Experimental AVFoundation renderer

2026-10-12 03:24:00 +00:00 · 2018-07-17 22:57:15 -07:00
207 changed files with 16152 additions and 9464 deletions
@@ -1,5 +1 @@
 *pro.user
-
-
-**/.vs/
-build/
@@ -1,6 +1,9 @@
 [submodule "moonlight-common-c/moonlight-common-c"]
 	path = moonlight-common-c/moonlight-common-c
 	url = https://github.com/moonlight-stream/moonlight-common-c.git
+[submodule "opus/opus"]
+	path = opus/opus
+	url = https://github.com/xiph/opus.git
 [submodule "qmdnsengine/qmdnsengine"]
 	path = qmdnsengine/qmdnsengine
 	url = https://github.com/cgutman/qmdnsengine.git
@@ -1,41 +0,0 @@
-language: cpp
-
-git:
-  depth: 1
-
-matrix:
-  include:
-    - os: osx
-      compiler: clang
-    - os: linux
-      sudo: required
-      dist: xenial
-      compiler: gcc
-      addons:
-        apt:
-          sources:
-            - sourceline: 'ppa:beineri/opt-qt596-xenial'
-          packages:
-            - qt59base
-            - qt59quickcontrols2
-            - qt59svg
-            - libesd0-dev
-            - libgl-dev
-            - libopus-dev
-
-install:
-    - '[ "$TRAVIS_OS_NAME" != osx ] || brew install qt5'
-    - '[ "$TRAVIS_OS_NAME" != osx ] || brew link --force qt5'
-    - if [[ "$TRAVIS_OS_NAME" = "linux" ]]; then export SDL2_VER=2.0.8 && wget https://www.libsdl.org/release/SDL2-$SDL2_VER.tar.gz && tar -xvf SDL2-$SDL2_VER.tar.gz && cd SDL2-$SDL2_VER && ./configure && make && sudo make install && cd ..; fi
-
-before_script:
-    - '[ "$TRAVIS_OS_NAME" != "linux" ] || source /opt/qt59/bin/qt59-env.sh'
-    - qmake -v
-    - '[[ "$TRAVIS_OS_NAME" != linux || "$CXX" != clang++ ]] || export QMAKESPEC=linux-clang'
-    - '[[ "$TRAVIS_OS_NAME" != linux || "$CXX" != g++     ]] || export QMAKESPEC=linux-g++'
-    - '[ "$TRAVIS_OS_NAME" != osx ]                          || export QMAKESPEC=macx-clang'
-
-script:
-    - qmake moonlight-qt.pro -spec $QMAKESPEC
-    - make debug
-    - make release
@@ -1,31 +1,20 @@
 # Moonlight PC

-[Moonlight PC](http://moonlight-stream.com) is an open source implementation of NVIDIA's GameStream, as used by the NVIDIA Shield, but built to run on Windows, Mac, and Linux. This client is the successor to [Moonlight Chrome](https://github.com/moonlight-stream/moonlight-chrome) for streaming on PC.
+[Moonlight PC](http://moonlight-stream.com) is an open source implementation of NVIDIA's GameStream, as used by the NVIDIA Shield, but built to run on Windows, Mac, and Linux.

 Moonlight also has mobile versions for [Android](https://github.com/moonlight-stream/moonlight-android) and  [iOS](https://github.com/moonlight-stream/moonlight-ios).

-This client is currently still in development (pre-alpha), but the streaming performance is already much better than the older Moonlight Chrome client on many machines. Test releases may be available for your OS on the [Releases page](https://github.com/moonlight-stream/moonlight-qt/releases).
-
-You can follow development on our [Discord server](https://discord.gg/6ERtzFY).
-
- [![Windows AppVeyor Status](https://ci.appveyor.com/api/projects/status/glj5cxqwy2w3bglv/branch/master?svg=true)](https://ci.appveyor.com/project/cgutman/moonlight-qt/branch/master)
- [![Mac and Linux Travis CI Status](https://travis-ci.org/moonlight-stream/moonlight-qt.svg?branch=master)](https://travis-ci.org/moonlight-stream/moonlight-qt)
-
-## Features
- - Hardware accelerated video decoding on Windows, Mac, and Linux
- - Supports streaming at up to 90 FPS on high refresh rate monitors
- - Supports streaming at 720p, 1080p, 1440p, or 4K
- - 5.1 surround sound audio
- - HEVC support for better image quality at reduced bandwidth
- - Keyboard and mouse support
- - Gamepad support with SDL gamepad mappings
+This is a work-in-progress port and is only suitable for development use at this point.

 ## Building
-1. Install the latest Qt SDK (and optionally, the Qt Creator IDE) from https://www.qt.io/download (select MSVC toolchain on Windows)
-2. Run `git submodule update --init --recursive` from within `moonlight-qt/`
-3. Open the project in Qt Creator or build from qmake on the command line
+1. Install the latest Qt SDK (and optionally, the Qt Creator IDE) from https://www.qt.io/download
+3. Run `git submodule update --init --recursive` from within `moonlight-qt/`
+4. Open the project in Qt Creator or build from qmake on the command line

 ## Contribute
+
+This project is being actively developed at [XDA Developers](http://forum.xda-developers.com/showthread.php?t=2505510)
+
 1. Fork us
 2. Write code
 3. Send Pull Requests
@@ -3,28 +3,24 @@
 <plist version="1.0">
 <dict>
 	<key>CFBundleExecutable</key>
-	<string>Moonlight</string>
+	<string>moonlight-qt</string>
 	<key>CFBundleGetInfoString</key>
-	<string>Stream games from your NVIDIA GameStream-enabled PC</string>
+	<string>Created by Qt/QMake</string>
 	<key>CFBundleIconFile</key>
-	<string>moonlight</string>
+	<string>macos</string>
 	<key>CFBundleIdentifier</key>
-	<string>com.moonlight-stream.Moonlight</string>
-	<key>NSHighResolutionCapable</key>
-	<true/>
+	<string>com.yourcompany.moonlight-qt</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>LSMinimumSystemVersion</key>
 	<string>10.10</string>
+	<key>NOTE</key>
+	<string>This file was generated by Qt/QMake.</string>
 	<key>NSPrincipalClass</key>
 	<string>NSApplication</string>
 	<key>NSSupportsAutomaticGraphicsSwitching</key>
 	<true/>
-	<key>CFBundleVersion</key>
-	<string>0.0.4</string>
-	<key>CFBundleDisplayName</key>
-	<string>Moonlight</string>
 </dict>
 </plist>
@@ -1,16 +1,7 @@
-QT += core quick network quickcontrols2 svg
+QT += core quick network quickcontrols2
 CONFIG += c++11

-unix:!macx {
-    TARGET = moonlight
-} else {
-    # On macOS, this is the name displayed in the global menu bar
-    TARGET = Moonlight
-}
-
-# Support debug and release builds from command line for CI
-CONFIG += debug_and_release
-
+TARGET = moonlight-qt
 TEMPLATE = app

 # The following define makes your compiler emit warnings if you use
@@ -37,32 +28,20 @@ win32 {
    LIBS += ws2_32.lib winmm.lib dxva2.lib ole32.lib
 }
 macx {
-    INCLUDEPATH += $$PWD/../libs/mac/include $$PWD/../libs/mac/Frameworks/SDL2.framework/Versions/A/Headers
-    LIBS += -L$$PWD/../libs/mac/lib -F$$PWD/../libs/mac/Frameworks
+    INCLUDEPATH += $$PWD/../libs/mac/include
+    LIBS += -L$$PWD/../libs/mac/lib
 }

 unix:!macx {
    CONFIG += link_pkgconfig
-    PKGCONFIG += openssl sdl2 opus
-    LIBS += -ldl
-
-    packagesExist(libavcodec) {
-        PKGCONFIG += libavcodec libavutil
-        CONFIG += ffmpeg
-
-        packagesExist(libva) {
-            CONFIG += libva
-        }
-    }
+    PKGCONFIG += openssl sdl2 libavcodec libavdevice libavformat libavutil
 }
 win32 {
-    LIBS += -llibssl -llibcrypto -lSDL2 -lavcodec -lavutil -lopus
-    CONFIG += ffmpeg
+    LIBS += -llibssl -llibcrypto -lSDL2 -lavcodec -lavdevice -lavformat -lavutil
 }
 macx {
-    LIBS += -lssl -lcrypto -lavcodec.58 -lavutil.56 -lopus -framework SDL2
-    LIBS += -lobjc -framework VideoToolbox -framework AVFoundation -framework CoreVideo -framework CoreGraphics -framework CoreMedia -framework AppKit
-    CONFIG += ffmpeg
+    LIBS += -lssl -lcrypto -lSDL2 -lavcodec.58 -lavdevice.58 -lavformat.58 -lavutil.56
+    LIBS += -lobjc -framework VideoToolbox -framework AVFoundation -framework CoreVideo -framework CoreMedia -framework AppKit
 }

 SOURCES += \
@@ -76,8 +55,17 @@ SOURCES += \
    streaming/input.cpp \
    streaming/session.cpp \
    streaming/audio.cpp \
+    streaming/video/ffmpeg.cpp \
    gui/computermodel.cpp \
-    gui/appmodel.cpp
+    gui/appmodel.cpp \
+    streaming/video/ffmpeg-renderers/sdl.cpp
+
+win32 {
+    SOURCES += streaming/video/ffmpeg-renderers/dxva2.cpp
+}
+macx {
+    SOURCES += streaming/video/avfoundation.mm
+}

 HEADERS += \
    utils.h \
@@ -91,46 +79,15 @@ HEADERS += \
    streaming/session.hpp \
    gui/computermodel.h \
    gui/appmodel.h \
-    streaming/video/decoder.h
+    streaming/video/decoder.h \
+    streaming/video/ffmpeg.h \
+    streaming/video/ffmpeg-renderers/renderer.h

-# Platform-specific renderers and decoders
-ffmpeg {
-    message(FFmpeg decoder selected)
-
-    DEFINES += HAVE_FFMPEG
-    SOURCES += \
-        streaming/video/ffmpeg.cpp \
-        streaming/video/ffmpeg-renderers/sdl.cpp
-    HEADERS += \
-        streaming/video/ffmpeg.h \
-        streaming/video/ffmpeg-renderers/renderer.h
-}
-libva {
-    message(VAAPI renderer selected)
-
-    DEFINES += HAVE_LIBVA
-    SOURCES += streaming/video/ffmpeg-renderers/vaapi.cpp
-    HEADERS += streaming/video/ffmpeg-renderers/vaapi.h
-}
-config_SLVideo {
-    message(SLVideo decoder/renderer selected)
-
-    DEFINES += HAVE_SLVIDEO
-    LIBS += -lSLVideo
-    SOURCES += streaming/video/sl.cpp
-    HEADERS += streaming/video/sl.h
-}
 win32 {
-    message(DXVA2 renderer selected)
-
-    SOURCES += streaming/video/ffmpeg-renderers/dxva2.cpp
    HEADERS += streaming/video/ffmpeg-renderers/dxva2.h
 }
 macx {
-    message(VideoToolbox renderer selected)
-
-    SOURCES += streaming/video/ffmpeg-renderers/vt.mm
-    HEADERS += streaming/video/ffmpeg-renderers/vt.h
+    HEADERS += streaming/video/avfoundation.h
 }

 RESOURCES += \
@@ -150,6 +107,13 @@ else:unix: LIBS += -L$$OUT_PWD/../moonlight-common-c/ -lmoonlight-common-c
 INCLUDEPATH += $$PWD/../moonlight-common-c/moonlight-common-c/src
 DEPENDPATH += $$PWD/../moonlight-common-c/moonlight-common-c/src

+win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../opus/release/ -lopus
+else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../opus/debug/ -lopus
+else:unix: LIBS += -L$$OUT_PWD/../opus/ -lopus
+
+INCLUDEPATH += $$PWD/../opus/opus/include
+DEPENDPATH += $$PWD/../opus/opus/include
+
 win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../qmdnsengine/release/ -lqmdnsengine
 else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../qmdnsengine/debug/ -lqmdnsengine
 else:unix: LIBS += -L$$OUT_PWD/../qmdnsengine/ -lqmdnsengine
@@ -157,36 +121,14 @@ else:unix: LIBS += -L$$OUT_PWD/../qmdnsengine/ -lqmdnsengine
 INCLUDEPATH += $$PWD/../qmdnsengine/qmdnsengine/src/include $$PWD/../qmdnsengine
 DEPENDPATH += $$PWD/../qmdnsengine/qmdnsengine/src/include $$PWD/../qmdnsengine

-unix:!macx: {
-    isEmpty(PREFIX) {
-        PREFIX = /usr/local
-    }
-    isEmpty(BINDIR) {
-        BINDIR = bin
-    }
+# Default rules for deployment.
+qnx: target.path = /tmp/$${TARGET}/bin
+else: unix:!android: target.path = /opt/$${TARGET}/bin
+!isEmpty(target.path): INSTALLS += target

-    target.path = $$PREFIX/$$BINDIR/
-
-    desktop.files = deploy/linux/com.moonlight_stream.Moonlight.desktop
-    desktop.path = $$PREFIX/share/applications/
-
-    icons.files = res/moonlight.svg
-    icons.path = $$PREFIX/share/icons/hicolor/scalable/apps/
-
-    appdata.files = deploy/linux/com.moonlight_stream.Moonlight.appdata.xml
-    appdata.path = $$PREFIX/share/metainfo/
-
-    INSTALLS += target desktop icons appdata
-}
-win32 {
-    RC_ICONS = moonlight.ico
-}
 macx {
    QMAKE_INFO_PLIST = $$PWD/Info.plist
-
-    APP_BUNDLE_RESOURCES.files = moonlight.icns
-    APP_BUNDLE_RESOURCES.path = Contents/Resources
-    QMAKE_BUNDLE_DATA += APP_BUNDLE_RESOURCES
+    APP_QML_FILES.files = res/macos.icns
+    APP_QML_FILES.path = Contents/Resources
+    QMAKE_BUNDLE_DATA += APP_QML_FILES
 }
-
-VERSION = 0.0.4
@@ -140,12 +140,12 @@ NvComputer::NvComputer(QString address, QString serverInfo)
 bool NvComputer::wake()
 {
    if (state == NvComputer::CS_ONLINE) {
-        qWarning() << name << "is already online";
+        qWarning() << name << " is already online";
        return true;
    }

    if (macAddress.isNull()) {
-        qWarning() << name << "has no MAC address stored";
+        qWarning() << name << " has no MAC address stored";
        return false;
    }

@@ -184,7 +184,7 @@ bool NvComputer::wake()
                // Send to all ports
                for (quint16 port : WOL_PORTS) {
                    if (sock.writeDatagram(wolPayload, address, port)) {
-                        qInfo().nospace().noquote() << "Send WoL packet to " << name << " via " << address.toString() << ":" << port;
+                        qDebug() << "Send WoL packet to " << name << " via " << address.toString() << ":" << port;
                        success = true;
                    }
                }
@@ -286,56 +286,6 @@ ComputerManager::ComputerManager(QObject *parent)
    settings.endArray();
 }

-ComputerManager::~ComputerManager()
-{
-    QWriteLocker lock(&m_Lock);
-
-    // Delete machines that haven't been resolved yet
-    while (!m_PendingResolution.isEmpty()) {
-        MdnsPendingComputer* computer = m_PendingResolution.first();
-        delete computer;
-        m_PendingResolution.removeFirst();
-    }
-
-    // Delete the browser to stop discovery
-    delete m_MdnsBrowser;
-    m_MdnsBrowser = nullptr;
-
-    {
-        QMutableMapIterator<QString, QThread*> i(m_PollThreads);
-
-        // Interrupt all polling threads
-        while (i.hasNext()) {
-            i.next();
-            i.value()->requestInterruption();
-        }
-
-        // Wait for all threads to terminate before destroying
-        // the NvComputer objects.
-        i.toFront();
-        while (i.hasNext()) {
-            i.next();
-
-            QThread* thread = i.value();
-            thread->wait();
-            delete thread;
-
-            i.remove();
-        }
-    }
-
-    {
-        QMutableMapIterator<QString, NvComputer*> i(m_KnownHosts);
-
-        // Destroy all NvComputer objects
-        while (i.hasNext()) {
-            i.next();
-            delete i.value();
-            i.remove();
-        }
-    }
-}
-
 void ComputerManager::saveHosts()
 {
    QSettings settings;
@@ -362,7 +312,7 @@ void ComputerManager::startPolling()
    m_MdnsBrowser = new QMdnsEngine::Browser(&m_MdnsServer, "_nvstream._tcp.local.", &m_MdnsCache);
    connect(m_MdnsBrowser, &QMdnsEngine::Browser::serviceAdded,
            this, [this](const QMdnsEngine::Service& service) {
-        qInfo() << "Discovered mDNS host:" << service.hostname();
+        qDebug() << "Discovered mDNS host: " << service.hostname();

        MdnsPendingComputer* pendingComputer = new MdnsPendingComputer(&m_MdnsServer, &m_MdnsCache, service);
        connect(pendingComputer, SIGNAL(resolvedv4(MdnsPendingComputer*,QHostAddress)),
@@ -381,7 +331,7 @@ void ComputerManager::startPolling()
 void ComputerManager::handleMdnsServiceResolved(MdnsPendingComputer* computer,
                                                const QHostAddress& address)
 {
-    qInfo() << "Resolved" << computer->hostname() << "to" << address.toString();
+    qDebug() << "Resolved " << computer->hostname() << " to " << address.toString();

    addNewHost(address.toString(), true);

@@ -148,26 +148,31 @@ private:
        int pollsSinceLastAppListFetch = POLLS_PER_APPLIST_FETCH;
        while (!isInterruptionRequested()) {
            bool stateChanged = false;
-            bool online = false;
-            for (int i = 0; i < TRIES_BEFORE_OFFLINING && !online; i++) {
+            for (int i = 0; i < TRIES_BEFORE_OFFLINING; i++) {
                for (auto& address : m_Computer->uniqueAddresses()) {
                    if (isInterruptionRequested()) {
                        return;
                    }

                    if (tryPollComputer(address, stateChanged)) {
-                        online = true;
                        break;
                    }
                }
+
+                // No need to continue retrying if we're online
+                if (m_Computer->state == NvComputer::CS_ONLINE) {
+                    break;
+                }
            }

            // Check if we failed after all retry attempts
            // Note: we don't need to acquire the read lock here,
            // because we're on the writing thread.
-            if (!online && m_Computer->state != NvComputer::CS_OFFLINE) {
-                m_Computer->state = NvComputer::CS_OFFLINE;
-                stateChanged = true;
+            if (m_Computer->state != NvComputer::CS_ONLINE) {
+                if (m_Computer->state != NvComputer::CS_OFFLINE) {
+                    m_Computer->state = NvComputer::CS_OFFLINE;
+                    stateChanged = true;
+                }
            }

            // Grab the applist if it's empty or it's been long enough that we need to refresh
@@ -244,8 +249,6 @@ class ComputerManager : public QObject
 public:
    explicit ComputerManager(QObject *parent = nullptr);

-    virtual ~ComputerManager();
-
    Q_INVOKABLE void startPolling();

    Q_INVOKABLE void stopPollingAsync();
@@ -2,12 +2,12 @@
 #include "utils.h"

 #include <QDebug>
+#include <QRandomGenerator64>

 #include <openssl/pem.h>
 #include <openssl/rsa.h>
 #include <openssl/bn.h>
 #include <openssl/x509.h>
-#include <openssl/rand.h>

 #define SER_UNIQUEID "uniqueid"
 #define SER_CERT "certificate"
@@ -101,7 +101,7 @@ void IdentityManager::createCredentials(QSettings& settings)
    settings.setValue(SER_CERT, m_CachedPemCert);
    settings.setValue(SER_KEY, m_CachedPrivateKey);

-    qInfo() << "Wrote new identity credentials to settings";
+    qDebug() << "Wrote new identity credentials to settings";
 }

 IdentityManager::IdentityManager()
@@ -112,7 +112,7 @@ IdentityManager::IdentityManager()
    m_CachedPrivateKey = settings.value(SER_KEY).toByteArray();

    if (m_CachedPemCert.isEmpty() || m_CachedPrivateKey.isEmpty()) {
-        qInfo() << "No existing credentials found";
+        qDebug() << "No existing credentials found";
        createCredentials(settings);
    }
    else if (getSslCertificate().isNull()) {
@@ -157,14 +157,10 @@ IdentityManager::getSslKey()

        // We must write out our PEM in the old PKCS1 format for SecureTransport
        // on macOS/iOS to be able to read it.
-#ifdef Q_OS_DARWIN
-        PEM_write_bio_PrivateKey_traditional(bio, pk, nullptr, nullptr, 0, nullptr, 0);
-#else
-        PEM_write_bio_PrivateKey(bio, pk, nullptr, nullptr, 0, nullptr, 0);
-#endif
-
        BUF_MEM* mem;
        BIO_get_mem_ptr(bio, &mem);
+        PEM_write_bio_PrivateKey_traditional(bio, pk, nullptr, nullptr, 0, nullptr, 0);
+
        m_CachedSslKey = QSslKey(QByteArray::fromRawData(mem->data, (int)mem->length), QSsl::Rsa);

        BIO_free(bio);
@@ -191,15 +187,14 @@ IdentityManager::getUniqueId()
        // Load the unique ID from settings
        m_CachedUniqueId = settings.value(SER_UNIQUEID).toString();
        if (!m_CachedUniqueId.isEmpty() && !m_CachedUniqueId.isNull()) {
-            qInfo() << "Loaded unique ID from settings:" << m_CachedUniqueId;
+            qDebug() << "Loaded unique ID from settings: " << m_CachedUniqueId;
        }
        else {
            // Generate a new unique ID in base 16
-            uint64_t uid;
-            RAND_bytes(reinterpret_cast<unsigned char*>(&uid), sizeof(uid));
-            m_CachedUniqueId = QString::number(uid, 16);
+            m_CachedUniqueId = QString::number(
+                        QRandomGenerator64::securelySeeded().generate64(), 16);

