Add cmake integration for LV2 and VST2 old interface

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

extras/Build/CMake/JUCEModuleSupport.cmake

@@ -234,7 +234,7 @@ endfunction()
 # ==================================================================================================
 
 function(_juce_get_all_plugin_kinds out)
-    set(${out} AU AUv3 AAX Standalone Unity VST VST3 PARENT_SCOPE)
+    set(${out} AU AUv3 AAX Standalone Unity VST VST3 LV2 PARENT_SCOPE)
 endfunction()
 
 function(_juce_get_platform_plugin_kinds out)
@@ -249,7 +249,7 @@ function(_juce_get_platform_plugin_kinds out)
     endif()
 
     if(NOT CMAKE_SYSTEM_NAME STREQUAL "iOS" AND NOT CMAKE_SYSTEM_NAME STREQUAL "Android")
-        list(APPEND result AAX Unity VST VST3)
+        list(APPEND result AAX Unity VST VST3 LV2)
     endif()
 
     set(${out} ${result} PARENT_SCOPE)

extras/Build/CMake/JUCEUtils.cmake

@@ -75,6 +75,10 @@ define_property(TARGET PROPERTY JUCE_UNITY_COPY_DIR INHERITED
     BRIEF_DOCS "Install location for Unity plugins"
     FULL_DOCS "This is where the plugin will be copied if plugin copying is enabled")
 
+define_property(TARGET PROPERTY JUCE_LV2_COPY_DIR INHERITED
+    BRIEF_DOCS "Install location for LV2 plugins"
+    FULL_DOCS "This is where the plugin will be copied if plugin copying is enabled")
+
 define_property(TARGET PROPERTY JUCE_COPY_PLUGIN_AFTER_BUILD INHERITED
     BRIEF_DOCS "Whether or not plugins should be copied after building"
     FULL_DOCS "Whether or not plugins should be copied after building")
@@ -115,6 +119,7 @@ function(_juce_set_default_properties)
     elseif((CMAKE_SYSTEM_NAME STREQUAL "Linux") OR (CMAKE_SYSTEM_NAME MATCHES ".*BSD"))
         set_property(GLOBAL PROPERTY JUCE_VST_COPY_DIR  "$ENV{HOME}/.vst")
         set_property(GLOBAL PROPERTY JUCE_VST3_COPY_DIR "$ENV{HOME}/.vst3")
+        set_property(GLOBAL PROPERTY JUCE_LV2_COPY_DIR "$ENV{HOME}/.lv2")
     endif()
 endfunction()
 
@@ -916,6 +921,7 @@ function(_juce_set_plugin_target_properties shared_code_target kind)
     elseif(kind STREQUAL "VST")
         set_target_properties(${target_name} PROPERTIES
             BUNDLE_EXTENSION vst
+            PREFIX ""
             BUNDLE TRUE
             XCODE_ATTRIBUTE_WRAPPER_EXTENSION vst
             XCODE_ATTRIBUTE_LIBRARY_STYLE Bundle
@@ -928,6 +934,30 @@ function(_juce_set_plugin_target_properties shared_code_target kind)
         endif()
 
         _juce_set_copy_properties(${shared_code_target} ${target_name} "${output_path}" JUCE_VST_COPY_DIR)
+    elseif(kind STREQUAL "LV2")
+        set(output_path "${products_folder}/${product_name}.lv2")
+
+        set_target_properties(${target_name} PROPERTIES
+            BUNDLE_EXTENSION lv2
+            PREFIX ""
+            BUNDLE TRUE
+            LIBRARY_OUTPUT_DIRECTORY "${output_path}"
+            XCODE_ATTRIBUTE_WRAPPER_EXTENSION lv2
+            XCODE_ATTRIBUTE_LIBRARY_STYLE Bundle
+            XCODE_ATTRIBUTE_GENERATE_PKGINFO_FILE NO)
+
+        if(NOT SKIP_LV2_TTL_GENERATOR)
+            # generate .ttl files
+            add_executable(${target_name}_lv2_ttl_generator ${JUCE_CMAKE_UTILS_DIR}/lv2_ttl_generator.c)
+            target_link_libraries(${target_name}_lv2_ttl_generator dl)
+            add_custom_command(TARGET ${target_name} POST_BUILD
+                COMMAND ${CROSSCOMPILING_EMULATOR} "${CMAKE_CURRENT_BINARY_DIR}/${target_name}_lv2_ttl_generator" "./${product_name}${CMAKE_SHARED_LIBRARY_SUFFIX}"
+                DEPENDS ${target_name} ${target_name}_lv2_ttl_generator
+                WORKING_DIRECTORY "${output_path}"
+                VERBATIM)
+        endif()
+
+        _juce_set_copy_properties(${shared_code_target} ${target_name} "${output_path}" JUCE_LV2_COPY_DIR)
     elseif(kind STREQUAL "AU")
         set_target_properties(${target_name} PROPERTIES
             BUNDLE_EXTENSION component
@@ -1025,6 +1055,8 @@ function(_juce_get_plugin_kind_name kind out_var)
         set(${out_var} "VST" PARENT_SCOPE)
     elseif(kind STREQUAL "VST3")
         set(${out_var} "VST3" PARENT_SCOPE)
+    elseif(kind STREQUAL "LV2")
+        set(${out_var} "LV2" PARENT_SCOPE)
     endif()
 endfunction()
 
