Merge branch 'bugfix/esp_rtc_example_no_audio' into 'master'

Bugfix/esp rtc example no audio

See merge request adf/esp-adf-internal!1329

Author: jason-mao

Diff for: examples/protocols/components/av_stream/av_stream_hal/av_stream_hal_audio.c

@@ -151,12 +151,14 @@ int av_stream_audio_read(char *buf, int len, TickType_t wait_time, bool uac_en)
         return ret;
     } else {
         ret = audio_element_input(i2s_io_reader, buf, len);
-        if (ret < 0) {
-            ESP_LOGE(TAG, "i2s read failed");
+        if (ret <= 0) {
+            ESP_LOGE(TAG, "i2s fail read ret %d", ret);
+            return ret;
         }
         #if (CONFIG_IDF_TARGET_ESP32 && !RECORD_HARDWARE_AEC)
         algorithm_mono_fix((uint8_t *)buf, bytes_read);
         #endif
+        bytes_read = ret;
     }
 
     return bytes_read;