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TestMIDIPlatformService.cpp
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TestMIDIPlatformService.cpp
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/* 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 "TestMIDIPlatformService.h"
#include "mozilla/dom/MIDIPort.h"
#include "mozilla/dom/MIDITypes.h"
#include "mozilla/dom/MIDIPortInterface.h"
#include "mozilla/dom/MIDIPortParent.h"
#include "mozilla/dom/MIDIPlatformRunnables.h"
#include "mozilla/dom/MIDIUtils.h"
#include "mozilla/ipc/BackgroundParent.h"
#include "mozilla/Unused.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::ipc;
/**
* Runnable used for making sure ProcessMessages only happens on the IO thread.
*
*/
class ProcessMessagesRunnable : public mozilla::Runnable
{
public:
explicit ProcessMessagesRunnable(const nsAString& aPortID) :
Runnable("ProcessMessagesRunnable"),
mPortID(aPortID)
{}
~ProcessMessagesRunnable() {}
NS_IMETHOD Run()
{
// If service is no longer running, just exist without processing.
if (!MIDIPlatformService::IsRunning()) {
return NS_OK;
}
TestMIDIPlatformService* srv = static_cast<TestMIDIPlatformService*>(MIDIPlatformService::Get());
srv->ProcessMessages(mPortID);
return NS_OK;
}
private:
nsString mPortID;
};
/**
* Runnable used for allowing IO thread to queue more messages for processing,
* since it can't access the service object directly.
*
*/
class QueueMessagesRunnable : public MIDIBackgroundRunnable
{
public:
QueueMessagesRunnable(const nsAString& aPortID,
const nsTArray<MIDIMessage>& aMsgs) :
MIDIBackgroundRunnable("QueueMessagesRunnable"),
mPortID(aPortID),
mMsgs(aMsgs)
{}
~QueueMessagesRunnable() {}
virtual void RunInternal()
{
AssertIsOnBackgroundThread();
MIDIPlatformService::Get()->QueueMessages(mPortID, mMsgs);
}
private:
nsString mPortID;
nsTArray<MIDIMessage> mMsgs;
};
TestMIDIPlatformService::TestMIDIPlatformService() :
mBackgroundThread(NS_GetCurrentThread()),
mControlInputPort(NS_LITERAL_STRING("b744eebe-f7d8-499b-872b-958f63c8f522"),
NS_LITERAL_STRING("Test Control MIDI Device Input Port"),
NS_LITERAL_STRING("Test Manufacturer"),
NS_LITERAL_STRING("1.0.0"),
static_cast<uint32_t>(MIDIPortType::Input)),
mControlOutputPort(NS_LITERAL_STRING("ab8e7fe8-c4de-436a-a960-30898a7c9a3d"),
NS_LITERAL_STRING("Test Control MIDI Device Output Port"),
NS_LITERAL_STRING("Test Manufacturer"),
NS_LITERAL_STRING("1.0.0"),
static_cast<uint32_t>(MIDIPortType::Output)),
mStateTestInputPort(NS_LITERAL_STRING("a9329677-8588-4460-a091-9d4a7f629a48"),
NS_LITERAL_STRING("Test State MIDI Device Input Port"),
NS_LITERAL_STRING("Test Manufacturer"),
NS_LITERAL_STRING("1.0.0"),
static_cast<uint32_t>(MIDIPortType::Input)),
mStateTestOutputPort(NS_LITERAL_STRING("478fa225-b5fc-4fa6-a543-d32d9cb651e7"),
NS_LITERAL_STRING("Test State MIDI Device Output Port"),
NS_LITERAL_STRING("Test Manufacturer"),
NS_LITERAL_STRING("1.0.0"),
static_cast<uint32_t>(MIDIPortType::Output)),
mAlwaysClosedTestOutputPort(NS_LITERAL_STRING("f87d0c76-3c68-49a9-a44f-700f1125c07a"),
NS_LITERAL_STRING("Always Closed MIDI Device Output Port"),
NS_LITERAL_STRING("Test Manufacturer"),
NS_LITERAL_STRING("1.0.0"),
static_cast<uint32_t>(MIDIPortType::Output)),
mIsInitialized(false)
{
AssertIsOnBackgroundThread();
}
TestMIDIPlatformService::~TestMIDIPlatformService()
{
AssertIsOnBackgroundThread();
}
void
TestMIDIPlatformService::Init()
{
AssertIsOnBackgroundThread();
if (mIsInitialized) {
return;
}
mIsInitialized = true;
// Treat all of our special ports as always connected. When the service comes
// up, prepopulate the port list with them.
MIDIPlatformService::Get()->AddPortInfo(mControlInputPort);
MIDIPlatformService::Get()->AddPortInfo(mControlOutputPort);
MIDIPlatformService::Get()->AddPortInfo(mAlwaysClosedTestOutputPort);
nsCOMPtr<nsIRunnable> r(new SendPortListRunnable());
// Start the IO Thread.
