90 lines
3.3 KiB
C++
90 lines
3.3 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/input_side_packet_handler.h"
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#include "mediapipe/framework/port/logging.h"
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#include "mediapipe/framework/port/ret_check.h"
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#include "mediapipe/framework/port/status_builder.h"
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#include "mediapipe/framework/tool/fill_packet_set.h"
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namespace mediapipe {
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absl::Status InputSidePacketHandler::PrepareForRun(
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const PacketTypeSet* input_side_packet_types,
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const std::map<std::string, Packet>& all_side_packets,
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std::function<void()> input_side_packets_ready_callback,
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std::function<void(absl::Status)> error_callback) {
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int missing_input_side_packet_count;
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prev_input_side_packets_ = std::move(input_side_packets_);
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ASSIGN_OR_RETURN(
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input_side_packets_,
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tool::FillPacketSet(*input_side_packet_types, all_side_packets,
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&missing_input_side_packet_count));
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input_side_packet_types_ = input_side_packet_types;
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missing_input_side_packet_count_.store(missing_input_side_packet_count,
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std::memory_order_relaxed);
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input_side_packets_ready_callback_ =
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std::move(input_side_packets_ready_callback);
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error_callback_ = std::move(error_callback);
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return absl::OkStatus();
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}
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bool InputSidePacketHandler::InputSidePacketsChanged() {
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return prev_input_side_packets_ == nullptr ||
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input_side_packets_ == nullptr ||
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*input_side_packets_ != *prev_input_side_packets_;
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}
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void InputSidePacketHandler::Set(CollectionItemId id, const Packet& packet) {
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absl::Status status = SetInternal(id, packet);
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if (!status.ok()) {
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TriggerErrorCallback(status);
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}
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}
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absl::Status InputSidePacketHandler::SetInternal(CollectionItemId id,
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const Packet& packet) {
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RET_CHECK_GT(missing_input_side_packet_count_, 0);
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Packet& side_packet = input_side_packets_->Get(id);
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if (!side_packet.IsEmpty()) {
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return mediapipe::AlreadyExistsErrorBuilder(MEDIAPIPE_LOC)
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<< "Input side packet with id " << id << " was already set.";
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}
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absl::Status result = input_side_packet_types_->Get(id).Validate(packet);
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if (!result.ok()) {
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return mediapipe::StatusBuilder(result, MEDIAPIPE_LOC).SetPrepend()
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<< absl::StrCat(
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"Packet type mismatch on calculator input side packet with "
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"id ",
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id.value(), ": ");
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}
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side_packet = packet;
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if (missing_input_side_packet_count_.fetch_sub(
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1, std::memory_order_acq_rel) == 1) {
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input_side_packets_ready_callback_();
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}
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return absl::OkStatus();
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}
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void InputSidePacketHandler::TriggerErrorCallback(
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const absl::Status& status) const {
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CHECK(error_callback_);
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error_callback_(status);
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}
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} // namespace mediapipe
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