experimental WASM build

.gitignore

@@ -52,5 +52,6 @@ MuseScore_General_License.md
 MuseScore_General_Changelog.txt
 MuseScore_General_Readme.md
 VERSION
+SF_VERSION
 /mscore/data/mscore.aps
 /msvc.*

CMakeLists.txt

@@ -165,9 +165,9 @@ endif(BUILD_JACK)
 
 if (BUILD_AUTOUPDATE)
 
-    if (APPLE)
+    if (OS_IS_MAC)
         set(MAC_APPCAST_URL "")
-    endif (APPLE)
+    endif (OS_IS_MAC)
 
     include(SetupSparkle)
 endif(BUILD_AUTOUPDATE)

build/cmake/DownloadSoundFont.cmake

@@ -1,7 +1,7 @@
 
 
-set (SF_VERSION_REMOTE_FILE ${PROJECT_BINARY_DIR}/VERSION)
-set (SF_VERSION_LOCAL_FILE ${PROJECT_SOURCE_DIR}/share/sound/VERSION)
+set (SF_VERSION_REMOTE_FILE ${PROJECT_BINARY_DIR}/SF_VERSION)
+set (SF_VERSION_LOCAL_FILE ${PROJECT_SOURCE_DIR}/share/sound/SF_VERSION)
 set (DOWNLOAD_URL_ROOT "https://ftp.osuosl.org/pub/musescore/soundfont/MuseScore_General")
 set (SOUND_DIRECTORY ${PROJECT_SOURCE_DIR}/share/sound)
 

build/cmake/FindQt5.cmake

@@ -22,7 +22,6 @@ set(_components
     Svg
     Widgets
     PrintSupport
-    Concurrent
     OpenGL
     LinguistTools
   )
@@ -35,6 +34,13 @@ if (USE_WEBENGINE)
 	)
 endif(USE_WEBENGINE)
 
+if (NOT OS_IS_WASM)
+    set(_components
+      ${_components}
+      Concurrent
+    )
+endif()
+
 if (WIN32)
     set(_components
       ${_components}

build/cmake/GetCompilerInfo.cmake

@@ -4,7 +4,11 @@
 
 include(GetPlatformInfo)
 
-if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+if (OS_IS_WASM)
+
+    set(CC_IS_EMSCRIPTEN 1)
+
+elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
 
     set(CC_IS_CLANG 1)
 

build/cmake/GetPlatformInfo.cmake

@@ -1,6 +1,7 @@
 
-
-if (${CMAKE_HOST_SYSTEM_NAME} MATCHES "Windows")
+if(${CMAKE_CXX_COMPILER} MATCHES "/em\\+\\+(-[a-zA-Z0-9.])?$")
+    set(OS_IS_WASM 1)
+elseif(${CMAKE_HOST_SYSTEM_NAME} MATCHES "Windows")
     set(OS_IS_WIN 1)
 elseif(${CMAKE_HOST_SYSTEM_NAME} MATCHES "Linux")
     set(OS_IS_LIN 1)

build/cmake/SetupBuildEnvironment.cmake

@@ -59,6 +59,26 @@ elseif(CC_IS_CLANG)
     set(CMAKE_CXX_FLAGS_DEBUG   "-g")
     set(CMAKE_CXX_FLAGS_RELEASE "-O2")
 
+elseif(CC_IS_EMSCRIPTEN)
+    message(STATUS "Using Compiler Emscripten ${CMAKE_CXX_COMPILER_VERSION}")
+
+    set(EMCC_CMAKE_TOOLCHAIN "" CACHE FILEPATH "Path to EMCC CMake Emscripten.cmake")
+    set(EMCC_INCLUDE_PATH "." CACHE PATH "Path to EMCC include dir")
+    set(EMCC_COMPILE_FLAGS "--bind -o  .html")
+
+    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/public_html)
+    set(CMAKE_EXECUTABLE_SUFFIX ".html")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EMCC_COMPILE_FLAGS}")
+    set(CMAKE_TOOLCHAIN_FILE ${EMCC_CMAKE_TOOLCHAIN})
+    set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
+
+    #for QtCreator
+    include_directories(
+        ${EMCC_INCLUDE_PATH}
+        ${EMCC_INCLUDE_PATH}/libcxx
+        ${EMCC_INCLUDE_PATH}/libc
+    )
+
 else()
     message(FATAL_ERROR "Unsupported Compiler CMAKE_CXX_COMPILER_ID: ${CMAKE_CXX_COMPILER_ID}")
 endif()
@@ -84,11 +104,11 @@ endif()
 
 
 # APPLE specific
-if (APPLE)
+if (OS_IS_MAC)
       set(CMAKE_OSX_ARCHITECTURES x86_64)
       set(MACOSX_DEPLOYMENT_TARGET 10.10)
       set(CMAKE_OSX_DEPLOYMENT_TARGET 10.10)
-endif(APPLE)
+endif(OS_IS_MAC)
 
 
 #   string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE)
@@ -108,9 +128,9 @@ endif(APPLE)
 #   endif(CMAKE_BUILD_TYPE MATCHES "DEBUG")
 
