drm_hwcomposer: Move HwcLayer out of DrmHwcTwo class

... to reduce complexity of DrmHwcTwo.* files.

Bump-up tidy level of new files to NORMAL (fix function naming,
add NOLINT, etc.)

Signed-off-by: Roman Stratiienko <roman.o.stratiienko@globallogic.com>

1 files changed, 123 insertions, 0 deletions

diff --git a/hwc2_device/HwcLayer.h b/hwc2_device/HwcLayer.h
new file mode 100644
index 0000000..df4ce6d
--- /dev/null
+++ b/hwc2_device/HwcLayer.h
@@ -0,0 +1,123 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HWC2_DEVICE_HWC_LAYER_H
+#define ANDROID_HWC2_DEVICE_HWC_LAYER_H
+
+#include <hardware/hwcomposer2.h>
+
+#include <cmath>
+
+#include "drmhwcomposer.h"
+
+namespace android {
+
+class HwcLayer {
+ public:
+  HWC2::Composition GetSfType() const {
+    return sf_type_;
+  }
+  HWC2::Composition GetValidatedType() const {
+    return validated_type_;
+  }
+  void AcceptTypeChange() {
+    sf_type_ = validated_type_;
+  }
+  void SetValidatedType(HWC2::Composition type) {
+    validated_type_ = type;
+  }
+  bool IsTypeChanged() const {
+    return sf_type_ != validated_type_;
+  }
+
+  uint32_t GetZOrder() const {
+    return z_order_;
+  }
+
+  buffer_handle_t GetBuffer() {
+    return buffer_;
+  }
+
+  hwc_rect_t GetDisplayFrame() {
+    return display_frame_;
+  }
+
+  UniqueFd GetReleaseFence() {
+    return std::move(release_fence_);
+  }
+
+  void PopulateDrmLayer(DrmHwcLayer *layer);
+
+  bool RequireScalingOrPhasing() const {
+    float src_width = source_crop_.right - source_crop_.left;
+    float src_height = source_crop_.bottom - source_crop_.top;
+
+    auto dest_width = float(display_frame_.right - display_frame_.left);
+    auto dest_height = float(display_frame_.bottom - display_frame_.top);
+
+    bool scaling = src_width != dest_width || src_height != dest_height;
+    bool phasing = (source_crop_.left - std::floor(source_crop_.left) != 0) ||
+                   (source_crop_.top - std::floor(source_crop_.top) != 0);
+    return scaling || phasing;
+  }
+
+  // Layer hooks
+  HWC2::Error SetCursorPosition(int32_t /*x*/, int32_t /*y*/);
+  HWC2::Error SetLayerBlendMode(int32_t mode);
+  HWC2::Error SetLayerBuffer(buffer_handle_t buffer, int32_t acquire_fence);
+  HWC2::Error SetLayerColor(hwc_color_t /*color*/);
+  HWC2::Error SetLayerCompositionType(int32_t type);
+  HWC2::Error SetLayerDataspace(int32_t dataspace);
+  HWC2::Error SetLayerDisplayFrame(hwc_rect_t frame);
+  HWC2::Error SetLayerPlaneAlpha(float alpha);
+  HWC2::Error SetLayerSidebandStream(const native_handle_t *stream);
+  HWC2::Error SetLayerSourceCrop(hwc_frect_t crop);
+  HWC2::Error SetLayerSurfaceDamage(hwc_region_t damage);
+  HWC2::Error SetLayerTransform(int32_t transform);
+  HWC2::Error SetLayerVisibleRegion(hwc_region_t visible);
+  HWC2::Error SetLayerZOrder(uint32_t order);
+
+ private:
+  // sf_type_ stores the initial type given to us by surfaceflinger,
+  // validated_type_ stores the type after running ValidateDisplay
+  HWC2::Composition sf_type_ = HWC2::Composition::Invalid;
+  HWC2::Composition validated_type_ = HWC2::Composition::Invalid;
+
+  buffer_handle_t buffer_ = nullptr;
+  hwc_rect_t display_frame_;
+  static constexpr float kOpaqueFloat = 1.0F;
+  float alpha_ = kOpaqueFloat;
+  hwc_frect_t source_crop_;
+  DrmHwcTransform transform_ = DrmHwcTransform::kIdentity;
+  uint32_t z_order_ = 0;
+  DrmHwcBlending blending_ = DrmHwcBlending::kNone;
+  DrmHwcColorSpace color_space_ = DrmHwcColorSpace::kUndefined;
+  DrmHwcSampleRange sample_range_ = DrmHwcSampleRange::kUndefined;
+
+  UniqueFd acquire_fence_;
+
+  /*
+   * Release fence is not used.
+   * There is no release fence support available in the DRM/KMS. In case no
+   * release fence provided application will use this buffer for writing when
+   * the next frame present fence is signaled.
+   */
+  UniqueFd release_fence_;
+};
+
+}  // namespace android
+
+#endif