modules/access/decklink.cpp

   1 /*****************************************************************************
   2  * decklink.cpp: BlackMagic DeckLink SDI input module
   3  *****************************************************************************
   4  * Copyright (C) 2010 Steinar H. Gunderson
   5  * Copyright (C) 2012-2014 Rafaël Carré
   6  *
   7  * Authors: Steinar H. Gunderson <steinar+vlc@gunderson.no>
   8             Rafaël Carré <funman@videolanorg>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with this program; if not, write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <vlc_common.h>
  30 #include <vlc_plugin.h>
  31 #include <vlc_demux.h>
  32
  33 #ifdef HAVE_ARPA_INET_H
  34 #include <arpa/inet.h>
  35 #endif
  36
  37 #include "vlc_decklink.h"
  38 #include <DeckLinkAPIDispatch.cpp>
  39
  40 #include "sdi.h"
  41
  42 #include <atomic>
  43
  44 static int  Open (vlc_object_t *);
  45 static void Close(vlc_object_t *);
  46
  47 #define CARD_INDEX_TEXT N_("Input card to use")
  48 #define CARD_INDEX_LONGTEXT N_( \
  49     "DeckLink capture card to use, if multiple exist. " \
  50     "The cards are numbered from 0.")
  51
  52 #define MODE_TEXT N_("Desired input video mode. Leave empty for autodetection.")
  53 #define MODE_LONGTEXT N_( \
  54     "Desired input video mode for DeckLink captures. " \
  55     "This value should be a FOURCC code in textual " \
  56     "form, e.g. \"ntsc\".")
  57
  58 #define AUDIO_CONNECTION_TEXT N_("Audio connection")
  59 #define AUDIO_CONNECTION_LONGTEXT N_( \
  60     "Audio connection to use for DeckLink captures. " \
  61     "Valid choices: embedded, aesebu, analog. " \
  62     "Leave blank for card default.")
  63
  64 #define RATE_TEXT N_("Audio samplerate (Hz)")
  65 #define RATE_LONGTEXT N_( \
  66     "Audio sampling rate (in hertz) for DeckLink captures. " \
  67     "0 disables audio input.")
  68
  69 #define CHANNELS_TEXT N_("Number of audio channels")
  70 #define CHANNELS_LONGTEXT N_( \
  71     "Number of input audio channels for DeckLink captures. " \
  72     "Must be 2, 8 or 16. 0 disables audio input.")
  73
  74 #define VIDEO_CONNECTION_TEXT N_("Video connection")
  75 #define VIDEO_CONNECTION_LONGTEXT N_( \
  76     "Video connection to use for DeckLink captures. " \
  77     "Valid choices: sdi, hdmi, opticalsdi, component, " \
  78     "composite, svideo. " \
  79     "Leave blank for card default.")
  80
  81 static const char *const ppsz_videoconns[] = {
  82     "sdi", "hdmi", "opticalsdi", "component", "composite", "svideo"
  83 };
  84 static const char *const ppsz_videoconns_text[] = {
  85     N_("SDI"), N_("HDMI"), N_("Optical SDI"), N_("Component"), N_("Composite"), N_("S-Video")
  86 };
  87
  88 static const char *const ppsz_audioconns[] = {
  89     "embedded", "aesebu", "analog"
  90 };
  91 static const char *const ppsz_audioconns_text[] = {
  92     N_("Embedded"), N_("AES/EBU"), N_("Analog")
  93 };
  94
  95 #define ASPECT_RATIO_TEXT N_("Aspect ratio")
  96 #define ASPECT_RATIO_LONGTEXT N_(\
  97     "Aspect ratio (4:3, 16:9). Default assumes square pixels.")
