106 lines
3.7 KiB
C++
106 lines
3.7 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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#include "mediapipe/framework/calculator_context.h"
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#include "mediapipe/framework/calculator_framework.h"
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#include "mediapipe/framework/port/canonical_errors.h"
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#include "mediapipe/framework/port/gmock.h"
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#include "mediapipe/framework/port/gtest.h"
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#include "mediapipe/framework/port/logging.h"
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#include "mediapipe/framework/port/parse_text_proto.h"
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#include "mediapipe/framework/port/status.h"
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#include "mediapipe/framework/port/status_matchers.h"
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#include "mediapipe/framework/timestamp.h"
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namespace mediapipe {
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namespace {
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class CustomBoundCalculator : public CalculatorBase {
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public:
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static ::mediapipe::Status GetContract(CalculatorContract* cc) {
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cc->Inputs().Index(0).Set<int>();
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cc->Outputs().Index(0).Set<int>();
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return ::mediapipe::OkStatus();
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}
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::mediapipe::Status Open(CalculatorContext* cc) final {
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return ::mediapipe::OkStatus();
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}
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::mediapipe::Status Process(CalculatorContext* cc) final {
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cc->Outputs().Index(0).SetNextTimestampBound(cc->InputTimestamp() + 1);
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return ::mediapipe::OkStatus();
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}
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};
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REGISTER_CALCULATOR(CustomBoundCalculator);
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// Shows that ImmediateInputStreamHandler allows bounds propagation.
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TEST(CalculatorGraphBounds, ImmediateHandlerBounds) {
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// CustomBoundCalculator produces only timestamp bounds.
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// The first PassThroughCalculator propagates bounds using SetOffset(0).
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// The second PassthroughCalculator delivers an output packet whenever the
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// first PassThroughCalculator delivers a timestamp bound.
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CalculatorGraphConfig config =
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::mediapipe::ParseTextProtoOrDie<CalculatorGraphConfig>(R"(
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input_stream: 'input'
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node {
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calculator: 'CustomBoundCalculator'
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input_stream: 'input'
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output_stream: 'bounds'
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}
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node {
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calculator: 'PassThroughCalculator'
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input_stream: 'bounds'
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output_stream: 'bounds_2'
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input_stream_handler {
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input_stream_handler: "ImmediateInputStreamHandler"
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}
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}
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node {
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calculator: 'PassThroughCalculator'
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input_stream: 'bounds_2'
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input_stream: 'input'
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output_stream: 'bounds_output'
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output_stream: 'output'
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}
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)");
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CalculatorGraph graph;
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std::vector<Packet> output_packets;
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MEDIAPIPE_ASSERT_OK(graph.Initialize(config));
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MEDIAPIPE_ASSERT_OK(graph.ObserveOutputStream("output", [&](const Packet& p) {
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output_packets.push_back(p);
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return ::mediapipe::OkStatus();
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}));
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MEDIAPIPE_ASSERT_OK(graph.StartRun({}));
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MEDIAPIPE_ASSERT_OK(graph.WaitUntilIdle());
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// Add four packets into the graph.
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for (int i = 0; i < 4; ++i) {
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Packet p = MakePacket<int>(33).At(Timestamp(i));
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MEDIAPIPE_ASSERT_OK(graph.AddPacketToInputStream("input", p));
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}
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// Four packets arrive at the output only if timestamp bounds are propagated.
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MEDIAPIPE_ASSERT_OK(graph.WaitUntilIdle());
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EXPECT_EQ(output_packets.size(), 4);
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// Eventually four packets arrive.
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MEDIAPIPE_ASSERT_OK(graph.CloseAllPacketSources());
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MEDIAPIPE_ASSERT_OK(graph.WaitUntilDone());
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EXPECT_EQ(output_packets.size(), 4);
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}
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} // namespace
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} // namespace mediapipe
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