More wasm details, deal with requirements for -sMAIN_MODULE

Signed-off-by: falkTX <falktx@falktx.com>

Makefile

@@ -64,7 +64,6 @@ DGL_EXTRA_ARGS = \
 	NVG_DISABLE_SKIPPING_WHITESPACE=true \
 	NVG_FONT_TEXTURE_FLAGS=NVG_IMAGE_NEAREST \
 	USE_NANOVG_FBO=true \
-	WASM_EXCEPTIONS=true \
 	WINDOWS_ICON_ID=401
 
 # --------------------------------------------------------------

carla

@@ -1 +1 @@
-Subproject commit b8fa8f2faa42f69f6093a03fafb86b374ed46145
+Subproject commit 7a9b7ba35e261f519b4ab38b7f506e2745998e90

dpf

@@ -1 +1 @@
-Subproject commit b9e654c3d331933dbeae0413246be8dc2bd64a58
+Subproject commit 02216aba747685fe3d8c1e7b95d7fc008249fee2

include/common.hpp

@@ -30,16 +30,19 @@
 
 #include_next "common.hpp"
 
-// Workaround for wrong file permissions from zstd extraction
+// Workaround for wrong file permissions from zstd extraction and system usage
 #ifdef __EMSCRIPTEN__
 #define fopen fopen_wasm
+#define system system_wasm
 
 extern "C" {
 FILE* fopen_wasm(const char* filename, const char* mode);
+inline int system_wasm(const char*) { return 0; }
 }
 
 namespace std {
 	using ::fopen_wasm;
+	using ::system_wasm;
 }
 #endif
 

include/linux-compat/execinfo.h

@@ -17,16 +17,13 @@
 
 #pragma once
 
-#ifdef __HAIKU__
-// these are missing from HaikuOS
 #define pthread_setname_np(...)
 
-static int pthread_getcpuclockid(pthread_t, clockid_t* const clock_id)
+int pthread_getcpuclockid(pthread_t, clockid_t* const clock_id)
 {
     *clock_id = CLOCK_REALTIME;
     return 0;
 }
-#endif
 
 static int backtrace(void**, int)
 {

plugins/Makefile

@@ -515,7 +515,7 @@ PLUGIN_FILES += $(filter-out Bidoo/src/plugin.cpp Bidoo/src/ANTN.cpp,$(wildcard
 PLUGIN_FILES += $(wildcard Bidoo/src/dep/*.cpp)
 PLUGIN_FILES += $(wildcard Bidoo/src/dep/filters/*.cpp)
 PLUGIN_FILES += $(wildcard Bidoo/src/dep/freeverb/*.cpp)
-PLUGIN_FILES += $(wildcard Bidoo/src/dep/lodepng/*.cpp)
+PLUGIN_FILES += $(filter-out Bidoo/src/dep/lodepng/pngdetail.cpp,$(wildcard Bidoo/src/dep/lodepng/*.cpp))
 PLUGIN_FILES += $(filter-out Bidoo/src/dep/resampler/main.cpp,$(wildcard Bidoo/src/dep/resampler/*.cpp))
 PLUGIN_FILES += BidooDark/plugin.cpp
 
@@ -1024,6 +1024,10 @@ BASE_FLAGS += -I../src/Rack/dep/pffft
 
 ifeq ($(DEBUG),true)
 BASE_FLAGS += -UDEBUG
+ifeq ($(WASM),true)
+# SSE must always be enabled on wasm, even in debug builds
+BASE_FLAGS += -msse -msse2 -msse3 -msimd128
+endif
 endif
 
 ifeq ($(HEADLESS),true)
@@ -1098,6 +1102,23 @@ ifeq ($(MACOS),true)
 BASE_FLAGS += -Wno-unknown-warning-option
 endif
 
+# --------------------------------------------------------------
+# Carla and friends build flags
+
+CARLA_FLAGS = \
+	-DCARLA_BACKEND_NAMESPACE=Cardinal \
+	-DREAL_BUILD \
+	-DSTATIC_PLUGIN_TARGET \
+	-I../deps/aubio/src \
+	-I../carla/source/backend \
+	-I../carla/source/includes \
+	-I../carla/source/modules \
+	-I../carla/source/utils
+
+ifeq ($(WASM),true)
+CARLA_FLAGS += -DDISTRHO_RUNNER_INDIRECT_WASM_CALLS
+endif
+
 # --------------------------------------------------------------
 # Build targets
 
