1 files changed, 59 insertions, 0 deletions
diff --git a/compositor/DrmKmsPlan.cpp b/compositor/DrmKmsPlan.cpp
new file mode 100644
index 0000000..966bd4e
--- /dev/null
+++ b/compositor/DrmKmsPlan.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "hwc-composition-drm-kms-plan"
+
+#include "DrmKmsPlan.h"
+
+#include "drm/DrmDevice.h"
+#include "drm/DrmPlane.h"
+#include "utils/log.h"
+
+namespace android {
+auto DrmKmsPlan::CreateDrmKmsPlan(DrmDisplayPipeline &pipe,
+                                  std::vector<DrmHwcLayer> composition)
+    -> std::unique_ptr<DrmKmsPlan> {
+  auto plan = std::make_unique<DrmKmsPlan>();
+
+  auto avail_planes = pipe.GetUsablePlanes();
+
+  int z_pos = 0;
+  for (auto &dhl : composition) {
+    std::shared_ptr<BindingOwner<DrmPlane>> plane;
+
+    /* Skip unsupported planes */
+    do {
+      if (avail_planes.empty()) {
+        return {};
+      }
+
+      plane = *avail_planes.begin();
+      avail_planes.erase(avail_planes.begin());
+    } while (!plane->Get()->IsValidForLayer(&dhl));
+
+    LayerToPlaneJoining joining = {
+        .layer = std::move(dhl),
+        .plane = plane,
+        .z_pos = z_pos++,
+    };
+
+    plan->plan.emplace_back(std::move(joining));
+  }
+
+  return plan;
+}
+
+}  // namespace android