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

   1 #include "decklink_capture.h"
   2 #include "defs.h"
   3
   4 #include <DeckLinkAPI.h>
   5 #include <DeckLinkAPIConfiguration.h>
   6 #include <DeckLinkAPIDiscovery.h>
   7 #include <DeckLinkAPIModes.h>
   8 #include <DeckLinkAPITypes.h>
   9 #include <LinuxCOM.h>
  10 #include <assert.h>
  11 #include <errno.h>
  12 #include <sched.h>
  13 #include <string>
  14 #ifdef __SSE2__
  15 #include <immintrin.h>
  16 #endif
  17 #include <pthread.h>
  18 #include <stdint.h>
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <chrono>
  23 #include <cstdint>
  24 #include <utility>
  25 #include <vector>
  26
  27 #include "bmusb/bmusb.h"
  28 #include "decklink_util.h"
  29 #include "flags.h"
  30 #include "shared/memcpy_interleaved.h"
  31 #include "v210_converter.h"
  32
  33 using namespace std;
  34 using namespace std::chrono;
  35 using namespace std::placeholders;
  36 using namespace bmusb;
  37
  38 namespace {
  39
  40 BMDPixelFormat pixel_format_to_bmd(PixelFormat pixel_format)
  41 {
  42         switch (pixel_format) {
  43         case PixelFormat_8BitYCbCr:
  44                 return bmdFormat8BitYUV;
  45         case PixelFormat_10BitYCbCr:
  46                 return bmdFormat10BitYUV;
  47         default:
  48                 assert(false);
  49         }
  50 }
  51
  52 }  // namespace
  53
  54 DeckLinkCapture::DeckLinkCapture(IDeckLink *card, int card_index)
  55         : card_index(card_index), card(card)
  56 {
  57         {
  58                 const char *model_name;
  59                 char buf[256];
  60                 if (card->GetModelName(&model_name) == S_OK) {
  61                         snprintf(buf, sizeof(buf), "PCI card %d: %s", card_index, model_name);
  62                 } else {
  63                         snprintf(buf, sizeof(buf), "PCI card %d: Unknown DeckLink card", card_index);
  64                 }
  65                 description = buf;
  66         }
  67
  68         if (card->QueryInterface(IID_IDeckLinkInput, (void**)&input) != S_OK) {
  69                 fprintf(stderr, "Card %d has no inputs\n", card_index);
  70                 abort();
  71         }
  72
  73         IDeckLinkAttributes *attr;
  74         if (card->QueryInterface(IID_IDeckLinkAttributes, (void**)&attr) != S_OK) {
  75                 fprintf(stderr, "Card %d has no attributes\n", card_index);
  76                 abort();
  77         }
  78
  79         // Get the list of available video inputs.
  80         int64_t video_input_mask;
  81         if (attr->GetInt(BMDDeckLinkVideoInputConnections, &video_input_mask) != S_OK) {
  82                 fprintf(stderr, "Failed to enumerate video inputs for card %d\n", card_index);
  83                 abort();
  84         }
  85         const vector<pair<BMDVideoConnection, string>> video_input_types = {
  86                 { bmdVideoConnectionSDI, "SDI" },
  87                 { bmdVideoConnectionHDMI, "HDMI" },
  88                 { bmdVideoConnectionOpticalSDI, "Optical SDI" },
  89                 { bmdVideoConnectionComponent, "Component" },
  90                 { bmdVideoConnectionComposite, "Composite" },
  91                 { bmdVideoConnectionSVideo, "S-Video" }
  92         };
  93         for (const auto &video_input : video_input_types) {
  94                 if (video_input_mask & video_input.first) {
  95                         video_inputs.emplace(video_input.first, video_input.second);
  96                 }
  97         }
  98
  99         // And then the available audio inputs.
 100         int64_t audio_input_mask;
 101         if (attr->GetInt(BMDDeckLinkAudioInputConnections, &audio_input_mask) != S_OK) {
 102                 fprintf(stderr, "Failed to enumerate audio inputs for card %d\n", card_index);
 103                 abort();
 104         }
 105         const vector<pair<BMDAudioConnection, string>> audio_input_types = {
 106                 { bmdAudioConnectionEmbedded, "Embedded" },
 107                 { bmdAudioConnectionAESEBU, "AES/EBU" },
 108                 { bmdAudioConnectionAnalog, "Analog" },
 109                 { bmdAudioConnectionAnalogXLR, "Analog XLR" },
 110                 { bmdAudioConnectionAnalogRCA, "Analog RCA" },
 111                 { bmdAudioConnectionMicrophone, "Microphone" },
 112                 { bmdAudioConnectionHeadphones, "Headphones" }
 113         };
 114         for (const auto &audio_input : audio_input_types) {
 115                 if (audio_input_mask & audio_input.first) {
 116                         audio_inputs.emplace(audio_input.first, audio_input.second);
 117                 }
 118         }
 119
 120         // Check if we the card supports input autodetection.
