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_PROPERTY_H_
18 #define ANDROID_DRM_PROPERTY_H_
19 
20 #include <stdint.h>
21 #include <xf86drmMode.h>
22 
23 #include <string>
24 #include <vector>
25 
26 namespace android {
27 
28 enum DrmPropertyType {
29   DRM_PROPERTY_TYPE_INT,
30   DRM_PROPERTY_TYPE_ENUM,
31   DRM_PROPERTY_TYPE_OBJECT,
32   DRM_PROPERTY_TYPE_BLOB,
33   DRM_PROPERTY_TYPE_INVALID,
34 };
35 
36 class DrmProperty {
37  public:
38   DrmProperty() = default;
39   DrmProperty(drmModePropertyPtr p, uint64_t value);
40   DrmProperty(const DrmProperty &) = delete;
41   DrmProperty &operator=(const DrmProperty &) = delete;
42 
43   void Init(drmModePropertyPtr p, uint64_t value);
44   std::tuple<uint64_t, int> GetEnumValueWithName(std::string name) const;
45 
46   uint32_t id() const;
47   std::string name() const;
48 
49   std::tuple<int, uint64_t> value() const;
50   bool is_immutable() const;
51 
52   bool is_range() const;
53   std::tuple<int, uint64_t> range_min() const;
54   std::tuple<int, uint64_t> range_max() const;
55 
56  private:
57   class DrmPropertyEnum {
58    public:
59     DrmPropertyEnum(drm_mode_property_enum *e);
60     ~DrmPropertyEnum();
61 
62     uint64_t value_;
63     std::string name_;
64   };
65 
66   uint32_t id_ = 0;
67 
68   DrmPropertyType type_ = DRM_PROPERTY_TYPE_INVALID;
69   uint32_t flags_ = 0;
70   std::string name_;
71   uint64_t value_ = 0;
72 
73   std::vector<uint64_t> values_;
74   std::vector<DrmPropertyEnum> enums_;
75   std::vector<uint32_t> blob_ids_;
76 };
77 }  // namespace android
78 
79 #endif  // ANDROID_DRM_PROPERTY_H_
80