-            qInfo() << "Generated new unique ID:" << m_CachedUniqueId;
+            qDebug() << "Generated new unique ID: " << m_CachedUniqueId;

            settings.setValue(SER_UNIQUEID, m_CachedUniqueId);
        }
@@ -123,11 +123,6 @@ NvHTTP::launchApp(int appId,
                  bool localAudio,
                  int gamepadMask)
 {
-    int riKeyId;
-
-    memcpy(&riKeyId, streamConfig->remoteInputAesIv, sizeof(riKeyId));
-    riKeyId = qFromBigEndian(riKeyId);
-
    QString response =
            openConnectionToString(m_BaseUrlHttps,
                                   "launch",
@@ -137,7 +132,7 @@ NvHTTP::launchApp(int appId,
                                   QString::number(streamConfig->fps)+
                                   "&additionalStates=1&sops="+QString::number(sops ? 1 : 0)+
                                   "&rikey="+QByteArray(streamConfig->remoteInputAesKey, sizeof(streamConfig->remoteInputAesKey)).toHex()+
-                                   "&rikeyid="+QString::number(riKeyId)+
+                                   "&rikeyid="+QString::number(qFromBigEndian(*(int*)streamConfig->remoteInputAesIv))+
                                   (streamConfig->enableHdr ?
                                       "&hdrMode=1&clientHdrCapVersion=0&clientHdrCapSupportedFlagsInUint32=0&clientHdrCapMetaDataId=NV_STATIC_METADATA_TYPE_1&clientHdrCapDisplayData=0x0x0x0x0x0x0x0x0x0x0" :
                                        "")+
@@ -154,16 +149,11 @@ NvHTTP::launchApp(int appId,
 void
 NvHTTP::resumeApp(PSTREAM_CONFIGURATION streamConfig)
 {
-    int riKeyId;
-
-    memcpy(&riKeyId, streamConfig->remoteInputAesIv, sizeof(riKeyId));
-    riKeyId = qFromBigEndian(riKeyId);
-
    QString response =
            openConnectionToString(m_BaseUrlHttps,
                                   "resume",
                                   "rikey="+QString(QByteArray(streamConfig->remoteInputAesKey, sizeof(streamConfig->remoteInputAesKey)).toHex())+
-                                   "&rikeyid="+QString::number(riKeyId)+
+                                   "&rikeyid="+QString::number(qFromBigEndian(*(int*)streamConfig->remoteInputAesIv))+
                                   "&surroundAudioInfo="+getSurroundAudioInfoString(streamConfig->audioConfiguration),
                                   false);

@@ -275,10 +265,7 @@ NvHTTP::verifyResponseStatus(QString xml)
            else
            {
                QString statusMessage = xmlReader.attributes().value("status_message").toString();
-                if (statusCode != 401) {
-                    // 401 is expected for unpaired PCs when we fetch serverinfo over HTTPS
-                    qWarning() << "Request failed:" << statusCode << statusMessage;
-                }
+                qDebug() << "Request failed: " << statusCode << " " << statusMessage;
                throw GfeHttpResponseException(statusCode, statusMessage);
            }
        }
@@ -343,9 +330,7 @@ NvHTTP::openConnectionToString(QUrl baseUrl,
    QNetworkReply* reply = openConnection(baseUrl, command, arguments, enableTimeout);
    QString ret;

-    QTextStream stream(reply);
-    stream.setCodec("UTF-8");
-    ret = stream.readAll();
+    ret = QTextStream(reply).readAll();
    delete reply;

    return ret;
@@ -381,13 +366,13 @@ NvHTTP::openConnection(QUrl baseUrl,
    {
        QTimer::singleShot(REQUEST_TIMEOUT_MS, &loop, SLOT(quit()));
    }
-    qInfo() << "Executing request:" << url.toString();
+    qDebug() << "Executing request: " << url.toString();
    loop.exec(QEventLoop::ExcludeUserInputEvents);

    // Abort the request if it timed out
    if (!reply->isFinished())
    {
-        qWarning() << "Aborting timed out request for" << url.toString();
+        qDebug() << "Aborting timed out request for " << url.toString();
        reply->abort();
    }

@@ -398,7 +383,7 @@ NvHTTP::openConnection(QUrl baseUrl,
    // Handle error
    if (reply->error() != QNetworkReply::NoError)
    {
-        qWarning() << command << " request failed with error " << reply->error();
+        qDebug() << command << " request failed with error " << reply->error();
        GfeHttpResponseException exception(reply->error(), reply->errorString());
        delete reply;
        throw exception;
@@ -1,6 +1,8 @@
 #include "nvpairingmanager.h"
 #include "utils.h"

+#include <QRandomGenerator>
+
 #include <openssl/bio.h>
 #include <openssl/aes.h>
 #include <openssl/rand.h>
@@ -19,7 +21,7 @@ NvPairingManager::NvPairingManager(QString address) :
    BIO_free_all(bio);
    if (m_Cert == nullptr)
    {
-        throw std::runtime_error("Unable to load certificate");
+        throw new std::runtime_error("Unable to load certificate");
    }

    QByteArray pk = IdentityManager::get()->getPrivateKey();
@@ -30,7 +32,7 @@ NvPairingManager::NvPairingManager(QString address) :
    BIO_free_all(bio);
    if (m_PrivateKey == nullptr)
    {
-        throw std::runtime_error("Unable to load private key");
+        throw new std::runtime_error("Unable to load private key");
    }
 }

@@ -87,16 +89,14 @@ NvPairingManager::getSignatureFromPemCert(QByteArray certificate)
    X509* cert = PEM_read_bio_X509(bio, nullptr, nullptr, nullptr);
    BIO_free_all(bio);

-#if (OPENSSL_VERSION_NUMBER < 0x10002000L)
-    ASN1_BIT_STRING *asnSignature = cert->signature;
-#elif (OPENSSL_VERSION_NUMBER < 0x10100000L)
-    ASN1_BIT_STRING *asnSignature;
-    X509_get0_signature(&asnSignature, NULL, cert);
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
+   ASN1_BIT_STRING *asnSignature;
 #else
-    const ASN1_BIT_STRING *asnSignature;
-    X509_get0_signature(&asnSignature, NULL, cert);
+   const ASN1_BIT_STRING *asnSignature;
 #endif

+    X509_get0_signature(&asnSignature, NULL, cert);
+
    QByteArray signature(reinterpret_cast<char*>(asnSignature->data), asnSignature->length);

    X509_free(cert);
@@ -164,7 +164,7 @@ NvPairingManager::PairState
 NvPairingManager::pair(QString appVersion, QString pin)
 {
    int serverMajorVersion = NvHTTP::parseQuad(appVersion).at(0);
-    qInfo() << "Pairing with server generation:" << serverMajorVersion;
+    qDebug() << "Pairing with server generation: " << serverMajorVersion;

    QCryptographicHash::Algorithm hashAlgo;
    int hashLength;
@@ -196,14 +196,14 @@ NvPairingManager::pair(QString appVersion, QString pin)
    NvHTTP::verifyResponseStatus(getCert);
    if (NvHTTP::getXmlString(getCert, "paired") != "1")
    {
-        qCritical() << "Failed pairing at stage #1";
+        qDebug() << "Failed pairing at stage #1";
        return PairState::FAILED;
    }

    QByteArray serverCert = NvHTTP::getXmlStringFromHex(getCert, "plaincert");
    if (serverCert == nullptr)
    {
-        qCritical() << "Server likely already pairing";
+        qDebug() << "Server likely already pairing";
        m_Http.openConnectionToString(m_Http.m_BaseUrlHttp, "unpair", nullptr, true);
        return PairState::ALREADY_IN_PROGRESS;
    }
@@ -218,7 +218,7 @@ NvPairingManager::pair(QString appVersion, QString pin)
    NvHTTP::verifyResponseStatus(challengeXml);
    if (NvHTTP::getXmlString(challengeXml, "paired") != "1")
    {
-        qCritical() << "Failed pairing at stage #2";
+        qDebug() << "Failed pairing at stage #2";
        m_Http.openConnectionToString(m_Http.m_BaseUrlHttp, "unpair", nullptr, true);
        return PairState::FAILED;
    }
@@ -228,15 +228,13 @@ NvPairingManager::pair(QString appVersion, QString pin)
    QByteArray challengeResponse;
    QByteArray serverResponse(challengeResponseData.data(), hashLength);

-#if (OPENSSL_VERSION_NUMBER < 0x10002000L)
-    ASN1_BIT_STRING *asnSignature = m_Cert->signature;
-#elif (OPENSSL_VERSION_NUMBER < 0x10100000L)
+ #if (OPENSSL_VERSION_NUMBER < 0x10100000L)
    ASN1_BIT_STRING *asnSignature;
-    X509_get0_signature(&asnSignature, NULL, m_Cert);
-#else
+ #else
    const ASN1_BIT_STRING *asnSignature;
+ #endif
+
    X509_get0_signature(&asnSignature, NULL, m_Cert);
-#endif

    challengeResponse.append(challengeResponseData.data() + hashLength, 16);
    challengeResponse.append(reinterpret_cast<char*>(asnSignature->data), asnSignature->length);
@@ -251,7 +249,7 @@ NvPairingManager::pair(QString appVersion, QString pin)
    NvHTTP::verifyResponseStatus(respXml);
    if (NvHTTP::getXmlString(respXml, "paired") != "1")
    {
-        qCritical() << "Failed pairing at stage #3";
+        qDebug() << "Failed pairing at stage #3";
        m_Http.openConnectionToString(m_Http.m_BaseUrlHttp, "unpair", nullptr, true);
        return PairState::FAILED;
    }
@@ -264,7 +262,7 @@ NvPairingManager::pair(QString appVersion, QString pin)
                         serverSignature,
                         serverCert))
    {
-        qCritical() << "MITM detected";
+        qDebug() << "MITM detected";
        m_Http.openConnectionToString(m_Http.m_BaseUrlHttp, "unpair", nullptr, true);
        return PairState::FAILED;
    }
@@ -275,7 +273,7 @@ NvPairingManager::pair(QString appVersion, QString pin)
    expectedResponseData.append(serverSecret);
    if (QCryptographicHash::hash(expectedResponseData, hashAlgo) != serverResponse)
    {
-        qCritical() << "Incorrect PIN";
+        qDebug() << "Incorrect PIN";
        m_Http.openConnectionToString(m_Http.m_BaseUrlHttp, "unpair", nullptr, true);
        return PairState::PIN_WRONG;
    }
@@ -292,7 +290,7 @@ NvPairingManager::pair(QString appVersion, QString pin)
    NvHTTP::verifyResponseStatus(secretRespXml);
    if (NvHTTP::getXmlString(secretRespXml, "paired") != "1")
    {
-        qCritical() << "Failed pairing at stage #4";
+        qDebug() << "Failed pairing at stage #4";
        m_Http.openConnectionToString(m_Http.m_BaseUrlHttp, "unpair", nullptr, true);
        return PairState::FAILED;
    }
@@ -304,7 +302,7 @@ NvPairingManager::pair(QString appVersion, QString pin)
    NvHTTP::verifyResponseStatus(pairChallengeXml);
    if (NvHTTP::getXmlString(pairChallengeXml, "paired") != "1")
    {
-        qCritical() << "Failed pairing at stage #5";
+        qDebug() << "Failed pairing at stage #5";
        m_Http.openConnectionToString(m_Http.m_BaseUrlHttp, "unpair", nullptr, true);
        return PairState::FAILED;
    }
@@ -1,50 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<component type="desktop">
-	<id>com.moonlight_stream.Moonlight</id>
-	<metadata_license>CC0-1.0</metadata_license>
-	<project_license>GPL-3.0+</project_license>
-	<name>Moonlight</name>
-	<summary>Stream games from your NVIDIA GameStream-enabled PC</summary>
-
-	<description>
-		<p>Moonlight can stream games or other applications from a PC with an NVIDIA GeForce GTX 600-series or higher GPU and GeForce Experience installed.</p>
-		<p>GameStream utilizes the NVENC hardware encoder present on NVIDIA GPUs for low-latency streaming at up 4K 60 FPS. Moonlight can utilize VAAPI hardware acceleration for high-performance H.264 and HEVC video decoding with low CPU usage.</p>
-	</description>
-
-	<url type="homepage">https://moonlight-stream.com</url>
-	<url type="bugtracker">https://github.com/moonlight-stream/moonlight-qt/issues</url>
-	<url type="help">https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide</url>
-
-	<screenshots>
-		<screenshot type="default">
-			<image>https://moonlight-stream.com/appstream_resources/moonlight_screenshot_1.png</image>
-		</screenshot>
-		<screenshot>
-			<image>https://moonlight-stream.com/appstream_resources/moonlight_screenshot_2.png</image>
-		</screenshot>
-	</screenshots>
-
-	<releases>
-		<release version="0.0.4a" date="2018-07-30">
-			<description>
-				<p>Initial pre-alpha release for Linux. Please file bugs!</p>
-			</description>
-		</release>
-	</releases>
-
-	<categories>
-		<category>Game</category>
-		<category>Qt</category>
-	</categories>
-
-	<developer_name>Moonlight Game Streaming Team</developer_name>
-	<update_contact>cameron@moonlight-stream.com</update_contact>
-
-	<launchable type="desktop-id">com.moonlight_stream.Moonlight.desktop</launchable>
-
-	<provides>
-		<binary>moonlight</binary>
-	</provides>
-
-	<content_rating type="oars-1.0" />
-</component>
@@ -1,9 +0,0 @@
-[Desktop Entry]
-Name=Moonlight
-Comment=Stream games from your NVIDIA GameStream-enabled PC
-Exec=moonlight
-Icon=moonlight
-Terminal=false
-Type=Application
-Categories=Qt;Game;
-Keywords=nvidia;gamestream;stream;
@@ -12,7 +12,7 @@ GridView {
    id: appGrid
    anchors.fill: parent
    anchors.leftMargin: (parent.width % (cellWidth + anchors.rightMargin)) / 2
-    anchors.topMargin: 20
+    anchors.topMargin: 5
    anchors.rightMargin: 5
    anchors.bottomMargin: 5
    cellWidth: 225; cellHeight: 350;
@@ -72,12 +72,11 @@ GridView {
            color: "white"

            width: parent.width
-            height: 125
+            height: 100
            anchors.top: appIcon.bottom
-            font.pointSize: 22
+            font.pointSize: 26
            horizontalAlignment: Text.AlignHCenter
            wrapMode: Text.Wrap
-            elide: Text.ElideRight
        }

        MouseArea {
@@ -6,7 +6,6 @@ import QtQuick.Layouts 1.3
 import ComputerModel 1.0

 import ComputerManager 1.0
-import StreamingPreferences 1.0

 GridView {
    property ComputerModel computerModel : createModel()
@@ -14,7 +13,7 @@ GridView {
    id: pcGrid
    anchors.fill: parent
    anchors.leftMargin: (parent.width % (cellWidth + anchors.rightMargin)) / 2
-    anchors.topMargin: 20
+    anchors.topMargin: 5
    anchors.rightMargin: 5
    anchors.bottomMargin: 5
    cellWidth: 350; cellHeight: 350;
@@ -26,17 +25,9 @@ GridView {
    // routine to run, but only if we start as invisible
    visible: false

-    StreamingPreferences {
-        id: prefs
-    }
-
    Component.onCompleted: {
        // Setup signals on CM
        ComputerManager.computerAddCompleted.connect(addComplete)
-
-        if (!prefs.hasAnyHardwareAcceleration()) {
-            noHwDecoderDialog.open()
-        }
    }

    onVisibleChanged: {
@@ -142,68 +133,44 @@ GridView {
            horizontalAlignment: Text.AlignHCenter
        }

-        Menu {
-            id: pcContextMenu
-            MenuItem {
-                text: "Wake PC"
-                onTriggered: computerModel.wakeComputer(index)
-            }
-            MenuItem {
-                text: "Delete PC"
-                onTriggered: {
-                    deletePcDialog.pcIndex = index
-                    // get confirmation first, actual closing is called from the dialog
-                    deletePcDialog.open()
-                }
-            }
-        }
-
        MouseArea {
            anchors.fill: parent
-            acceptedButtons: Qt.LeftButton | Qt.RightButton;
            onClicked: {
-                if(mouse.button === Qt.LeftButton) {
-                    if (model.addPc) {
-                        addPcDialog.open()
+                if (model.addPc) {
+                    addPcDialog.open()
+                }
+                else if (model.online) {
+                    if (model.paired) {
+                        // go to game view
+                        var component = Qt.createComponent("AppView.qml")
+                        var appView = component.createObject(stackView)
+                        appView.computerIndex = index
+                        appView.objectName = model.name
+                        stackView.push(appView)
                    }
-                    else if (model.online) {
-                        if (model.paired) {
-                            // go to game view
-                            var component = Qt.createComponent("AppView.qml")
-                            var appView = component.createObject(stackView)
-                            appView.computerIndex = index
-                            appView.objectName = model.name
-                            stackView.push(appView)
+                    else {
+                        if (!model.busy) {
+                            var pin = ("0000" + Math.floor(Math.random() * 10000)).slice(-4)
+
+                            // Stop polling, since pairing may make GFE unresponsive
+                            ComputerManager.stopPollingAsync()
+
+                            // Kick off pairing in the background
+                            computerModel.pairComputer(index, pin)
+
+                            // Display the pairing dialog
+                            pairDialog.pin = pin
+                            pairDialog.open()
                        }
                        else {
-                            if (!model.busy) {
-                                var pin = ("0000" + Math.floor(Math.random() * 10000)).slice(-4)
-
-                                // Stop polling, since pairing may make GFE unresponsive
-                                ComputerManager.stopPollingAsync()
-
-                                // Kick off pairing in the background
-                                computerModel.pairComputer(index, pin)
-
-                                // Display the pairing dialog
-                                pairDialog.pin = pin
-                                pairDialog.open()
-                            }
-                            else {
-                                // cannot pair while something is streaming or attempting to pair
-                                errorDialog.text = "This PC is currently busy. Make sure to quit any running games and try again."
-                                errorDialog.open()
-                            }
+                            // cannot pair while something is streaming or attempting to pair
+                            errorDialog.text = "This PC is currently busy. Make sure to quit any running games and try again."
+                            errorDialog.open()
                        }
-                    } else if(!model.online) {
-                        pcContextMenu.open()
                    }
-
                }
-                else { // right click
-                    if(!model.addPc) { // but only for actual PCs, not the add-pc option
-                        pcContextMenu.open()
-                    }
+                else {
+                    // TODO: Wake on LAN and delete PC options
                }
            }
        }
@@ -217,19 +184,6 @@ GridView {
        standardButtons: StandardButton.Ok
    }

-    MessageDialog {
-        id: noHwDecoderDialog
-        modality:Qt.WindowModal
-        icon: StandardIcon.Warning
-        standardButtons: StandardButton.Ok | StandardButton.Help
-        text: "No functioning hardware accelerated H.264 video decoder was detected by Moonlight. " +
-              "Your streaming performance may be severely degraded in this configuration. " +
-              "Click the Help button for more information on solving this problem."
-        onHelp: {
-            Qt.openUrlExternally("https://github.com/moonlight-stream/moonlight-docs/wiki/Fixing-Hardware-Decoding-Problems");
-        }
-    }
-
    MessageDialog {
        id: pairDialog
        // don't allow edits to the rest of the window while open
@@ -242,22 +196,6 @@ GridView {
        }
    }

-    MessageDialog {
-        id: deletePcDialog
-        // don't allow edits to the rest of the window while open
-        modality:Qt.WindowModal
-        property int pcIndex : -1;
-        text:"Are you sure you want to unpair from this PC?"
-        standardButtons: StandardButton.Yes |StandardButton.No
-        onYes: {
-            console.log("deleting PC pairing for PC at index: " + pcIndex)
-            computerModel.deleteComputer(pcIndex);
-            // hack to remove the child from the gridview
-            model = createModel()
-        }
-    }
-
-
    Dialog {
        id: addPcDialog
        property string label: "Enter the IP address of your GameStream PC"
@@ -16,13 +16,14 @@ ScrollView {
    }

    Column {
-        padding: 10
-        id: settingsColumn1
-        width: settingsPage.width / 2 - padding
+        x: 10
+        y: 10
+        width: settingsPage.width
+        height: 400

        GroupBox {
            id: basicSettingsGroupBox
-            width: (parent.width - 2 * parent.padding)
+            width: (parent.width - 20)
            padding: 12
            title: "<font color=\"skyblue\">Basic Settings</font>"
            font.pointSize: 12
@@ -34,7 +35,7 @@ ScrollView {
                Label {
                    width: parent.width
                    id: resFPStitle
-                    text: qsTr("Resolution and FPS")
+                    text: qsTr("Resolution and FPS target")
                    font.pointSize: 12
                    wrapMode: Text.Wrap                    
                    color: "white"
@@ -43,113 +44,84 @@ ScrollView {
                Label {
                    width: parent.width
                    id: resFPSdesc
-                    text: qsTr("Setting values too high for your PC may cause lag, stuttering, or errors")
+                    text: qsTr("Setting values too high for your device may cause lag or crashes")
                    font.pointSize: 9
                    wrapMode: Text.Wrap
                    color: "white"
                }

