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

   1 #include <movit/effect_util.h>
   2 #include <movit/util.h>
   3 #include <movit/resource_pool.h>  // Must be above the Xlib includes.
   4 #include <pthread.h>
   5
   6 #include <epoxy/egl.h>
   7
   8 #include "chroma_subsampler.h"
   9 #include "decklink_output.h"
  10 #include "decklink_util.h"
  11 #include "flags.h"
  12 #include "print_latency.h"
  13 #include "resource_pool.h"
  14 #include "timebase.h"
  15 #include "v210_converter.h"
  16
  17 using namespace movit;
  18 using namespace std;
  19 using namespace std::chrono;
  20
  21 DeckLinkOutput::DeckLinkOutput(ResourcePool *resource_pool, QSurface *surface, unsigned width, unsigned height, unsigned card_index)
  22         : resource_pool(resource_pool), surface(surface), width(width), height(height), card_index(card_index)
  23 {
  24         chroma_subsampler.reset(new ChromaSubsampler(resource_pool));
  25         latency_histogram.init("decklink_output");
  26 }
  27
  28 void DeckLinkOutput::set_device(IDeckLink *decklink)
  29 {
  30         if (decklink->QueryInterface(IID_IDeckLinkOutput, (void**)&output) != S_OK) {
  31                 fprintf(stderr, "Card %u has no outputs\n", card_index);
  32                 exit(1);
  33         }
  34
  35         IDeckLinkDisplayModeIterator *mode_it;
  36         if (output->GetDisplayModeIterator(&mode_it) != S_OK) {
  37                 fprintf(stderr, "Failed to enumerate output display modes for card %u\n", card_index);
  38                 exit(1);
  39         }
  40
  41         video_modes.clear();
  42
  43         for (const auto &it : summarize_video_modes(mode_it, card_index)) {
  44                 if (it.second.width != width || it.second.height != height) {
  45                         continue;
  46                 }
  47
  48                 // We could support interlaced modes, but let's stay out of it for now,
  49                 // since we don't have interlaced stream output.
  50                 if (it.second.interlaced) {
  51                         continue;
  52                 }
  53
  54                 video_modes.insert(it);
  55         }
  56
  57         mode_it->Release();
  58
  59         // HDMI or SDI generally mean “both HDMI and SDI at the same time” on DeckLink cards
  60         // that support both; pick_default_video_connection() will generally pick one of those
  61         // if they exist. We're not very likely to need analog outputs, so we don't need a way
  62         // to change beyond that.
  63         video_connection = pick_default_video_connection(decklink, BMDDeckLinkVideoOutputConnections, card_index);
  64 }
  65
  66 void DeckLinkOutput::start_output(uint32_t mode, int64_t base_pts)
  67 {
  68         assert(output);
  69         assert(!playback_initiated);
  70
  71         if (video_modes.empty()) {
  72                 fprintf(stderr, "ERROR: No matching output modes for %dx%d found\n", width, height);
  73                 exit(1);
  74         }
  75
  76         should_quit.unquit();
  77         playback_initiated = true;
  78         playback_started = false;
  79         this->base_pts = base_pts;
  80
  81         IDeckLinkConfiguration *config = nullptr;
  82         if (output->QueryInterface(IID_IDeckLinkConfiguration, (void**)&config) != S_OK) {
  83                 fprintf(stderr, "Failed to get configuration interface for output card\n");
  84                 exit(1);
  85         }
  86         if (config->SetFlag(bmdDeckLinkConfigLowLatencyVideoOutput, true) != S_OK) {
  87                 fprintf(stderr, "Failed to set low latency output\n");
  88                 exit(1);
  89         }
  90         if (config->SetInt(bmdDeckLinkConfigVideoOutputConnection, video_connection) != S_OK) {
  91                 fprintf(stderr, "Failed to set video output connection for card %u\n", card_index);
  92                 exit(1);
  93         }
  94         if (config->SetFlag(bmdDeckLinkConfigUse1080pNotPsF, true) != S_OK) {
  95                 fprintf(stderr, "Failed to set PsF flag for card\n");
  96                 exit(1);
  97         }
  98         if (config->SetFlag(bmdDeckLinkConfigSMPTELevelAOutput, true) != S_OK) {
  99                 // This affects at least some no-name SDI->HDMI converters.