@@ -1314,14 +1335,7 @@ $(BUILD_DIR)/Cardinal/%.cpp.o: Cardinal/%.cpp
 		-Dstbtt_fontinfo=stbtt_fontinfo_cardinal \
 		-Dstbrp_node=stbrp_node_cardinal \
 		-Dstbrp_rect=stbrp_rect_cardinal \
-		-DCARLA_BACKEND_NAMESPACE=Cardinal \
-		-DREAL_BUILD \
-		-DSTATIC_PLUGIN_TARGET \
-		-I../deps/aubio/src \
-		-I../carla/source/backend \
-		-I../carla/source/includes \
-		-I../carla/source/modules \
-		-I../carla/source/utils
+		$(CARLA_FLAGS)
 
 $(BUILD_DIR)/21kHz/%.cpp.o: 21kHz/%.cpp
 	-@mkdir -p "$(shell dirname $(BUILD_DIR)/$<)"

src/CardinalCommon.cpp

@@ -284,7 +284,7 @@ void openBrowser(const std::string& url)
         window.open(UTF8ToString($0), '_blank');
     }, url.c_str());
 #else
-    patchUtils::openBrowser(url);
+    system::openBrowser(url);
 #endif
 }
 

src/CardinalPlugin.cpp

@@ -104,16 +104,18 @@ bool d_isDiffHigherThanLimit(const T& v1, const T& v2, const T& limit)
 // -----------------------------------------------------------------------------------------------------------
 
 #ifdef DISTRHO_OS_WASM
-EM_JS(char*, getPatchStorageSlug, (), {
-    var searchParams = new URLSearchParams(window.location.search);
-    var patch = searchParams.get('patchstorage');
-    if (!patch)
-      return null;
-    var length = lengthBytesUTF8(patch) + 1;
-    var str = _malloc(length);
-    stringToUTF8(patch, str, length);
-    return str;
-});
+static char* getPatchStorageSlug() {
+    return static_cast<char*>(EM_ASM_PTR({
+        var searchParams = new URLSearchParams(window.location.search);
+        var patch = searchParams.get('patchstorage');
+        if (!patch)
+        return null;
+        var length = lengthBytesUTF8(patch) + 1;
+        var str = _malloc(length);
+        stringToUTF8(patch, str, length);
+        return str;
+    }));
+};
 #endif
 
 // -----------------------------------------------------------------------------------------------------------

src/CardinalUI.cpp

@@ -388,20 +388,9 @@ public:
 
        #ifdef DISTRHO_OS_WASM
         if (rack::patchStorageSlug != nullptr)
-        {
-            std::string url("/patchstorage.php?slug=");
-            url += rack::patchStorageSlug;
-            std::free(rack::patchStorageSlug);
-            rack::patchStorageSlug = nullptr;
-
             psDialog = new WasmPatchStorageLoadingDialog();
-            emscripten_async_wget(url.c_str(), context->patch->templatePath.c_str(),
-                                  downloadPatchStorageSucceeded, downloadPatchStorageFailed);
-        }
         else
-        {
             new WasmWelcomeDialog();
-        }
        #endif
 
         context->window->step();
@@ -443,6 +432,19 @@ public:
         {
             counterForSelfFocus = -1;
             getWindow().focus();
+
+           #ifdef DISTRHO_OS_WASM
+            if (rack::patchStorageSlug != nullptr)
+            {
+                std::string url("/patchstorage.php?slug=");
+                url += rack::patchStorageSlug;
+                std::free(rack::patchStorageSlug);
+                rack::patchStorageSlug = nullptr;
+
+                emscripten_async_wget(url.c_str(), context->patch->templatePath.c_str(),
+                                    downloadPatchStorageSucceeded, downloadPatchStorageFailed);
+            }
+           #endif
         }
 
         if (filebrowserhandle != nullptr && fileBrowserIdle(filebrowserhandle))

src/Makefile

@@ -64,6 +64,10 @@ BASE_FLAGS += -IRack/dep/pffft
 
 ifeq ($(DEBUG),true)
 BASE_FLAGS += -UDEBUG
+ifeq ($(WASM),true)
+# SSE must always be enabled on wasm, even in debug builds
+BASE_FLAGS += -msse -msse2 -msse3 -msimd128
+endif
 endif
 
 ifeq ($(HAVE_LIBLO),true)
@@ -168,6 +172,10 @@ RACK_FILES += $(wildcard Rack/src/*/*.c)
 RACK_FILES += $(filter-out $(IGNORED_FILES),$(wildcard Rack/src/*.cpp))
 RACK_FILES += $(filter-out $(IGNORED_FILES), $(wildcard Rack/src/*/*.cpp))
 
+ifeq ($(WASM),true)
+RACK_FILES += emscripten/WasmUtils.cpp
+endif
+
 # --------------------------------------------------------------
 # lots of warnings from VCV side
 
