git.sesse.net Git - nageru/blob - decklink_capture.h

   1 #ifndef _DECKLINK_CAPTURE_H
   2 #define _DECKLINK_CAPTURE_H 1
   3
   4 #include <DeckLinkAPI.h>
   5 #include <stdint.h>
   6 #include <atomic>
   7 #include <functional>
   8 #include <map>
   9 #include <memory>
  10 #include <set>
  11 #include <string>
  12
  13 #include "DeckLinkAPIModes.h"
  14 #include "DeckLinkAPITypes.h"
  15 #include "LinuxCOM.h"
  16 #include "bmusb/bmusb.h"
  17
  18 class IDeckLink;
  19 class IDeckLinkConfiguration;
  20
  21 // TODO: Adjust CaptureInterface to be a little less bmusb-centric.
  22 // There are too many member functions here that don't really do anything.
  23 class DeckLinkCapture : public bmusb::CaptureInterface, IDeckLinkInputCallback
  24 {
  25 public:
  26         DeckLinkCapture(IDeckLink *card, int card_index);  // Takes ownership of <card>.
  27         ~DeckLinkCapture();
  28
  29         // IDeckLinkInputCallback.
  30         HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, LPVOID *) override;
  31         ULONG STDMETHODCALLTYPE AddRef() override;
  32         ULONG STDMETHODCALLTYPE Release() override;
  33         HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(
  34                 BMDVideoInputFormatChangedEvents,
  35                 IDeckLinkDisplayMode*,
  36                 BMDDetectedVideoInputFormatFlags) override;
  37         HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(
  38                 IDeckLinkVideoInputFrame *video_frame,
  39                 IDeckLinkAudioInputPacket *audio_frame) override;
  40
  41         // CaptureInterface.
  42         void set_video_frame_allocator(bmusb::FrameAllocator *allocator) override
  43         {
  44                 video_frame_allocator = allocator;
  45                 if (owned_video_frame_allocator.get() != allocator) {
  46                         owned_video_frame_allocator.reset();
  47                 }
  48         }
  49
  50         bmusb::FrameAllocator *get_video_frame_allocator() override
  51         {
  52                 return video_frame_allocator;
  53         }
  54
  55         // Does not take ownership.
  56         void set_audio_frame_allocator(bmusb::FrameAllocator *allocator) override
  57         {
  58                 audio_frame_allocator = allocator;
  59                 if (owned_audio_frame_allocator.get() != allocator) {
  60                         owned_audio_frame_allocator.reset();
  61                 }
  62         }
  63
  64         bmusb::FrameAllocator *get_audio_frame_allocator() override
  65         {
  66                 return audio_frame_allocator;
  67         }
  68
  69         void set_frame_callback(bmusb::frame_callback_t callback) override
  70         {
  71                 frame_callback = callback;
  72         }
  73
  74         void set_dequeue_thread_callbacks(std::function<void()> init, std::function<void()> cleanup) override
  75         {
  76                 dequeue_init_callback = init;
  77                 dequeue_cleanup_callback = cleanup;
  78                 has_dequeue_callbacks = true;
  79         }
  80
  81         std::string get_description() const override
  82         {
  83                 return description;
  84         }
  85
  86         void configure_card() override;
  87         void start_bm_capture() override;
  88         void stop_dequeue_thread() override;
  89
  90         // TODO: Can the API communicate this to us somehow, for e.g. Thunderbolt cards?
  91         bool get_disconnected() const override { return false; }
  92
  93         std::map<uint32_t, bmusb::VideoMode> get_available_video_modes() const override { return video_modes; }
  94         void set_video_mode(uint32_t video_mode_id) override;
  95         uint32_t get_current_video_mode() const override { return current_video_mode; }
  96
  97         std::set<bmusb::PixelFormat> get_available_pixel_formats() const override {
  98                 return std::set<bmusb::PixelFormat>{ bmusb::PixelFormat_8BitYCbCr, bmusb::PixelFormat_10BitYCbCr };
  99         }
 100         void set_pixel_format(bmusb::PixelFormat pixel_format) override;
 101         bmusb::PixelFormat get_current_pixel_format() const override {
 102                 return current_pixel_format;
 103         }
 104
 105         std::map<uint32_t, std::string> get_available_video_inputs() const override { return video_inputs; }
 106         void set_video_input(uint32_t video_input_id) override;
 107         uint32_t get_current_video_input() const override { return current_video_input; }
 108
 109         std::map<uint32_t, std::string> get_available_audio_inputs() const override { return audio_inputs; }
 110         void set_audio_input(uint32_t audio_input_id) override;
 111         uint32_t get_current_audio_input() const override { return current_audio_input; }
 112
 113 private:
 114         void set_video_mode_no_restart(uint32_t video_mode_id);
 115
 116         std::atomic<int> refcount{1};
 117         bool done_init = false;
 118         std::string description;
 119         uint16_t timecode = 0;
 120         int card_index;
 121
 122         bool has_dequeue_callbacks = false;
 123         std::function<void()> dequeue_init_callback = nullptr;
 124         std::function<void()> dequeue_cleanup_callback = nullptr;
 125
 126         bmusb::FrameAllocator *video_frame_allocator = nullptr;
 127         bmusb::FrameAllocator *audio_frame_allocator = nullptr;
 128         std::unique_ptr<bmusb::FrameAllocator> owned_video_frame_allocator;
 129         std::unique_ptr<bmusb::FrameAllocator> owned_audio_frame_allocator;
 130         bmusb::frame_callback_t frame_callback = nullptr;
 131
 132         IDeckLinkConfiguration *config = nullptr;
 133
 134         IDeckLink *card = nullptr;
 135         IDeckLinkInput *input = nullptr;
 136         BMDTimeValue frame_duration;
 137         BMDTimeScale time_scale;
 138         BMDFieldDominance field_dominance;
 139         bool running = false;
 140         bool supports_autodetect = false;
 141
 142         std::map<uint32_t, bmusb::VideoMode> video_modes;
 143         BMDDisplayMode current_video_mode;
 144         bmusb::PixelFormat current_pixel_format = bmusb::PixelFormat_8BitYCbCr;
 145
 146         std::map<uint32_t, std::string> video_inputs;
 147         BMDVideoConnection current_video_input;
 148
 149         std::map<uint32_t, std::string> audio_inputs;
 150         BMDAudioConnection current_audio_input;
 151 };
 152
 153 #endif  // !defined(_DECKLINK_CAPTURE_H)