MP3_DECODER: Allocate decoder buffer failed

[Raffneck]

We recently upgraded a project for the ESP32
from IDF v3.3.5 and ADF v2.0
to IDF v4.4 and ADF v2.4

In the project a SSL connection and a audio player is used.
Unfortunatly since the upgrade we get a allocation error after a while when the SSL Connection is still active.

The main problem is that the mp3_decoder reallocates the memory evertime the pipeline is restarted.
This was not the case in the old version, we could not detect any reallocation there.
[The relinking part in the code below is only called on startup]

We were not able to set the mp3_decoder so that it keeps its buffer and does not free and reallocate it.
Is there a way to fix the buffer for the mp3_decoder and reuse it without reallocating it everytime?
It seems that the decoder has a different allocation routine sometimes
because the available heap size varies after the call to run the pipeline.

This is the code we use to restart the pipeline:

Code: [Select all] [Expand/Collapse]

1.    //Stop the current playing
2.     audio_pipeline_stop(pipeline);
3.     audio_pipeline_wait_for_stop(pipeline);
4.    
5.    //Relink if the mapping changed
6.    //Which is only the case in the first call
7.     if (relink)
8.     {
9.  
10.         audio_pipeline_terminate_with_ticks(pipeline, portMAX_DELAY);
11.         audio_pipeline_remove_listener(pipeline);
12.         audio_pipeline_unlink(pipeline);
13.         audio_pipeline_link(pipeline, mapping, 4);
14.         audio_pipeline_set_listener(pipeline, evt);
15.     }
16.  
17.  
18.     audio_element_set_uri(AddSource, uri);
19.  
20.    //Resetting state
21.     audio_pipeline_reset_ringbuffer(pipeline);
22.     audio_pipeline_reset_elements(pipeline);
23.     audio_pipeline_change_state(pipeline, AEL_STATE_INIT);
24.  
25.     //Starting pipe
26.     audio_pipeline_run(pipeline);

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