WIP: read wake volume

This requires modifications to ESP-ADF, so we need to bump it to a newer
version.

Dockerfile

@@ -27,7 +27,7 @@ COPY container.gitconfig /root/.gitconfig
 ENV PATH="$PATH:/willow/.local/bin"
 WORKDIR /willow
 
-ENV ADF_VER="2939a3e541f46f6dd916d2e3b7462609ec4fae5c"
+ENV ADF_VER="1ed0196fe4623f5760e512eb851c038cf0785b06"
 RUN \
     cd /opt/esp/idf && \
     curl https://raw.githubusercontent.com/toverainc/esp-adf/$ADF_VER/idf_patches/idf_v4.4_freertos.patch | patch -p1

main/audio.c

@@ -285,6 +285,13 @@ static esp_err_t cb_ar_event(audio_rec_evt_t are, void *data)
             if (recording) {
                 break;
             }
+            float *wake_volume_ptr = (float *)data;
+            if (wake_volume_ptr == NULL) {
+                ESP_LOGI(TAG, "wake_volume_ptr is NULL");
+            } else {
+                float wake_volume = *wake_volume_ptr;
+                ESP_LOGI(TAG, "wake volume: %f", wake_volume);
+            }
             reset_timer(hdl_display_timer, DISPLAY_TIMEOUT_US, true);
 
             speech_rec_mode = config_get_char("speech_rec_mode", DEFAULT_SPEECH_REC_MODE);