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import os
import json
import base64
import requests
def wav_to_base64_url(wav_path):
with open(wav_path, "rb") as f:
b64_audio = base64.b64encode(f.read()).decode()
return f"data:audio/wav;base64,{b64_audio}"
def is_api_available(api_url):
try:
response = requests.get(api_url)
return response.status_code < 500
except Exception as e:
print("[Error] Cannot reach API:", e)
return False
def annotate_mispronunciation(session_id, api_url="http://localhost:8080", base_dir="session_data"):
json_path = os.path.join(base_dir, session_id, f"{session_id}_transcriptionCW.json")
if not os.path.exists(json_path):
print(f"[Error] File not found: {json_path}")
return
if not is_api_available(api_url):
print(f"[Error] API not available at {api_url}")
return
with open(json_path, "r", encoding="utf-8") as f:
data = json.load(f)
segments = data.get("segments", [])
for segment in segments:
start = segment["start"]
end = segment["end"]
speaker = segment["speaker"]
filename = f"{session_id}-{start:.2f}-{end:.2f}-{speaker}.wav"
filepath = os.path.join(base_dir, session_id, filename)
if not os.path.exists(filepath):
print(f"[Warning] Audio file missing: {filename}")
continue
audio_url = wav_to_base64_url(filepath)
try:
resp = requests.post(
f"{api_url}/vocallens/api/analyze",
headers={"Content-Type": "application/json"},
data=json.dumps([audio_url])
)
if resp.status_code == 200:
result = resp.json()
segment["mispronunciation"] = result.get("ce", "")
else:
print(f"[Warning] API error {resp.status_code} for {filename}")
segment["mispronunciation"] = ""
except Exception as e:
print(f"[Error] Exception during API call for {filename}:", e)
segment["mispronunciation"] = ""
with open(json_path, "w", encoding="utf-8") as f:
json.dump(data, f, indent=4, ensure_ascii=False)
print(f"Session {session_id} mispronunciation annotation done: {json_path}")
return data
if __name__ == "__main__":
annotate_mispronunciation("000030")
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