 100                 // Warn, but don't die.
 101                 fprintf(stderr, "WARNING: Failed to enable SMTPE Level A; resolutions like 1080p60 might have issues.\n");
 102         }
 103
 104         BMDDisplayModeSupport support;
 105         IDeckLinkDisplayMode *display_mode;
 106         BMDPixelFormat pixel_format = global_flags.ten_bit_output ? bmdFormat10BitYUV : bmdFormat8BitYUV;
 107         if (output->DoesSupportVideoMode(mode, pixel_format, bmdVideoOutputFlagDefault,
 108                                          &support, &display_mode) != S_OK) {
 109                 fprintf(stderr, "Couldn't ask for format support\n");
 110                 exit(1);
 111         }
 112
 113         if (support == bmdDisplayModeNotSupported) {
 114                 fprintf(stderr, "Requested display mode not supported\n");
 115                 exit(1);
 116         }
 117
 118         current_mode_flags = display_mode->GetFlags();
 119
 120         BMDTimeValue time_value;
 121         BMDTimeScale time_scale;
 122         if (display_mode->GetFrameRate(&time_value, &time_scale) != S_OK) {
 123                 fprintf(stderr, "Couldn't get frame rate\n");
 124                 exit(1);
 125         }
 126
 127         frame_duration = time_value * TIMEBASE / time_scale;
 128
 129         display_mode->Release();
 130
 131         HRESULT result = output->EnableVideoOutput(mode, bmdVideoOutputFlagDefault);
 132         if (result != S_OK) {
 133                 fprintf(stderr, "Couldn't enable output with error 0x%x\n", result);
 134                 exit(1);
 135         }
 136         if (output->SetScheduledFrameCompletionCallback(this) != S_OK) {
 137                 fprintf(stderr, "Couldn't set callback\n");
 138                 exit(1);
 139         }
 140         assert(OUTPUT_FREQUENCY == 48000);
 141         if (output->EnableAudioOutput(bmdAudioSampleRate48kHz, bmdAudioSampleType32bitInteger, 2, bmdAudioOutputStreamTimestamped) != S_OK) {
 142                 fprintf(stderr, "Couldn't enable audio output\n");
 143                 exit(1);
 144         }
 145         if (output->BeginAudioPreroll() != S_OK) {
 146                 fprintf(stderr, "Couldn't begin audio preroll\n");
 147                 exit(1);
 148         }
 149
 150         present_thread = thread([this]{
 151                 QOpenGLContext *context = create_context(this->surface);
 152                 eglBindAPI(EGL_OPENGL_API);
 153                 if (!make_current(context, this->surface)) {
 154                         printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
 155                                 eglGetError());
 156                         exit(1);
 157                 }
 158                 present_thread_func();
 159                 delete_context(context);
 160         });
 161 }
 162
 163 void DeckLinkOutput::end_output()
 164 {
 165         if (!playback_initiated) {
 166                 return;
 167         }
 168
 169         should_quit.quit();
 170         frame_queues_changed.notify_all();
 171         present_thread.join();
 172         playback_initiated = false;
 173
 174         output->StopScheduledPlayback(0, nullptr, 0);
 175         output->DisableVideoOutput();
 176         output->DisableAudioOutput();
 177
 178         // Wait until all frames are accounted for, and free them.
