new_util/get_sound_duration

ovos_utils/sound.py

@@ -1,6 +1,10 @@
 import os
 import subprocess
+import wave
 from copy import deepcopy
+from os.path import isfile
+from typing import Optional
+
 from distutils.spawn import find_executable
 
 from ovos_utils.log import LOG
@@ -115,3 +119,36 @@ def play_audio(uri, play_cmd=None, environment=None):
         LOG.error(f"Failed to play: {play_cmd}")
         LOG.exception(e)
         return None
+
+
+def get_sound_duration(path: str, base_dir: Optional[str] = "") -> float:
+    """return sound duration, in seconds"""
+    if base_dir and path.startswith("snd/"):
+        resolved_path = f"{base_dir}/{path}"
+        if isfile(resolved_path):
+            path = resolved_path
+
+    if not isfile(path):
+        raise FileNotFoundError(f"could not resolve sound file: {path}")
+
+    if path.endswith(".wav"):
+        with wave.open(path, 'r') as f:
+            frames = f.getnframes()
+            rate = f.getframerate()
+        return frames / float(rate)
+    media_info = find_executable("mediainfo")
+    if media_info:
+        args = (media_info, path)
+        popen = subprocess.Popen(args, stdout=subprocess.PIPE)
+        popen.wait()
+        output = popen.stdout.read().decode("utf-8").split("Duration")[1].split("\n")[0]
+        output = "".join([c for c in output if c.isdigit()])
+        return int(output) / 1000
+    ffprobe = find_executable("ffprobe")
+    if ffprobe:
+        args = (ffprobe, "-show_entries", "format=duration", "-i", path)
+        popen = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        popen.wait()
+        output = popen.stdout.read().decode("utf-8")
+        return float(output.split("duration=")[-1].split("\n")[0])
+    raise RuntimeError("Failed to determine sound length, please install mediainfo or ffprobe")