@@ -194,6 +202,8 @@ all: $(TARGET)
 ifeq ($(MOD_BUILD),true)
 	$(MAKE) -C Cardinal lv2
 	$(MAKE) -C CardinalFX lv2
+else ifeq ($(WASM),true)
+	$(MAKE) -C CardinalSynth jack
 else
 	$(MAKE) -C Cardinal
 	$(MAKE) -C CardinalFX $(CARDINAL_FX_ARGS)
@@ -244,6 +254,8 @@ $(BUILD_DIR)/%.cpp.o: %.cpp
 	@echo "Compiling $<"
 	$(SILENT)$(CXX) $< $(BUILD_CXX_FLAGS) -c -o $@
 
+$(BUILD_DIR)/emscripten/WasmUtils.cpp.o: BUILD_CXX_FLAGS += -fno-exceptions
+
 # --------------------------------------------------------------
 
 -include $(RACK_OBJS:%.o=%.d)

src/Makefile.cardinal.mk

@@ -20,7 +20,6 @@ endif
 ifneq ($(STATIC_BUILD),true)
 
 CWD = ../../carla/source
-STATIC_PLUGIN_TARGET = true
 include $(CWD)/Makefile.deps.mk
 
 CARLA_BUILD_DIR = ../../carla/build
@@ -35,7 +34,9 @@ CARLA_EXTRA_LIBS += $(CARLA_BUILD_DIR)/modules/$(CARLA_BUILD_TYPE)/carla_engine_
 CARLA_EXTRA_LIBS += $(CARLA_BUILD_DIR)/modules/$(CARLA_BUILD_TYPE)/carla_plugin.a
 CARLA_EXTRA_LIBS += $(CARLA_BUILD_DIR)/modules/$(CARLA_BUILD_TYPE)/native-plugins.a
 CARLA_EXTRA_LIBS += $(CARLA_BUILD_DIR)/modules/$(CARLA_BUILD_TYPE)/audio_decoder.a
+ifneq ($(WASM),true)
 CARLA_EXTRA_LIBS += $(CARLA_BUILD_DIR)/modules/$(CARLA_BUILD_TYPE)/jackbridge.min.a
+endif
 CARLA_EXTRA_LIBS += $(CARLA_BUILD_DIR)/modules/$(CARLA_BUILD_TYPE)/lilv.a
 CARLA_EXTRA_LIBS += $(CARLA_BUILD_DIR)/modules/$(CARLA_BUILD_TYPE)/rtmempool.a
 CARLA_EXTRA_LIBS += $(CARLA_BUILD_DIR)/modules/$(CARLA_BUILD_TYPE)/sfzero.a
@@ -114,6 +115,11 @@ endif
 
 # --------------------------------------------------------------
 
+# FIXME
+ifeq ($(WASM),true)
+STATIC_CARLA_PLUGIN_LIBS = -lsndfile -lopus -lFLAC -lvorbisenc -lvorbis -logg -lm
+endif
+
 EXTRA_DEPENDENCIES = $(RACK_EXTRA_LIBS) $(CARLA_EXTRA_LIBS)
 EXTRA_LIBS = $(RACK_EXTRA_LIBS) $(CARLA_EXTRA_LIBS) $(STATIC_CARLA_PLUGIN_LIBS)
 
@@ -206,6 +212,7 @@ BASE_FLAGS += -Wno-unused-variable
 
 ifeq ($(WASM),true)
 LINK_FLAGS += --preload-file=./jsfx
+LINK_FLAGS += --preload-file=./lv2
 LINK_FLAGS += --preload-file=./resources
 LINK_FLAGS += -sALLOW_MEMORY_GROWTH
 LINK_FLAGS += -sINITIAL_MEMORY=64Mb

src/emscripten/WasmUtils.cpp

@@ -0,0 +1,36 @@
+/*
+ * DISTRHO Cardinal Plugin
+ * Copyright (C) 2021-2022 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 3 of
+ * the License, or any later version.
+ *
+ * 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.
+ *
+ * For a full copy of the GNU General Public License see the LICENSE file.
+ */
+
+#include <emscripten/html5.h>
+
+// -----------------------------------------------------------------------------------------------------------
+
+namespace CardinalDISTRHO {
+
+long d_emscripten_set_interval(void (*cb)(void* userData), double intervalMsecs, void* userData)
+{
+    return emscripten_set_interval(cb, intervalMsecs, userData);
+}
+
+void d_emscripten_clear_interval(long setIntervalId)
+{
+    emscripten_clear_interval(setIntervalId);
+}
+
+}
+
+// -----------------------------------------------------------------------------------------------------------