionClientIdentifier m_clientIdentifier;
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DataCallback m_dataCallback;
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StateUpdateCallback m_stateUpdateCallback;
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Ref<RealtimeMediaSource> m_source;
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#if PLATFORM(COCOA)
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RefPtr<AudioSampleDataSource> m_dataSource WTF_GUARDED_BY_LOCK(m_dataSourceLock);
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Lock m_dataSourceLock;
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#endif
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};
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} // namespace WebCore
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#endif
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