tests

examples/examples-basic-api/base-i2s-a2dp/base-i2s-a2dp.ino

@@ -11,8 +11,6 @@
 
 #include "AudioTools.h"
 
-
-
 /**
  * @brief We use a ADS1015 I2S microphone as input and send the data to A2DP
  * Unfortunatly the data type from the microphone (int32_t)  does not match with the required data type by A2DP (int16_t),
@@ -21,7 +19,6 @@
 
 BluetoothA2DPSource a2dp_source;
 I2S<int32_t> i2s;
-ChannelConverter<int32_t> converter(&NumberConverter::convertFrom32To16);
 ConverterFillLeftAndRight<int32_t> bothChannels;
 const size_t max_buffer_len = 1024;
 int32_t buffer[max_buffer_len][2];

examples/examples-desktop/generator/CMakeLists.txt

@@ -36,7 +36,7 @@ endif()
 add_executable (generator generator.cpp)
 
 # use main() from arduino_emulator
-target_compile_definitions(arduino_emulator PUBLIC -DDEFINE_MAIN)
+target_compile_definitions(arduino_emulator PUBLIC -©)
 
 # OS/X might need this setting for core audio
 #target_compile_definitions(portaudio PUBLIC -DPA_USE_COREAUDIO=1)

src/AudioLibs/AudioA2DP.h

@@ -25,9 +25,9 @@ namespace audio_tools {
  */
 
 template<typename T>
-class ChannelConverter {
+class A2DPChannelConverter {
     public:
-        ChannelConverter( int16_t (*convert_ptr)(T from)){
+        A2DPChannelConverter( int16_t (*convert_ptr)(T from)){
             this->convert_ptr = convert_ptr;
         }
 

src/AudioTools/AudioRuntime.cpp

@@ -8,6 +8,7 @@
  * @copyright Copyright (c) 2022
  * 
  */
+#include "Arduino.h"
 #include "AudioConfig.h"
 #include "AudioTools/AudioLogger.h"
 
@@ -16,3 +17,4 @@ extern "C" void __sync_synchronize(){
     LOGE("__sync_synchronize not implemented")
 }
 #endif
+

src/AudioTools/Converter.h

@@ -343,6 +343,49 @@ class ConverterToInternalDACFormat : public  BaseConverter<T> {
         int channels;
 };
 
+/**
+ * @brief We combine a datastream which consists of multiple channels into less channels. E.g. 2 to 1
+ * The last target channel will contain the combined values of the exceeding source channels.
+ * 
+ * @tparam T 
+ */
+template<typename T>
+class ChannelReducer : public BaseConverter<T> {
+    public:
+        ChannelReducer(int channelCountOfSource, int channelCountOfTarget=1){
+            from_channels = channelCountOfSource;
+            to_channels = channelCountOfTarget;
+        }
+        
+        size_t convert(uint8_t*src, size_t size) {
+            int frame_count = size/(sizeof(T)*from_channels);
+            size_t result_size=0;
+            T* result = (T*)src;
+            T* source = (T*)src;
+            int reduceDiv = from_channels-to_channels+1;
+
+            for(int i=0; i < frame_count; i++){
+                // copy first to_channels-1 
+                for (int j=0;j<to_channels-1;j++){
+                    *result++ = *source++;
+                    result_size += sizeof(T);
+                }
+                // commbined last channels
+                T total = 0;
+                for (int j=to_channels-1;j<from_channels;j++){
+                    total += *source++ / reduceDiv;
+                }                
+                *result++ = total;
+                result_size += sizeof(T);
+            }
+            return result_size;
+        }
+
+    protected:
+        int from_channels;
+        int to_channels;
+};
+
 
 /**
  * @brief Combines multiple converters

tests/CMakeLists.txt

@@ -13,7 +13,7 @@ endif()
 include(FetchContent)
 
 # Build with Portaudio 
-FetchContent_Declare(portaudio GIT_REPOSITORY "https://github.com/PortAudio/portaudio.git" GIT_TAG master )
+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)
@@ -28,7 +28,7 @@ if(NOT arduino_emulator_POPULATED)
     add_subdirectory(${arduino_emulator_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}/emulator)
 endif()
 
-
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/generator ${CMAKE_CURRENT_BINARY_DIR}/generator)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/effects ${CMAKE_CURRENT_BINARY_DIR}/effects)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/filter ${CMAKE_CURRENT_BINARY_DIR}/filter)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/mp3-helix ${CMAKE_CURRENT_BINARY_DIR}/mp3-helix)

tests/aac-fdk-encode/CMakeLists.txt

@@ -20,7 +20,7 @@ if(NOT fdk_aac_POPULATED)
 endif()
 
