Web MIDI: make MidiManagerMac notify device connections

content/renderer/media/midi_message_filter.cc

Index: content/renderer/media/midi_message_filter.cc
diff --git a/content/renderer/media/midi_message_filter.cc b/content/renderer/media/midi_message_filter.cc
index 982281f72d60ef5af1058fb7dccd7fa7377a4e1e..65426a5a7e01eab3bf60d48e4c81a83b76326db8 100644
--- a/content/renderer/media/midi_message_filter.cc
+++ b/content/renderer/media/midi_message_filter.cc
@@ -116,6 +116,8 @@ bool MidiMessageFilter::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(MidiMsg_SessionStarted, OnSessionStarted)
     IPC_MESSAGE_HANDLER(MidiMsg_AddInputPort, OnAddInputPort)
     IPC_MESSAGE_HANDLER(MidiMsg_AddOutputPort, OnAddOutputPort)
+    IPC_MESSAGE_HANDLER(MidiMsg_SetInputPortState, OnSetInputPortState)
+    IPC_MESSAGE_HANDLER(MidiMsg_SetOutputPortState, OnSetOutputPortState)
     IPC_MESSAGE_HANDLER(MidiMsg_DataReceived, OnDataReceived)
     IPC_MESSAGE_HANDLER(MidiMsg_AcknowledgeSentData, OnAcknowledgeSentData)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -163,6 +165,22 @@ void MidiMessageFilter::OnAddOutputPort(media::MidiPortInfo info) {
       base::Bind(&MidiMessageFilter::HandleAddOutputPort, this, info));
 }
 
+void MidiMessageFilter::OnSetInputPortState(uint32 port, bool connected) {
+  DCHECK(io_message_loop_->BelongsToCurrentThread());
+  main_message_loop_->PostTask(
+      FROM_HERE,
+      base::Bind(&MidiMessageFilter::HandleSetInputPortState,
+                 this, port, connected));
+}
+
+void MidiMessageFilter::OnSetOutputPortState(uint32 port, bool connected) {
+  DCHECK(io_message_loop_->BelongsToCurrentThread());
+  main_message_loop_->PostTask(
+      FROM_HERE,
+      base::Bind(&MidiMessageFilter::HandleSetOutputPortState,
+                 this, port, connected));
+}
+
 void MidiMessageFilter::OnDataReceived(uint32 port,
                                        const std::vector<uint8>& data,
                                        double timestamp) {
@@ -265,4 +283,16 @@ void MidiMessageFilter::HandleAckknowledgeSentData(size_t bytes_sent) {
     unacknowledged_bytes_sent_ -= bytes_sent;
 }
 
+void MidiMessageFilter::HandleSetInputPortState(uint32 port, bool connected) {
+  DCHECK(main_message_loop_->BelongsToCurrentThread());
+  inputs_[port].connected = connected;
+  // TODO(toyoshim): Notify to all clients.
+}
+
+void MidiMessageFilter::HandleSetOutputPortState(uint32 port, bool connected) {
+  DCHECK(main_message_loop_->BelongsToCurrentThread());
+  outputs_[port].connected = connected;
+  // TODO(toyoshim): Notify to all clients.
+}
+
 }  // namespace content