  98
  99 vlc_module_begin ()
 100     set_shortname(N_("DeckLink"))
 101     set_description(N_("Blackmagic DeckLink SDI input"))
 102     set_category(CAT_INPUT)
 103     set_subcategory(SUBCAT_INPUT_ACCESS)
 104
 105     add_integer("decklink-card-index", 0,
 106                  CARD_INDEX_TEXT, CARD_INDEX_LONGTEXT, true)
 107     add_string("decklink-mode", NULL,
 108                  MODE_TEXT, MODE_LONGTEXT, true)
 109     add_string("decklink-audio-connection", 0,
 110                  AUDIO_CONNECTION_TEXT, AUDIO_CONNECTION_LONGTEXT, true)
 111         change_string_list(ppsz_audioconns, ppsz_audioconns_text)
 112     add_integer("decklink-audio-rate", 48000,
 113                  RATE_TEXT, RATE_LONGTEXT, true)
 114     add_integer("decklink-audio-channels", 2,
 115                  CHANNELS_TEXT, CHANNELS_LONGTEXT, true)
 116     add_string("decklink-video-connection", 0,
 117                  VIDEO_CONNECTION_TEXT, VIDEO_CONNECTION_LONGTEXT, true)
 118         change_string_list(ppsz_videoconns, ppsz_videoconns_text)
 119     add_string("decklink-aspect-ratio", NULL,
 120                 ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, true)
 121     add_bool("decklink-tenbits", false, N_("10 bits"), N_("10 bits"), true)
 122
 123     add_shortcut("decklink")
 124     set_capability("access", 0)
 125     set_callbacks(Open, Close)
 126 vlc_module_end ()
 127
 128 static int Control(demux_t *, int, va_list);
 129
 130 namespace {
 131
 132 class DeckLinkCaptureDelegate;
 133
 134 struct demux_sys_t
 135 {
 136     IDeckLink *card;
 137     IDeckLinkInput *input;
 138     DeckLinkCaptureDelegate *delegate;
 139
 140     /* We need to hold onto the IDeckLinkConfiguration object, or our settings will not apply.
 141        See section 2.4.15 of the Blackmagic DeckLink SDK documentation. */
 142     IDeckLinkConfiguration *config;
 143     IDeckLinkAttributes *attributes;
 144
 145     bool autodetect;
 146
 147     es_out_id_t *video_es;
 148     es_format_t video_fmt;
 149     es_out_id_t *audio_es[8];
 150     es_out_id_t *cc_es;
 151
 152     vlc_mutex_t pts_lock;
 153     vlc_tick_t last_pts;  /* protected by <pts_lock> */
 154
 155     uint32_t dominance_flags;
 156     int channels;
 157     int audio_streams;
 158
 159     bool tenbits;
 160 };
 161
 162 } // namespace
 163
 164 static const char *GetFieldDominance(BMDFieldDominance dom, uint32_t *flags)
 165 {
 166     switch(dom)
 167     {
 168         case bmdProgressiveFrame:
 169             return "";
 170         case bmdProgressiveSegmentedFrame:
 171             return ", segmented";
 172         case bmdLowerFieldFirst:
 173             *flags = BLOCK_FLAG_BOTTOM_FIELD_FIRST;
 174             return ", interlaced [BFF]";
 175         case bmdUpperFieldFirst:
 176             *flags = BLOCK_FLAG_TOP_FIELD_FIRST;
 177             return ", interlaced [TFF]";
 178         case bmdUnknownFieldDominance:
 179         default:
 180             return ", unknown field dominance";
 181     }
 182 }
 183
 184 static es_format_t GetModeSettings(demux_t *demux, IDeckLinkDisplayMode *m,
 185         BMDDetectedVideoInputFormatFlags fmt_flags)
 186 {
 187     demux_sys_t *sys = (demux_sys_t *)demux->p_sys;
 188     uint32_t flags = 0;
 189     (void)GetFieldDominance(m->GetFieldDominance(), &flags);
 190
 191     BMDTimeValue frame_duration, time_scale;
 192     if (m->GetFrameRate(&frame_duration, &time_scale) != S_OK) {
 193         time_scale = 0;
 194         frame_duration = 1;
 195     }
 196
 197     es_format_t video_fmt;
 198     vlc_fourcc_t chroma = 0;
 199     switch (fmt_flags) {
 200         case bmdDetectedVideoInputYCbCr422:
 201             chroma = sys->tenbits ? VLC_CODEC_I422_10L : VLC_CODEC_UYVY;
 202             break;
