1 #include "DeckLinkAPI.h"
2 #include "DeckLinkAPIDiscovery.h"
3 #include "DeckLinkAPIModes.h"
4 #include "DeckLinkAPITypes.h"
8 #include <bmusb/bmusb.h>
16 #include "decklink_util.h"
19 using namespace bmusb;
22 map<uint32_t, VideoMode> summarize_video_modes(IDeckLinkDisplayModeIterator *mode_it, unsigned card_index)
24 map<uint32_t, VideoMode> video_modes;
26 for (IDeckLinkDisplayMode *mode_ptr; mode_it->Next(&mode_ptr) == S_OK; mode_ptr->Release()) {
29 const char *mode_name;
30 if (mode_ptr->GetName(&mode_name) != S_OK) {
31 mode.name = "Unknown mode";
33 mode.name = mode_name;
34 free((char *)mode_name);
37 mode.autodetect = false;
39 mode.width = mode_ptr->GetWidth();
40 mode.height = mode_ptr->GetHeight();
42 BMDTimeScale frame_rate_num;
43 BMDTimeValue frame_rate_den;
44 if (mode_ptr->GetFrameRate(&frame_rate_den, &frame_rate_num) != S_OK) {
45 fprintf(stderr, "Could not get frame rate for mode '%s' on card %d\n", mode.name.c_str(), card_index);
48 mode.frame_rate_num = frame_rate_num;
49 mode.frame_rate_den = frame_rate_den;
51 // TODO: Respect the TFF/BFF flag.
52 mode.interlaced = (mode_ptr->GetFieldDominance() == bmdLowerFieldFirst || mode_ptr->GetFieldDominance() == bmdUpperFieldFirst);
54 uint32_t id = mode_ptr->GetDisplayMode();
55 video_modes.insert(make_pair(id, mode));
61 BMDVideoConnection pick_default_video_connection(IDeckLink *card, BMDDeckLinkAttributeID attribute_id, unsigned card_index)
63 assert(attribute_id == BMDDeckLinkVideoInputConnections ||
64 attribute_id == BMDDeckLinkVideoOutputConnections);
66 IDeckLinkAttributes *attr;
67 if (card->QueryInterface(IID_IDeckLinkAttributes, (void**)&attr) != S_OK) {
68 fprintf(stderr, "Card %u has no attributes\n", card_index);
72 int64_t connection_mask;
73 if (attr->GetInt(attribute_id, &connection_mask) != S_OK) {
74 if (attribute_id == BMDDeckLinkVideoInputConnections) {
75 fprintf(stderr, "Failed to enumerate video inputs for card %u\n", card_index);
77 fprintf(stderr, "Failed to enumerate video outputs for card %u\n", card_index);
82 if (connection_mask == 0) {
83 if (attribute_id == BMDDeckLinkVideoInputConnections) {
84 fprintf(stderr, "Card %u has no input connections\n", card_index);
86 fprintf(stderr, "Card %u has no output connections\n", card_index);
91 if ((connection_mask & bmdVideoConnectionHDMI) &&
92 global_flags.default_hdmi_input) {
93 return bmdVideoConnectionHDMI;
94 } else if (connection_mask & bmdVideoConnectionSDI) {
95 return bmdVideoConnectionSDI;
96 } else if (connection_mask & bmdVideoConnectionHDMI) {
97 return bmdVideoConnectionHDMI;
99 // Fallback: Return lowest-set bit, whatever that might be.
100 return connection_mask & (-connection_mask);
104 bool decklink_card_is_active(IDeckLink *card, unsigned card_index)
106 IDeckLinkStatus *status;
107 if (card->QueryInterface(IID_IDeckLinkStatus, (void**)&status) != S_OK) {
108 fprintf(stderr, "Card %u has no status interface\n", card_index);
113 if (status->GetInt(bmdDeckLinkStatusDuplexMode, &duplex_mode) != S_OK) {
114 fprintf(stderr, "Could not query duplex mode for card %u\n", card_index);
120 return (duplex_mode != bmdDuplexStatusInactive);