Add Carla support for MacOS (LMMS#4558)

Add Carla support for MacOS

.gitignore

@@ -1,6 +1,7 @@
 /build
 /target
 .*.sw?
+.DS_Store
 *~
 /CMakeLists.txt.user
 /plugins/zynaddsubfx/zynaddsubfx/ExternalPrograms/Controller/Makefile

.travis/osx..install.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-PACKAGES="cmake pkgconfig fftw libogg libvorbis lame libsndfile libsamplerate jack sdl libgig libsoundio stk fluid-synth portaudio node fltk"
+PACKAGES="cmake pkgconfig fftw libogg libvorbis lame libsndfile libsamplerate jack sdl libgig libsoundio stk fluid-synth portaudio node fltk carla"
 
 if [ $QT5 ]; then
 	PACKAGES="$PACKAGES qt5"

CMakeLists.txt

@@ -231,7 +231,11 @@ ENDIF(WANT_TAP)
 
 # check for CARLA
 IF(WANT_CARLA)
-	PKG_CHECK_MODULES(CARLA carla-standalone>=1.9.5)
+	PKG_CHECK_MODULES(CARLA carla-native-plugin)
+	# look for carla under old name
+	IF(NOT CARLA_FOUND)
+		PKG_CHECK_MODULES(CARLA carla-standalone>=1.9.5)
+	ENDIF()
 	IF(CARLA_FOUND)
 		SET(LMMS_HAVE_CARLA TRUE)
 		SET(STATUS_CARLA "OK")

cmake/apple/install_apple.sh.in

@@ -21,14 +21,7 @@ echo -e "$MSG_COLOR\n\nCreating App Bundle \"$APP\"...$COLOR_RESET"
 # Locate macdeployqt, assume homebrew & Qt5
 which macdeployqt > /dev/null 2>&1
 if [ $? -ne 0 ]; then
-  brew --prefix qt55 > /dev/null 2>&1
-  if [ $? -eq 0 ]; then
-    # Prefer Qt 5.5 (QTBUG-53533)
-    export PATH=$PATH:$(brew --prefix qt55)/bin
-  else
-    # Fallback Qt 5.6+
-  	export PATH=$PATH:$(brew --prefix qt5)/bin
-  fi
+  export PATH=$PATH:$(brew --prefix qt)/bin
 fi
 
 # Remove any old .app bundles
@@ -71,6 +64,17 @@ install_name_tool -change @rpath/libZynAddSubFxCore.dylib \
    @loader_path/../../$zynfmk \
   "$APP/Contents/$zynlib"
 
+# Replace @rpath with @loader_path for Carla
+# See also plugins/carlabase/CMakeLists.txt
+# This MUST be done BEFORE calling macdeployqt
+install_name_tool -change @rpath/libcarlabase.dylib \
+   @loader_path/libcarlabase.dylib \
+  "$APP/Contents/lib/lmms/libcarlapatchbay.so"
+
+install_name_tool -change @rpath/libcarlabase.dylib \
+  @loader_path/libcarlabase.dylib \
+  "$APP/Contents/lib/lmms/libcarlarack.so"
+
 # Link lmms binary
 _executables="${_executables} -executable=$APP/Contents/$zynbin"
 _executables="${_executables} -executable=$APP/Contents/$zynfmk"
@@ -90,6 +94,27 @@ done
 # Finalize .app
 macdeployqt "$APP" $_executables
 
+# Carla is a standalone plugin.  Remove library, look for it side-by-side LMMS.app
+# This MUST be done AFTER calling macdeployqt
+#
+# For example:
+#    /Applications/LMMS.app
+#    /Applications/Carla.app
+carlalibs=$(echo "@CARLA_LIBRARIES@"|tr ";" "\n")
+
+# Loop over all libcarlas, fix linking
+for file in "$APP/Contents/lib/lmms/"libcarla*; do
+   _thisfile="$APP/Contents/lib/lmms/${file##*/}"
+   for lib in $carlalibs; do
+     _oldpath="../../Frameworks/lib${lib}.dylib"
+     _newpath="Carla.app/Contents/MacOS/lib${lib}.dylib"
+     install_name_tool -change @loader_path/$_oldpath \
+       @executable_path/../../../$_newpath \
+       "$_thisfile"
+     rm -f "$APP/Contents/Frameworks/lib${lib}.dylib"
+   done
+done
+
 # Cleanup
 rm -rf "$APP/Contents/bin"
 echo -e "\nFinished.\n\n"

cmake/modules/BuildPlugin.cmake

@@ -73,7 +73,11 @@ MACRO(BUILD_PLUGIN PLUGIN_NAME)
 	INSTALL(TARGETS ${PLUGIN_NAME} LIBRARY DESTINATION "${PLUGIN_DIR}")
 
