| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * Copyright (C) 2016-2020 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 |
| |
| #include "BaseAudioContext.h" |
| #include "WebKitAudioListener.h" |
| |
| namespace WebCore { |
| |
| class AudioBuffer; |
| class Document; |
| class HTMLMediaElement; |
| class MediaElementAudioSourceNode; |
| class MediaStream; |
| class MediaStreamAudioDestinationNode; |
| class MediaStreamAudioSourceNode; |
| class PeriodicWave; |
| class WebKitAudioBufferSourceNode; |
| class WebKitAudioPannerNode; |
| class WebKitDynamicsCompressorNode; |
| class WebKitOscillatorNode; |
| |
| // AudioContext is the cornerstone of the web audio API and all AudioNodes are created from it. |
| // For thread safety between the audio thread and the main thread, it has a rendering graph locking mechanism. |
| |
| class WebKitAudioContext |
| : public BaseAudioContext |
| { |
| WTF_MAKE_ISO_ALLOCATED(WebKitAudioContext); |
| public: |
| // Create an WebKitAudioContext for rendering to the audio hardware. |
| static ExceptionOr<Ref<WebKitAudioContext>> create(Document&); |
| |
| void close(DOMPromiseDeferred<void>&&); |
| |
| WebKitAudioListener& listener() { return downcast<WebKitAudioListener>(BaseAudioContext::listener()); } |
| |
| // The AudioNode create methods are called on the main thread (from JavaScript). |
| #if ENABLE(VIDEO) |
| ExceptionOr<Ref<MediaElementAudioSourceNode>> createMediaElementSource(HTMLMediaElement&); |
| #endif |
| #if ENABLE(MEDIA_STREAM) |
| ExceptionOr<Ref<MediaStreamAudioSourceNode>> createMediaStreamSource(MediaStream&); |
| ExceptionOr<Ref<MediaStreamAudioDestinationNode>> createMediaStreamDestination(); |
| #endif |
| ExceptionOr<Ref<WebKitAudioPannerNode>> createWebKitPanner(); |
| ExceptionOr<Ref<WebKitOscillatorNode>> createWebKitOscillator(); |
| ExceptionOr<Ref<PeriodicWave>> createPeriodicWave(Float32Array& real, Float32Array& imaginary); |
| ExceptionOr<Ref<WebKitAudioBufferSourceNode>> createWebKitBufferSource(); |
| ExceptionOr<Ref<WebKitDynamicsCompressorNode>> createWebKitDynamicsCompressor(); |
| ExceptionOr<Ref<AudioBuffer>> createLegacyBuffer(ArrayBuffer&, bool mixToMono); |
| |
| protected: |
| explicit WebKitAudioContext(Document&); |
| WebKitAudioContext(Document&, AudioBuffer* renderTarget); |
| |
| private: |
| // ActiveDOMObject API. |
| const char* activeDOMObjectName() const override; |
| |
| bool isWebKitAudioContext() const final { return true; } |
| }; |
| |
| } // WebCore |
| |
| SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::WebKitAudioContext) |
| static bool isType(const WebCore::BaseAudioContext& context) { return context.isWebKitAudioContext(); } |
| SPECIALIZE_TYPE_TRAITS_END() |