1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MIDIAccessInitializer_h 6 #define MIDIAccessInitializer_h 7 8 #include "bindings/core/v8/ScriptPromise.h" 9 #include "bindings/core/v8/ScriptPromiseResolver.h" 10 #include "modules/webmidi/MIDIAccessor.h" 11 #include "modules/webmidi/MIDIAccessorClient.h" 12 #include "modules/webmidi/MIDIPort.h" 13 #include "wtf/OwnPtr.h" 14 #include "wtf/Vector.h" 15 16 namespace blink { 17 18 class MIDIAccess; 19 class MIDIOptions; 20 class Navigator; 21 class ScriptState; 22 23 class MIDIAccessInitializer : public ScriptPromiseResolver, public MIDIAccessorClient { 24 public: 25 struct PortDescriptor { 26 String id; 27 String manufacturer; 28 String name; 29 MIDIPort::MIDIPortTypeCode type; 30 String version; 31 PortDescriptorPortDescriptor32 PortDescriptor(const String& id, const String& manufacturer, const String& name, MIDIPort::MIDIPortTypeCode type, const String& version) 33 : id(id) 34 , manufacturer(manufacturer) 35 , name(name) 36 , type(type) 37 , version(version) { } 38 }; 39 start(ScriptState * scriptState,const MIDIOptions & options)40 static ScriptPromise start(ScriptState* scriptState, const MIDIOptions& options) 41 { 42 RefPtr<MIDIAccessInitializer> p = adoptRef(new MIDIAccessInitializer(scriptState, options)); 43 p->keepAliveWhilePending(); 44 p->suspendIfNeeded(); 45 return p->start(); 46 } 47 48 virtual ~MIDIAccessInitializer(); 49 50 // MIDIAccessorClient 51 virtual void didAddInputPort(const String& id, const String& manufacturer, const String& name, const String& version) OVERRIDE; 52 virtual void didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version) OVERRIDE; 53 virtual void didStartSession(bool success, const String& error, const String& message) OVERRIDE; didReceiveMIDIData(unsigned portIndex,const unsigned char * data,size_t length,double timeStamp)54 virtual void didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) OVERRIDE { } 55 56 void resolveSysexPermission(bool allowed); 57 SecurityOrigin* securityOrigin() const; 58 59 private: 60 ScriptPromise start(); 61 62 MIDIAccessInitializer(ScriptState*, const MIDIOptions&); 63 64 ExecutionContext* executionContext() const; 65 66 OwnPtr<MIDIAccessor> m_accessor; 67 bool m_requestSysex; 68 Vector<PortDescriptor> m_portDescriptors; 69 }; 70 71 } // namespace blink 72 73 74 #endif // MIDIAccessInitializer_h 75