-                Row {
-                    spacing: 5
-
-                    ComboBox {
-                        // ignore setting the index at first, and actually set it when the component is loaded
-                        Component.onCompleted: {
-                            // load the saved width/height, and iterate through the ComboBox until a match is found
-                            // and set it to that index.
-                            var saved_width = prefs.width
-                            var saved_height = prefs.height
-                            currentIndex = 0
-                            for (var i = 0; i < resolutionComboBox.count; i++) {
-                                var el_width = parseInt(resolutionListModel.get(i).video_width);
-                                var el_height = parseInt(resolutionListModel.get(i).video_height);
-                                if (saved_width === el_width && saved_height === el_height) {
-                                    currentIndex = i
-                                }
-                            }
-                        }
-
-                        id: resolutionComboBox
-                        font.pointSize: 9
-                        textRole: "text"
-                        model: ListModel {
-                            id: resolutionListModel
-                            ListElement {
-                                text: "720p"
-                                video_width: "1280"
-                                video_height: "720"
-                            }
-                            ListElement {
-                                text: "1080p"
-                                video_width: "1920"
-                                video_height: "1080"
-                            }
-                            ListElement {
-                                text: "1440p"
-                                video_width: "2560"
-                                video_height: "1440"
-                            }
-                            ListElement {
-                                text: "4K"
-                                video_width: "3840"
-                                video_height: "2160"
-                            }
-                        }
-                        // ::onActivated must be used, as it only listens for when the index is changed by a human
-                        onActivated : {
-                            prefs.width = parseInt(resolutionListModel.get(currentIndex).video_width)
-                            prefs.height = parseInt(resolutionListModel.get(currentIndex).video_height)
-
-                            prefs.bitrateKbps = prefs.getDefaultBitrate(prefs.width, prefs.height, prefs.fps);
-                            slider.value = prefs.bitrateKbps
+                ComboBox {
+                    // ignore setting the index at first, and actually set it when the component is loaded
+                    Component.onCompleted: {
+                        // load the saved width/height/fps, and iterate through the ComboBox until a match is found
+                        // set it to that index.
+                        var saved_width = prefs.width
+                        var saved_height = prefs.height
+                        var saved_fps = prefs.fps
+                        currentIndex = 0
+                        for(var i = 0; i < resolutionComboBox.count; i++) {
+                            var el_width = parseInt(resolutionListModel.get(i).video_width);
+                            var el_height = parseInt(resolutionListModel.get(i).video_height);
+                            var el_fps = parseInt(resolutionListModel.get(i).video_fps);
+                          if(saved_width === el_width &&
+                                  saved_height === el_height &&
+                                  saved_fps === el_fps) {
+                              currentIndex = i
+                          }
                        }
                    }

-                    ComboBox {
-                        // ignore setting the index at first, and actually set it when the component is loaded
-                        Component.onCompleted: {
-                            // Get the max supported FPS on this system
-                            var max_fps = prefs.getMaximumStreamingFrameRate();
-
-                            // Use 64 as the cutoff for adding a separate option to
-                            // handle wonky displays that report just over 60 Hz.
-                            if (max_fps > 64) {
-                                fpsListModel.append({"text": max_fps+" FPS", "video_fps": ""+max_fps})
-                            }
-
-                            var saved_fps = prefs.fps
-                            currentIndex = 0
-                            for (var i = 0; i < fpsComboBox.count; i++) {
-                                var el_fps = parseInt(fpsListModel.get(i).video_fps);
-                                if (el_fps === saved_fps) {
-                                    currentIndex = i
-                                }
-                            }
+                    id: resolutionComboBox
+                    width: Math.min(bitrateDesc.implicitWidth, parent.width)
+                    font.pointSize: 9
+                    textRole: "text"
+                    model: ListModel {
+                        id: resolutionListModel
+                        ListElement {
+                            text: "720p 30 FPS"
+                            video_width: "1280"
+                            video_height: "720"
+                            video_fps: "30"
                        }
-
-                        id: fpsComboBox
-                        font.pointSize: 9
-                        textRole: "text"
-                        model: ListModel {
-                            id: fpsListModel
-                            ListElement {
-                                text: "30 FPS"
-                                video_fps: "30"
-                            }
-                            ListElement {
-                                text: "60 FPS"
-                                video_fps: "60"
-                            }
-                            // A higher value may be added at runtime
-                            // based on the attached display refresh rate
+                        ListElement {
+                            text: "720p 60 FPS"
+                            video_width: "1280"
+                            video_height: "720"
+                            video_fps: "60"
                        }
-                        // ::onActivated must be used, as it only listens for when the index is changed by a human
-                        onActivated : {
-                            prefs.fps = parseInt(fpsListModel.get(currentIndex).video_fps)
-
-                            prefs.bitrateKbps = prefs.getDefaultBitrate(prefs.width, prefs.height, prefs.fps);
-                            slider.value = prefs.bitrateKbps
+                        ListElement {
+                            text: "1080p 30 FPS"
+                            video_width: "1920"
+                            video_height: "1080"
+                            video_fps: "30"
                        }
+                        ListElement {
+                            text: "1080p 60 FPS"
+                            video_width: "1920"
+                            video_height: "1080"
+                            video_fps: "60"
+                        }
+                        ListElement {
+                            text: "4K 30 FPS"
+                            video_width: "3840"
+                            video_height: "2160"
+                            video_fps: "30"
+                        }
+                        ListElement {
+                            text: "4K 60 FPS"
+                            video_width: "3840"
+                            video_height: "2160"
+                            video_fps: "60"
+                        }
+                    }
+                    // ::onActivated must be used, as it only listens for when the index is changed by a human
+                    onActivated : {
+                        prefs.width = parseInt(resolutionListModel.get(currentIndex).video_width)
+                        prefs.height = parseInt(resolutionListModel.get(currentIndex).video_height)
+                        prefs.fps = parseInt(resolutionListModel.get(currentIndex).video_fps)
+
+                        prefs.bitrateKbps = prefs.getDefaultBitrate(prefs.width, prefs.height, prefs.fps);
+                        slider.value = prefs.bitrateKbps
                    }
                }

@@ -179,7 +151,7 @@ ScrollView {

                    stepSize: 500
                    from : 500
-                    to: 150000
+                    to: 100000

                    snapMode: "SnapOnRelease"
                    width: Math.min(bitrateDesc.implicitWidth, parent.width)
@@ -205,7 +177,7 @@ ScrollView {
        GroupBox {

            id: audioSettingsGroupBox
-            width: (parent.width - 2 * parent.padding)
+            width: (parent.width - 20)
            padding: 12
            title: "<font color=\"skyblue\">Audio Settings</font>"
            font.pointSize: 12
@@ -214,66 +186,24 @@ ScrollView {
                anchors.fill: parent
                spacing: 5

-                Label {
-                    width: parent.width
-                    id: resAudioTitle
-                    text: qsTr("Audio configuration")
-                    font.pointSize: 12
-                    wrapMode: Text.Wrap
-                    color: "white"
-                }
+                CheckBox {
+                    id: surroundSoundCheck
+                    text: "<font color=\"white\">Enable 5.1 surround sound</font>"
+                    font.pointSize:  12

-                ComboBox {
-                    // ignore setting the index at first, and actually set it when the component is loaded
-                    Component.onCompleted: {
-                        var saved_audio = prefs.audioConfig
-                        currentIndex = 0
-                        for(var i = 0; i < audioListModel.count; i++) {
-                            var el_audio= audioListModel.get(i).val;
-                          if(saved_audio === el_audio) {
-                              currentIndex = i
-                          }
-                        }
-                    }
+                    // the backend actually supports auto/stereo/5.1.  We'll expose stereo/5.1
+                    checked: prefs.audioConfig === StreamingPreferences.AC_FORCE_SURROUND

-                    id: audioComboBox
-                    width: Math.min(bitrateDesc.implicitWidth, parent.width)
-                    font.pointSize: 9
-                    textRole: "text"
-                    model: ListModel {
-                        id: audioListModel
-                        ListElement {
-                            text: "Autodetect"
-                            val: StreamingPreferences.AC_AUTO
-                        }
-                        ListElement {
-                            text: "Stereo"
-                            val: StreamingPreferences.AC_FORCE_STEREO
-                        }
-                        ListElement {
-                            text: "5.1 surround sound"
-                            val: StreamingPreferences.AC_FORCE_SURROUND
-                        }
-                    }
-                    // ::onActivated must be used, as it only listens for when the index is changed by a human
-                    onActivated : {
-                        prefs.audioConfig = audioListModel.get(currentIndex).val
+                    onCheckedChanged: {
+                        prefs.audioConfig = checked ? StreamingPreferences.AC_FORCE_SURROUND : StreamingPreferences.AC_FORCE_STEREO
                    }
                }
-
            }
        }
-    }
-
-    Column {
-        padding: 10
-        anchors.left: settingsColumn1.right
-        id: settingsColumn2
-        width: settingsPage.width / 2 - padding

        GroupBox {
            id: gamepadSettingsGroupBox
-            width: (parent.width - parent.padding)
+            width: (parent.width - 20)
            padding: 12
            title: "<font color=\"skyblue\">Gamepad Settings</font>"
            font.pointSize: 12
@@ -291,12 +221,38 @@ ScrollView {
                        prefs.multiController = checked
                    }
                }
+                CheckBox {
+                    id: mouseEmulationCheck
+                    text: "<font color=\"white\">Mouse emulation via gamepad</font>"
+                    font.pointSize:  12
+                    // TODO: make this actually do anything
+                }
+            }
+        }
+
+        GroupBox {
+            id: onScreenControlsGroupBox
+            width: (parent.width - 20)
+            padding: 12
+            title: "<font color=\"skyblue\">On-screen Controls Settings</font>"
+            font.pointSize: 12
+
+            Column {
+                anchors.fill: parent
+                spacing: 5
+
+                CheckBox {
+                    id: onScreenControlsCheck
+                    text: "<font color=\"white\">Show on-screen controls</font>"
+                    font.pointSize:  12
+                    // TODO: make this actually do anything
+                }
            }
        }

        GroupBox {
            id: hostSettingsGroupBox
-            width: (parent.width - parent.padding)
+            width: (parent.width - 20)
            padding: 12
            title: "<font color=\"skyblue\">Host Settings</font>"
            font.pointSize: 12
@@ -329,7 +285,7 @@ ScrollView {

        GroupBox {
            id: advancedSettingsGroupBox
-            width: (parent.width - parent.padding)
+            width: (parent.width - 20)
            padding: 12
            title: "<font color=\"skyblue\">Advanced Settings</font>"
            font.pointSize: 12
@@ -338,107 +294,11 @@ ScrollView {
                anchors.fill: parent
                spacing: 5

-                Label {
-                    width: parent.width
-                    id: resVDSTitle
-                    text: qsTr("Video decoder")
-                    font.pointSize: 12
-                    wrapMode: Text.Wrap
-                    color: "white"
+                CheckBox {
+                    id: neverDropFramesCheck
+                    text: "<font color=\"white\">Never drop frames</font>"
+                    font.pointSize:  12
                }
-
-                ComboBox {
-                    // ignore setting the index at first, and actually set it when the component is loaded
-                    Component.onCompleted: {
-                        var saved_vds = prefs.videoDecoderSelection
-                        currentIndex = 0
-                        for(var i = 0; i < decoderListModel.count; i++) {
-                            var el_vds = decoderListModel.get(i).val;
-                          if(saved_vds === el_vds) {
-                              currentIndex = i
-                          }
-                        }
-                    }
-
-                    id: decoderComboBox
-                    width: Math.min(bitrateDesc.implicitWidth, parent.width)
-                    font.pointSize: 9
-                    textRole: "text"
-                    model: ListModel {
-                        id: decoderListModel
-                        ListElement {
-                            text: "Automatic (Recommended)"
-                            val: StreamingPreferences.VDS_AUTO
-                        }
-                        ListElement {
-                            text: "Force software decoding"
-                            val: StreamingPreferences.VDS_FORCE_SOFTWARE
-                        }
-                        ListElement {
-                            text: "Force hardware decoding"
-                            val: StreamingPreferences.VDS_FORCE_HARDWARE
-                        }
-                    }
-                    // ::onActivated must be used, as it only listens for when the index is changed by a human
-                    onActivated : {
-                        prefs.videoDecoderSelection = decoderListModel.get(currentIndex).val
-                    }
-                }
-
-                Label {
-                    width: parent.width
-                    id: resVCCTitle
-                    text: qsTr("Video codec")
-                    font.pointSize: 12
-                    wrapMode: Text.Wrap
-                    color: "white"
-                }
-
-                ComboBox {
-                    // ignore setting the index at first, and actually set it when the component is loaded
-                    Component.onCompleted: {
-                        var saved_vcc = prefs.videoCodecConfig
-                        currentIndex = 0
-                        for(var i = 0; i < codecListModel.count; i++) {
-                            var el_vcc = codecListModel.get(i).val;
-                          if(saved_vcc === el_vcc) {
-                              currentIndex = i
-                          }
-                        }
-                    }
-
-                    id: codecComboBox
-                    width: Math.min(bitrateDesc.implicitWidth, parent.width)
-                    font.pointSize: 9
-                    textRole: "text"
-                    model: ListModel {
-                        id: codecListModel
-                        ListElement {
-                            text: "Automatic (Recommended)"
-                            val: StreamingPreferences.VCC_AUTO
-                        }
-                        ListElement {
-                            text: "Force H.264"
-                            val: StreamingPreferences.VCC_FORCE_H264
-                        }
-                        ListElement {
-                            text: "Force HEVC"
-                            val: StreamingPreferences.VCC_FORCE_HEVC
-                        }
-                        // HDR seems to be broken in GFE 3.14.1, and even when that's fixed
-                        // we'll probably need to gate this feature on OS support in our
-                        // renderers.
-                        /* ListElement {
-                            text: "Force HEVC HDR"
-                            val: StreamingPreferences.VCC_FORCE_HEVC_HDR
-                        } */
-                    }
-                    // ::onActivated must be used, as it only listens for when the index is changed by a human
-                    onActivated : {
-                        prefs.videoCodecConfig = codecListModel.get(currentIndex).val
-                    }
-                }
-
            }
        }
    }
@@ -123,15 +123,10 @@ void AppModel::handleBoxArtLoaded(NvComputer* computer, NvApp app, QUrl /* image
    Q_ASSERT(computer == m_Computer);

    int index = m_Apps.indexOf(app);
+    Q_ASSERT(index >= 0);

-    // Make sure we're not delivering a callback to an app that's already been removed
-    if (index >= 0) {
-        // Let our view know the box art data has changed for this app
-        emit dataChanged(createIndex(index, 0),
-                         createIndex(index, 0),
-                         QVector<int>() << BoxArtRole);
-    }
-    else {
-        qWarning() << "App not found for box art callback:" << app.name;
-    }
+    // Let our view know the box art data has changed for this app
+    emit dataChanged(createIndex(index, 0),
+                     createIndex(index, 0),
+                     QVector<int>() << BoxArtRole);
 }
@@ -80,9 +80,6 @@ ApplicationWindow {
            }

            ToolButton {
-                // TODO: Implement gamepad mapping then unhide this button
-                visible: false
-
                icon.source: "qrc:/res/ic_videogame_asset_white_48px.svg"
                onClicked: navigateTo("qrc:/gui/GamepadMapper.qml", "Gamepad Mapping")

@@ -2,8 +2,6 @@
 #include <QQmlApplicationEngine>
 #include <QIcon>
 #include <QQuickStyle>
-#include <QMutex>
-#include <QtDebug>

 // Don't let SDL hook our main function, since Qt is already
 // doing the same thing. This needs to be before any headers
@@ -16,134 +14,8 @@
 #include "streaming/session.hpp"
 #include "settings/streamingpreferences.h"

-#if !defined(QT_DEBUG) && defined(Q_OS_WIN32)
-// Log to file for release Windows builds
-#define USE_CUSTOM_LOGGER
-#define LOG_TO_FILE
-#elif defined(Q_OS_UNIX) && !defined(Q_OS_DARWIN)
-// Use stdout logger on all Linux/BSD builds
-#define USE_CUSTOM_LOGGER
-#elif !defined(QT_DEBUG) && defined(Q_OS_DARWIN)
-// Log to file for release Mac builds
-#define USE_CUSTOM_LOGGER
-#define LOG_TO_FILE
-#else
-// For debug Windows and Mac builds, use default logger
-#endif
-
-#ifdef USE_CUSTOM_LOGGER
-static QTime s_LoggerTime;
-static QTextStream s_LoggerStream(stdout);
-static QMutex s_LoggerLock;
-#ifdef LOG_TO_FILE
-#define MAX_LOG_LINES 10000
-static int s_LogLinesWritten = 0;
-static bool s_LogLimitReached = false;
-static QFile* s_LoggerFile;
-#endif
-
-void logToLoggerStream(QString& message)
-{
-    QMutexLocker lock(&s_LoggerLock);
-
-#ifdef LOG_TO_FILE
-    if (s_LogLimitReached) {
-        return;
-    }
-    else if (s_LogLinesWritten == MAX_LOG_LINES) {
-        s_LoggerStream << "Log size limit reached!" << endl;
-        s_LogLimitReached = true;
-        return;
-    }
-    else {
-        s_LogLinesWritten++;
-    }
-#endif
-
-    s_LoggerStream << message << endl;
-}
-
-void sdlLogToDiskHandler(void*, int category, SDL_LogPriority priority, const char* message)
-{
-    QString priorityTxt;
-
-    switch (priority) {
-    case SDL_LOG_PRIORITY_VERBOSE:
-        priorityTxt = "Verbose";
-        break;
-    case SDL_LOG_PRIORITY_DEBUG:
-        priorityTxt = "Debug";
-        break;
-    case SDL_LOG_PRIORITY_INFO:
-        priorityTxt = "Info";
-        break;
-    case SDL_LOG_PRIORITY_WARN:
-        priorityTxt = "Warn";
-        break;
-    case SDL_LOG_PRIORITY_ERROR:
-        priorityTxt = "Error";
-        break;
-    case SDL_LOG_PRIORITY_CRITICAL:
-        priorityTxt = "Critical";
-        break;
-    default:
-        priorityTxt = "Unknown";
-        break;
-    }
-
-    QTime logTime = QTime::fromMSecsSinceStartOfDay(s_LoggerTime.elapsed());
-    QString txt = QString("%1 - SDL %2 (%3): %4").arg(logTime.toString()).arg(priorityTxt).arg(category).arg(message);
-
-    logToLoggerStream(txt);
-}
-
-void qtLogToDiskHandler(QtMsgType type, const QMessageLogContext&, const QString& msg)
-{
-    QString typeTxt;
-
-    switch (type) {
-    case QtDebugMsg:
-        typeTxt = "Debug";
-        break;
-    case QtInfoMsg:
-        typeTxt = "Info";
-        break;
-    case QtWarningMsg:
-        typeTxt = "Warning";
-        break;
-    case QtCriticalMsg:
-        typeTxt = "Critical";
-        break;
-    case QtFatalMsg:
-        typeTxt = "Fatal";
-        break;
-    }
-
-    QTime logTime = QTime::fromMSecsSinceStartOfDay(s_LoggerTime.elapsed());
-    QString txt = QString("%1 - Qt %2: %3").arg(logTime.toString()).arg(typeTxt).arg(msg);
-
-    logToLoggerStream(txt);
-}
-
-#endif
-
 int main(int argc, char *argv[])
 {
-#ifdef USE_CUSTOM_LOGGER
-#ifdef LOG_TO_FILE
-    QDir tempDir(QDir::tempPath());
-    s_LoggerFile = new QFile(tempDir.filePath(QString("Moonlight-%1.log").arg(QDateTime::currentSecsSinceEpoch())));
-    if (s_LoggerFile->open(QIODevice::WriteOnly)) {
-        qInfo() << "Redirecting log output to " << s_LoggerFile->fileName();
-        s_LoggerStream.setDevice(s_LoggerFile);
-    }
-#endif
-
-    s_LoggerTime.start();
-    qInstallMessageHandler(qtLogToDiskHandler);
-    SDL_LogSetOutputFunction(sdlLogToDiskHandler, nullptr);
-#endif
-
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

    // This avoids using the default keychain for SSL, which may cause
@@ -181,8 +53,12 @@ int main(int argc, char *argv[])
    if (engine.rootObjects().isEmpty())
        return -1;

