tracker/pt: clean up grayscale handling. add migration.

The averaging mode is slower than the opencv SIMD implementation
for BT.709. Remove it.

Make it optional to perform hardware grayscaling using the ps3eye sensor
with the open driver. Default to grayscaling using the CPU.

1 files changed, 38 insertions, 0 deletions

diff --git a/migration/20220105_00-pt-grayscale.cpp b/migration/20220105_00-pt-grayscale.cpp
new file mode 100644
index 00000000..44bdc470
--- /dev/null
+++ b/migration/20220105_00-pt-grayscale.cpp
@@ -0,0 +1,38 @@
+#include "migration.hpp"
+#include "options/options.hpp"
+
+using namespace migrations;
+using namespace options;
+
+#include "api/plugin-support.hpp"
+#include "compat/library-path.hpp"
+
+struct pt_color_grayscale : migration
+{
+    bundle b { make_bundle("tracker-pt") };
+    enum : int { pt_color_average = 5, pt_color_bt709 = 2, };
+
+    QString unique_date() const override
+    {
+        return "20220105_00";
+    }
+
+    QString name() const override
+    {
+        return "pt color enum";
+    }
+
+    bool should_run() const override
+    {
+        auto x = b->get_variant("blob-color").toInt();
+        return x == pt_color_average;
+    }
+
+    void run() override
+    {
+        b->store_kv("blob-color", QVariant::fromValue((int)pt_color_bt709));
+        b->save();
+    }
+};
+
+OPENTRACK_MIGRATION(pt_color_grayscale)