modules/camera/3_4/metadata/metadata_reader_test.cpp - platform/hardware/libhardware - Git at Google

 /*
  * Copyright (C) 2016 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include "metadata_reader.h"

 #include <camera/CameraMetadata.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 #include <system/camera.h>

 #include "array_vector.h"
 #include "metadata_common.h"

 using testing::AtMost;
 using testing::Expectation;
 using testing::Return;
 using testing::Test;

 namespace default_camera_hal {

 class MetadataReaderTest : public Test {
  protected:
   void SetUp() {
     ResetMetadata();
     // FillDUT should be called before using the device under test.
     dut_.reset();
   }

   void ResetMetadata() {
     metadata_ = std::make_unique<android::CameraMetadata>();
   }

   void FillDUT() {
     dut_ = std::make_unique<MetadataReader>(std::move(metadata_));
     ResetMetadata();
   }

   std::unique_ptr<MetadataReader> dut_;
   std::unique_ptr<android::CameraMetadata> metadata_;

   const int32_t facing_tag_ = ANDROID_LENS_FACING;
   const int32_t orientation_tag_ = ANDROID_SENSOR_ORIENTATION;
   const int32_t max_inputs_tag_ = ANDROID_REQUEST_MAX_NUM_INPUT_STREAMS;
   const int32_t max_outputs_tag_ = ANDROID_REQUEST_MAX_NUM_OUTPUT_STREAMS;
   const int32_t configs_tag_ = ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS;
   const int32_t stalls_tag_ = ANDROID_SCALER_AVAILABLE_STALL_DURATIONS;
   const int32_t reprocess_formats_tag_ =
       ANDROID_SCALER_AVAILABLE_INPUT_OUTPUT_FORMATS_MAP;

   const std::vector<int32_t> valid_orientations_ = {0, 90, 180, 270};
   // TODO(b/31384253): check for required configs/reprocess formats.
 };

 TEST_F(MetadataReaderTest, FacingTranslations) {
   // Check that the enums are converting properly.
   std::map<uint8_t, int> translations{
       {ANDROID_LENS_FACING_FRONT, CAMERA_FACING_FRONT},
       {ANDROID_LENS_FACING_BACK, CAMERA_FACING_BACK},
       {ANDROID_LENS_FACING_EXTERNAL, CAMERA_FACING_EXTERNAL}};
   for (const auto& translation : translations) {
     ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                   metadata_.get(), facing_tag_, translation.first),
               0);
     FillDUT();

     int expected = translation.second;
     int actual = expected + 1;
     EXPECT_EQ(dut_->Facing(&actual), 0);
     EXPECT_EQ(actual, expected);
   }
 }

 TEST_F(MetadataReaderTest, InvalidFacing) {
   uint8_t invalid = 99;
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), facing_tag_, invalid),
       0);
   FillDUT();
   int actual = 0;
   EXPECT_EQ(dut_->Facing(&actual), -EINVAL);
 }

 TEST_F(MetadataReaderTest, EmptyFacing) {
   FillDUT();
   int actual = 0;
   EXPECT_EQ(dut_->Facing(&actual), -ENOENT);
 }

 TEST_F(MetadataReaderTest, ValidOrientations) {
   for (int32_t orientation : valid_orientations_) {
     ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                   metadata_.get(), orientation_tag_, orientation),
               0);
     FillDUT();

     int actual = orientation + 1;
     EXPECT_EQ(dut_->Orientation(&actual), 0);
     EXPECT_EQ(actual, orientation);
   }
 }

 TEST_F(MetadataReaderTest, InvalidOrientations) {
   // High.
   for (int32_t orientation : valid_orientations_) {
     ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                   metadata_.get(), orientation_tag_, orientation + 1),
               0);
     FillDUT();
     int actual = 0;
     EXPECT_EQ(dut_->Orientation(&actual), -EINVAL);
   }
   // Low.
   for (int32_t orientation : valid_orientations_) {
     ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                   metadata_.get(), orientation_tag_, orientation - 1),
               0);
     FillDUT();
     int actual = 0;
     EXPECT_EQ(dut_->Orientation(&actual), -EINVAL);
   }
 }

