| /* |
| * Copyright (C) 2020-2021 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #if ENABLE(MEDIA_STREAM) |
| |
| #include "AudioMediaStreamTrackRendererInternalUnit.h" |
| #include "BaseAudioMediaStreamTrackRendererUnit.h" |
| #include <wtf/HashSet.h> |
| #include <wtf/Lock.h> |
| #include <wtf/UniqueRef.h> |
| #include <wtf/Vector.h> |
| #include <wtf/WeakHashSet.h> |
| |
| namespace WebCore { |
| |
| class AudioSampleDataSource; |
| class AudioSampleBufferList; |
| class CAAudioStreamDescription; |
| class AudioMediaStreamTrackRendererInternalUnit; |
| |
| class AudioMediaStreamTrackRendererUnit : public BaseAudioMediaStreamTrackRendererUnit { |
| public: |
| WEBCORE_EXPORT static AudioMediaStreamTrackRendererUnit& singleton(); |
| |
| AudioMediaStreamTrackRendererUnit(); |
| ~AudioMediaStreamTrackRendererUnit(); |
| |
| using CreateInternalUnitFunction = Function<UniqueRef<AudioMediaStreamTrackRendererInternalUnit>(AudioMediaStreamTrackRendererInternalUnit::RenderCallback&&, AudioMediaStreamTrackRendererInternalUnit::ResetCallback&&)>; |
| WEBCORE_EXPORT static void setCreateInternalUnitFunction(CreateInternalUnitFunction&&); |
| |
| WEBCORE_EXPORT void render(size_t sampleCount, AudioBufferList&, uint64_t sampleTime, double hostTime, AudioUnitRenderActionFlags&); |
| void reset(); |
| |
| void retrieveFormatDescription(CompletionHandler<void(const CAAudioStreamDescription*)>&&); |
| |
| // BaseAudioMediaStreamTrackRendererUnit |
| void setAudioOutputDevice(const String&) final; |
| void addSource(Ref<AudioSampleDataSource>&&) final; |
| void removeSource(AudioSampleDataSource&) final; |
| void addResetObserver(ResetObserver& observer) final { m_resetObservers.add(observer); } |
| |
| private: |
| void start(); |
| void stop(); |
| |
| void createAudioUnitIfNeeded(); |
| void updateRenderSourcesIfNecessary(); |
| |
| HashSet<Ref<AudioSampleDataSource>> m_sources; |
| Vector<Ref<AudioSampleDataSource>> m_pendingRenderSources WTF_GUARDED_BY_LOCK(m_pendingRenderSourcesLock); |
| Vector<Ref<AudioSampleDataSource>> m_renderSources; |
| bool m_hasPendingRenderSources WTF_GUARDED_BY_LOCK(m_pendingRenderSourcesLock) { false }; |
| Lock m_pendingRenderSourcesLock; |
| UniqueRef<AudioMediaStreamTrackRendererInternalUnit> m_internalUnit; |
| WeakHashSet<ResetObserver> m_resetObservers; |
| }; |
| |
| } |
| |
| #endif // ENABLE(MEDIA_STREAM) |