68 lines
2.9 KiB
C++
68 lines
2.9 KiB
C++
// Copyright 2019 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef MEDIAPIPE_FRAMEWORK_TEST_UTIL_H_
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#define MEDIAPIPE_FRAMEWORK_TEST_UTIL_H_
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#include "mediapipe/framework/calculator.pb.h"
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#include "mediapipe/framework/formats/image_frame.h"
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namespace mediapipe {
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using mediapipe::CalculatorGraphConfig;
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// Checks if two image frames are equal within the specified tolerance.
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// image1 and image2 may be of different-but-compatible image formats (e.g.,
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// SRGB and SRGBA); in that case, only the channels available in both are
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// compared.
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// max_color_diff applies to the first 3 channels; i.e., R, G, B for sRGB and
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// sRGBA, and the single gray channel for GRAY8 and GRAY16. It is the maximum
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// pixel color value difference allowed; i.e., a value from 0 to 2^8-1 for 8-bit
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// data and a value from 0 to 2^16-1 for 16-bit data.
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// max_alpha_diff applies to the 4th (alpha) channel only, if present.
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// max_avg_diff applies to all channels, normalized across all pixels.
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//
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// Note: Although max_color_diff and max_alpha_diff are floats, all uint8/uint16
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// values are exactly representable. (2^24 + 1 is the first non-representable
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// positive integral value.)
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bool CompareImageFrames(const ImageFrame& image1, const ImageFrame& image2,
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const float max_color_diff, const float max_alpha_diff,
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const float max_avg_diff = 1.0,
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std::string* error_message = nullptr);
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// Returns the absolute path to the directory that contains test source code.
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std::string GetTestRootDir();
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// Returns the absolute path to the contents of the package's "testdata"
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// directory.
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// This handles the different paths where test data ends up when using
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// ion_cc_test on various platforms.
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std::string GetTestDataDir(const std::string& package_base_path);
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// Loads a binary graph from path. Returns true iff successful.
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bool LoadTestGraph(CalculatorGraphConfig* proto, const std::string& path);
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// Loads a PNG image from path using the given ImageFormat. Returns nullptr in
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// case of failure.
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std::unique_ptr<ImageFrame> LoadTestPng(
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const std::string& path, ImageFormat::Format format = ImageFormat::SRGBA);
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// Returns the luminance image of |original_image|.
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// The format of |original_image| must be sRGB or sRGBA.
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std::unique_ptr<ImageFrame> GenerateLuminanceImage(
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const ImageFrame& original_image);
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} // namespace mediapipe
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#endif // MEDIAPIPE_FRAMEWORK_TEST_UTIL_H_
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