залил

internal/audio/audio.go

@@ -0,0 +1,78 @@
+package audio
+
+import (
+	"math"
+	"os"
+	"stream-bot/internal/logger"
+
+	"github.com/faiface/beep"
+	"github.com/faiface/beep/effects"
+	"github.com/faiface/beep/mp3"
+	"github.com/faiface/beep/speaker"
+	"github.com/faiface/beep/wav"
+)
+
+var initialized bool
+
+func Init() error {
+	// Увеличенный буфер (было 200, стало 4096) для плавности
+	err := speaker.Init(44100, 4096)
+	if err == nil {
+		initialized = true
+	}
+	return err
+}
+
+func Close() {
+	if initialized {
+		speaker.Close()
+	}
+}
+
+func PlaySound(filePath string) error {
+	return PlayWithVolume(filePath, 100)
+}
+
+func PlayWithVolume(filePath string, volume int) error {
+	if !initialized {
+		logger.Warn("Audio player not initialized, cannot play %s", filePath)
+		return nil
+	}
+	if volume <= 0 {
+		return nil
+	}
+	if volume > 100 {
+		volume = 100
+	}
+
+	f, err := os.Open(filePath)
+	if err != nil {
+		return err
+	}
+
+	var streamer beep.StreamSeekCloser
+	var errDecode error
+	if len(filePath) > 4 && filePath[len(filePath)-4:] == ".mp3" {
+		streamer, _, errDecode = mp3.Decode(f)
+	} else {
+		streamer, _, errDecode = wav.Decode(f)
+	}
+	if errDecode != nil {
+		_ = f.Close()
+		return errDecode
+	}
+
+	gain := 20 * math.Log10(float64(volume)/100.0)
+	volumeStreamer := &effects.Volume{
+		Streamer: streamer,
+		Base:     2,
+		Volume:   gain,
+		Silent:   false,
+	}
+
+	speaker.Play(beep.Seq(volumeStreamer, beep.Callback(func() {
+		_ = streamer.Close()
+		_ = f.Close()
+	})))
+	return nil
+}