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Implement the CLAP render extension

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This commit is contained in:
Robbert van der Helm
2022-10-10 16:08:26 +02:00
parent 0f7a5f8109
commit 0143d43c7e
8 changed files with 109 additions and 7 deletions
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src/wine-host/bridges/clap.cpp
+56 -4
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@@ -37,6 +37,8 @@ ClapPluginExtensions::ClapPluginExtensions(const clap_plugin& plugin) noexcept
plugin.get_extension(&plugin, CLAP_EXT_NOTE_PORTS))),
params(static_cast<const clap_plugin_params_t*>(
plugin.get_extension(&plugin, CLAP_EXT_PARAMS))),
render(static_cast<const clap_plugin_render_t*>(
plugin.get_extension(&plugin, CLAP_EXT_RENDER))),
state(static_cast<const clap_plugin_state_t*>(
plugin.get_extension(&plugin, CLAP_EXT_STATE))),
tail(static_cast<const clap_plugin_tail_t*>(
@@ -54,6 +56,7 @@ clap::plugin::SupportedPluginExtensions ClapPluginExtensions::supported()
.supports_latency = latency != nullptr,
.supports_note_ports = note_ports != nullptr,
.supports_params = params != nullptr,
.supports_render = render != nullptr,
.supports_state = state != nullptr,
.supports_tail = tail != nullptr,
.supports_voice_info = voice_info != nullptr};
@@ -710,6 +713,40 @@ void ClapBridge::run() {
.result = std::nullopt};
}
},
[&](clap::ext::render::plugin::HasHardRealtimeRequirement& request)
-> clap::ext::render::plugin::HasHardRealtimeRequirement::
Response {
const auto& [instance, _] =
get_instance(request.instance_id);
return main_context_
.run_in_context([&, plugin = instance.plugin.get(),
render =
instance.extensions.render]() {
return render->has_hard_realtime_requirement(
plugin);
})
.get();
},
[&](clap::ext::render::plugin::Set& request)
-> clap::ext::render::plugin::Set::Response {
const auto& [instance, _] = get_instance(request.instance_id);
return main_context_
.run_in_context([&, plugin = instance.plugin.get(),
render = instance.extensions.render,
&render_mode = instance.render_mode]() {
if (render->set(plugin, request.mode)) {
// This is used later to do offline processing on
// the GUI thread
render_mode = request.mode;
return true;
} else {
return false;
}
})
.get();
},
[&](clap::ext::state::plugin::Save& request)
-> clap::ext::state::plugin::Save::Response {
const auto& [instance, _] = get_instance(request.instance_id);
@@ -1005,13 +1042,28 @@ void ClapBridge::register_plugin_instance(
// The actual audio is stored in the shared memory
// buffers, so the reconstruction function will need to
// know where it should point the `AudioBusBuffers` to
// TODO: Once we add the render extension, process on the
// main thread when doing offline rendering
// HACK: The VST3 version of IK-Multimedia's T-RackS 5 will
// hang if audio processing is done from the audio
// thread while the plugin is in offline processing
// mode. So as a precaution, we'll also do offline
// processing for CLAP plugins on the GUI thread.
clap_process_status result;
auto& reconstructed = request.process.reconstruct(
instance.process_buffers_input_pointers,
instance.process_buffers_output_pointers);
clap_process_status result = instance.plugin->process(
instance.plugin.get(), &reconstructed);
if (instance.render_mode == CLAP_RENDER_OFFLINE) {
result =
main_context_
.run_in_context([&instance = instance,
&reconstructed]() {
return instance.plugin->process(
instance.plugin.get(), &reconstructed);
})
.get();
} else {
result = instance.plugin->process(instance.plugin.get(),
&reconstructed);
}
return clap::plugin::ProcessResponse{
.result = result,