snapshot

libraries/audio-tools/tests-cmake/codec/mp3-lame/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.20)
+
+# set the project name
+project(mp3-lame)
+set (CMAKE_CXX_STANDARD 11)
+set (DCMAKE_CXX_FLAGS "-Werror")
+#if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+#    set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address")
+#    set (CMAKE_LINKER_FLAGS_DEBUG "${CMAKE_LINKER_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address")
+#endif()
+
+include(FetchContent)
+
+# Build with arduino-audio-tools
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../../.. ${CMAKE_CURRENT_BINARY_DIR}/arduino-audio-tools )
+endif()
+
+# Build with liblame 
+FetchContent_Declare(arduino_liblame GIT_REPOSITORY "https://github.com/pschatzmann/arduino-liblame.git" GIT_TAG main )
+FetchContent_GetProperties(arduino_liblame)
+if(NOT arduino_liblame_POPULATED)
+    FetchContent_Populate(arduino_liblame)
+    add_subdirectory(${arduino_liblame_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}/arduino_liblame)
+endif()
+
+# build sketch as executable
+add_executable (mp3-lame mp3-lame.cpp)
+# set preprocessor defines
+target_compile_definitions(mp3-lame PUBLIC -DARDUINO -DUSE_PORTAUDIO -DIS_DESKTOP)
+
+# specify libraries
+target_link_libraries(mp3-lame portaudio arduino_emulator arduino_liblame arduino-audio-tools)
+

libraries/audio-tools/tests-cmake/codec/mp3-lame/mp3-lame.cpp

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+// Simple wrapper for Arduino sketch to compilable with cpp in cmake
+#include "Arduino.h"
+#include "AudioTools.h"
+#include "AudioTools/AudioCodecs/CodecMP3LAME.h"
+//#include <stdlib.h>  // for rand
+
+HexDumpOutput out(Serial);
+MP3EncoderLAME mp3(out);
+AudioInfoLAME info;
+int16_t buffer[512];
+
+void setup() {
+    Serial.begin(115200);
+
+    info.channels = 1;
+    info.sample_rate = 16000;
+    mp3.begin(info);
+
+    Serial.println("starting...");
+
+}
+
+void loop() {
+    for (int j=0;j<512;j++){
+        buffer[j] = (rand() % 100) - 50;         
+    }
+    if (mp3.write((uint8_t*)buffer, 512*sizeof(int16_t))){
+        out.flush();
+        Serial.println("512 samples of random data written");
+    }
+}