Canrt Make esp_flac_dec_decode or MP3 to work at all (AUD-5807)

[filzek]

Can you provide simple example of using:

esp_flac_dec_decode
esp_mp3_dec_decode
esp_aac_dec_decode

As we cant make it to work in esp-idf v5.2.3 or any other.

docs are bad, cant make it sense to work and provide output to i2s

[TempoTian]

If you are just use decoder to decode out pcm, you can use esp_audio_codec directly.
The example code is https://github.com/espressif/esp-adf-libs/blob/master/esp_audio_codec/test_apps/audio_codec_test/main/audio_decoder_test.c#L94

You can replace ret = cfg->read(raw_buf, max_raw_size); to read audio frame data and replace cfg->write(out_frame.buffer, out_frame.decoded_size); to save the decoded PCM data. When using these decoder API directly, make sure the input data is frame boudary.

If you want to input data of any length, you can try to use simple decoder, sample code in https://github.com/espressif/esp-adf-libs/blob/master/esp_audio_codec/test_apps/audio_codec_test/main/simple_decoder_test.c#L170