Document proper way to set services.
PiperOrigin-RevId: 513955214
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@ -383,6 +383,12 @@ class CalculatorGraph {
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absl::Status SetGpuResources(std::shared_ptr<GpuResources> resources);
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#endif // !MEDIAPIPE_DISABLE_GPU
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// Sets a service object, essentially a graph-level singleton, which can be
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// accessed by calculators and subgraphs without requiring an explicit
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// connection.
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//
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// NOTE: must be called before `Initialize`, so subgraphs can access services
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// as well, as graph expansion happens during initialization.
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template <typename T>
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absl::Status SetServiceObject(const GraphService<T>& service,
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std::shared_ptr<T> object) {
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@ -395,6 +401,13 @@ class CalculatorGraph {
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return service_manager_.GetServiceObject(service);
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}
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// Sets a service object, essentially a graph-level singleton, which can be
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// accessed by calculators and subgraphs without requiring an explicit
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// connection.
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//
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// NOTE: must be called before `Initialize`, so subgraphs can access services
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// as well, as graph expansion happens during initialization.
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//
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// Only the Java API should call this directly.
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absl::Status SetServicePacket(const GraphServiceBase& service, Packet p) {
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// TODO: check that the graph has not been started!
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