make equalizer a string + make sure output-i2s is exited

- Can't really use BLOB (creates issue with HTTP visualizer)
- Player was stuck after WiFi loss b/c with some race conditions, BT deinit crashes and creates the reboot wanted after 5*5 failures. But when BT does not crash, reboot was not happening and player was stuck with slimproto not exited and player not rebooted

components/squeezelite/equalizer.c

@@ -8,7 +8,7 @@
  *
  */
 
-#include "nvs_utilities.h"
+#include "platform_config.h"
 #include "squeezelite.h" 
 #include "equalizer.h"
 #include "esp_equalizer.h"
@@ -27,13 +27,18 @@ static struct {
  * initialize equalizer
  */
 void equalizer_init(void) {
-	s8_t *gain = get_nvs_value_alloc(NVS_TYPE_BLOB, "equalizer");
-
-	if (!gain) gain = calloc(EQ_BANDS, sizeof(*gain));
+	s8_t gain[EQ_BANDS] = { };
+	char *config = config_alloc_get(NVS_TYPE_STR, "equalizer");
+	char *p = strtok(config, ", !");	
 
+	for (int i = 0; p && i < EQ_BANDS; i++) {
+		gain[i] = atoi(p);
+		p = strtok(NULL, ", :");
+	}
+
+	free(config);	
 	equalizer_update(gain);
-	free(gain);
-
+
 	LOG_INFO("initializing equalizer");
 }	
 
@@ -83,9 +88,18 @@ void equalizer_close(void) {
  * update equalizer gain
  */
 void equalizer_update(s8_t *gain) {
-	store_nvs_value_len(NVS_TYPE_BLOB, "equalizer", gain, EQ_BANDS * sizeof(*gain));
+	char config[EQ_BANDS * 4 + 1] = { };
+	char *p = config;
+
+	for (int i = 0; i < EQ_BANDS; i++) {
+		equalizer.gain[i] = gain[i];
+		if (gain[i] < 0) *p++ = '-';
+		*p++ = (gain[i] / 10) + 0x30;
+		*p++ = (gain[i] % 10) + 0x30;
+		if (i < EQ_BANDS - 1) *p++ = ',';
+	}
 
-	for (int i = 0; i < EQ_BANDS; i++) equalizer.gain[i] = gain[i];
+	config_set_value(NVS_TYPE_STR, "equalizer", config);					
 	equalizer.update = true;
 }
 

components/squeezelite/output_i2s.c

@@ -573,10 +573,11 @@ static void output_thread_i2s(void *arg) {
 		SET_MIN_MAX( TIME_MEASUREMENT_GET(timer_start),i2s_time);
 
 	}
-
-	vTaskDelete(NULL);
+
 	if (spdif.enabled) free(spdif.buf);
 	ended = true;
+
+	vTaskDelete(NULL);	
 }
 
 /****************************************************************************************

main/esp_app_main.c

@@ -326,6 +326,9 @@ void register_default_nvs(){
 	ESP_LOGD(TAG,"Registering default value for key %s, value %s", "bypass_wm", "0");
 	config_set_default(NVS_TYPE_STR, "bypass_wm", "0", 0);
 
+	ESP_LOGD(TAG,"Registering default value for equalizer");
+	config_set_default(NVS_TYPE_STR, "equalizer", "", 0);
+
 	ESP_LOGD(TAG,"Registering default Audio control board type %s, value ","actrls_config");
 	config_set_default(NVS_TYPE_STR, "actrls_config", "", 0);