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/*
* Copyright (C) 2013 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
#ifndef MIDIAccess_h
#define MIDIAccess_h
#include "bindings/core/v8/ActiveScriptWrappable.h"
#include "bindings/core/v8/ScriptPromise.h"
#include "core/dom/ContextLifecycleObserver.h"
#include "media/midi/midi_service.mojom-blink.h"
#include "modules/EventTargetModules.h"
#include "modules/webmidi/MIDIAccessInitializer.h"
#include "modules/webmidi/MIDIAccessor.h"
#include "modules/webmidi/MIDIAccessorClient.h"
#include "platform/heap/Handle.h"
#include "wtf/Vector.h"
#include <memory>
namespace blink {
class ExecutionContext;
class MIDIInput;
class MIDIInputMap;
class MIDIOutput;
class MIDIOutputMap;
class MIDIAccess final : public EventTargetWithInlineData,
public ActiveScriptWrappable<MIDIAccess>,
public ContextLifecycleObserver,
public MIDIAccessorClient {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(MIDIAccess);
USING_PRE_FINALIZER(MIDIAccess, dispose);
public:
static MIDIAccess* create(
std::unique_ptr<MIDIAccessor> accessor,
bool sysexEnabled,
const Vector<MIDIAccessInitializer::PortDescriptor>& ports,
ExecutionContext* executionContext) {
return new MIDIAccess(std::move(accessor), sysexEnabled, ports,
executionContext);
}
~MIDIAccess() override;
MIDIInputMap* inputs() const;
MIDIOutputMap* outputs() const;
EventListener* onstatechange();
void setOnstatechange(EventListener*);
bool sysexEnabled() const { return m_sysexEnabled; }
// EventTarget
const AtomicString& interfaceName() const override {
return EventTargetNames::MIDIAccess;
}
ExecutionContext* getExecutionContext() const override {
return ContextLifecycleObserver::getExecutionContext();
}
// ScriptWrappable
bool hasPendingActivity() const final;
// ContextLifecycleObserver
void contextDestroyed(ExecutionContext*) override;
// MIDIAccessorClient
void didAddInputPort(const String& id,
const String& manufacturer,
const String& name,
const String& version,
midi::mojom::PortState) override;
void didAddOutputPort(const String& id,
const String& manufacturer,
const String& name,
const String& version,
midi::mojom::PortState) override;
void didSetInputPortState(unsigned portIndex,
midi::mojom::PortState) override;
void didSetOutputPortState(unsigned portIndex,
midi::mojom::PortState) override;
void didStartSession(midi::mojom::Result) override {
// This method is for MIDIAccess initialization: MIDIAccessInitializer
// has the implementation.
NOTREACHED();
}
void didReceiveMIDIData(unsigned portIndex,
const unsigned char* data,
size_t length,
double timeStamp) override;
// |timeStampInMilliseconds| is in the same time coordinate system as
// performance.now().
void sendMIDIData(unsigned portIndex,
const unsigned char* data,
size_t length,
double timeStampInMilliseconds);
// Eager finalization needed to promptly release m_accessor. Otherwise
// its client back reference could end up being unsafely used during
// the lazy sweeping phase.
DECLARE_VIRTUAL_TRACE();
private:
MIDIAccess(std::unique_ptr<MIDIAccessor>,
bool sysexEnabled,
const Vector<MIDIAccessInitializer::PortDescriptor>&,
ExecutionContext*);
void dispose();
std::unique_ptr<MIDIAccessor> m_accessor;
bool m_sysexEnabled;
bool m_hasPendingActivity;
HeapVector<Member<MIDIInput>> m_inputs;
HeapVector<Member<MIDIOutput>> m_outputs;
};
} // namespace blink
#endif // MIDIAccess_h
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