54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/**
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* @file test-codec-opus.ino
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* @author Phil Schatzmann
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* @brief generate sine wave -> encoder -> decoder -> audiokit (i2s)
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* @version 0.1
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* @date 2022-04-30
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*
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* @copyright Copyright (c) 2022
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*
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*/
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#include "AudioTools.h"
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#include "AudioTools/AudioLibs/AudioBoardStream.h"
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#include "AudioTools/AudioCodecs/CodecOpus.h"
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AudioInfo info(24000, 1, 16);
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SineWaveGenerator<int16_t> sineWave( 32000); // subclass of SoundGenerator with max amplitude of 32000
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GeneratedSoundStream<int16_t> sound( sineWave); // Stream generated from sine wave
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AudioBoardStream out(AudioKitEs8388V1);
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OpusAudioDecoder dec;
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OpusAudioEncoder enc;
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EncodedAudioStream decoder(&out, &dec); // encode and write
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EncodedAudioStream encoder(&decoder, &enc); // encode and write
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StreamCopy copier(encoder, sound);
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void setup() {
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Serial.begin(115200);
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
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// start I2S
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Serial.println("starting I2S...");
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auto cfgi = out.defaultConfig(TX_MODE);
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cfgi.copyFrom(info);
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out.begin(cfgi);
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// Setup sine wave
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sineWave.begin(info, N_B4);
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// Opus encoder and decoder need to know the audio info
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decoder.begin(info);
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encoder.begin(info);
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// configure additinal parameters
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// auto &enc_cfg = enc.config()
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// enc_cfg.application = OPUS_APPLICATION_RESTRICTED_LOWDELAY;
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// enc_cfg.frame_sizes_ms_x2 = OPUS_FRAMESIZE_20_MS;
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// enc_cfg.complexity = 5;
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Serial.println("Test started...");
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}
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void loop() {
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copier.copy();
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} |