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#include "drmresources.h"
19
20#include <errno.h>
21#include <stdint.h>
22#include <string>
23
24#include <xf86drmMode.h>
25
26namespace android {
27
28DrmProperty::DrmPropertyEnum::DrmPropertyEnum(drm_mode_property_enum *e)
29    : value_(e->value), name_(e->name) {
30}
31
32DrmProperty::DrmPropertyEnum::~DrmPropertyEnum() {
33}
34
35DrmProperty::DrmProperty(drmModePropertyPtr p, uint64_t value)
36    : id_(0), type_(DRM_PROPERTY_TYPE_INVALID), flags_(0), name_("") {
37  Init(p, value);
38}
39
40DrmProperty::DrmProperty()
41    : id_(0),
42      type_(DRM_PROPERTY_TYPE_INVALID),
43      flags_(0),
44      name_(""),
45      value_(0) {
46}
47
48DrmProperty::~DrmProperty() {
49}
50
51void DrmProperty::Init(drmModePropertyPtr p, uint64_t value) {
52  id_ = p->prop_id;
53  flags_ = p->flags;
54  name_ = p->name;
55  value_ = value;
56
57  for (int i = 0; i < p->count_values; ++i)
58    values_.push_back(p->values[i]);
59
60  for (int i = 0; i < p->count_enums; ++i)
61    enums_.push_back(DrmPropertyEnum(&p->enums[i]));
62
63  for (int i = 0; i < p->count_blobs; ++i)
64    blob_ids_.push_back(p->blob_ids[i]);
65
66  if (flags_ & DRM_MODE_PROP_RANGE)
67    type_ = DRM_PROPERTY_TYPE_INT;
68  else if (flags_ & DRM_MODE_PROP_ENUM)
69    type_ = DRM_PROPERTY_TYPE_ENUM;
70  else if (flags_ & DRM_MODE_PROP_OBJECT)
71    type_ = DRM_PROPERTY_TYPE_OBJECT;
72  else if (flags_ & DRM_MODE_PROP_BLOB)
73    type_ = DRM_PROPERTY_TYPE_BLOB;
74}
75
76uint32_t DrmProperty::id() const {
77  return id_;
78}
79
80std::string DrmProperty::name() const {
81  return name_;
82}
83
84int DrmProperty::value(uint64_t *value) const {
85  if (type_ == DRM_PROPERTY_TYPE_BLOB) {
86    *value = value_;
87    return 0;
88  }
89
90  if (values_.size() == 0)
91    return -ENOENT;
92
93  switch (type_) {
94    case DRM_PROPERTY_TYPE_INT:
95      *value = value_;
96      return 0;
97
98    case DRM_PROPERTY_TYPE_ENUM:
99      if (value_ >= enums_.size())
100        return -ENOENT;
101
102      *value = enums_[value_].value_;
103      return 0;
104
105    case DRM_PROPERTY_TYPE_OBJECT:
106      *value = value_;
107      return 0;
108
109    default:
110      return -EINVAL;
111  }
112}
113}
114