api, logic: support "extensions" for pose transform

3 files changed, 50 insertions, 4 deletions

diff --git a/logic/selected-libraries.cpp b/logic/selected-libraries.cpp
index ffa3e496..1fc3da86 100644
--- a/logic/selected-libraries.cpp
+++ b/logic/selected-libraries.cpp
@@ -2,6 +2,24 @@
 #include "options/scoped.hpp"
 #include <QDebug>
 
+using ext_ord = IExtension::event_ordinal;
+using ext_mask = IExtension::event_mask;
+using ext_fun_type = void(IExtension::*)(Pose&);
+
+static constexpr struct event_type_mapping
+{
+    ext_fun_type ptr;
+    ext_mask m;
+    ext_ord idx;
+} ordinal_to_function[] = {
+    { &IExtension::process_raw, ext_mask::on_raw, ext_ord::ev_raw, },
+    { &IExtension::process_after_center, ext_mask::on_after_center, ext_ord::ev_after_center, },
+    { &IExtension::process_before_filter, ext_mask::on_before_filter, ext_ord::ev_before_filter, },
+    { &IExtension::process_before_transform, ext_mask::on_before_transform, ext_ord::ev_before_transform, },
+    { &IExtension::process_before_mapping, ext_mask::on_before_mapping, ext_ord::ev_before_mapping, },
+    { &IExtension::process_finished, ext_mask::on_finished, ext_ord::ev_finished, },
+};
+
 SelectedLibraries::SelectedLibraries(QFrame* frame, dylibptr t, dylibptr p, dylibptr f) :
     pTracker(nullptr),
     pFilter(nullptr),
@@ -44,3 +62,15 @@ SelectedLibraries::SelectedLibraries(QFrame* frame, dylibptr t, dylibptr p, dyli
 end:
     opts::set_teardown_flag(prev_teardown_flag);
 }
+
+void runtime_event_handler::run_events(ext_event_ordinal k, Pose& pose)
+{
+    auto fun = std::mem_fn(ordinal_to_function[k].ptr);
+
+    for (ext& x : extension_events[k])
+    {
+        if (x == nullptr)
+            break;
+        fun(x, pose);
+    }
+}
diff --git a/logic/selected-libraries.hpp b/logic/selected-libraries.hpp
index 65e9733e..041c77e5 100644
--- a/logic/selected-libraries.hpp
+++ b/logic/selected-libraries.hpp
@@ -9,11 +9,29 @@
 #pragma once
 
 #include "api/plugin-support.hpp"
+#include "export.hpp"
+
+#include <array>
+#include <functional>
+
 #include <QFrame>
 
-#include "export.hpp"
+// XXX todo remove camel case in identifier
+
+struct runtime_event_handler
+{
+    using ext_event_ordinal = IExtension::event_ordinal;
+    using ext = std::shared_ptr<IExtension>;
+
+    enum : unsigned { ext_max_events = 64 };
+    using ext_list = std::array<ext, ext_max_events>;
+
+    std::array<ext_list, ext_event_ordinal::event_count> extension_events;
+
+    void run_events(ext_event_ordinal k, Pose& pose);
+};
 
-struct OTR_LOGIC_EXPORT SelectedLibraries
+struct OTR_LOGIC_EXPORT SelectedLibraries : runtime_event_handler
 {
     using dylibptr = std::shared_ptr<dylib>;
 
diff --git a/logic/tracker.h b/logic/tracker.h
index 282b5c5b..ab0cc323 100644
--- a/logic/tracker.h
+++ b/logic/tracker.h
@@ -31,8 +31,6 @@
 
 namespace gui_tracker_impl {
 
-using Pose = Mat<double, 6, 1>;
-
 struct bits
 {
     enum flags : unsigned {