 	IF(LMMS_BUILD_APPLE)
-		SET_TARGET_PROPERTIES(${PLUGIN_NAME} PROPERTIES LINK_FLAGS "-bundle_loader \"${CMAKE_BINARY_DIR}/lmms\"")
+		IF ("${PLUGIN_LINK}" STREQUAL "SHARED")
+			SET_TARGET_PROPERTIES(${PLUGIN_NAME} PROPERTIES LINK_FLAGS "-undefined dynamic_lookup")
+		ELSE()
+			SET_TARGET_PROPERTIES(${PLUGIN_NAME} PROPERTIES LINK_FLAGS "-bundle_loader \"${CMAKE_BINARY_DIR}/lmms\"")
+		ENDIF()
 		ADD_DEPENDENCIES(${PLUGIN_NAME} lmms)
 	ENDIF(LMMS_BUILD_APPLE)
 	IF(LMMS_BUILD_WIN32)

plugins/carlabase/CMakeLists.txt

@@ -1,3 +1,11 @@
+# For MacOS, use "OLD" RPATH install_name behavior
+# This can be changed to "NEW" safely if install_apple.sh.in
+# is updated to relink libcarlabase.dylib.  MacOS 10.8 uses
+# cmake 3.9.6, so this can be done at any time.
+IF(NOT CMAKE_VERSION VERSION_LESS 3.9)
+  CMAKE_POLICY(SET CMP0068 OLD)
+ENDIF()
+
 if(LMMS_HAVE_CARLA)
         INCLUDE(BuildPlugin)
         INCLUDE_DIRECTORIES(${CARLA_INCLUDE_DIRS})

plugins/carlabase/carla.cpp

@@ -1,7 +1,7 @@
 /*
  * carla.cpp - Carla for LMMS
  *
- * Copyright (C) 2014 Filipe Coelho <[email protected]>
+ * Copyright (C) 2014-2018 Filipe Coelho <[email protected]>
  *
  * This file is part of LMMS - https://lmms.io
  *
@@ -24,9 +24,6 @@
 
 #include "carla.h"
 
-#define REAL_BUILD // FIXME this shouldn't be needed
-#include "CarlaHost.h"
-
 #include "Engine.h"
 #include "Song.h"
 #include "gui_templates.h"
@@ -132,14 +129,6 @@ static const char* host_ui_save_file(NativeHostHandle, bool isDir, const char* t
 
 // -----------------------------------------------------------------------
 
-CARLA_EXPORT
-const NativePluginDescriptor* carla_get_native_patchbay_plugin();
-
-CARLA_EXPORT
-const NativePluginDescriptor* carla_get_native_rack_plugin();
-
-// -----------------------------------------------------------------------
-
 CarlaInstrument::CarlaInstrument(InstrumentTrack* const instrumentTrack, const Descriptor* const descriptor, const bool isPatchbay)
     : Instrument(instrumentTrack, descriptor),
       kIsPatchbay(isPatchbay),
@@ -161,8 +150,9 @@ CarlaInstrument::CarlaInstrument(InstrumentTrack* const instrumentTrack, const D
     path.cdUp();
     resourcesPath = path.absolutePath() + "/share/carla/resources";
 #elif defined(CARLA_OS_MAC)
-    // assume standard install location
-    resourcesPath = "/Applications/Carla.app/Contents/MacOS/resources";
+    // parse prefix from dll filename
+    QDir path = QFileInfo(dllName).dir();
+    resourcesPath = path.absolutePath() + "/resources";
 #elif defined(CARLA_OS_WIN32) || defined(CARLA_OS_WIN64)
     // not yet supported
 #endif
@@ -254,7 +244,7 @@ void CarlaInstrument::handleUiClosed()
     emit uiClosed();
 }
 
-intptr_t CarlaInstrument::handleDispatcher(const NativeHostDispatcherOpcode opcode, const int32_t index, const intptr_t value, void* const ptr, const float opt)
+intptr_t CarlaInstrument::handleDispatcher(const NativeHostDispatcherOpcode opcode, const int32_t, const intptr_t, void* const, const float)
 {
     intptr_t ret = 0;
 