 
-#if (APPLE)
+#if (OS_IS_MAC)
 
-#else (APPLE)
+#else (OS_IS_MAC)
 #   if (MSVC)
 #   # Set compiler options for VS2017/19 toolchain.
 #   # Note: /D_CRT_SECURE_NO WARNINGS disables warnings when using "non-secure" library functions like sscanf...

build/cmake/SetupFreetype.cmake

@@ -4,7 +4,7 @@
 ##
 
 if (USE_SYSTEM_FREETYPE)
-      if (APPLE)
+      if (OS_IS_MAC)
             PKGCONFIG1 (freetype2 2.5.2 FREETYPE_INCLUDE_DIRS FREETYPE_LIBDIR FREETYPE_LIBRARIES FREETYPE_CPP)
             if (FREETYPE_INCLUDE_DIRS)
                   STRING(REGEX REPLACE  "\"" "" FREETYPE_INCLUDE_DIRS ${FREETYPE_INCLUDE_DIRS})
@@ -13,9 +13,9 @@ if (USE_SYSTEM_FREETYPE)
             else (FREETYPE_INCLUDE_DIRS)
                   message(FATAL_ERROR "freetype >= 2.5.2 is required\n")
             endif (FREETYPE_INCLUDE_DIRS)
-      else (APPLE)
+      else (OS_IS_MAC)
             find_package(Freetype REQUIRED)
-      endif (APPLE)
+      endif (OS_IS_MAC)
 endif (USE_SYSTEM_FREETYPE)
 
 

build/module.cmake

@@ -48,7 +48,11 @@ if (NOT ${MODULE_QML_IMPORT} STREQUAL "")
     set(QML_IMPORT_PATH "${QML_IMPORT_PATH};${MODULE_QML_IMPORT}" CACHE STRING "QtCreator extra import paths for QML modules" FORCE)
 endif()
 
-add_library(${MODULE}) # STATIC/SHARED set global in the SetupBuildEnvironment.cmake
+if (CC_IS_EMSCRIPTEN)
+    add_library(${MODULE} OBJECT)
+else()
+    add_library(${MODULE}) # STATIC/SHARED set global in the SetupBuildEnvironment.cmake
+endif()
 
 if (BUILD_SHARED_LIBS)
     install(TARGETS ${MODULE} DESTINATION ${SHARED_LIBS_INSTALL_DESTINATION})

src/CMakeLists.txt

@@ -15,13 +15,16 @@ add_subdirectory(appshell)
 add_subdirectory(awl)
 add_subdirectory(audiofile)
 add_subdirectory(context)
-add_subdirectory(cloud)
 add_subdirectory(notation)
-add_subdirectory(importexport)
 add_subdirectory(userscores)
+
+if (NOT OS_IS_WASM)
+add_subdirectory(importexport)
+add_subdirectory(cloud)
 add_subdirectory(extensions)
 add_subdirectory(languages)
 add_subdirectory(plugins)
+endif()
 
 # Scenes common
 add_subdirectory(commonscene)
@@ -37,3 +40,7 @@ if (BUILD_UNIT_TESTS)
     add_subdirectory(userscores/tests)
     add_subdirectory(libmscore/tests)
 endif(BUILD_UNIT_TESTS)
+
+if (OS_IS_WASM)
+    add_subdirectory(wasmtest)
+endif()

src/appshell/appshell.cpp

@@ -63,10 +63,15 @@ int AppShell::run(int argc, char** argv, std::function<void()> moduleSetup)
     //! NOTE Move ownership to UiEngine
     framework::UiEngine::instance()->moveQQmlEngine(engine);
 
+#ifndef Q_OS_WASM
+    QString mainQmlFile = "/Main.qml";
+#else
+    QString mainQmlFile = "/main.wasm.qml";
+#endif
 #ifdef QML_LOAD_FROM_SOURCE
-    QUrl url(QString(appshell_QML_IMPORT) + "/Main.qml");
+    QUrl url(QString(appshell_QML_IMPORT) + mainQmlFile);
 #else
-    const QUrl url(QStringLiteral("qrc:/qml/Main.qml"));
+    const QUrl url(QStringLiteral("qrc:/qml") + mainQmlFile);
 #endif
 
     QObject::connect(engine, &QQmlApplicationEngine::objectCreated,

src/appshell/appshell.qrc

@@ -24,5 +24,6 @@
         <file>qml/DevTools/Plugins/PluginsTests.qml</file>
         <file>qml/DevTools/Gallery/GeneralComponentsGallery.qml</file>
         <file>qml/DevTools/Telemetry/TelemetryInfo.qml</file>
+        <file>qml/main.wasm.qml</file>
     </qresource>
 </RCC>

src/appshell/qml/Main.qml

@@ -14,7 +14,7 @@ Rectangle {
         id: windowLoader
         anchors.fill: parent
         onStatusChanged: {
-            item.anchors.fill = item.parent
+            if (item && item.anchors) item.anchors.fill = item ? item.parent : null
             item.visible = true
         }
     }

