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      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 
     36   StreamSpec(int32_t f, int32_t w, int32_t h)
     37       : format(f), width(w), height(h) {}
     38   StreamSpec(const camera3_stream_t* stream)
     39       : format(stream->format), width(stream->width), height(stream->height) {}
     40 
     41   struct Compare {
     42     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 
     59   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 
     70   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