git.sesse.net Git - nageru/blob - nageru/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         IDeckLinkInput *get_input() const { return input; }
  30
  31         // IDeckLinkInputCallback.
  32         HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, LPVOID *) override;
  33         ULONG STDMETHODCALLTYPE AddRef() override;
  34         ULONG STDMETHODCALLTYPE Release() override;
  35         HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(
  36                 BMDVideoInputFormatChangedEvents,
  37                 IDeckLinkDisplayMode*,
  38                 BMDDetectedVideoInputFormatFlags) override;
  39         HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(
  40                 IDeckLinkVideoInputFrame *video_frame,
  41                 IDeckLinkAudioInputPacket *audio_frame) override;
  42
  43         // CaptureInterface.
  44         void set_video_frame_allocator(bmusb::FrameAllocator *allocator) override
  45         {
  46                 video_frame_allocator = allocator;
  47                 if (owned_video_frame_allocator.get() != allocator) {
  48                         owned_video_frame_allocator.reset();
  49                 }
  50         }
  51
  52         bmusb::FrameAllocator *get_video_frame_allocator() override
  53         {
  54                 return video_frame_allocator;
  55         }
  56
  57         // Does not take ownership.
  58         void set_audio_frame_allocator(bmusb::FrameAllocator *allocator) override
  59         {
  60                 audio_frame_allocator = allocator;
  61                 if (owned_audio_frame_allocator.get() != allocator) {
  62                         owned_audio_frame_allocator.reset();
  63                 }
  64         }
  65
  66         bmusb::FrameAllocator *get_audio_frame_allocator() override
  67         {
  68                 return audio_frame_allocator;
  69         }
  70
  71         void set_frame_callback(bmusb::frame_callback_t callback) override
  72         {
  73                 frame_callback = callback;
  74         }
  75
  76         void set_dequeue_thread_callbacks(std::function<void()> init, std::function<void()> cleanup) override
  77         {
  78                 dequeue_init_callback = init;
  79                 dequeue_cleanup_callback = cleanup;
  80                 has_dequeue_callbacks = true;
  81         }
  82
  83         std::string get_description() const override
  84         {
  85                 return description;
  86         }
  87
  88         void configure_card() override;
  89         void start_bm_capture() override;
  90         void stop_dequeue_thread() override;
  91
  92         // TODO: Can the API communicate this to us somehow, for e.g. Thunderbolt cards?
  93         bool get_disconnected() const override { return false; }
  94
  95         std::map<uint32_t, bmusb::VideoMode> get_available_video_modes() const override { return video_modes; }
  96         void set_video_mode(uint32_t video_mode_id) override;
  97         uint32_t get_current_video_mode() const override { return current_video_mode; }
  98
  99         std::set<bmusb::PixelFormat> get_available_pixel_formats() const override {
 100                 return std::set<bmusb::PixelFormat>{ bmusb::PixelFormat_8BitYCbCr, bmusb::PixelFormat_10BitYCbCr };
 101         }
 102         void set_pixel_format(bmusb::PixelFormat pixel_format) override;
 103         bmusb::PixelFormat get_current_pixel_format() const override {
 104                 return current_pixel_format;
 105         }
 106
 107         std::map<uint32_t, std::string> get_available_video_inputs() const override { return video_inputs; }
 108         void set_video_input(uint32_t video_input_id) override;
 109         uint32_t get_current_video_input() const override { return current_video_input; }
 110
 111         std::map<uint32_t, std::string> get_available_audio_inputs() const override { return audio_inputs; }
 112         void set_audio_input(uint32_t audio_input_id) override;
 113         uint32_t get_current_audio_input() const override { return current_audio_input; }
 114
 115 private:
 116         void set_video_mode_no_restart(uint32_t video_mode_id);
 117
 118         std::atomic<int> refcount{1};
 119         bool done_init = false;
 120         std::string description;
 121         uint16_t timecode = 0;
 122         int card_index;
 123
 124         bool has_dequeue_callbacks = false;
 125         std::function<void()> dequeue_init_callback = nullptr;
 126         std::function<void()> dequeue_cleanup_callback = nullptr;
 127
 128         bmusb::FrameAllocator *video_frame_allocator = nullptr;
 129         bmusb::FrameAllocator *audio_frame_allocator = nullptr;
 130         std::unique_ptr<bmusb::FrameAllocator> owned_video_frame_allocator;
 131         std::unique_ptr<bmusb::FrameAllocator> owned_audio_frame_allocator;
 132         bmusb::frame_callback_t frame_callback = nullptr;
 133
 134         IDeckLinkConfiguration *config = nullptr;
 135
 136         IDeckLink *card = nullptr;
 137         IDeckLinkInput *input = nullptr;
 138         BMDTimeValue frame_duration;
 139         BMDTimeScale time_scale;
 140         BMDFieldDominance field_dominance;
 141         bool running = false;
 142         bool supports_autodetect = false;
 143
 144         std::map<uint32_t, bmusb::VideoMode> video_modes;
 145         BMDDisplayMode current_video_mode;
 146         bmusb::PixelFormat current_pixel_format = bmusb::PixelFormat_8BitYCbCr;
 147
 148         std::map<uint32_t, std::string> video_inputs;
 149         BMDVideoConnection current_video_input;
 150
 151         std::map<uint32_t, std::string> audio_inputs;
 152         BMDAudioConnection current_audio_input;
 153 };
 154
 155 #endif  // !defined(_DECKLINK_CAPTURE_H)