blob: e123c7fad26ce5a0bd541e8e740d6fc2efe42128 [file] [log] [blame]
/*
* 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 "third_party/blink/renderer/modules/webmidi/midi_access.h"
#include <memory>
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/loader/document_load_timing.h"
#include "third_party/blink/renderer/core/loader/document_loader.h"
#include "third_party/blink/renderer/modules/webmidi/midi_access_initializer.h"
#include "third_party/blink/renderer/modules/webmidi/midi_connection_event.h"
#include "third_party/blink/renderer/modules/webmidi/midi_input.h"
#include "third_party/blink/renderer/modules/webmidi/midi_input_map.h"
#include "third_party/blink/renderer/modules/webmidi/midi_output.h"
#include "third_party/blink/renderer/modules/webmidi/midi_output_map.h"
#include "third_party/blink/renderer/modules/webmidi/midi_port.h"
#include "third_party/blink/renderer/platform/async_method_runner.h"
namespace blink {
namespace {
using midi::mojom::PortState;
// Since "open" status is separately managed per MIDIAccess instance, we do not
// expose service level PortState directly.
PortState ToDeviceState(PortState state) {
if (state == PortState::OPENED)
return PortState::CONNECTED;
return state;
}
} // namespace
MIDIAccess::MIDIAccess(
std::unique_ptr<MIDIAccessor> accessor,
bool sysex_enabled,
const Vector<MIDIAccessInitializer::PortDescriptor>& ports,
ExecutionContext* execution_context)
: ContextLifecycleObserver(execution_context),
accessor_(std::move(accessor)),
sysex_enabled_(sysex_enabled),
has_pending_activity_(false) {
accessor_->SetClient(this);
for (const auto& port : ports) {
if (port.type == MIDIPort::kTypeInput) {
inputs_.push_back(MIDIInput::Create(this, port.id, port.manufacturer,
port.name, port.version,
ToDeviceState(port.state)));
} else {
outputs_.push_back(MIDIOutput::Create(
this, outputs_.size(), port.id, port.manufacturer, port.name,
port.version, ToDeviceState(port.state)));
}
}
}
MIDIAccess::~MIDIAccess() = default;
void MIDIAccess::Dispose() {
accessor_.reset();
}
EventListener* MIDIAccess::onstatechange() {
return GetAttributeEventListener(event_type_names::kStatechange);
}
void MIDIAccess::setOnstatechange(EventListener* listener) {
has_pending_activity_ = listener;
SetAttributeEventListener(event_type_names::kStatechange, listener);
}
bool MIDIAccess::HasPendingActivity() const {
return has_pending_activity_ && GetExecutionContext() &&
!GetExecutionContext()->IsContextDestroyed();
}
MIDIInputMap* MIDIAccess::inputs() const {
HeapVector<Member<MIDIInput>> inputs;
HashSet<String> ids;
for (MIDIInput* input : inputs_) {
if (input->GetState() != PortState::DISCONNECTED) {
inputs.push_back(input);
ids.insert(input->id());
}
}
if (inputs.size() != ids.size()) {
// There is id duplication that violates the spec.
inputs.clear();
}
return MakeGarbageCollected<MIDIInputMap>(inputs);
}
MIDIOutputMap* MIDIAccess::outputs() const {
HeapVector<Member<MIDIOutput>> outputs;
HashSet<String> ids;
for (MIDIOutput* output : outputs_) {
if (output->GetState() != PortState::DISCONNECTED) {
outputs.push_back(output);
ids.insert(output->id());
}
}
if (outputs.size() != ids.size()) {
// There is id duplication that violates the spec.
outputs.clear();
}
return MakeGarbageCollected<MIDIOutputMap>(outputs);
}
void MIDIAccess::DidAddInputPort(const String& id,
const String& manufacturer,
const String& name,
const String& version,
PortState state) {
DCHECK(IsMainThread());
MIDIInput* port = MIDIInput::Create(this, id, manufacturer, name, version,
ToDeviceState(state));
inputs_.push_back(port);
DispatchEvent(*MIDIConnectionEvent::Create(port));
}
void MIDIAccess::DidAddOutputPort(const String& id,
const String& manufacturer,
const String& name,
const String& version,
PortState state) {
DCHECK(IsMainThread());
unsigned port_index = outputs_.size();
MIDIOutput* port = MIDIOutput::Create(this, port_index, id, manufacturer,
name, version, ToDeviceState(state));
outputs_.push_back(port);
DispatchEvent(*MIDIConnectionEvent::Create(port));
}
void MIDIAccess::DidSetInputPortState(unsigned port_index, PortState state) {
DCHECK(IsMainThread());
if (port_index >= inputs_.size())
return;
PortState device_state = ToDeviceState(state);
if (inputs_[port_index]->GetState() != device_state)
inputs_[port_index]->SetState(device_state);
}
void MIDIAccess::DidSetOutputPortState(unsigned port_index, PortState state) {
DCHECK(IsMainThread());
if (port_index >= outputs_.size())
return;
PortState device_state = ToDeviceState(state);
if (outputs_[port_index]->GetState() != device_state)
outputs_[port_index]->SetState(device_state);
}
void MIDIAccess::DidReceiveMIDIData(unsigned port_index,
const unsigned char* data,
size_t length,
TimeTicks time_stamp) {
DCHECK(IsMainThread());
if (port_index >= inputs_.size())
return;
inputs_[port_index]->DidReceiveMIDIData(port_index, data, length, time_stamp);
}
void MIDIAccess::SendMIDIData(unsigned port_index,
const unsigned char* data,
size_t length,
TimeTicks time_stamp) {
DCHECK(!time_stamp.is_null());
if (!GetExecutionContext() || !data || !length ||
port_index >= outputs_.size())
return;
accessor_->SendMIDIData(port_index, data, length, time_stamp);
}
void MIDIAccess::ContextDestroyed(ExecutionContext*) {
accessor_.reset();
}
void MIDIAccess::Trace(blink::Visitor* visitor) {
visitor->Trace(inputs_);
visitor->Trace(outputs_);
EventTargetWithInlineData::Trace(visitor);
ContextLifecycleObserver::Trace(visitor);
}
} // namespace blink