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