modules/access/decklink.cpp

   1 /*****************************************************************************
   2  * decklink.cpp: BlackMagic DeckLink SDI input module
   3  *****************************************************************************
   4  * Copyright (C) 2010 Steinar H. Gunderson
   5  *
   6  * Authors: Steinar H. Gunderson <steinar+vlc@gunderson.no>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  *****************************************************************************/
  23
  24 #define __STDC_CONSTANT_MACROS 1
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <vlc_common.h>
  31 #include <vlc_plugin.h>
  32 #include <vlc_demux.h>
  33 #include <vlc_atomic.h>
  34
  35 #include <arpa/inet.h>
  36
  37 #include <DeckLinkAPI.h>
  38 #include <DeckLinkAPIDispatch.cpp>
  39
  40 static int  Open ( vlc_object_t * );
  41 static void Close( vlc_object_t * );
  42
  43 #define CARD_INDEX_TEXT N_("Input card to use")
  44 #define CARD_INDEX_LONGTEXT N_( \
  45     "DeckLink capture card to use, if multiple exist. " \
  46     "The cards are numbered from 0." )
  47
  48 #define MODE_TEXT N_("Desired input video mode")
  49 #define MODE_LONGTEXT N_( \
  50     "Desired input video mode for DeckLink captures. " \
  51     "This value should be a FOURCC code in textual " \
  52     "form, e.g. \"ntsc\"." )
  53
  54 #define AUDIO_CONNECTION_TEXT N_("Audio connection")
  55 #define AUDIO_CONNECTION_LONGTEXT N_( \
  56     "Audio connection to use for DeckLink captures. " \
  57     "Valid choices: embedded, aesebu, analog. " \
  58     "Leave blank for card default." )
  59
  60 #define RATE_TEXT N_("Audio sampling rate in Hz")
  61 #define RATE_LONGTEXT N_( \
  62     "Audio sampling rate (in hertz) for DeckLink captures. " \
  63     "0 disables audio input." )
  64
  65 #define CHANNELS_TEXT N_("Number of audio channels")
  66 #define CHANNELS_LONGTEXT N_( \
  67     "Number of input audio channels for DeckLink captures. " \
  68     "Must be 2, 8 or 16. 0 disables audio input." )
  69
  70 #define VIDEO_CONNECTION_TEXT N_("Video connection")
  71 #define VIDEO_CONNECTION_LONGTEXT N_( \
  72     "Video connection to use for DeckLink captures. " \
  73     "Valid choices: sdi, hdmi, opticalsdi, component, " \
  74     "composite, svideo. " \
  75     "Leave blank for card default." )
  76
  77 static const char *const ppsz_videoconns[] = {
  78     "sdi", "hdmi", "opticalsdi", "component", "composite", "svideo"
  79 };
  80 static const char *const ppsz_videoconns_text[] = {
  81     N_("SDI"), N_("HDMI"), N_("Optical SDI"), N_("Component"), N_("Composite"), N_("S-video")
  82 };
  83
  84 static const char *const ppsz_audioconns[] = {
  85     "embedded", "aesebu", "analog"
  86 };
  87 static const char *const ppsz_audioconns_text[] = {
  88     N_("Embedded"), N_("AES/EBU"), N_("Analog")
  89 };
  90
  91 #define ASPECT_RATIO_TEXT N_("Aspect ratio")
  92 #define ASPECT_RATIO_LONGTEXT N_( \
  93     "Aspect ratio (4:3, 16:9). Default assumes square pixels." )
  94
  95 vlc_module_begin ()
  96     set_shortname( N_("DeckLink") )
  97     set_description( N_("Blackmagic DeckLink SDI input") )
  98     set_category( CAT_INPUT )
  99     set_subcategory( SUBCAT_INPUT_ACCESS )
 100
 101     add_integer( "decklink-card-index", 0,
 102                  CARD_INDEX_TEXT, CARD_INDEX_LONGTEXT, true )
 103     add_string( "decklink-mode", "pal ",
 104                  MODE_TEXT, MODE_LONGTEXT, true )
 105     add_string( "decklink-audio-connection", 0,
