1/*
2 * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
3 * Not a Contribution.
4 *
5 * Copyright 2015 The Android Open Source Project
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 *      http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19
20#ifndef __HWC_LAYERS_H__
21#define __HWC_LAYERS_H__
22
23/* This class translates HWC2 Layer functions to the SDM LayerStack
24 */
25
26#include <gralloc_priv.h>
27#include <qdMetaData.h>
28#include <core/layer_stack.h>
29#define HWC2_INCLUDE_STRINGIFICATION
30#define HWC2_USE_CPP11
31#include <hardware/hwcomposer2.h>
32#undef HWC2_INCLUDE_STRINGIFICATION
33#undef HWC2_USE_CPP11
34#include <set>
35#include <map>
36#include <queue>
37
38namespace sdm {
39
40enum GeometryChanges {
41  kNone         = 0x000,
42  kBlendMode    = 0x001,
43  kDataspace    = 0x002,
44  kDisplayFrame = 0x004,
45  kPlaneAlpha   = 0x008,
46  kSourceCrop   = 0x010,
47  kTransform    = 0x020,
48  kZOrder       = 0x040,
49  kAdded        = 0x080,
50  kRemoved      = 0x100,
51};
52
53class HWCLayer {
54 public:
55  explicit HWCLayer(hwc2_display_t display_id);
56  ~HWCLayer();
57  uint32_t GetZ() const { return z_; }
58  hwc2_layer_t GetId() const { return id_; }
59  Layer *GetSDMLayer() { return layer_; }
60
61  HWC2::Error SetLayerBlendMode(HWC2::BlendMode mode);
62  HWC2::Error SetLayerBuffer(buffer_handle_t buffer, int32_t acquire_fence);
63  HWC2::Error SetLayerColor(hwc_color_t color);
64  HWC2::Error SetLayerCompositionType(HWC2::Composition type);
65  HWC2::Error SetLayerDataspace(int32_t dataspace);
66  HWC2::Error SetLayerDisplayFrame(hwc_rect_t frame);
67  HWC2::Error SetLayerPlaneAlpha(float alpha);
68  HWC2::Error SetLayerSourceCrop(hwc_frect_t crop);
69  HWC2::Error SetLayerSurfaceDamage(hwc_region_t damage);
70  HWC2::Error SetLayerTransform(HWC2::Transform transform);
71  HWC2::Error SetLayerVisibleRegion(hwc_region_t visible);
72  HWC2::Error SetLayerZOrder(uint32_t z);
73  void SetComposition(const LayerComposition &sdm_composition);
74  HWC2::Composition GetClientRequestedCompositionType() { return client_requested_; }
75  void UpdateClientCompositionType(HWC2::Composition type) { client_requested_ = type; }
76  HWC2::Composition GetDeviceSelectedCompositionType() { return device_selected_; }
77  uint32_t GetGeometryChanges() { return geometry_changes_; }
78  void ResetGeometryChanges() { geometry_changes_ = GeometryChanges::kNone; }
79  void PushReleaseFence(int32_t fence);
80  int32_t PopReleaseFence(void);
81
82 private:
83  Layer *layer_ = nullptr;
84  uint32_t z_ = 0;
85  const hwc2_layer_t id_;
86  const hwc2_display_t display_id_;
87  static std::atomic<hwc2_layer_t> next_id_;
88  std::queue<int32_t> release_fences_;
89  int ion_fd_ = -1;
90
91  // Composition requested by client(SF)
92  HWC2::Composition client_requested_ = HWC2::Composition::Device;
93  // Composition selected by SDM
94  HWC2::Composition device_selected_ = HWC2::Composition::Device;
95  uint32_t geometry_changes_ = GeometryChanges::kNone;
96
97  void SetRect(const hwc_rect_t &source, LayerRect *target);
98  void SetRect(const hwc_frect_t &source, LayerRect *target);
99  uint32_t GetUint32Color(const hwc_color_t &source);
100  LayerBufferFormat GetSDMFormat(const int32_t &source, const int flags);
101  LayerBufferS3DFormat GetS3DFormat(uint32_t s3d_format);
102  DisplayError SetMetaData(const private_handle_t *pvt_handle, Layer *layer);
103  DisplayError SetCSC(ColorSpace_t source, LayerCSC *target);
104  DisplayError SetIGC(IGC_t source, LayerIGC *target);
105  uint32_t RoundToStandardFPS(float fps);
106};
107
108struct SortLayersByZ {
109  bool operator()(const HWCLayer *lhs, const HWCLayer *rhs) {
110    return lhs->GetZ() < rhs->GetZ();
111  }
112};
113
114}  // namespace sdm
115#endif  // __HWC_LAYERS_H__
116