 121         if (attr->GetFlag(BMDDeckLinkSupportsInputFormatDetection, &supports_autodetect) != S_OK) {
 122                 fprintf(stderr, "Warning: Failed to ask card %d whether it supports input format autodetection\n", card_index);
 123                 supports_autodetect = false;
 124         }
 125
 126         // If there's more than one subdevice on this card, label them.
 127         int64_t num_subdevices, subdevice_idx;
 128         if (attr->GetInt(BMDDeckLinkNumberOfSubDevices, &num_subdevices) == S_OK && num_subdevices > 1) {
 129                 if (attr->GetInt(BMDDeckLinkSubDeviceIndex, &subdevice_idx) == S_OK) {
 130                         char buf[256];
 131                         snprintf(buf, sizeof(buf), " (subdevice %d)", int(subdevice_idx));
 132                         description += buf;
 133                 }
 134         }
 135
 136         attr->Release();
 137
 138         /* Set up the video and audio sources. */
 139         if (card->QueryInterface(IID_IDeckLinkConfiguration, (void**)&config) != S_OK) {
 140                 fprintf(stderr, "Failed to get configuration interface for card %d\n", card_index);
 141                 abort();
 142         }
 143
 144         BMDVideoConnection connection = pick_default_video_connection(card, BMDDeckLinkVideoInputConnections, card_index);
 145
 146         set_video_input(connection);
 147         set_audio_input(bmdAudioConnectionEmbedded);
 148
 149         IDeckLinkDisplayModeIterator *mode_it;
 150         if (input->GetDisplayModeIterator(&mode_it) != S_OK) {
 151                 fprintf(stderr, "Failed to enumerate display modes for card %d\n", card_index);
 152                 abort();
 153         }
 154
 155         video_modes = summarize_video_modes(mode_it, card_index);
 156         mode_it->Release();
 157
 158         set_video_mode_no_restart(bmdModeHD720p5994);
 159
 160         input->SetCallback(this);
 161 }
 162
 163 DeckLinkCapture::~DeckLinkCapture()
 164 {
 165         if (has_dequeue_callbacks) {
 166                 dequeue_cleanup_callback();
 167         }
 168         input->Release();
 169         config->Release();
 170         card->Release();
 171 }
 172
 173 HRESULT STDMETHODCALLTYPE DeckLinkCapture::QueryInterface(REFIID, LPVOID *)
 174 {
 175         return E_NOINTERFACE;
 176 }
 177
 178 ULONG STDMETHODCALLTYPE DeckLinkCapture::AddRef(void)
 179 {
 180         return refcount.fetch_add(1) + 1;
 181 }
 182
 183 ULONG STDMETHODCALLTYPE DeckLinkCapture::Release(void)
 184 {
 185         int new_ref = refcount.fetch_sub(1) - 1;
 186         if (new_ref == 0)
 187                 delete this;
 188         return new_ref;
 189 }
 190
 191 HRESULT STDMETHODCALLTYPE DeckLinkCapture::VideoInputFormatChanged(
 192         BMDVideoInputFormatChangedEvents,
 193         IDeckLinkDisplayMode* display_mode,
 194         BMDDetectedVideoInputFormatFlags format_flags)
 195 {
 196         if (format_flags & bmdDetectedVideoInputRGB444) {
 197                 fprintf(stderr, "WARNING: Input detected as 4:4:4 RGB, but Nageru can't consume that yet.\n");
 198                 fprintf(stderr, "Doing hardware conversion to 4:2:2 Y'CbCr.\n");
 199         }
 200         if (supports_autodetect && display_mode->GetDisplayMode() != current_video_mode) {
 201                 set_video_mode(display_mode->GetDisplayMode());
 202         }
 203         if (display_mode->GetFrameRate(&frame_duration, &time_scale) != S_OK) {
 204                 fprintf(stderr, "Could not get new frame rate\n");
 205                 abort();
 206         }
 207         field_dominance = display_mode->GetFieldDominance();
 208         return S_OK;
 209 }
 210
 211 HRESULT STDMETHODCALLTYPE DeckLinkCapture::VideoInputFrameArrived(
 212         IDeckLinkVideoInputFrame *video_frame,
 213         IDeckLinkAudioInputPacket *audio_frame)
 214 {
 215         if (!done_init) {
 216                 char thread_name[16];
 217                 snprintf(thread_name, sizeof(thread_name), "DeckLink_C_%d", card_index);
 218                 pthread_setname_np(pthread_self(), thread_name);
 219
 220                 sched_param param;
 221                 memset(&param, 0, sizeof(param));
 222                 param.sched_priority = 1;
 223                 if (sched_setscheduler(0, SCHED_RR, &param) == -1) {
 224                         printf("couldn't set realtime priority for DeckLink thread: %s\n", strerror(errno));
 225                 }
 226
 227                 if (has_dequeue_callbacks) {
 228                         dequeue_init_callback();
 229                 }
 230                 done_init = true;
 231         }
 232
 233         steady_clock::time_point now = steady_clock::now();
 234
 235         FrameAllocator::Frame current_video_frame, current_audio_frame;
 236         VideoFormat video_format;
 237         AudioFormat audio_format;
 238
 239         video_format.frame_rate_nom = time_scale;
 240         video_format.frame_rate_den = frame_duration;
 241         // TODO: Respect the TFF/BFF flag.