 # build sketch as executable
-add_executable (aac-fdk-encode aac-fdk-encode.cpp)
+add_executable (aac-fdk-encode aac-fdk-encode.cpp ../main.cpp)
 # use main() from arduino_emulator
 target_compile_definitions(aac-fdk-encode PUBLIC -DARDUINO -DEXIT_ON_STOP -DUSE_FDK -DIS_DESKTOP)
 

tests/aac-fdk-encode/aac-fdk-encode.cpp

@@ -32,7 +32,3 @@ void loop() {
     }
 }
 
-int main(){
-  setup();
-  while(true) loop();
-}

tests/aac-fdk/CMakeLists.txt

@@ -19,7 +19,7 @@ if(NOT fdk_aac_POPULATED)
 endif()
 
 # build sketch as executable
-add_executable (aac-fdk aac-fdk.cpp)
+add_executable (aac-fdk aac-fdk.cpp ../main.cpp)
 
 # use main() from arduino_emulator
 target_compile_definitions(aac-fdk PUBLIC -DARDUINO -DEXIT_ON_STOP -DUSE_FDK -DUSE_PORTAUDIO -DIS_DESKTOP)

tests/aac-fdk/aac-fdk.cpp

@@ -31,7 +31,3 @@ void loop(){
   }
 }
 
-int main(){
-  setup();
-  while(true) loop();
-}

tests/aac-helix/CMakeLists.txt

@@ -19,7 +19,7 @@ if(NOT helix_POPULATED)
 endif()
 
 # build sketch as executable
-add_executable (aac-helix aac-helix.cpp)
+add_executable (aac-helix aac-helix.cpp ../main.cpp)
 
 # use main() from arduino_emulator
 target_compile_definitions(aac-helix PUBLIC -DARDUINO -DEXIT_ON_STOP -DUSE_HELIX -DUSE_PORTAUDIO -DIS_DESKTOP)

tests/aac-helix/aac-helix.cpp

@@ -31,7 +31,3 @@ void loop(){
   }
 }
 
-int main(){
-  setup();
-  while(true) loop();
-}

tests/effects/CMakeLists.txt

@@ -10,7 +10,7 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
 endif()
 
 # build sketch as executable
-add_executable (effects effects.cpp)
+add_executable (effects effects.cpp ../main.cpp)
 # use main() from arduino_emulator
 target_compile_definitions(effects PUBLIC -DARDUINO -DEXIT_ON_STOP -DIS_DESKTOP)
 

tests/effects/effects.cpp

@@ -53,8 +53,3 @@ void loop() {
   copier.copy();
 }
 
-
-int main(){
-  setup();
-  while(true) loop();
-}

tests/filter/CMakeLists.txt

@@ -11,7 +11,7 @@ endif()
 
 
 # build sketch as executable
-add_executable (filter filter.cpp)
+add_executable (filter filter.cpp ../main.cpp)
 
 # use main() from arduino_emulator
 target_compile_definitions(filter PUBLIC -DEXIT_ON_STOP -DIS_DESKTOP)

tests/filter/filter.cpp

@@ -37,7 +37,3 @@ void loop(){
     copier.copy();
 }
 
-int main(){
-  setup();
-  while(true) loop();
-}

tests/generator/CMakeLists.txt

@@ -0,0 +1,21 @@
+cmake_minimum_required(VERSION 3.20)
+
+# set the project name
+project(generator)
+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()
+
+
+# build sketch as executable
+add_executable (generator generator.cpp ../main.cpp)
+
+# use main() from arduino_emulator
+target_compile_definitions(generator PUBLIC -DUSE_PORTAUDIO -DEXIT_ON_STOP -DIS_DESKTOP)
+
+# specify libraries
+target_link_libraries(generator portaudio arduino_emulator arduino-audio-tools)
+

tests/generator/generator.cpp

@@ -0,0 +1,31 @@
+// Simple wrapper for Arduino sketch to compilable with cpp in cmake
+#include "Arduino.h"
+#include "AudioTools.h"
+#include "AudioLibs/PortAudioStream.h"
+
+uint16_t sample_rate=44100;
+uint8_t channels = 2;                                             // The stream will have 2 channels 
+SineWaveGenerator<int16_t> sine_wave(32000);                                           // subclass of SoundGenerator with max amplitude of 32000
+GeneratedSoundStream<int16_t> in_stream(sine_wave);                   // Stream generated from sine wave
+PortAudioStream out;                                              // Output to Desktop
+StreamCopy copier(out, in_stream);                                // copies sound to out
+ChannelReducer<int16_t> reducer(channels,1);
+
+void setup(){
+  Serial.begin(115200);
+  AudioLogger::instance().begin(Serial, AudioLogger::Info);  
+
+  sine_wave.begin(channels, sample_rate, N_B4);
+  in_stream.begin();
+  
+  auto cfg1 = out.defaultConfig();
+  cfg1.sample_rate = sample_rate;
+  cfg1.channels = 1;
+  cfg1.bits_per_sample = 16;
+  out.begin(cfg1);
+}
+
+void loop(){
+    copier.copy(reducer);
+}
+

