57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
#pragma once
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#include <cstdint>
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#include <memory>
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#include <optional>
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#include <span>
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#include <string_view>
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#include <variant>
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#include <vector>
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namespace sc {
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// Opaque resource owned by the capture implementation.
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struct CapturedFrame {
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int width = 0;
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int height = 0;
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uint64_t timestamp_ns = 0; // capture clock, monotonic
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std::vector<std::byte> pixels;
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// TODO: pixel format, stride, FD handle for dmabuf
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};
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// Capture target: whole monitor, specific window, or a region.
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struct CaptureTargetWholeScreen {};
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struct CaptureTargetWindow {
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std::string_view window_id;
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};
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struct CaptureTargetRegion {
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int x = 0;
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int y = 0;
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int width = 0;
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int height = 0;
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};
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using CaptureTarget = std::variant<
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CaptureTargetWholeScreen,
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CaptureTargetWindow,
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CaptureTargetRegion>;
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class CaptureSession {
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public:
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virtual ~CaptureSession() = default;
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// Blocking call to acquire one frame. Returns std::nullopt on graceful stop.
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virtual std::optional<CapturedFrame> next_frame() = 0;
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// Request the session to stop. May be called from another thread.
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virtual void stop() = 0;
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};
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// Factory for the PipeWire / xdg-desktop-portal capture backend.
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class CaptureFactory {
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public:
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static std::unique_ptr<CaptureSession> create(CaptureTarget target);
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};
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} // namespace sc
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