diff --git a/src/common/logging/clap.cpp b/src/common/logging/clap.cpp
index 0441becc..419b02f0 100644
--- a/src/common/logging/clap.cpp
+++ b/src/common/logging/clap.cpp
@@ -217,6 +217,13 @@ bool ClapLogger::log_request(
});
}
+bool ClapLogger::log_request(bool is_host_plugin,
+ const clap::ext::latency::plugin::Get& request) {
+ return log_request_base(is_host_plugin, [&](auto& message) {
+ message << request.instance_id << ": clap_plugin_latency::get()";
+ });
+}
+
bool ClapLogger::log_request(bool is_host_plugin,
const clap::plugin::StartProcessing& request) {
return log_request_base(is_host_plugin, [&](auto& message) {
@@ -343,6 +350,14 @@ bool ClapLogger::log_request(
});
}
+bool ClapLogger::log_request(bool is_host_plugin,
+ const clap::ext::latency::host::Changed& request) {
+ return log_request_base(is_host_plugin, [&](auto& message) {
+ message << request.owner_instance_id
+ << ": clap_host_latency::changed()";
+ });
+}
+
bool ClapLogger::log_request(bool is_host_plugin,
const clap::ext::tail::host::Changed& request) {
return log_request_base(is_host_plugin, [&](auto& message) {
diff --git a/src/common/logging/clap.h b/src/common/logging/clap.h
index ab195051..c2d357b5 100644
--- a/src/common/logging/clap.h
+++ b/src/common/logging/clap.h
@@ -96,6 +96,8 @@ class ClapLogger {
const clap::ext::params::plugin::ValueToText&);
bool log_request(bool is_host_plugin,
const clap::ext::params::plugin::TextToValue&);
+ bool log_request(bool is_host_plugin,
+ const clap::ext::latency::plugin::Get&);
// Audio thread control messages
bool log_request(bool is_host_plugin, const clap::plugin::StartProcessing&);
@@ -124,6 +126,8 @@ class ClapLogger {
const clap::ext::params::host::Clear&);
bool log_request(bool is_host_plugin,
const clap::ext::params::host::RequestFlush&);
+ bool log_request(bool is_host_plugin,
+ const clap::ext::latency::host::Changed&);
// Audio thread callbacks
bool log_request(bool is_host_plugin,
diff --git a/src/common/serialization/clap.h b/src/common/serialization/clap.h
index 035554db..8a529cdc 100644
--- a/src/common/serialization/clap.h
+++ b/src/common/serialization/clap.h
@@ -23,6 +23,7 @@
#include "../bitsery/ext/message-reference.h"
#include "../utils.h"
#include "clap/ext/audio-ports.h"
+#include "clap/ext/latency.h"
#include "clap/ext/note-ports.h"
#include "clap/ext/params.h"
#include "clap/ext/tail.h"
@@ -53,6 +54,7 @@ using ClapMainThreadControlRequest =
clap::plugin::Deactivate,
clap::ext::audio_ports::plugin::Count,
clap::ext::audio_ports::plugin::Get,
+ clap::ext::latency::plugin::Get,
clap::ext::note_ports::plugin::Count,
clap::ext::note_ports::plugin::Get,
clap::ext::params::plugin::Count,
@@ -147,6 +149,7 @@ using ClapMainThreadCallbackRequest =
std::variant.
+
+#pragma once
+
+#include
+
+#include "../../common.h"
+
+// Serialization messages for `clap/ext/latency.h`
+
+namespace clap {
+namespace ext {
+namespace latency {
+
+namespace plugin {
+
+/**
+ * Message struct for `clap_plugin_latency::get()`.
+ */
+struct Get {
+ using Response = PrimitiveResponse;
+
+ native_size_t instance_id;
+
+ template
+ void serialize(S& s) {
+ s.value8b(instance_id);
+ }
+};
+
+} // namespace plugin
+
+namespace host {
+
+/**
+ * Message struct for `clap_host_latency::changed()`.