 203         case bmdDetectedVideoInputRGB444:
 204             chroma = VLC_CODEC_ARGB;
 205             break;
 206         default:
 207             msg_Err(demux, "Unsupported input format");
 208             break;
 209     }
 210     es_format_Init(&video_fmt, VIDEO_ES, chroma);
 211
 212     video_fmt.video.i_chroma = chroma;
 213     video_fmt.video.i_width = m->GetWidth();
 214     video_fmt.video.i_height = m->GetHeight();
 215     video_fmt.video.i_sar_num = 1;
 216     video_fmt.video.i_sar_den = 1;
 217     video_fmt.video.i_frame_rate = time_scale;
 218     video_fmt.video.i_frame_rate_base = frame_duration;
 219     video_fmt.i_bitrate = video_fmt.video.i_width * video_fmt.video.i_height * video_fmt.video.i_frame_rate * 2 * 8;
 220
 221     unsigned aspect_num, aspect_den;
 222     if (!var_InheritURational(demux, &aspect_num, &aspect_den, "decklink-aspect-ratio") &&
 223          aspect_num > 0 && aspect_den > 0) {
 224         video_fmt.video.i_sar_num = aspect_num * video_fmt.video.i_height;
 225         video_fmt.video.i_sar_den = aspect_den * video_fmt.video.i_width;
 226     }
 227
 228     sys->dominance_flags = flags;
 229
 230     return video_fmt;
 231 }
 232 namespace {
 233
 234 class DeckLinkCaptureDelegate : public IDeckLinkInputCallback
 235 {
 236 public:
 237     DeckLinkCaptureDelegate(demux_t *demux) : demux_(demux)
 238     {
 239         m_ref_.store(1);
 240     }
 241
 242     virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, LPVOID *) { return E_NOINTERFACE; }
 243
 244     virtual ULONG STDMETHODCALLTYPE AddRef(void)
 245     {
 246         return m_ref_.fetch_add(1);
 247     }
 248
 249     virtual ULONG STDMETHODCALLTYPE Release(void)
 250     {
 251         uintptr_t new_ref = m_ref_.fetch_sub(1);
 252         if (new_ref == 0)
 253             delete this;
 254         return new_ref;
 255     }
 256
 257     virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode *mode, BMDDetectedVideoInputFormatFlags flags)
 258     {
 259         demux_sys_t *sys = static_cast<demux_sys_t *>(demux_->p_sys);
 260
 261         if( !(events & bmdVideoInputDisplayModeChanged ))
 262             return S_OK;
 263
 264         decklink_str_t tmp_name;
 265         char *mode_name = NULL;
 266         if (mode->GetName(&tmp_name) == S_OK) {
 267             mode_name = DECKLINK_STRDUP(tmp_name);
 268             DECKLINK_FREE(tmp_name);
 269         }
 270
 271         msg_Dbg(demux_, "Video input format changed to %s",
 272             (mode_name) ? mode_name : "unknown");
 273         free(mode_name);
 274         if (!sys->autodetect) {
 275             msg_Err(demux_, "Video format detection disabled");
 276             return S_OK;
 277         }
 278
 279         BMDPixelFormat fmt = 0;
 280         switch (flags) {
 281             case bmdDetectedVideoInputYCbCr422:
 282                 fmt = sys->tenbits ? bmdFormat10BitYUV : bmdFormat8BitYUV;
 283                 break;
 284             case bmdDetectedVideoInputRGB444:
 285                 fmt = bmdFormat8BitARGB;
 286                 break;
 287             default:
 288                 msg_Err(demux_, "Unsupported input format");
 289                 return S_OK;
 290         }
 291
 292         es_out_Del(demux_->out, sys->video_es);
 293         sys->video_fmt = GetModeSettings(demux_, mode, flags);
 294         sys->video_es = es_out_Add(demux_->out, &sys->video_fmt);
 295
 296         sys->input->PauseStreams();
 297         sys->input->EnableVideoInput( mode->GetDisplayMode(), fmt, bmdVideoInputEnableFormatDetection );
 298         sys->input->FlushStreams();
 299         sys->input->StartStreams();
 300
 301         return S_OK;
 302     }
 303
 304     virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);
 305
 306 private:
