1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef MIDIAccess_h 32 #define MIDIAccess_h 33 34 #include "bindings/core/v8/ScriptPromise.h" 35 #include "core/dom/ActiveDOMObject.h" 36 #include "modules/EventTargetModules.h" 37 #include "modules/webmidi/MIDIAccessInitializer.h" 38 #include "modules/webmidi/MIDIAccessor.h" 39 #include "modules/webmidi/MIDIAccessorClient.h" 40 #include "platform/heap/Handle.h" 41 #include "wtf/Vector.h" 42 43 namespace blink { 44 45 class ExecutionContext; 46 class MIDIInput; 47 class MIDIInputMap; 48 class MIDIOutput; 49 class MIDIOutputMap; 50 51 class MIDIAccess FINAL : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<MIDIAccess>, public ActiveDOMObject, public EventTargetWithInlineData, public MIDIAccessorClient { 52 DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<MIDIAccess>); 53 DEFINE_WRAPPERTYPEINFO(); 54 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MIDIAccess); 55 public: 56 static MIDIAccess* create(PassOwnPtr<MIDIAccessor> accessor, bool sysexEnabled, const Vector<MIDIAccessInitializer::PortDescriptor>& ports, ExecutionContext* executionContext) 57 { 58 MIDIAccess* access = adoptRefCountedGarbageCollectedWillBeNoop(new MIDIAccess(accessor, sysexEnabled, ports, executionContext)); 59 access->suspendIfNeeded(); 60 return access; 61 } 62 virtual ~MIDIAccess(); 63 64 MIDIInputMap* inputs() const; 65 MIDIOutputMap* outputs() const; 66 67 DEFINE_ATTRIBUTE_EVENT_LISTENER(connect); 68 DEFINE_ATTRIBUTE_EVENT_LISTENER(disconnect); 69 70 bool sysexEnabled() const { return m_sysexEnabled; } 71 72 // EventTarget 73 virtual const AtomicString& interfaceName() const OVERRIDE { return EventTargetNames::MIDIAccess; } 74 virtual ExecutionContext* executionContext() const OVERRIDE { return ActiveDOMObject::executionContext(); } 75 76 // ActiveDOMObject 77 virtual void stop() OVERRIDE; 78 79 // MIDIAccessorClient 80 virtual void didAddInputPort(const String& id, const String& manufacturer, const String& name, const String& version) OVERRIDE; 81 virtual void didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version) OVERRIDE; 82 virtual void didStartSession(bool success, const String& error, const String& message) OVERRIDE 83 { 84 // This method is for MIDIAccess initialization: MIDIAccessInitializer 85 // has the implementation. 86 ASSERT_NOT_REACHED(); 87 } 88 virtual void didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) OVERRIDE; 89 90 // |timeStampInMilliseconds| is in the same time coordinate system as performance.now(). 91 void sendMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStampInMilliseconds); 92 93 virtual void trace(Visitor*) OVERRIDE; 94 95 private: 96 MIDIAccess(PassOwnPtr<MIDIAccessor>, bool sysexEnabled, const Vector<MIDIAccessInitializer::PortDescriptor>&, ExecutionContext*); 97 98 OwnPtr<MIDIAccessor> m_accessor; 99 bool m_sysexEnabled; 100 HeapVector<Member<MIDIInput> > m_inputs; 101 HeapVector<Member<MIDIOutput> > m_outputs; 102 }; 103 104 } // namespace blink 105 106 #endif // MIDIAccess_h 107