 TEST_F(MetadataReaderTest, EmptyOrientation) {
   FillDUT();
   int actual = 0;
   EXPECT_EQ(dut_->Orientation(&actual), -ENOENT);
 }

 TEST_F(MetadataReaderTest, MaxInputs) {
   int32_t expected = 12;
   ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                 metadata_.get(), max_inputs_tag_, expected),
             0);
   FillDUT();
   int32_t actual = expected + 1;
   ASSERT_EQ(dut_->MaxInputStreams(&actual), 0);
   EXPECT_EQ(actual, expected);
 }

 TEST_F(MetadataReaderTest, EmptyMaxInputs) {
   FillDUT();
   // Max inputs is an optional key; if not present the default is 0.
   int32_t expected = 0;
   int32_t actual = expected + 1;
   ASSERT_EQ(dut_->MaxInputStreams(&actual), 0);
   EXPECT_EQ(actual, expected);
 }

 TEST_F(MetadataReaderTest, MaxOutputs) {
   std::array<int32_t, 3> expected = {{12, 34, 56}};
   ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                 metadata_.get(), max_outputs_tag_, expected),
             0);
   FillDUT();
   std::array<int32_t, 3> actual;
   ASSERT_EQ(dut_->MaxOutputStreams(&actual[0], &actual[1], &actual[2]), 0);
   EXPECT_EQ(actual, expected);
 }

 TEST_F(MetadataReaderTest, InvalidMaxOutputs) {
   // Must be a 3-tuple to be valid.
   std::array<int32_t, 4> invalid = {{12, 34, 56, 78}};
   ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                 metadata_.get(), max_outputs_tag_, invalid),
             0);
   FillDUT();
   int32_t actual;
   // Don't mind the aliasing since we don't care about the value.
   ASSERT_EQ(dut_->MaxOutputStreams(&actual, &actual, &actual), -EINVAL);
 }

 TEST_F(MetadataReaderTest, EmptyMaxOutputs) {
   FillDUT();
   int32_t actual;
   // Don't mind the aliasing since we don't care about the value.
   ASSERT_EQ(dut_->MaxOutputStreams(&actual, &actual, &actual), -ENOENT);
 }

 TEST_F(MetadataReaderTest, StreamConfigurations) {
   v4l2_camera_hal::ArrayVector<int32_t, 4> configs;
   std::array<int32_t, 4> config1{
       {1, 2, 3, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT}};
   std::array<int32_t, 4> config2{
       {5, 6, 7, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT}};
   configs.push_back(config1);
   configs.push_back(config2);
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), configs_tag_, configs),
       0);
   FillDUT();
   std::vector<StreamConfiguration> actual;
   ASSERT_EQ(dut_->StreamConfigurations(&actual), 0);
   ASSERT_EQ(actual.size(), configs.num_arrays());
   EXPECT_EQ(actual[0].spec.format, config1[0]);
   EXPECT_EQ(actual[0].spec.width, config1[1]);
   EXPECT_EQ(actual[0].spec.height, config1[2]);
   EXPECT_EQ(actual[0].direction, config1[3]);
   EXPECT_EQ(actual[1].spec.format, config2[0]);
   EXPECT_EQ(actual[1].spec.width, config2[1]);
   EXPECT_EQ(actual[1].spec.height, config2[2]);
   EXPECT_EQ(actual[1].direction, config2[3]);
 }

 TEST_F(MetadataReaderTest, InvalidStreamConfigurationDirection) {
   // -1 is not a valid direction.
   std::array<int32_t, 4> config{{1, 2, 3, -1}};
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), configs_tag_, config),
       0);
   FillDUT();
   std::vector<StreamConfiguration> actual;
   ASSERT_EQ(dut_->StreamConfigurations(&actual), -EINVAL);
 }

