From 79eeb90079e417f0a9d040c1de8f3278c628810f Mon Sep 17 00:00:00 2001
From: xegineering <me@xegineering.eu>
Date: Thu, 31 Oct 2024 22:10:36 +0100
Subject: Change module name and restructure content

The repository names for soundbox are named as below:

- app: soundbox-app
- Go library module: soundbox-go
- Device: soundbox

The Go module names were:

- app: xengineering.eu/soundbox/app
- Go library module: xengineering.eu/soundbox

This does not make clear which module is related to which repository
since the names are different. Thus it should be changed to:

- app: xengineering.eu/soundbox-app
- Go library module: xengineering.eu/soundbox-go

The import statement for the library is then:

    import "xengineering.eu/soundbox-go/soundbox"

This is a bit longer but it keeps the property that the library is
referenced inside the code by the simple name `soundbox`.
---
 soundbox/stream.go | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 soundbox/stream.go

(limited to 'soundbox/stream.go')

diff --git a/soundbox/stream.go b/soundbox/stream.go
new file mode 100644
index 0000000..cc8fcea
--- /dev/null
+++ b/soundbox/stream.go
@@ -0,0 +1,48 @@
+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()
+}
-- 
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