when play google TTS 2 or 3 times, it crashes

[lioujj]

Hi
When I use AudioFileSourceICYStream to play google TTS voice 2 or 3 times, it will crash!
I try to increase the buffer size, but it still not works.

TTS code here:
i2sFile = new AudioFileSourceHTTPStream("http://translate.google.com/translate_tts?ie=UTF-8&client=tw-ob&tl=en&q="+YourTextHere);

I use a DAC MAX98357A.
Thanks!

[JJ-Concept]

Same issue here. ESP32 completely freezes after playing google tts. It had worked for half a year perfectly fine but the same problem occurs now on two different devices here that use esp8266audio to play google tts.

Error (several of these):
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 33265'

Then it shows "Running for xxx ms" two times (the second one appearing after more than a second) and then the ESP32 completely freezes. No further output on serial, no reaction anymore...

Would be cool to get this error fixed as i prefer google tts instead of esp8266sam becuase it talks more clearly and supports more than only english language ;-)

Thanks

[schmurtzm]

Same problem here : I play one google tts mp3 then it hang immediately at the end of the sound.
I tried :

• with esp8266 (wemos D1, no dac)
• with ESP32 (with "dac" and "no dac")
• with "out->SetRate(22050);"

Always with the same result : it play correctly but no more response from the ESP and no stack trace...
May be a debugger with ESP32 could be useful for better investigation ?

[schmurtzm]

Edit : some additional test & information :

• if you stop during the playing of the streamed file there is no hang of the ESP.
• The ESP doesn't crash, continue to being "ping" and after few minutes it gives back the hand.
• If I use the same mp3 from google in SPIFFS or on another web server -> no problem at all

So there is something which hang in the library (may be in "bool AudioGeneratorMP3::loop()" ? ) when playing specific url from google TTS...

[schmurtzm]

Hi, easy way to reproduce the bug : Take "StreamMP3FromHTTP" example, and replace :
const char *URL="http://kvbstreams.dyndns.org:8000/wkvi-am";
with
const char *URL="http://translate.google.com/translate_tts?ie=UTF-8&q=bonjour&tl=fr&client=tw-ob&ttsspeed=1";

This is a record of the sound that I obtain.

Output of the StatusCallback :

...Connecting to WiFi
Connected
+0 0x3ffb1ed8
Running for 4334 ms...
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2048'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2049'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2050'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2051'
STATUS(mp3) '257' = 'Decoding error 'lost synchronization' at byte offset 2052'

... And after a long time (about 3 minutes), the hang is released (if we stop the output before the end of the file there is no hang) :

STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
Running for 244596 ms...
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
STATUS(mp3) '1' = 'Decoding error 'input buffer too small (or EOF)' at byte offset'
MP3:ERROR_BUFLEN 0
STATUS(buffer) '2' = 'Refilling buffer'
STATUS(buffer) '3' = 'Buffer underflow'
MP3 done
MP3 done
MP3 done

The codec used by Google TTS seems classic :

@FedericoBusero You have resolved a similar issue with RTTTL recently (thanks for that !) , do you have an idea for this one too ?
Having good and multilingual TTS on ESP is a killer feature 😉

[schmurtzm]

Managing Google TTS seems more complex than what I was thinking...
I found this great I2S library which support Google TTS: ESP32-audioI2S

As you can see here the author has made a complex function to use Google TTS. This could be a good source of inspiration to make a new AudioFileSourceGoogleTTS.h 😅

Interesting facts : I also tested to play Google TTS on this library without using this specific function, just with the URL of Google Translate and the result was similar to ESP8266Audio : at the end of the play there is a buffer problem. It doesn't hang the ESP on this library but it means that Google TTS send the mp3 file in a particular way which require more work than a classic mp3 stream.