snapshot

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

@@ -0,0 +1,39 @@
+cmake_minimum_required(VERSION 3.20)
+
+# set the project name
+project(alac)
+set (CMAKE_CXX_STANDARD 11)
+set (DCMAKE_CXX_FLAGS "-Werror")
+
+include(FetchContent)
+option(BUILD_SHARED_LIBS "Build using shared libraries" OFF)
+
+# Build with arduino-fdk-aac
+FetchContent_Declare(codec-alac GIT_REPOSITORY "https://github.com/pschatzmann/codec-alac.git" GIT_TAG main )
+FetchContent_GetProperties(codec-alac)
+if(NOT codec-alac_POPULATED)
+    FetchContent_Populate(codec-alac)
+    add_subdirectory(${codec-alac_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}/codec-alac)
+endif()
+
+# provide audio-tools
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../../.. ${CMAKE_CURRENT_BINARY_DIR}/arduino-audio-tools )
+endif()
+
+# build sketch as executable
+set_source_files_properties(alac.ino PROPERTIES LANGUAGE CXX)
+add_executable (alac alac.ino)
+
+# set preprocessor defines
+target_compile_definitions(arduino_emulator PUBLIC -DDEFINE_MAIN)
+target_compile_definitions(alac PUBLIC -DARDUINO -DIS_DESKTOP)
+target_compile_options(alac PRIVATE -Wno-multichar)
+
+
+# set compile optioins
+target_compile_options(arduino-audio-tools INTERFACE -Wno-inconsistent-missing-override)
+
+# specify libraries
+target_link_libraries(alac PRIVATE codec-alac arduino_emulator arduino-audio-tools )
+

libraries/audio-tools/tests-cmake/codec/alac/alac.ino

@@ -0,0 +1,57 @@
+/**
+ * @file test-codec-alac.ino
+ * @author Phil Schatzmann
+ * @brief generate sine wave -> encoder -> decoder -> audiokit (i2s)
+ * @version 0.1
+ * 
+ * @copyright Copyright (c) 2025
+ * 
+ */
+#include "AudioTools.h"
+#include "AudioTools/AudioCodecs/CodecALAC.h"
+
+//SET_LOOP_TASK_STACK_SIZE(16*1024); // 16KB
+
+AudioInfo info(44100, 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
+CsvOutput<int16_t> out(Serial);
+EncoderALAC enc_alac;
+DecoderALAC dec_alac;
+CodecNOP dec_nop;
+EncodedAudioStream decoder(&out, &dec_alac); // encode and write
+EncodedAudioStream encoder(&decoder, &enc_alac); // encode and write
+StreamCopy copier(encoder, sound);     
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Debug);
+
+  // start Output
+  Serial.println("starting Output...");
+  auto cfgi = out.defaultConfig(TX_MODE);
+  cfgi.copyFrom(info);
+  out.begin(cfgi);
+
+  // Setup sine wave
+  sineWave.begin(info, N_B4);
+
+  // start encoder
+  encoder.begin(info);
+
+  // optionally copy config from encoder to decoder
+  // since decoder already has audio info and frames
+  //dec_alac.setCodecConfig(enc_alac.config());
+  //dec_alac.setCodecConfig(enc_alac.binaryConfig());
+
+  // start decoder
+  decoder.begin(info);
+  
+
+  Serial.println("Test started...");
+}
+
+
+void loop() { 
+  copier.copy();
+}