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authorDavi Ribeiro <104164579+Markus328@users.noreply.github.com>2025-08-23 07:21:35 -0300
committerGitHub <noreply@github.com>2025-08-23 20:21:35 +1000
commitf747d82b9336bb7c691d39a1f001c0d30d7bfb95 (patch)
tree3456b6a9ed002382593e653a48a85b141edcc424 /assets/cpp/beat-detector.cpp
parentdashboard: better pfp picker (diff)
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bar: add idle inhibitor (#459)
* bar: add idle inhibitor * bar: change idle inhibitor button color * nix: link external scripts instead of install * services/idleinhibitor: add IPC handler * better styling * move cpp scripts to assets/cpp --------- Co-authored-by: Soramane <61896496+soramanew@users.noreply.github.com>
Diffstat (limited to 'assets/cpp/beat-detector.cpp')
-rwxr-xr-xassets/cpp/beat-detector.cpp568
1 files changed, 568 insertions, 0 deletions
diff --git a/assets/cpp/beat-detector.cpp b/assets/cpp/beat-detector.cpp
new file mode 100755
index 0000000..4eb9b48
--- /dev/null
+++ b/assets/cpp/beat-detector.cpp
@@ -0,0 +1,568 @@
+#include <algorithm>
+#include <pipewire/pipewire.h>
+#include <spa/param/audio/format-utils.h>
+#include <spa/param/props.h>
+#include <aubio/aubio.h>
+#include <memory>
+#include <iostream>
+#include <fstream>
+#include <csignal>
+#include <atomic>
+#include <vector>
+#include <cstring>
+#include <chrono>
+#include <iomanip>
+#include <sstream>
+#include <thread>
+#include <cmath>
+
+class EnhancedBeatDetector {
+private:
+ static constexpr uint32_t SAMPLE_RATE = 44100;
+ static constexpr uint32_t CHANNELS = 1;
+
+ // PipeWire objects
+ pw_main_loop* main_loop_;
+ pw_context* context_;
+ pw_core* core_;
+ pw_stream* stream_;
+
+ // Aubio objects
+ std::unique_ptr<aubio_tempo_t, decltype(&del_aubio_tempo)> tempo_;
+ std::unique_ptr<fvec_t, decltype(&del_fvec)> input_buffer_;
+ std::unique_ptr<fvec_t, decltype(&del_fvec)> output_buffer_;
+
+ // Additional aubio objects for enhanced features
+ std::unique_ptr<aubio_onset_t, decltype(&del_aubio_onset)> onset_;
+ std::unique_ptr<aubio_pitch_t, decltype(&del_aubio_pitch)> pitch_;
+ std::unique_ptr<fvec_t, decltype(&del_fvec)> pitch_buffer_;
+
+ const uint32_t buf_size_;
+ const uint32_t fft_size_;
+
+ static std::atomic<bool> should_quit_;
+ static EnhancedBeatDetector* instance_;
+
+ // Enhanced features
+ std::ofstream log_file_;
+ bool enable_logging_;
+ bool enable_performance_stats_;
+ bool enable_pitch_detection_;
+ bool enable_visual_feedback_;
+
+ // Performance tracking
+ std::chrono::high_resolution_clock::time_point last_process_time_;
+ std::vector<double> process_times_;
+ uint64_t total_beats_;
+ uint64_t total_onsets_;
+ std::chrono::steady_clock::time_point start_time_;
+
+ // Beat analysis
+ std::vector<float> recent_bpms_;
+ static constexpr size_t BPM_HISTORY_SIZE = 10;
+ float last_bpm_;
+ std::chrono::steady_clock::time_point last_beat_time_;
+
+ // Useless Visual feedback
+ std::string generate_beat_visual(float bpm, bool is_beat) {
