Johanness
d02223224f
decklink-in: - IDeckLinkInputCallback::VideoInputFrameArrived captures V210 frames - Frame data stored with mutex, copied to MXL grain in process thread - Uses mxlSleepUntil for TAI-time-based grain pacing - Configurable: device_index (int), mode (1080i50/1080p50/etc) - Auto-detect input format via bmdVideoInputEnableFormatDetection - 1 output port: video_out (V210) decklink-out: - Reads V210 grains from MXL, schedules playback via DeckLink output - Creates IDeckLinkMutableVideoFrame, copies grain data, schedules - Uses ScheduledFrameCompleted callback for frame completion - Configurable: device_index (int), mode (1080i50/1080p50/etc) - 1 input port: video_in (V210) Both nodes: - Use DeckLinkAPIDispatch.cpp for CreateDeckLinkIteratorInstance - Access pixel data via IDeckLinkVideoBuffer (latest SDK API) - Graceful device open/close on writer/reader add/remove - Build conditionally via DMF_BUILD_DECKLINK + DECKLINK_SDK_DIR
79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
#pragma once
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#include <dmf-node/node.hpp>
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#include <mxl/flow.h>
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#include <mxl/time.h>
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#include <DeckLinkAPI.h>
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#include <atomic>
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#include <mutex>
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#include <optional>
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#include <thread>
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namespace dmf_node {
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class DeckLinkOutNode : public Node {
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public:
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DeckLinkOutNode() = default;
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~DeckLinkOutNode();
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std::string type() const override { return "decklink-out"; }
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std::vector<PortDef> input_ports() const override {
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return {{"video_in", PortDirection::Input, MediaType::VideoV210}};
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}
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std::vector<PortDef> output_ports() const override { return {}; }
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void configure(const nlohmann::json& params) override;
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void on_add_writer(const std::string& port_id, mxlFlowWriter writer) override {}
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void on_add_reader(const std::string& port_id, mxlFlowReader reader) override;
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void on_remove_writer(const std::string& port_id) override {}
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void on_remove_reader(const std::string& port_id) override;
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void process() override;
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nlohmann::json status() const override;
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private:
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bool open_device();
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void close_device();
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void schedule_frame(void* mxl_payload, long width, long height, long row_bytes);
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std::optional<mxlFlowReader> reader_;
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mxlRational grain_rate_{50, 1};
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uint64_t read_index_ = 0;
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uint64_t grains_read_ = 0;
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int device_index_ = 0;
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BMDDisplayMode display_mode_ = bmdModeHD1080i50;
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IDeckLink* decklink_ = nullptr;
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IDeckLinkOutput* output_ = nullptr;
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BMDTimeValue frame_duration_ = 1000;
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BMDTimeScale time_scale_ = 50000;
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std::atomic<bool> playing_{false};
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class OutputCallback : public IDeckLinkVideoOutputCallback {
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public:
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OutputCallback(DeckLinkOutNode& owner) : owner_(owner) {}
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HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, void**) override { return E_NOINTERFACE; }
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ULONG STDMETHODCALLTYPE AddRef() override { return 1; }
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ULONG STDMETHODCALLTYPE Release() override { return 1; }
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HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(
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IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult result) override;
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HRESULT STDMETHODCALLTYPE ScheduledPlaybackHasStopped() override;
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private:
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DeckLinkOutNode& owner_;
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};
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std::unique_ptr<OutputCallback> callback_;
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IDeckLinkMutableVideoFrame* scheduled_frame_ = nullptr;
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};
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} // namespace dmf_node
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