65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/**
|
|
* @file streams-sd_m4a-audiokit.ino
|
|
* @author Peter Schatzmann
|
|
* @brief Example for decoding M4A files on the AudioKit using the AudioBoardStream
|
|
* @version 0.1
|
|
* @date 2023-10-01
|
|
*/
|
|
|
|
#include "AudioTools.h"
|
|
#include "AudioTools/AudioCodecs/CodecALAC.h"
|
|
#include "AudioTools/AudioCodecs/CodecAACHelix.h"
|
|
#include "AudioTools/AudioCodecs/ContainerM4A.h"
|
|
#include "AudioTools/AudioCodecs/MultiDecoder.h"
|
|
#include "AudioTools/AudioLibs/AudioBoardStream.h" // install https://github.com/pschatzmann/arduino-audio-driver
|
|
#include "SD.h"
|
|
|
|
MultiDecoder multi_decoder;
|
|
ContainerM4A dec_m4a(multi_decoder);
|
|
AACDecoderHelix dec_aac;
|
|
DecoderALAC dec_alac;
|
|
AudioBoardStream out(AudioKitEs8388V1);
|
|
EncodedAudioOutput decoder_output(&out, &dec_m4a);
|
|
File file;
|
|
StreamCopy copier(decoder_output, file);
|
|
|
|
void setup() {
|
|
Serial.begin(115200);
|
|
AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
|
|
|
|
// start AudioBoard with setup of CD pins
|
|
auto cfg = out.defaultConfig(TX_MODE);
|
|
cfg.sd_active = true;
|
|
if (!out.begin(cfg)){
|
|
Serial.println("Failed to start CSV output!");
|
|
return;
|
|
}
|
|
|
|
if (!SD.begin(PIN_AUDIO_KIT_SD_CARD_CS)){
|
|
Serial.println("SD Card initialization failed!");
|
|
return;
|
|
}
|
|
|
|
file = SD.open("/m4a/aac.m4a");
|
|
if (!file) {
|
|
Serial.println("Failed to open file!");
|
|
return;
|
|
}
|
|
|
|
// mp4 supports alac and aac
|
|
multi_decoder.addDecoder(dec_alac,"audio/alac");
|
|
multi_decoder.addDecoder(dec_aac,"audio/aac");
|
|
|
|
// start decoder output
|
|
if(!decoder_output.begin()) {
|
|
Serial.println("Failed to start decoder output!");
|
|
return;
|
|
}
|
|
|
|
Serial.println("M4A decoding started...");
|
|
}
|
|
|
|
|
|
void loop() {
|
|
copier.copy();
|
|
} |