+ if (!enable_visual_feedback_) return "";
+
+ std::stringstream ss;
+ if (is_beat) {
+ // Useless Animated beat indicator based on BPM intensity
+ int intensity = static_cast<int>(std::min(bpm / 20.0f, 10.0f));
+ ss << "\r ";
+ for (int i = 0; i < intensity; ++i) ss << "█";
+ for (int i = intensity; i < 10; ++i) ss << "░";
+ ss << " BPM: " << std::fixed << std::setprecision(1) << bpm;
+ ss << " | Avg: " << get_average_bpm();
+ }
+ return ss.str();
+ }
+
+public:
+ explicit EnhancedBeatDetector(uint32_t buf_size = 512,
+ bool enable_logging = true,
+ bool enable_performance_stats = true,
+ bool enable_pitch_detection = false,
+ bool enable_visual_feedback = true)
+ : main_loop_(nullptr)
+ , context_(nullptr)
+ , core_(nullptr)
+ , stream_(nullptr)
+ , tempo_(nullptr, &del_aubio_tempo)
+ , input_buffer_(nullptr, &del_fvec)
+ , output_buffer_(nullptr, &del_fvec)
+ , onset_(nullptr, &del_aubio_onset)
+ , pitch_(nullptr, &del_aubio_pitch)
+ , pitch_buffer_(nullptr, &del_fvec)
+ , buf_size_(buf_size)
+ , fft_size_(buf_size * 2)
+ , enable_logging_(enable_logging)
+ , enable_performance_stats_(enable_performance_stats)
+ , enable_pitch_detection_(enable_pitch_detection)
+ , enable_visual_feedback_(enable_visual_feedback)
+ , total_beats_(0)
+ , total_onsets_(0)
+ , last_bpm_(0.0f)
+ {
+ instance_ = this;
+ recent_bpms_.reserve(BPM_HISTORY_SIZE);
+ if (enable_performance_stats_) {
+ process_times_.reserve(1000); // Reserve space for performance data
+ }
+ initialize();
+ }
+
+ ~EnhancedBeatDetector() {
+ print_final_stats();
+ cleanup();
+ instance_ = nullptr;
+ }
+
+ // Delete copy constructor and assignment operator
+ EnhancedBeatDetector(const EnhancedBeatDetector&) = delete;
+ EnhancedBeatDetector& operator=(const EnhancedBeatDetector&) = delete;
+
+ bool initialize() {
+ start_time_ = std::chrono::steady_clock::now();
+
+ // Useless Initialize logging (actually useful)
+ if (enable_logging_) {
+ auto now = std::chrono::system_clock::now();
+ auto time_t = std::chrono::system_clock::to_time_t(now);
+ std::stringstream filename;
+ filename << "beat_log_" << std::put_time(std::localtime(&time_t), "%Y%m%d_%H%M%S") << ".txt";
+ log_file_.open(filename.str());
+ if (log_file_.is_open()) {
+ log_file_ << "# Beat Detection Log - " << std::put_time(std::localtime(&time_t), "%Y-%m-%d %H:%M:%S") << "\n";
+ log_file_ << "# Timestamp,BPM,Onset,Pitch(Hz),ProcessTime(ms)\n";
+ std::cout << " Logging to: " << filename.str() << std::endl;
+ }
+ }
+
+ // Initialize PipeWire
+ pw_init(nullptr, nullptr);
+
+ main_loop_ = pw_main_loop_new(nullptr);
+ if (!main_loop_) {
+ std::cerr << " Failed to create main loop" << std::endl;
+ return false;
+ }
+
+ context_ = pw_context_new(pw_main_loop_get_loop(main_loop_), nullptr, 0);
+ if (!context_) {
+ std::cerr << " Failed to create context" << std::endl;
+ return false;
+ }
+
+ core_ = pw_context_connect(context_, nullptr, 0);
+ if (!core_) {
+ std::cerr << " Failed to connect to PipeWire" << std::endl;
+ return false;
+ }
+
+ // Initialize Aubio objects
