| /* |
| * Copyright (C) 2020 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 <AudioToolbox/AudioToolbox.h> |
| #include <CoreAudio/CoreAudioTypes.h> |
| #include <wtf/Forward.h> |
| #include <wtf/HashSet.h> |
| #include <wtf/Vector.h> |
| |
| namespace WebCore { |
| |
| class AudioSampleDataSource; |
| class AudioSampleBufferList; |
| class CAAudioStreamDescription; |
| |
| class AudioMediaStreamTrackRendererUnit { |
| public: |
| static AudioMediaStreamTrackRendererUnit& singleton(); |
| |
| AudioMediaStreamTrackRendererUnit() = default; |
| ~AudioMediaStreamTrackRendererUnit(); |
| |
| static OSStatus inputProc(void*, AudioUnitRenderActionFlags*, const AudioTimeStamp*, UInt32 inBusNumber, UInt32 numberOfFrames, AudioBufferList*); |
| |
| void start(); |
| void stop(); |
| |
| void addSource(Ref<AudioSampleDataSource>&&); |
| void removeSource(AudioSampleDataSource&); |
| |
| CAAudioStreamDescription* formatDescription(); |
| |
| private: |
| void createAudioUnitIfNeeded(); |
| OSStatus render(UInt32 sampleCount, AudioBufferList&, UInt32 inBusNumber, const AudioTimeStamp&, AudioUnitRenderActionFlags&); |
| |
| AudioComponentInstance m_remoteIOUnit { nullptr }; |
| std::unique_ptr<CAAudioStreamDescription> m_outputDescription; |
| HashSet<Ref<AudioSampleDataSource>> m_sources; |
| Vector<Ref<AudioSampleDataSource>> m_sourcesCopy; |
| Vector<Ref<AudioSampleDataSource>> m_renderSources; |
| bool m_shouldUpdateRenderSources { false }; |
| Lock m_sourcesLock; |
| bool m_isStarted { false }; |
| }; |
| |
| } |
| |
| #endif // ENABLE(MEDIA_STREAM) |