snapshot

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

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+cmake_minimum_required(VERSION 3.20)
+
+# set the project name
+project(resample_ext)
+set (CMAKE_CXX_STANDARD 11)
+set (DCMAKE_CXX_FLAGS "-Werror")
+# add_compile_options(-Wstack-usage=1024)
+
+# 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 (resample_ext resample_ext.cpp)
+
+# set preprocessor defines
+target_compile_definitions(resample_ext PUBLIC -DIS_DESKTOP)
+
+# specify libraries
+target_link_libraries(resample_ext arduino_emulator arduino-audio-tools)
+

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

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+#include "AudioTools.h"
+
+AudioInfo info(44100, 1, 16);
+// subclass of SoundGenerator with max amplitude of 32000
+SineWaveGenerator<int16_t> sineWave(32000);
+// Stream generated from sine wave
+GeneratedSoundStream<int16_t> sound(sineWave);
+CsvOutput<int16_t> out(Serial);
+//ResampleStreamT<LinearInterpolaror> resample(out);
+ResampleStreamT<BSplineInterpolator> resample(sound);
+StreamCopy copier(out, resample);  // copies sound to out
+
+// Arduino Setup
+void setup(void) {
+  // Open Serial
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // define resample
+  auto rcfg = resample.defaultConfig();
+  rcfg.copyFrom(info);
+  rcfg.step_size = 0.5;
+  resample.begin(rcfg);
+
+  // Define CSV Output
+  out.begin(info);
+
+  // Setup sine wave
+  sineWave.begin(info, N_B4);
+  Serial.println("started...");
+}
+
+// Arduino loop - copy sound to out
+void loop() { copier.copy(); }