snapshot

libraries/audio-tools/examples/tests/codecs/test-memory-helix/test-memory-helix.ino

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+
+#include "AudioTools.h"
+#include "AudioTools/AudioCodecs/CodecMP3Helix.h"
+#include "AudioTools/Communication/AudioHttp.h"
+
+/**
+ * @brief Sketch to test the memory usage with libhelix with an ESP32
+ * => Available heap 140980-151484
+ */
+
+
+
+URLStream url("SSID","password");
+I2SStream i2s; // final output of decoded stream
+VolumeStream volume(i2s);
+LogarithmicVolumeControl lvc(0.1);
+EncodedAudioStream dec(&volume,new MP3DecoderHelix()); // Decoding stream
+StreamCopy copier(dec, url); // copy url to decoder
+
+void setup(){
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);  
+
+  // setup i2s
+  auto config = i2s.defaultConfig(TX_MODE);
+  i2s.begin(config);
+
+  // setup I2S based on sampling rate provided by decoder
+  dec.begin();
+
+// set initial volume
+  volume.setVolumeControl(lvc);
+  volume.setVolume(0.5);
+
+// mp3 radio
+  url.begin("http://stream.srg-ssr.ch/m/rsj/mp3_128","audio/mp3");
+}
+
+uint32_t i=0;
+uint32_t minFree=0xFFFFFFFF;
+uint32_t maxFree=0;
+uint32_t actFree;
+
+void minMax(){
+  if (i%1000==0){
+    actFree = ESP.getFreeHeap();
+    if (actFree < minFree){
+      minFree = actFree;
+    }
+    if (actFree > maxFree){
+      maxFree = actFree;
+    }
+    Serial.println();
+    Serial.print(actFree);
+    Serial.print(":");
+    Serial.print(minFree);
+    Serial.print("-");
+    Serial.println(maxFree);
+  }
+  
+}
+
+void loop(){
+  copier.copy();
+  minMax();
+}