 179         {
 180                 unique_lock<mutex> lock(frame_queue_mutex);
 181                 while (!(frame_freelist.empty() && num_frames_in_flight == 0)) {
 182                         frame_queues_changed.wait(lock, [this]{ return !frame_freelist.empty(); });
 183                         frame_freelist.pop();
 184                 }
 185         }
 186 }
 187
 188 void DeckLinkOutput::send_frame(GLuint y_tex, GLuint cbcr_tex, YCbCrLumaCoefficients output_ycbcr_coefficients, const vector<RefCountedFrame> &input_frames, int64_t pts, int64_t duration)
 189 {
 190         assert(!should_quit.should_quit());
 191
 192         if ((current_mode_flags & bmdDisplayModeColorspaceRec601) && output_ycbcr_coefficients == YCBCR_REC_709) {
 193                 if (!last_frame_had_mode_mismatch) {
 194                         fprintf(stderr, "WARNING: Chosen output mode expects Rec. 601 Y'CbCr coefficients.\n");
 195                         fprintf(stderr, "         Consider --output-ycbcr-coefficients=rec601 (or =auto).\n");
 196                 }
 197                 last_frame_had_mode_mismatch = true;
 198         } else if ((current_mode_flags & bmdDisplayModeColorspaceRec709) && output_ycbcr_coefficients == YCBCR_REC_601) {
 199                 if (!last_frame_had_mode_mismatch) {
 200                         fprintf(stderr, "WARNING: Chosen output mode expects Rec. 709 Y'CbCr coefficients.\n");
 201                         fprintf(stderr, "         Consider --output-ycbcr-coefficients=rec709 (or =auto).\n");
 202                 }
 203                 last_frame_had_mode_mismatch = true;
 204         } else {
 205                 last_frame_had_mode_mismatch = false;
 206         }
 207
 208         unique_ptr<Frame> frame = move(get_frame());
 209         if (global_flags.ten_bit_output) {
 210                 chroma_subsampler->create_v210(y_tex, cbcr_tex, width, height, frame->uyvy_tex);
 211         } else {
 212                 chroma_subsampler->create_uyvy(y_tex, cbcr_tex, width, height, frame->uyvy_tex);
 213         }
 214
 215         // Download the UYVY texture to the PBO.
 216         glPixelStorei(GL_PACK_ROW_LENGTH, 0);
 217         check_error();
 218
 219         glBindBuffer(GL_PIXEL_PACK_BUFFER, frame->pbo);
 220         check_error();
 221
 222         if (global_flags.ten_bit_output) {
 223                 glBindTexture(GL_TEXTURE_2D, frame->uyvy_tex);
 224                 check_error();
 225                 glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, BUFFER_OFFSET(0));
 226                 check_error();
 227         } else {
 228                 glBindTexture(GL_TEXTURE_2D, frame->uyvy_tex);
 229                 check_error();
 230                 glGetTexImage(GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, BUFFER_OFFSET(0));
 231                 check_error();
 232         }
 233
 234         glBindTexture(GL_TEXTURE_2D, 0);
 235         check_error();
 236         glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
 237         check_error();
 238
 239         glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
 240         check_error();
 241
 242         frame->fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
 243         check_error();
 244         glFlush();  // Make the DeckLink thread see the fence as soon as possible.
 245         check_error();
 246
 247         frame->input_frames = input_frames;
 248         frame->received_ts = find_received_timestamp(input_frames);
 249         frame->pts = pts;
 250         frame->duration = duration;
 251
 252         {
 253                 unique_lock<mutex> lock(frame_queue_mutex);
 254                 pending_video_frames.push(move(frame));
 255         }
 256         frame_queues_changed.notify_all();
 257 }
 258
 259 void DeckLinkOutput::send_audio(int64_t pts, const std::vector<float> &samples)
 260 {
 261         unique_ptr<int32_t[]> int_samples(new int32_t[samples.size()]);
 262         for (size_t i = 0; i < samples.size(); ++i) {
 263                 int_samples[i] = lrintf(samples[i] * 2147483648.0f);
 264         }
 265
 266         uint32_t frames_written;
 267         HRESULT result = output->ScheduleAudioSamples(int_samples.get(), samples.size() / 2,
 268                 pts, TIMEBASE, &frames_written);
 269         if (result != S_OK) {
 270                 fprintf(stderr, "ScheduleAudioSamples(pts=%ld) failed (result=0x%08x)\n", pts, result);
 271         } else {
 272                 if (frames_written != samples.size() / 2) {
 273                         fprintf(stderr, "ScheduleAudioSamples() returned short write (%u/%ld)\n", frames_written, samples.size() / 2);
 274                 }
 275         }
 276 }
 277
 278 void DeckLinkOutput::wait_for_frame(int64_t pts, int *dropped_frames, int64_t *frame_duration, bool *is_preroll, steady_clock::time_point *frame_timestamp)
 279 {
 280         assert(!should_quit.should_quit());
 281
 282         *dropped_frames = 0;
 283         *frame_duration = this->frame_duration;
 284
 285         const BMDTimeValue buffer = lrint(*frame_duration * global_flags.output_buffer_frames);
 286         const BMDTimeValue max_overshoot = lrint(*frame_duration * global_flags.output_slop_frames);
 287         BMDTimeValue target_time = pts - buffer;
 288
 289         // While prerolling, we send out frames as quickly as we can.
