add RTTTL player and alarm

platformio.ini

@@ -24,8 +24,8 @@ lib_deps =
     u8g2
     NTPClient
 ;    ESP8266Audio
-;    https://github.com/earlephilhower/ESP8266Audio.git
-    https://github.com/h3ndrik/ESP8266Audio.git
+    https://github.com/earlephilhower/ESP8266Audio.git
+;    https://github.com/h3ndrik/ESP8266Audio.git
     https://github.com/Gianbacchio/ESP8266_Spiram.git
     Adafruit Unified Sensor
     Adafruit BME280 Library

src/main.cpp

@@ -436,6 +436,13 @@ void loop()
 //      mp3.setVolume(10);
 //      mp3.start_Progmem();
 //      delay(1500);
+
+      static const char starwars[] PROGMEM =
+        "starwars:d=4,o=5,b=180:8f,8f,8f,2a#.,2f.6,8d#6,8d6,8c6,2a#.6,f.6,8d#6,8d6,8c6,2a#.6,f.6,8d#6,8d6,8d#6,2c6";
+      // Plenty more at: http://mines.lumpylumpy.com/Electronics/Computers/Software/Cpp/MFC/RingTones.RTTTL
+      mp3.playRTTTL(starwars, strlen_P(starwars));
+      delay(15000);
+
       mp3.setVolume(2);
       mp3.start("http://radioessen.cast.addradio.de/radioessen/simulcast/high/stream.mp3");
       led.changeAnimation(2, 0);

src/mp3.cpp

@@ -6,6 +6,7 @@
 #include "AudioFileSourcePROGMEM.h"
 #include "AudioFileSourceBuffer.h"
 #include "AudioGeneratorMP3.h"
+#include "AudioGeneratorRTTTL.h"
 #include "AudioOutputI2S.h"
 //#include "driver/gpio.h"
 //#include "driver/periph_ctrl.h"
@@ -84,6 +85,13 @@ void MP3::start_Progmem() {
   start();
 }
 
+void MP3::playRTTTL(const char* str, size_t len) {
+  rtttl = str;
+  rtttl_len = len;
+  volume = 2;
+  start();
+}
+
 void MP3::setVolume(int volume) {
   if (volume > 0 && volume <= 100) {
     this->volume = volume;
@@ -109,6 +117,7 @@ void MP3::mp3_decoder_task(void *pvParameters) {
 
 //  strcpy(titleStr, "loading...");
   if (fromProgmem) file = new AudioFileSourcePROGMEM(alarmsound, alarmsound_len);
+  else if (rtttl_len > 0) file = new AudioFileSourcePROGMEM( rtttl, rtttl_len );
   else file = new AudioFileSourceICYStream(URL);
   file->RegisterMetadataCB(MDCallback, (void*)"ICY");
   buff = new AudioFileSourceBuffer(file, preallocateBuffer, preallocateBufferSize);
@@ -118,7 +127,13 @@ void MP3::mp3_decoder_task(void *pvParameters) {
     out = new AudioOutputI2S(I2S_NUM_0, false);
     out->SetPinout(12, 13, 25);
   }
-  decoder = new AudioGeneratorMP3(preallocateCodec, preallocateCodecSize);
+  if (rtttl_len > 0) {
+    decoder = new AudioGeneratorRTTTL();
+    Serial.println(rtttl_len); Serial.println(FPSTR(rtttl));
+    rtttl_len = 0;
+  } else {
+    decoder = new AudioGeneratorMP3(preallocateCodec, preallocateCodecSize);
+  }
   decoder->RegisterStatusCB(StatusCallback, (void*)"mp3");
   decoder->begin(buff, out);
   if (volume > 0 && volume <= 100) {
@@ -143,6 +158,7 @@ void MP3::mp3_decoder_task(void *pvParameters) {
   strcpy(titleStr, "stopped");
 
   playing = false;
+  i2s_zero_dma_buffer(I2S_NUM_0);
 
   if (decoder) {
     decoder->stop();

src/mp3.h

@@ -1,6 +1,8 @@
 #ifndef _MP3_H
 #define _MP3_H
 
+#include <Arduino.h>
+
 #include <HTTPClient.h>
 #include <SD.h>
 #include "AudioFileSourceICYStream.h"
@@ -21,6 +23,7 @@ class MP3 {
     void start(void);
     void start(const char*);
     void start_Progmem();
+    void playRTTTL(const char *, size_t);
     void setVolume(int);
     int getVolume();
     bool playing = false;
@@ -28,6 +31,8 @@ class MP3 {
     bool volumeChanged = true;
     uint32_t getBuffFill(void);
     bool fromProgmem;
+    const char* rtttl PROGMEM;
+    size_t rtttl_len = (size_t)0;
   private:
     TaskHandle_t audioTaskHandle;
     void mp3_decoder_task(void*);