136 lines
4.4 KiB
C++
136 lines
4.4 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/packet.h"
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#include "absl/strings/str_cat.h"
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#include "mediapipe/framework/port.h"
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#include "mediapipe/framework/port/canonical_errors.h"
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#include "mediapipe/framework/port/integral_types.h"
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#include "mediapipe/framework/port/ret_check.h"
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#include "mediapipe/framework/port/status.h"
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#include "mediapipe/framework/port/status_builder.h"
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namespace mediapipe {
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namespace packet_internal {
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HolderBase::~HolderBase() {}
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Packet Create(HolderBase* holder) {
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Packet result;
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result.holder_.reset(holder);
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return result;
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}
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Packet Create(HolderBase* holder, Timestamp timestamp) {
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Packet result;
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result.holder_.reset(holder);
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result.timestamp_ = timestamp;
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return result;
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}
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const HolderBase* GetHolder(const Packet& packet) {
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return packet.holder_.get();
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}
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} // namespace packet_internal
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Packet Packet::At(class Timestamp timestamp) const& {
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Packet result(*this);
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result.timestamp_ = timestamp;
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return result;
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}
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Packet Packet::At(class Timestamp timestamp) && {
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timestamp_ = timestamp;
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// Note: Below object is of type Packet&& which doesn't match return type
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// of Packet, so a new Packet will be created by move constructor here.
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// Moving everything to a new Packet is done intentionally to preserve the
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// immutability of Timestamps.
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return std::move(*this);
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}
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std::string Packet::RegisteredTypeName() const {
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if (IsEmpty()) {
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return "";
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}
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return holder_->RegisteredTypeName();
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}
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std::string Packet::DebugTypeName() const {
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if (IsEmpty()) {
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return "{empty}";
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}
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return holder_->DebugTypeName();
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}
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std::string Packet::DebugString() const {
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std::string result = absl::StrCat("mediapipe::Packet with timestamp: ",
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timestamp_.DebugString());
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if (IsEmpty()) {
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absl::StrAppend(&result, " and no data");
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} else {
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absl::StrAppend(&result, " and type: ", holder_->DebugTypeName());
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}
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return result;
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}
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::mediapipe::Status Packet::ValidateAsProtoMessageLite() const {
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if (ABSL_PREDICT_FALSE(IsEmpty())) {
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return ::mediapipe::InternalError("Packet is empty.");
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}
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if (ABSL_PREDICT_FALSE(holder_->GetProtoMessageLite() == nullptr)) {
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return ::mediapipe::InvalidArgumentError(
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absl::StrCat("The Packet stores \"", holder_->DebugTypeName(), "\"",
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"which is not convertible to proto_ns::MessageLite."));
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} else {
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return ::mediapipe::OkStatus();
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}
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}
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const proto_ns::MessageLite& Packet::GetProtoMessageLite() const {
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CHECK(holder_ != nullptr) << "The packet is empty.";
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const proto_ns::MessageLite* proto = holder_->GetProtoMessageLite();
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CHECK(proto != nullptr) << "The Packet stores '" << holder_->DebugTypeName()
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<< "', it cannot be converted to MessageLite type.";
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return *proto;
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}
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StatusOr<std::vector<const proto_ns::MessageLite*>>
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Packet::GetVectorOfProtoMessageLitePtrs() {
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if (holder_ == nullptr) {
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return ::mediapipe::InternalError("Packet is empty.");
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}
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return holder_->GetVectorOfProtoMessageLite();
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}
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MEDIAPIPE_REGISTER_TYPE(::mediapipe::Packet, "::mediapipe::Packet", nullptr,
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nullptr);
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MEDIAPIPE_REGISTER_TYPE(::std::vector<::mediapipe::Packet>,
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"::std::vector<::mediapipe::Packet>", nullptr, nullptr);
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MEDIAPIPE_REGISTER_TYPE(::mediapipe::Timestamp, "::mediapipe::Timestamp",
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nullptr, nullptr);
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#define PACKET_PAIR_TYPE ::std::pair<::mediapipe::Packet, ::mediapipe::Packet>
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MEDIAPIPE_REGISTER_TYPE(PACKET_PAIR_TYPE,
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"::std::pair<::mediapipe::Packet,::mediapipe::Packet>",
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nullptr, nullptr);
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#undef PACKET_PAIR_TYPE
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#define PACKET_MAP_TYPE ::std::map<std::string, ::mediapipe::Packet>
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MEDIAPIPE_REGISTER_TYPE(PACKET_MAP_TYPE,
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"::std::map<std::string,::mediapipe::Packet>", nullptr,
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nullptr);
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#undef PACKET_MAP_TYPE
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} // namespace mediapipe
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