+ */
+struct Changed {
+ using Response = Ack;
+
+ native_size_t owner_instance_id;
+
+ template
+ void serialize(S& s) {
+ s.value8b(owner_instance_id);
+ }
+};
+
+} // namespace host
+
+} // namespace latency
+} // namespace ext
+} // namespace clap
diff --git a/src/common/serialization/clap/host.cpp b/src/common/serialization/clap/host.cpp
index 30b5db68..a4bf863b 100644
--- a/src/common/serialization/clap/host.cpp
+++ b/src/common/serialization/clap/host.cpp
@@ -17,6 +17,7 @@
#include "host.h"
#include
+#include
#include
#include
#include
@@ -31,9 +32,10 @@ Host::Host(const clap_host_t& original)
url(original.url ? std::optional(original.url) : std::nullopt),
version((assert(original.version), original.version)) {}
-std::array, 4> SupportedHostExtensions::list()
+std::array, 5> SupportedHostExtensions::list()
const noexcept {
return {std::pair(supports_audio_ports, CLAP_EXT_AUDIO_PORTS),
+ std::pair(supports_latency, CLAP_EXT_LATENCY),
std::pair(supports_note_ports, CLAP_EXT_NOTE_PORTS),
std::pair(supports_params, CLAP_EXT_PARAMS),
std::pair(supports_tail, CLAP_EXT_TAIL)};
diff --git a/src/common/serialization/clap/host.h b/src/common/serialization/clap/host.h
index 6d1b52e6..4e4996d7 100644
--- a/src/common/serialization/clap/host.h
+++ b/src/common/serialization/clap/host.h
@@ -82,6 +82,7 @@ struct Host {
struct SupportedHostExtensions {
// Don't forget to add new extensions to below method
bool supports_audio_ports = false;
+ bool supports_latency = false;
bool supports_note_ports = false;
bool supports_params = false;
bool supports_tail = false;
@@ -90,11 +91,12 @@ struct SupportedHostExtensions {
* Get a list of `` tuples for the supported
* extensions. Used during logging.
*/
- std::array, 4> list() const noexcept;
+ std::array, 5> list() const noexcept;
template
void serialize(S& s) {
s.value1b(supports_audio_ports);
+ s.value1b(supports_latency);
s.value1b(supports_note_ports);
s.value1b(supports_params);
s.value1b(supports_tail);
diff --git a/src/common/serialization/clap/plugin.cpp b/src/common/serialization/clap/plugin.cpp
index 55919039..72d7d163 100644
--- a/src/common/serialization/clap/plugin.cpp
+++ b/src/common/serialization/clap/plugin.cpp
@@ -17,6 +17,7 @@
#include "plugin.h"
#include
+#include
#include
#include
#include
@@ -79,9 +80,10 @@ const clap_plugin_descriptor_t* Descriptor::get() const {
return &clap_descriptor;
}
-std::array, 4> SupportedPluginExtensions::list()
+std::array, 5> SupportedPluginExtensions::list()
const noexcept {
return {std::pair(supports_audio_ports, CLAP_EXT_AUDIO_PORTS),
+ std::pair(supports_latency, CLAP_EXT_LATENCY),
std::pair(supports_note_ports, CLAP_EXT_NOTE_PORTS),
std::pair(supports_params, CLAP_EXT_PARAMS),
std::pair(supports_tail, CLAP_EXT_TAIL)};
diff --git a/src/common/serialization/clap/plugin.h b/src/common/serialization/clap/plugin.h
index addd5179..795fba4c 100644
--- a/src/common/serialization/clap/plugin.h
+++ b/src/common/serialization/clap/plugin.h
@@ -115,6 +115,7 @@ struct Descriptor {
struct SupportedPluginExtensions {
// Don't forget to add new extensions to below method
bool supports_audio_ports = false;
+ bool supports_latency = false;
bool supports_note_ports = false;
bool supports_params = false;
bool supports_tail = false;
@@ -123,11 +124,12 @@ struct SupportedPluginExtensions {
* Get a list of `` tuples for the supported
* extensions. Used during logging.
