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package soundbox
import (
"context"
"fmt"
"os/exec"
"net"
)
// streamingPort is the default network port a soundbox is listening to for
// incoming audio stream data.
const streamingPort = 5316
// StreamURLContext streams audio from a given URL to one or multiple soundbox
// devices. The devices are referenced via their MAC addresses given by the
// targets argument. The ctx argument is passed to cancel the streaming.
func StreamURLContext(ctx context.Context, url string, targets []net.HardwareAddr) error {
iface, err := getInterface()
if err != nil {
return err
}
cmd := []string{
"-re",
"-i",
url,
}
for _, target := range targets {
ip, err := toLinkLocal(target)
if err != nil {
return err
}
cmd = append(cmd, "-acodec")
cmd = append(cmd, "flac")
cmd = append(cmd, "-f")
cmd = append(cmd, "ogg")
cmd = append(cmd, fmt.Sprintf(
"tcp://[%s%%%s]:%d",
ip,
iface.Name,
streamingPort,
))
}
return exec.CommandContext(ctx, "ffmpeg", cmd...).Run()
}
|
