snapshot

libraries/audio-tools/examples/tests/etc/test-write-memory/test-write-memory.ino

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+#include "AudioTools.h"
+
+#define SAMPLE_COUNT 2048
+#define SAMPLE_BUFFER_SIZE sizeof(int32_t) * SAMPLE_COUNT
+unsigned char raw_data[SAMPLE_BUFFER_SIZE];
+AudioInfo info(8000, 1, 32);
+I2SStream i2sStream;  // Access I2S as stream
+MemoryStream raw_samples(raw_data, SAMPLE_BUFFER_SIZE, true, RAM);
+StreamCopy copier(raw_samples, i2sStream, 1024);  // copies sound
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+  auto cfg = i2sStream.defaultConfig(RX_MODE);
+  cfg.copyFrom(info);
+  i2sStream.begin(cfg);
+
+  raw_samples.begin();
+
+  copier.copy();
+
+  assert(raw_samples.available()== 1024);
+  assert(raw_samples.availableForWrite()== 7168);
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+}