70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
/**
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* @file streams-sd_wav4-i2s.ino
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* @author Phil Schatzmann
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* @brief decode WAV file with 4 channels and output it on 2 I2S ports
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* @version 0.1
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* @date 2021-96-25
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*
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* @copyright Copyright (c) 2021
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*/
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#include <SD.h>
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#include <SPI.h>
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#include "AudioTools.h"
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#include "AudioTools/AudioCodecs/CodecMP3Helix.h"
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const int chipSelect = 10;
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AudioInfo info(44100, 2, 16);
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AudioInfo info4(44100, 4, 16);
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I2SStream i2s_1; // final output port 0
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I2SStream i2s_2; // final output port 1
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ChannelsSelectOutput out;
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WAVDecoder wav;
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EncodedAudioOutput decoder(&out, &wav); // Decoding stream
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StreamCopy copier;
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File audioFile;
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void setup() {
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Serial.begin(115200);
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
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// setup file
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SD.begin(chipSelect);
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audioFile = SD.open("/Music/ch4.wav");
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// setup i2s
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auto config1 = i2s_1.defaultConfig(TX_MODE);
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config1.copyFrom(info);
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// config1.port_no = 0; // 0 is default port
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i2s_1.begin(config1);
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auto config2 = i2s_2.defaultConfig(TX_MODE);
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config2.copyFrom(info);
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// use separate pins
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config2.pin_ws = 4;
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config2.pin_bck = 5;
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config2.pin_data = 6;
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// use port 1
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config2.port_no = 1;
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i2s_2.begin(config2);
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// split channels to different i2s ports
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out.addOutput(i2s_1, 0, 1);
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out.addOutput(i2s_2, 2, 3);
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// 4 channels
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out.begin(info4);
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// setup decoder
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decoder.begin();
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// begin copy
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copier.begin(decoder, audioFile);
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}
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void loop() {
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if (!copier.copy()) {
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stop();
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}
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}
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