Add SDL/wasm test code

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

source/tests/Makefile

@@ -21,14 +21,14 @@ endif
 
 # ---------------------------------------------------------------------------------------------------------------------
 
-BUILD_C_FLAGS   += -I..
-BUILD_CXX_FLAGS += -I.. -I$(CWD)/modules
+BASE_FLAGS      += -DBUILDING_CARLA -DREAL_BUILD
+BASE_FLAGS      += -I. -I.. -I../backend -I../includes -I../modules -I../utils
+BUILD_CXX_FLAGS += -I$(CWD)/modules
 
 # ---------------------------------------------------------------------------------------------------------------------
 
 PEDANTIC_FLAGS  = -pedantic -pedantic-errors
-PEDANTIC_FLAGS += -Wall -Wextra -Werror -pipe -DBUILDING_CARLA -DREAL_BUILD
-PEDANTIC_FLAGS += -I. -I../backend -I../includes -I../modules -I../utils
+PEDANTIC_FLAGS += -Wall -Wextra -Werror -pipe
 
 PEDANTIC_FLAGS += -Wabi=98 -Wcast-qual -Wclobbered -Wconversion -Wdisabled-optimization
 PEDANTIC_FLAGS += -Wcast-align -Wcast-qual -Wclobbered -Wconversion -Wdisabled-optimization
@@ -75,7 +75,12 @@ TARGETS = \
 	ansi-pedantic-test_cxx98_run \
 	ansi-pedantic-test_cxx03_run \
 	ansi-pedantic-test_cxx11_run \
-	carla-host-plugin_run
+	carla-host-plugin_run \
+	carla-engine-sdl
+
+ifeq ($(WASM),true)
+TARGETS = carla-engine-sdl$(APP_EXT)
+endif
 
 # ---------------------------------------------------------------------------------------------------------------------
 
@@ -125,6 +130,27 @@ $(BINDIR)/carla-host-plugin: carla-host-plugin.c
 
 # ---------------------------------------------------------------------------------------------------------------------
 
+# 		$(CWD)/../build/plugin/Release/carla-host-plugin.cpp.o \
+
+.PHONY: carla-engine-sdl$(APP_EXT)
+carla-engine-sdl$(APP_EXT): $(OBJDIR)/carla-engine-sdl.c.o
+	$(CC) $< \
+		$(CWD)/../build/backend/Release/CarlaStandalone.cpp.o \
+		$(MODULEDIR)/carla_engine.a \
+		$(MODULEDIR)/carla_plugin.a \
+		$(MODULEDIR)/lilv.a \
+		$(MODULEDIR)/native-plugins.a \
+		$(MODULEDIR)/sfzero.a \
+		$(MODULEDIR)/audio_decoder.a \
+		$(MODULEDIR)/rtmempool.a \
+		$(MODULEDIR)/water.a \
+		$(MODULEDIR)/ysfx.a \
+		$(MODULEDIR)/zita-resampler.a \
+		-lSDL --preload-file foolme.mp3 -sALLOW_MEMORY_GROWTH \
+		-o $@
+
+# ---------------------------------------------------------------------------------------------------------------------
+
 clean:
 	rm -f $(BINDIR)/ansi-pedantic-test_* $(BINDIR)/carla-host-plugin
 

source/tests/carla-engine-sdl.c

@@ -0,0 +1,98 @@
+/*
+ * Carla Host Plugin SDL test
+ * Copyright (C) 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 2 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 doc/GPL.txt file.
+ */
+
+#include "CarlaHost.h"
+#include "CarlaUtils.h"
+
+#include <emscripten.h>
+
+#include <stdio.h>
+#include <string.h>
+
+static void engine_idle_loop(void* const arg)
+{
+    const CarlaHostHandle handle = arg;
+    static int counter = 0;
+    if (++counter == 100)
+    {
+    carla_engine_idle(handle);
+        counter = 0;
+        const uint64_t frame = carla_get_current_transport_frame(handle);
+        printf("engine_idle_loop | play frame %llu | audio peaks %f %f\n",
+               frame,
+               carla_get_output_peak_value(handle, 0, true),
+               carla_get_output_peak_value(handle, 0, false));
+    }
+}
+
+int main(void)
+{
+    printf("carla_get_complete_license_text: %s\n", carla_get_complete_license_text());
+//     printf("carla_get_juce_version: %s\n", carla_get_juce_version());
+//     printf("carla_get_supported_file_extensions: %s\n", carla_get_supported_file_extensions());
+//     printf("carla_get_supported_features: %s\n", carla_get_supported_features());
+    printf("carla_get_library_filename: %s\n", carla_get_library_filename());
+    printf("carla_get_library_folder: %s\n", carla_get_library_folder());
+
+    /*
+    const uint32_t plugins_count = carla_get_cached_plugin_count(PLUGIN_INTERNAL, NULL);
+    printf("carla_get_cached_plugin_count: %u\n", plugins_count);
+
+    for (uint32_t i=0; i<plugins_count; ++i)
+    {
+        const CarlaCachedPluginInfo* const plugin_info = carla_get_cached_plugin_info(PLUGIN_INTERNAL, i);
+        printf("Loading carla_get_cached_plugin_info #%u '%s'\n", i+1, plugin_info->label);
+    }
+    */
+
+    const CarlaHostHandle handle = carla_standalone_host_init();
+    printf("carla_standalone_host_init: %p\n", handle);
+
+    carla_set_engine_option(handle, ENGINE_OPTION_PROCESS_MODE, ENGINE_PROCESS_MODE_CONTINUOUS_RACK, NULL);
+
+    const bool engine_init = carla_engine_init(handle, "SDL", "Engine Test");
+    printf("carla_engine_init: %d\n", engine_init);
+
+    if (!engine_init)
+        return 1;
+
+    const bool plugin_added = carla_add_plugin(handle, BINARY_NATIVE, PLUGIN_INTERNAL, NULL, "Music", "audiofile", 0, NULL, PLUGIN_OPTIONS_NULL);
+    printf("carla_add_plugin: %d\n", plugin_added);
+
+    if (!plugin_added)
+        goto close;
+
+    const uint32_t current_plugins_count = carla_get_current_plugin_count(handle);
+    printf("carla_get_current_plugin_count: %u\n", current_plugins_count);
+
+    if (current_plugins_count != 1)
+        goto close;
+
+    carla_patchbay_connect(handle, false, 1, 3, 3, 1);
+    carla_patchbay_connect(handle, false, 1, 4, 3, 2);
+
+    carla_set_custom_data(handle, 0, CUSTOM_DATA_TYPE_PATH, "file", "/foolme.mp3");
+    carla_transport_play(handle);
+
+    emscripten_set_main_loop_arg(engine_idle_loop, handle, 0, false);
+
+    return 0;
+
+close:
+    printf("carla_engine_close: %d\n", carla_engine_close(handle));
+    return 1;
+}