Audio added to firmware, Website File handling

firmware/libs/audio/include/audio.h

@@ -0,0 +1,33 @@
+#ifndef AUDIO_H
+#define AUDIO_H
+#include <zephyr/kernel.h>
+
+#include "fs_mgmt.h"
+
+/** Audio command message structure */
+struct audio_cmd_msg
+{
+    char filename[CONFIG_FS_MGMT_MAX_PATH_LENGTH]; // Wenn leer, nutze Fallback-Sound
+    bool is_interrupt;                      // True = sofort abbrechen, False = Enqueue
+};
+
+/**
+ * @brief Queues an audio playback command to the audio thread
+ * @param filename Name of the audio file to play. If empty, a random sound will be played
+ * @param is_interrupt If true, the command will interrupt any currently playing audio. If
+ * false, it will be enqueued and played after the current audio finishes
+ * @return 0 on success, negative error code on failure
+ */
+int audio_queue_play(const char *filename, bool is_interrupt);
+
+/**
+ * @brief Starts playback of a random audio file from the audio directory. This is a non-blocking call that signals the audio thread to select and play a random sound.
+ */
+void audio_start_random_playback(void);
+
+/**
+ * @brief Refreshes the list of available audio files
+ */
+void audio_refresh_files(void);
+
+#endif /* AUDIO_H */