+    // Ensure that SDL is always initialized since we may need to use it
+    // for non-streaming purposes (like checking on audio devices)
    SDL_SetMainReady();
-    if (SDL_Init(0) != 0) {
+    if (SDL_Init(SDL_INIT_VIDEO |
+                 SDL_INIT_AUDIO |
+                 SDL_INIT_GAMECONTROLLER) != 0) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                     "SDL_Init() failed: %s",
                     SDL_GetError());
@@ -1,69 +1,23 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   id="svg3761"
-   viewBox="0 0 680 680"
-   height="680"
-   width="680"
-   version="1.0">
-  <metadata
-     id="metadata3767">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <defs
-     id="defs3765" />
-  <g
-     id="g3759"
-     transform="translate(-135,491) scale(0.100000,-0.100000)">
-    <circle
-       id="circle3741"
-       fill="#565C64"
-       r="3400"
-       cy="1505"
-       cx="4755" />
-    <path
-       id="path3743"
-       style="fill:#ffffff"
-       d="M4550 4230 c-582 -48 -1123 -271 -1568 -646 l-84 -70 869 -869 c477 -477 871 -868 876 -868 4 0 6 552 5 1228 l-3 1227 -25 1 c-14 0 -45 -1 -70 -3z" />
-    <path
-       id="path3745"
-       style="fill:#ffffff"
-       d="M4867 4230 c-10 -9 -9 -2453 1 -2453 4 0 398 391 875 868 l869 869 -84 70 c-344 290 -749 492 -1178 587 -166 36 -469 74 -483 59z" />
-    <path
-       id="path3747"
-       style="fill:#ffffff"
-       d="M2673 3275 c-241 -285 -412 -595 -526 -953 -63 -196 -111 -458 -119 -640 l-3 -70 1228 -3 c675 -1 1227 1 1227 5 0 5 -391 399 -868 876 l-869 869 -70 -84z" />
-    <path
-       id="path3749"
-       style="fill:#ffffff"
-       d="M5898 2490 c-478 -477 -868 -871 -868 -876 0 -4 552 -6 1228 -5 l1227 3 -3 70 c-14 326 -124 729 -287 1055 -91 182 -259 430 -387 573 l-43 48 -867 -868z" />
-    <path
-       id="path3751"
-       style="fill:#ffffff"
-       d="M2026 1388 c-7 -11 10 -198 30 -321 76 -486 291 -952 617 -1338 l70 -84 869 869 c477 477 868 871 868 875 0 11 -2448 10 -2454 -1z" />
-    <path
-       id="path3753"
-       style="fill:#ffffff"
-       d="M5030 1390 c0 -5 391 -399 868 -876 l869 -869 70 84 c241 285 412 595 526 953 63 196 111 458 119 640 l3 70 -1227 3 c-676 1 -1228 -1 -1228 -5z" />
-    <path
-       id="path3755"
-       style="fill:#ffffff"
-       d="M3767 359 l-869 -869 84 -70 c285 -241 595 -412 953 -526 196 -63 458 -111 640 -119 l70 -3 3 1228 c1 675 -1 1227 -5 1227 -5 0 -399 -391 -876 -868z" />
-    <path
-       id="path3757"
-       style="fill:#ffffff"
-       d="M4862 0 l3 -1228 70 3 c182 8 444 56 640 119 358 114 668 285 953 526 l84 70 -869 869 c-477 477 -871 868 -876 868 -4 0 -6 -552 -5 -1227z" />
+<svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" version="1.0">
+  <defs>
+    <filter id="f1" y="-40%" width="120%" height="220%">
+      <feOffset xmlns="http://www.w3.org/2000/svg" result="offOut" in="SourceAlpha" dy="-100"/>
+      <feGaussianBlur result="blurOut" in="offOut" stdDeviation="200"/>
+      <feBlend in="SourceGraphic" in2="blurOut" mode="normal"/>
+    </filter>
+  </defs>
+  <!-- -105, 521 are within 0.5 pixel-perfect -->
+  <!-- offsetting more to show shadow -->
+  <g transform="translate(-95,530) scale(0.100000,-0.100000)" filter="url(#f1)">
+    <circle cx="4755" cy="1505" r="3700" fill="#565C64">
+     </circle>
+    <path d="M4550 4230 c-582 -48 -1123 -271 -1568 -646 l-84 -70 869 -869 c477 -477 871 -868 876 -868 4 0 6 552 5 1228 l-3 1227 -25 1 c-14 0 -45 -1 -70 -3z" style="fill:#ffffff"/>
+    <path xmlns="http://www.w3.org/2000/svg" d="M4867 4230 c-10 -9 -9 -2453 1 -2453 4 0 398 391 875 868 l869 869 -84 70 c-344 290 -749 492 -1178 587 -166 36 -469 74 -483 59z" style="fill:#ffffff"/>
+    <path d="M2673 3275 c-241 -285 -412 -595 -526 -953 -63 -196 -111 -458 -119 -640 l-3 -70 1228 -3 c675 -1 1227 1 1227 5 0 5 -391 399 -868 876 l-869 869 -70 -84z" style="fill:#ffffff"/>
+    <path d="M5898 2490 c-478 -477 -868 -871 -868 -876 0 -4 552 -6 1228 -5 l1227 3 -3 70 c-14 326 -124 729 -287 1055 -91 182 -259 430 -387 573 l-43 48 -867 -868z" style="fill:#ffffff"/>
+    <path d="M2026 1388 c-7 -11 10 -198 30 -321 76 -486 291 -952 617 -1338 l70 -84 869 869 c477 477 868 871 868 875 0 11 -2448 10 -2454 -1z" style="fill:#ffffff"/>
+    <path d="M5030 1390 c0 -5 391 -399 868 -876 l869 -869 70 84 c241 285 412 595 526 953 63 196 111 458 119 640 l3 70 -1227 3 c-676 1 -1228 -1 -1228 -5z" style="fill:#ffffff"/>
+    <path d="M3767 359 l-869 -869 84 -70 c285 -241 595 -412 953 -526 196 -63 458 -111 640 -119 l70 -3 3 1228 c1 675 -1 1227 -5 1227 -5 0 -399 -391 -876 -868z" style="fill:#ffffff"/>
+    <path d="M4862 0 l3 -1228 70 3 c182 8 444 56 640 119 358 114 668 285 953 526 l84 70 -869 869 c-477 477 -871 868 -876 868 -4 0 -6 -552 -5 -1227z" style="fill:#ffffff"/>
  </g>
-</svg>
+</svg>
@@ -1,5 +1,4 @@
 #include "streamingpreferences.h"
-#include "streaming/session.hpp"

 #include <QSettings>

@@ -58,53 +57,24 @@ void StreamingPreferences::save()
    settings.setValue(SER_VIDEODEC, static_cast<int>(videoDecoderSelection));
 }

-bool StreamingPreferences::hasAnyHardwareAcceleration()
-{
-    // Always use VDS_AUTO to avoid spamming the user with warnings
-    // if they've forced software decoding.
-    return Session::isHardwareDecodeAvailable(VDS_AUTO,
-                                              VIDEO_FORMAT_H264,
-                                              1920, 1080, 60);
-}
-
-int StreamingPreferences::getMaximumStreamingFrameRate()
-{
-    // Never let the maximum drop below 60 FPS
-    int maxFrameRate = 60;
-
-    if (SDL_InitSubSystem(SDL_INIT_VIDEO) != 0) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SDL_InitSubSystem(SDL_INIT_VIDEO) failed: %s",
-                     SDL_GetError());
-        return maxFrameRate;
-    }
-
-    for (int i = 0; i < SDL_GetNumVideoDisplays(); i++) {
-        SDL_DisplayMode mode;
-        if (SDL_GetCurrentDisplayMode(i, &mode) == 0) {
-            // Cap the frame rate at 90 FPS, since I can't seem to get
-            // much more out of GFE even with the game rendering at > 300 FPS.
-            maxFrameRate = qMax(maxFrameRate, qMin(90, mode.refresh_rate));
-        }
-    }
-
-    SDL_QuitSubSystem(SDL_INIT_VIDEO);
-
-    return maxFrameRate;
-}
-
 int StreamingPreferences::getDefaultBitrate(int width, int height, int fps)
 {
-    if (width * height <= 1280 * 720) {
-        return static_cast<int>(5000 * (fps / 30.0));
+    if (width * height * fps <=  1280 * 720 * 30) {
+        return 5000;
    }
-    else if (width * height <= 1920 * 1080) {
-        return static_cast<int>(10000 * (fps / 30.0));
+    else if (width * height * fps <= 1280 * 720 * 60) {
+        return 10000;
    }
-    else if (width * height <= 2560 * 1440) {
-        return static_cast<int>(20000 * (fps / 30.0));
+    else if (width * height * fps <= 1920 * 1080 * 30) {
+        return 10000;
    }
-    else /* if (width * height <= 3840 * 2160) */ {
-        return static_cast<int>(40000 * (fps / 30.0));
+    else if (width * height * fps <= 1920 * 1080 * 60) {
+        return 20000;
+    }
+    else if (width * height * fps <= 3840 * 2160 * 30) {
+        return 40000;
+    }
+    else /* if (width * height * fps <= 3840 * 2160 * 60) */ {
+        return 80000;
    }
 }
@@ -14,10 +14,6 @@ public:

    Q_INVOKABLE void save();

-    Q_INVOKABLE static bool hasAnyHardwareAcceleration();
-
-    Q_INVOKABLE static int getMaximumStreamingFrameRate();
-
    void reload();

    enum AudioConfig
@@ -23,14 +23,6 @@ int Session::sdlDetermineAudioConfiguration()
 {
    SDL_AudioSpec want, have;
    SDL_AudioDeviceID dev;
-    int ret;
-
-    if (SDL_InitSubSystem(SDL_INIT_AUDIO) != 0) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SDL_InitSubSystem(SDL_INIT_AUDIO) failed: %s",
-                     SDL_GetError());
-        return AUDIO_CONFIGURATION_STEREO;
-    }

    SDL_zero(want);
    want.freq = 48000;
@@ -46,8 +38,7 @@ int Session::sdlDetermineAudioConfiguration()
                     "Failed to open audio device");
        // We'll probably have issues during audio stream init, but we'll
        // try anyway
-        ret = AUDIO_CONFIGURATION_STEREO;
-        goto Exit;
+        return AUDIO_CONFIGURATION_STEREO;
    }

    SDL_CloseAudioDevice(dev);
@@ -59,15 +50,11 @@ int Session::sdlDetermineAudioConfiguration()
        // We don't support quadraphonic or 7.1 surround, but SDL
        // should be able to downmix or upmix better from 5.1 than
        // from stereo, so use 5.1 in non-stereo cases.
-        ret = AUDIO_CONFIGURATION_51_SURROUND;
+        return AUDIO_CONFIGURATION_51_SURROUND;
    }
    else {
-        ret = AUDIO_CONFIGURATION_STEREO;
+        return AUDIO_CONFIGURATION_STEREO;
    }
-
-Exit:
-    SDL_QuitSubSystem(SDL_INIT_AUDIO);
-    return ret;
 }

 int Session::sdlAudioInit(int /* audioConfiguration */,
@@ -77,14 +64,6 @@ int Session::sdlAudioInit(int /* audioConfiguration */,
    SDL_AudioSpec want, have;
    int error;

-    SDL_assert(!SDL_WasInit(SDL_INIT_AUDIO));
-    if (SDL_InitSubSystem(SDL_INIT_AUDIO) != 0) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SDL_InitSubSystem(SDL_INIT_AUDIO) failed: %s",
-                     SDL_GetError());
-        return AUDIO_CONFIGURATION_STEREO;
-    }
-
    SDL_zero(want);
    want.freq = opusConfig->sampleRate;
    want.format = AUDIO_S16;
@@ -101,7 +80,6 @@ int Session::sdlAudioInit(int /* audioConfiguration */,
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                     "Failed to open audio device: %s",
                     SDL_GetError());
-        SDL_QuitSubSystem(SDL_INIT_AUDIO);
        return -1;
    }

@@ -117,7 +95,6 @@ int Session::sdlAudioInit(int /* audioConfiguration */,
                     error);
        SDL_CloseAudioDevice(s_AudioDevice);
        s_AudioDevice = 0;
-        SDL_QuitSubSystem(SDL_INIT_AUDIO);
        return -2;
    }

@@ -127,7 +104,7 @@ int Session::sdlAudioInit(int /* audioConfiguration */,
    // pending data count. Get a baseline so we
    // can exclude that data.
    s_BaselinePendingData = 0;
-#ifdef Q_OS_WIN32
+#ifdef _WIN32
    for (int i = 0; i < 100; i++) {
        s_BaselinePendingData = qMax(s_BaselinePendingData, SDL_GetQueuedAudioSize(s_AudioDevice));
        SDL_Delay(10);
@@ -142,10 +119,6 @@ int Session::sdlAudioInit(int /* audioConfiguration */,
    s_SampleIndex = 0;
    s_PendingDrops = s_PendingHardDrops = 0;

-    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                "Audio stream has %d channels",
-                opusConfig->channelCount);
-
    return 0;
 }

@@ -167,10 +140,7 @@ void Session::sdlAudioCleanup()
    s_AudioDevice = 0;

    opus_multistream_decoder_destroy(s_OpusDecoder);
-    s_OpusDecoder = nullptr;
-
-    SDL_QuitSubSystem(SDL_INIT_AUDIO);
-    SDL_assert(!SDL_WasInit(SDL_INIT_AUDIO));
+    s_OpusDecoder = NULL;
 }

 void Session::sdlAudioDecodeAndPlaySample(char* sampleData, int sampleLength)
@@ -9,7 +9,7 @@
 #ifndef VK_F1
 #define VK_F1 0x70
 #define VK_F13 0x7C
-#define VK_NUMPAD0 0x60
+#define VK_NUMPAD1 0x61
 #endif

 const int SdlInputHandler::k_ButtonMap[] = {
@@ -23,15 +23,6 @@ const int SdlInputHandler::k_ButtonMap[] = {
 SdlInputHandler::SdlInputHandler(bool multiController)
    : m_MultiController(multiController)
 {
-    // We need to reinit this each time, since you only get
-    // an initial set of gamepad arrival events once per init.
-    SDL_assert(!SDL_WasInit(SDL_INIT_GAMECONTROLLER));
-    if (SDL_InitSubSystem(SDL_INIT_GAMECONTROLLER) != 0) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SDL_InitSubSystem(SDL_INIT_GAMECONTROLLER) failed: %s",
-                     SDL_GetError());
-    }
-
    if (!m_MultiController) {
        // Player 1 is always present in non-MC mode
        m_GamepadMask = 0x1;
@@ -47,9 +38,6 @@ SdlInputHandler::~SdlInputHandler()
            SDL_GameControllerClose(m_GamepadState[i].controller);
        }
    }
-
-    SDL_QuitSubSystem(SDL_INIT_GAMECONTROLLER);
-    SDL_assert(!SDL_WasInit(SDL_INIT_GAMECONTROLLER));
 }

 void SdlInputHandler::handleKeyEvent(SDL_KeyboardEvent* event)
@@ -63,26 +51,26 @@ void SdlInputHandler::handleKeyEvent(SDL_KeyboardEvent* event)
            (event->keysym.mod & KMOD_ALT) &&
            (event->keysym.mod & KMOD_SHIFT)) {

-        // Force raise all keys in the combo to avoid
-        // leaving them down after disconnecting
-        LiSendKeyboardEvent(0xA0, KEY_ACTION_UP, 0);
-        LiSendKeyboardEvent(0xA1, KEY_ACTION_UP, 0);
-        LiSendKeyboardEvent(0xA2, KEY_ACTION_UP, 0);
-        LiSendKeyboardEvent(0xA3, KEY_ACTION_UP, 0);
-        LiSendKeyboardEvent(0xA4, KEY_ACTION_UP, 0);
-        LiSendKeyboardEvent(0xA5, KEY_ACTION_UP, 0);
-
        // Check for quit combo (Ctrl+Alt+Shift+Q)
        if (event->keysym.sym == SDLK_q) {
            SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
                        "Detected quit key combo");

-            // Uncapture the mouse to avoid processing any
-            // further keyboard input
-            SDL_SetRelativeMouseMode(SDL_FALSE);
+            // Force raise all keys in the combo to avoid
+            // leaving them down after disconnecting
+            LiSendKeyboardEvent(0xA0, KEY_ACTION_UP, 0);
+            LiSendKeyboardEvent(0xA1, KEY_ACTION_UP, 0);
+            LiSendKeyboardEvent(0xA2, KEY_ACTION_UP, 0);
+            LiSendKeyboardEvent(0xA3, KEY_ACTION_UP, 0);
+            LiSendKeyboardEvent(0xA4, KEY_ACTION_UP, 0);
+            LiSendKeyboardEvent(0xA5, KEY_ACTION_UP, 0);

            SDL_Event event;

+            // Drain the event queue of any additional input
+            // that might be processed before our quit message.
+            while (SDL_PollEvent(&event));
+
            // Push a quit event to the main loop
            event.type = SDL_QUIT;
            event.quit.timestamp = SDL_GetTicks();
@@ -100,7 +88,12 @@ void SdlInputHandler::handleKeyEvent(SDL_KeyboardEvent* event)
        else if (event->keysym.sym == SDLK_x) {
            SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
                        "Detected full-screen toggle combo");
-            Session::s_ActiveSession->toggleFullscreen();
+            if (SDL_GetWindowFlags(Session::s_ActiveSession->m_Window) & SDL_WINDOW_FULLSCREEN) {
+                SDL_SetWindowFullscreen(Session::s_ActiveSession->m_Window, 0);
+            }
+            else {
+                SDL_SetWindowFullscreen(Session::s_ActiveSession->m_Window, SDL_WINDOW_FULLSCREEN);
+            }
            return;
        }
    }
@@ -122,199 +115,195 @@ void SdlInputHandler::handleKeyEvent(SDL_KeyboardEvent* event)
        modifiers |= MODIFIER_SHIFT;
    }

-    // Set keycode. We explicitly use scancode here because GFE will try to correct
-    // for AZERTY layouts on the host but it depends on receiving VK_ values matching
-    // a QWERTY layout to work.
-    if (event->keysym.scancode >= SDL_SCANCODE_1 && event->keysym.scancode <= SDL_SCANCODE_9) {
-        // SDL defines SDL_SCANCODE_0 > SDL_SCANCODE_9, so we need to handle that manually
-        keyCode = (event->keysym.scancode - SDL_SCANCODE_1) + VK_0 + 1;
+    // Set keycode
+    if (event->keysym.sym >= SDLK_0 && event->keysym.sym <= SDLK_9) {
+        keyCode = (event->keysym.sym - SDLK_0) + VK_0;
    }
-    else if (event->keysym.scancode >= SDL_SCANCODE_A && event->keysym.scancode <= SDL_SCANCODE_Z) {
-        keyCode = (event->keysym.scancode - SDL_SCANCODE_A) + VK_A;
+    else if (event->keysym.sym >= SDLK_a && event->keysym.sym <= SDLK_z) {
+        keyCode = (event->keysym.sym - SDLK_a) + VK_A;
    }
-    else if (event->keysym.scancode >= SDL_SCANCODE_F1 && event->keysym.scancode <= SDL_SCANCODE_F12) {
-        keyCode = (event->keysym.scancode - SDL_SCANCODE_F1) + VK_F1;
+    else if (event->keysym.sym >= SDLK_F1 && event->keysym.sym <= SDLK_F12) {
+        keyCode = (event->keysym.sym - SDLK_F1) + VK_F1;
    }
-    else if (event->keysym.scancode >= SDL_SCANCODE_F13 && event->keysym.scancode <= SDL_SCANCODE_F24) {
-        keyCode = (event->keysym.scancode - SDL_SCANCODE_F13) + VK_F13;
+    else if (event->keysym.sym >= SDLK_F13 && event->keysym.sym <= SDLK_F24) {
+        keyCode = (event->keysym.sym - SDLK_F13) + VK_F13;
    }
-    else if (event->keysym.scancode >= SDL_SCANCODE_KP_1 && event->keysym.scancode <= SDL_SCANCODE_KP_9) {
-        // SDL defines SDL_SCANCODE_KP_0 > SDL_SCANCODE_KP_9, so we need to handle that manually
-        keyCode = (event->keysym.scancode - SDL_SCANCODE_KP_1) + VK_NUMPAD0 + 1;
+    else if (event->keysym.sym >= SDLK_KP_1 && event->keysym.sym <= SDLK_KP_9) {
+        // SDL defines SDLK_KP_0 > SDLK_KP_9, so we need to handle that manually
+        keyCode = (event->keysym.sym - SDLK_KP_1) + VK_NUMPAD1;
    }
    else {
-        switch (event->keysym.scancode) {
-            case SDL_SCANCODE_BACKSPACE:
+        switch (event->keysym.sym) {
+            case SDLK_BACKSPACE:
                keyCode = 0x08;
                break;
-            case SDL_SCANCODE_TAB:
+            case SDLK_TAB:
                keyCode = 0x09;
                break;
-            case SDL_SCANCODE_CLEAR:
+            case SDLK_CLEAR:
                keyCode = 0x0C;
                break;
-            case SDL_SCANCODE_RETURN:
+            case SDLK_RETURN:
                keyCode = 0x0D;
                break;
-            case SDL_SCANCODE_PAUSE:
+            case SDLK_PAUSE:
                keyCode = 0x13;
                break;
-            case SDL_SCANCODE_CAPSLOCK:
+            case SDLK_CAPSLOCK:
                keyCode = 0x14;
                break;
-            case SDL_SCANCODE_ESCAPE:
+            case SDLK_ESCAPE:
                keyCode = 0x1B;
                break;
-            case SDL_SCANCODE_SPACE:
+            case SDLK_SPACE:
                keyCode = 0x20;
                break;
-            case SDL_SCANCODE_PAGEUP:
+            case SDLK_PAGEUP:
                keyCode = 0x21;
                break;
-            case SDL_SCANCODE_PAGEDOWN:
+            case SDLK_PAGEDOWN:
                keyCode = 0x22;
                break;
-            case SDL_SCANCODE_END:
+            case SDLK_END:
                keyCode = 0x23;
                break;
-            case SDL_SCANCODE_HOME:
+            case SDLK_HOME:
                keyCode = 0x24;
                break;
-            case SDL_SCANCODE_LEFT:
+            case SDLK_LEFT:
                keyCode = 0x25;
                break;
-            case SDL_SCANCODE_UP:
+            case SDLK_UP:
                keyCode = 0x26;
                break;
-            case SDL_SCANCODE_RIGHT:
+            case SDLK_RIGHT:
                keyCode = 0x27;
                break;
-            case SDL_SCANCODE_DOWN:
+            case SDLK_DOWN:
                keyCode = 0x28;
                break;
-            case SDL_SCANCODE_SELECT:
+            case SDLK_SELECT:
                keyCode = 0x29;
                break;
-            case SDL_SCANCODE_EXECUTE:
+            case SDLK_EXECUTE:
                keyCode = 0x2B;
                break;
-            case SDL_SCANCODE_PRINTSCREEN:
+            case SDLK_PRINTSCREEN:
                keyCode = 0x2C;
                break;
-            case SDL_SCANCODE_INSERT:
+            case SDLK_INSERT:
                keyCode = 0x2D;
                break;
-            case SDL_SCANCODE_DELETE:
+            case SDLK_DELETE:
                keyCode = 0x2E;
                break;
-            case SDL_SCANCODE_HELP:
+            case SDLK_HELP:
                keyCode = 0x2F;
                break;
-            case SDL_SCANCODE_KP_0:
-                // See comment above about why we only handle SDL_SCANCODE_KP_0 here
-                keyCode = VK_NUMPAD0;
+            case SDLK_KP_0:
+                // See comment above about why we only handle KP_0 here
+                keyCode = 0x60;
                break;
-            case SDL_SCANCODE_0:
-                // See comment above about why we only handle SDL_SCANCODE_0 here
-                keyCode = VK_0;
-                break;
-            case SDL_SCANCODE_KP_MULTIPLY:
+            case SDLK_KP_MULTIPLY:
                keyCode = 0x6A;
                break;
-            case SDL_SCANCODE_KP_PLUS:
+            case SDLK_KP_PLUS:
                keyCode = 0x6B;
                break;
-            case SDL_SCANCODE_KP_COMMA:
+            case SDLK_KP_COMMA:
                keyCode = 0x6C;
                break;
-            case SDL_SCANCODE_KP_MINUS:
+            case SDLK_KP_MINUS:
                keyCode = 0x6D;
                break;
-            case SDL_SCANCODE_KP_DECIMAL:
+            case SDLK_KP_DECIMAL:
                keyCode = 0x6E;
                break;
-            case SDL_SCANCODE_KP_DIVIDE:
+            case SDLK_KP_DIVIDE:
                keyCode = 0x6F;
                break;
-            case SDL_SCANCODE_NUMLOCKCLEAR:
+            case SDLK_NUMLOCKCLEAR:
                keyCode = 0x90;
                break;
-            case SDL_SCANCODE_SCROLLLOCK:
+            case SDLK_SCROLLLOCK:
                keyCode = 0x91;
                break;
-            case SDL_SCANCODE_LSHIFT:
+            case SDLK_LSHIFT:
                keyCode = 0xA0;
                break;
-            case SDL_SCANCODE_RSHIFT:
+            case SDLK_RSHIFT:
                keyCode = 0xA1;
                break;
-            case SDL_SCANCODE_LCTRL:
+            case SDLK_LCTRL:
                keyCode = 0xA2;
                break;
-            case SDL_SCANCODE_RCTRL:
+            case SDLK_RCTRL:
                keyCode = 0xA3;
                break;
-            case SDL_SCANCODE_LALT:
+            case SDLK_LALT:
                keyCode = 0xA4;
                break;
-            case SDL_SCANCODE_RALT:
+            case SDLK_RALT:
                keyCode = 0xA5;
                break;
-            case SDL_SCANCODE_AC_BACK:
+            case SDLK_AC_BACK:
                keyCode = 0xA6;
                break;
-            case SDL_SCANCODE_AC_FORWARD:
+            case SDLK_AC_FORWARD:
                keyCode = 0xA7;
                break;
-            case SDL_SCANCODE_AC_REFRESH:
+            case SDLK_AC_REFRESH:
                keyCode = 0xA8;
                break;
-            case SDL_SCANCODE_AC_STOP:
+            case SDLK_AC_STOP:
                keyCode = 0xA9;
                break;
-            case SDL_SCANCODE_AC_SEARCH:
+            case SDLK_AC_SEARCH:
                keyCode = 0xAA;
                break;
-            case SDL_SCANCODE_AC_BOOKMARKS:
+            case SDLK_AC_BOOKMARKS:
                keyCode = 0xAB;
                break;
-            case SDL_SCANCODE_AC_HOME:
+            case SDLK_AC_HOME:
                keyCode = 0xAC;
                break;
-            case SDL_SCANCODE_SEMICOLON:
+            case SDLK_SEMICOLON:
                keyCode = 0xBA;
                break;
-            case SDL_SCANCODE_COMMA:
+            case SDLK_PLUS:
+                keyCode = 0xBB;
+                break;
+            case SDLK_COMMA:
                keyCode = 0xBC;
                break;
-            case SDL_SCANCODE_MINUS:
+            case SDLK_MINUS:
                keyCode = 0xBD;
                break;
-            case SDL_SCANCODE_PERIOD:
+            case SDLK_PERIOD:
                keyCode = 0xBE;
                break;
-            case SDL_SCANCODE_SLASH:
+            case SDLK_SLASH:
                keyCode = 0xBF;
                break;
-            case SDL_SCANCODE_GRAVE:
+            case SDLK_BACKQUOTE:
                keyCode = 0xC0;
                break;
-            case SDL_SCANCODE_LEFTBRACKET:
+            case SDLK_LEFTBRACKET:
                keyCode = 0xDB;
                break;
-            case SDL_SCANCODE_BACKSLASH:
+            case SDLK_BACKSLASH:
                keyCode = 0xDC;
                break;
-            case SDL_SCANCODE_RIGHTBRACKET:
+            case SDLK_RIGHTBRACKET:
                keyCode = 0xDD;
                break;
-            case SDL_SCANCODE_APOSTROPHE:
+            case SDLK_QUOTE:
                keyCode = 0xDE;
                break;
            default:
                SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
                            "Unhandled button event: %d",
-                             event->keysym.scancode);
+                             event->keysym.sym);
                return;
        }
    }
@@ -5,38 +5,16 @@
 #include <SDL.h>
 #include "utils.h"

