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/*
* 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 "config.h"
#include "modules/webmidi/MIDIInput.h"
#include "modules/webmidi/MIDIAccess.h"
#include "modules/webmidi/MIDIMessageEvent.h"
namespace WebCore {
PassRefPtr<MIDIInput> MIDIInput::create(MIDIAccess* access, ExecutionContext* context, const String& id, const String& manufacturer, const String& name, const String& version)
{
ASSERT(access);
RefPtr<MIDIInput> input = adoptRef(new MIDIInput(access, context, id, manufacturer, name, version));
input->suspendIfNeeded();
return input.release();
}
MIDIInput::MIDIInput(MIDIAccess* access, ExecutionContext* context, const String& id, const String& manufacturer, const String& name, const String& version)
: MIDIPort(context, id, manufacturer, name, MIDIPortTypeInput, version)
, m_access(access)
{
ScriptWrappable::init(this);
}
void MIDIInput::didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)
{
ASSERT(isMainThread());
if (!length)
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 && !m_access->sysExEnabled())
return;
RefPtr<Uint8Array> array = Uint8Array::create(data, length);
dispatchEvent(MIDIMessageEvent::create(timeStamp, array));
}
} // namespace WebCore
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