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

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