*/
- std::array, 3> list() const noexcept;
+ std::array, 5> list() const noexcept;
template
void serialize(S& s) {
s.value1b(supports_audio_ports);
+ s.value1b(supports_latency);
s.value1b(supports_note_ports);
s.value1b(supports_params);
s.value1b(supports_tail);
diff --git a/src/plugin/bridges/clap-impls/plugin-proxy.cpp b/src/plugin/bridges/clap-impls/plugin-proxy.cpp
index e1e450c0..452c2c39 100644
--- a/src/plugin/bridges/clap-impls/plugin-proxy.cpp
+++ b/src/plugin/bridges/clap-impls/plugin-proxy.cpp
@@ -21,6 +21,8 @@
ClapHostExtensions::ClapHostExtensions(const clap_host& host) noexcept
: audio_ports(static_cast(
host.get_extension(&host, CLAP_EXT_AUDIO_PORTS))),
+ latency(static_cast(
+ host.get_extension(&host, CLAP_EXT_LATENCY))),
note_ports(static_cast(
host.get_extension(&host, CLAP_EXT_NOTE_PORTS))),
params(static_cast(
@@ -34,6 +36,7 @@ clap::host::SupportedHostExtensions ClapHostExtensions::supported()
const noexcept {
return clap::host::SupportedHostExtensions{
.supports_audio_ports = audio_ports != nullptr,
+ .supports_latency = latency != nullptr,
.supports_note_ports = note_ports != nullptr,
.supports_params = params != nullptr,
.supports_tail = tail != nullptr};
@@ -65,6 +68,9 @@ clap_plugin_proxy::clap_plugin_proxy(ClapPluginBridge& bridge,
.count = ext_audio_ports_count,
.get = ext_audio_ports_get,
}),
+ ext_latency_vtable(clap_plugin_latency_t{
+ .get = ext_latency_get,
+ }),
ext_note_ports_vtable(clap_plugin_note_ports_t{
.count = ext_note_ports_count,
.get = ext_note_ports_get,
@@ -210,6 +216,9 @@ clap_plugin_proxy::plugin_get_extension(const struct clap_plugin* plugin,
if (self->supported_extensions_.supports_audio_ports &&
strcmp(id, CLAP_EXT_AUDIO_PORTS) == 0) {
extension_ptr = &self->ext_audio_ports_vtable;
+ } else if (self->supported_extensions_.supports_latency &&
+ strcmp(id, CLAP_EXT_LATENCY) == 0) {
+ extension_ptr = &self->ext_latency_vtable;
} else if (self->supported_extensions_.supports_note_ports &&
strcmp(id, CLAP_EXT_NOTE_PORTS) == 0) {
extension_ptr = &self->ext_note_ports_vtable;
@@ -274,6 +283,15 @@ clap_plugin_proxy::ext_audio_ports_get(const clap_plugin_t* plugin,
}
}
+uint32_t CLAP_ABI
+clap_plugin_proxy::ext_latency_get(const clap_plugin_t* plugin) {
+ assert(plugin && plugin->plugin_data);
+ auto self = static_cast(plugin->plugin_data);
+
+ return self->bridge_.send_main_thread_message(
+ clap::ext::latency::plugin::Get{.instance_id = self->instance_id()});
+}
+
uint32_t CLAP_ABI
clap_plugin_proxy::ext_note_ports_count(const clap_plugin_t* plugin,
bool is_input) {
diff --git a/src/plugin/bridges/clap-impls/plugin-proxy.h b/src/plugin/bridges/clap-impls/plugin-proxy.h
index b032556a..cdd99c67 100644
--- a/src/plugin/bridges/clap-impls/plugin-proxy.h
+++ b/src/plugin/bridges/clap-impls/plugin-proxy.h
@@ -21,6 +21,7 @@
#include
#include
+#include
#include
#include
#include
@@ -60,6 +61,7 @@ struct ClapHostExtensions {
clap::host::SupportedHostExtensions supported() const noexcept;
const clap_host_audio_ports_t* audio_ports = nullptr;
+ const clap_host_latency_t* latency = nullptr;
const clap_host_note_ports_t* note_ports = nullptr;
const clap_host_params_t* params = nullptr;
const clap_host_tail_t* tail = nullptr;
@@ -137,6 +139,8 @@ class clap_plugin_proxy {
bool is_input,
clap_audio_port_info_t* info);
+ static uint32_t CLAP_ABI ext_latency_get(const clap_plugin_t* plugin);
+
static uint32_t CLAP_ABI ext_note_ports_count(const clap_plugin_t* plugin,
bool is_input);
static bool CLAP_ABI ext_note_ports_get(const clap_plugin_t* plugin,
@@ -240,6 +244,7 @@ class clap_plugin_proxy {
// depends on whether the plugin supported this extension when we called
// `clap_plugin::init()`.