NS_DispatchToCurrentThread(r);
}
void
TestMIDIPlatformService::Open(MIDIPortParent* aPort)
{
MOZ_ASSERT(aPort);
MIDIPortConnectionState s = MIDIPortConnectionState::Open;
if (aPort->MIDIPortInterface::Id() == mAlwaysClosedTestOutputPort.id()) {
// If it's the always closed testing port, act like it's already opened
// exclusively elsewhere.
s = MIDIPortConnectionState::Closed;
}
// Connection events are just simulated on the background thread, no need to
// push to IO thread.
nsCOMPtr<nsIRunnable> r(new SetStatusRunnable(aPort->MIDIPortInterface::Id(),
aPort->DeviceState(),
s));
NS_DispatchToCurrentThread(r);
}
void
TestMIDIPlatformService::ScheduleClose(MIDIPortParent* aPort)
{
MOZ_ASSERT(aPort);
if (aPort->ConnectionState() == MIDIPortConnectionState::Open) {
// Connection events are just simulated on the background thread, no need to
// push to IO thread.
nsCOMPtr<nsIRunnable> r(new SetStatusRunnable(aPort->MIDIPortInterface::Id(),
aPort->DeviceState(),
MIDIPortConnectionState::Closed));
NS_DispatchToCurrentThread(r);
}
}
void
TestMIDIPlatformService::Stop()
{
AssertIsOnBackgroundThread();
}
void TestMIDIPlatformService::ScheduleSend(const nsAString& aPortId)
{
nsCOMPtr<nsIRunnable> r(new ProcessMessagesRunnable(aPortId));
NS_DispatchToCurrentThread(r);
}
void TestMIDIPlatformService::ProcessMessages(const nsAString& aPortId)
{
nsTArray<MIDIMessage> msgs;
GetMessagesBefore(aPortId, TimeStamp::Now(), msgs);
for (MIDIMessage msg : msgs) {
// receiving message from test control port
if (aPortId == mControlOutputPort.id()) {
switch (msg.data()[0]) {
// Hit a note, get a test!
case 0x90:
switch (msg.data()[1]) {
// Echo data/timestamp back through output port
case 0x00:
{
nsCOMPtr<nsIRunnable> r(new ReceiveRunnable(mControlInputPort.id(), msg));
mBackgroundThread->Dispatch(r, NS_DISPATCH_NORMAL);
break;
}
// Cause control test ports to connect
case 0x01:
{
nsCOMPtr<nsIRunnable> r1(new AddPortRunnable(mStateTestInputPort));
mBackgroundThread->Dispatch(r1, NS_DISPATCH_NORMAL);
break;
}
// Cause control test ports to disconnect
case 0x02:
{
nsCOMPtr<nsIRunnable> r1(new RemovePortRunnable(mStateTestInputPort));
mBackgroundThread->Dispatch(r1, NS_DISPATCH_NORMAL);
break;
}
// Test for packet timing
case 0x03:
{
// Append a few echo command packets in reverse timing order, should
// come out in correct order on other end.
nsTArray<MIDIMessage> newMsgs;
nsTArray<uint8_t> msg;
msg.AppendElement(0x90);
msg.AppendElement(0x00);
msg.AppendElement(0x00);
// PR_Now() returns nanosecods, and we need a double with fractional
// milliseconds.
TimeStamp currentTime = TimeStamp::Now();
for (int i = 0; i <= 5; ++i) {
// Insert messages with timestamps in reverse order, to make sure
// we're sorting correctly.
newMsgs.AppendElement(
MIDIMessage(msg, currentTime -
TimeDuration::FromMilliseconds(i * 2)));
}
nsCOMPtr<nsIRunnable> r(new QueueMessagesRunnable(aPortId, newMsgs));
mBackgroundThread->Dispatch(r, NS_DISPATCH_NORMAL);
break;
}
default:
NS_WARNING("Unknown Test MIDI message received!");
}
break;
// Sysex tests
case 0xF0:
switch (msg.data()[1]) {
// Echo data/timestamp back through output port
case 0x00:
{
nsCOMPtr<nsIRunnable> r(new ReceiveRunnable(mControlInputPort.id(), msg));
mBackgroundThread->Dispatch(r, NS_DISPATCH_NORMAL);
break;
}
// Test for system real time messages in the middle of sysex messages.
case 0x01:
{
nsTArray<uint8_t> msgs;
const uint8_t msg[] = {0xF0, 0x01, 0xF8, 0x02, 0x03, 0x04, 0xF9, 0x05, 0xF7};
// Can't use AppendElements on an array here, so just do range based loading.
for (auto& s : msg) {
msgs.AppendElement(s);
}
nsTArray<MIDIMessage> newMsgs;
MIDIUtils::ParseMessages(msgs, TimeStamp::Now(), newMsgs);
nsCOMPtr<nsIRunnable> r(new ReceiveRunnable(mControlInputPort.id(), newMsgs));
mBackgroundThread->Dispatch(r, NS_DISPATCH_NORMAL);
break;
}
default:
NS_WARNING("Unknown Test Sysex MIDI message received!");
}
break;
}
}
}
}