+ tempo_.reset(new_aubio_tempo("default", fft_size_, buf_size_, SAMPLE_RATE));
+ if (!tempo_) {
+ std::cerr << " Failed to create aubio tempo detector" << std::endl;
+ return false;
+ }
+
+ input_buffer_.reset(new_fvec(buf_size_));
+ output_buffer_.reset(new_fvec(1));
+
+ if (!input_buffer_ || !output_buffer_) {
+ std::cerr << " Failed to create aubio buffers" << std::endl;
+ return false;
+ }
+
+ // Initialize onset detection
+ onset_.reset(new_aubio_onset("default", fft_size_, buf_size_, SAMPLE_RATE));
+ if (!onset_) {
+ std::cerr << " Failed to create aubio onset detector" << std::endl;
+ return false;
+ }
+
+ // Initialize pitch detection if enabled
+ if (enable_pitch_detection_) {
+ pitch_.reset(new_aubio_pitch("default", fft_size_, buf_size_, SAMPLE_RATE));
+ pitch_buffer_.reset(new_fvec(1));
+ if (!pitch_ || !pitch_buffer_) {
+ std::cerr << " Failed to create aubio pitch detector" << std::endl;
+ return false;
+ }
+ aubio_pitch_set_unit(pitch_.get(), "Hz");
+ }
+
+ return setup_stream();
+ }
+
+ void run() {
+ if (!main_loop_) return;
+
+ print_startup_info();
+ pw_main_loop_run(main_loop_);
+ }
+
+ void stop() {
+ should_quit_ = true;
+ if (main_loop_) {
+ pw_main_loop_quit(main_loop_);
+ }
+ }
+
+ static void signal_handler(int sig) {
+ if (instance_) {
+ std::cout << "\n Received signal " << sig << ", stopping gracefullllly..." << std::endl;
+ instance_->stop();
+ }
+ }
+
+private:
+ void print_startup_info() {
+ std::cout << "\n󰝚 Beat Detector Started!" << std::endl;
+ std::cout << " Buffer size: " << buf_size_ << " samples" << std::endl;
+ std::cout << " Sample rate: " << SAMPLE_RATE << " Hz" << std::endl;
+ std::cout << " Features enabled:" << std::endl;
+ std::cout << "  Logging: " << (enable_logging_ ? " " : "") << std::endl;
+ std::cout << "  Performance stats: " << (enable_performance_stats_ ? " " : "") << std::endl;
+ std::cout << " 󰗅 Pitch detection: " << (enable_pitch_detection_ ? " " : "") << std::endl;
+ std::cout << "\n Listening for beats... Press Ctrl+C to stop.\n" << std::endl;
+ }
+
+ void print_final_stats() {
+ if (!enable_performance_stats_) return;
+
+ auto end_time = std::chrono::steady_clock::now();
+ auto duration = std::chrono::duration_cast<std::chrono::seconds>(end_time - start_time_);
+
+ std::cout << "\n Final Statistics:" << std::endl;
+ std::cout << " 󱎫 Total runtime: " << duration.count() << " seconds" << std::endl;
+ std::cout << "  Total beats detected: " << total_beats_ << std::endl;
+ std::cout << "  Total onsets detected: " << total_onsets_ << std::endl;
+
+ if (!process_times_.empty()) {
+ double avg_time = 0;
+ for (double t : process_times_) avg_time += t;
+ avg_time /= process_times_.size();
+
+ auto max_time = *std::max_element(process_times_.begin(), process_times_.end());
+ auto min_time = *std::min_element(process_times_.begin(), process_times_.end());
+
+ std::cout << " ⚡ Average processing time: " << std::fixed << std::setprecision(3)
+ << avg_time << " ms" << std::endl;