 106                  AUDIO_CONNECTION_TEXT, AUDIO_CONNECTION_LONGTEXT, true )
 107         change_string_list( ppsz_audioconns, ppsz_audioconns_text, 0 )
 108     add_integer( "decklink-audio-rate", 48000,
 109                  RATE_TEXT, RATE_LONGTEXT, true )
 110     add_integer( "decklink-audio-channels", 2,
 111                  CHANNELS_TEXT, CHANNELS_LONGTEXT, true )
 112     add_string( "decklink-video-connection", 0,
 113                  VIDEO_CONNECTION_TEXT, VIDEO_CONNECTION_LONGTEXT, true )
 114         change_string_list( ppsz_videoconns, ppsz_videoconns_text, 0 )
 115     add_string( "decklink-aspect-ratio", NULL,
 116                 ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, true )
 117
 118     add_shortcut( "decklink" )
 119     set_capability( "access_demux", 10 )
 120     set_callbacks( Open, Close )
 121 vlc_module_end ()
 122
 123 static int Control( demux_t *, int, va_list );
 124
 125 class DeckLinkCaptureDelegate;
 126
 127 struct demux_sys_t
 128 {
 129     IDeckLink *p_card;
 130     IDeckLinkInput *p_input;
 131     DeckLinkCaptureDelegate *p_delegate;
 132
 133     /* We need to hold onto the IDeckLinkConfiguration object, or our settings will not apply.
 134        See section 2.4.15 of the Blackmagic Decklink SDK documentation. */
 135     IDeckLinkConfiguration *p_config;
 136
 137     es_out_id_t *p_video_es;
 138     es_out_id_t *p_audio_es;
 139
 140     vlc_mutex_t pts_lock;
 141     int i_last_pts;  /* protected by <pts_lock> */
 142
 143     uint32_t i_dominance_flags;
 144     int i_channels;
 145 };
 146
 147 class DeckLinkCaptureDelegate : public IDeckLinkInputCallback
 148 {
 149 public:
 150     DeckLinkCaptureDelegate( demux_t *p_demux ) : p_demux_(p_demux)
 151     {
 152         vlc_atomic_set( &m_ref_, 1 );
 153     }
 154
 155     virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
 156
 157     virtual ULONG STDMETHODCALLTYPE AddRef(void)
 158     {
 159         return vlc_atomic_inc( &m_ref_ );
 160     }
 161
 162     virtual ULONG STDMETHODCALLTYPE Release(void)
 163     {
 164         uintptr_t new_ref = vlc_atomic_dec( &m_ref_ );
 165         if ( new_ref == 0 )
 166             delete this;
 167         return new_ref;
 168     }
 169
 170     virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags)
 171     {
 172         msg_Dbg( p_demux_, "Video input format changed" );
 173         return S_OK;
 174     }
 175
 176     virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);
 177
 178 private:
 179     vlc_atomic_t m_ref_;
 180     demux_t *p_demux_;
 181 };
 182
 183 HRESULT DeckLinkCaptureDelegate::VideoInputFrameArrived(IDeckLinkVideoInputFrame* videoFrame, IDeckLinkAudioInputPacket* audioFrame)
 184 {
 185     demux_sys_t *p_sys = p_demux_->p_sys;
 186     block_t *p_video_frame = NULL;
 187     block_t *p_audio_frame = NULL;
 188
 189     if( videoFrame )
 190     {
 191         if( videoFrame->GetFlags() & bmdFrameHasNoInputSource )
 192         {
 193             msg_Warn( p_demux_, "No input signal detected" );
 194             return S_OK;
 195         }
 196
 197         const int i_width = videoFrame->GetWidth();
 198         const int i_height = videoFrame->GetHeight();
 199         const int i_stride = videoFrame->GetRowBytes();
 200         const int i_bpp = 2;
 201
 202         p_video_frame = block_New( p_demux_, i_width * i_height * i_bpp );
 203         if( !p_video_frame )
 204         {
 205             msg_Err( p_demux_, "Could not allocate memory for video frame" );
 206             return S_OK;
