snapshot

libraries/audio-tools/examples/tests/basic/test-buffered-stream/test-buffered-stream.ino

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+/**
+ * Testing peek and readBytes of BufferedStream
+ * - fill DynamicMemoryStream with data
+ * - check data of DynamicMemoryStream
+ * - peek data
+ * - check data vis BufferedStream
+ */
+#include "AudioTools.h"
+
+DynamicMemoryStream data;
+BufferedStream buffered(data);
+HexDumpOutput out;
+const int processingSize = 1024;
+uint8_t buffer[processingSize];
+
+void fillData() {
+  Serial.println("Filling data...");
+  for (int j = 0; j < processingSize; j++) {
+    buffer[j] = j % 256;
+  }
+  while (data.size() < processingSize * 10) {
+    assert(data.write(buffer, processingSize) == processingSize);
+  }
+}
+
+void testPeek() {
+  int len = buffered.peekBytes(&buffer[0], 160);
+  Serial.println("Peek:");
+  out.write(buffer, len);
+  Serial.println();
+}
+
+void checkData(Stream &data, bool isPrint = false) {
+  // check data
+  Serial.print("TestingData");
+  int n = data.readBytes(buffer, processingSize);
+  Serial.print(" ");
+  Serial.println(n);
+  while (n == processingSize) {
+    for (int j = 0; j < processingSize; j++) {
+      uint8_t expected = j % 256;
+      if (isPrint) {
+        Serial.print(buffer[j]);
+        Serial.print(", ");
+        Serial.println(expected);
+      }
+      assert(buffer[j] == expected);
+      n = data.readBytes(buffer, processingSize);
+      assert(n == 0 || n == processingSize);
+    }
+  }
+  Serial.println("test OK!");
+}
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+  delay(5000);
+
+  data.begin();
+  fillData();
+  testPeek();
+  checkData(data);
+  
+  data.rewind();
+  checkData(buffered);
+}
+
+void loop() {
+}