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Add tempo support #172

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Add tempo support #172

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4bfe24e
init
rhelsing Nov 30, 2022
403c891
Merge branch 'master' into external-tempo-support
rhelsing Dec 12, 2022
524dc03
some progress
rhelsing Dec 12, 2022
587040b
dont support au yet
rhelsing Dec 12, 2022
71c6518
Update pedalboard/ExternalPlugin.h
rhelsing Dec 26, 2022
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14 changes: 10 additions & 4 deletions pedalboard/ExternalPlugin.h
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Original file line number Diff line number Diff line change
Expand Up @@ -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.
Expand Down Expand Up @@ -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) {
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I think we'll need to decide if tempoBpm can be optional or not; in your Python code below, you pass a default value of 120 BPM. Making tempoBpm an std::optional here means that it could be None as well; it sounds like it should be mandatory argument with a default value, rather than an optional type.

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;
Expand Down Expand Up @@ -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
Expand Down Expand Up @@ -1110,4 +1116,4 @@ inline void init_external_plugins(py::module &m) {
#endif
}

} // namespace Pedalboard
} // namespace Pedalboard
6 changes: 6 additions & 0 deletions pedalboard/pedalboard.py
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Original file line number Diff line number Diff line change
Expand Up @@ -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

Comment on lines +568 to +570
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This won't do anything: tempo_bpm is just a local variable. I think you probably want to pass tempo_bpm through as a parameter into _VST3Plugin.__init__(self, path_to_plugin_file, plugin_name) on line 682 instead.

@property
def parameters(self) -> Dict[str, AudioProcessorParameter]:
# Return a read-only version of this dictionary,
Expand Down Expand Up @@ -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(
Expand Down Expand Up @@ -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.
Expand Down Expand Up @@ -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)
Expand Down