summaryrefslogtreecommitdiffstats
path: root/dom/midi/MIDIOutput.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'dom/midi/MIDIOutput.cpp')
-rw-r--r--dom/midi/MIDIOutput.cpp102
1 files changed, 102 insertions, 0 deletions
diff --git a/dom/midi/MIDIOutput.cpp b/dom/midi/MIDIOutput.cpp
new file mode 100644
index 0000000000..3cdd7d308d
--- /dev/null
+++ b/dom/midi/MIDIOutput.cpp
@@ -0,0 +1,102 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/MIDIOutput.h"
+#include "mozilla/dom/MIDIPortChild.h"
+#include "mozilla/dom/MIDITypes.h"
+#include "mozilla/dom/MIDIOutputBinding.h"
+#include "mozilla/dom/MIDIUtils.h"
+#include "nsDOMNavigationTiming.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/Performance.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+MIDIOutput::MIDIOutput(nsPIDOMWindowInner* aWindow) : MIDIPort(aWindow) {}
+
+// static
+RefPtr<MIDIOutput> MIDIOutput::Create(nsPIDOMWindowInner* aWindow,
+ MIDIAccess* aMIDIAccessParent,
+ const MIDIPortInfo& aPortInfo,
+ const bool aSysexEnabled) {
+ MOZ_ASSERT(static_cast<MIDIPortType>(aPortInfo.type()) ==
+ MIDIPortType::Output);
+ RefPtr<MIDIOutput> port = new MIDIOutput(aWindow);
+ if (NS_WARN_IF(
+ !port->Initialize(aPortInfo, aSysexEnabled, aMIDIAccessParent))) {
+ return nullptr;
+ }
+ return port;
+}
+
+JSObject* MIDIOutput::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return MIDIOutput_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void MIDIOutput::Send(const Sequence<uint8_t>& aData,
+ const Optional<double>& aTimestamp, ErrorResult& aRv) {
+ if (Port()->DeviceState() == MIDIPortDeviceState::Disconnected) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+ // The timestamp passed to us is a DOMHighResTimestamp, which is in relation
+ // to the start of navigation timing. This needs to be turned into a
+ // TimeStamp before it hits the platform specific MIDI service.
+ //
+ // If timestamp is either not set or zero, set timestamp to now and send the
+ // message ASAP.
+ TimeStamp timestamp;
+ if (aTimestamp.WasPassed() && aTimestamp.Value() != 0) {
+ nsCOMPtr<Document> doc = GetOwner()->GetDoc();
+ if (!doc) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+ TimeDuration ts_diff = TimeDuration::FromMilliseconds(aTimestamp.Value());
+ timestamp = GetOwner()
+ ->GetPerformance()
+ ->GetDOMTiming()
+ ->GetNavigationStartTimeStamp() +
+ ts_diff;
+ } else {
+ timestamp = TimeStamp::Now();
+ }
+
+ nsTArray<MIDIMessage> msgArray;
+ bool ret = MIDIUtils::ParseMessages(aData, timestamp, msgArray);
+ if (!ret) {
+ aRv.ThrowTypeError("Invalid MIDI message");
+ return;
+ }
+
+ if (msgArray.IsEmpty()) {
+ aRv.ThrowTypeError("Empty message array");
+ return;
+ }
+
+ // TODO Move this check back to parse message so we don't have to iterate
+ // twice.
+ if (!SysexEnabled()) {
+ for (auto& msg : msgArray) {
+ if (MIDIUtils::IsSysexMessage(msg)) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR);
+ return;
+ }
+ }
+ }
+ Port()->SendSend(msgArray);
+}
+
+void MIDIOutput::Clear() {
+ if (Port()->ConnectionState() == MIDIPortConnectionState::Closed) {
+ return;
+ }
+ Port()->SendClear();
+}