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/v8/ScriptWrappable.h" 35 #include "core/dom/ActiveDOMObject.h" 36 #include "core/events/EventTarget.h" 37 #include "modules/webmidi/MIDIAccessor.h" 38 #include "modules/webmidi/MIDIAccessorClient.h" 39 #include "modules/webmidi/MIDIInput.h" 40 #include "modules/webmidi/MIDIOutput.h" 41 #include "wtf/RefCounted.h" 42 #include "wtf/RefPtr.h" 43 #include "wtf/Vector.h" 44 45 namespace WebCore { 46 47 class ExecutionContext; 48 class MIDIAccessPromise; 49 50 class MIDIAccess : public RefCounted<MIDIAccess>, public ScriptWrappable, public ActiveDOMObject, public EventTargetWithInlineData, public MIDIAccessorClient { 51 REFCOUNTED_EVENT_TARGET(MIDIAccess); 52 public: 53 virtual ~MIDIAccess(); 54 static PassRefPtr<MIDIAccess> create(ExecutionContext*, MIDIAccessPromise*); 55 inputs()56 MIDIInputVector inputs() const { return m_inputs; } outputs()57 MIDIOutputVector outputs() const { return m_outputs; } 58 59 DEFINE_ATTRIBUTE_EVENT_LISTENER(connect); 60 DEFINE_ATTRIBUTE_EVENT_LISTENER(disconnect); 61 62 void setSysExEnabled(bool); sysExEnabled()63 bool sysExEnabled() const { return m_sysExEnabled; } 64 65 // EventTarget interfaceName()66 virtual const AtomicString& interfaceName() const OVERRIDE { return EventTargetNames::MIDIAccess; } executionContext()67 virtual ExecutionContext* executionContext() const OVERRIDE { return ActiveDOMObject::executionContext(); } 68 69 // ActiveDOMObject 70 virtual void stop(); 71 72 // MIDIAccessorClient 73 virtual void didAddInputPort(const String& id, const String& manufacturer, const String& name, const String& version) OVERRIDE; 74 virtual void didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version) OVERRIDE; 75 virtual void didStartSession(bool success) OVERRIDE; 76 virtual void didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) OVERRIDE; 77 78 // |timeStampInMilliseconds| is in the same time coordinate system as performance.now(). 79 void sendMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStampInMilliseconds); 80 81 private: 82 MIDIAccess(ExecutionContext*, MIDIAccessPromise*); 83 84 void startRequest(); 85 virtual void permissionDenied(); 86 87 MIDIInputVector m_inputs; 88 MIDIOutputVector m_outputs; 89 MIDIAccessPromise* m_promise; 90 91 OwnPtr<MIDIAccessor> m_accessor; 92 bool m_hasAccess; 93 bool m_sysExEnabled; 94 bool m_requesting; 95 }; 96 97 } // namespace WebCore 98 99 #endif // MIDIAccess_h 100