 290         if (target_time < base_pts) {
 291                 *is_preroll = true;
 292                 return;
 293         }
 294
 295         *is_preroll = !playback_started;
 296
 297         if (!playback_started) {
 298                 if (output->EndAudioPreroll() != S_OK) {
 299                         fprintf(stderr, "Could not end audio preroll\n");
 300                         exit(1);  // TODO
 301                 }
 302                 if (output->StartScheduledPlayback(base_pts, TIMEBASE, 1.0) != S_OK) {
 303                         fprintf(stderr, "Could not start playback\n");
 304                         exit(1);  // TODO
 305                 }
 306                 playback_started = true;
 307         }
 308
 309         BMDTimeValue stream_frame_time;
 310         double playback_speed;
 311         output->GetScheduledStreamTime(TIMEBASE, &stream_frame_time, &playback_speed);
 312
 313         *frame_timestamp = steady_clock::now() +
 314                 nanoseconds((target_time - stream_frame_time) * 1000000000 / TIMEBASE);
 315
 316         // If we're ahead of time, wait for the frame to (approximately) start.
 317         if (stream_frame_time < target_time) {
 318                 should_quit.sleep_until(*frame_timestamp);
 319                 return;
 320         }
 321
 322         // If we overshot the previous frame by just a little,
 323         // fire off one immediately.
 324         if (stream_frame_time < target_time + max_overshoot) {
 325                 fprintf(stderr, "Warning: Frame was %ld ms late (but not skipping it due to --output-slop-frames).\n",
 326                         lrint((stream_frame_time - target_time) * 1000.0 / TIMEBASE));
 327                 return;
 328         }
 329
 330         // Oops, we missed by more than one frame. Return immediately,
 331         // but drop so that we catch up.
 332         *dropped_frames = (stream_frame_time - target_time + *frame_duration - 1) / *frame_duration;
 333         const int64_t ns_per_frame = this->frame_duration * 1000000000 / TIMEBASE;
 334         *frame_timestamp += nanoseconds(*dropped_frames * ns_per_frame);
 335         fprintf(stderr, "Dropped %d output frames; skipping.\n", *dropped_frames);
 336 }
 337
 338 uint32_t DeckLinkOutput::pick_video_mode(uint32_t mode) const
 339 {
 340         if (video_modes.count(mode)) {
 341                 return mode;
 342         }
 343
 344         // Prioritize 59.94 > 60 > 29.97. If none of those are found, then pick the highest one.
 345         for (const pair<int, int> &desired : vector<pair<int, int>>{ { 60000, 1001 }, { 60, 0 }, { 30000, 1001 } }) {
 346                 for (const auto &it : video_modes) {
 347                         if (it.second.frame_rate_num * desired.second == desired.first * it.second.frame_rate_den) {
 348                                 return it.first;
 349                         }
 350                 }
 351         }
 352
 353         uint32_t best_mode = 0;
 354         double best_fps = 0.0;
 355         for (const auto &it : video_modes) {
 356                 double fps = double(it.second.frame_rate_num) / it.second.frame_rate_den;
 357                 if (fps > best_fps) {
 358                         best_mode = it.first;
 359                         best_fps = fps;
 360                 }
 361         }
 362         return best_mode;
 363 }
 364
 365 YCbCrLumaCoefficients DeckLinkOutput::preferred_ycbcr_coefficients() const
 366 {
 367         if (current_mode_flags & bmdDisplayModeColorspaceRec601) {
 368                 return YCBCR_REC_601;
 369         } else {
 370                 // Don't bother checking bmdDisplayModeColorspaceRec709;
 371                 // if none is set, 709 is a good default anyway.
