Added OpenAI Speech example

examples/OpenAI_Speech/readme.md

+# platformio.ini - example for: https://www.seeedstudio.com/XIAO-ESP32S3-p-5627.html
+
+[env:seeed_xiao_esp32s3]
+platform = espressif32
+board = seeed_xiao_esp32s3
+framework = arduino
+monitor_speed = 115200
+build_flags = 
+	-Wall
+	-Wextra
+	-DCORE_DEBUG_LEVEL=3
+	-DBOARD_HAS_PSRAM
+    -DAUDIO_LOG
+	-DARDUINO_RUNNING_CORE=1       ; Arduino Runs On Core (setup, loop)
+	-DARDUINO_EVENT_RUNNING_CORE=1 ; Events Run On Core
+lib_deps = 
+	https://github.com/schreibfaul1/ESP32-audioI2S.git#f2f1f5bcce74523dfc59e5844ba5878ed69c040a
+
+
+# main.cpp - using xTask example:
+
+``
+#include <Arduino.h>
+#include "SPI.h"
+#include <WiFi.h>
+#include <WiFiMulti.h>
+#include "Audio.h"
+
+// WiFi credentials
+#define WIFI_SSID "<YOUR_WIFI_SSID>"
+#define PASSWORD "<YOUR_WIFI_PASSWORD>"
+#define OPENAI_API_KEY "<YOUR_OPENAI_API_KEY>"
+
+// Configure I2S pins
+#define I2S_LRC D1
+#define I2S_DOUT D2
+#define I2S_BCLK D3
+#define I2S_MCLK 0
+
+// Vars
+bool isWIFIConnected;
+
+String result = "Added OpenAI Text to speech API support";
+
+// Inits
+WiFiMulti wifiMulti;
+TaskHandle_t playaudio_handle;
+QueueHandle_t audioQueue;
+Audio audio;
+
+// Declaration
+void audio_info(const char *info);
+void wifiConnect(void *pvParameters);
+void playaudio(void *pvParameters);
+
+// Default
+void setup() {
+    Serial.begin(115200);
+    isWIFIConnected = false;
+
+    // Create queue
+    audioQueue = xQueueCreate(1, sizeof(int));
+    if (audioQueue == NULL) {
+        Serial.println("Failed to create audioQueue");
+        while(1);
+    }
+
+    // Create tasks
+    xTaskCreate(wifiConnect, "wifi_Connect", 4096, NULL, 0, NULL);
+    delay(500);
+    xTaskCreate(playaudio, "playaudio", 1024 * 8, NULL, 3, &playaudio_handle);
+}
+
+void loop(void) {
+    audio.loop();
+}
+
+void audio_info(const char *info) {
+    Serial.print("audio_info: ");
+    Serial.println(info);
+}
+
+void wifiConnect(void *pvParameters) {
+    while(1) {
+        if (!isWIFIConnected) {
+            wifiMulti.addAP(WIFI_SSID, PASSWORD);
+            Serial.println("Connecting to WiFi...");
+            while (wifiMulti.run() != WL_CONNECTED) {
+                vTaskDelay(500);
+            }
+            Serial.print("Connected to WiFi\nIP: ");
+            Serial.println(WiFi.localIP());
+            isWIFIConnected = true;
+
+            Serial.println("Sending result...");
+            int eventMessage;
+            if (xQueueSend(audioQueue, &eventMessage, 0) != pdPASS) {
+                Serial.println("Failed to send result to queue");
+            }
+        } else {
+            vTaskDelay(1000 / portTICK_PERIOD_MS);
+        }
+    }
+}
+
+void playaudio(void *pvParameters) {
+    while(1) {
+        if (isWIFIConnected && audioQueue != 0) {
+            int eventMessage;
+            Serial.println("Waiting for result...");
+            if (xQueueReceive(audioQueue, &eventMessage, portMAX_DELAY) == pdPASS) {
+                Serial.print("Received result: ");
+                Serial.println(result);
+
+                // Speech
+                audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT, -1);
+                audio.setVolume(15); // 0...21
+                audio.openai_speech(OPENAI_API_KEY, "tts-1", result, "shimmer", "mp3", "1");
+            }
+        } else {
+            vTaskDelay(1000 / portTICK_PERIOD_MS);
+        }
+    }
+}
+``
+---
+
+# console output example:
+
+--- Terminal on /dev/ttyACM0 | 115200 8-N-1
+--- Available filters and text transformations: colorize, debug, default, direct, esp32_exception_decoder, hexlify, log2file, nocontrol, printable, send_on_enter, time
+--- More details at https://bit.ly/pio-monitor-filters
+--- Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H
+[  3911][I][WiFiMulti.cpp:114] run(): [WIFI] scan done
+[  3911][I][WiFiMulti.cpp:119] run(): [WIFI] 15 networks found
+[  3911][I][WiFiMulti.cpp:160] run(): [WIFI] Connecting BSSID: 26:AD:69:C2:AB:E8 SSID: OpwnSS Channel: 11 (-38)
+[  4000][I][WiFiMulti.cpp:174] run(): [WIFI] Connecting done.
+Connected to WiFi
+IP: 192.168.86.23
+Sending result...
+Waiting for result...
+Received result: Added OpenAI Text to speech API support
+audio_info: Connect to new host: "api.openai.com"
+audio_info: PSRAM found, inputBufferSize: 638965 bytes
+[  4781][I][Audio.cpp:5248] ts_parsePacket(): parseTS reset
+audio_info: buffers freed, free Heap: 241976 bytes
+audio_info: connect to api.openai.com on port 443 path /v1/audio/speech
+audio_info: SSL has been established in 1108 ms, free Heap: 200804 bytes
+Waiting for result...
+[  6707][I][Audio.cpp:3949] parseContentType(): ContentType audio/mpeg, format is mp3
+audio_info: MP3Decoder has been initialized, free Heap: 201136 bytes , free stack 5648 DWORDs
+[  6711][I][Audio.cpp:3795] parseHttpResponseHeader(): Switch to DATA, metaint is 0
+audio_info: stream ready
+audio_info: syncword found at pos 0
+audio_info: Channels: 1
+audio_info: SampleRate: 24000
+audio_info: BitsPerSample: 16
+audio_info: BitRate: 160000
+audio_info: slow stream, dropouts are possible
+audio_info: slow stream, dropouts are possible
+audio_info: End of Stream.
\ No newline at end of file