-#ifdef HAVE_FFMPEG
+#ifdef __APPLE__
+#include "video/avfoundation.h"
+#endif
+
 #include "video/ffmpeg.h"
-#endif
-
-#ifdef HAVE_SLVIDEO
-#include "video/sl.h"
-#endif
-
-#if defined(Q_OS_WIN32) || defined(Q_OS_DARWIN)
-// Using full-screen desktop allows us to avoid needing to enable V-sync on Windows
-// and it also avoids some strange flickering issues on my Win7 test machine
-// with Intel HD 5500 graphics. It also allows Spaces to work on macOS.
-#define SDL_OS_FULLSCREEN_FLAG SDL_WINDOW_FULLSCREEN_DESKTOP
-#else
-#define SDL_OS_FULLSCREEN_FLAG SDL_WINDOW_FULLSCREEN
-#endif
-
-#ifdef Q_OS_WIN32
-// Scaling the icon down on Win32 looks dreadful, so render at lower res
-#define ICON_SIZE 32
-#else
-#define ICON_SIZE 64
-#endif
-
-#include <openssl/rand.h>

+#include <QRandomGenerator>
 #include <QtEndian>
 #include <QCoreApplication>
 #include <QThreadPool>
-#include <QSvgRenderer>
-#include <QPainter>
-#include <QImage>

 CONNECTION_LISTENER_CALLBACKS Session::k_ConnCallbacks = {
    Session::clStageStarting,
@@ -108,22 +86,21 @@ bool Session::chooseDecoder(StreamingPreferences::VideoDecoderSelection vds,
                            SDL_Window* window, int videoFormat, int width, int height,
                            int frameRate, IVideoDecoder*& chosenDecoder)
 {
-#ifdef HAVE_SLVIDEO
-    chosenDecoder = new SLVideoDecoder();
+#ifdef __APPLE__
+    chosenDecoder = AVFoundationDecoderFactory::createDecoder();
    if (chosenDecoder->initialize(vds, window, videoFormat, width, height, frameRate)) {
        SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                    "SLVideo video decoder chosen");
+                    "AVFoundation-based video decoder chosen");
        return true;
    }
    else {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "Unable to load SLVideo decoder");
+                     "Unable to load AVFoundation decoder");
        delete chosenDecoder;
        chosenDecoder = nullptr;
    }
 #endif

-#ifdef HAVE_FFMPEG
    chosenDecoder = new FFmpegVideoDecoder();
    if (chosenDecoder->initialize(vds, window, videoFormat, width, height, frameRate)) {
        SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
@@ -136,7 +113,6 @@ bool Session::chooseDecoder(StreamingPreferences::VideoDecoderSelection vds,
        delete chosenDecoder;
        chosenDecoder = nullptr;
    }
-#endif

    // If we reach this, we didn't initialize any decoders successfully
    return false;
@@ -144,17 +120,12 @@ bool Session::chooseDecoder(StreamingPreferences::VideoDecoderSelection vds,

 int Session::drSetup(int videoFormat, int width, int height, int frameRate, void *, int)
 {
-    s_ActiveSession->m_ActiveVideoFormat = videoFormat;
-    s_ActiveSession->m_ActiveVideoWidth = width;
-    s_ActiveSession->m_ActiveVideoHeight = height;
-    s_ActiveSession->m_ActiveVideoFrameRate = frameRate;
-
-    // Defer decoder setup until we've started streaming so we
-    // don't have to hide and show the SDL window (which seems to
-    // cause pointer hiding to break on Windows).
-
-    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Video stream is %dx%dx%d (format 0x%x)",
-                width, height, frameRate, videoFormat);
+    if (!chooseDecoder(s_ActiveSession->m_Preferences.videoDecoderSelection,
+                       s_ActiveSession->m_Window,
+                       videoFormat, width, height, frameRate,
+                       s_ActiveSession->m_VideoDecoder)) {
+        return -1;
+    }

    return 0;
 }
@@ -165,16 +136,7 @@ int Session::drSubmitDecodeUnit(PDECODE_UNIT du)
    // from underneath the session when we initiate destruction.
    // We need to destroy the decoder on the main thread to satisfy
    // some API constraints (like DXVA2).
-
    SDL_AtomicLock(&s_ActiveSession->m_DecoderLock);
-
-    if (s_ActiveSession->m_NeedsIdr) {
-        // If we reset our decoder, we'll need to request an IDR frame
-        s_ActiveSession->m_NeedsIdr = false;
-        SDL_AtomicUnlock(&s_ActiveSession->m_DecoderLock);
-        return DR_NEED_IDR;
-    }
-
    IVideoDecoder* decoder = s_ActiveSession->m_VideoDecoder;
    if (decoder != nullptr) {
        int ret = decoder->submitDecodeUnit(du);
@@ -192,35 +154,23 @@ bool Session::isHardwareDecodeAvailable(StreamingPreferences::VideoDecoderSelect
 {
    IVideoDecoder* decoder;

-    if (SDL_InitSubSystem(SDL_INIT_VIDEO) != 0) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SDL_InitSubSystem(SDL_INIT_VIDEO) failed: %s",
-                     SDL_GetError());
-        return false;
-    }
-
    SDL_Window* window = SDL_CreateWindow("", 0, 0, width, height, SDL_WINDOW_HIDDEN);
    if (!window) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                     "Failed to create window for hardware decode test: %s",
                     SDL_GetError());
-        SDL_QuitSubSystem(SDL_INIT_VIDEO);
        return false;
    }

    if (!chooseDecoder(vds, window, videoFormat, width, height, frameRate, decoder)) {
        SDL_DestroyWindow(window);
-        SDL_QuitSubSystem(SDL_INIT_VIDEO);
        return false;
    }

    SDL_DestroyWindow(window);

    bool ret = decoder->isHardwareAccelerated();
-
    delete decoder;
-    SDL_QuitSubSystem(SDL_INIT_VIDEO);
-
    return ret;
 }

@@ -229,8 +179,7 @@ Session::Session(NvComputer* computer, NvApp& app)
      m_App(app),
      m_Window(nullptr),
      m_VideoDecoder(nullptr),
-      m_DecoderLock(0),
-      m_NeedsIdr(false)
+      m_DecoderLock(0)
 {
    LiInitializeVideoCallbacks(&m_VideoCallbacks);
    m_VideoCallbacks.setup = drSetup;
@@ -248,16 +197,14 @@ Session::Session(NvComputer* computer, NvApp& app)
    m_StreamConfig.fps = m_Preferences.fps;
    m_StreamConfig.bitrate = m_Preferences.bitrateKbps;
    m_StreamConfig.hevcBitratePercentageMultiplier = 75;
-    RAND_bytes(reinterpret_cast<unsigned char*>(m_StreamConfig.remoteInputAesKey),
-               sizeof(m_StreamConfig.remoteInputAesKey));
-
-    // Only the first 4 bytes are populated in the RI key IV
-    RAND_bytes(reinterpret_cast<unsigned char*>(m_StreamConfig.remoteInputAesIv), 4);
-
+    for (unsigned int i = 0; i < sizeof(m_StreamConfig.remoteInputAesKey); i++) {
+        m_StreamConfig.remoteInputAesKey[i] =
+                (char)(QRandomGenerator::global()->generate() % 256);
+    }
+    *(int*)m_StreamConfig.remoteInputAesIv = qToBigEndian(QRandomGenerator::global()->generate());
    switch (m_Preferences.audioConfig)
    {
    case StreamingPreferences::AC_AUTO:
-        SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Autodetecting audio configuration");
        m_StreamConfig.audioConfiguration = sdlDetermineAudioConfiguration();
        break;
    case StreamingPreferences::AC_FORCE_STEREO:
@@ -268,10 +215,6 @@ Session::Session(NvComputer* computer, NvApp& app)
        break;
    }

-    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                "Audio configuration: %d",
-                m_StreamConfig.audioConfiguration);
-
    switch (m_Preferences.videoCodecConfig)
    {
    case StreamingPreferences::VCC_AUTO:
@@ -318,30 +261,23 @@ bool Session::validateLaunch()
    QStringList warningList;

    if (m_StreamConfig.supportsHevc) {
-        bool hevcForced = m_Preferences.videoCodecConfig == StreamingPreferences::VCC_FORCE_HEVC ||
-                m_Preferences.videoCodecConfig == StreamingPreferences::VCC_FORCE_HEVC_HDR;
-
-        if (!isHardwareDecodeAvailable(m_Preferences.videoDecoderSelection,
-                                       VIDEO_FORMAT_H265,
-                                       m_StreamConfig.width,
-                                       m_StreamConfig.height,
-                                       m_StreamConfig.fps)) {
+        if (m_Preferences.videoCodecConfig == StreamingPreferences::VCC_FORCE_HEVC ||
+                m_Preferences.videoCodecConfig == StreamingPreferences::VCC_FORCE_HEVC_HDR) {
+            if (m_Computer->maxLumaPixelsHEVC == 0) {
+                emit displayLaunchWarning("Your host PC GPU doesn't support HEVC. "
+                                          "A GeForce GTX 900-series (Maxwell) or later GPU is required for HEVC streaming.");
+            }
+        }
+        else if (!isHardwareDecodeAvailable(m_Preferences.videoDecoderSelection,
+                                            VIDEO_FORMAT_H265,
+                                            m_StreamConfig.width,
+                                            m_StreamConfig.height,
+                                            m_StreamConfig.fps)) {
            // NOTE: HEVC currently uses only 1 slice regardless of what
            // we provide in CAPABILITY_SLICES_PER_FRAME(), so we should
            // never use it for software decoding (unless common-c starts
            // respecting it for HEVC).
            m_StreamConfig.supportsHevc = false;
-
-            if (hevcForced) {
-                emit displayLaunchWarning("This PC's GPU doesn't support HEVC decoding.");
-            }
-        }
-
-        if (hevcForced) {
-            if (m_Computer->maxLumaPixelsHEVC == 0) {
-                emit displayLaunchWarning("Your host PC GPU doesn't support HEVC. "
-                                          "A GeForce GTX 900-series (Maxwell) or later GPU is required for HEVC streaming.");
-            }
        }
    }

@@ -363,7 +299,7 @@ bool Session::validateLaunch()
                                            m_StreamConfig.width,
                                            m_StreamConfig.height,
                                            m_StreamConfig.fps)) {
-            emit displayLaunchWarning("This PC's GPU doesn't support HEVC Main10 decoding for HDR streaming.");
+            emit displayLaunchWarning("Your client PC GPU doesn't support HEVC Main10 decoding for HDR streaming.");
        }
        else {
            // TODO: Also validate display capabilites
@@ -403,6 +339,9 @@ class DeferredSessionCleanupTask : public QRunnable
    {
        // Finish cleanup of the connection state
        LiStopConnection();
+        if (Session::s_ActiveSession->m_Window != nullptr) {
+            SDL_DestroyWindow(Session::s_ActiveSession->m_Window);
+        }

        // Allow another session to start now that we're cleaned up
        Session::s_ActiveSession = nullptr;
@@ -410,103 +349,6 @@ class DeferredSessionCleanupTask : public QRunnable
    }
 };

-void Session::getWindowDimensions(bool fullScreen,
-                                  int& x, int& y,
-                                  int& width, int& height)
-{
-    int displayIndex = 0;
-
-    if (m_Window != nullptr) {
-        displayIndex = SDL_GetWindowDisplayIndex(m_Window);
-        if (displayIndex < 0) {
-            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                         "SDL_GetWindowDisplayIndex() failed: %s",
-                         SDL_GetError());
-
-            // Assume display 0
-            displayIndex = 0;
-        }
-    }
-
-    if (fullScreen) {
-        SDL_DisplayMode currentMode;
-
-        if (SDL_GetCurrentDisplayMode(displayIndex, &currentMode) == 0) {
-            SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                        "Using current display mode: %dx%dx%d",
-                        currentMode.w, currentMode.h, currentMode.refresh_rate);
-            width = currentMode.w;
-            height = currentMode.h;
-        }
-        else {
-            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                         "Unable to get current display mode: %s",
-                         SDL_GetError());
-            width = m_StreamConfig.width;
-            height = m_StreamConfig.height;
-        }
-
-        // Full-screen modes always start at the origin
-        x = y = SDL_WINDOWPOS_UNDEFINED_DISPLAY(displayIndex);
-    }
-    else {
-        SDL_Rect usableBounds;
-        if (SDL_GetDisplayUsableBounds(displayIndex, &usableBounds) == 0) {
-            width = usableBounds.w;
-            height = usableBounds.h;
-            x = usableBounds.x;
-            y = usableBounds.y;
-
-            if (m_Window != nullptr) {
-                int top, left, bottom, right;
-
-                if (SDL_GetWindowBordersSize(m_Window, &top, &left, &bottom, &right) < 0) {
-                    SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
-                                "Unable to get window border size");
-                    return;
-                }
-
-                x += left;
-                y += top;
-
-                width -= left + right;
-                height -= top + bottom;
-            }
-        }
-        else {
-            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                         "SDL_GetDisplayUsableBounds() failed: %s",
-                         SDL_GetError());
-
-            width = m_StreamConfig.width;
-            height = m_StreamConfig.height;
-            x = y = SDL_WINDOWPOS_UNDEFINED_DISPLAY(displayIndex);
-        }
-    }
-}
-
-void Session::toggleFullscreen()
-{
-    bool fullScreen = !(SDL_GetWindowFlags(m_Window) & SDL_OS_FULLSCREEN_FLAG);
-
-    int x, y, width, height;
-
-    // If we're leaving full screen, toggle out before setting our size and position
-    // that way we have accurate display size metrics (not the size our stream changed it to).
-    if (!fullScreen) {
-        SDL_SetWindowFullscreen(m_Window, 0);
-    }
-
-    getWindowDimensions(fullScreen, x, y, width, height);
-
-    SDL_SetWindowPosition(m_Window, x, y);
-    SDL_SetWindowSize(m_Window, width, height);
-
-    if (fullScreen) {
-        SDL_SetWindowFullscreen(m_Window, SDL_OS_FULLSCREEN_FLAG);
-    }
-}
-
 void Session::exec()
 {
    // Check for validation errors/warnings and emit
@@ -550,12 +392,64 @@ void Session::exec()
        return;
    }

-    SDL_assert(!SDL_WasInit(SDL_INIT_VIDEO));
-    if (SDL_InitSubSystem(SDL_INIT_VIDEO) != 0) {
+    int flags = SDL_WINDOW_HIDDEN;
+    int width, height;
+    if (m_Preferences.fullScreen) {
+        SDL_DisplayMode desired, closest;
+
+        SDL_zero(desired);
+        desired.w = m_StreamConfig.width;
+        desired.h = m_StreamConfig.height;
+        desired.refresh_rate = m_StreamConfig.fps;
+
+        if (SDL_GetClosestDisplayMode(0, &desired, &closest)) {
+            SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
+                        "Closest match for %dx%dx%d is %dx%dx%d",
+                        desired.w, desired.h, desired.refresh_rate,
+                        closest.w, closest.h, closest.refresh_rate);
+            width = closest.w;
+            height = closest.h;
+        }
+        else if (SDL_GetCurrentDisplayMode(0, &closest) == 0) {
+            SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
+                        "Using current display mode: %dx%dx%d",
+                        closest.w, closest.h, closest.refresh_rate);
+            width = closest.w;
+            height = closest.h;
+        }
+        else {
+            SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
+                        "Unable to get current or closest display mode");
+            width = m_StreamConfig.width;
+            height = m_StreamConfig.height;
+        }
+
+        flags |= SDL_WINDOW_FULLSCREEN;
+    }
+    else {
+        SDL_DisplayMode current;
+
+        width = m_StreamConfig.width;
+        height = m_StreamConfig.height;
+
+        if (SDL_GetCurrentDisplayMode(0, &current) == 0) {
+            if (current.w <= m_StreamConfig.width || current.h <= m_StreamConfig.height) {
+                // If we match or exceed the dimensions of the display, maximize the window
+                flags |= SDL_WINDOW_MAXIMIZED;
+            }
+        }
+    }
+
+    m_Window = SDL_CreateWindow("Moonlight",
+                                SDL_WINDOWPOS_UNDEFINED,
+                                SDL_WINDOWPOS_UNDEFINED,
+                                width,
+                                height,
+                                flags);
+    if (!m_Window) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SDL_InitSubSystem(SDL_INIT_VIDEO) failed: %s",
+                     "SDL_CreateWindow() failed: %s",
                     SDL_GetError());
-        emit displayLaunchError(QString::fromLocal8Bit(SDL_GetError()));
        s_ActiveSessionSemaphore.release();
        return;
    }
@@ -583,7 +477,6 @@ void Session::exec()
        // We already displayed an error dialog in the stage failure
        // listener.
        s_ActiveSessionSemaphore.release();
-        SDL_QuitSubSystem(SDL_INIT_VIDEO);
        return;
    }

@@ -591,67 +484,11 @@ void Session::exec()
    emit connectionStarted();
    QCoreApplication::processEvents(QEventLoop::ExcludeUserInputEvents);

-    int x, y, width, height;
-    getWindowDimensions(m_Preferences.fullScreen,
-                        x, y, width, height);
+    // Show the streaming window
+    SDL_ShowWindow(m_Window);

-    m_Window = SDL_CreateWindow("Moonlight",
-                                x,
-                                y,
-                                width,
-                                height,
-                                m_Preferences.fullScreen ?
-                                    SDL_OS_FULLSCREEN_FLAG : 0);
-    if (!m_Window) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SDL_CreateWindow() failed: %s",
-                     SDL_GetError());
-        s_ActiveSessionSemaphore.release();
-        SDL_QuitSubSystem(SDL_INIT_VIDEO);
-        return;
-    }
-
-    // For non-full screen windows, call getWindowDimensions()
-    // again after creating a window to allow it to account
-    // for window chrome size.
-    if (!m_Preferences.fullScreen) {
-        getWindowDimensions(false, x, y, width, height);
-
-        SDL_SetWindowPosition(m_Window, x, y);
-        SDL_SetWindowSize(m_Window, width, height);
-    }
-
-    QSvgRenderer svgIconRenderer(QString(":/res/moonlight.svg"));
-    QImage svgImage(ICON_SIZE, ICON_SIZE, QImage::Format_RGBA8888);
-    svgImage.fill(0);
-
-    QPainter svgPainter(&svgImage);
-    svgIconRenderer.render(&svgPainter);
-    SDL_Surface* iconSurface = SDL_CreateRGBSurfaceWithFormatFrom((void*)svgImage.constBits(),
-                                                                  svgImage.width(),
-                                                                  svgImage.height(),
-                                                                  32,
-                                                                  4 * svgImage.width(),
-                                                                  SDL_PIXELFORMAT_RGBA32);
-#ifndef Q_OS_DARWIN
-    // Other platforms seem to preserve our Qt icon when creating a new window
-    if (iconSurface != nullptr) {
-        SDL_SetWindowIcon(m_Window, iconSurface);
-    }
-#endif
-
-#ifndef QT_DEBUG
-    // Capture the mouse by default on release builds only.
-    // This prevents the mouse from becoming trapped inside
-    // Moonlight when it's halted at a debug break.
+    // Capture the mouse
    SDL_SetRelativeMouseMode(SDL_TRUE);
-#endif
-
-    // Stop text input. SDL enables it by default
-    // when we initialize the video subsystem, but this
-    // causes an IME popup when certain keys are held down
-    // on macOS.
-    SDL_StopTextInput();

