init

pipemini/pipemini.h

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+#ifndef PIPEMINI_H
+#define PIPEMINI_H
+
+#include <pipewire/pipewire.h>
+#include <spa/param/audio/format-utils.h>
+#include <stdint.h>
+#include <functional>
+
+// Simple PipeWire audio output interface.
+// Calls a user-provided callback once per sample at the configured sample rate.
+// The callback writes one 16-bit stereo sample (left, right).
+class PipeMini {
+public:
+    using Callback = std::function<void(int16_t* left, int16_t* right)>;
+
+    PipeMini();
+    ~PipeMini();
+
+    // Start the stream with the given callback.
+    // sample_rate is typically 48000.
+    bool start(const Callback& cb, int sample_rate = 48000);
+    void stop();
+
+public:
+    static void on_process(void* userdata);
+
+    void teardown();
+
+private:
+    pw_main_loop* loop_ = nullptr;
+    pw_stream* stream_ = nullptr;
+    pw_core* core_ = nullptr;
+    pw_context* context_ = nullptr;
+    spa_hook stream_listener_ = {};
+    Callback callback_;
+    int sample_rate_ = 48000;
+    bool running_ = false;
+    struct PipeMiniData* data_ = nullptr;
+};
+
+#endif // PIPEMINI_H