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Implement CLAP plugin initialization

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This commit is contained in:
Robbert van der Helm
2022-09-10 16:20:19 +02:00
parent bc2bad3e94
commit 6865cbd937
10 changed files with 133 additions and 19 deletions
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src/wine-host/bridges/clap.cpp
+34 -4
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@@ -147,7 +147,7 @@ void ClapBridge::run() {
.run_in_context([&]() {
plugin_factory_ =
static_cast<const clap_plugin_factory_t*>(
(entry_->get_factory)(CLAP_PLUGIN_FACTORY_ID));
entry_->get_factory(CLAP_PLUGIN_FACTORY_ID));
if (!plugin_factory_) {
return clap::plugin_factory::ListResponse{
.descriptors = std::nullopt};
@@ -155,11 +155,10 @@ void ClapBridge::run() {
std::vector<clap::plugin::Descriptor> descriptors;
const uint32_t num_plugins =
(plugin_factory_->get_plugin_count)(
plugin_factory_);
plugin_factory_->get_plugin_count(plugin_factory_);
for (uint32_t i = 0; i < num_plugins; i++) {
const clap_plugin_descriptor_t* descriptor =
(plugin_factory_->get_plugin_descriptor)(
plugin_factory_->get_plugin_descriptor(
plugin_factory_, i);
if (!descriptor) {
std::cerr << "Plugin returned a null pointer "
@@ -209,6 +208,37 @@ void ClapBridge::run() {
})
.get();
},
[&](clap::plugin::Init& request) -> clap::plugin::Init::Response {
return main_context_
.run_in_context([&]() {
const auto& [instance, _] =
get_instance(request.instance_id);
// The plugin is allowed to query the same set of
// extensions from our host proxy that the native host
// supports
instance.host_proxy->supported_extensions_ =
request.supported_host_extensions;
const bool result =
instance.plugin->init(instance.plugin.get());
if (result) {
// This mimics the same behavior we had to implement
// for VST2 and VST3. The Win32 message loop is
// completely blocked while a plugin instance has
// been created but not yet initialized.
instance.is_initialized = true;
}
return clap::plugin::InitResponse{
.result = result,
// Similarly, we'll make the plugin's supported
// extensions available to the host
.supported_plugin_extensions = *instance.plugin};
})
.get();
},
[&](clap::plugin::Destroy& request)
-> clap::plugin::Destroy::Response {
return main_context_