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 #include "config.h" 32 #include "modules/webmidi/MIDIOutput.h" 33 34 #include "bindings/v8/ExceptionState.h" 35 #include "core/dom/ExceptionCode.h" 36 #include "modules/webmidi/MIDIAccess.h" 37 38 namespace WebCore { 39 40 PassRefPtr<MIDIOutput> MIDIOutput::create(MIDIAccess* access, unsigned portIndex, ScriptExecutionContext* context, const String& id, const String& manufacturer, const String& name, const String& version) 41 { 42 return adoptRef(new MIDIOutput(access, portIndex, context, id, manufacturer, name, version)); 43 } 44 45 MIDIOutput::MIDIOutput(MIDIAccess* access, unsigned portIndex, ScriptExecutionContext* context, const String& id, const String& manufacturer, const String& name, const String& version) 46 : MIDIPort(context, id, manufacturer, name, MIDIPortTypeOutput, version) 47 , m_access(access) 48 , m_portIndex(portIndex) 49 { 50 ScriptWrappable::init(this); 51 } 52 53 MIDIOutput::~MIDIOutput() 54 { 55 } 56 57 void MIDIOutput::send(Uint8Array* array, double timestamp, ExceptionState& es) 58 { 59 if (!array) 60 return; 61 62 const unsigned char* data = array->data(); 63 size_t length = array->length(); 64 65 // Filter out System Exclusive messages if we're not allowed. 66 // FIXME: implement more extensive filtering. 67 if (length > 0 && data[0] >= 0xf0 && !m_access->sysExEnabled()) { 68 es.throwDOMException(SecurityError); 69 return; 70 } 71 72 m_access->sendMIDIData(m_portIndex, data, length, timestamp); 73 } 74 75 void MIDIOutput::send(Vector<unsigned> unsignedData, double timestamp, ExceptionState& es) 76 { 77 RefPtr<Uint8Array> array = Uint8Array::create(unsignedData.size()); 78 79 for (size_t i = 0; i < unsignedData.size(); ++i) { 80 if (unsignedData[i] > 0xff) { 81 es.throwDOMException(InvalidStateError); 82 return; 83 } 84 unsigned char value = unsignedData[i] & 0xff; 85 array->set(i, value); 86 } 87 88 send(array.get(), timestamp, es); 89 } 90 91 void MIDIOutput::send(Uint8Array* data, ExceptionState& es) 92 { 93 send(data, 0, es); 94 } 95 96 void MIDIOutput::send(Vector<unsigned> unsignedData, ExceptionState& es) 97 { 98 send(unsignedData, 0, es); 99 } 100 101 } // namespace WebCore 102