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31 #ifndef WebMIDIAccessorClient_h
32 #define WebMIDIAccessorClient_h
34 #include "WebString.h"
38 class WebMIDIAccessorClient {
40 // didAddInputPort() and didAddOutputPort() can be called before and after
41 // didStartSession() is called. But |id| should be unique in each function.
42 virtual void didAddInputPort(const WebString& id, const WebString& manufacturer, const WebString& name, const WebString& version, bool isActive) = 0;
43 virtual void didAddOutputPort(const WebString& id, const WebString& manufacturer, const WebString& name, const WebString& version, bool isActive) = 0;
44 // didSetInputPortState() and didSetOutputPortState() should not be called
45 // until didStartSession() is called.
46 virtual void didSetInputPortState(unsigned portIndex, bool isActive) = 0;
47 virtual void didSetOutputPortState(unsigned portIndex, bool isActive) = 0;
49 virtual void didStartSession(bool success, const WebString& error, const WebString& message) = 0;
51 // |timeStamp| is in milliseconds according to the Web MIDI API.
52 virtual void didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) = 0;
55 virtual ~WebMIDIAccessorClient() { }
60 #endif // WebMIDIAccessorClient_h