 307     std::atomic_uint m_ref_;
 308     demux_t *demux_;
 309 };
 310
 311 } // namespace
 312
 313 HRESULT DeckLinkCaptureDelegate::VideoInputFrameArrived(IDeckLinkVideoInputFrame* videoFrame, IDeckLinkAudioInputPacket* audioFrame)
 314 {
 315     demux_sys_t *sys = static_cast<demux_sys_t *>(demux_->p_sys);
 316
 317     if (videoFrame) {
 318         if (videoFrame->GetFlags() & bmdFrameHasNoInputSource) {
 319             msg_Warn(demux_, "No input signal detected (%ldx%ld)",
 320                      videoFrame->GetWidth(), videoFrame->GetHeight());
 321             return S_OK;
 322         }
 323
 324         const int width = videoFrame->GetWidth();
 325         const int height = videoFrame->GetHeight();
 326         const int stride = videoFrame->GetRowBytes();
 327
 328         int bpp = 0;
 329         switch (sys->video_fmt.i_codec) {
 330             case VLC_CODEC_I422_10L:
 331             case VLC_CODEC_ARGB:
 332                 bpp = 4;
 333                 break;
 334             case VLC_CODEC_UYVY:
 335                 bpp = 2;
 336                 break;
 337         };
 338         block_t *video_frame = block_Alloc(width * height * bpp);
 339         if (!video_frame)
 340             return S_OK;
 341
 342         const uint32_t *frame_bytes;
 343         videoFrame->GetBytes((void**)&frame_bytes);
 344
 345         BMDTimeValue stream_time, frame_duration;
 346         videoFrame->GetStreamTime(&stream_time, &frame_duration, CLOCK_FREQ);
 347         video_frame->i_flags = BLOCK_FLAG_TYPE_I | sys->dominance_flags;
 348         video_frame->i_pts = video_frame->i_dts = VLC_TICK_0 + stream_time;
 349
 350         if (sys->video_fmt.i_codec == VLC_CODEC_I422_10L) {
 351             v210_convert((uint16_t*)video_frame->p_buffer, frame_bytes, width, height);
 352             IDeckLinkVideoFrameAncillary *vanc;
 353             if (videoFrame->GetAncillaryData(&vanc) == S_OK) {
 354                 for (int i = 1; i < 21; i++) {
 355                     uint32_t *buf;
 356                     if (vanc->GetBufferForVerticalBlankingLine(i, (void**)&buf) != S_OK)
 357                         break;
 358                     uint16_t dec[width * 2];
 359                     v210_convert(&dec[0], buf, width, 1);
 360                     block_t *cc = vanc_to_cc(demux_, dec, width * 2);
 361                     if (!cc)
 362                         continue;
 363                     cc->i_pts = cc->i_dts = VLC_TICK_0 + stream_time;
 364
 365                     if (!sys->cc_es) {
 366                         es_format_t fmt;
 367
 368                         es_format_Init( &fmt, SPU_ES, VLC_CODEC_CEA608 );
 369                         fmt.psz_description = strdup(N_("Closed captions 1"));
 370                         if (fmt.psz_description) {
 371                             sys->cc_es = es_out_Add(demux_->out, &fmt);
 372                             msg_Dbg(demux_, "Adding Closed captions stream");
 373                         }
 374                     }
 375                     if (sys->cc_es)
 376                         es_out_Send(demux_->out, sys->cc_es, cc);
 377                     else
 378                         block_Release(cc);
 379                     break; // we found the line with Closed Caption data
 380                 }
 381                 vanc->Release();
 382             }
 383         } else if (sys->video_fmt.i_codec == VLC_CODEC_UYVY) {
 384             for (int y = 0; y < height; ++y) {
 385                 const uint8_t *src = (const uint8_t *)frame_bytes + stride * y;
 386                 uint8_t *dst = video_frame->p_buffer + width * 2 * y;
 387                 memcpy(dst, src, width * 2);
 388             }
 389         } else {