const clap_plugin_audio_ports_t ext_audio_ports_vtable;
+ const clap_plugin_latency_t ext_latency_vtable;
const clap_plugin_note_ports_t ext_note_ports_vtable;
const clap_plugin_params_t ext_params_vtable;
const clap_plugin_tail_t ext_tail_vtable;
diff --git a/src/plugin/bridges/clap.cpp b/src/plugin/bridges/clap.cpp
index 49a21ac3..384501ad 100644
--- a/src/plugin/bridges/clap.cpp
+++ b/src/plugin/bridges/clap.cpp
@@ -115,6 +115,22 @@ ClapPluginBridge::ClapPluginBridge(const ghc::filesystem::path& plugin_path)
return Ack{};
},
+ [&](const clap::ext::latency::host::Changed& request)
+ -> clap::ext::latency::host::Changed::Response {
+ const auto& [plugin_proxy, _] =
+ get_proxy(request.owner_instance_id);
+
+ plugin_proxy
+ .run_on_main_thread(
+ [&, host = plugin_proxy.host_,
+ latency =
+ plugin_proxy.host_extensions_.latency]() {
+ latency->changed(host);
+ })
+ .wait();
+
+ return Ack{};
+ },
[&](const clap::ext::note_ports::host::SupportedDialects&
request)
-> clap::ext::note_ports::host::SupportedDialects::
diff --git a/src/wine-host/bridges/clap-impls/host-proxy.cpp b/src/wine-host/bridges/clap-impls/host-proxy.cpp
index e7a84607..a118dce8 100644
--- a/src/wine-host/bridges/clap-impls/host-proxy.cpp
+++ b/src/wine-host/bridges/clap-impls/host-proxy.cpp
@@ -48,6 +48,9 @@ clap_host_proxy::clap_host_proxy(ClapBridge& bridge,
.is_rescan_flag_supported = ext_audio_ports_is_rescan_flag_supported,
.rescan = ext_audio_ports_rescan,
}),
+ ext_latency_vtable(clap_host_latency_t{
+ .changed = ext_latency_changed,
+ }),
ext_note_ports_vtable(clap_host_note_ports_t{
.supported_dialects = ext_note_ports_supported_dialects,
.rescan = ext_note_ports_rescan,
@@ -71,6 +74,9 @@ clap_host_proxy::host_get_extension(const struct clap_host* host,
if (self->supported_extensions_.supports_audio_ports &&
strcmp(extension_id, CLAP_EXT_AUDIO_PORTS) == 0) {
extension_ptr = &self->ext_audio_ports_vtable;
+ } else if (self->supported_extensions_.supports_latency &&
+ strcmp(extension_id, CLAP_EXT_LATENCY) == 0) {
+ extension_ptr = &self->ext_latency_vtable;
} else if (self->supported_extensions_.supports_note_ports &&
strcmp(extension_id, CLAP_EXT_NOTE_PORTS) == 0) {
extension_ptr = &self->ext_note_ports_vtable;
@@ -157,6 +163,14 @@ void CLAP_ABI clap_host_proxy::ext_audio_ports_rescan(const clap_host_t* host,
.owner_instance_id = self->owner_instance_id(), .flags = flags});
}
+void CLAP_ABI clap_host_proxy::ext_latency_changed(const clap_host_t* host) {
+ assert(host && host->host_data);
+ auto self = static_cast(host->host_data);
+
+ self->bridge_.send_main_thread_message(clap::ext::latency::host::Changed{
+ .owner_instance_id = self->owner_instance_id()});
+}
+
uint32_t CLAP_ABI
clap_host_proxy::ext_note_ports_supported_dialects(const clap_host_t* host) {
assert(host && host->host_data);
diff --git a/src/wine-host/bridges/clap-impls/host-proxy.h b/src/wine-host/bridges/clap-impls/host-proxy.h
index 5a463dee..9656eb9d 100644
--- a/src/wine-host/bridges/clap-impls/host-proxy.h
+++ b/src/wine-host/bridges/clap-impls/host-proxy.h
@@ -19,6 +19,7 @@
#include
#include
+#include
#include
#include
#include
@@ -72,6 +73,8 @@ class clap_host_proxy {
static void CLAP_ABI ext_audio_ports_rescan(const clap_host_t* host,
uint32_t flags);
+ static void CLAP_ABI ext_latency_changed(const clap_host_t* host);
+
static uint32_t CLAP_ABI
ext_note_ports_supported_dialects(const clap_host_t* host);
static void CLAP_ABI ext_note_ports_rescan(const clap_host_t* host,
@@ -109,6 +112,7 @@ class clap_host_proxy {
// depends on whether the plugin supported this extension when the host
// called `clap_plugin::init()`.