+ std::cout << " 📈 Max processing time: " << max_time << " ms" << std::endl;
+ std::cout << " 📉 Min processing time: " << min_time << " ms" << std::endl;
+ }
+
+ if (!recent_bpms_.empty()) {
+ std::cout << " 󰝚 Final average BPM: " << get_average_bpm() << std::endl;
+ }
+ }
+
+ float get_average_bpm() const {
+ if (recent_bpms_.empty()) return 0.0f;
+ float sum = 0;
+ for (float bpm : recent_bpms_) sum += bpm;
+ return sum / recent_bpms_.size();
+ }
+
+ bool setup_stream() {
+ // Stream events
+ static const pw_stream_events stream_events = {
+ .version = PW_VERSION_STREAM_EVENTS,
+ .destroy = nullptr,
+ .state_changed = on_state_changed,
+ .control_info = nullptr,
+ .io_changed = nullptr,
+ .param_changed = nullptr,
+ .add_buffer = nullptr,
+ .remove_buffer = nullptr,
+ .process = on_process,
+ .drained = nullptr,
+ .command = nullptr,
+ .trigger_done = nullptr,
+ };
+
+ stream_ = pw_stream_new_simple(
+ pw_main_loop_get_loop(main_loop_),
+ "enhanced-beat-detector",
+ pw_properties_new(
+ PW_KEY_MEDIA_TYPE, "Audio",
+ PW_KEY_MEDIA_CATEGORY, "Capture",
+ PW_KEY_MEDIA_ROLE, "Music",
+ nullptr
+ ),
+ &stream_events,
+ this
+ );
+
+ if (!stream_) {
+ std::cerr << " Failed to create stream" << std::endl;
+ return false;
+ }
+
+ // Audio format parameters
+ uint8_t buffer[1024];
+ spa_pod_builder pod_builder = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
+
+ struct spa_audio_info_raw audio_info = {};
+ audio_info.format = SPA_AUDIO_FORMAT_F32_LE;
+ audio_info.channels = CHANNELS;
+ audio_info.rate = SAMPLE_RATE;
+ audio_info.flags = 0;
+
+ const spa_pod* params[1];
+ params[0] = spa_format_audio_raw_build(&pod_builder, SPA_PARAM_EnumFormat, &audio_info);
+
+ if (pw_stream_connect(stream_,
+ PW_DIRECTION_INPUT,
+ PW_ID_ANY,
+ static_cast<pw_stream_flags>(
+ PW_STREAM_FLAG_AUTOCONNECT |
+ PW_STREAM_FLAG_MAP_BUFFERS |
+ PW_STREAM_FLAG_RT_PROCESS),
+ params, 1) < 0) {
+ std::cerr << " Failed to connect stream" << std::endl;
+ return false;
+ }
+
+ return true;
+ }
+
+ static void on_state_changed(void* userdata, enum pw_stream_state /* old_state */,
+ enum pw_stream_state state, const char* error) {
+ auto* detector = static_cast<EnhancedBeatDetector*>(userdata);
+
+ const char* state_emoji = "󰑓 ";
+ switch (state) {
+ case PW_STREAM_STATE_CONNECTING: state_emoji = "󰄙 "; break;
+ case PW_STREAM_STATE_PAUSED: state_emoji = ""; break;
+ case PW_STREAM_STATE_STREAMING: state_emoji = "󰝚 "; break;
+ case PW_STREAM_STATE_ERROR: state_emoji = ""; break;
+ case PW_STREAM_STATE_UNCONNECTED: state_emoji = " "; break;
+ }
+
+ std::cout << state_emoji << " Stream state: " << pw_stream_state_as_string(state) << std::endl;
+
+ if (state == PW_STREAM_STATE_ERROR) {
+ std::cerr << " Stream error: " << (error ? error : "unknown") << std::endl;
+ detector->stop();
+ }
+ }
+
+ static void on_process(void* userdata) {
+ auto* detector = static_cast<EnhancedBeatDetector*>(userdata);
+ detector->process_audio();
+ }
+
+ void process_audio() {
+ if (should_quit_) return;
+
+ auto process_start = std::chrono::high_resolution_clock::now();
