snapshot

libraries/audio-tools/tests-cmake/fft-effect/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.20)
+
+
+# set the project name
+project(fft-effect)
+set (CMAKE_CXX_STANDARD 11)
+set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0 -ldl -lpthread -lm -fno-omit-frame-pointer -fsanitize=address")
+set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0 -ldl -lpthread -lm -fno-omit-frame-pointer -fsanitize=address")
+set (CMAKE_LINKER_FLAGS_DEBUG "${CMAKE_LINKER_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address")
+
+# Emulator is not necessary for -DIS_MIN_DESKTOP
+set(ADD_ARDUINO_EMULATOR OFF CACHE BOOL "Add Arduino Emulator Library") 
+set(ADD_PORTAUDIO OFF CACHE BOOL "No Portaudio") 
+
+# Build with arduino-audio-tools
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../.. ${CMAKE_CURRENT_BINARY_DIR}/arduino-audio-tools )
+endif()
+
+# Download miniaudio.h
+file(DOWNLOAD https://raw.githubusercontent.com/mackron/miniaudio/master/miniaudio.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/miniaudio.h)
+
+
+# build sketch as executable
+add_executable (fft-effect fft-effect.cpp)
+
+# set preprocessor defines
+target_compile_definitions(fft-effect PUBLIC -DIS_MIN_DESKTOP)
+
+# specify libraries
+target_link_libraries(fft-effect arduino-audio-tools)
+
+# access to miniaudio in sketch directory
+target_include_directories(fft-effect PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})

libraries/audio-tools/tests-cmake/fft-effect/fft-effect.cpp

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+#include "AudioTools.h"
+#include "AudioTools/AudioLibs/MiniAudioStream.h"
+#include "AudioTools/AudioLibs/FFTEffects.h"
+#include "AudioTools/AudioLibs/Desktop/File.h"
+
+AudioInfo info(16000, 2, 16);
+MiniAudioStream out; // final output of decoded stream
+FFTPitchShift effect(out);
+//FFTNop effect(out);
+//FFTWhisper effect(out);
+//FFTRobotize effect(out);
+WAVDecoder wav;
+EncodedAudioOutput decoder(&effect, &wav); // Decoding stream
+StreamCopy copier; 
+File audioFile;
+
+void setup(){
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);  
+
+  auto config = out.defaultConfig(TX_MODE);
+  config.copyFrom(info);
+  out.begin(config);
+
+  auto econfig = effect.defaultConfig();
+  econfig.copyFrom(info);
+  econfig.shift = -20;
+  effect.begin(econfig);
+
+  // setup file: must be in current directory
+  audioFile.open("hal1600.wav");
+
+  // setup I2S based on sampling rate provided by decoder
+  decoder.begin();
+
+  // begin copy
+  copier.begin(decoder, audioFile);
+
+}
+
+void loop(){
+  if (!copier.copy()) {
+    delay(5000);
+    exit(0);
+  }
+}