| /* |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "modules/webmidi/MIDIInput.h" |
| |
| #include "modules/webmidi/MIDIAccess.h" |
| #include "modules/webmidi/MIDIMessageEvent.h" |
| #include "platform/heap/Handle.h" |
| |
| namespace blink { |
| |
| using midi::mojom::PortState; |
| |
| MIDIInput* MIDIInput::create(MIDIAccess* access, |
| const String& id, |
| const String& manufacturer, |
| const String& name, |
| const String& version, |
| PortState state) { |
| DCHECK(access); |
| MIDIInput* input = |
| new MIDIInput(access, id, manufacturer, name, version, state); |
| input->suspendIfNeeded(); |
| return input; |
| } |
| |
| MIDIInput::MIDIInput(MIDIAccess* access, |
| const String& id, |
| const String& manufacturer, |
| const String& name, |
| const String& version, |
| PortState state) |
| : MIDIPort(access, id, manufacturer, name, TypeInput, version, state) {} |
| |
| EventListener* MIDIInput::onmidimessage() { |
| return getAttributeEventListener(EventTypeNames::midimessage); |
| } |
| |
| void MIDIInput::setOnmidimessage(EventListener* listener) { |
| // Implicit open. It does nothing if the port is already opened. |
| // See http://www.w3.org/TR/webmidi/#widl-MIDIPort-open-Promise-MIDIPort |
| open(); |
| |
| setAttributeEventListener(EventTypeNames::midimessage, listener); |
| } |
| |
| void MIDIInput::addedEventListener( |
| const AtomicString& eventType, |
| RegisteredEventListener& registeredListener) { |
| MIDIPort::addedEventListener(eventType, registeredListener); |
| if (eventType == EventTypeNames::midimessage) { |
| // Implicit open. See setOnmidimessage(). |
| open(); |
| } |
| } |
| |
| void MIDIInput::didReceiveMIDIData(unsigned portIndex, |
| const unsigned char* data, |
| size_t length, |
| double timeStamp) { |
| DCHECK(isMainThread()); |
| |
| if (!length) |
| return; |
| |
| if (getConnection() != ConnectionStateOpen) |
| return; |
| |
| // Drop sysex message here when the client does not request it. Note that this |
| // is not a security check but an automatic filtering for clients that do not |
| // want sysex message. Also note that sysex message will never be sent unless |
| // the current process has an explicit permission to handle sysex message. |
| if (data[0] == 0xf0 && !midiAccess()->sysexEnabled()) |
| return; |
| DOMUint8Array* array = DOMUint8Array::create(data, length); |
| dispatchEvent(MIDIMessageEvent::create(timeStamp, array)); |
| } |
| |
| DEFINE_TRACE(MIDIInput) { |
| MIDIPort::trace(visitor); |
| } |
| |
| } // namespace blink |