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