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