examples/OpenAI_Speech/src/main.cpp

+#include <Arduino.h>
+#include "SPI.h"
+#include <WiFi.h>
+#include <WiFiMulti.h>
+#include "Audio.h"
+
+// WiFi credentials
+#define WIFI_SSID "<YOUR_WIFI_SSID>"
+#define PASSWORD "<YOUR_WIFI_PASSWORD>"
+#define OPENAI_API_KEY "<YOUR_OPENAI_API_KEY>" // https://platform.openai.com/api-keys
+
+// Configure I2S pins
+#define I2S_LRC D1
+#define I2S_DOUT D2
+#define I2S_BCLK D3
+#define I2S_MCLK 0
+
+// Inits
+WiFiMulti wifiMulti;
+Audio audio;
+
+// Declaration
+void audio_info(const char *info);
+
+// Default
+void setup() {
+    Serial.begin(115200);
+    
+    // Wifi
+    wifiMulti.addAP(WIFI_SSID, PASSWORD);
+    Serial.println("Connecting to WiFi...");
+    while (wifiMulti.run() != WL_CONNECTED) {
+        delay(500);
+    }
+    Serial.print("Connected to WiFi\nIP: ");
+    Serial.println(WiFi.localIP());
+
+    delay(500);
+
+    // Speech
+    audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT, -1);
+    audio.setVolume(15); // 0...21
+    audio.openai_speech(OPENAI_API_KEY, "tts-1", "Added OpenAI Text to speech API support", "shimmer", "mp3", "1");
+}
+
+void loop(void) {
+    audio.loop();
+}
+
+void audio_info(const char *info) {
+    Serial.print("audio_info: ");
+    Serial.println(info);
+}
\ No newline at end of file