 TEST_F(MetadataReaderTest, InvalidStreamConfigurationSize) {
   // Both size dimensions must be > 0.
   std::array<int32_t, 4> config{
       {1, 2, 0, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT}};
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), configs_tag_, config),
       0);
   FillDUT();
   std::vector<StreamConfiguration> actual;
   ASSERT_EQ(dut_->StreamConfigurations(&actual), -EINVAL);
 }

 TEST_F(MetadataReaderTest, InvalidStreamConfigurationNumElements) {
   // Should be a multiple of 4.
   std::array<int32_t, 5> config{
       {1, 2, 3, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT, 5}};
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), configs_tag_, config),
       0);
   FillDUT();
   std::vector<StreamConfiguration> actual;
   ASSERT_EQ(dut_->StreamConfigurations(&actual), -EINVAL);
 }

 // TODO(b/31384253): Test that failure occurs if
 // required configurations are not present.

 TEST_F(MetadataReaderTest, NoStreamConfigurations) {
   FillDUT();
   std::vector<StreamConfiguration> actual;
   ASSERT_EQ(dut_->StreamConfigurations(&actual), -ENOENT);
 }

 TEST_F(MetadataReaderTest, StreamStallDurations) {
   v4l2_camera_hal::ArrayVector<int64_t, 4> stalls;
   std::array<int64_t, 4> stall1{{1, 2, 3, 4}};
   std::array<int64_t, 4> stall2{{5, 6, 7, 8}};
   stalls.push_back(stall1);
   stalls.push_back(stall2);
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), stalls_tag_, stalls), 0);
   FillDUT();
   std::vector<StreamStallDuration> actual;
   ASSERT_EQ(dut_->StreamStallDurations(&actual), 0);
   ASSERT_EQ(actual.size(), stalls.num_arrays());
   EXPECT_EQ(actual[0].spec.format, stall1[0]);
   EXPECT_EQ(actual[0].spec.width, stall1[1]);
   EXPECT_EQ(actual[0].spec.height, stall1[2]);
   EXPECT_EQ(actual[0].duration, stall1[3]);
   EXPECT_EQ(actual[1].spec.format, stall2[0]);
   EXPECT_EQ(actual[1].spec.width, stall2[1]);
   EXPECT_EQ(actual[1].spec.height, stall2[2]);
   EXPECT_EQ(actual[1].duration, stall2[3]);
 }

 TEST_F(MetadataReaderTest, InvalidStreamStallDurationDuration) {
   // -1 is not a valid duration.
   std::array<int64_t, 4> stall{{1, 2, 3, -1}};
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), stalls_tag_, stall), 0);
   FillDUT();
   std::vector<StreamStallDuration> actual;
   ASSERT_EQ(dut_->StreamStallDurations(&actual), -EINVAL);
 }

 TEST_F(MetadataReaderTest, InvalidStreamStallDurationSize) {
   // Both size dimensions must be > 0.
   std::array<int64_t, 4> stall{{1, 2, 0, 3}};
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), stalls_tag_, stall), 0);
   FillDUT();
   std::vector<StreamStallDuration> actual;
   ASSERT_EQ(dut_->StreamStallDurations(&actual), -EINVAL);
 }

 TEST_F(MetadataReaderTest, InvalidStreamStallDurationNumElements) {
   // Should be a multiple of 4.
   std::array<int64_t, 5> stall{{1, 2, 3, 4, 5}};
   ASSERT_EQ(
       v4l2_camera_hal::UpdateMetadata(metadata_.get(), stalls_tag_, stall), 0);
   FillDUT();
   std::vector<StreamStallDuration> actual;
   ASSERT_EQ(dut_->StreamStallDurations(&actual), -EINVAL);
 }

 // TODO(b/31384253): Test that failure occurs if
 // YUV_420_888, RAW10, RAW12, RAW_OPAQUE, or IMPLEMENTATION_DEFINED
 // formats have stall durations > 0.

