CodecMP3Helix compile error

[AlfredoCubitos]

Hi,

I want to compile the following code:

#include "BluetoothA2DPSink.h"
#include "AudioTools.h"
#include "AudioCodecs/CodecMP3Helix.h"

BluetoothA2DPSink a2dp_sink;

AnalogAudioStream analog; // final output of decoded stream
EncodedAudioStream dec(&analog, new MP3DecoderHelix()); // Decoding stream

void data_received_callback(const uint8_t *data, uint32_t length) {
  //Serial.println("Data packet received");
  int16_t *samples = (int16_t*) data;
  uint32_t sample_count = length/2;
}

void setup() {
  Serial.begin(115200);
  Serial.println("Bluetooth Audio Receiver");

    static const i2s_config_t i2s_config = {
        .mode = (i2s_mode_t) (I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN),
        .sample_rate = 44100, // corrected by info from bluetooth
        .bits_per_sample = (i2s_bits_per_sample_t) 16, /* the DAC module will only take the 8bits from MSB */
        .channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
        .communication_format = (i2s_comm_format_t)I2S_COMM_FORMAT_STAND_MSB,
        .intr_alloc_flags = 0, // default interrupt priority
        .dma_buf_count = 8,
        .dma_buf_len = 64,
        .use_apll = false
    };

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

    a2dp_sink.set_i2s_config(i2s_config);
    a2dp_sink.start("MyMusic");
   // a2dp_sink.set_on_data_received(data_received_callback);

}

void loop() {
}

I get this error:

In file included from /tmp/.arduinoIDE-unsaved202366-16013-1cm8w8g.8u1w/sketch_jul6b/sketch_jul6b.ino:3:
/Devel/Arduino/scripts/libraries/audio-tools/src/AudioCodecs/CodecMP3Helix.h: In member function 'virtual void audio_tools::MP3DecoderHelix::setNotifyAudioChange(audio_tools::AudioInfoDependent&)':
/Devel/Arduino/scripts/libraries/audio-tools/src/AudioCodecs/CodecMP3Helix.h:127:65: error: invalid conversion from 'void (*)(MP3FrameInfo&)' {aka 'void (*)(_MP3FrameInfo&)'} to 'libhelix::MP3InfoCallback' {aka 'void (*)(_MP3FrameInfo&, void*)'} [-fpermissive]
             if (mp3!=nullptr)  mp3->setInfoCallback(infoCallback);
                                                                 ^
In file included from /Devel/Arduino/scripts/libraries/audio-tools/src/AudioCodecs/CodecMP3Helix.h:6,
                 from /tmp/.arduinoIDE-unsaved202366-16013-1cm8w8g.8u1w/sketch_jul6b/sketch_jul6b.ino:3:
/Devel/Arduino/scripts/libraries/libhelix/src/MP3DecoderHelix.h:51:46: note:   initializing argument 1 of 'void libhelix::MP3DecoderHelix::setInfoCallback(libhelix::MP3InfoCallback, void*)'
         void setInfoCallback(MP3InfoCallback cb, void* caller=nullptr){
                              ~~~~~~~~~~~~~~~~^~

exit status 1

Compilation error: exit status 1

Any idea where the problem is?

I'm trying to send bluetooth data to an analog amplifier PAM8403. The example Output to the Internal DAC does not work. :-( Means, there is no useful sound output. Can you please give an example how to use a2dp_sink data with an analog amplifier?

[pschatzmann]

I cant't reproduce your issue.

Make sure you use the latest versions of the AudioTools and LibHelix. I guess you are using one updated version with an old incompatible one...

But your sketch does not make any sense at all! You don't need any mp3 decoder for A2DP. And you don't need the AudioTools for the output to the internal DAC.

If your want to use the A2DP library togheter with the AudioTools I suggest that you have a look this example. Then just replace the I2SStream with an AnalogAudioStream.

[AlfredoCubitos]

I installed the zip from the git source repository and not from release repro. After installing the release version it works :-) Thank you ! :+1: