fix(webui): crash on non-ffmpeg env. (#466)

examples/cmd/run.py

@@ -12,23 +12,17 @@ from io import BytesIO
 
 import ChatTTS
 
-from tools.audio import unsafe_float_to_int16, wav2
+from tools.audio import wav_arr_to_mp3_view
 from tools.logger import get_logger
 
 logger = get_logger("Command")
 
 
 def save_mp3_file(wav, index):
-    buf = BytesIO()
-    with wave.open(buf, "wb") as wf:
-        wf.setnchannels(1)  # Mono channel
-        wf.setsampwidth(2)  # Sample width in bytes
-        wf.setframerate(24000)  # Sample rate in Hz
-        wf.writeframes(unsafe_float_to_int16(wav))
-    buf.seek(0, 0)
+    data = wav_arr_to_mp3_view(wav)
     mp3_filename = f"output_audio_{index}.mp3"
     with open(mp3_filename, "wb") as f:
-        wav2(buf, f, "mp3")
+        f.write(data)
     logger.info(f"Audio saved to {mp3_filename}")
 
 

examples/web/funcs.py

@@ -6,7 +6,7 @@ from time import sleep
 import gradio as gr
 import numpy as np
 
-from tools.audio import unsafe_float_to_int16
+from tools.audio import wav_arr_to_mp3_view
 from tools.logger import get_logger
 
 logger = get_logger(" WebUI ")
@@ -146,10 +146,10 @@ def generate_audio(text, temperature, top_P, top_K, audio_seed_input, stream):
             for gen in wav:
                 audio = gen[0]
                 if audio is not None and len(audio) > 0:
-                    yield 24000, unsafe_float_to_int16(audio[0])
+                    yield wav_arr_to_mp3_view(audio[0]).tobytes()
                     del audio
         else:
-            yield 24000, unsafe_float_to_int16(np.array(wav[0]).flatten())
+            yield wav_arr_to_mp3_view(np.array(wav[0]).flatten()).tobytes()
 
 
 def interrupt_generate():

examples/web/webui.py

@@ -107,7 +107,6 @@ def main():
                 streaming=stream,
                 interactive=False,
                 show_label=True,
-                format="mp3",
             )
             generate_button.click(fn=set_buttons_before_generate, inputs=[generate_button, interrupt_button], outputs=[generate_button, interrupt_button]).then(
                 refine_text,

tools/audio/__init__.py

@@ -1,2 +1 @@
-from .np import unsafe_float_to_int16
-from .av import wav2
+from .mp3 import wav_arr_to_mp3_view

tools/audio/mp3.py

@@ -0,0 +1,20 @@
+import wave
+from io import BytesIO
+
+import numpy as np
+
+from .np import unsafe_float_to_int16
+from .av import wav2
+
+def wav_arr_to_mp3_view(wav: np.ndarray):
+    buf = BytesIO()
+    with wave.open(buf, "wb") as wf:
+        wf.setnchannels(1)  # Mono channel
+        wf.setsampwidth(2)  # Sample width in bytes
+        wf.setframerate(24000)  # Sample rate in Hz
+        wf.writeframes(unsafe_float_to_int16(wav))
+    buf.seek(0, 0)
+    buf2 = BytesIO()
+    wav2(buf, buf2, "mp3")
+    buf.seek(0, 0)
+    return buf2.getbuffer()