 TEST_F(MetadataReaderTest, NoStreamStallDurations) {
   FillDUT();
   std::vector<StreamStallDuration> actual;
   ASSERT_EQ(dut_->StreamStallDurations(&actual), -ENOENT);
 }

 TEST_F(MetadataReaderTest, ReprocessFormats) {
   ReprocessFormatMap expected{{1, {4}}, {2, {5, 6}}, {3, {7, 8, 9}}};
   std::vector<int32_t> raw;
   for (const auto& input_outputs : expected) {
     raw.push_back(input_outputs.first);
     raw.push_back(input_outputs.second.size());
     raw.insert(
         raw.end(), input_outputs.second.begin(), input_outputs.second.end());
   }
   ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                 metadata_.get(), reprocess_formats_tag_, raw),
             0);
   FillDUT();
   ReprocessFormatMap actual;
   ASSERT_EQ(dut_->ReprocessFormats(&actual), 0);
   EXPECT_EQ(actual, expected);
 }

 TEST_F(MetadataReaderTest, ReprocessFormatsNoOutputs) {
   // 0 indicates that there are 0 output formats for input format 1,
   // which is not ok.
   std::vector<int32_t> raw{1, 0};
   ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                 metadata_.get(), reprocess_formats_tag_, raw),
             0);
   FillDUT();
   ReprocessFormatMap actual;
   ASSERT_EQ(dut_->ReprocessFormats(&actual), -EINVAL);
 }

 TEST_F(MetadataReaderTest, ReprocessFormatsPastEnd) {
   // 3 indicates that there are 3 output formats for input format 1,
   // which is not ok since there are only 2 here.
   std::vector<int32_t> raw{1, 3, 0, 0};
   ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
                 metadata_.get(), reprocess_formats_tag_, raw),
             0);
   FillDUT();
   ReprocessFormatMap actual;
   ASSERT_EQ(dut_->ReprocessFormats(&actual), -EINVAL);
 }

 TEST_F(MetadataReaderTest, EmptyReprocessFormats) {
   FillDUT();
   ReprocessFormatMap actual;
   ASSERT_EQ(dut_->ReprocessFormats(&actual), -ENOENT);
 }

 }  // namespace default_camera_hal
	/*
	* Copyright (C) 2016 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include "metadata_reader.h"

	#include <camera/CameraMetadata.h>
	#include <gmock/gmock.h>
	#include <gtest/gtest.h>
	#include <system/camera.h>

	#include "array_vector.h"
	#include "metadata_common.h"

	using testing::AtMost;
	using testing::Expectation;
	using testing::Return;
	using testing::Test;

	namespace default_camera_hal {

	class MetadataReaderTest : public Test {
	protected:
	void SetUp() {
	ResetMetadata();
	// FillDUT should be called before using the device under test.
	dut_.reset();
	}

	void ResetMetadata() {
	metadata_ = std::make_unique<android::CameraMetadata>();
	}

	void FillDUT() {
	dut_ = std::make_unique<MetadataReader>(std::move(metadata_));
	ResetMetadata();
	}

	std::unique_ptr<MetadataReader> dut_;
	std::unique_ptr<android::CameraMetadata> metadata_;

	const int32_t facing_tag_ = ANDROID_LENS_FACING;
	const int32_t orientation_tag_ = ANDROID_SENSOR_ORIENTATION;
	const int32_t max_inputs_tag_ = ANDROID_REQUEST_MAX_NUM_INPUT_STREAMS;
	const int32_t max_outputs_tag_ = ANDROID_REQUEST_MAX_NUM_OUTPUT_STREAMS;
	const int32_t configs_tag_ = ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS;
	const int32_t stalls_tag_ = ANDROID_SCALER_AVAILABLE_STALL_DURATIONS;
	const int32_t reprocess_formats_tag_ =
	ANDROID_SCALER_AVAILABLE_INPUT_OUTPUT_FORMATS_MAP;

	const std::vector<int32_t> valid_orientations_ = {0, 90, 180, 270};
	// TODO(b/31384253): check for required configs/reprocess formats.
	};

