85 lines
3.0 KiB
C++
85 lines
3.0 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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#ifndef MEDIAPIPE_FRAMEWORK_TOOL_OPTIONS_UTIL_H_
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#define MEDIAPIPE_FRAMEWORK_TOOL_OPTIONS_UTIL_H_
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#include "mediapipe/framework/calculator.pb.h"
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#include "mediapipe/framework/input_stream_shard.h"
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#include "mediapipe/framework/packet.h"
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#include "mediapipe/framework/packet_set.h"
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#include "mediapipe/framework/port/any_proto.h"
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#include "mediapipe/framework/tool/options_map.h"
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#include "mediapipe/framework/tool/type_util.h"
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namespace mediapipe {
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namespace tool {
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// Combine a base options with an overriding options.
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template <typename T>
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inline T MergeOptions(const T& base, const T& options) {
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auto result = base;
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result.MergeFrom(options);
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return result;
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}
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// Combine a base options message with an optional side packet. The specified
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// packet can hold either the specified options type T or CalculatorOptions.
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// Fields are either replaced or merged depending on field merge_fields.
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template <typename T>
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inline T RetrieveOptions(const T& base, const Packet& options_packet) {
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if (!options_packet.IsEmpty()) {
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T packet_options;
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if (options_packet.ValidateAsType<T>().ok()) {
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packet_options = options_packet.Get<T>();
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} else if (options_packet.ValidateAsType<CalculatorOptions>().ok()) {
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GetExtension<T>(options_packet.Get<CalculatorOptions>(), &packet_options);
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}
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return tool::MergeOptions(base, packet_options);
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}
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return base;
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}
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// Combine a base options message with an optional side packet from
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// a PacketSet such as a calculator's input-side-packets.
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template <typename T>
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inline T RetrieveOptions(const T& base, const PacketSet& packet_set,
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const std::string& tag_name = "OPTIONS") {
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if (packet_set.HasTag(tag_name)) {
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return tool::RetrieveOptions(base, packet_set.Tag(tag_name));
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}
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return base;
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}
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// Combine a base options message with an optional input packet from
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// an InputStreamShardSet such as a calculator's input streams.
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template <typename T>
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inline T RetrieveOptions(const T& base, const InputStreamShardSet& stream_set,
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const std::string& tag_name = "OPTIONS") {
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if (stream_set.HasTag(tag_name)) {
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Packet options_packet = stream_set.Tag(tag_name).Value();
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return tool::RetrieveOptions(base, options_packet);
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}
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return base;
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}
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// Finds the descriptor for a protobuf.
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const proto_ns::Descriptor* GetProtobufDescriptor(const std::string& type_name);
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} // namespace tool
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} // namespace mediapipe
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#endif // MEDIAPIPE_FRAMEWORK_TOOL_OPTIONS_UTIL_H_
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