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libraries/audio-tools/tests-cmake/codec/wav/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.20)
+
+# set the project name
+project(wav-test)
+set (CMAKE_CXX_STANDARD 11)
+set (DCMAKE_CXX_FLAGS "-Werror")
+
+# add_compile_options(-Wstack-usage=1024)
+
+include(FetchContent)
+
+# 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} ${CMAKE_CURRENT_BINARY_DIR}/portaudio)
+endif()
+
+# Build with arduino-adpcm
+FetchContent_Declare(adpcm_ffmpeg GIT_REPOSITORY "https://github.com/pschatzmann/adpcm" GIT_TAG main )
+FetchContent_GetProperties(adpcm_ffmpeg)
+if(NOT adpcm_ffmpeg)
+    FetchContent_Populate(adpcm_ffmpeg)
+    add_subdirectory(${adpcm_ffmpeg_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}/adpcm)
+endif()
+
+# Build with arduino-audio-tools
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../../.. ${CMAKE_CURRENT_BINARY_DIR}/arduino-audio-tools )
+endif()
+
+# build sketch as executable
+add_executable (wav-test wav.cpp)
+
+# set preprocessor defines
+target_compile_definitions(wav-test PUBLIC -DARDUINO -DUSE_PORTAUDIO -DIS_DESKTOP)
+
+# specify libraries
+target_link_libraries(wav-test portaudio arduino_emulator adpcm_ffmpeg arduino-audio-tools)
+

libraries/audio-tools/tests-cmake/codec/wav/wav.cpp

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+/**
+ * @file test-codec-adpcm.ino
+ * @author Phil Schatzmann
+ * @brief generate sine wave -> encoder -> decoder -> PortAudioStream
+ * We can select between PCM and ADPCM
+ * @version 0.1
+ * @date 2022-04-30
+ * 
+ * @copyright Copyright (c) 2022
+ * 
+ */
+#include "AudioTools.h"
+#include "AudioTools/AudioCodecs/CodecWAV.h" 
+#include "AudioTools/AudioCodecs/CodecADPCM.h"
+#include "AudioTools/AudioLibs/PortAudioStream.h"
+
+#define USE_ADPCM true
+
+AudioInfo info(16000, 2, 16);
+SineWaveGenerator<int16_t> sineWave( 32000);  // subclass of SoundGenerator with max amplitude of 32000
+GeneratedSoundStream<int16_t> sound( sineWave); // Stream generated from sine wave
+//I2SStream out; 
+//PortAudioStream out; 
+CsvOutput<int16_t> out(Serial);
+#if USE_ADPCM
+ADPCMDecoder adpcm_decoder(AV_CODEC_ID_ADPCM_IMA_WAV); 
+ADPCMEncoder adpcm_encoder(AV_CODEC_ID_ADPCM_IMA_WAV); 
+EncodedAudioStream decoder(&out, new WAVDecoder(adpcm_decoder, AudioFormat::ADPCM)); // encode and write
+EncodedAudioStream encoder(&decoder, new WAVEncoder(adpcm_encoder, AudioFormat::ADPCM)); // encode and write
+#else
+EncodedAudioStream decoder(&out, new WAVDecoder()); // encode and write
+EncodedAudioStream encoder(&decoder, new WAVEncoder()); // encode and write
+#endif
+StreamCopy copier(encoder, sound);     
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Debug);
+
+  // start I2S
+  Serial.println("starting Output...");
+  auto cfgi = out.defaultConfig(TX_MODE);
+  cfgi.copyFrom(info);
+  out.begin(cfgi);
+
+  // Setup sine wave
+  auto cfgs = sineWave.defaultConfig();
+  cfgs.copyFrom(info);
+  sineWave.begin(info, N_B4);
+
+  // start decoder
+  decoder.begin(info);
+
+  // start encoder
+  encoder.begin(info);
+
+  Serial.println("Test started...");
+}
+
+
+void loop() { 
+  copier.copy();
+}