Artemis-N3DS: Streaming within a dual-screen client

flowchart LR

subgraph group_host["Hosts and pairing"]
  node_discovery["Host discovery<br/>[host_discovery.cpp]"]
  node_pairing[("Pair records<br/>[pair_record.cpp]")]
  node_gamestream["GameStream client<br/>[client.c]"]
  node_xml["Protocol XML<br/>[xml.c]"]
end

subgraph group_session["Session coordination"]
  node_main["Application flow<br/>[n3ds_main.cpp]"]
  node_ui["Console menus<br/>[n3ds_ui.cpp]"]
  node_connection["Stream connection"]
  node_dispatcher["Message dispatcher<br/>[dispatcher.cpp]"]
end

subgraph group_stream["Stream pipeline"]
  node_presentation["Presentation state"]
  node_decoder["Video decoders"]
  node_mvd["Hardware decode<br/>[n3ds_video_mvd.cpp]"]
  node_software["Software decode"]
  node_renderer["Screen renderers"]
  node_graphics["Graphics lifecycle"]
  node_audio["Audio output<br/>[n3ds_audio.cpp]"]
end

subgraph group_interaction["Input and helpers"]
  node_input["Console input<br/>[n3ds_input.cpp]"]
  node_touch["Touch handlers<br/>[TouchHandler.hpp]"]
  node_menuhub["In-stream helper hub"]
  node_bottomui["Bottom-screen UI"]
end

subgraph group_state["Settings and telemetry"]
  node_config[("Configuration<br/>[config.cpp]")]
  node_appcache[("App list cache<br/>[app_list_cache.cpp]")]
  node_profiles["Stream profiles<br/>[stream_profile.cpp]"]
  node_telemetry[("Stream telemetry")]
  node_benchmark["Performance metrics"]
end

node_user(("3DS user"))

node_user -->|"uses"| node_main
node_main -->|"finds hosts"| node_discovery
node_main -->|"pairs host"| node_pairing
node_main -.->|"manages host"| node_gamestream
node_gamestream -->|"parses responses"| node_xml
node_discovery -->|"uses records"| node_pairing
node_main -->|"shows menus"| node_ui
node_main -->|"lists apps"| node_appcache
node_main -->|"starts session"| node_connection
node_main -->|"loads settings"| node_config
node_main -->|"selects profile"| node_profiles
node_main -->|"handles controls"| node_input
node_input -->|"posts events"| node_dispatcher
node_input -->|"owns handlers"| node_touch
node_main -->|"dispatches events"| node_dispatcher
node_user -->|"opens helpers"| node_menuhub
node_menuhub -->|"posts actions"| node_dispatcher
node_menuhub -.->|"draws interface"| node_bottomui
node_user -->|"chooses stream"| node_connection
node_connection -.->|"receives video"| node_decoder
node_decoder -.->|"hardware path"| node_mvd
node_decoder -.->|"software path"| node_software
node_decoder -->|"renders frames"| node_renderer
node_renderer -->|"uses layout state"| node_presentation
node_renderer -->|"uses graphics lifecycle"| node_graphics
node_connection -.->|"streams audio"| node_audio
node_user -->|"views or saves metrics"| node_telemetry
node_user -->|"views performance"| node_benchmark
node_main -->|"uses telemetry store"| node_telemetry


class node_discovery,node_pairing,node_gamestream,node_xml,node_user toneBlue
class node_main,node_ui,node_connection,node_dispatcher toneAmber
class node_presentation,node_decoder,node_mvd,node_software,node_renderer,node_graphics,node_audio toneMint
class node_input,node_touch,node_menuhub,node_bottomui toneRose
class node_config,node_appcache,node_profiles,node_telemetry,node_benchmark toneIndigo