	TEST_F(MetadataReaderTest, FacingTranslations) {
	// Check that the enums are converting properly.
	std::map<uint8_t, int> translations{
	{ANDROID_LENS_FACING_FRONT, CAMERA_FACING_FRONT},
	{ANDROID_LENS_FACING_BACK, CAMERA_FACING_BACK},
	{ANDROID_LENS_FACING_EXTERNAL, CAMERA_FACING_EXTERNAL}};
	for (const auto& translation : translations) {
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), facing_tag_, translation.first),
	0);
	FillDUT();

	int expected = translation.second;
	int actual = expected + 1;
	EXPECT_EQ(dut_->Facing(&actual), 0);
	EXPECT_EQ(actual, expected);
	}
	}

	TEST_F(MetadataReaderTest, InvalidFacing) {
	uint8_t invalid = 99;
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), facing_tag_, invalid),
	0);
	FillDUT();
	int actual = 0;
	EXPECT_EQ(dut_->Facing(&actual), -EINVAL);
	}

	TEST_F(MetadataReaderTest, EmptyFacing) {
	FillDUT();
	int actual = 0;
	EXPECT_EQ(dut_->Facing(&actual), -ENOENT);
	}

	TEST_F(MetadataReaderTest, ValidOrientations) {
	for (int32_t orientation : valid_orientations_) {
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), orientation_tag_, orientation),
	0);
	FillDUT();

	int actual = orientation + 1;
	EXPECT_EQ(dut_->Orientation(&actual), 0);
	EXPECT_EQ(actual, orientation);
	}
	}

	TEST_F(MetadataReaderTest, InvalidOrientations) {
	// High.
	for (int32_t orientation : valid_orientations_) {
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), orientation_tag_, orientation + 1),
	0);
	FillDUT();
	int actual = 0;
	EXPECT_EQ(dut_->Orientation(&actual), -EINVAL);
	}
	// Low.
	for (int32_t orientation : valid_orientations_) {
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), orientation_tag_, orientation - 1),
	0);
	FillDUT();
	int actual = 0;
	EXPECT_EQ(dut_->Orientation(&actual), -EINVAL);
	}
	}

	TEST_F(MetadataReaderTest, EmptyOrientation) {
	FillDUT();
	int actual = 0;
	EXPECT_EQ(dut_->Orientation(&actual), -ENOENT);
	}

	TEST_F(MetadataReaderTest, MaxInputs) {
	int32_t expected = 12;
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), max_inputs_tag_, expected),
	0);
	FillDUT();
	int32_t actual = expected + 1;
	ASSERT_EQ(dut_->MaxInputStreams(&actual), 0);
	EXPECT_EQ(actual, expected);
	}

	TEST_F(MetadataReaderTest, EmptyMaxInputs) {
	FillDUT();
	// Max inputs is an optional key; if not present the default is 0.
	int32_t expected = 0;
	int32_t actual = expected + 1;
	ASSERT_EQ(dut_->MaxInputStreams(&actual), 0);
	EXPECT_EQ(actual, expected);
	}

	TEST_F(MetadataReaderTest, MaxOutputs) {
	std::array<int32_t, 3> expected = {{12, 34, 56}};
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), max_outputs_tag_, expected),
	0);
	FillDUT();
	std::array<int32_t, 3> actual;
	ASSERT_EQ(dut_->MaxOutputStreams(&actual[0], &actual[1], &actual[2]), 0);
	EXPECT_EQ(actual, expected);
	}

	TEST_F(MetadataReaderTest, InvalidMaxOutputs) {
	// Must be a 3-tuple to be valid.
	std::array<int32_t, 4> invalid = {{12, 34, 56, 78}};
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), max_outputs_tag_, invalid),
	0);
	FillDUT();
	int32_t actual;
	// Don't mind the aliasing since we don't care about the value.
	ASSERT_EQ(dut_->MaxOutputStreams(&actual, &actual, &actual), -EINVAL);
	}