 372                 return YCBCR_REC_709;
 373         }
 374 }
 375
 376 HRESULT DeckLinkOutput::ScheduledFrameCompleted(/* in */ IDeckLinkVideoFrame *completedFrame, /* in */ BMDOutputFrameCompletionResult result)
 377 {
 378         Frame *frame = static_cast<Frame *>(completedFrame);
 379         switch (result) {
 380         case bmdOutputFrameCompleted:
 381                 break;
 382         case bmdOutputFrameDisplayedLate:
 383                 fprintf(stderr, "Output frame displayed late (pts=%ld)\n", frame->pts);
 384                 fprintf(stderr, "Consider increasing --output-buffer-frames if this persists.\n");
 385                 break;
 386         case bmdOutputFrameDropped:
 387                 fprintf(stderr, "Output frame was dropped (pts=%ld)\n", frame->pts);
 388                 fprintf(stderr, "Consider increasing --output-buffer-frames if this persists.\n");
 389                 break;
 390         case bmdOutputFrameFlushed:
 391                 fprintf(stderr, "Output frame was flushed (pts=%ld)\n", frame->pts);
 392                 break;
 393         default:
 394                 fprintf(stderr, "Output frame completed with unknown status %d\n", result);
 395                 break;
 396         }
 397
 398         static int frameno = 0;
 399         print_latency("DeckLink output latency (frame received → output on HDMI):", frame->received_ts, false, &frameno, &latency_histogram);
 400
 401         {
 402                 lock_guard<mutex> lock(frame_queue_mutex);
 403                 frame_freelist.push(unique_ptr<Frame>(frame));
 404                 --num_frames_in_flight;
 405         }
 406
 407         return S_OK;
 408 }
 409
 410 HRESULT DeckLinkOutput::ScheduledPlaybackHasStopped()
 411 {
 412         printf("playback stopped!\n");
 413         return S_OK;
 414 }
 415
 416 unique_ptr<DeckLinkOutput::Frame> DeckLinkOutput::get_frame()
 417 {
 418         lock_guard<mutex> lock(frame_queue_mutex);
 419
 420         if (!frame_freelist.empty()) {
 421                 unique_ptr<Frame> frame = move(frame_freelist.front());
 422                 frame_freelist.pop();
 423                 return frame;
 424         }
 425
 426         unique_ptr<Frame> frame(new Frame);
 427
 428         size_t stride;
 429         if (global_flags.ten_bit_output) {
 430                 stride = v210Converter::get_v210_stride(width);
 431                 GLint v210_width = stride / sizeof(uint32_t);
 432                 frame->uyvy_tex = resource_pool->create_2d_texture(GL_RGB10_A2, v210_width, height);
 433
 434                 // We need valid texture state, or NVIDIA won't allow us to write to the texture.
 435                 glBindTexture(GL_TEXTURE_2D, frame->uyvy_tex);
 436                 check_error();
 437                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 438                 check_error();
 439         } else {
 440                 stride = width * 2;
 441                 frame->uyvy_tex = resource_pool->create_2d_texture(GL_RGBA8, width / 2, height);
 442         }
 443
 444         glGenBuffers(1, &frame->pbo);
 445         check_error();
 446         glBindBuffer(GL_PIXEL_PACK_BUFFER, frame->pbo);
 447         check_error();
 448         glBufferStorage(GL_PIXEL_PACK_BUFFER, stride * height, NULL, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
 449         check_error();
 450         frame->uyvy_ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, stride * height, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
 451         check_error();
 452         frame->uyvy_ptr_local.reset(new uint8_t[stride * height]);
 453         frame->resource_pool = resource_pool;
 454
 455         return frame;
 456 }
 457
 458 void DeckLinkOutput::present_thread_func()
 459 {
 460         pthread_setname_np(pthread_self(), "DeckLinkOutput");
 461         for ( ;; ) {
 462                 unique_ptr<Frame> frame;
 463                 {
 464                         unique_lock<mutex> lock(frame_queue_mutex);
 465                         frame_queues_changed.wait(lock, [this]{
 466                                 return should_quit.should_quit() || !pending_video_frames.empty();
 467                         });
 468                         if (should_quit.should_quit()) {
 469                                 return;
 470                         }
 471                         frame = move(pending_video_frames.front());
 472                         pending_video_frames.pop();
 473                         ++num_frames_in_flight;
 474                 }
 475
 476                 glClientWaitSync(frame->fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
 477                 check_error();
 478                 frame->fence.reset();
 479
 480                 if (global_flags.ten_bit_output) {
 481                         memcpy(frame->uyvy_ptr_local.get(), frame->uyvy_ptr, v210Converter::get_v210_stride(width) * height);
 482                 } else {
 483                         memcpy(frame->uyvy_ptr_local.get(), frame->uyvy_ptr, width * height * 2);
 484                 }
 485
 486                 // Release any input frames we needed to render this frame.