 390                 memcpy(video_frame->p_buffer, frame_bytes, width * height * bpp);
 391         }
 392
 393         vlc_mutex_lock(&sys->pts_lock);
 394         if (video_frame->i_pts > sys->last_pts)
 395             sys->last_pts = video_frame->i_pts;
 396         vlc_mutex_unlock(&sys->pts_lock);
 397
 398         es_out_SetPCR(demux_->out, video_frame->i_pts);
 399         es_out_Send(demux_->out, sys->video_es, video_frame);
 400     }
 401
 402     if (audioFrame && audioFrame->GetSampleFrameCount())
 403     {
 404         const int bytes = audioFrame->GetSampleFrameCount() * sizeof(int16_t) * sys->channels;
 405         BMDTimeValue packet_time;
 406         void *frame_bytes;
 407
 408         audioFrame->GetBytes(&frame_bytes);
 409         audioFrame->GetPacketTime(&packet_time, CLOCK_FREQ);
 410
 411         if(sys->audio_streams > 1)
 412         {
 413             for(int i=0; i<sys->audio_streams; i++)
 414             {
 415                 size_t i_samples = bytes / (sys->audio_streams * 4);
 416                 block_t *p_frame = block_Alloc(i_samples * 4);
 417                 if (!p_frame)
 418                     continue;
 419
 420                 for(size_t j=0; j<i_samples; j++) /* for each pair sample */
 421                 {
 422                     memcpy(&p_frame->p_buffer[j * 4],
 423                            &reinterpret_cast<uint8_t *>(frame_bytes)[(j * sys->audio_streams + i) * 4],
 424                            4);
 425                 }
 426
 427                 p_frame->i_pts = p_frame->i_dts = VLC_TICK_0 + packet_time;
 428                 es_out_Send(demux_->out, sys->audio_es[i], p_frame);
 429             }
 430         }
 431         else
 432         {
 433             block_t *audio_frame = block_Alloc(bytes);
 434             if (!audio_frame)
 435                 return S_OK;
 436             memcpy(audio_frame->p_buffer, frame_bytes, bytes);
 437             audio_frame->i_pts = audio_frame->i_dts = VLC_TICK_0 + packet_time;
 438             es_out_Send(demux_->out, sys->audio_es[0], audio_frame);
 439         }
 440
 441         vlc_mutex_lock(&sys->pts_lock);
 442         if (VLC_TICK_0 + packet_time > sys->last_pts)
 443             sys->last_pts = VLC_TICK_0 + packet_time;
 444         vlc_mutex_unlock(&sys->pts_lock);
 445
 446         es_out_SetPCR(demux_->out, VLC_TICK_0 + packet_time);
 447     }
 448
 449     return S_OK;
 450 }
 451
 452
 453 static int GetAudioConn(demux_t *demux)
 454 {
 455     demux_sys_t *sys = (demux_sys_t *)demux->p_sys;
 456
 457     char *opt = var_CreateGetNonEmptyString(demux, "decklink-audio-connection");
 458     if (!opt)
 459         return VLC_SUCCESS;
 460
 461     BMDAudioConnection c;
 462     if (!strcmp(opt, "embedded"))
 463         c = bmdAudioConnectionEmbedded;
 464     else if (!strcmp(opt, "aesebu"))
 465         c = bmdAudioConnectionAESEBU;
 466     else if (!strcmp(opt, "analog"))
 467         c = bmdAudioConnectionAnalog;
 468     else {
 469         msg_Err(demux, "Invalid audio-connection: `%s\' specified", opt);
 470         free(opt);
 471         return VLC_EGENERIC;
 472     }
 473
 474     if (sys->config->SetInt(bmdDeckLinkConfigAudioInputConnection, c) != S_OK) {
 475         msg_Err(demux, "Failed to set audio input connection");
 476         return VLC_EGENERIC;
 477     }
 478
 479     return VLC_SUCCESS;
 480 }
 481
 482 static int GetVideoConn(demux_t *demux)
 483 {
 484     demux_sys_t *sys = (demux_sys_t *)demux->p_sys;
 485
 486     char *opt = var_InheritString(demux, "decklink-video-connection");
 487     if (!opt)
 488         return VLC_SUCCESS;
 489
 490     BMDVideoConnection c;
 491     if (!strcmp(opt, "sdi"))
 492         c = bmdVideoConnectionSDI;
 493     else if (!strcmp(opt, "hdmi"))
 494         c = bmdVideoConnectionHDMI;
