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 #include "DrmProperty.h"
18
19 #include <errno.h>
20 #include <stdint.h>
21 #include <xf86drmMode.h>
22
23 #include <string>
24
25 #include "DrmDevice.h"
26
27 namespace android {
28
DrmPropertyEnum(drm_mode_property_enum * e)29 DrmProperty::DrmPropertyEnum::DrmPropertyEnum(drm_mode_property_enum *e)
30 : value_(e->value), name_(e->name) {
31 }
32
~DrmPropertyEnum()33 DrmProperty::DrmPropertyEnum::~DrmPropertyEnum() {
34 }
35
DrmProperty(drmModePropertyPtr p,uint64_t value)36 DrmProperty::DrmProperty(drmModePropertyPtr p, uint64_t value)
37 : id_(0), type_(DRM_PROPERTY_TYPE_INVALID), flags_(0), name_("") {
38 Init(p, value);
39 }
40
Init(drmModePropertyPtr p,uint64_t value)41 void DrmProperty::Init(drmModePropertyPtr p, uint64_t value) {
42 id_ = p->prop_id;
43 flags_ = p->flags;
44 name_ = p->name;
45 value_ = value;
46
47 for (int i = 0; i < p->count_values; ++i)
48 values_.push_back(p->values[i]);
49
50 for (int i = 0; i < p->count_enums; ++i)
51 enums_.push_back(DrmPropertyEnum(&p->enums[i]));
52
53 for (int i = 0; i < p->count_blobs; ++i)
54 blob_ids_.push_back(p->blob_ids[i]);
55
56 if (flags_ & DRM_MODE_PROP_RANGE)
57 type_ = DRM_PROPERTY_TYPE_INT;
58 else if (flags_ & DRM_MODE_PROP_ENUM)
59 type_ = DRM_PROPERTY_TYPE_ENUM;
60 else if (flags_ & DRM_MODE_PROP_OBJECT)
61 type_ = DRM_PROPERTY_TYPE_OBJECT;
62 else if (flags_ & DRM_MODE_PROP_BLOB)
63 type_ = DRM_PROPERTY_TYPE_BLOB;
64 }
65
id() const66 uint32_t DrmProperty::id() const {
67 return id_;
68 }
69
name() const70 std::string DrmProperty::name() const {
71 return name_;
72 }
73
value() const74 std::tuple<int, uint64_t> DrmProperty::value() const {
75 if (type_ == DRM_PROPERTY_TYPE_BLOB)
76 return std::make_tuple(0, value_);
77
78 if (values_.size() == 0)
79 return std::make_tuple(-ENOENT, 0);
80
81 switch (type_) {
82 case DRM_PROPERTY_TYPE_INT:
83 return std::make_tuple(0, value_);
84
85 case DRM_PROPERTY_TYPE_ENUM:
86 if (value_ >= enums_.size())
87 return std::make_tuple(-ENOENT, 0);
88
89 return std::make_tuple(0, enums_[value_].value_);
90
91 case DRM_PROPERTY_TYPE_OBJECT:
92 return std::make_tuple(0, value_);
93
94 default:
95 return std::make_tuple(-EINVAL, 0);
96 }
97 }
98
is_immutable() const99 bool DrmProperty::is_immutable() const {
100 return id_ && (flags_ & DRM_MODE_PROP_IMMUTABLE);
101 }
102
is_range() const103 bool DrmProperty::is_range() const {
104 return id_ && (flags_ & DRM_MODE_PROP_RANGE);
105 }
106
range_min() const107 std::tuple<int, uint64_t> DrmProperty::range_min() const {
108 if (!is_range())
109 return std::make_tuple(-EINVAL, 0);
110 if (values_.size() < 1)
111 return std::make_tuple(-ENOENT, 0);
112
113 return std::make_tuple(0, values_[0]);
114 }
115
range_max() const116 std::tuple<int, uint64_t> DrmProperty::range_max() const {
117 if (!is_range())
118 return std::make_tuple(-EINVAL, 0);
119 if (values_.size() < 2)
120 return std::make_tuple(-ENOENT, 0);
121
122 return std::make_tuple(0, values_[1]);
123 }
124
GetEnumValueWithName(std::string name) const125 std::tuple<uint64_t, int> DrmProperty::GetEnumValueWithName(
126 std::string name) const {
127 for (auto it : enums_) {
128 if (it.name_.compare(name) == 0) {
129 return std::make_tuple(it.value_, 0);
130 }
131 }
132
133 return std::make_tuple(UINT64_MAX, -EINVAL);
134 }
135 } // namespace android
136