 207         }
 208
 209         void *frame_bytes;
 210         videoFrame->GetBytes( &frame_bytes );
 211         for( int y = 0; y < i_height; ++y )
 212         {
 213             const uint8_t *src = (const uint8_t *)frame_bytes + i_stride * y;
 214             uint8_t *dst = p_video_frame->p_buffer + i_width * i_bpp * y;
 215             memcpy( dst, src, i_width * i_bpp );
 216         }
 217
 218         BMDTimeValue stream_time, frame_duration;
 219         videoFrame->GetStreamTime( &stream_time, &frame_duration, CLOCK_FREQ );
 220         p_video_frame->i_flags = BLOCK_FLAG_TYPE_I | p_sys->i_dominance_flags;
 221         p_video_frame->i_pts = p_video_frame->i_dts = VLC_TS_0 + stream_time;
 222
 223         vlc_mutex_lock( &p_sys->pts_lock );
 224         if( p_video_frame->i_pts > p_sys->i_last_pts )
 225             p_sys->i_last_pts = p_video_frame->i_pts;
 226         vlc_mutex_unlock( &p_sys->pts_lock );
 227
 228         es_out_Control( p_demux_->out, ES_OUT_SET_PCR, p_video_frame->i_pts );
 229         es_out_Send( p_demux_->out, p_sys->p_video_es, p_video_frame );
 230     }
 231
 232     if( audioFrame )
 233     {
 234         const int i_bytes = audioFrame->GetSampleFrameCount() * sizeof(int16_t) * p_sys->i_channels;
 235
 236         p_audio_frame = block_New( p_demux_, i_bytes );
 237         if( !p_audio_frame )
 238         {
 239             msg_Err( p_demux_, "Could not allocate memory for audio frame" );
 240             if( p_video_frame )
 241                 block_Release( p_video_frame );
 242             return S_OK;
 243         }
 244
 245         void *frame_bytes;
 246         audioFrame->GetBytes( &frame_bytes );
 247         memcpy( p_audio_frame->p_buffer, frame_bytes, i_bytes );
 248
 249         BMDTimeValue packet_time;
 250         audioFrame->GetPacketTime( &packet_time, CLOCK_FREQ );
 251         p_audio_frame->i_pts = p_audio_frame->i_dts = VLC_TS_0 + packet_time;
 252
 253         vlc_mutex_lock( &p_sys->pts_lock );
 254         if( p_audio_frame->i_pts > p_sys->i_last_pts )
 255             p_sys->i_last_pts = p_audio_frame->i_pts;
 256         vlc_mutex_unlock( &p_sys->pts_lock );
 257         if( p_audio_frame->i_pts > p_sys->i_last_pts )
 258
 259         es_out_Control( p_demux_->out, ES_OUT_SET_PCR, p_audio_frame->i_pts );
 260         es_out_Send( p_demux_->out, p_sys->p_audio_es, p_audio_frame );
 261     }
 262
 263     return S_OK;
 264 }
 265
 266 static int Open( vlc_object_t *p_this )
 267 {
 268     demux_t     *p_demux = (demux_t*)p_this;
 269     demux_sys_t *p_sys;
 270     int         ret = VLC_EGENERIC;
 271     char        *psz_aspect;
 272     char        *psz_display_mode = NULL;
 273     char        *psz_video_connection = NULL;
 274     char        *psz_audio_connection = NULL;
 275     bool        b_found_mode;
 276     int         i_card_index;
 277     int         i_width, i_height, i_fps_num, i_fps_den;
 278     int         i_rate;
 279     unsigned    u_aspect_num, u_aspect_den;
 280
 281     /* Only when selected */
 282     if( *p_demux->psz_access == '\0' )
 283         return VLC_EGENERIC;
 284
 285     /* Set up p_demux */
 286     p_demux->pf_demux = NULL;
 287     p_demux->pf_control = Control;
 288     p_demux->info.i_update = 0;
 289     p_demux->info.i_title = 0;
 290     p_demux->info.i_seekpoint = 0;
 291     p_demux->p_sys = p_sys = (demux_sys_t*)calloc( 1, sizeof( demux_sys_t ) );
 292     if( !p_sys )
 293         return VLC_ENOMEM;
 294
 295     vlc_mutex_init( &p_sys->pts_lock );
