1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ANDROID_DRM_DISPLAY_COMPOSITION_H_
18 #define ANDROID_DRM_DISPLAY_COMPOSITION_H_
19 
20 #include "drm_hwcomposer.h"
21 #include "drmplane.h"
22 #include "importer.h"
23 
24 #include <vector>
25 
26 #include <hardware/hardware.h>
27 #include <hardware/hwcomposer.h>
28 
29 namespace android {
30 
31 enum DrmCompositionType {
32   DRM_COMPOSITION_TYPE_EMPTY,
33   DRM_COMPOSITION_TYPE_FRAME,
34   DRM_COMPOSITION_TYPE_DPMS,
35 };
36 
37 typedef struct DrmCompositionLayer {
38   DrmCompositionLayer();
39   ~DrmCompositionLayer();
40 
41   hwc_layer_1_t layer;
42   hwc_drm_bo_t bo;
43   DrmCrtc *crtc;
44   DrmPlane *plane;
45 } DrmCompositionLayer_t;
46 typedef std::vector<DrmCompositionLayer_t> DrmCompositionLayerVector_t;
47 
48 class DrmDisplayComposition {
49  public:
50   DrmDisplayComposition();
51   ~DrmDisplayComposition();
52 
53   int Init(DrmResources *drm, Importer *importer);
54 
55   DrmCompositionType type() const;
56 
57   int AddLayer(hwc_layer_1_t *layer, hwc_drm_bo_t *bo, DrmCrtc *crtc,
58                DrmPlane *plane);
59   int AddDpmsMode(uint32_t dpms_mode);
60 
61   int FinishComposition();
62 
63   DrmCompositionLayerVector_t *GetCompositionLayers();
64   uint32_t dpms_mode() const;
65 
66  private:
67   DrmDisplayComposition(const DrmDisplayComposition &) = delete;
68 
69   bool validate_composition_type(DrmCompositionType desired);
70 
71   DrmResources *drm_;
72   Importer *importer_;
73 
74   DrmCompositionType type_;
75 
76   int timeline_fd_;
77   int timeline_;
78 
79   DrmCompositionLayerVector_t layers_;
80   uint32_t dpms_mode_;
81 };
82 }
83 
84 #endif  // ANDROID_DRM_DISPLAY_COMPOSITION_H_
85