Add tempo support

pedalboard/ExternalPlugin.h

@@ -789,6 +789,7 @@ template <typename ExternalPluginType> class ExternalPlugin : public Plugin {
         channelPointers[i] = outputBlock.getChannelPointer(i);
       }
 
+
       // Depending on the bus layout, we may have to pass extra buffers to the
       // plugin that we don't use. Use vector here to ensure the memory is
       // freed via RAII.
@@ -994,11 +995,12 @@ inline void init_external_plugins(py::module &m) {
       "(i.e.: if you're running Linux but trying to open a VST that does not "
       "support Linux, this will fail).")
       .def(py::init([](std::string &pathToPluginFile,
-                       std::optional<std::string> pluginName) {
+                       std::optional<std::string> pluginName,
+                       std::optional<int> tempoBpm) {
              return std::make_unique<ExternalPlugin<juce::VST3PluginFormat>>(
-                 pathToPluginFile, pluginName);
+                 pathToPluginFile, pluginName, tempoBpm);
            }),
-           py::arg("path_to_plugin_file"), py::arg("plugin_name") = py::none())
+           py::arg("path_to_plugin_file"), py::arg("plugin_name") = py::none(), py::arg("tempo_bpm") = 120)
       .def("__repr__",
            [](ExternalPlugin<juce::VST3PluginFormat> &plugin) {
              std::ostringstream ss;
@@ -1043,6 +1045,10 @@ inline void init_external_plugins(py::module &m) {
            "Show the UI of this plugin as a native window. This method will "
            "block until the window is closed or a KeyboardInterrupt is "
            "received.");
+      .def_property(
+          "tempo", &ExternalPlugin<juce::VST3PluginFormat>::getBpm,
+          &ExternalPlugin<juce::VST3PluginFormat>::setBpm, 
+          "The value of the tempo/bpm")
 #endif
 
 #if JUCE_PLUGINHOST_AU && JUCE_MAC
@@ -1110,4 +1116,4 @@ inline void init_external_plugins(py::module &m) {
 #endif
 }
 
-} // namespace Pedalboard
+} // namespace Pedalboard

pedalboard/pedalboard.py

@@ -565,6 +565,9 @@ def __set_initial_parameter_values__(
                 )
             setattr(self, key, value)
 
+    def __set_extra_functions__(self, tempo_bpm: int = 120):
+        tempo_bpm = self.tempo_bpm
+
     @property
     def parameters(self) -> Dict[str, AudioProcessorParameter]:
         # Return a read-only version of this dictionary,
@@ -668,6 +671,7 @@ def __init__(
             path_to_plugin_file: str,
             parameter_values: Dict[str, Union[str, int, float, bool]] = {},
             plugin_name: Optional[str] = None,
+            tempo_bpm: int = 120,
         ):
             if not isinstance(parameter_values, dict):
                 raise TypeError(
@@ -728,6 +732,7 @@ def load_plugin(
     path_to_plugin_file: str,
     parameter_values: Dict[str, Union[str, int, float, bool]] = {},
     plugin_name: Union[str, None] = None,
+    tempo_bpm: int = 120,
 ) -> ExternalPlugin:
     """
     Load an audio plugin.
@@ -774,6 +779,7 @@ def load_plugin(
                 path_to_plugin_file=path_to_plugin_file,
                 parameter_values=parameter_values,
                 plugin_name=plugin_name,
+                tempo_bpm=tempo_bpm
             )
         except ImportError as e:
             exceptions.append(e)