 296
 297     IDeckLinkDisplayModeIterator *p_display_iterator = NULL;
 298
 299     IDeckLinkIterator *decklink_iterator = CreateDeckLinkIteratorInstance();
 300     if( !decklink_iterator )
 301     {
 302         msg_Err( p_demux, "DeckLink drivers not found." );
 303         goto finish;
 304     }
 305
 306     HRESULT result;
 307
 308     i_card_index = var_InheritInteger( p_demux, "decklink-card-index" );
 309     if( i_card_index < 0 )
 310     {
 311         msg_Err( p_demux, "Invalid card index %d", i_card_index );
 312         goto finish;
 313     }
 314
 315     for( int i = 0; i <= i_card_index; ++i )
 316     {
 317         if( p_sys->p_card )
 318             p_sys->p_card->Release();
 319         result = decklink_iterator->Next( &p_sys->p_card );
 320         if( result != S_OK )
 321             break;
 322     }
 323
 324     if( result != S_OK )
 325     {
 326         msg_Err( p_demux, "DeckLink PCI card %d not found", i_card_index );
 327         goto finish;
 328     }
 329
 330     const char *psz_model_name;
 331     result = p_sys->p_card->GetModelName( &psz_model_name );
 332
 333     if( result != S_OK )
 334     {
 335         msg_Err( p_demux, "Could not get model name" );
 336         goto finish;
 337     }
 338
 339     msg_Dbg( p_demux, "Opened DeckLink PCI card %d (%s)", i_card_index, psz_model_name );
 340
 341     if( p_sys->p_card->QueryInterface( IID_IDeckLinkInput, (void**)&p_sys->p_input) != S_OK )
 342     {
 343         msg_Err( p_demux, "Card has no inputs" );
 344         goto finish;
 345     }
 346
 347     /* Set up the video and audio sources. */
 348     if( p_sys->p_card->QueryInterface( IID_IDeckLinkConfiguration, (void**)&p_sys->p_config) != S_OK )
 349     {
 350         msg_Err( p_demux, "Failed to get configuration interface" );
 351         goto finish;
 352     }
 353
 354     psz_video_connection = var_InheritString( p_demux, "decklink-video-connection" );
 355     if( psz_video_connection )
 356     {
 357         BMDVideoConnection conn;
 358         if ( !strcmp( psz_video_connection, "sdi" ) )
 359             conn = bmdVideoConnectionSDI;
 360         else if ( !strcmp( psz_video_connection, "hdmi" ) )
 361             conn = bmdVideoConnectionHDMI;
 362         else if ( !strcmp( psz_video_connection, "opticalsdi" ) )
 363             conn = bmdVideoConnectionOpticalSDI;
 364         else if ( !strcmp( psz_video_connection, "component" ) )
 365             conn = bmdVideoConnectionComponent;
 366         else if ( !strcmp( psz_video_connection, "composite" ) )
 367             conn = bmdVideoConnectionComposite;
 368         else if ( !strcmp( psz_video_connection, "svideo" ) )
 369             conn = bmdVideoConnectionSVideo;
 370         else
 371         {
 372             msg_Err( p_demux, "Invalid --decklink-video-connection specified; choose one of " \
 373                               "sdi, hdmi, opticalsdi, component, composite, or svideo." );
 374             goto finish;
 375         }
 376
 377         msg_Dbg( p_demux, "Setting video input connection to 0x%x", conn);
 378         result = p_sys->p_config->SetInt( bmdDeckLinkConfigVideoInputConnection, conn );
 379         if( result != S_OK )
 380         {
 381             msg_Err( p_demux, "Failed to set video input connection" );
 382             goto finish;
 383         }
 384     }
 385
 386     psz_audio_connection = var_CreateGetNonEmptyString( p_demux, "decklink-audio-connection" );
 387     if( psz_audio_connection )
 388     {
