Create RingBuffer for VoiceAssistant (#6102)

esphome/core/ring_buffer.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#ifdef USE_ESP32
+
+#include <freertos/FreeRTOS.h>
+#include <freertos/stream_buffer.h>
+
+#include <cinttypes>
+#include <memory>
+
+namespace esphome {
+
+class RingBuffer {
+ public:
+  size_t read(void *data, size_t size, TickType_t ticks_to_wait = 0);
+
+  size_t write(void *data, size_t len);
+
+  size_t available() const;
+  size_t free() const;
+
+  BaseType_t reset();
+
+  static std::unique_ptr<RingBuffer> create(size_t len);
+
+ protected:
+  StreamBufferHandle_t handle_;
+  StaticStreamBuffer_t structure_;
+  uint8_t *storage_;
+};
+
+}  // namespace esphome
+
+#endif