snapshot

libraries/audio-tools/tests-cmake/effects/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.20)
+
+# set the project name
+project(effects)
+set (CMAKE_CXX_STANDARD 11)
+set (DCMAKE_CXX_FLAGS "-Werror")
+
+# add_compile_options(-Wstack-usage=1024)
+
+# Add Portaduio for desktop build
+add_compile_options(-DIS_DESKTOP)
+FetchContent_Declare(portaudio GIT_REPOSITORY "https://github.com/PortAudio/portaudio.git" GIT_TAG v19.7.0 )
+FetchContent_GetProperties(portaudio)
+if(NOT portaudio_POPULATED)
+    FetchContent_Populate(portaudio)
+    add_subdirectory(${portaudio_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}/portaudio)
+endif()
+
+# Build with arduino-audio-tools
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../.. ${CMAKE_CURRENT_BINARY_DIR}/arduino-audio-tools )
+endif()
+
+
+# build sketch as executable
+add_executable (effects effects.cpp)
+# set preprocessor defines
+target_compile_definitions(effects PUBLIC -DARDUINO -DIS_DESKTOP)
+
+# specify libraries
+target_link_libraries(effects arduino_emulator arduino-audio-tools portaudio)
+

libraries/audio-tools/tests-cmake/effects/effects.cpp

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+// Simple wrapper for Arduino sketch to compilable with cpp in cmake
+#include "Arduino.h"
+#include "AudioTools.h"
+#include "AudioTools/AudioLibs/PortAudioStream.h"
+
+PortAudioStream out;
+SineWaveGenerator<int16_t> sine;
+AudioEffects<SineWaveGenerator<int16_t>> effects(sine);
+ADSRGain adsr(0.0001,0.0001, 0.9 , 0.0002);
+GeneratedSoundStream<int16_t> in(effects); 
+StreamCopy copier(out, in); 
+uint64_t timeout=0;
+float freq = N_C4;
+
+
+void setup() {
+  Serial.begin(115200);
+  AudioLogger::instance().begin(Serial,AudioLogger::Warning);
+
+  // setup effects
+  effects.addEffect(adsr);
+
+  // Setup output
+  auto cfg = out.defaultConfig();
+  cfg.channels = 1;
+  cfg.bits_per_sample = 16;
+  cfg.sample_rate = 44100;
+  out.begin(cfg);
+
+  // Setup sound generation based on AudioKit settins
+  effects.begin(cfg);
+  sine.begin(cfg, 0);
+  in.begin(cfg);
+  sine.setFrequency(freq);
+}
+
+
+void loop() {
+  // simulate key press
+  if (millis()>timeout){
+    sine.setFrequency(freq);
+    adsr.keyOn();
+    timeout = millis()+3000;
+  }
+  // simulate key release
+  if (millis()>timeout+1000){
+    sine.setFrequency(freq);
+    adsr.keyOff();
+  }
+  // output audio
+  copier.copy();
+}
+