const clap_host_audio_ports_t ext_audio_ports_vtable;
+ const clap_host_latency_t ext_latency_vtable;
const clap_host_note_ports_t ext_note_ports_vtable;
const clap_host_params_t ext_params_vtable;
const clap_host_tail_t ext_tail_vtable;
diff --git a/src/wine-host/bridges/clap.cpp b/src/wine-host/bridges/clap.cpp
index d78b9d2d..76634843 100644
--- a/src/wine-host/bridges/clap.cpp
+++ b/src/wine-host/bridges/clap.cpp
@@ -29,6 +29,8 @@ namespace fs = ghc::filesystem;
ClapPluginExtensions::ClapPluginExtensions(const clap_plugin& plugin) noexcept
: audio_ports(static_cast(
plugin.get_extension(&plugin, CLAP_EXT_AUDIO_PORTS))),
+ latency(static_cast(
+ plugin.get_extension(&plugin, CLAP_EXT_LATENCY))),
note_ports(static_cast(
plugin.get_extension(&plugin, CLAP_EXT_NOTE_PORTS))),
params(static_cast(
@@ -42,6 +44,7 @@ clap::plugin::SupportedPluginExtensions ClapPluginExtensions::supported()
const noexcept {
return clap::plugin::SupportedPluginExtensions{
.supports_audio_ports = audio_ports != nullptr,
+ .supports_latency = latency != nullptr,
.supports_note_ports = note_ports != nullptr,
.supports_params = params != nullptr,
.supports_tail = tail != nullptr};
@@ -342,6 +345,14 @@ void ClapBridge::run() {
.result = std::nullopt};
}
},
+ [&](clap::ext::latency::plugin::Get& request)
+ -> clap::ext::latency::plugin::Get::Response {
+ const auto& [instance, _] = get_instance(request.instance_id);
+
+ // We'll ignore the main thread requirement for simple lookups
+ // to avoid the synchronisation costs in hot code paths
+ return instance.extensions.latency->get(instance.plugin.get());
+ },
[&](const clap::ext::note_ports::plugin::Count& request)
-> clap::ext::note_ports::plugin::Count::Response {
const auto& [instance, _] = get_instance(request.instance_id);
diff --git a/src/wine-host/bridges/clap.h b/src/wine-host/bridges/clap.h
index d07d4e66..17f1ee7f 100644
--- a/src/wine-host/bridges/clap.h
+++ b/src/wine-host/bridges/clap.h
@@ -67,6 +67,7 @@ struct ClapPluginExtensions {
clap::plugin::SupportedPluginExtensions supported() const noexcept;
const clap_plugin_audio_ports_t* audio_ports = nullptr;
+ const clap_plugin_latency_t* latency = nullptr;
const clap_plugin_note_ports_t* note_ports = nullptr;
const clap_plugin_params_t* params = nullptr;
const clap_plugin_tail_t* tail = nullptr;