+
+ pw_buffer* buffer = pw_stream_dequeue_buffer(stream_);
+ if (!buffer) return;
+
+ spa_buffer* spa_buf = buffer->buffer;
+ if (!spa_buf->datas[0].data) {
+ pw_stream_queue_buffer(stream_, buffer);
+ return;
+ }
+
+ const float* audio_data = static_cast<const float*>(spa_buf->datas[0].data);
+ const uint32_t n_samples = spa_buf->datas[0].chunk->size / sizeof(float);
+
+ // Process in chunks
+ for (uint32_t offset = 0; offset + buf_size_ <= n_samples; offset += buf_size_) {
+ std::memcpy(input_buffer_->data, audio_data + offset, buf_size_ * sizeof(float));
+
+ // Beat detection
+ aubio_tempo_do(tempo_.get(), input_buffer_.get(), output_buffer_.get());
+ bool is_beat = output_buffer_->data[0] != 0.0f;
+
+ // Onset detection
+ aubio_onset_do(onset_.get(), input_buffer_.get(), output_buffer_.get());
+ bool is_onset = output_buffer_->data[0] != 0.0f;
+
+ float pitch_hz = 0.0f;
+ if (enable_pitch_detection_) {
+ aubio_pitch_do(pitch_.get(), input_buffer_.get(), pitch_buffer_.get());
+ pitch_hz = pitch_buffer_->data[0];
+ }
+
+ if (is_beat) {
+ total_beats_++;
+ last_bpm_ = aubio_tempo_get_bpm(tempo_.get());
+ last_beat_time_ = std::chrono::steady_clock::now();
+
+ // Update BPM history
+ recent_bpms_.push_back(last_bpm_);
+ if (recent_bpms_.size() > BPM_HISTORY_SIZE) {
+ recent_bpms_.erase(recent_bpms_.begin());
+ }
+
+ // Visual feedback
+ if (enable_visual_feedback_) {
+ std::cout << generate_beat_visual(last_bpm_, true) << std::flush;
+ } else {
+ std::cout << " BPM: " << std::fixed << std::setprecision(1) << last_bpm_ << std::endl;
+ }
+ }
+
+ if (is_onset) {
+ total_onsets_++;
+ }
+
+ // Logging
+ if (enable_logging_ && log_file_.is_open() && (is_beat || is_onset)) {
+ auto now = std::chrono::system_clock::now();
+ auto time_t = std::chrono::system_clock::to_time_t(now);
+ auto ms = std::chrono::duration_cast<std::chrono::milliseconds>(
+ now.time_since_epoch()) % 1000;
+
+ log_file_ << std::put_time(std::localtime(&time_t), "%H:%M:%S")
+ << "." << std::setfill('0') << std::setw(3) << ms.count() << ","
+ << (is_beat ? last_bpm_ : 0) << ","
+ << (is_onset ? 1 : 0) << ","
+ << pitch_hz << ",";
+ }
+ }
+
+ pw_stream_queue_buffer(stream_, buffer);
+
+ // Performance tracking
+ if (enable_performance_stats_) {
+ auto process_end = std::chrono::high_resolution_clock::now();
+ auto process_time = std::chrono::duration<double, std::milli>(process_end - process_start).count();
+
+ if (log_file_.is_open() && (total_beats_ > 0 || total_onsets_ > 0)) {
+ log_file_ << std::fixed << std::setprecision(3) << process_time << "\n";
+ }
+
+ if (process_times_.size() < 1000) {
+ process_times_.push_back(process_time);
+ }
+ }
+ }
+
+ void cleanup() {
+ if (log_file_.is_open()) {
+ log_file_.close();
+ }
+
+ if (stream_) {
+ pw_stream_destroy(stream_);
+ stream_ = nullptr;
+ }
+
+ if (core_) {
+ pw_core_disconnect(core_);
+ core_ = nullptr;
+ }
+
+ if (context_) {
+ pw_context_destroy(context_);
+ context_ = nullptr;
+ }
+
+ if (main_loop_) {
+ pw_main_loop_destroy(main_loop_);