	TEST_F(MetadataReaderTest, EmptyMaxOutputs) {
	FillDUT();
	int32_t actual;
	// Don't mind the aliasing since we don't care about the value.
	ASSERT_EQ(dut_->MaxOutputStreams(&actual, &actual, &actual), -ENOENT);
	}

	TEST_F(MetadataReaderTest, StreamConfigurations) {
	v4l2_camera_hal::ArrayVector<int32_t, 4> configs;
	std::array<int32_t, 4> config1{
	{1, 2, 3, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT}};
	std::array<int32_t, 4> config2{
	{5, 6, 7, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT}};
	configs.push_back(config1);
	configs.push_back(config2);
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), configs_tag_, configs),
	0);
	FillDUT();
	std::vector<StreamConfiguration> actual;
	ASSERT_EQ(dut_->StreamConfigurations(&actual), 0);
	ASSERT_EQ(actual.size(), configs.num_arrays());
	EXPECT_EQ(actual[0].spec.format, config1[0]);
	EXPECT_EQ(actual[0].spec.width, config1[1]);
	EXPECT_EQ(actual[0].spec.height, config1[2]);
	EXPECT_EQ(actual[0].direction, config1[3]);
	EXPECT_EQ(actual[1].spec.format, config2[0]);
	EXPECT_EQ(actual[1].spec.width, config2[1]);
	EXPECT_EQ(actual[1].spec.height, config2[2]);
	EXPECT_EQ(actual[1].direction, config2[3]);
	}

	TEST_F(MetadataReaderTest, InvalidStreamConfigurationDirection) {
	// -1 is not a valid direction.
	std::array<int32_t, 4> config{{1, 2, 3, -1}};
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), configs_tag_, config),
	0);
	FillDUT();
	std::vector<StreamConfiguration> actual;
	ASSERT_EQ(dut_->StreamConfigurations(&actual), -EINVAL);
	}

	TEST_F(MetadataReaderTest, InvalidStreamConfigurationSize) {
	// Both size dimensions must be > 0.
	std::array<int32_t, 4> config{
	{1, 2, 0, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT}};
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), configs_tag_, config),
	0);
	FillDUT();
	std::vector<StreamConfiguration> actual;
	ASSERT_EQ(dut_->StreamConfigurations(&actual), -EINVAL);
	}

	TEST_F(MetadataReaderTest, InvalidStreamConfigurationNumElements) {
	// Should be a multiple of 4.
	std::array<int32_t, 5> config{
	{1, 2, 3, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT, 5}};
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), configs_tag_, config),
	0);
	FillDUT();
	std::vector<StreamConfiguration> actual;
	ASSERT_EQ(dut_->StreamConfigurations(&actual), -EINVAL);
	}

	// TODO(b/31384253): Test that failure occurs if
	// required configurations are not present.

	TEST_F(MetadataReaderTest, NoStreamConfigurations) {
	FillDUT();
	std::vector<StreamConfiguration> actual;
	ASSERT_EQ(dut_->StreamConfigurations(&actual), -ENOENT);
	}

	TEST_F(MetadataReaderTest, StreamStallDurations) {
	v4l2_camera_hal::ArrayVector<int64_t, 4> stalls;
	std::array<int64_t, 4> stall1{{1, 2, 3, 4}};
	std::array<int64_t, 4> stall2{{5, 6, 7, 8}};
	stalls.push_back(stall1);
	stalls.push_back(stall2);
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), stalls_tag_, stalls), 0);
	FillDUT();
	std::vector<StreamStallDuration> actual;
	ASSERT_EQ(dut_->StreamStallDurations(&actual), 0);
	ASSERT_EQ(actual.size(), stalls.num_arrays());
	EXPECT_EQ(actual[0].spec.format, stall1[0]);
	EXPECT_EQ(actual[0].spec.width, stall1[1]);
	EXPECT_EQ(actual[0].spec.height, stall1[2]);
	EXPECT_EQ(actual[0].duration, stall1[3]);
	EXPECT_EQ(actual[1].spec.format, stall2[0]);
	EXPECT_EQ(actual[1].spec.width, stall2[1]);
	EXPECT_EQ(actual[1].spec.height, stall2[2]);
	EXPECT_EQ(actual[1].duration, stall2[3]);
	}

