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/*
* Copyright (C) 2011, Google 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.
*/
#include "third_party/blink/renderer/modules/webaudio/media_element_audio_source_node.h"
#include <memory>
#include "third_party/blink/public/platform/task_type.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_media_element_audio_source_options.h"
#include "third_party/blink/renderer/core/frame/deprecation/deprecation.h"
#include "third_party/blink/renderer/core/html/media/html_media_element.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/modules/webaudio/audio_context.h"
#include "third_party/blink/renderer/modules/webaudio/audio_graph_tracer.h"
#include "third_party/blink/renderer/modules/webaudio/audio_node_output.h"
#include "third_party/blink/renderer/platform/audio/audio_utilities.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
namespace blink {
MediaElementAudioSourceNode::MediaElementAudioSourceNode(
AudioContext& context,
HTMLMediaElement& media_element)
: AudioNode(context),
ActiveScriptWrappable<MediaElementAudioSourceNode>({}),
media_element_(&media_element) {
SetHandler(MediaElementAudioSourceHandler::Create(*this, media_element));
}
MediaElementAudioSourceNode* MediaElementAudioSourceNode::Create(
AudioContext& context,
HTMLMediaElement& media_element,
ExceptionState& exception_state) {
DCHECK(IsMainThread());
// First check if this media element already has a source node.
if (media_element.AudioSourceNode()) {
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
"HTMLMediaElement already connected "
"previously to a different "
"MediaElementSourceNode.");
return nullptr;
}
MediaElementAudioSourceNode* node =
MakeGarbageCollected<MediaElementAudioSourceNode>(context, media_element);
if (node) {
media_element.SetAudioSourceNode(node);
// context keeps reference until node is disconnected
context.NotifySourceNodeStartedProcessing(node);
if (!context.HasRealtimeConstraint()) {
Deprecation::CountDeprecation(
node->GetExecutionContext(),
WebFeature::kMediaElementSourceOnOfflineContext);
}
}
return node;
}
MediaElementAudioSourceNode* MediaElementAudioSourceNode::Create(
AudioContext* context,
const MediaElementAudioSourceOptions* options,
ExceptionState& exception_state) {
return Create(*context, *options->mediaElement(), exception_state);
}
MediaElementAudioSourceHandler&
MediaElementAudioSourceNode::GetMediaElementAudioSourceHandler() const {
return static_cast<MediaElementAudioSourceHandler&>(Handler());
}
HTMLMediaElement* MediaElementAudioSourceNode::mediaElement() const {
return media_element_.Get();
}
void MediaElementAudioSourceNode::ConnectToDestinationReady() {
media_element_->ConnectToDestinationReady();
}
void MediaElementAudioSourceNode::SetFormat(uint32_t number_of_channels,
float sample_rate) {
GetMediaElementAudioSourceHandler().SetFormat(number_of_channels,
sample_rate);
}
void MediaElementAudioSourceNode::lock() {
GetMediaElementAudioSourceHandler().lock();
}
void MediaElementAudioSourceNode::unlock() {
GetMediaElementAudioSourceHandler().unlock();
}
void MediaElementAudioSourceNode::ReportDidCreate() {
GraphTracer().DidCreateAudioNode(this);
}
void MediaElementAudioSourceNode::ReportWillBeDestroyed() {
GraphTracer().WillDestroyAudioNode(this);
}
bool MediaElementAudioSourceNode::HasPendingActivity() const {
// The node stays alive as long as the context is running.
return context()->ContextState() == V8AudioContextState::Enum::kRunning;
}
void MediaElementAudioSourceNode::Trace(Visitor* visitor) const {
visitor->Trace(media_element_);
AudioSourceProviderClient::Trace(visitor);
AudioNode::Trace(visitor);
}
} // namespace blink
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