 495     else if (!strcmp(opt, "opticalsdi"))
 496         c = bmdVideoConnectionOpticalSDI;
 497     else if (!strcmp(opt, "component"))
 498         c = bmdVideoConnectionComponent;
 499     else if (!strcmp(opt, "composite"))
 500         c = bmdVideoConnectionComposite;
 501     else if (!strcmp(opt, "svideo"))
 502         c = bmdVideoConnectionSVideo;
 503     else {
 504         msg_Err(demux, "Invalid video-connection: `%s\' specified", opt);
 505         free(opt);
 506         return VLC_EGENERIC;
 507     }
 508
 509     free(opt);
 510     if (sys->config->SetInt(bmdDeckLinkConfigVideoInputConnection, c) != S_OK) {
 511         msg_Err(demux, "Failed to set video input connection");
 512         return VLC_EGENERIC;
 513     }
 514
 515     return VLC_SUCCESS;
 516 }
 517
 518 static int Open(vlc_object_t *p_this)
 519 {
 520     demux_t     *demux = (demux_t*)p_this;
 521     demux_sys_t *sys;
 522     int         ret = VLC_EGENERIC;
 523     int         card_index;
 524     int         physical_channels = 0;
 525     int         rate;
 526     BMDVideoInputFlags flags = bmdVideoInputFlagDefault;
 527
 528     if (demux->out == NULL)
 529         return VLC_EGENERIC;
 530
 531     /* Set up demux */
 532     demux->pf_demux = NULL;
 533     demux->pf_control = Control;
 534     demux->p_sys = sys = (demux_sys_t*)calloc(1, sizeof(demux_sys_t));
 535     if (!sys)
 536         return VLC_ENOMEM;
 537
 538     vlc_mutex_init(&sys->pts_lock);
 539
 540     sys->tenbits = var_InheritBool(p_this, "decklink-tenbits");
 541
 542     IDeckLinkIterator *decklink_iterator = CreateDeckLinkIteratorInstance();
 543     if (!decklink_iterator) {
 544         msg_Err(demux, "DeckLink drivers not found.");
 545         goto finish;
 546     }
 547
 548     card_index = var_InheritInteger(demux, "decklink-card-index");
 549     if (card_index < 0) {
 550         msg_Err(demux, "Invalid card index %d", card_index);
 551         goto finish;
 552     }
 553
 554     for (int i = 0; i <= card_index; i++) {
 555         if (sys->card)
 556             sys->card->Release();
 557         if (decklink_iterator->Next(&sys->card) != S_OK) {
 558             msg_Err(demux, "DeckLink PCI card %d not found", card_index);
 559             goto finish;
 560         }
 561     }
 562
 563     decklink_str_t tmp_name;
 564     char *model_name;
 565     if (sys->card->GetModelName(&tmp_name) != S_OK) {
 566         model_name = strdup("unknown");
 567     } else {
 568         model_name = DECKLINK_STRDUP(tmp_name);
 569         DECKLINK_FREE(tmp_name);
 570     }
 571
 572     msg_Dbg(demux, "Opened DeckLink PCI card %d (%s)", card_index, model_name);
 573     free(model_name);
 574
 575     if (sys->card->QueryInterface(IID_IDeckLinkInput, (void**)&sys->input) != S_OK) {
 576         msg_Err(demux, "Card has no inputs");
 577         goto finish;
 578     }
 579
 580     /* Set up the video and audio sources. */
 581     if (sys->card->QueryInterface(IID_IDeckLinkConfiguration, (void**)&sys->config) != S_OK) {
 582         msg_Err(demux, "Failed to get configuration interface");
 583         goto finish;
 584     }
 585
 586     if (sys->card->QueryInterface(IID_IDeckLinkAttributes, (void**)&sys->attributes) != S_OK) {
 587         msg_Err(demux, "Failed to get attributes interface");
 588         goto finish;
 589     }
 590
 591     if (GetVideoConn(demux) || GetAudioConn(demux))
 592         goto finish;
 593
 594     BMDPixelFormat fmt;
 595     fmt = sys->tenbits ? bmdFormat10BitYUV : bmdFormat8BitYUV;
 596     if (sys->attributes->GetFlag(BMDDeckLinkSupportsInputFormatDetection, &sys->autodetect) != S_OK) {
 597         msg_Err(demux, "Failed to query card attribute");
 598         goto finish;
 599     }
 600
 601     /* Get the list of display modes. */