tests/main.cpp

@@ -0,0 +1,9 @@
+#ifdef IS_DESKTOP 
+
+#include "Arduino.h"
+int main(){
+  setup();
+  while(true) loop();
+}
+
+#endif

tests/mp3-helix/CMakeLists.txt

@@ -20,7 +20,7 @@ if(NOT helix_POPULATED)
 endif()
 
 # build sketch as executable
-add_executable (mp3-helix mp3-helix.cpp)
+add_executable (mp3-helix mp3-helix.cpp ../main.cpp)
 # use main() from arduino_emulator
 target_compile_definitions(mp3-helix PUBLIC -DARDUINO -DEXIT_ON_STOP -DUSE_HELIX -DUSE_PORTAUDIO  -DIS_DESKTOP)
 

tests/mp3-helix/mp3-helix.cpp

@@ -32,7 +32,3 @@ void loop(){
   }
 }
 
-int main(){
-  setup();
-  while(true) loop();
-}

tests/mp3-lame/CMakeLists.txt

@@ -20,10 +20,10 @@ if(NOT arduino_liblame_POPULATED)
 endif()
 
 # build sketch as executable
-add_executable (mp3-lame mp3-lame.cpp)
+add_executable (mp3-lame mp3-lame.cpp ../main.cpp)
 # use main() from arduino_emulator
 target_compile_definitions(mp3-lame PUBLIC -DARDUINO -DEXIT_ON_STOP -DUSE_LAME -DUSE_PORTAUDIO -DIS_DESKTOP)
 
 # specify libraries
-target_link_libraries(mp3-lame arduino_emulator arduino_liblame arduino-audio-tools)
+target_link_libraries(mp3-lame portaudio arduino_emulator arduino_liblame arduino-audio-tools)
 

tests/mp3-lame/mp3-lame.cpp

@@ -31,8 +31,3 @@ void loop() {
         Serial.println("512 samples of random data written");
     }
 }
-
-int main(){
-  setup();
-  while(true) loop();
-}

tests/mp3-mad/CMakeLists.txt

@@ -20,7 +20,7 @@ if(NOT arduino_libmad_POPULATED)
 endif()
 
 # build sketch as executable
-add_executable (mp3-mad mp3-mad.cpp)
+add_executable (mp3-mad mp3-mad.cpp ../main.cpp)
 # use main() from arduino_emulator
 target_compile_definitions(mp3-mad PUBLIC -DARDUINO -DEXIT_ON_STOP -DUSE_MAD -DUSE_PORTAUDIO -DIS_DESKTOP)
 

tests/mp3-mad/mp3-mad.cpp

@@ -32,7 +32,3 @@ void loop(){
   }
 }
 
-int main(){
-  setup();
-  while(true) loop();
-}

tests/mp3-metadata/CMakeLists.txt

@@ -11,7 +11,7 @@ endif()
 
 
 # build sketch as executable
-add_executable (mp3-metadata mp3-metadata.cpp)
+add_executable (mp3-metadata mp3-metadata.cpp ../main.cpp)
 
 # use main() from arduino_emulator
 target_compile_definitions(mp3-metadata PUBLIC -DEXIT_ON_STOP -DIS_DESKTOP)

tests/mp3-metadata/mp3-metadata.cpp

@@ -36,8 +36,3 @@ void loop(){
     exit(0);
   }
 }
-
-int main(){
-  setup();
-  while(true) loop();
-}

tests/url-test/CMakeLists.txt

@@ -12,7 +12,7 @@ endif()
 include(FetchContent)
 
 # build sketch as executable
-add_executable (url-test url-test.cpp)
+add_executable (url-test url-test.cpp ../main.cpp)
 # use main() from arduino_emulator
 target_compile_definitions(url-test PUBLIC -DARDUINO -DEXIT_ON_STOP -DIS_DESKTOP)
 

tests/url-test/url-test.cpp

@@ -20,7 +20,3 @@ void loop(){
   }
 }
 
-int main(){
-  setup();
-  while(true) loop();
-}