Add support for DeckLink PCI cards through the official driver.

[nageru] / decklink_capture.h

diff --git a/decklink_capture.h b/decklink_capture.h
new file mode 100644 (file)
index 0000000..c591cdc
--- /dev/null
+++ b/decklink_capture.h
@@ -0,0 +1,97 @@
+#ifndef _DECKLINK_CAPTURE_H
+#define _DECKLINK_CAPTURE_H 1
+
+#include <DeckLinkAPI.h>
+#include <stdint.h>
+#include <atomic>
+#include <functional>
+#include <string>
+
+#include "bmusb/bmusb.h"
+
+class IDeckLink;
+class IDeckLinkDisplayMode;
+
+// TODO: Adjust CaptureInterface to be a little less bmusb-centric.
+// There are too many member functions here that don't really do anything.
+class DeckLinkCapture : public CaptureInterface, IDeckLinkInputCallback
+{
+public:
+       DeckLinkCapture(IDeckLink *card, int card_index);
+       ~DeckLinkCapture();
+
+       // IDeckLinkInputCallback.
+       HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, LPVOID *) override;
+       ULONG STDMETHODCALLTYPE AddRef() override;
+       ULONG STDMETHODCALLTYPE Release() override;
+       HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(
+               BMDVideoInputFormatChangedEvents,
+               IDeckLinkDisplayMode*,
+               BMDDetectedVideoInputFormatFlags) override;
+       HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(
+               IDeckLinkVideoInputFrame *video_frame,
+               IDeckLinkAudioInputPacket *audio_frame) override;
+
+       // CaptureInterface.
+       void set_video_frame_allocator(FrameAllocator *allocator) override
+       {
+               video_frame_allocator = allocator;
+       }
+
+       FrameAllocator *get_video_frame_allocator() override
+       {
+               return video_frame_allocator;
+       }
+
+       // Does not take ownership.
+       void set_audio_frame_allocator(FrameAllocator *allocator) override
+       {
+               audio_frame_allocator = allocator;
+       }
+
+       FrameAllocator *get_audio_frame_allocator() override
+       {
+               return audio_frame_allocator;
+       }
+
+       void set_frame_callback(frame_callback_t callback) override
+       {
+               frame_callback = callback;
+       }
+
+       void set_dequeue_thread_callbacks(std::function<void()> init, std::function<void()> cleanup) override
+       {
+               dequeue_init_callback = init;
+               dequeue_cleanup_callback = cleanup;
+               has_dequeue_callbacks = true;
+       }
+
+       std::string get_description() const override
+       {
+               return description;
+       }
+
+       void configure_card() override {}
+       void start_bm_capture() override;
+       void stop_dequeue_thread() override;
+
+private:
+       std::atomic<int> refcount{1};
+       bool done_init = false;
+       std::string description;
+       uint16_t timecode = 0;
+
+       bool has_dequeue_callbacks = false;
+       std::function<void()> dequeue_init_callback = nullptr;
+       std::function<void()> dequeue_cleanup_callback = nullptr;
+
+       FrameAllocator *video_frame_allocator = nullptr;
+       FrameAllocator *audio_frame_allocator = nullptr;
+       frame_callback_t frame_callback = nullptr;
+
+       IDeckLinkInput *input = nullptr;
+       BMDTimeValue frame_duration;
+       BMDTimeScale time_scale;
+};
+
+#endif  // !defined(_DECKLINK_CAPTURE_H)