+ main_loop_ = nullptr;
+ }
+
+ tempo_.reset();
+ input_buffer_.reset();
+ output_buffer_.reset();
+ onset_.reset();
+ pitch_.reset();
+ pitch_buffer_.reset();
+
+ pw_deinit();
+
+ std::cout << "\n Cleanup complete - All resources freed!" << std::endl;
+ }
+};
+
+// Static member definitions
+std::atomic<bool> EnhancedBeatDetector::should_quit_{false};
+EnhancedBeatDetector* EnhancedBeatDetector::instance_{nullptr};
+
+void print_usage() {
+ std::cout << " Beat Detector Usage:" << std::endl;
+ std::cout << " ./beat_detector [buffer_size] [options]" << std::endl;
+ std::cout << "\nOptions:" << std::endl;
+ std::cout << " --no-log Disable logging to file" << std::endl;
+ std::cout << " --no-stats Disable performance statistics" << std::endl;
+ std::cout << " --pitch Enable pitch detection" << std::endl;
+ std::cout << " --no-visual Disable visual feedback" << std::endl;
+ std::cout << " --help Show this help" << std::endl;
+ std::cout << "\nExamples:" << std::endl;
+ std::cout << " ./beat_detector # Default settings" << std::endl;
+ std::cout << " ./beat_detector 256 --pitch # Smaller buffer with pitch detection" << std::endl;
+ std::cout << " ./beat_detector 1024 --no-visual # Larger buffer, no visual feedback" << std::endl;
+}
+
+int main(int argc, char* argv[]) {
+ // Parse command line arguments
+ uint32_t buffer_size = 512;
+ bool enable_logging = true;
+ bool enable_performance_stats = true;
+ bool enable_pitch_detection = false;
+ bool enable_visual_feedback = true;
+
+ for (int i = 1; i < argc; ++i) {
+ std::string arg = argv[i];
+
+ if (arg == "--help" || arg == "-h") {
+ print_usage();
+ return 0;
+ } else if (arg == "--no-log") {
+ enable_logging = false;
+ } else if (arg == "--no-stats") {
+ enable_performance_stats = false;
+ } else if (arg == "--pitch") {
+ enable_pitch_detection = true;
+ } else if (arg == "--no-visual") {
+ enable_visual_feedback = false;
+ } else if (arg[0] != '-') {
+ // Assume it's a buffer size
+ try {
+ buffer_size = std::stoul(arg);
+ if (buffer_size < 64 || buffer_size > 8192) {
+ std::cerr << " Buffer size must be between 64 and 8192" << std::endl;
+ return 1;
+ }
+ } catch (...) {
+ std::cerr << " Invalid buffer size: " << arg << std::endl;
+ return 1;
+ }
+ } else {
+ std::cerr << " Unknown option: " << arg << std::endl;
+ print_usage();
+ return 1;
+ }
+ }
+
+ // Set up signal handling
+ std::signal(SIGINT, EnhancedBeatDetector::signal_handler);
+ std::signal(SIGTERM, EnhancedBeatDetector::signal_handler);
+
+ try {
+ EnhancedBeatDetector detector(buffer_size, enable_logging, enable_performance_stats,
+ enable_pitch_detection, enable_visual_feedback);
+ detector.run();
+ } catch (const std::exception& e) {
+ std::cerr << " Error: " << e.what() << std::endl;
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Compilation command:
+ * g++ -std=c++17 -O3 -Wall -Wextra -I/usr/include/pipewire-0.3 -I/usr/include/spa-0.2 -I/usr/include/aubio \
+ * -o beat_detector beat_detector.cpp -lpipewire-0.3 -laubio -pthread
+ */