 602     IDeckLinkDisplayModeIterator *mode_it;
 603     if (sys->input->GetDisplayModeIterator(&mode_it) != S_OK) {
 604         msg_Err(demux, "Failed to enumerate display modes");
 605         goto finish;
 606     }
 607
 608     union {
 609         BMDDisplayMode id;
 610         char str[4];
 611     } u;
 612
 613     u.id = 0;
 614
 615     char *mode;
 616     mode = var_CreateGetNonEmptyString(demux, "decklink-mode");
 617     if (mode)
 618         sys->autodetect = false; // disable autodetection if mode was set
 619
 620     if (sys->autodetect) {
 621         msg_Dbg(demux, "Card supports input format detection");
 622         flags |= bmdVideoInputEnableFormatDetection;
 623         /* Enable a random format, we will reconfigure on format detection */
 624         u.id = htonl(bmdModeHD1080p2997);
 625     } else {
 626         if (!mode || strlen(mode) < 3 || strlen(mode) > 4) {
 627             msg_Err(demux, "Invalid mode: \'%s\'", mode ? mode : "");
 628             free(mode);
 629             goto finish;
 630         }
 631
 632         msg_Dbg(demux, "Looking for mode \'%s\'", mode);
 633         memcpy(u.str, mode, 4);
 634         if (u.str[3] == '\0')
 635             u.str[3] = ' '; /* 'pal'\0 -> 'pal ' */
 636         free(mode);
 637     }
 638
 639     sys->video_fmt.video.i_width = 0;
 640
 641     for (IDeckLinkDisplayMode *m;; m->Release()) {
 642         if ((mode_it->Next(&m) != S_OK) || !m)
 643             break;
 644
 645         const char *mode_name;
 646         BMDTimeValue frame_duration, time_scale;
 647         uint32_t field_flags;
 648         const char *field = GetFieldDominance(m->GetFieldDominance(), &field_flags);
 649         BMDDisplayMode id = ntohl(m->GetDisplayMode());
 650         decklink_str_t tmp_name;
 651
 652         if (m->GetName(&tmp_name) != S_OK) {
 653             mode_name = "unknown";
 654         } else {
 655             mode_name = DECKLINK_STRDUP(tmp_name);
 656             DECKLINK_FREE(tmp_name);
 657         }
 658         if (m->GetFrameRate(&frame_duration, &time_scale) != S_OK) {
 659             time_scale = 0;
 660             frame_duration = 1;
 661         }
 662
 663         msg_Dbg(demux, "Found mode '%4.4s': %s (%dx%d, %.3f fps%s)",
 664                  (char*)&id, mode_name,
 665                  (int)m->GetWidth(), (int)m->GetHeight(),
 666                  double(time_scale) / frame_duration, field);
 667
 668         if (u.id == id) {
 669             sys->video_fmt = GetModeSettings(demux, m, bmdDetectedVideoInputYCbCr422);
 670             msg_Dbg(demux, "Using that mode");
 671         }
 672     }
 673
 674     mode_it->Release();
 675
 676     if (sys->video_fmt.video.i_width == 0) {
 677         msg_Err(demux, "Unknown video mode `%4.4s\' specified.", (char*)&u.id);
 678         goto finish;
 679     }
 680
 681     if (sys->input->EnableVideoInput(htonl(u.id), fmt, flags) != S_OK) {
 682         msg_Err(demux, "Failed to enable video input");
 683         goto finish;
 684     }
 685
 686     /* Set up audio. */
 687     sys->channels = var_InheritInteger(demux, "decklink-audio-channels");
 688     switch (sys->channels) {
 689     case 0:
 690         break;
 691     case 2:
 692         physical_channels = AOUT_CHANS_STEREO;
 693         sys->audio_streams = 1;
 694         break;
 695     case 8:
 696         physical_channels = AOUT_CHANS_7_1;
 697         sys->audio_streams = 1;
 698         break;
 699     case 16:
 700         physical_channels = AOUT_CHANS_STEREO;
 701         sys->audio_streams = 8;
 702         break;
 703     default:
 704         msg_Err(demux, "Invalid number of channels (%d), disabling audio", sys->channels);
 705         sys->channels = 0;
 706         sys->audio_streams = 0;