@@ -1181,6 +1213,7 @@ function(_juce_configure_plugin_targets target)
         JucePlugin_VSTUniqueID=JucePlugin_PluginCode
         JucePlugin_VSTCategory=$<TARGET_PROPERTY:${target},JUCE_VST2_CATEGORY>
         JucePlugin_Vst3Category="${vst3_category_string}"
+        JucePlugin_LV2URI="$<TARGET_PROPERTY:${target},JUCE_LV2_URI>"
         JucePlugin_AUMainType=$<TARGET_PROPERTY:${target},JUCE_AU_MAIN_TYPE_CODE>
         JucePlugin_AUSubType=JucePlugin_PluginCode
         JucePlugin_AUExportPrefix=$<TARGET_PROPERTY:${target},JUCE_AU_EXPORT_PREFIX>
@@ -1529,6 +1562,7 @@ function(_juce_initialise_target target)
         VST_NUM_MIDI_INS
         VST_NUM_MIDI_OUTS
         VST2_CATEGORY
+        LV2_URI
         AU_MAIN_TYPE
         AU_EXPORT_PREFIX
         AU_SANDBOX_SAFE
@@ -1538,6 +1572,7 @@ function(_juce_initialise_target target)
 
         VST_COPY_DIR
         VST3_COPY_DIR
+        LV2_COPY_DIR
         AAX_COPY_DIR
         AU_COPY_DIR
         UNITY_COPY_DIR
@@ -1586,6 +1621,7 @@ function(_juce_initialise_target target)
         COMPANY_COPYRIGHT
         VST_COPY_DIR
         VST3_COPY_DIR
+        LV2_COPY_DIR
         AU_COPY_DIR
         AAX_COPY_DIR
         UNITY_COPY_DIR
@@ -1608,7 +1644,6 @@ function(_juce_initialise_target target)
 
     target_include_directories(${target} PRIVATE
         $<TARGET_PROPERTY:${target},JUCE_GENERATED_SOURCES_DIRECTORY>)
-    target_link_libraries(${target} PUBLIC $<$<TARGET_EXISTS:juce_vst2_sdk>:juce_vst2_sdk>)
 
     get_target_property(is_pluginhost_au ${target} JUCE_PLUGINHOST_AU)
 
@@ -1761,15 +1796,11 @@ function(juce_add_pip header)
             list(APPEND extra_formats AAX)
         endif()
 
-        if(TARGET juce_vst2_sdk)
-            list(APPEND extra_formats VST)
-        endif()
-
         # Standalone plugins might want to access the mic
         list(APPEND extra_target_args MICROPHONE_PERMISSION_ENABLED TRUE)
 
         juce_add_plugin(${JUCE_PIP_NAME}
-            FORMATS AU AUv3 VST3 Unity Standalone ${extra_formats}
+            FORMATS AU AUv3 VST VST3 Unity Standalone ${extra_formats}
             ${extra_target_args})
     elseif(pip_kind STREQUAL "Component")
         set(source_main "${JUCE_CMAKE_UTILS_DIR}/PIPComponent.cpp.in")
@@ -1887,25 +1918,6 @@ function(juce_set_aax_sdk_path path)
     set_target_properties(juce_aax_sdk PROPERTIES INTERFACE_JUCE_AAX_DEFAULT_ICON "${path}/Utilities/PlugIn.ico")
 endfunction()
 
