New error when playing MP3 or WAV post latest build - ...src\audioi2s\i2sesp32v1.h : 184 - Invalid channel_format: 3 (using 1)

[cmcooper1971]

Hi,

Since applying the latest build, an error has started to appear when playing MP3 or WAV tracks. They still play OK, so it isnt stopping the system from working.

The error in the serial output is:

[W] C:\....\arduino\libraries\audio-tools\src\audioi2s\i2sesp32v1.h : 184 - Invalid channel_format: 3 (using 1)

Parameters

// Audio object

AudioInfo info(44100, 2, 16);

AudioInfo infoMic(44100, 2, 16);

// Audio streams in and out

I2SStream in;

I2SStream out;

ConverterFillLeftAndRight<int16_t> left_and_right(RightIsEmpty);

ConverterStream<int16_t> converter(in, left_and_right);

//AudioEffectStream effects(out);

EncodedAudioStream decoderWav(&out, new WAVDecoder());			// Decoding stream
EncodedAudioStream decoderMP3(&out, new MP3DecoderHelix());		// Decoding stream

StreamCopy wav;
StreamCopy mp3;
StreamCopy mic(out, converter);

Enable player function

// Enable Player & disable MIC

void enablePlayerMP3() {

	//effects.end();
	mic.end();
	in.end();
	out.end();

	// Start I2S out

	AudioLogger::instance().begin(Serial, AudioLogger::Warning);

	auto config_out = out.defaultConfig(TX_MODE);
	config_out.copyFrom(info);
	config_out.i2s_format = I2S_STD_FORMAT;
	config_out.is_master = true;
	config_out.port_no = 1;
	config_out.pin_bck = I2S_BCLK_1;
	config_out.pin_ws = I2S_LRC_1;
	config_out.pin_data = I2S_DOUT_1;
	config_out.pin_mck = I2S_MCLK_1;
	out.begin(config_out);

	// Start player

	decoderMP3.begin();
	mp3.begin(decoderMP3, audioFile);

	debugln("Player Enabled");
	digitalWrite(amberLED, HIGH);

	playerControlFlagChanged = false;

	displayVolumeRegister(false);
	displayFaultRegister(false);

}	// Close function

Loop

		size_t copied = mp3.copy();			// Start copy and check data byte size

		if (copied == 0 && playAudioFile == true) {

			// No more data to copy, end of file reached

			debugln("End of file reached.");

			disablePlayer();
			audioFile.close();
			playAudioFile = false;

		}

Like I said thou, everything still works OK, just be nice to know what the issue is and what it is happening as I cant seem to find the root cause?

[pschatzmann]

This is not an error but just a warning: If you are using a mono signal this is telling you that I2SChannelSelect::Left is used.

[cmcooper1971]

Thanks as ever!