	TEST_F(MetadataReaderTest, InvalidStreamStallDurationDuration) {
	// -1 is not a valid duration.
	std::array<int64_t, 4> stall{{1, 2, 3, -1}};
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), stalls_tag_, stall), 0);
	FillDUT();
	std::vector<StreamStallDuration> actual;
	ASSERT_EQ(dut_->StreamStallDurations(&actual), -EINVAL);
	}

	TEST_F(MetadataReaderTest, InvalidStreamStallDurationSize) {
	// Both size dimensions must be > 0.
	std::array<int64_t, 4> stall{{1, 2, 0, 3}};
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), stalls_tag_, stall), 0);
	FillDUT();
	std::vector<StreamStallDuration> actual;
	ASSERT_EQ(dut_->StreamStallDurations(&actual), -EINVAL);
	}

	TEST_F(MetadataReaderTest, InvalidStreamStallDurationNumElements) {
	// Should be a multiple of 4.
	std::array<int64_t, 5> stall{{1, 2, 3, 4, 5}};
	ASSERT_EQ(
	v4l2_camera_hal::UpdateMetadata(metadata_.get(), stalls_tag_, stall), 0);
	FillDUT();
	std::vector<StreamStallDuration> actual;
	ASSERT_EQ(dut_->StreamStallDurations(&actual), -EINVAL);
	}

	// TODO(b/31384253): Test that failure occurs if
	// YUV_420_888, RAW10, RAW12, RAW_OPAQUE, or IMPLEMENTATION_DEFINED
	// formats have stall durations > 0.

	TEST_F(MetadataReaderTest, NoStreamStallDurations) {
	FillDUT();
	std::vector<StreamStallDuration> actual;
	ASSERT_EQ(dut_->StreamStallDurations(&actual), -ENOENT);
	}

	TEST_F(MetadataReaderTest, ReprocessFormats) {
	ReprocessFormatMap expected{{1, {4}}, {2, {5, 6}}, {3, {7, 8, 9}}};
	std::vector<int32_t> raw;
	for (const auto& input_outputs : expected) {
	raw.push_back(input_outputs.first);
	raw.push_back(input_outputs.second.size());
	raw.insert(
	raw.end(), input_outputs.second.begin(), input_outputs.second.end());
	}
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), reprocess_formats_tag_, raw),
	0);
	FillDUT();
	ReprocessFormatMap actual;
	ASSERT_EQ(dut_->ReprocessFormats(&actual), 0);
	EXPECT_EQ(actual, expected);
	}

	TEST_F(MetadataReaderTest, ReprocessFormatsNoOutputs) {
	// 0 indicates that there are 0 output formats for input format 1,
	// which is not ok.
	std::vector<int32_t> raw{1, 0};
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), reprocess_formats_tag_, raw),
	0);
	FillDUT();
	ReprocessFormatMap actual;
	ASSERT_EQ(dut_->ReprocessFormats(&actual), -EINVAL);
	}

	TEST_F(MetadataReaderTest, ReprocessFormatsPastEnd) {
	// 3 indicates that there are 3 output formats for input format 1,
	// which is not ok since there are only 2 here.
	std::vector<int32_t> raw{1, 3, 0, 0};
	ASSERT_EQ(v4l2_camera_hal::UpdateMetadata(
	metadata_.get(), reprocess_formats_tag_, raw),
	0);
	FillDUT();
	ReprocessFormatMap actual;
	ASSERT_EQ(dut_->ReprocessFormats(&actual), -EINVAL);
	}

	TEST_F(MetadataReaderTest, EmptyReprocessFormats) {
	FillDUT();
	ReprocessFormatMap actual;
	ASSERT_EQ(dut_->ReprocessFormats(&actual), -ENOENT);
	}

	} // namespace default_camera_hal