1 /*
2  * Copyright (C) 2016 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 DEFAULT_CAMERA_HAL_METADATA_TYPES_H_
18 #define DEFAULT_CAMERA_HAL_METADATA_TYPES_H_
19 
20 #include <array>
21 #include <map>
22 #include <set>
23 
24 #include <hardware/camera3.h>
25 
26 namespace default_camera_hal {
27 
28 // A variety of Structs describing more complex metadata entries.
29 
30 // StreamSpec describe the attributes of a single stream.
31 struct StreamSpec {
32   int32_t format;
33   int32_t width;
34   int32_t height;
35 
StreamSpecStreamSpec36   StreamSpec(int32_t f, int32_t w, int32_t h)
37       : format(f), width(w), height(h) {}
StreamSpecStreamSpec38   StreamSpec(const camera3_stream_t* stream)
39       : format(stream->format), width(stream->width), height(stream->height) {}
40 
41   struct Compare {
operatorStreamSpec::Compare42     bool operator()(const StreamSpec& left, const StreamSpec& right) const {
43       // Base equality/comparison first on format, then on width, then height.
44       return left.format < right.format ||
45              (left.format == right.format &&
46               (left.width < right.width ||
47                (left.width == right.width && left.height < right.height)));
48     }
49   };
50 };
51 
52 // StreamConfigurations indicate a possible direction configuration for
53 // a given set of stream specifications.
54 typedef std::array<int32_t, 4> RawStreamConfiguration;
55 struct StreamConfiguration {
56   StreamSpec spec;
57   int32_t direction;
58 
StreamConfigurationStreamConfiguration59   StreamConfiguration(const RawStreamConfiguration& raw)
60       : spec({raw[0], raw[1], raw[2]}), direction(raw[3]) {}
61 };
62 
63 // StreamStallDurations indicate the stall duration (in ns) for
64 // when a stream with a given set of specifications is used as output.
65 typedef std::array<int64_t, 4> RawStreamStallDuration;
66 struct StreamStallDuration {
67   StreamSpec spec;
68   int64_t duration;
69 
StreamStallDurationStreamStallDuration70   StreamStallDuration(const RawStreamStallDuration& raw)
71       : spec({static_cast<int32_t>(raw[0]),
72               static_cast<int32_t>(raw[1]),
73               static_cast<int32_t>(raw[2])}),
74         duration(raw[3]) {}
75 };
76 
77 // Map input formats to their supported reprocess output formats.
78 typedef std::map<int32_t, std::set<int32_t>> ReprocessFormatMap;
79 
80 }  // namespace default_camera_hal
81 
82 #endif  // DEFAULT_CAMERA_HAL_METADATA_TYPES_H_
83