-function(juce_set_vst2_sdk_path path)
-    if(TARGET juce_vst2_sdk)
-        message(FATAL_ERROR "juce_set_vst2_sdk_path should only be called once")
-    endif()
-
-    _juce_make_absolute(path)
-
-    if(NOT EXISTS "${path}")
-        message(FATAL_ERROR "Could not find VST2 SDK at the specified path: ${path}")
-    endif()
-
-    add_library(juce_vst2_sdk INTERFACE IMPORTED GLOBAL)
-
-    # This is a bit of a hack, but we really need the VST2 paths to always follow the VST3 paths.
-    target_include_directories(juce_vst2_sdk INTERFACE
-        $<TARGET_PROPERTY:juce::juce_vst3_headers,INTERFACE_INCLUDE_DIRECTORIES>
-        "${path}")
-endfunction()
-
 function(juce_set_vst3_sdk_path path)
     if(TARGET juce_vst3_sdk)
         message(FATAL_ERROR "juce_set_vst3_sdk_path should only be called once")

extras/Build/CMake/lv2_ttl_generator.c

@@ -0,0 +1,145 @@
+/*
+ * DISTRHO Plugin Framework (DPF)
+ * Copyright (C) 2012-2016 Filipe Coelho <falktx@falktx.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any purpose with
+ * or without fee is hereby granted, provided that the above copyright notice and this
+ * permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+ * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef _WIN32
+ #include <windows.h>
+ #define TTL_GENERATOR_WINDOWS
+#else
+ #include <dlfcn.h>
+#endif
+
+#ifndef nullptr
+ #define nullptr (0)
+#endif
+
+typedef void (*TTL_Generator_Function)(const char* basename);
+
+static int isPathSeparator(char c);
+static char* makeNormalPath(const char* path);
+
+// TODO support Unicode paths on the Windows platform
+
+int main(int argc, char* argv[])
+{
+    if (argc != 2)
+    {
+        printf("usage: %s /path/to/plugin-DLL\n", argv[0]);
+        return 1;
+    }
+
+    const char* path = argv[1];
+
+#ifdef TTL_GENERATOR_WINDOWS
+    const HMODULE handle = LoadLibraryA(path);
+#else
+    void* const handle = dlopen(path, RTLD_LAZY);
+#endif
+
+    if (! handle)
+    {
+#ifdef TTL_GENERATOR_WINDOWS
+        printf("Failed to open plugin DLL\n");
+#else
+        printf("Failed to open plugin DLL, error was:\n%s\n", dlerror());
+#endif
+        return 2;
+    }
+
+#ifdef TTL_GENERATOR_WINDOWS
+# if defined(__GNUC__) && (__GNUC__ >= 9)
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wcast-function-type"
+# endif
+    const TTL_Generator_Function ttlFn = (TTL_Generator_Function)GetProcAddress(handle, "lv2_generate_ttl");
+# if defined(__GNUC__) && (__GNUC__ >= 9)
+#  pragma GCC diagnostic pop
+# endif
+#else
+    const TTL_Generator_Function ttlFn = (TTL_Generator_Function)dlsym(handle, "lv2_generate_ttl");
+#endif
+
+    if (ttlFn != NULL)
+    {
+        // convert the paths to a normalized form, such that path separators are
+        // replaced with '/', and duplicate separators are removed
+        char* normalPath = makeNormalPath(path);
+
+        // get rid of any "./" prefixes
+        path = normalPath;
+        while (path[0] == '.' && path[1] == '/')
+            path += 2;
+
+        // extract the file name part
+        char* basename = strrchr(path, '/');
+        if (basename != NULL)
+            basename += 1;
+        else
+            basename = (char*)path;
+
+        // remove the file extension
+        char* dotPos = strrchr(basename, '.');
+        if (dotPos)
+            *dotPos = '\0';
+
+        printf("Generate ttl data for '%s', basename: '%s'\n", path, basename);
+
+        ttlFn(basename);
+
+        free(normalPath);
+    }
+    else
+        printf("Failed to find 'lv2_generate_ttl' function\n");
+
+#ifdef TTL_GENERATOR_WINDOWS
+    FreeLibrary(handle);
+#else
+    dlclose(handle);
+#endif
+
+    return 0;
+}
+
+static int isPathSeparator(char c)
+{
+#ifdef TTL_GENERATOR_WINDOWS
+    return c == '/' || c == '\\';
+#else
+    return c == '/';
+#endif
+}
+
+static char* makeNormalPath(const char* path)
+{
+    size_t i, j;
+    size_t len = strlen(path);
+    char* result = (char*)malloc(len + 1);
+    int isSep, wasSep = 0;
+    for (i = 0, j = 0; i < len; ++i)
+    {
+        isSep = isPathSeparator(path[i]);
+        if (!isSep)
+            result[j++] = path[i];
+        else if (!wasSep)
+            result[j++] = '/';
+        wasSep = isSep;
+    }
+    result[j] = '\0';
+    return result;
+}

modules/juce_audio_plugin_client/juce_audio_plugin_client_LV2.cpp

@@ -0,0 +1,27 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2017 - ROLI Ltd.
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
+   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
+   27th April 2017).
+
+   End User License Agreement: www.juce.com/juce-5-licence
+   Privacy Policy: www.juce.com/juce-5-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+#include "LV2/juce_LV2_Wrapper.cpp"