 389         BMDAudioConnection conn;
 390         if ( !strcmp( psz_audio_connection, "embedded" ) )
 391             conn = bmdAudioConnectionEmbedded;
 392         else if ( !strcmp( psz_audio_connection, "aesebu" ) )
 393             conn = bmdAudioConnectionAESEBU;
 394         else if ( !strcmp( psz_audio_connection, "analog" ) )
 395             conn = bmdAudioConnectionAnalog;
 396         else
 397         {
 398             msg_Err( p_demux, "Invalid --decklink-audio-connection specified; choose one of " \
 399                               "embedded, aesebu, or analog." );
 400             goto finish;
 401         }
 402
 403         msg_Dbg( p_demux, "Setting audio input format to 0x%x", conn);
 404         result = p_sys->p_config->SetInt( bmdDeckLinkConfigAudioInputConnection, conn );
 405         if( result != S_OK )
 406         {
 407             msg_Err( p_demux, "Failed to set audio input connection" );
 408             goto finish;
 409         }
 410     }
 411
 412     /* Get the list of display modes. */
 413     result = p_sys->p_input->GetDisplayModeIterator( &p_display_iterator );
 414     if( result != S_OK )
 415     {
 416         msg_Err( p_demux, "Failed to enumerate display modes" );
 417         goto finish;
 418     }
 419
 420     psz_display_mode = var_CreateGetNonEmptyString( p_demux, "decklink-mode" );
 421     if( !psz_display_mode || strlen( psz_display_mode ) > 4 ) {
 422         msg_Err( p_demux, "Missing or invalid --decklink-mode string" );
 423         goto finish;
 424     }
 425
 426     /*
 427      * Pad the --decklink-mode string to four characters, so the user can specify e.g. "pal"
 428      * without having to add the trailing space.
 429      */
 430     char sz_display_mode_padded[5];
 431     strcpy(sz_display_mode_padded, "    ");
 432     for( int i = 0; i < strlen( psz_display_mode ); ++i )
 433         sz_display_mode_padded[i] = psz_display_mode[i];
 434
 435     BMDDisplayMode wanted_mode_id;
 436     memcpy( &wanted_mode_id, &sz_display_mode_padded, sizeof(wanted_mode_id) );
 437
 438     b_found_mode = false;
 439
 440     for (;;)
 441     {
 442         IDeckLinkDisplayMode *p_display_mode;
 443         result = p_display_iterator->Next( &p_display_mode );
 444         if( result != S_OK || !p_display_mode )
 445             break;
 446
 447         char sz_mode_id_text[5] = {0};
 448         BMDDisplayMode mode_id = ntohl( p_display_mode->GetDisplayMode() );
 449         memcpy( sz_mode_id_text, &mode_id, sizeof(mode_id) );
 450
 451         const char *psz_mode_name;
 452         result = p_display_mode->GetName( &psz_mode_name );
 453         if( result != S_OK )
 454         {
 455             msg_Err( p_demux, "Failed to get display mode name" );
 456             p_display_mode->Release();
 457             goto finish;
 458         }
 459
 460         BMDTimeValue frame_duration, time_scale;
 461         result = p_display_mode->GetFrameRate( &frame_duration, &time_scale );
 462         if( result != S_OK )
 463         {
 464             msg_Err( p_demux, "Failed to get frame rate" );
 465             p_display_mode->Release();
 466             goto finish;
 467         }
 468
 469         const char *psz_field_dominance;
 470         uint32_t i_dominance_flags = 0;
 471         switch( p_display_mode->GetFieldDominance() )
 472         {
 473         case bmdProgressiveFrame:
 474             psz_field_dominance = "";
 475             break;
 476         case bmdProgressiveSegmentedFrame:
