snapshot

2026-02-12 21:00:02 -08:00
parent 77f8236347
commit 8bdbf227ca
1141 changed files with 1010880 additions and 2 deletions
--- a/libraries/audio-tools/examples/examples-audiokit/streams-audiokit-effects-audiokit/streams-audiokit-effects-audiokit.ino
+++ b/libraries/audio-tools/examples/examples-audiokit/streams-audiokit-effects-audiokit/streams-audiokit-effects-audiokit.ino
@@ -0,0 +1,157 @@
+/**
+ * @file audiokit-effects-audiokit.ino
+ * @author Phil Schatzmann
+ * @brief Some Guitar Effects that can be controlled via a Web Gui. 
+ * @version 0.1
+ * @date 2022-10-14
+ * 
+ * @copyright Copyright (c) 2022
+ * 
+ */ 
+#include <ArduinoJson.h>  // https://arduinojson.org/
+#include "HttpServer.h" // https://github.com/pschatzmann/TinyHttp
+#include "AudioTools.h" // https://github.com/pschatzmann/arduino-audio-tools.git
+#include "AudioTools/AudioLibs/AudioBoardStream.h" // https://github.com/pschatzmann/arduino-audio-driver.git
+
+// Server
+WiFiServer wifi;
+HttpServer server(wifi);
+const char *ssid = "SSID";
+const char *password = "PASSWORD";
+
+// Audio Format
+const int sample_rate = 44100;
+const int channels = 1;
+const int bits_per_sample = 16;
+
+// Effects control input
+float volumeControl = 0.1;
+int16_t clipThreashold = 0;
+float fuzzEffectValue = 0;
+int16_t fuzzMaxValue = 0;
+int16_t tremoloDuration = 0;
+float tremoloDepth = 0;
+
+// Effects
+Boost boost(volumeControl);
+Distortion distortion(clipThreashold);
+Fuzz fuzz(fuzzEffectValue);
+Tremolo tremolo(tremoloDuration, tremoloDepth, sample_rate);
+
+// Audio
+AudioBoardStream kit(AudioKitEs8388V1); // Access I2S as stream
+AudioEffectStream effects(kit); // input from kit
+StreamCopy copier(kit, effects); // copy effects to kit
+
+// Update values in effects
+void updateValues(){
+  // update values in controls
+  boost.setVolume(volumeControl);
+  boost.setActive(volumeControl>0);
+  distortion.setClipThreashold(clipThreashold);
+  distortion.setActive(clipThreashold>0);
+  fuzz.setFuzzEffectValue(fuzzEffectValue);
+  fuzz.setMaxOut(fuzzMaxValue);
+  fuzz.setActive(fuzzEffectValue>0);
+  tremolo.setDepth(tremoloDepth);
+  tremolo.setDuration(tremoloDuration);
+  tremolo.setActive(tremoloDuration>0);
+}
+
+// provide JSON as webservice
+void getJson(HttpServer * server, const char*requestPath, HttpRequestHandlerLine * hl) {
+  auto parameters2Json = [](Stream & out) {
+    DynamicJsonDocument doc(1024);
+    doc["volumeControl"]["value"] = volumeControl;
+    doc["volumeControl"]["min"] = 0;
+    doc["volumeControl"]["max"] = 1;
+    doc["volumeControl"]["step"] = 0.1;
+    doc["clipThreashold"]["value"]   = clipThreashold;
+    doc["clipThreashold"]["min"] = 0;
+    doc["clipThreashold"]["max"] = 6000;
+    doc["clipThreashold"]["step"] = 100;
+    doc["fuzzEffectValue"]["value"] = fuzzEffectValue;
+    doc["fuzzEffectValue"]["min"] = 0;
+    doc["fuzzEffectValue"]["max"] = 10;
+    doc["fuzzEffectValue"]["step"] = 0.1;
+    doc["fuzzMaxValue"]["value"] = fuzzMaxValue;
+    doc["fuzzMaxValue"]["min"] = 0;
+    doc["fuzzMaxValue"]["max"] = 32200;
+    doc["fuzzMaxValue"]["step"] = 1;
+    doc["tremoloDuration"]["value"] = tremoloDuration;
+    doc["tremoloDuration"]["min"] = 0;
+    doc["tremoloDuration"]["max"] = 2000;
+    doc["tremoloDuration"]["step"] = 1;
+    doc["tremoloDepth"]["value"] = tremoloDepth;
+    doc["tremoloDepth"]["min"] = 0;
+    doc["tremoloDepth"]["max"] = 100;
+    doc["tremoloDepth"]["step"] = 1;
+    serializeJson(doc, out);
+  };
+
+  // provide data as json using callback
+  server->reply("text/json", parameters2Json, 200);
+};
+
+
+// Poroces Posted Json
+void postJson(HttpServer *server, const char*requestPath, HttpRequestHandlerLine *hl) {
+  // post json to server
+  DynamicJsonDocument doc(1024);
+  deserializeJson(doc, server->client());
+  volumeControl = doc["volumeControl"];
+  clipThreashold = doc["clipThreashold"];
+  fuzzEffectValue = doc["fuzzEffectValue"];
+  fuzzMaxValue = doc["fuzzMaxValue"];
+  tremoloDuration = doc["tremoloDuration"];
+  tremoloDepth = doc["tremoloDepth"];
+
+  // update values in controls
+  updateValues();
+
+  server->reply("text/json", "{}", 200);
+  char msg[120];
+  snprintf(msg, 120, "====> updated values %f %d %f %d %d %f", volumeControl, clipThreashold, fuzzEffectValue, tremoloDuration, tremoloDepth);
+  Serial.println(msg);
+}
+
+// Arduino Setup
+void setup(void) {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // Setup Server
+  static HttpTunnel tunnel_url("https://pschatzmann.github.io/TinyHttp/app/guitar-effects.html");
+  server.on("/", T_GET, tunnel_url);
+  server.on("/service", T_GET, getJson);
+  server.on("/service", T_POST, postJson);
+  server.begin(80, ssid, password);
+  server.setNoConnectDelay(0);
+
+  // Setup Kit
+  auto cfg = kit.defaultConfig(RXTX_MODE);
+  cfg.sd_active = false;
+  cfg.input_device = ADC_INPUT_LINE2;
+  cfg.sample_rate = sample_rate;
+  cfg.channels = channels;
+  // minimize lag
+  cfg.buffer_count = 2;
+  cfg.buffer_size = 256;
+  kit.begin(cfg);
+  kit.setVolume(1.0);
+
+  // setup effects
+  effects.addEffect(boost);
+  effects.addEffect(distortion);
+  effects.addEffect(fuzz);
+  effects.addEffect(tremolo);
+  effects.begin(cfg);
+
+  updateValues();
+}
+
+// Arduino loop - copy data
+void loop() {
+  copier.copy();
+  server.copy();
+}