feat: Add ringbuff_free_pct variable in fetch results

include/esp32/esp_afe_sr_iface.h

@@ -46,6 +46,7 @@ typedef struct afe_fetch_result_t {
     int ret_value;           // the return state of fetch function
     int16_t *raw_data;       // the multi-channel output data of audio.
     int raw_data_channels;   // the channel number of raw data
+    float ringbuff_free_pct; // the percent of ringbuff free size. if the value is larger than 0.5, it means the ringbuff is buzy. 
     void *reserved;          // reserved for future use
 } afe_fetch_result_t;
 

include/esp32p4/esp_afe_sr_iface.h

@@ -46,6 +46,7 @@ typedef struct afe_fetch_result_t {
     int ret_value;           // the return state of fetch function
     int16_t *raw_data;       // the multi-channel output data of audio.
     int raw_data_channels;   // the channel number of raw data
+    float ringbuff_free_pct; // the percent of ringbuff free size. if the value is larger than 0.5, it means the ringbuff is buzy. 
     void *reserved;          // reserved for future use
 } afe_fetch_result_t;
 

include/esp32s3/esp_afe_sr_iface.h

@@ -46,6 +46,7 @@ typedef struct afe_fetch_result_t {
     int ret_value;           // the return state of fetch function
     int16_t *raw_data;       // the multi-channel output data of audio.
     int raw_data_channels;   // the channel number of raw data
+    float ringbuff_free_pct; // the percent of ringbuff free size. if the value is larger than 0.5, it means the ringbuff is buzy. 
     void *reserved;          // reserved for future use
 } afe_fetch_result_t;