 707     }
 708     rate = var_InheritInteger(demux, "decklink-audio-rate");
 709     if (rate > 0 && sys->channels > 0) {
 710         if (sys->input->EnableAudioInput(rate, bmdAudioSampleType16bitInteger, sys->channels) != S_OK) {
 711             msg_Err(demux, "Failed to enable audio input");
 712             goto finish;
 713         }
 714     }
 715
 716     sys->delegate = new DeckLinkCaptureDelegate(demux);
 717     sys->input->SetCallback(sys->delegate);
 718
 719     if (sys->input->StartStreams() != S_OK) {
 720         msg_Err(demux, "Could not start streaming from SDI card. This could be caused "
 721                           "by invalid video mode or flags, access denied, or card already in use.");
 722         goto finish;
 723     }
 724
 725     msg_Dbg(demux, "added new video es %4.4s %dx%d",
 726              (char*)&sys->video_fmt.i_codec, sys->video_fmt.video.i_width, sys->video_fmt.video.i_height);
 727     sys->video_es = es_out_Add(demux->out, &sys->video_fmt);
 728
 729     es_format_t audio_fmt;
 730     es_format_Init(&audio_fmt, AUDIO_ES, VLC_CODEC_S16N);
 731     audio_fmt.audio.i_channels = sys->channels / sys->audio_streams;
 732     audio_fmt.audio.i_physical_channels = physical_channels;
 733     audio_fmt.audio.i_rate = rate;
 734     audio_fmt.audio.i_bitspersample = 16;
 735     audio_fmt.audio.i_blockalign = audio_fmt.audio.i_channels * audio_fmt.audio.i_bitspersample / 8;
 736     audio_fmt.i_bitrate = audio_fmt.audio.i_channels * audio_fmt.audio.i_rate * audio_fmt.audio.i_bitspersample;
 737
 738     for(int i=0; i<sys->audio_streams; i++)
 739     {
 740         msg_Dbg(demux, "added new audio es [%d] %4.4s %dHz %dbpp %dch", i,
 741                 (char*)&audio_fmt.i_codec, audio_fmt.audio.i_rate,
 742                 audio_fmt.audio.i_bitspersample, audio_fmt.audio.i_channels);
 743         sys->audio_es[i] = es_out_Add(demux->out, &audio_fmt);
 744     }
 745
 746     ret = VLC_SUCCESS;
 747
 748 finish:
 749     if (decklink_iterator)
 750         decklink_iterator->Release();
 751
 752     if (ret != VLC_SUCCESS)
 753         Close(p_this);
 754
 755     return ret;
 756 }
 757
 758 static void Close(vlc_object_t *p_this)
 759 {
 760     demux_t     *demux = (demux_t *)p_this;
 761     demux_sys_t *sys = (demux_sys_t *)demux->p_sys;
 762
 763     if (sys->attributes)
 764         sys->attributes->Release();
 765
 766     if (sys->config)
 767         sys->config->Release();
 768
 769     if (sys->input) {
 770         sys->input->StopStreams();
 771         sys->input->Release();
 772     }
 773
 774     if (sys->card)
 775         sys->card->Release();
 776
 777     if (sys->delegate)
 778         sys->delegate->Release();
 779
 780     vlc_mutex_destroy(&sys->pts_lock);
 781     free(sys);
 782 }
 783
 784 static int Control(demux_t *demux, int query, va_list args)
 785 {
 786     demux_sys_t *sys = (demux_sys_t *)demux->p_sys;
 787     bool *pb;
 788
 789     switch(query)
 790     {
 791         /* Special for access_demux */
 792         case DEMUX_CAN_PAUSE:
 793         case DEMUX_CAN_SEEK:
 794         case DEMUX_CAN_CONTROL_PACE:
 795             pb = va_arg(args, bool *);
 796             *pb = false;
 797             return VLC_SUCCESS;
 798
 799         case DEMUX_GET_PTS_DELAY:
 800             *va_arg(args, vlc_tick_t *) =
 801                 VLC_TICK_FROM_MS(var_InheritInteger(demux, "live-caching"));
 802             return VLC_SUCCESS;
 803
 804         case DEMUX_GET_TIME:
 805             vlc_mutex_lock(&sys->pts_lock);
 806             *va_arg(args, vlc_tick_t *) = sys->last_pts;
 807             vlc_mutex_unlock(&sys->pts_lock);
 808             return VLC_SUCCESS;
 809
 810         default:
 811             return VLC_EGENERIC;
 812     }
 813 }