snapshot

libraries/audio-tools/examples/tests/codecs/test-codec-wav-adpcm/test-codec-wav-adpcm.ino

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+#include "AudioTools.h"
+#include "AudioTools/AudioCodecs/CodecWAV.h" 
+#include "AudioTools/AudioCodecs/CodecADPCM.h"
+
+AudioInfo info(16000, 2, 16);
+SineWaveGenerator<int16_t> sineWave( 32000);  
+GeneratedSoundStream<int16_t> sound( sineWave); 
+CsvOutput<int16_t> out(Serial);
+AVCodecID id = AV_CODEC_ID_ADPCM_IMA_WAV;
+ADPCMDecoder adpcm_decoder(id); 
+ADPCMEncoder adpcm_encoder(id);  
+WAVDecoder wav_decoder(adpcm_decoder, AudioFormat::ADPCM);
+WAVEncoder wav_encoder(adpcm_encoder, AudioFormat::ADPCM);
+EncodedAudioStream decoder(&out, &wav_decoder); 
+EncodedAudioStream encoder(&decoder, &wav_encoder); 
+StreamCopy copier(encoder, sound);     
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // start Output
+  auto cfgi = out.defaultConfig(TX_MODE);
+  cfgi.copyFrom(info);
+  out.begin(cfgi);
+
+  // Setup sine wave
+  auto cfgs = sineWave.defaultConfig();
+  cfgs.copyFrom(info);
+  sineWave.begin(info, N_B4);
+
+  // start decoder
+  decoder.begin(info);
+
+  // start encoder
+  encoder.begin(info);
+}
+
+void loop() { 
+  copier.copy();
+}