src/appshell/qml/main.wasm.qml

@@ -0,0 +1,40 @@
+import QtQuick 2.0
+import QtQuick.Controls 2.2
+import MuseScore.NotationScene 1.0
+import MuseScore.Playback 1.0
+
+ApplicationWindow {
+    id: window
+    width: 640
+    height: 480
+
+    visible: true
+    title: qsTr("Muse Score")
+
+    header: ToolBar {
+        contentHeight: 40
+
+        PlaybackToolBar {
+            id: playbackToolbar
+            anchors.top: parent.top
+            anchors.bottom: parent.bottom
+            anchors.left: parent.left
+            color: ui.theme.backgroundPrimaryColor
+        }
+
+        Label {
+            text: "position: "
+            anchors.centerIn: parent
+        }
+    }
+
+
+    NotationView {
+        id: notationView
+        anchors.fill: parent
+
+        Component.onCompleted: {
+        }
+    }
+
+}

src/cloud/internal/cloudmanager.cpp

@@ -861,7 +861,6 @@ void CloudManager::mediaUploadProgress(qint64 progress, qint64 total)
 void CloudManager::upload(const QString& path, int nid, const QString& title)
 {
     qDebug() << "file upload" << nid;
-
     ApiRequest* r = new ApiRequest(this);
     r->setPath("/score/upload-light")
     .setToken(m_accessToken);

src/cloud/internal/cloudmanager_p.h

@@ -21,10 +21,9 @@
 #define MU_CLOUD_CLOUDMANAGER_P_H
 
 #include <QUrlQuery>
-#include <QHttpMultiPart>
 #include <QNetworkReply>
 #include <QEventLoop>
-
+#include <QHttpMultiPart>
 #include "config.h"
 
 #ifdef USE_WEBENGINE

src/extensions/internal/extensionscontroller.cpp

@@ -19,8 +19,10 @@
 #include "extensionscontroller.h"
 
 #include <QBuffer>
+#include <QFile>
+#include <QJsonDocument>
+#include <QJsonParseError>
 #include <QtConcurrent>
-
 #include "log.h"
 #include "translation.h"
 #include "extensionserrors.h"
@@ -36,7 +38,6 @@ void ExtensionsController::init()
 {
     fileSystem()->makePath(configuration()->extensionsSharePath());
     fileSystem()->makePath(configuration()->extensionsDataPath());
-
     QtConcurrent::run(this, &ExtensionsController::th_refreshExtensions);
 }
 

src/framework/audio/CMakeLists.txt

@@ -37,6 +37,11 @@ elseif(OS_IS_MAC)
         ${CMAKE_CURRENT_LIST_DIR}/internal/platform/osx/osxaudiodriver.cpp
         ${CMAKE_CURRENT_LIST_DIR}/internal/platform/osx/osxaudiodriver.h
     )
+elseif(OS_IS_WASM)
+    set(DRIVER_SRC
+        ${CMAKE_CURRENT_LIST_DIR}/internal/platform/web/webaudiodriver.cpp
+        ${CMAKE_CURRENT_LIST_DIR}/internal/platform/web/webaudiodriver.h
+    )
 endif()
 
 set(MODULE_SRC

src/framework/audio/audiomodule.cpp

@@ -45,6 +45,10 @@
 #include "internal/platform/osx/osxaudiodriver.h"
 #endif
 
+#ifdef Q_OS_WASM
+#include "internal/platform/web/webaudiodriver.h"
+#endif
+
 using namespace mu::audio;
 using namespace mu::audio::worker;
 
@@ -76,6 +80,10 @@ void AudioModule::registerExports()
 #ifdef Q_OS_MACOS
     framework::ioc()->registerExport<IAudioDriver>(moduleName(), new OSXAudioDriver());
 #endif
+
+#ifdef Q_OS_WASM
+    framework::ioc()->registerExport<IAudioDriver>(moduleName(), new WebAudioDriver());
+#endif
 }
 
 void AudioModule::registerUiTypes()
@@ -100,7 +108,9 @@ void AudioModule::onInit()
         });
     });
 
+#ifndef Q_OS_WASM
     s_worker->run();
+#endif
 }
 
 void AudioModule::onDeinit()

src/framework/audio/internal/platform/web/webaudiodriver.cpp

@@ -0,0 +1,47 @@
+//=============================================================================
+//  MuseScore
+//  Music Composition & Notation
+//
+//  Copyright (C) 2020 MuseScore BVBA and others
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License version 2.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+#include "webaudiodriver.h"
+
+using namespace mu::audio;
+
+WebAudioDriver::WebAudioDriver()
+{
+}
+
+std::string WebAudioDriver::name() const
+{
+    return "MUAUDIO(WEB)";
+}
+
+bool WebAudioDriver::open(const Spec& spec, Spec* activeSpec)
+{
+    //TODO:
+    m_opened = true;
+    return m_opened;
+}
+
+void WebAudioDriver::close()
+{
+    //TODO:
+}
+
+bool WebAudioDriver::isOpened() const
+{
+    return m_opened;
+}