97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
// Copyright 2021 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_CALCULATORS_IMAGE_WARP_AFFINE_CALCULATOR_H_
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#define MEDIAPIPE_CALCULATORS_IMAGE_WARP_AFFINE_CALCULATOR_H_
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#include "mediapipe/framework/api2/node.h"
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#include "mediapipe/framework/api2/port.h"
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#include "mediapipe/framework/formats/image.h"
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#include "mediapipe/framework/formats/image_frame.h"
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#if !MEDIAPIPE_DISABLE_GPU
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#include "mediapipe/gpu/gpu_buffer.h"
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#endif // !MEDIAPIPE_DISABLE_GPU
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namespace mediapipe {
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// Runs affine transformation.
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//
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// Input:
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// IMAGE - Image/ImageFrame/GpuBuffer
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//
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// MATRIX - std::array<float, 16>
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// Used as following:
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// output(x, y) = input(matrix[0] * x + matrix[1] * y + matrix[3],
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// matrix[4] * x + matrix[5] * y + matrix[7])
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// where x and y ranges are defined by @OUTPUT_SIZE.
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//
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// OUTPUT_SIZE - std::pair<int, int>
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// Size of the output image.
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//
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// Output:
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// IMAGE - Image/ImageFrame/GpuBuffer
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//
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// Note:
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// - Output image type and format are the same as the input one.
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//
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// Usage example:
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// node {
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// calculator: "WarpAffineCalculator(Cpu|Gpu)"
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// input_stream: "IMAGE:image"
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// input_stream: "MATRIX:matrix"
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// input_stream: "OUTPUT_SIZE:size"
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// output_stream: "IMAGE:transformed_image"
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// options: {
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// [mediapipe.WarpAffineCalculatorOptions.ext] {
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// border_mode: BORDER_ZERO
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// }
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// }
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// }
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template <typename ImageT>
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class WarpAffineCalculatorIntf : public mediapipe::api2::NodeIntf {
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public:
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static constexpr mediapipe::api2::Input<ImageT> kInImage{"IMAGE"};
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static constexpr mediapipe::api2::Input<std::array<float, 16>> kMatrix{
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"MATRIX"};
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static constexpr mediapipe::api2::Input<std::pair<int, int>> kOutputSize{
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"OUTPUT_SIZE"};
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static constexpr mediapipe::api2::Output<ImageT> kOutImage{"IMAGE"};
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};
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#if !MEDIAPIPE_DISABLE_OPENCV
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class WarpAffineCalculatorCpu : public WarpAffineCalculatorIntf<ImageFrame> {
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public:
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MEDIAPIPE_NODE_INTERFACE(WarpAffineCalculatorCpu, kInImage, kMatrix,
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kOutputSize, kOutImage);
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};
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#endif // !MEDIAPIPE_DISABLE_OPENCV
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#if !MEDIAPIPE_DISABLE_GPU
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class WarpAffineCalculatorGpu
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: public WarpAffineCalculatorIntf<mediapipe::GpuBuffer> {
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public:
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MEDIAPIPE_NODE_INTERFACE(WarpAffineCalculatorGpu, kInImage, kMatrix,
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kOutputSize, kOutImage);
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};
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#endif // !MEDIAPIPE_DISABLE_GPU
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class WarpAffineCalculator : public WarpAffineCalculatorIntf<mediapipe::Image> {
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public:
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MEDIAPIPE_NODE_INTERFACE(WarpAffineCalculator, kInImage, kMatrix, kOutputSize,
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kOutImage);
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};
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} // namespace mediapipe
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#endif // MEDIAPIPE_CALCULATORS_IMAGE_WARP_AFFINE_CALCULATOR_H_
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