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libraries/audio-tools/examples/tests/performance/mp3-Speed/mp3-Speed.ino

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+/**
+ * @file mp3-SynchronizedRingBuffer.ino
+ * @author Phil Schatzmann
+ * @brief Performance test for mp3 decoding form SD on core 1
+ * @version 0.1
+ * @date 2022-12-06
+ * 
+ * @copyright Copyright (c) 2022
+ * 
+ */
+#include "AudioTools.h"
+#include "AudioTools/Disk/AudioSourceSDFAT.h"
+#include "AudioTools/AudioCodecs/CodecMP3Helix.h"
+#include "AudioTools/AudioLibs/AudioBoardStream.h"
+
+const char *startFilePath="/";
+const char* ext="mp3";
+AudioSourceSDFAT source(startFilePath, ext, PIN_AUDIO_KIT_SD_CARD_CS);
+MP3DecoderHelix decoder;
+MeasuringStream out;
+AudioPlayer player(source, out, decoder);
+int count=0;
+
+void setup() {
+ Serial.begin(115200);
+ AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+ // sd_active is setting up SPI with the right SD pins by calling 
+ SPI.begin(PIN_AUDIO_KIT_SD_CARD_CLK, PIN_AUDIO_KIT_SD_CARD_MISO, PIN_AUDIO_KIT_SD_CARD_MOSI, PIN_AUDIO_KIT_SD_CARD_CS);
+
+ // setup player
+ player.setDelayIfOutputFull(0);
+ player.setVolume(0.1);
+ player.begin(); 
+}
+
+void loop() {
+    player.copy();
+    count++;
+
+    if (count==100){
+        Serial.println(out.bytesPerSecond()/32);
+        count = 0;
+    }
+}