headphone, bass/treble, battery from LMS

components/squeezelite/embedded.c

@@ -14,6 +14,7 @@
 #include "esp_system.h"
 #include "esp_timer.h"
 #include "esp_wifi.h"
+#include "monitor.h"
 
 mutex_type slimp_mutex;
 
@@ -60,3 +61,11 @@ u16_t get_RSSI(void) {
     if (wifidata.primary != 0) return 100 + wifidata.rssi + 30;
     else return 0xffff;
 }	
+
+u16_t get_plugged(void) {
+    return jack_inserted_svc() ? PLUG_HEADPHONE : 0;
+}
+
+u8_t get_battery(void) {
+	return (battery_level_svc() * 16) / 100;
+}	 

components/squeezelite/embedded.h

@@ -66,8 +66,13 @@ extern mutex_type slimp_mutex;
 #define LOCK_P   mutex_lock(slimp_mutex)
 #define UNLOCK_P mutex_unlock(slimp_mutex)
 
-// must provide or define as 0xffff
-u16_t		get_RSSI(void);
+// bitmap of plugs status
+#define PLUG_LINE_IN 	0x01
+#define PLUG_LINE_OUT	0x02
+#define PLUG_HEADPHONE	0x04
+u16_t	get_RSSI(void);			// must provide or define as 0xffff
+u16_t	get_plugged(void);		// must provide or define as 0x0
+u8_t	get_battery(void);		// must provide 0..15 or define as 0x0
 
 // to be defined to nothing if you don't want to support these
 extern struct visu_export_s {

components/squeezelite/output_i2s.c

@@ -31,6 +31,7 @@ sure that using rate_delay would fix that
 */
 
 #include "squeezelite.h"
+#include "slimproto.h"
 #include "esp_pthread.h"
 #include "driver/i2s.h"
 #include "driver/i2c.h"
@@ -82,6 +83,7 @@ const struct adac_s *adac = &dac_external;
 
 static log_level loglevel;
 
+static bool (*slimp_handler_chain)(u8_t *data, int len);
 static bool jack_mutes_amp;
 static bool running, isI2SStarted;
 static i2s_config_t i2s_config;
@@ -108,6 +110,36 @@ static void (*jack_handler_chain)(bool inserted);
 
 #define I2C_PORT	0
 
+/****************************************************************************************
+ * AUDO packet handler
+ */
+static bool handler(u8_t *data, int len){
+	bool res = true;
+	
+	if (!strncmp((char*) data, "audo", 4)) {
+		struct audo_packet *pkt = (struct audo_packet*) data;
+		// 0 = headphone (internal speakers off), 1 = sub out,
+		// 2 = always on (internal speakers on), 3 = always off	
+
+		if (jack_mutes_amp != (pkt->config == 0)) {
+			jack_mutes_amp = pkt->config == 0;
+			config_set_value(NVS_TYPE_STR, "jack_mutes_amp", jack_mutes_amp ? "y" : "n");		
+			
+			if (jack_mutes_amp && jack_inserted_svc()) adac->speaker(false);
+			else adac->speaker(true);
+		}
+
+		LOG_INFO("got AUDO %02x", pkt->config);
+	} else {
+		res = false;
+	}
+	
+	// chain protocol handlers (bitwise or is fine)
+	if (*slimp_handler_chain) res |= (*slimp_handler_chain)(data, len);
+	
+	return res;
+}
+
 /****************************************************************************************
  * jack insertion handler
  */
@@ -164,6 +196,10 @@ void output_init_i2s(log_level level, char *device, unsigned output_buf_size, ch
 	int silent_do = -1;
 	char *p;
 	esp_err_t res;
+
+	// chain SLIMP handlers
+	slimp_handler_chain = slimp_handler;
+	slimp_handler = handler;	
 	
 	p = config_alloc_get_default(NVS_TYPE_STR, "jack_mutes_amp", "n", 0);
 	jack_mutes_amp = (strcmp(p,"1") == 0 ||strcasecmp(p,"y") == 0);

components/squeezelite/slimproto.c

@@ -190,6 +190,7 @@ static void sendSTAT(const char *event, u32_t server_timestamp) {
 	packN(&pkt.bytes_received_L, (u64_t)status.stream_bytes & 0xffffffff);
 #if EMBEDDED
 	packn(&pkt.signal_strength, get_RSSI());
+	packn(&pkt.voltage, (get_battery() << 4) | get_plugged());
 #else 
 	pkt.signal_strength = 0xffff;
 #endif	
@@ -197,7 +198,6 @@ static void sendSTAT(const char *event, u32_t server_timestamp) {
 	packN(&pkt.output_buffer_size, status.output_size);
 	packN(&pkt.output_buffer_fullness, status.output_full);
 	packN(&pkt.elapsed_seconds, ms_played / 1000);
-	// voltage;
 	packN(&pkt.elapsed_milliseconds, ms_played);
 	pkt.server_timestamp = server_timestamp; // keep this is server format - don't unpack/pack
 	// error_code;

components/squeezelite/slimproto.h

@@ -178,6 +178,12 @@ struct codc_packet {
 	u8_t  pcm_endianness;
 };
 
+// initially Boom 
+struct audo_packet {
+	char  opcode[4];
+	u8_t  config;
+};
+
 #ifndef SUN
 #pragma pack(pop)
 #else