snapshot

libraries/audio-tools/tests-cmake/codec/container-m4a-player/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.20)
+
+# set the project name
+project(container-m4a-player)
+set (CMAKE_CXX_STANDARD 11)
+set (DCMAKE_CXX_FLAGS "-Werror")
+
+include(FetchContent)
+option(BUILD_SHARED_LIBS "Build using shared libraries" OFF)
+
+# Build with alac
+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} ${CMAKE_CURRENT_BINARY_DIR}/codec-alac)
+endif()
+
+# Build with libhelix
+FetchContent_Declare(helix GIT_REPOSITORY "https://github.com/pschatzmann/arduino-libhelix.git" GIT_TAG main )
+FetchContent_GetProperties(helix)
+if(NOT helix_POPULATED)
+    FetchContent_Populate(helix)
+    add_subdirectory(${helix_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}/helix)
+endif()
+
+
+# provide audio-tools
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../../.. ${CMAKE_CURRENT_BINARY_DIR}/arduino-audio-tools )
+endif()
+
+# build sketch as executable
+set_source_files_properties(container-m4a-player.ino PROPERTIES LANGUAGE CXX)
+add_executable (container-m4a-player container-m4a-player.ino)
+
+# set preprocessor defines
+target_compile_definitions(arduino_emulator PUBLIC -DDEFINE_MAIN -DUSE_FILESYSTEM)
+target_compile_definitions(container-m4a-player PUBLIC -DARDUINO -DIS_DESKTOP)
+target_compile_options(container-m4a-player PRIVATE -Wno-multichar)
+
+
+# set compile optioins
+target_compile_options(arduino-audio-tools INTERFACE -Wno-inconsistent-missing-override)
+#target_compile_definitions(arduino-audio-tools INTERFACE -DUSE_ALLOCATOR)
+
+# specify libraries
+target_link_libraries(container-m4a-player PRIVATE 
+    codec-alac
+    arduino_emulator 
+    arduino_helix 
+    arduino-audio-tools)

libraries/audio-tools/tests-cmake/codec/container-m4a-player/container-m4a-player.ino

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+/**
+ * @file container-m4a-player.ino
+ * @author Phil Schatzmann
+ * @brief Player with M4A files using a single MultiDecoder. However
+ * I recommend to use 2 separate multi decoders one for the player and 
+ * a separate one for the M4A container.
+ * @version 0.1
+ * 
+ * @copyright Copyright (c) 2025
+ * 
+ */
+//#include "SD.h"
+#include "AudioTools.h"
+#include "AudioTools/AudioCodecs/CodecALAC.h"
+#include "AudioTools/AudioCodecs/CodecMP3Helix.h"
+#include "AudioTools/AudioCodecs/CodecAACHelix.h"
+#include "AudioTools/AudioCodecs/ContainerM4A.h"
+#include "AudioTools/AudioCodecs/MultiDecoder.h"
+#include "AudioTools/AudioCodecs/M4AFileSampleSizeBuffer.h"
+#include "AudioTools/Disk/AudioSourceSD.h"
+#include "WiFi.h"
+#include "AudioTools/Communication/RedisBuffer.h"
+
+const char *startFilePath="/home/pschatzmann/Music/m4a";
+const char* ext="m4a";
+AudioSourceSD source(startFilePath, ext);
+CsvOutput<int16_t> out(Serial);
+MultiDecoder multi_decoder;
+ContainerM4A dec_m4a(multi_decoder);
+AACDecoderHelix dec_aac;
+MP3DecoderHelix dec_mp3;
+DecoderALAC dec_alac;
+AudioPlayer player(source, out, multi_decoder);
+// Option 1 - using the played file
+//M4AFileSampleSizeBuffer sizes_buffer(player, dec_m4a);
+// Option 2 - using a file to buffer
+//File buffer_file;
+//RingBufferFile<File,stsz_sample_size_t> file_buffer(0);
+// Option 3 - using redis 
+//WiFiClient client;
+//RedisBuffer<stsz_sample_size_t> redis(client,"m4a-buffer1",0, 1024, 0);
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+  // setup multi decoder
+  multi_decoder.addDecoder(dec_m4a, "audio/m4a");
+  multi_decoder.addDecoder(dec_alac,"audio/alac"); 
+  multi_decoder.addDecoder(dec_aac,"audio/aac"); 
+  multi_decoder.addDecoder(dec_mp3,"audio/mp3"); 
+
+  // Option 1
+  //dec_m4a.setSampleSizesBuffer(sizes_buffer);
+
+  // Option 2
+  // set custom buffer to optimize the memory usage
+  // buffer_file = SD.open("/home/pschatzmann/tmp.tmp", O_RDWR | O_CREAT);
+  // file_buffer.begin(buffer_file);
+  // dec_m4a.setSampleSizesBuffer(file_buffer);
+
+  // Option 3
+  // WiFi.begin("ssid","pwd");
+  // while ( WiFi.status() != WL_CONNECTED) {
+  //   Serial.print(".");
+  // }
+  // if (!client.connect(IPAddress(192,168,1,10),6379)){
+  //   Serial.println("redis error");
+  //   stop();
+  // }
+  // dec_m4a.setSampleSizesBuffer(redis);
+ 
+  // setup output
+  auto cfg = out.defaultConfig(TX_MODE);
+  out.begin(cfg);
+
+  //source.setTimeoutAutoNext(5000000);
+  // setup player
+  player.begin();
+}
+
+void loop() {
+  player.copy();
+}