esp_codec_dev provide register setting to outside
components/esp_codec_dev/device/zl38063/zl38063.c
you call audio_codec_new_spi_ctrl to build spi control interface
then use codec->set_reg to set registers

i2s has following API:
esp_err_t i2s_stream_set_clk(audio_element_handle_t i2s_stream, int rate, int bits, int ch);

the rate setting is the sample_rate settings, please make sure the input data rate and I2S sample rate is matched or else the tone will listen to be strange

Buffer_len is added to fix the issue when play 24bits, the buffer needs sample aligned, if use 1024 it will have issue.
It is added recently and initialized using I2S_STREAM_CFG_DEFAULT()
If your example do not not the macro to do the initialization and assign value manually. It will have issue.

C6 的支持需要 ADF适配 IDF 5.1 以上的版本，预计下一个ADF release的版本 v2.6 就可以支持了

Currently there is no MP2 encoding yet, or you can port open source MP2 encode into IDF and do test. Is it possible to use aac encoder instead, ADF already provide an optimized aac encoder and can mux into TS container also. You can see https://github.com/espressif/esp-adf/blob/master/examples/recor...

you can find the sample code in:
https://github.com/espressif/esp-adf/bl ... _example.c

https://github.com/espressif/esp-adf-li ... _decoder.h

Suppose your test file is "/sdcard/test.mp3" you can use follow code directly to play mp3. #include <string.h> #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "esp_log.h" #include "nvs_flash.h" #include "sdkconfig.h" #include "audio_element.h" #include "audio_pipeline.h" #include ...

You can enable PSRAM to verify whether this issue fixed or not
idf.py menuconfig --> component config --> esp32s3-Specific --> Support for external SPI-connected RAM

also you can include "audio_mem.h"
audio_mem_print("", __LINE__, __func__); to print the detail memory information in code

I2S 是支持32bits的，直接配置下bits_per_sample就可以了
目前MP3解码库只支持16bits,所以从decode出来的没有32bits

在example的CMakeLists.txt中添加ADF的components的路径就可以用ADF了
cmake_minimum_required(VERSION 3.5)

include($ENV{ADF_PATH}/CMakeLists.txt) 添加这一行
include($ENV{IDF_PATH}/tools/cmake/project.cmake)

project(bt_source_demo)

在编译前指定ADF_PATH
export ADF_PATH=.../esp-adf-internal