    // Disable the screen saver
    SDL_DisableScreenSaver();
@@ -692,41 +529,6 @@ void Session::exec()
            m_VideoDecoder->renderFrame(&event.user);
            break;
        }
-
-        case SDL_WINDOWEVENT:
-            // We want to recreate the decoder for resizes (full-screen toggles) and the initial shown event.
-            // We use SDL_WINDOWEVENT_SIZE_CHANGED rather than SDL_WINDOWEVENT_RESIZED because the latter doesn't
-            // seem to fire when switching from windowed to full-screen on X11.
-            if (event.window.event != SDL_WINDOWEVENT_SIZE_CHANGED && event.window.event != SDL_WINDOWEVENT_SHOWN) {
-                break;
-            }
-
-            // Fall through
-        case SDL_RENDER_DEVICE_RESET:
-        case SDL_RENDER_TARGETS_RESET:
-            SDL_AtomicLock(&m_DecoderLock);
-
-            // Destroy the old decoder
-            delete m_VideoDecoder;
-
-            // Chose a new decoder (hopefully the same one, but possibly
-            // not if a GPU was removed or something).
-            if (!chooseDecoder(m_Preferences.videoDecoderSelection,
-                               m_Window, m_ActiveVideoFormat, m_ActiveVideoWidth,
-                               m_ActiveVideoHeight, m_ActiveVideoFrameRate,
-                               s_ActiveSession->m_VideoDecoder)) {
-                SDL_AtomicUnlock(&m_DecoderLock);
-                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                             "Failed to recreate decoder after reset");
-                goto DispatchDeferredCleanup;
-            }
-
-            // Request an IDR frame to complete the reset
-            m_NeedsIdr = true;
-
-            SDL_AtomicUnlock(&m_DecoderLock);
-            break;
-
        case SDL_KEYUP:
        case SDL_KEYDOWN:
            inputHandler.handleKeyEvent(&event.key);
@@ -764,6 +566,9 @@ DispatchDeferredCleanup:
    // so we can return to the Qt GUI ASAP.
    SDL_SetRelativeMouseMode(SDL_FALSE);
    SDL_EnableScreenSaver();
+    if (m_Window != nullptr) {
+        SDL_HideWindow(m_Window);
+    }

    // Destroy the decoder, since this must be done on the main thread
    SDL_AtomicLock(&m_DecoderLock);
@@ -771,13 +576,6 @@ DispatchDeferredCleanup:
    m_VideoDecoder = nullptr;
    SDL_AtomicUnlock(&m_DecoderLock);

-    SDL_DestroyWindow(m_Window);
-    if (iconSurface != nullptr) {
-        SDL_FreeSurface(iconSurface);
-    }
-    SDL_QuitSubSystem(SDL_INIT_VIDEO);
-    SDL_assert(!SDL_WasInit(SDL_INIT_VIDEO));
-
    // Cleanup can take a while, so dispatch it to a worker thread.
    // When it is complete, it will release our s_ActiveSessionSemaphore
    // reference.
@@ -21,10 +21,6 @@ public:

    Q_INVOKABLE void exec();

-    static
-    bool isHardwareDecodeAvailable(StreamingPreferences::VideoDecoderSelection vds,
-                                   int videoFormat, int width, int height, int frameRate);
-
 signals:
    void stageStarting(QString stage);

@@ -43,11 +39,9 @@ private:

    int sdlDetermineAudioConfiguration();

-    void getWindowDimensions(bool fullScreen,
-                             int& x, int& y,
-                             int& width, int& height);
-
-    void toggleFullscreen();
+    static
+    bool isHardwareDecodeAvailable(StreamingPreferences::VideoDecoderSelection vds,
+                                   int videoFormat, int width, int height, int frameRate);

    static
    bool chooseDecoder(StreamingPreferences::VideoDecoderSelection vds,
@@ -100,12 +94,6 @@ private:
    SDL_Window* m_Window;
    IVideoDecoder* m_VideoDecoder;
    SDL_SpinLock m_DecoderLock;
-    bool m_NeedsIdr;
-
-    int m_ActiveVideoFormat;
-    int m_ActiveVideoWidth;
-    int m_ActiveVideoHeight;
-    int m_ActiveVideoFrameRate;

    static SDL_AudioDeviceID s_AudioDevice;
    static OpusMSDecoder* s_OpusDecoder;
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "decoder.h"
+
+// A factory is required to avoid pulling in
+// incompatible Objective-C headers.
+class AVFoundationDecoderFactory {
+public:
+    static
+    IVideoDecoder* createDecoder();
+};
@@ -0,0 +1,521 @@
+#include "avfoundation.h"
+
+#include <SDL_syswm.h>
+
+#import <Cocoa/Cocoa.h>
+#import <VideoToolbox/VideoToolbox.h>
+#import <AVFoundation/AVFoundation.h>
+#import <CoreVideo/CoreVideo.h>
+
+#define FRAME_START_PREFIX_SIZE 4
+#define NALU_START_PREFIX_SIZE 3
+#define NAL_LENGTH_PREFIX_SIZE 4
+
+#define FUTURE_FRAMES_IN_VSYNC 3
+
+class AVFoundationDecoder : public IVideoDecoder
+{
+public:
+    AVFoundationDecoder()
+        : m_DisplayLayer(nullptr),
+          m_FormatDesc(nullptr),
+          m_SpsData(nullptr),
+          m_PpsData(nullptr),
+          m_VpsData(nullptr),
+          m_View(nullptr),
+          m_NeedsIdr(false),
+          m_DisplayLink(nullptr),
+          m_VsyncTime(0),
+          m_LastVsyncTime(0),
+          m_VsyncStatsLock(0)
+    {
+        SDL_zero(m_FrameCountOnVsync);
+    }
+
+    virtual ~AVFoundationDecoder()
+    {
+        if (m_FormatDesc != nullptr) {
+            CFRelease(m_FormatDesc);
+        }
+
+        if (m_DisplayLink != nullptr) {
+            CVDisplayLinkStop(m_DisplayLink);
+            CVDisplayLinkRelease(m_DisplayLink);
+        }
+
+        delete m_SpsData;
+        delete m_PpsData;
+        delete m_VpsData;
+    }
+
+    static
+    CVReturn
+    displayLinkOutputCallback(
+        CVDisplayLinkRef,
+        const CVTimeStamp*,
+        const CVTimeStamp* vsyncTime,
+        CVOptionFlags,
+        CVOptionFlags*,
+        void *displayLinkContext)
+    {
+        AVFoundationDecoder* me = reinterpret_cast<AVFoundationDecoder*>(displayLinkContext);
+
+        SDL_AtomicLock(&me->m_VsyncStatsLock);
+        me->m_LastVsyncTime = me->m_VsyncTime;
+        me->m_VsyncTime = vsyncTime->hostTime;
+
+        int framesThisVsync = *(volatile int*)&me->m_FrameCountOnVsync[0];
+
+        memmove(&me->m_FrameCountOnVsync[0],
+                &me->m_FrameCountOnVsync[1],
+                sizeof(me->m_FrameCountOnVsync) - sizeof(me->m_FrameCountOnVsync[0]));
+        me->m_FrameCountOnVsync[FUTURE_FRAMES_IN_VSYNC - 1] = 0;
+        SDL_AtomicUnlock(&me->m_VsyncStatsLock);
+
+        if (framesThisVsync != 1)
+            SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
+                        "V-Sync interval frames: %d",
+                        framesThisVsync);
+
+        return kCVReturnSuccess;
+    }
+
+    virtual bool initialize(StreamingPreferences::VideoDecoderSelection vds,
+                            SDL_Window* window,
+                            int videoFormat,
+                            int, int, int) override
+    {
+        m_VideoFormat = videoFormat;
+
+        // Fail if the user wants software decode only
+        if (vds == StreamingPreferences::VDS_FORCE_SOFTWARE) {
+            return false;
+        }
+
+        if (videoFormat & VIDEO_FORMAT_MASK_H264) {
+            // Prior to 10.13, we'll just assume everything has
+            // H.264 support and fail open to allow VT decode.
+    #if __MAC_OS_X_VERSION_MAX_ALLOWED >= 101300
+            if (__builtin_available(macOS 10.13, *)) {
+                if (!VTIsHardwareDecodeSupported(kCMVideoCodecType_H264)) {
+                    SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
+                                "No HW accelerated H.264 decode via VT");
+                    return false;
+                }
+            }
+            else
+    #endif
+            {
+                SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
+                            "Assuming H.264 HW decode on < macOS 10.13");
+            }
+        }
+        else if (videoFormat & VIDEO_FORMAT_MASK_H265) {
+    #if __MAC_OS_X_VERSION_MAX_ALLOWED >= 101300
+            if (__builtin_available(macOS 10.13, *)) {
+                if (!VTIsHardwareDecodeSupported(kCMVideoCodecType_HEVC)) {
+                    SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
+                                "No HW accelerated HEVC decode via VT");
+                    return false;
+                }
+            }
+            else
+    #endif
+            {
+                // Fail closed for HEVC if we're not on 10.13+
+                SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
+                            "No HEVC support on < macOS 10.13");
+                return false;
+            }
+        }
+
+        SDL_SysWMinfo info;
+
+        SDL_VERSION(&info.version);
+
+        if (!SDL_GetWindowWMInfo(window, &info)) {
+            SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
+                        "SDL_GetWindowWMInfo() failed: %s",
+                        SDL_GetError());
+            return false;
+        }
+
+        SDL_assert(info.subsystem == SDL_SYSWM_COCOA);
+
+        // SDL adds its own content view to listen for events.
+        // We need to add a subview for our display layer.
+        NSView* contentView = info.info.cocoa.window.contentView;
+        m_View = [[NSView alloc] initWithFrame:contentView.bounds];
+        m_View.wantsLayer = YES;
+        [contentView addSubview: m_View];
+
+        setupDisplayLayer();
+
+        CVDisplayLinkCreateWithActiveCGDisplays(&m_DisplayLink);
+        CVDisplayLinkSetOutputCallback(m_DisplayLink, displayLinkOutputCallback, (void*)this);
+        CVDisplayLinkStart(m_DisplayLink);
+
+        return true;
+    }
+
+    virtual bool isHardwareAccelerated() override
+    {
+        // We only use AVFoundation for HW acceleration
+        return true;
+    }
+
+    virtual int submitDecodeUnit(PDECODE_UNIT du) override
+    {
+        OSStatus status;
+
+        unsigned char* data = (unsigned char*)malloc(du->fullLength);
+        if (!data) {
+            return DR_NEED_IDR;
+        }
+
+        PLENTRY entry = du->bufferList;
+        int pictureDataLength = 0;
+        while (entry != nullptr) {
+            if (entry->bufferType == BUFFER_TYPE_VPS) {
+                SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Got VPS");
+                delete m_VpsData;
+                m_VpsData = new QByteArray(&entry->data[FRAME_START_PREFIX_SIZE], entry->length - FRAME_START_PREFIX_SIZE);
+
+                // We got a new VPS so wait for a new SPS to match it
+                delete m_SpsData;
+                delete m_PpsData;
+                m_SpsData = m_PpsData = nullptr;
+            }
+            else if (entry->bufferType == BUFFER_TYPE_SPS) {
+                SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Got SPS");
+                delete m_SpsData;
+                m_SpsData = new QByteArray(&entry->data[FRAME_START_PREFIX_SIZE], entry->length - FRAME_START_PREFIX_SIZE);
+
+                // We got a new SPS so wait for a new PPS to match it
+                delete m_PpsData;
+                m_PpsData = nullptr;
+            }
+            else if (entry->bufferType == BUFFER_TYPE_PPS) {
+                SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Got PPS");
+                delete m_PpsData;
+                m_PpsData = new QByteArray(&entry->data[FRAME_START_PREFIX_SIZE], entry->length - FRAME_START_PREFIX_SIZE);
+            }
+            else {
+                // Picture data
+                SDL_assert(entry->bufferType == BUFFER_TYPE_PICDATA);
+                memcpy(&data[pictureDataLength],
+                       entry->data,
+                       entry->length);
+                pictureDataLength += entry->length;
+            }
+
+            entry = entry->next;
+        }
+
+        SDL_assert(pictureDataLength <= du->fullLength);
+
+        if (du->frameType == FRAME_TYPE_IDR) {
+            m_NeedsIdr = false;
+
+            if (m_FormatDesc != nullptr) {
+                CFRelease(m_FormatDesc);
+            }
+
+            if (m_VideoFormat & VIDEO_FORMAT_MASK_H264) {
+                const uint8_t* const parameterSetPointers[] = { (uint8_t*)m_SpsData->data(),
+                                                                (uint8_t*)m_PpsData->data() };
+                const size_t parameterSetSizes[] = { (size_t)m_SpsData->length(),
+                                                     (size_t)m_PpsData->length() };
+
+                SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Constructing new H264 format description");
+                status = CMVideoFormatDescriptionCreateFromH264ParameterSets(kCFAllocatorDefault,
+                                                                             2, /* count of parameter sets */
+                                                                             parameterSetPointers,
+                                                                             parameterSetSizes,
+                                                                             NAL_LENGTH_PREFIX_SIZE,
+                                                                             &m_FormatDesc);
+                if (status != noErr) {
+                    SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                                 "Failed to create H264 format description: %d",
+                                 (int)status);
+                    m_FormatDesc = NULL;
+                }
+            }
+            else {
+#if __MAC_OS_X_VERSION_MAX_ALLOWED >= 101300
+                const uint8_t* const parameterSetPointers[] = { (uint8_t*)m_VpsData->data(),
+                                                                (uint8_t*)m_SpsData->data(),
+                                                                (uint8_t*)m_PpsData->data() };
+                const size_t parameterSetSizes[] = { (size_t)m_VpsData->length(),
+                                                     (size_t)m_SpsData->length(),
+                                                     (size_t)m_PpsData->length() };
+
+                SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Constructing new HEVC format description");
+
+                if (__builtin_available(macOS 10.13, *)) {
+                    status = CMVideoFormatDescriptionCreateFromHEVCParameterSets(kCFAllocatorDefault,
+                                                                                 3, /* count of parameter sets */
+                                                                                 parameterSetPointers,
+                                                                                 parameterSetSizes,
+                                                                                 NAL_LENGTH_PREFIX_SIZE,
+                                                                                 nil,
+                                                                                 &m_FormatDesc);
+                    if (status != noErr) {
+                        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                                     "Failed to create HEVC format description: %d",
+                                     (int)status);
+                        m_FormatDesc = NULL;
+                    }
+                }
+                else
+#endif
+                {
+                    // This means Moonlight-common-c decided to give us an HEVC stream
+                    // even though we said we couldn't support it. All we can do is abort().
+                    abort();
+                }
+            }
+        }
+
+        if (m_FormatDesc == nullptr || m_NeedsIdr) {
+            // Can't decode if we haven't gotten our parameter sets yet
+            free(data);
+            return DR_NEED_IDR;
+        }
+
+        // Now we're decoding actual frame data here
+        CMBlockBufferRef blockBuffer;
+
+        status = CMBlockBufferCreateEmpty(NULL, 0, 0, &blockBuffer);
+        if (status != noErr) {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                         "CMBlockBufferCreateEmpty failed: %d",
+                         (int)status);
+            free(data);
+            return DR_NEED_IDR;
+        }
+
+        int lastOffset = -1;
+        for (int i = 0; i < pictureDataLength - FRAME_START_PREFIX_SIZE; i++) {
+            // Search for a NALU
+            if (data[i] == 0 && data[i+1] == 0 && data[i+2] == 1) {
+                // It's the start of a new NALU
+                if (lastOffset != -1) {
+                    // We've seen a start before this so enqueue that NALU
+                    updateBufferForRange(blockBuffer, data, lastOffset, i - lastOffset);
+                }
+
+                lastOffset = i;
+            }
+        }
+
+        if (lastOffset != -1) {
+            // Enqueue the remaining data
+            updateBufferForRange(blockBuffer, data, lastOffset, pictureDataLength - lastOffset);
+        }
+
+        // From now on, CMBlockBuffer owns the data pointer and will free it when it's released
+
+        CMSampleBufferRef sampleBuffer;
+
+        CMSampleTimingInfo time = {
+            .decodeTimeStamp = kCMTimeInvalid,
+            .duration = kCMTimeInvalid
+        };
+
+        SDL_AtomicLock(&m_VsyncStatsLock);
+        // Find a slot to put this frame
+        for (int i = 0; i < FUTURE_FRAMES_IN_VSYNC; i++) {
+            if (m_FrameCountOnVsync[i] == 0) {
+                time.presentationTimeStamp =
+                        CMTimeMake(m_VsyncTime + (i + 1) * (m_VsyncTime - m_LastVsyncTime),
+                                   1000 * 1000 * 1000);
+                m_FrameCountOnVsync[i]++;
+            }
+        }
+        SDL_AtomicUnlock(&m_VsyncStatsLock);
+
+        status = CMSampleBufferCreate(kCFAllocatorDefault,
+                                      blockBuffer,
+                                      true, NULL,
+                                      NULL, m_FormatDesc, 1, 1,
+                                      &time, 0, NULL,
+                                      &sampleBuffer);
+        if (status != noErr) {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                         "CMSampleBufferCreate failed: %d",
+                         (int)status);
+            CFRelease(blockBuffer);
+            return DR_NEED_IDR;
+        }
+
+        // Submit for callback on the main thread
+        queueFrame(sampleBuffer, (void*)(long)du->frameType);
+
+        return DR_OK;
+    }
+
+    // This is called on the main thread, so it's safe to interact with
+    // the AVSampleBufferDisplayLayer here.
+    void submitBuffer(CMSampleBufferRef sampleBuffer, int frameType)
+    {
+        if (m_DisplayLayer.status == AVQueuedSampleBufferRenderingStatusFailed) {
+            SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
+                        "Resetting failed AVSampleBufferDisplay layer");
+            setupDisplayLayer();
+            CFRelease(sampleBuffer);
+            return;
+        }
+
+        CFArrayRef attachments = CMSampleBufferGetSampleAttachmentsArray(sampleBuffer, YES);
+        CFMutableDictionaryRef dict = (CFMutableDictionaryRef)CFArrayGetValueAtIndex(attachments, 0);
+
+        CFDictionarySetValue(dict, kCMSampleAttachmentKey_IsDependedOnByOthers, kCFBooleanTrue);
+
+        if (frameType == FRAME_TYPE_PFRAME) {
+            // P-frame
+            CFDictionarySetValue(dict, kCMSampleAttachmentKey_NotSync, kCFBooleanTrue);
+            CFDictionarySetValue(dict, kCMSampleAttachmentKey_DependsOnOthers, kCFBooleanTrue);
+        } else {
+            // I-frame
+            CFDictionarySetValue(dict, kCMSampleAttachmentKey_NotSync, kCFBooleanFalse);
+            CFDictionarySetValue(dict, kCMSampleAttachmentKey_DependsOnOthers, kCFBooleanFalse);
+        }
+
+        [m_DisplayLayer enqueueSampleBuffer:sampleBuffer];
+
+        CFRelease(sampleBuffer);
+    }
+
+    virtual void renderFrame(SDL_UserEvent* event) override
+    {
+        submitBuffer((CMSampleBufferRef)event->data1, (int)(long)event->data2);
+    }
+
+    virtual void dropFrame(SDL_UserEvent* event) override
+    {
+        // Submit anyway and let the drop happen in the render pipeline
+        submitBuffer((CMSampleBufferRef)event->data1, (int)(long)event->data2);
+    }
+
+private:
+    void setupDisplayLayer()
+    {
+        CALayer* oldLayer = m_DisplayLayer;
+
+        m_DisplayLayer = [[AVSampleBufferDisplayLayer alloc] init];
+        m_DisplayLayer.bounds = m_View.bounds;
+        m_DisplayLayer.position = CGPointMake(CGRectGetMidX(m_View.bounds), CGRectGetMidY(m_View.bounds));
+        m_DisplayLayer.videoGravity = AVLayerVideoGravityResizeAspect;
+
+        CALayer* viewLayer = m_View.layer;
+        if (oldLayer != nil) {
+            [viewLayer replaceSublayer:oldLayer with:m_DisplayLayer];
+        }
+        else {
+            [viewLayer addSublayer:m_DisplayLayer];
+        }
+
+        // Wait for another IDR frame
+        m_NeedsIdr = true;
+
+        delete m_SpsData;
+        delete m_PpsData;
+        delete m_VpsData;
+
+        m_SpsData = m_PpsData = m_VpsData = nullptr;
+    }
+
+    void updateBufferForRange(CMBlockBufferRef existingBuffer, unsigned char* data, int offset, int nalLength)
+    {
+        OSStatus status;
+        size_t oldOffset = CMBlockBufferGetDataLength(existingBuffer);
+
+        // If we're at index 1 (first NALU in frame), enqueue this buffer to the memory block
+        // so it can handle freeing it when the block buffer is destroyed
+        if (offset == 1) {
+            int dataLength = nalLength - NALU_START_PREFIX_SIZE;
+
+            // Pass the real buffer pointer directly (no offset)
+            // This will give it to the block buffer to free when it's released.
+            // All further calls to CMBlockBufferAppendMemoryBlock will do so
+            // at an offset and will not be asking the buffer to be freed.
+            status = CMBlockBufferAppendMemoryBlock(existingBuffer, data,
+                                                    nalLength + 1, // Add 1 for the offset we decremented
+                                                    kCFAllocatorDefault,
+                                                    NULL, 0, nalLength + 1, 0);
+            if (status != noErr) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                             "CMBlockBufferReplaceDataBytes failed: %d",
+                             (int)status);
+                return;
+            }
+
+            // Write the length prefix to existing buffer
+            const uint8_t lengthBytes[] = {(uint8_t)(dataLength >> 24), (uint8_t)(dataLength >> 16),
+                (uint8_t)(dataLength >> 8), (uint8_t)dataLength};
+            status = CMBlockBufferReplaceDataBytes(lengthBytes, existingBuffer,
+                                                   oldOffset, NAL_LENGTH_PREFIX_SIZE);
+            if (status != noErr) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                             "CMBlockBufferReplaceDataBytes failed: %d",
+                             (int)status);
+                return;
+            }
+        } else {
+            // Append a 4 byte buffer to this block for the length prefix
+            status = CMBlockBufferAppendMemoryBlock(existingBuffer, NULL,
+                                                    NAL_LENGTH_PREFIX_SIZE,
+                                                    kCFAllocatorDefault, NULL, 0,
+                                                    NAL_LENGTH_PREFIX_SIZE, 0);
+            if (status != noErr) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                             "CMBlockBufferAppendMemoryBlock failed: %d",
+                             (int)status);
+                return;
+            }
+
+            // Write the length prefix to the new buffer
+            int dataLength = nalLength - NALU_START_PREFIX_SIZE;
+            const uint8_t lengthBytes[] = {(uint8_t)(dataLength >> 24), (uint8_t)(dataLength >> 16),
+                (uint8_t)(dataLength >> 8), (uint8_t)dataLength};
+            status = CMBlockBufferReplaceDataBytes(lengthBytes, existingBuffer,
+                                                   oldOffset, NAL_LENGTH_PREFIX_SIZE);
+            if (status != noErr) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                             "CMBlockBufferReplaceDataBytes failed: %d",
+                             (int)status);
+                return;
+            }
+
+            // Attach the buffer by reference to the block buffer
+            status = CMBlockBufferAppendMemoryBlock(existingBuffer, &data[offset+NALU_START_PREFIX_SIZE],
+                                                    dataLength,
+                                                    kCFAllocatorNull, // Don't deallocate data on free
+                                                    NULL, 0, dataLength, 0);
+            if (status != noErr) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                             "CMBlockBufferReplaceDataBytes failed: %d",
+                             (int)status);
+                return;
+            }
+        }
+    }
+
+    AVSampleBufferDisplayLayer* m_DisplayLayer;
+    CMVideoFormatDescriptionRef m_FormatDesc;
+    int m_VideoFormat;
+    QByteArray* m_SpsData;
+    QByteArray* m_PpsData;
+    QByteArray* m_VpsData;
+    NSView* m_View;
+    bool m_NeedsIdr;
+    CVDisplayLinkRef m_DisplayLink;
+    uint64_t m_VsyncTime, m_LastVsyncTime;
+    int m_FrameCountOnVsync[FUTURE_FRAMES_IN_VSYNC];
+    SDL_SpinLock m_VsyncStatsLock;
+};
+
+IVideoDecoder* AVFoundationDecoderFactory::createDecoder() {
+    return new AVFoundationDecoder();
+}
@@ -1,4 +1,4 @@
-#include <initguid.h>
+#include <Initguid.h>
 #include "dxva2.h"