 487                 frame->input_frames.clear();
 488
 489                 BMDTimeValue pts = frame->pts;
 490                 BMDTimeValue duration = frame->duration;
 491                 HRESULT res = output->ScheduleVideoFrame(frame.get(), pts, duration, TIMEBASE);
 492                 if (res == S_OK) {
 493                         frame.release();  // Owned by the driver now.
 494                 } else {
 495                         fprintf(stderr, "Could not schedule video frame! (error=0x%08x)\n", res);
 496
 497                         lock_guard<mutex> lock(frame_queue_mutex);
 498                         frame_freelist.push(move(frame));
 499                         --num_frames_in_flight;
 500                 }
 501         }
 502 }
 503
 504 HRESULT STDMETHODCALLTYPE DeckLinkOutput::QueryInterface(REFIID, LPVOID *)
 505 {
 506         return E_NOINTERFACE;
 507 }
 508
 509 ULONG STDMETHODCALLTYPE DeckLinkOutput::AddRef()
 510 {
 511         return refcount.fetch_add(1) + 1;
 512 }
 513
 514 ULONG STDMETHODCALLTYPE DeckLinkOutput::Release()
 515 {
 516         int new_ref = refcount.fetch_sub(1) - 1;
 517         if (new_ref == 0)
 518                 delete this;
 519         return new_ref;
 520 }
 521
 522 DeckLinkOutput::Frame::~Frame()
 523 {
 524         glBindBuffer(GL_PIXEL_PACK_BUFFER, pbo);
 525         check_error();
 526         glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
 527         check_error();
 528         glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
 529         check_error();
 530         glDeleteBuffers(1, &pbo);
 531         check_error();
 532         resource_pool->release_2d_texture(uyvy_tex);
 533         check_error();
 534 }
 535
 536 HRESULT STDMETHODCALLTYPE DeckLinkOutput::Frame::QueryInterface(REFIID, LPVOID *)
 537 {
 538         return E_NOINTERFACE;
 539 }
 540
 541 ULONG STDMETHODCALLTYPE DeckLinkOutput::Frame::AddRef()
 542 {
 543         return refcount.fetch_add(1) + 1;
 544 }
 545
 546 ULONG STDMETHODCALLTYPE DeckLinkOutput::Frame::Release()
 547 {
 548         int new_ref = refcount.fetch_sub(1) - 1;
 549         if (new_ref == 0)
 550                 delete this;
 551         return new_ref;
 552 }
 553
 554 long DeckLinkOutput::Frame::GetWidth()
 555 {
 556         return global_flags.width;
 557 }
 558
 559 long DeckLinkOutput::Frame::GetHeight()
 560 {
 561         return global_flags.height;
 562 }
 563
 564 long DeckLinkOutput::Frame::GetRowBytes()
 565 {
 566         if (global_flags.ten_bit_output) {
 567                 return v210Converter::get_v210_stride(global_flags.width);
 568         } else {
 569                 return global_flags.width * 2;
 570         }
 571 }
 572
 573 BMDPixelFormat DeckLinkOutput::Frame::GetPixelFormat()
 574 {
 575         if (global_flags.ten_bit_output) {
 576                 return bmdFormat10BitYUV;
 577         } else {
 578                 return bmdFormat8BitYUV;
 579         }
 580 }
 581
 582 BMDFrameFlags DeckLinkOutput::Frame::GetFlags()
 583 {
 584         return bmdFrameFlagDefault;
 585 }
 586
 587 HRESULT DeckLinkOutput::Frame::GetBytes(/* out */ void **buffer)
 588 {
 589         *buffer = uyvy_ptr_local.get();
 590         return S_OK;
 591 }
 592
 593 HRESULT DeckLinkOutput::Frame::GetTimecode(/* in */ BMDTimecodeFormat format, /* out */ IDeckLinkTimecode **timecode)
 594 {
 595         fprintf(stderr, "STUB: GetTimecode()\n");
 596         return E_NOTIMPL;
 597 }
 598
 599 HRESULT DeckLinkOutput::Frame::GetAncillaryData(/* out */ IDeckLinkVideoFrameAncillary **ancillary)
 600 {
 601         fprintf(stderr, "STUB: GetAncillaryData()\n");
 602         return E_NOTIMPL;
 603 }