FLITE for audiokit

Author: pschatzmann

examples/examples-stream/streams-flite-audiokit/README.md

@@ -0,0 +1,9 @@
+# Using FLITE Speach to Text
+
+I am providing a simple sketch which generates sound data with the Flite text to speach engine.
+You need to install https://github.com/pschatzmann/arduino-flite
+
+The output goes to a ‘AI Thinker Audio Kit’.
+
+<img src="https://pschatzmann.github.io/arduino-audio-tools/resources/audio-toolkit.png" alt="Audio Kit" />
+

examples/examples-stream/streams-flite-audiokit/streams-flite-audiokit.ino

@@ -0,0 +1,32 @@
+/**
+   @file streams-flite-audiokit.ino
+
+   @author Phil Schatzmann
+   @copyright GPLv3
+
+*/
+
+#include "flite_arduino.h"
+#include "AudioTools.h"
+#include "AudioDevices/ESP32AudioKit/AudioKit.h"
+
+using namespace audio_tools;
+
+AudioKitStream kit;
+Flite flite(kit);
+
+const char* alice = "Hallo my name is FLITE";
+
+void setup(){
+  Serial.begin(115200);
+  auto cfg = kit.defaultConfig();
+  cfg.bits_per_sample = 16;
+  cfg.channels = 1;
+  cfg.sample_rate = 8000;
+  kit.begin(cfg);
+  
+  flite.say(alice);
+}
+
+void loop() {
+}

examples/examples-webserver/streams-flite-webserver_wav/README.md

@@ -1,4 +1,4 @@
-# Using SAM Speach to Text
+# Using FLITE Speach to Text
 
 I am providing a simple sketch which generates sound data with the Flite text to speach engine.
 You need to install https://github.com/pschatzmann/arduino-flite

src/AudioDevices/ESP32AudioKit/AudioKit.h

@@ -358,7 +358,7 @@ static AudioKitStream *pt_AudioKitStream = nullptr;
  * @brief ESP32 Audio Kit using the ESP8388 DAC and ADC
  *
  */
-class AudioKitStream : public AudioStream {
+class AudioKitStream : public AudioStreamX {
 public:
   /// Default Constructor
   AudioKitStream() { pt_AudioKitStream = this; };
@@ -462,6 +462,8 @@ class AudioKitStream : public AudioStream {
       LOGE("start failed");
       result = false;
     }
+
+    active = result;
     return result;
   }
 
@@ -472,35 +474,34 @@ class AudioKitStream : public AudioStream {
     LOGI(LOG_METHOD);
     setPAPower(false);
     stop(module_value);
+    active = false;
   }
 
   /// Writes the audio data to I2S
   virtual size_t write(const uint8_t *buffer, size_t size) {
     LOGD(LOG_METHOD);
+    if (!active){
+      LOGE("you did not start the AudioKitStream with begin");
+      return 0;
+    }
     return i2s.writeBytes(buffer, size);
   }
 
   /// Reads the audio data
   virtual size_t readBytes(uint8_t *data, size_t length) override {
+    if (!active){
+      LOGE("you did not start the AudioKitStream with begin");
+      return 0;
+    }
     return i2s.readBytes(data, length);
   }
 
-  /// not supported
-  virtual size_t write(uint8_t) { return 0; }
-
-  /// not supported
-  virtual int read() { return -1; }
-
-  /// not supported
-  virtual int peek() { return -1; }
-
   /// Provides the available audio data
   virtual int available() override { return i2s.available(); }
 
   /// Provides the available audio data
   virtual int availableForWrite() override { return i2s.availableForWrite(); }
 
-  void flush() override {}
 
   /**
    * @brief Reconfigure audio information
@@ -750,9 +751,10 @@ class AudioKitStream : public AudioStream {
   ConfigES8388 cfg;
   es_module_t module_value;
   I2SBase i2s;
-  bool actualPower;
   AudioActions actions;
   int actionVolume = 0;
+  bool actualPower;
+  bool active;
 
   /// init i2c with different possible pins
   esp_err_t i2c_init(void) {