 #include <Limelight.h>
@@ -8,16 +8,16 @@ DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68,0x4951,0x4C54,0x88,0xFE,0xAB,0x
 #define SAFE_COM_RELEASE(x) if (x) { (x)->Release(); }

 DXVA2Renderer::DXVA2Renderer() :
+    m_FrameIndex(0),
+    m_SurfacesUsed(0),
    m_SdlRenderer(nullptr),
    m_DecService(nullptr),
    m_Decoder(nullptr),
-    m_SurfacesUsed(0),
    m_Pool(nullptr),
    m_Device(nullptr),
    m_RenderTarget(nullptr),
    m_ProcService(nullptr),
-    m_Processor(nullptr),
-    m_FrameIndex(0)
+    m_Processor(nullptr)
 {
    RtlZeroMemory(m_DecSurfaces, sizeof(m_DecSurfaces));
    RtlZeroMemory(&m_DXVAContext, sizeof(m_DXVAContext));
@@ -87,9 +87,6 @@ bool DXVA2Renderer::prepareDecoderContext(AVCodecContext* context)
        return false;
    }

-    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                "Using DXVA2 accelerated renderer");
-
    return true;
 }

@@ -104,8 +101,8 @@ int DXVA2Renderer::ffGetBuffer2(AVCodecContext* context, AVFrame* frame, int)

    frame->data[3] = frame->buf[0]->data;
    frame->format = AV_PIX_FMT_DXVA2_VLD;
-    frame->width = me->m_VideoWidth;
-    frame->height = me->m_VideoHeight;
+    frame->width = me->m_Width;
+    frame->height = me->m_Height;

    return 0;
 }
@@ -221,8 +218,8 @@ bool DXVA2Renderer::initializeDecoder()
        alignment = 16;
    }

-    hr = m_DecService->CreateSurface(FFALIGN(m_VideoWidth, alignment),
-                                     FFALIGN(m_VideoHeight, alignment),
+    hr = m_DecService->CreateSurface(FFALIGN(m_Width, alignment),
+                                     FFALIGN(m_Height, alignment),
                                     ARRAYSIZE(m_DecSurfaces) - 1,
                                     m_Desc.Format,
                                     D3DPOOL_DEFAULT,
@@ -265,9 +262,6 @@ bool DXVA2Renderer::initializeRenderer()
    D3DSURFACE_DESC renderTargetDesc;
    m_RenderTarget->GetDesc(&renderTargetDesc);

-    m_DisplayWidth = renderTargetDesc.Width;
-    m_DisplayHeight = renderTargetDesc.Height;
-
    hr = DXVA2CreateVideoService(m_Device, IID_IDirectXVideoProcessorService,
                                 reinterpret_cast<void**>(&m_ProcService));

@@ -308,14 +302,6 @@ bool DXVA2Renderer::initializeRenderer()
                            caps.VideoProcessorOperations);
                continue;
            }
-            else if (!(caps.VideoProcessorOperations & DXVA2_VideoProcess_StretchX) ||
-                     !(caps.VideoProcessorOperations & DXVA2_VideoProcess_StretchY)) {
-                SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
-                            "Device %d can't stretch video: %x",
-                            i,
-                            caps.VideoProcessorOperations);
-                continue;
-            }

            m_ProcService->GetProcAmpRange(guids[i], &m_Desc, renderTargetDesc.Format, DXVA2_ProcAmp_Brightness, &m_BrightnessRange);
            m_ProcService->GetProcAmpRange(guids[i], &m_Desc, renderTargetDesc.Format, DXVA2_ProcAmp_Contrast, &m_ContrastRange);
@@ -355,17 +341,21 @@ bool DXVA2Renderer::initializeRenderer()
 bool DXVA2Renderer::initialize(SDL_Window* window, int videoFormat, int width, int height)
 {
    m_VideoFormat = videoFormat;
-    m_VideoWidth = width;
-    m_VideoHeight = height;
+    m_Width = width;
+    m_Height = height;

    // FFmpeg will be decoding on different threads than the main thread that we're
    // currently running on right now. We must set this hint so SDL will pass
    // D3DCREATE_MULTITHREADED to IDirect3D9::CreateDevice().
    SDL_SetHint(SDL_HINT_RENDER_DIRECT3D_THREADSAFE, "1");

-    // We require full-screen desktop mode to avoid having to enable V-sync
-    // to synchronize frame delivery (which has a much higher latency penalty).
-    m_SdlRenderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+    // We want VSYNC when running in full-screen. DWM will give us
+    // tear-free video when running composited (windowed) without any
+    // extra latency waiting for VSYNC.
+    m_SdlRenderer = SDL_CreateRenderer(window, -1,
+                                       SDL_RENDERER_ACCELERATED |
+                                       ((SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN) ?
+                                           SDL_RENDERER_PRESENTVSYNC : 0));
    if (!m_SdlRenderer) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                     "SDL_CreateRenderer() failed: %s",
@@ -375,20 +365,15 @@ bool DXVA2Renderer::initialize(SDL_Window* window, int videoFormat, int width, i

    m_Device = SDL_RenderGetD3D9Device(m_SdlRenderer);

-    // Draw a black frame until the video stream starts rendering
-    SDL_SetRenderDrawColor(m_SdlRenderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
-    SDL_RenderClear(m_SdlRenderer);
-    SDL_RenderPresent(m_SdlRenderer);
-
    RtlZeroMemory(&m_Desc, sizeof(m_Desc));
-    m_Desc.SampleWidth = m_VideoWidth;
-    m_Desc.SampleHeight = m_VideoHeight;
-    m_Desc.SampleFormat.VideoChromaSubsampling = DXVA2_VideoChromaSubsampling_Unknown;
-    m_Desc.SampleFormat.NominalRange = DXVA2_NominalRange_Unknown;
-    m_Desc.SampleFormat.VideoTransferMatrix = DXVA2_VideoTransferMatrix_Unknown;
-    m_Desc.SampleFormat.VideoLighting = DXVA2_VideoLighting_Unknown;
-    m_Desc.SampleFormat.VideoPrimaries = DXVA2_VideoPrimaries_Unknown;
-    m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_Unknown;
+    m_Desc.SampleWidth = m_Width;
+    m_Desc.SampleHeight = m_Height;
+    m_Desc.SampleFormat.VideoChromaSubsampling = DXVA2_VideoChromaSubsampling_ProgressiveChroma;
+    m_Desc.SampleFormat.NominalRange = DXVA2_NominalRange_0_255;
+    m_Desc.SampleFormat.VideoTransferMatrix = DXVA2_VideoTransferMatrix_BT709;
+    m_Desc.SampleFormat.VideoLighting = DXVA2_VideoLighting_dim;
+    m_Desc.SampleFormat.VideoPrimaries = DXVA2_VideoPrimaries_BT709;
+    m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_709;
    m_Desc.SampleFormat.SampleFormat = DXVA2_SampleProgressiveFrame;
    m_Desc.Format = (D3DFORMAT)MAKEFOURCC('N','V','1','2');

@@ -408,95 +393,23 @@ void DXVA2Renderer::renderFrame(AVFrame* frame)
    IDirect3DSurface9* surface = reinterpret_cast<IDirect3DSurface9*>(frame->data[3]);
    HRESULT hr;

-    switch (frame->color_range) {
-    case AVCOL_RANGE_JPEG:
-        m_Desc.SampleFormat.NominalRange = DXVA2_NominalRange_0_255;
-        break;
-    case AVCOL_RANGE_MPEG:
-        m_Desc.SampleFormat.NominalRange = DXVA2_NominalRange_16_235;
+    hr = m_Device->TestCooperativeLevel();
+    switch (hr) {
+    case D3D_OK:
        break;
+    case D3DERR_DEVICELOST:
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                     "D3D device lost!");
+        return;
+    case D3DERR_DEVICENOTRESET:
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                     "D3D device not reset!");
+        return;
    default:
-        m_Desc.SampleFormat.NominalRange = DXVA2_NominalRange_Unknown;
-        break;
-    }
-
-    switch (frame->color_primaries) {
-    case AVCOL_PRI_BT709:
-        m_Desc.SampleFormat.VideoPrimaries = DXVA2_VideoPrimaries_BT709;
-        break;
-    case AVCOL_PRI_BT470M:
-        m_Desc.SampleFormat.VideoPrimaries = DXVA2_VideoPrimaries_BT470_2_SysM;
-        break;
-    case AVCOL_PRI_BT470BG:
-        m_Desc.SampleFormat.VideoPrimaries = DXVA2_VideoPrimaries_BT470_2_SysBG;
-        break;
-    case AVCOL_PRI_SMPTE170M:
-        m_Desc.SampleFormat.VideoPrimaries = DXVA2_VideoPrimaries_SMPTE170M;
-        break;
-    case AVCOL_PRI_SMPTE240M:
-        m_Desc.SampleFormat.VideoPrimaries = DXVA2_VideoPrimaries_SMPTE240M;
-        break;
-    default:
-        m_Desc.SampleFormat.VideoPrimaries = DXVA2_VideoPrimaries_Unknown;
-        break;
-    }
-
-    switch (frame->color_trc) {
-    case AVCOL_TRC_SMPTE170M:
-    case AVCOL_TRC_BT709:
-        m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_709;
-        break;
-    case AVCOL_TRC_LINEAR:
-        m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_10;
-        break;
-    case AVCOL_TRC_GAMMA22:
-        m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_22;
-        break;
-    case AVCOL_TRC_GAMMA28:
-        m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_28;
-        break;
-    case AVCOL_TRC_SMPTE240M:
-        m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_240M;
-        break;
-    case AVCOL_TRC_IEC61966_2_1:
-        m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_sRGB;
-        break;
-    default:
-        m_Desc.SampleFormat.VideoTransferFunction = DXVA2_VideoTransFunc_Unknown;
-        break;
-    }
-
-    switch (frame->colorspace) {
-    case AVCOL_SPC_BT709:
-        m_Desc.SampleFormat.VideoTransferMatrix = DXVA2_VideoTransferMatrix_BT709;
-        break;
-    case AVCOL_SPC_BT470BG:
-    case AVCOL_SPC_SMPTE170M:
-        m_Desc.SampleFormat.VideoTransferMatrix = DXVA2_VideoTransferMatrix_BT601;
-        break;
-    case AVCOL_SPC_SMPTE240M:
-        m_Desc.SampleFormat.VideoTransferMatrix = DXVA2_VideoTransferMatrix_SMPTE240M;
-        break;
-    default:
-        m_Desc.SampleFormat.VideoTransferMatrix = DXVA2_VideoTransferMatrix_Unknown;
-        break;
-    }
-
-    switch (frame->chroma_location) {
-    case AVCHROMA_LOC_LEFT:
-        m_Desc.SampleFormat.VideoChromaSubsampling = DXVA2_VideoChromaSubsampling_Horizontally_Cosited |
-                                                     DXVA2_VideoChromaSubsampling_Vertically_AlignedChromaPlanes;
-        break;
-    case AVCHROMA_LOC_CENTER:
-        m_Desc.SampleFormat.VideoChromaSubsampling = DXVA2_VideoChromaSubsampling_Vertically_AlignedChromaPlanes;
-        break;
-    case AVCHROMA_LOC_TOPLEFT:
-        m_Desc.SampleFormat.VideoChromaSubsampling = DXVA2_VideoChromaSubsampling_Horizontally_Cosited |
-                                                     DXVA2_VideoChromaSubsampling_Vertically_Cosited;
-        break;
-    default:
-        m_Desc.SampleFormat.VideoChromaSubsampling = DXVA2_VideoChromaSubsampling_Unknown;
-        break;
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                     "Unknown D3D error: %x",
+                     hr);
+        return;
    }

    DXVA2_VideoSample sample = {};
@@ -505,31 +418,18 @@ void DXVA2Renderer::renderFrame(AVFrame* frame)
    sample.SrcSurface = surface;
    sample.SrcRect.right = m_Desc.SampleWidth;
    sample.SrcRect.bottom = m_Desc.SampleHeight;
+    sample.DstRect = sample.SrcRect;
    sample.SampleFormat = m_Desc.SampleFormat;
    sample.PlanarAlpha = DXVA2_Fixed32OpaqueAlpha();

-    // Center in frame and preserve aspect ratio
-    double srcAspectRatio = (double)m_Desc.SampleWidth / (double)m_Desc.SampleHeight;
-    double dstAspectRatio = (double)m_DisplayWidth / (double)m_DisplayHeight;
-    if (dstAspectRatio < srcAspectRatio) {
-        // Greater height per width
-        int drawHeight = (int)(m_DisplayWidth / srcAspectRatio);
-        sample.DstRect.top = (m_DisplayHeight - drawHeight) / 2;
-        sample.DstRect.bottom = sample.DstRect.bottom + drawHeight;
-        sample.DstRect.right = m_DisplayWidth;
-    }
-    else {
-        // Greater width per height
-        int drawWidth = (int)(m_DisplayHeight * srcAspectRatio);
-        sample.DstRect.bottom = m_DisplayHeight;
-        sample.DstRect.left = (m_DisplayWidth - drawWidth) / 2;
-        sample.DstRect.right = sample.DstRect.left + drawWidth;
-    }
-
    DXVA2_VideoProcessBltParams bltParams = {};

    bltParams.TargetFrame = m_FrameIndex++;
-    bltParams.TargetRect = sample.DstRect;
+    bltParams.TargetRect.right = m_Desc.SampleWidth;
+    bltParams.TargetRect.bottom = m_Desc.SampleHeight;
+    bltParams.BackgroundColor.Y = 0x1000;
+    bltParams.BackgroundColor.Cb = 0x8000;
+    bltParams.BackgroundColor.Cr = 0x8000;
    bltParams.BackgroundColor.Alpha = 0xFFFF;

    bltParams.DestFormat.SampleFormat = DXVA2_SampleProgressiveFrame;
@@ -541,33 +441,12 @@ void DXVA2Renderer::renderFrame(AVFrame* frame)

    bltParams.Alpha = DXVA2_Fixed32OpaqueAlpha();

-    if (SDL_RenderClear(m_SdlRenderer) != 0) {
-        SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
-                    "SDL_RenderClear() failed: %s",
-                    SDL_GetError());
-        av_frame_free(&frame);
-
-        // We're going to cheat a little bit here. It seems SDL's
-        // renderer may flake out in scenarios like moving the window
-        // between monitors, so generate a synthetic reset event for
-        // the main loop to consume.
-        SDL_Event event;
-        event.type = SDL_RENDER_TARGETS_RESET;
-        SDL_PushEvent(&event);
-
-        return;
-    }
-
    hr = m_Processor->VideoProcessBlt(m_RenderTarget, &bltParams, &sample, 1, nullptr);
-    av_frame_free(&frame);
-
    if (FAILED(hr)) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                     "VideoProcessBlt() failed: %x",
                     hr);
    }

-    // We must try to present to trigger SDL's logic to recover the render target,
-    // even if VideoProcessBlt() fails.
-    SDL_RenderPresent(m_SdlRenderer);
+    m_Device->Present(nullptr, nullptr, nullptr, nullptr);
 }
@@ -39,11 +39,8 @@ private:
                                   const enum AVPixelFormat* pixFmts);

    int m_VideoFormat;
-    int m_VideoWidth;
-    int m_VideoHeight;
-
-    int m_DisplayWidth;
-    int m_DisplayHeight;
+    int m_Width;
+    int m_Height;

    SDL_Renderer* m_SdlRenderer;

@@ -1,7 +1,5 @@
 #include "renderer.h"

-#include <Limelight.h>
-
 SdlRenderer::SdlRenderer()
    : m_Renderer(nullptr),
      m_Texture(nullptr)
@@ -23,26 +21,14 @@ SdlRenderer::~SdlRenderer()
 bool SdlRenderer::prepareDecoderContext(AVCodecContext*)
 {
    /* Nothing to do */
-
-    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                "Using SDL software renderer");
-
    return true;
 }

 bool SdlRenderer::initialize(SDL_Window* window,
-                             int videoFormat,
+                             int,
                             int width,
                             int height)
 {
-    // NOTE: HEVC currently uses only 1 slice regardless of what
-    // we provide in CAPABILITY_SLICES_PER_FRAME(), so we should
-    // never use it for software decoding (unless common-c starts
-    // respecting it for HEVC).
-    if (videoFormat != VIDEO_FORMAT_H264) {
-        return false;
-    }
-
    m_Renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
    if (!m_Renderer) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
@@ -55,11 +41,6 @@ bool SdlRenderer::initialize(SDL_Window* window,
    // logical rendering surface size is equal to the stream size
    SDL_RenderSetLogicalSize(m_Renderer, width, height);