 242         video_format.interlaced = (field_dominance == bmdLowerFieldFirst || field_dominance == bmdUpperFieldFirst);
 243         video_format.second_field_start = 1;
 244
 245         if (video_frame) {
 246                 video_format.has_signal = !(video_frame->GetFlags() & bmdFrameHasNoInputSource);
 247
 248                 const int width = video_frame->GetWidth();
 249                 const int height = video_frame->GetHeight();
 250                 const int stride = video_frame->GetRowBytes();
 251                 const BMDPixelFormat format = video_frame->GetPixelFormat();
 252                 assert(format == pixel_format_to_bmd(current_pixel_format));
 253                 if (global_flags.bit_depth > 8) {
 254                         assert(stride == int(v210Converter::get_v210_stride(width)));
 255                 } else {
 256                         assert(stride == width * 2);
 257                 }
 258
 259                 current_video_frame = video_frame_allocator->create_frame(width, height, stride);
 260                 if (current_video_frame.data != nullptr) {
 261                         const uint8_t *src;
 262                         video_frame->GetBytes((void **)&src);
 263                         size_t num_bytes = stride * height;
 264
 265                         if (current_video_frame.interleaved) {
 266                                 uint8_t *data = current_video_frame.data;
 267                                 uint8_t *data2 = current_video_frame.data2;
 268                                 memcpy_interleaved(data, data2, src, num_bytes);
 269                         } else {
 270                                 memcpy(current_video_frame.data, src, num_bytes);
 271                         }
 272                         if (current_video_frame.data_copy != nullptr) {
 273                                 memcpy(current_video_frame.data_copy, src, num_bytes);
 274                         }
 275                         current_video_frame.len += num_bytes;
 276
 277                         video_format.width = width;
 278                         video_format.height = height;
 279                         video_format.stride = stride;
 280                 }
 281         }
 282
 283         if (audio_frame) {
 284                 int num_samples = audio_frame->GetSampleFrameCount();
 285
 286                 current_audio_frame = audio_frame_allocator->alloc_frame();
 287                 if (current_audio_frame.data != nullptr) {
 288                         const uint8_t *src;
 289                         audio_frame->GetBytes((void **)&src);
 290                         current_audio_frame.len = sizeof(int32_t) * 8 * num_samples;
 291
 292                         memcpy(current_audio_frame.data, src, current_audio_frame.len);
 293
 294                         audio_format.bits_per_sample = 32;
 295                         audio_format.num_channels = 8;
 296                 }
 297         }
 298
 299         current_video_frame.received_timestamp = now;
 300         current_audio_frame.received_timestamp = now;
 301
 302         if (current_video_frame.data != nullptr || current_audio_frame.data != nullptr) {
 303                 // TODO: Put into a queue and put into a dequeue thread, if the
 304                 // BlackMagic drivers don't already do that for us?
