move to new cspot

components/spotify/cspot/bell/example/CMakeLists.txt

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+project(bell_example)
+cmake_minimum_required(VERSION 3.18)
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_BUILD_TYPE Debug)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../ ${CMAKE_CURRENT_BINARY_DIR}/bell)
+
+file(GLOB SOURCES "*.cpp")
+include_directories(".")
+
+add_executable(bell_example ${SOURCES})
+target_link_libraries(bell_example bell ${CMAKE_DL_LIBS} ${THINGS_TO_LINK})
+get_property(dirs DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY INCLUDE_DIRECTORIES)

components/spotify/cspot/bell/example/main.cpp

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+#include <memory.h>
+#include <atomic>
+#include <cmath>
+#include <fstream>
+#include <iostream>
+#include <map>
+#include <memory>
+#include <vector>
+#include "AudioCodecs.h"
+#include "AudioContainers.h"
+#include "BellHTTPServer.h"
+#include "BellTar.h"
+#include "BellTask.h"
+#include "CentralAudioBuffer.h"
+#include "Compressor.h"
+#include "DecoderGlobals.h"
+#include "EncodedAudioStream.h"
+#include "HTTPClient.h"
+#include "PortAudioSink.h"
+#define DEBUG_LEVEL 4
+#include "X509Bundle.h"
+#include "mbedtls/debug.h"
+
+#include <BellDSP.h>
+#include <BellLogger.h>
+
+std::shared_ptr<bell::CentralAudioBuffer> audioBuffer;
+std::atomic<bool> isPaused = false;
+
+class AudioPlayer : bell::Task {
+ public:
+  std::unique_ptr<PortAudioSink> audioSink;
+  std::unique_ptr<bell::BellDSP> dsp;
+
+  AudioPlayer() : bell::Task("player", 1024, 0, 0) {
+    this->audioSink = std::make_unique<PortAudioSink>();
+    this->audioSink->setParams(44100, 2, 16);
+    this->dsp = std::make_unique<bell::BellDSP>(audioBuffer);
+    startTask();
+  }
+
+  void runTask() override {
+    while (true) {
+      if (audioBuffer->hasAtLeast(64) || isPaused) {
+        auto chunk = audioBuffer->readChunk();
+
+        if (chunk != nullptr && chunk->pcmSize > 0) {
+          this->dsp->process(chunk->pcmData, chunk->pcmSize, 2, 44100,
+                             bell::BitWidth::BW_16);
+
+          this->audioSink->feedPCMFrames(chunk->pcmData, chunk->pcmSize);
+        }
+      }
+    }
+  }
+};
+
+int main() {
+  bell::setDefaultLogger();
+
+  std::fstream file("system.tar", std::ios::in | std::ios::binary);
+  if (!file.is_open()) {
+    std::cout << "file not open" << std::endl;
+    return 1;
+  }
+
+  BellTar::reader reader(file);
+  reader.extract_all_files("./dupa2");
+  return 0;
+}

components/spotify/cspot/bell/example/scripts/dsp_spectogram.py

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+import matplotlib.pyplot as plt
+from scipy import signal
+from scipy.io import wavfile
+
+sample_rate, samples = wavfile.read('out.wav')
+print(sample_rate)
+frequencies, times, spectrogram = signal.spectrogram(samples, sample_rate)
+
+plt.pcolormesh(times, frequencies, spectrogram)
+plt.imshow(spectrogram)
+plt.ylabel('Frequency [Hz]')
+plt.xlabel('Time [sec]')
+plt.show()