Possibility to use 2 Audio at the same time

[AntoineLep]

Hi,

I would like to use 2 audios at the same time to play a WAV voice feedback when I do a specific action while listening to a main audio MP3 file but It actually doesn't work when declaring:

Audio audio;
Audio audio2;

I got the following errors:

E (1231) i2s_common: i2s_new_channel(812): no available channel found
E (1231) i2s_std: i2s_channel_init_std_mode(199): input parameter 'handle' is NULL
E (1233) i2s_common: i2s_channel_enable(999): input parameter 'handle' is NULL

Then one audio can't play at all.

I've tried using a single Audio but it can't handle audio file switch quick enough for me. MP3 loading is always something like 2-3 sec long and I have to reposition it which is not very precise.

Have you any idea how I can workaround this issue ?

Thanks,

Antoine

[AntoineLep]

I ve found a workaround but had to add a method to your code to get the I2S tx handle

Open .pio/libdeps/esp32/ESP32-audioI2S/src/Audio.h

Add the following to Audio class public declarations

#if ESP_IDF_VERSION_MAJOR == 5
    i2s_chan_handle_t getI2sTxHandle();
#endif

Open .pio/libdeps/esp32/ESP32-audioI2S/src/Audio.cpp

Add the following at the very bottom of the file

#if ESP_IDF_VERSION_MAJOR == 5
i2s_chan_handle_t Audio::getI2sTxHandle() {
    return m_i2s_tx_handle;
}
#endif

Then I can switch the I2S config like this:

void setI2SConfigMP3() {
    if(currentI2SConfigType != MP3_CT) {
        _amp_mute();
        currentI2SConfigType = MP3_CT;
        audio.setI2SCommFMT_LSB(false);
        audio.audioFileSeek(1);
    };
}

void setI2SConfigWav() {
    if(currentI2SConfigType != WAV_CT) {
        _amp_mute();
        currentI2SConfigType = WAV_CT;
        i2s_channel_disable(audio.getI2sTxHandle());
        i2s_channel_reconfig_std_clock(audio.getI2sTxHandle(), &wav_i2sStdCfg.clk_cfg);
        i2s_channel_reconfig_std_slot(audio.getI2sTxHandle(), &wav_i2sStdCfg.slot_cfg);
        i2s_channel_enable(audio.getI2sTxHandle());
    };
}

[jie326513988]

Can two audio streams be played simultaneously, which is equivalent to mixing?

[AntoineLep]

Well, here I don't want to mix 2 audios.
I just want to pause audio1 and then play audio2
And then playback audio1 when audio2 is finished

[github-actions]

This issue is stale because it has been open for 30 days with no activity.