@@ -267,13 +257,10 @@ intptr_t CarlaInstrument::handleDispatcher(const NativeHostDispatcherOpcode opco
         qApp->processEvents();
         break;
     default:
-	break;
+        break;
     }
 
     return ret;
-
-    // unused for now
-    (void)index; (void)value; (void)ptr; (void)opt;
 }
 
 // -------------------------------------------------------------------
@@ -448,9 +435,12 @@ bool CarlaInstrument::handleMidiEvent(const MidiEvent& event, const MidiTime&, f
 
 PluginView* CarlaInstrument::instantiateView(QWidget* parent)
 {
+// Disable plugin focus per https://bugreports.qt.io/browse/QTBUG-30181
+#ifndef CARLA_OS_MAC
     if (QWidget* const window = parent->window())
         fHost.uiParentId = window->winId();
     else
+#endif
         fHost.uiParentId = 0;
 
     std::free((char*)fHost.uiName);

plugins/carlabase/carla.h

@@ -1,7 +1,7 @@
 /*
  * carla.h - Carla for LMMS
  *
- * Copyright (C) 2014 Filipe Coelho <[email protected]>
+ * Copyright (C) 2014-2018 Filipe Coelho <[email protected]>
  *
  * This file is part of LMMS - https://lmms.io
  *
@@ -27,7 +27,19 @@
 
 #include <QtCore/QMutex>
 
-#include "CarlaNative.h"
+#define REAL_BUILD // FIXME this shouldn't be needed
+#if CARLA_VERSION_HEX >= 0x010911
+    #include "CarlaNativePlugin.h"
+#else
+    #include "CarlaBackend.h"
+    #include "CarlaNative.h"
+    #include "CarlaUtils.h"
+    CARLA_EXPORT
+    const NativePluginDescriptor* carla_get_native_patchbay_plugin();
+
+    CARLA_EXPORT
+    const NativePluginDescriptor* carla_get_native_rack_plugin();
+#endif
 
 #include "Instrument.h"
 #include "InstrumentView.h"
@@ -44,7 +56,7 @@ class PLUGIN_EXPORT CarlaInstrument : public Instrument
     CarlaInstrument(InstrumentTrack* const instrumentTrack, const Descriptor* const descriptor, const bool isPatchbay);
     virtual ~CarlaInstrument();
 
-    // CarlaNative functions
+    // Carla NativeHostDescriptor functions
     uint32_t handleGetBufferSize() const;
     double handleGetSampleRate() const;
     bool handleIsOffline() const;

plugins/carlapatchbay/carlapatchbay.cpp

@@ -1,7 +1,7 @@
 /*
  * carlapatchbay.cpp - Carla for LMMS (Patchbay)
  *
- * Copyright (C) 2014 Filipe Coelho <[email protected]>
+ * Copyright (C) 2014-2018 Filipe Coelho <[email protected]>
  *
  * This file is part of LMMS - https://lmms.io
  *
@@ -36,7 +36,7 @@ Plugin::Descriptor PLUGIN_EXPORT carlapatchbay_plugin_descriptor =
     QT_TRANSLATE_NOOP( "pluginBrowser",
                        "Carla Patchbay Instrument" ),
     "falkTX <falktx/at/falktx.com>",
-    0x0195,
+    CARLA_VERSION_HEX,
     Plugin::Instrument,
     new PluginPixmapLoader( "logo" ),
     NULL,

plugins/carlarack/carlarack.cpp

@@ -1,7 +1,7 @@
 /*
  * carlarack.cpp - Carla for LMMS (Rack)
  *
- * Copyright (C) 2014 Filipe Coelho <[email protected]>
+ * Copyright (C) 2014-2018 Filipe Coelho <[email protected]>
  *
  * This file is part of LMMS - https://lmms.io
  *
@@ -36,7 +36,7 @@ Plugin::Descriptor PLUGIN_EXPORT carlarack_plugin_descriptor =
     QT_TRANSLATE_NOOP( "pluginBrowser",
                        "Carla Rack Instrument" ),
     "falkTX <falktx/at/falktx.com>",
-    0x0195,
+    CARLA_VERSION_HEX,
     Plugin::Instrument,
     new PluginPixmapLoader( "logo" ),
     NULL,