Maksim Totmin
4c34f0bedc
Streams H.264 to the Galahad II LCD via USB (gousb) with: - ffmpeg CLI transcoding (no fragile FFmpeg C-ABI bindings) - pure-Go Annex-B access-unit splitting - framerate pacing with graceful shutdown and USB reconnect - TOML config, cobra CLI, structured slog logging, unit tests
79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
package cli
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import (
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"fmt"
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"os"
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"github.com/spf13/cobra"
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"galahad2lcd/internal/config"
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"galahad2lcd/internal/service"
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)
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func newSetCmd() *cobra.Command {
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var (
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configPath string
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input string
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rotate int
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speed float64
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fps float64
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noRestart bool
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)
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cmd := &cobra.Command{
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Use: "set",
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Short: "Update display settings and restart the service",
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Long: `Update the galahad2lcd configuration file and restart the systemd
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service. Provide at least one flag to change a setting. Writing the default
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configuration path requires root.`,
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Args: cobra.NoArgs,
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RunE: func(cmd *cobra.Command, _ []string) error {
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if !cmd.Flags().Changed("input") &&
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!cmd.Flags().Changed("rotate") &&
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!cmd.Flags().Changed("speed") &&
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!cmd.Flags().Changed("fps") {
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return fmt.Errorf("nothing to set; provide at least one of --input, --rotate, --speed, --fps")
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}
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cfg, err := config.Load(configPath)
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if err != nil {
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return err
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}
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if err := applyOverrides(cmd, &cfg, input, rotate, speed, fps); err != nil {
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return err
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}
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if err := cfg.Validate(); err != nil {
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return fmt.Errorf("invalid configuration: %w", err)
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}
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if configPath == config.DefaultConfigPath && os.Geteuid() != 0 {
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return fmt.Errorf("writing %s requires root (run with sudo)", configPath)
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}
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if err := cfg.Save(configPath); err != nil {
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return err
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}
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fmt.Printf("configuration saved to %s\n", configPath)
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if noRestart {
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return nil
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}
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ctx, stop := newSignalContext()
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defer stop()
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if err := service.New(config.ServiceName).Restart(ctx); err != nil {
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return err
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}
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fmt.Println("service restarted")
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return nil
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},
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}
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cmd.Flags().StringVar(&configPath, "config", config.DefaultConfigPath, "path to the configuration file")
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cmd.Flags().StringVar(&input, "input", "", "path to the media file")
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cmd.Flags().IntVar(&rotate, "rotate", 0, "rotation in degrees (0, 90, 180, 270)")
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cmd.Flags().Float64Var(&speed, "speed", 0, "playback speed (>1 slower, <1 faster)")
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cmd.Flags().Float64Var(&fps, "fps", 0, "output framerate (0 = auto)")
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cmd.Flags().BoolVar(&noRestart, "no-restart", false, "do not restart the service after saving")
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return cmd
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}
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