Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
MediaPipe Team Project import generated by Copybara. 2946872 Aug 17, 2019
0 contributors

Users who have contributed to this file

87 lines (75 sloc) 3.07 KB
// Copyright 2019 The MediaPipe Authors.
//
// 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 "mediapipe/framework/calculator_framework.h"
#include "mediapipe/framework/formats/image_frame.h"
#include "mediapipe/framework/port/status.h"
#include "mediapipe/gpu/gl_calculator_helper.h"
#ifdef __APPLE__
#include "mediapipe/objc/util.h"
#endif
namespace mediapipe {
// Convert ImageFrame to GpuBuffer.
class ImageFrameToGpuBufferCalculator : public CalculatorBase {
public:
ImageFrameToGpuBufferCalculator() {}
static ::mediapipe::Status GetContract(CalculatorContract* cc);
::mediapipe::Status Open(CalculatorContext* cc) override;
::mediapipe::Status Process(CalculatorContext* cc) override;
private:
#if !MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
GlCalculatorHelper helper_;
#endif // !MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
};
REGISTER_CALCULATOR(ImageFrameToGpuBufferCalculator);
// static
::mediapipe::Status ImageFrameToGpuBufferCalculator::GetContract(
CalculatorContract* cc) {
cc->Inputs().Index(0).Set<ImageFrame>();
cc->Outputs().Index(0).Set<GpuBuffer>();
// Note: we call this method even on platforms where we don't use the helper,
// to ensure the calculator's contract is the same. In particular, the helper
// enables support for the legacy side packet, which several graphs still use.
RETURN_IF_ERROR(GlCalculatorHelper::UpdateContract(cc));
return ::mediapipe::OkStatus();
}
::mediapipe::Status ImageFrameToGpuBufferCalculator::Open(
CalculatorContext* cc) {
// Inform the framework that we always output at the same timestamp
// as we receive a packet at.
cc->SetOffset(TimestampDiff(0));
#if !MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
RETURN_IF_ERROR(helper_.Open(cc));
#endif // !MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
return ::mediapipe::OkStatus();
}
::mediapipe::Status ImageFrameToGpuBufferCalculator::Process(
CalculatorContext* cc) {
#if MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
CFHolder<CVPixelBufferRef> buffer;
RETURN_IF_ERROR(CreateCVPixelBufferForImageFramePacket(
cc->Inputs().Index(0).Value(), &buffer));
cc->Outputs().Index(0).Add(new GpuBuffer(buffer), cc->InputTimestamp());
#else
const auto& input = cc->Inputs().Index(0).Get<ImageFrame>();
helper_.RunInGlContext([this, &input, &cc]() {
auto src = helper_.CreateSourceTexture(input);
auto output = src.GetFrame<GpuBuffer>();
glFlush();
cc->Outputs().Index(0).Add(output.release(), cc->InputTimestamp());
src.Release();
});
#endif // MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
return ::mediapipe::OkStatus();
}
} // namespace mediapipe
You can’t perform that action at this time.