 305                 frame_callback(timecode,
 306                         current_video_frame, /*video_offset=*/0, video_format,
 307                         current_audio_frame, /*audio_offset=*/0, audio_format);
 308         }
 309
 310         timecode++;
 311         return S_OK;
 312 }
 313
 314 void DeckLinkCapture::configure_card()
 315 {
 316         if (video_frame_allocator == nullptr) {
 317                 owned_video_frame_allocator.reset(new MallocFrameAllocator(FRAME_SIZE, NUM_QUEUED_VIDEO_FRAMES));
 318                 set_video_frame_allocator(owned_video_frame_allocator.get());
 319         }
 320         if (audio_frame_allocator == nullptr) {
 321                 owned_audio_frame_allocator.reset(new MallocFrameAllocator(65536, NUM_QUEUED_AUDIO_FRAMES));
 322                 set_audio_frame_allocator(owned_audio_frame_allocator.get());
 323         }
 324 }
 325
 326 void DeckLinkCapture::start_bm_capture()
 327 {
 328         if (running) {
 329                 return;
 330         }
 331         if (input->EnableVideoInput(current_video_mode, pixel_format_to_bmd(current_pixel_format), supports_autodetect ? bmdVideoInputEnableFormatDetection : 0) != S_OK) {
 332                 fprintf(stderr, "Failed to set video mode 0x%04x for card %d\n", current_video_mode, card_index);
 333                 abort();
 334         }
 335         if (input->EnableAudioInput(48000, bmdAudioSampleType32bitInteger, 8) != S_OK) {
 336                 fprintf(stderr, "Failed to enable audio input for card %d\n", card_index);
 337                 abort();
 338         }
 339
 340         if (input->StartStreams() != S_OK) {
 341                 fprintf(stderr, "StartStreams failed\n");
 342                 abort();
 343         }
 344         running = true;
 345 }
 346
 347 void DeckLinkCapture::stop_dequeue_thread()
 348 {
 349         if (!running) {
 350                 return;
 351         }
 352         HRESULT result = input->StopStreams();
 353         if (result != S_OK) {
 354                 fprintf(stderr, "StopStreams failed with error 0x%x\n", result);
 355                 abort();
 356         }
 357
 358         // We could call DisableVideoInput() and DisableAudioInput() here,
 359         // but they seem to be taking a really long time, and we only do this
 360         // during shutdown anyway (except when switching to output mode,
 361         // where DeckLinkOutput does the disabling), so StopStreams() will suffice.
 362
 363         running = false;
 364 }
 365
 366 void DeckLinkCapture::set_video_mode(uint32_t video_mode_id)
 367 {
 368         if (running) {
 369                 if (input->PauseStreams() != S_OK) {
 370                         fprintf(stderr, "PauseStreams failed\n");
 371                         abort();
 372                 }
 373                 if (input->FlushStreams() != S_OK) {
 374                         fprintf(stderr, "FlushStreams failed\n");
 375                         abort();
 376                 }
 377         }
 378
 379         set_video_mode_no_restart(video_mode_id);
 380
 381         if (running) {
 382                 if (input->StartStreams() != S_OK) {
 383                         fprintf(stderr, "StartStreams failed\n");
 384                         abort();
 385                 }
 386         }
 387 }
 388
 389 void DeckLinkCapture::set_pixel_format(PixelFormat pixel_format)
 390 {
 391         current_pixel_format = pixel_format;
 392         set_video_mode(current_video_mode);
 393 }
 394
 395 void DeckLinkCapture::set_video_mode_no_restart(uint32_t video_mode_id)
 396 {
 397         BMDDisplayModeSupport support;
 398         IDeckLinkDisplayMode *display_mode;
 399         if (input->DoesSupportVideoMode(video_mode_id, pixel_format_to_bmd(current_pixel_format), /*flags=*/0, &support, &display_mode)) {
 400                 fprintf(stderr, "Failed to query display mode for card %d\n", card_index);
 401                 abort();
 402         }
 403
 404         if (support == bmdDisplayModeNotSupported) {
 405                 fprintf(stderr, "Card %d does not support display mode\n", card_index);
 406                 abort();
 407         }
 408
 409         if (display_mode->GetFrameRate(&frame_duration, &time_scale) != S_OK) {
 410                 fprintf(stderr, "Could not get frame rate for card %d\n", card_index);
 411                 abort();
 412         }
 413
 414         field_dominance = display_mode->GetFieldDominance();
 415
 416         if (running) {
 417                 if (input->EnableVideoInput(video_mode_id, pixel_format_to_bmd(current_pixel_format), supports_autodetect ? bmdVideoInputEnableFormatDetection : 0) != S_OK) {
 418                         fprintf(stderr, "Failed to set video mode 0x%04x for card %d\n", video_mode_id, card_index);
 419                         abort();
 420                 }
 421         }
 422
 423         current_video_mode = video_mode_id;
 424 }
 425
 426 void DeckLinkCapture::set_video_input(uint32_t video_input_id)
 427 {
 428         if (config->SetInt(bmdDeckLinkConfigVideoInputConnection, video_input_id) != S_OK) {
 429                 fprintf(stderr, "Failed to set video input connection for card %d\n", card_index);
 430                 abort();
 431         }
 432
 433         current_video_input = video_input_id;
 434 }
 435
 436 void DeckLinkCapture::set_audio_input(uint32_t audio_input_id)
 437 {
 438         if (config->SetInt(bmdDeckLinkConfigAudioInputConnection, audio_input_id) != S_OK) {
 439                 fprintf(stderr, "Failed to set audio input connection for card %d\n", card_index);
 440                 abort();
 441         }
 442
 443         current_audio_input = audio_input_id;
 444 }