-    // Draw a black frame until the video stream starts rendering
-    SDL_SetRenderDrawColor(m_Renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
-    SDL_RenderClear(m_Renderer);
-    SDL_RenderPresent(m_Renderer);
-
    m_Texture = SDL_CreateTexture(m_Renderer,
                                  SDL_PIXELFORMAT_YV12,
                                  SDL_TEXTUREACCESS_STREAMING,
@@ -84,10 +65,6 @@ void SdlRenderer::renderFrame(AVFrame* frame)
                         frame->linesize[1],
                         frame->data[2],
                         frame->linesize[2]);
-
-    // Done with the frame now
-    av_frame_free(&frame);
-
    SDL_RenderClear(m_Renderer);
    SDL_RenderCopy(m_Renderer, m_Texture, nullptr, nullptr);
    SDL_RenderPresent(m_Renderer);
@@ -1,136 +0,0 @@
-#include "vaapi.h"
-
-#include <dlfcn.h>
-
-#include <SDL_syswm.h>
-
-VAAPIRenderer::VAAPIRenderer()
-    : m_HwContext(nullptr),
-      m_X11VaLibHandle(nullptr),
-      m_vaPutSurface(nullptr)
-{
-
-}
-
-VAAPIRenderer::~VAAPIRenderer()
-{
-    if (m_HwContext != nullptr) {
-        av_buffer_unref(&m_HwContext);
-    }
-
-    if (m_X11VaLibHandle != nullptr) {
-        dlclose(m_X11VaLibHandle);
-    }
-}
-
-bool
-VAAPIRenderer::initialize(SDL_Window* window, int, int width, int height)
-{
-    int err;
-    SDL_SysWMinfo info;
-
-    m_VideoWidth = width;
-    m_VideoHeight = height;
-
-    SDL_GetWindowSize(window, &m_DisplayWidth, &m_DisplayHeight);
-
-    SDL_VERSION(&info.version);
-
-    if (!SDL_GetWindowWMInfo(window, &info)) {
-        SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
-                    "SDL_GetWindowWMInfo() failed: %s",
-                    SDL_GetError());
-        return false;
-    }
-
-    SDL_assert(info.subsystem == SDL_SYSWM_X11);
-
-    if (info.subsystem == SDL_SYSWM_X11) {
-        m_XWindow = info.info.x11.window;
-
-        m_X11VaLibHandle = dlopen("libva-x11.so", RTLD_LAZY);
-        if (!m_X11VaLibHandle) {
-            SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
-                        "dlopen(libva.so) failed: %s",
-                        dlerror());
-            return false;
-        }
-
-        m_vaPutSurface = (vaPutSurface_t)dlsym(m_X11VaLibHandle, "vaPutSurface");
-    }
-    else if (info.subsystem == SDL_SYSWM_WAYLAND) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "VAAPI backend does not currently support Wayland");
-        return false;
-    }
-    else {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "Unsupported VAAPI rendering subsystem: %d",
-                     info.subsystem);
-        return false;
-    }
-
-
-    err = av_hwdevice_ctx_create(&m_HwContext,
-                                 AV_HWDEVICE_TYPE_VAAPI,
-                                 nullptr, nullptr, 0);
-    if (err < 0) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "Failed to create VAAPI context: %d",
-                     err);
-        return false;
-    }
-
-    return true;
-}
-
-bool
-VAAPIRenderer::prepareDecoderContext(AVCodecContext* context)
-{
-    context->hw_device_ctx = av_buffer_ref(m_HwContext);
-
-    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                "Using VAAPI accelerated renderer");
-
-    return true;
-}
-
-void
-VAAPIRenderer::renderFrame(AVFrame* frame)
-{
-    VASurfaceID surface = (VASurfaceID)(uintptr_t)frame->data[3];
-    AVHWDeviceContext* deviceContext = (AVHWDeviceContext*)m_HwContext->data;
-    AVVAAPIDeviceContext* vaDeviceContext = (AVVAAPIDeviceContext*)deviceContext->hwctx;
-
-    // Center in frame and preserve aspect ratio
-    int x, y, width, height;
-    double srcAspectRatio = (double)m_VideoWidth / (double)m_VideoHeight;
-    double dstAspectRatio = (double)m_DisplayWidth / (double)m_DisplayHeight;
-    if (dstAspectRatio < srcAspectRatio) {
-        // Greater height per width
-        int drawHeight = (int)(m_DisplayWidth / srcAspectRatio);
-        y = (m_DisplayHeight - drawHeight) / 2;
-        height = drawHeight;
-        x = 0;
-        width = m_DisplayWidth;
-    }
-    else {
-        // Greater width per height
-        int drawWidth = (int)(m_DisplayHeight * srcAspectRatio);
-        y = 0;
-        height = m_DisplayHeight;
-        x = (m_DisplayWidth - drawWidth) / 2;
-        width = drawWidth;
-    }
-
-    m_vaPutSurface(vaDeviceContext->display,
-                   surface,
-                   m_XWindow,
-                   0, 0,
-                   m_VideoWidth, m_VideoHeight,
-                   x, y,
-                   width, height,
-                   NULL, 0, 0);
-
-    av_frame_free(&frame);
-}
@@ -1,50 +0,0 @@
-#pragma once
-
-#include "renderer.h"
-
-extern "C" {
-#include <va/va.h>
-#include <va/va_x11.h>
-#include <libavutil/hwcontext_vaapi.h>
-}
-
-class VAAPIRenderer : public IFFmpegRenderer
-{
-    typedef VAStatus (*vaPutSurface_t)(
-        VADisplay dpy,
-        VASurfaceID surface,
-        Drawable draw, /* X Drawable */
-        short srcx,
-        short srcy,
-        unsigned short srcw,
-        unsigned short srch,
-        short destx,
-        short desty,
-        unsigned short destw,
-        unsigned short desth,
-        VARectangle *cliprects,
-        unsigned int number_cliprects,
-        unsigned int flags
-    );
-
-public:
-    VAAPIRenderer();
-    virtual ~VAAPIRenderer();
-    virtual bool initialize(SDL_Window* window,
-                            int videoFormat,
-                            int width,
-                            int height);
-    virtual bool prepareDecoderContext(AVCodecContext* context);
-    virtual void renderFrame(AVFrame* frame);
-
-private:
-    Window m_XWindow;
-    AVBufferRef* m_HwContext;
-    void* m_X11VaLibHandle;
-    vaPutSurface_t m_vaPutSurface;
-    int m_VideoWidth;
-    int m_VideoHeight;
-    int m_DisplayWidth;
-    int m_DisplayHeight;
-};
-
@@ -7,14 +7,9 @@
 #include <SDL_syswm.h>
 #include <Limelight.h>

-#include <QQueue>
-
 #import <Cocoa/Cocoa.h>
 #import <VideoToolbox/VideoToolbox.h>
 #import <AVFoundation/AVFoundation.h>
-#import <CoreVideo/CoreVideo.h>
-
-#define FRAME_HISTORY_ENTRIES 8

 class VTRenderer : public IFFmpegRenderer
 {
@@ -23,10 +18,9 @@ public:
        : m_HwContext(nullptr),
          m_DisplayLayer(nullptr),
          m_FormatDesc(nullptr),
-          m_View(nullptr),
-          m_DisplayLink(nullptr),
-          m_FrameQueueLock(0)
+          m_View(nullptr)
    {
+
    }

    virtual ~VTRenderer()
@@ -38,132 +32,8 @@ public:
        if (m_FormatDesc != nullptr) {
            CFRelease(m_FormatDesc);
        }
-
-        if (m_DisplayLink != nullptr) {
-            CVDisplayLinkStop(m_DisplayLink);
-            CVDisplayLinkRelease(m_DisplayLink);
-        }
-
-        while (!m_FrameQueue.isEmpty()) {
-            AVFrame* frame = m_FrameQueue.dequeue();
-            av_frame_free(&frame);
-        }
-
-        if (m_View != nullptr) {
-            [m_View removeFromSuperview];
-        }
    }

-    void drawFrame(uint64_t vsyncTime)
-    {
-        OSStatus status;
-
-        SDL_AtomicLock(&m_FrameQueueLock);
-
-        int frameDropTarget;
-
-        // If the queue length history entries are large, be strict
-        // about dropping excess frames.
-        frameDropTarget = 1;
-        for (int i = 0; i < m_FrameQueueHistory.count(); i++) {
-            if (m_FrameQueueHistory[i] <= 1) {
-                // Be lenient as long as the queue length
-                // resolves before the end of frame history
-                frameDropTarget = 3;
-            }
-        }
-
-        if (m_FrameQueueHistory.count() == FRAME_HISTORY_ENTRIES) {
-            m_FrameQueueHistory.dequeue();
-        }
-
-        m_FrameQueueHistory.enqueue(m_FrameQueue.count());
-
-        // Catch up if we're several frames ahead
-        while (m_FrameQueue.count() > frameDropTarget) {
-            AVFrame* frame = m_FrameQueue.dequeue();
-            av_frame_free(&frame);
-        }
-
-        if (m_FrameQueue.isEmpty()) {
-            SDL_AtomicUnlock(&m_FrameQueueLock);
-            return;
-        }
-
-        // Grab the first frame
-        AVFrame* frame = m_FrameQueue.dequeue();
-        SDL_AtomicUnlock(&m_FrameQueueLock);
-
-        CVPixelBufferRef pixBuf = reinterpret_cast<CVPixelBufferRef>(frame->data[3]);
-
-        // If the format has changed or doesn't exist yet, construct it with the
-        // pixel buffer data
-        if (!m_FormatDesc || !CMVideoFormatDescriptionMatchesImageBuffer(m_FormatDesc, pixBuf)) {
-            if (m_FormatDesc != nullptr) {
-                CFRelease(m_FormatDesc);
-            }
-            status = CMVideoFormatDescriptionCreateForImageBuffer(kCFAllocatorDefault,
-                                                                  pixBuf, &m_FormatDesc);
-            if (status != noErr) {
-                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                             "CMVideoFormatDescriptionCreateForImageBuffer() failed: %d",
-                             status);
-                av_frame_free(&frame);
-                return;
-            }
-        }
-
-        // Queue this sample for the next v-sync
-        CMSampleTimingInfo timingInfo = {
-            .duration = kCMTimeInvalid,
-            .decodeTimeStamp = kCMTimeInvalid,
-            .presentationTimeStamp = CMTimeMake(vsyncTime, 1000 * 1000 * 1000)
-        };
-
-        CMSampleBufferRef sampleBuffer;
-        status = CMSampleBufferCreateReadyWithImageBuffer(kCFAllocatorDefault,
-                                                          pixBuf,
-                                                          m_FormatDesc,
-                                                          &timingInfo,
-                                                          &sampleBuffer);
-        if (status != noErr) {
-            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                         "CMSampleBufferCreateReadyWithImageBuffer() failed: %d",
-                         status);
-            av_frame_free(&frame);
-            return;
-        }
-
-        [m_DisplayLayer enqueueSampleBuffer:sampleBuffer];
-
-        CFRelease(sampleBuffer);
-        av_frame_free(&frame);
-    }
-
-    static
-    CVReturn
-    displayLinkOutputCallback(
-        CVDisplayLinkRef,
-        const CVTimeStamp* now,
-        const CVTimeStamp* /* vsyncTime */,
-        CVOptionFlags,
-        CVOptionFlags*,
-        void *displayLinkContext)
-    {
-        VTRenderer* me = reinterpret_cast<VTRenderer*>(displayLinkContext);
-
-        // In my testing on macOS 10.13, this callback is invoked about 24 ms
-        // prior to the specified v-sync time (now - vsyncTime). Since this is
-        // greater than the standard v-sync interval (16 ms = 60 FPS), we will
-        // draw using the current host time, rather than the actual v-sync target
-        // time. Because the CVDisplayLink is in sync with the actual v-sync
-        // interval, even if many ms prior, we can safely use the current host time
-        // and get a consistent callback for each v-sync. This reduces video latency
-        // by at least 1 frame vs. rendering with the actual vsyncTime.
-        me->drawFrame(now->hostTime);
-
-        return kCVReturnSuccess;
-    }

    virtual bool initialize(SDL_Window* window,
                            int videoFormat,
@@ -243,34 +113,60 @@ public:
            return false;
        }

-        CVDisplayLinkCreateWithActiveCGDisplays(&m_DisplayLink);
-        CVDisplayLinkSetOutputCallback(m_DisplayLink, displayLinkOutputCallback, this);
-        CVDisplayLinkStart(m_DisplayLink);
-
        return true;
    }

    virtual bool prepareDecoderContext(AVCodecContext* context) override
    {
        context->hw_device_ctx = av_buffer_ref(m_HwContext);
-
-        SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                    "Using VideoToolbox accelerated renderer");
-
        return true;
    }

    virtual void renderFrame(AVFrame* frame) override
    {
+        CVPixelBufferRef pixBuf = reinterpret_cast<CVPixelBufferRef>(frame->data[3]);
+        OSStatus status;
+
        if (m_DisplayLayer.status == AVQueuedSampleBufferRenderingStatusFailed) {
            SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
                        "Resetting failed AVSampleBufferDisplay layer");
            setupDisplayLayer();
        }

-        SDL_AtomicLock(&m_FrameQueueLock);
-        m_FrameQueue.enqueue(frame);
-        SDL_AtomicUnlock(&m_FrameQueueLock);
+        // If the format has changed or doesn't exist yet, construct it with the
+        // pixel buffer data
+        if (!m_FormatDesc || !CMVideoFormatDescriptionMatchesImageBuffer(m_FormatDesc, pixBuf)) {
+            status = CMVideoFormatDescriptionCreateForImageBuffer(kCFAllocatorDefault,
+                                                                  pixBuf, &m_FormatDesc);
+            if (status != noErr) {
+                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                             "CMVideoFormatDescriptionCreateForImageBuffer() failed: %d",
+                             status);
+                return;
+            }
+        }
+
+        CMSampleBufferRef sampleBuffer;
+        status = CMSampleBufferCreateReadyWithImageBuffer(kCFAllocatorDefault,
+                                                          pixBuf,
+                                                          m_FormatDesc,
+                                                          &kCMTimingInfoInvalid,
+                                                          &sampleBuffer);
+        if (status != noErr) {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                         "CMSampleBufferCreateReadyWithImageBuffer() failed: %d",
+                         status);
+            return;
+        }
+
+        CFArrayRef attachments = CMSampleBufferGetSampleAttachmentsArray(sampleBuffer, true);
+        CFMutableDictionaryRef dict = (CFMutableDictionaryRef)CFArrayGetValueAtIndex(attachments, 0);
+
+        CFDictionarySetValue(dict, kCMSampleAttachmentKey_DisplayImmediately, kCFBooleanTrue);
+
+        [m_DisplayLayer enqueueSampleBuffer:sampleBuffer];
+
+        CFRelease(sampleBuffer);
    }

 private:
@@ -296,10 +192,6 @@ private:
    AVSampleBufferDisplayLayer* m_DisplayLayer;
    CMVideoFormatDescriptionRef m_FormatDesc;
    NSView* m_View;
-    CVDisplayLinkRef m_DisplayLink;
-    QQueue<AVFrame*> m_FrameQueue;
-    QQueue<int> m_FrameQueueHistory;
-    SDL_SpinLock m_FrameQueueLock;
 };

 IFFmpegRenderer* VTRendererFactory::createRenderer() {
@@ -1,18 +1,10 @@
 #include <Limelight.h>
 #include "ffmpeg.h"

-#ifdef Q_OS_WIN32
+#ifdef _WIN32
 #include "ffmpeg-renderers/dxva2.h"
 #endif

-#ifdef Q_OS_DARWIN
-#include "ffmpeg-renderers/vt.h"
-#endif
-
-#ifdef HAVE_LIBVA
-#include "ffmpeg-renderers/vaapi.h"
-#endif
-
 bool FFmpegVideoDecoder::chooseDecoder(
        StreamingPreferences::VideoDecoderSelection vds,
        SDL_Window* window,
@@ -64,20 +56,10 @@ bool FFmpegVideoDecoder::chooseDecoder(

        // Look for acceleration types we support
        switch (config->device_type) {
-#ifdef Q_OS_WIN32
+#ifdef _WIN32
        case AV_HWDEVICE_TYPE_DXVA2:
            newRenderer = new DXVA2Renderer();
            break;
-#endif
-#ifdef Q_OS_DARWIN
-        case AV_HWDEVICE_TYPE_VIDEOTOOLBOX:
-            newRenderer = VTRendererFactory::createRenderer();
-            break;
-#endif
-#ifdef HAVE_LIBVA
-        case AV_HWDEVICE_TYPE_VAAPI:
-            newRenderer = new VAAPIRenderer();
-            break;
 #endif
        default:
            continue;
@@ -107,7 +89,6 @@ FFmpegVideoDecoder::FFmpegVideoDecoder()
      m_Renderer(nullptr)
 {
    av_init_packet(&m_Pkt);
-    SDL_AtomicSet(&m_QueuedFrames, 0);

    // Use linear filtering when renderer scaling is required
    SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1");
@@ -115,31 +96,14 @@ FFmpegVideoDecoder::FFmpegVideoDecoder()

 FFmpegVideoDecoder::~FFmpegVideoDecoder()
 {
-    // Drop any frames still queued to ensure
-    // they are properly freed.
-    SDL_Event event;
+    avcodec_close(m_VideoDecoderCtx);
+    av_free(m_VideoDecoderCtx);
+    m_VideoDecoderCtx = nullptr;

-    while (SDL_AtomicGet(&m_QueuedFrames) > 0) {
-        SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                    "Waiting for %d frames to return",
-                    SDL_AtomicGet(&m_QueuedFrames));
-
-        if (SDL_PeepEvents(&event,
-                           1,
-                           SDL_GETEVENT,
-                           SDL_USEREVENT,
-                           SDL_USEREVENT) == 1) {
-            dropFrame(&event.user);
-        }
-        else {
-            SDL_Delay(100);
-            SDL_PumpEvents();
-        }
-    }
-
-    avcodec_free_context(&m_VideoDecoderCtx);
+    m_HwDecodeCfg = nullptr;

    delete m_Renderer;
+    m_Renderer = nullptr;
 }

 bool FFmpegVideoDecoder::initialize(
@@ -244,9 +208,14 @@ int FFmpegVideoDecoder::submitDecodeUnit(PDECODE_UNIT du)

    err = avcodec_receive_frame(m_VideoDecoderCtx, frame);
    if (err == 0) {
-        // Queue the frame for rendering from the main thread
-        SDL_AtomicIncRef(&m_QueuedFrames);
-        queueFrame(frame);
+        SDL_Event event;
+
+        event.type = SDL_USEREVENT;
+        event.user.code = SDL_CODE_FRAME_READY;
+        event.user.data1 = frame;
+
+        // The main thread will handle freeing this
+        SDL_PushEvent(&event);
    }
    else {
        av_frame_free(&frame);
@@ -260,7 +229,7 @@ void FFmpegVideoDecoder::renderFrame(SDL_UserEvent* event)
 {
    AVFrame* frame = reinterpret_cast<AVFrame*>(event->data1);
    m_Renderer->renderFrame(frame);
-    SDL_AtomicDecRef(&m_QueuedFrames);
+    av_frame_free(&frame);
 }

 // Called on main thread
@@ -268,5 +237,4 @@ void FFmpegVideoDecoder::dropFrame(SDL_UserEvent* event)
 {
    AVFrame* frame = reinterpret_cast<AVFrame*>(event->data1);
    av_frame_free(&frame);
-    SDL_AtomicDecRef(&m_QueuedFrames);
 }
@@ -38,5 +38,4 @@ private:
    QByteArray m_DecodeBuffer;
    const AVCodecHWConfig* m_HwDecodeCfg;
    IFFmpegRenderer* m_Renderer;
-    SDL_atomic_t m_QueuedFrames;
 };
@@ -1,106 +0,0 @@
-#include "sl.h"
-
-SLVideoDecoder::SLVideoDecoder()
-    : m_VideoContext(nullptr),
-      m_VideoStream(nullptr)
-{
-
-}
-
-SLVideoDecoder::~SLVideoDecoder()
-{
-    if (m_VideoStream != nullptr) {
-        SLVideo_FreeStream(m_VideoStream);
-    }
-
-    if (m_VideoContext != nullptr) {
-        SLVideo_FreeContext(m_VideoContext);
-    }
-}
-
-bool
-SLVideoDecoder::isHardwareAccelerated()
-{
-    // SLVideo is always hardware accelerated
-    return true;
-}
-
-bool
-SLVideoDecoder::initialize(StreamingPreferences::VideoDecoderSelection vds,
-                           SDL_Window*,
-                           int videoFormat, int, int, int frameRate)
-{
-    // SLVideo only supports hardware decoding
-    if (vds == StreamingPreferences::VDS_FORCE_SOFTWARE) {
-        return false;
-    }
-
-    // SLVideo only supports H.264
-    if (videoFormat != VIDEO_FORMAT_H264) {
-        return false;
-    }
-
-    m_VideoContext = SLVideo_CreateContext();
-    if (!m_VideoContext) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SLVideo_CreateContext() failed");
-        return false;
-    }
-
-    // Create a low latency H.264 stream
-    m_VideoStream = SLVideo_CreateStream(m_VideoContext, k_ESLVideoFormatH264, 1);
-    if (!m_VideoStream) {
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "SLVideo_CreateStream() failed");
-        return false;
-    }
-
-    SLVideo_SetStreamTargetFramerate(m_VideoStream, frameRate, 1);
-
-    return true;
-}
-
-int
-SLVideoDecoder::submitDecodeUnit(PDECODE_UNIT du)
-{
-    int err;
-
-    err = SLVideo_BeginFrame(m_VideoStream, du->fullLength);
-    if (err < 0) {
-        SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
-                    "SLVideo_BeginFrame() failed: %d",
-                    err);
-
-        // Need an IDR frame to resync
-        return DR_NEED_IDR;
-    }
-
-    PLENTRY entry = du->bufferList;
-    while (entry != nullptr) {
-        err = SLVideo_WriteFrameData(m_VideoStream,
-                                     entry->data,
-                                     entry->length);
-        if (err < 0) {
-            SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
-                        "SLVideo_WriteFrameData() failed: %d",
-                        err);
-
-            // Need an IDR frame to resync
-            return DR_NEED_IDR;
-        }
-
-        entry = entry->next;
-    }
-
-    err = SLVideo_SubmitFrame(m_VideoStream);
-    if (err < 0) {
-        SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
-                    "SLVideo_SubmitFrame() failed: %d",
-                    err);
-
-        // Need an IDR frame to resync
-        return DR_NEED_IDR;
-    }
-
-    return DR_OK;
-}
@@ -1,28 +0,0 @@
-#pragma once
-
-#include "decoder.h"
-
-#include <SLVideo.h>
-
-class SLVideoDecoder : public IVideoDecoder
-{
-public:
-    SLVideoDecoder();
-    virtual ~SLVideoDecoder();
-    virtual bool initialize(StreamingPreferences::VideoDecoderSelection vds,
-                            SDL_Window* window,
-                            int videoFormat,
-                            int width,
-                            int height,
-                            int frameRate);
-    virtual bool isHardwareAccelerated();
-    virtual int submitDecodeUnit(PDECODE_UNIT du);
-
-    // Unused since rendering is done directly from the decode thread
-    virtual void renderFrame(SDL_UserEvent*) {}
-    virtual void dropFrame(SDL_UserEvent*) {}
-
-private:
-    CSLVideoContext* m_VideoContext;
-    CSLVideoStream* m_VideoStream;
-};
@@ -1,5 +1,5 @@
 #pragma once

 #define THROW_BAD_ALLOC_IF_NULL(x) \
-    if ((x) == nullptr) throw std::bad_alloc()
+    if ((x) == nullptr) throw new std::bad_alloc()

@@ -1,3 +0,0 @@
-SOURCES = main.cpp
-LIBS += -lSLVideo
-
@@ -1,7 +0,0 @@
-#include <SLVideo.h>
-
-int main()
-{
-    SLVideo_CreateContext();
-    return 0;
-}
@@ -1 +0,0 @@
-Versions/Current/Headers
@@ -1 +0,0 @@
-Versions/Current/Resources
@@ -1 +0,0 @@
-Versions/Current/SDL2
@@ -1,46 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>BuildMachineOSBuild</key>
-	<string>17C88</string>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>English</string>
-	<key>CFBundleExecutable</key>
-	<string>SDL2</string>
-	<key>CFBundleGetInfoString</key>
-	<string>http://www.libsdl.org</string>
-	<key>CFBundleIdentifier</key>
-	<string>org.libsdl.SDL2</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>Simple DirectMedia Layer</string>
-	<key>CFBundlePackageType</key>
-	<string>FMWK</string>
-	<key>CFBundleShortVersionString</key>
-	<string>2.0.8</string>
-	<key>CFBundleSignature</key>
-	<string>SDLX</string>
-	<key>CFBundleSupportedPlatforms</key>
-	<array>
-		<string>MacOSX</string>
-	</array>
-	<key>CFBundleVersion</key>
-	<string>2.0.8</string>
-	<key>DTCompiler</key>
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@@ -1 +0,0 @@
-A
--- a/Show More
+++ b/Show More