 477             psz_field_dominance = ", segmented";
 478             break;
 479         case bmdLowerFieldFirst:
 480             psz_field_dominance = ", interlaced [BFF]";
 481             i_dominance_flags = BLOCK_FLAG_BOTTOM_FIELD_FIRST;
 482             break;
 483         case bmdUpperFieldFirst:
 484             psz_field_dominance = ", interlaced [TFF]";
 485             i_dominance_flags = BLOCK_FLAG_TOP_FIELD_FIRST;
 486             break;
 487         case bmdUnknownFieldDominance:
 488         default:
 489             psz_field_dominance = ", unknown field dominance";
 490             break;
 491         }
 492
 493         msg_Dbg( p_demux, "Found mode '%s': %s (%dx%d, %.3f fps%s)",
 494                  sz_mode_id_text, psz_mode_name,
 495                  p_display_mode->GetWidth(), p_display_mode->GetHeight(),
 496                  double(time_scale) / frame_duration, psz_field_dominance );
 497
 498         if( wanted_mode_id == mode_id )
 499         {
 500             b_found_mode = true;
 501             i_width = p_display_mode->GetWidth();
 502             i_height = p_display_mode->GetHeight();
 503             i_fps_num = time_scale;
 504             i_fps_den = frame_duration;
 505             p_sys->i_dominance_flags = i_dominance_flags;
 506         }
 507
 508         p_display_mode->Release();
 509     }
 510
 511     if( !b_found_mode )
 512     {
 513         msg_Err( p_demux, "Unknown video mode specified. " \
 514                           "Run VLC with -v --verbose-objects=-all,+decklink " \
 515                           "to get a list of supported modes." );
 516         goto finish;
 517     }
 518
 519     result = p_sys->p_input->EnableVideoInput( htonl( wanted_mode_id ), bmdFormat8BitYUV, 0 );
 520     if( result != S_OK )
 521     {
 522         msg_Err( p_demux, "Failed to enable video input" );
 523         goto finish;
 524     }
 525
 526     /* Set up audio. */
 527     p_sys->i_channels = var_InheritInteger( p_demux, "decklink-audio-channels" );
 528     i_rate = var_InheritInteger( p_demux, "decklink-audio-rate" );
 529     if( i_rate > 0 && p_sys->i_channels > 0 )
 530     {
 531         result = p_sys->p_input->EnableAudioInput( i_rate, bmdAudioSampleType16bitInteger, p_sys->i_channels );
 532         if( result != S_OK )
 533         {
 534             msg_Err( p_demux, "Failed to enable audio input" );
 535             goto finish;
 536         }
 537     }
 538
 539     p_sys->p_delegate = new DeckLinkCaptureDelegate( p_demux );
 540     p_sys->p_input->SetCallback( p_sys->p_delegate );
 541
 542     result = p_sys->p_input->StartStreams();
 543     if( result != S_OK )
 544     {
 545         msg_Err( p_demux, "Could not start streaming from SDI card. This could be caused "
 546                           "by invalid video mode or flags, access denied, or card already in use." );
 547         goto finish;
 548     }
 549
 550     /* Declare elementary streams */
 551     es_format_t video_fmt;
 552     es_format_Init( &video_fmt, VIDEO_ES, VLC_CODEC_UYVY );
 553     video_fmt.video.i_width = i_width;
 554     video_fmt.video.i_height = i_height;
 555     video_fmt.video.i_sar_num = 1;
 556     video_fmt.video.i_sar_den = 1;
 557     video_fmt.video.i_frame_rate = i_fps_num;
 558     video_fmt.video.i_frame_rate_base = i_fps_den;
 559     video_fmt.i_bitrate = video_fmt.video.i_width * video_fmt.video.i_height * video_fmt.video.i_frame_rate * 2 * 8;
 560
 561     if ( !var_InheritURational( p_demux, &u_aspect_num, &u_aspect_den, "decklink-aspect-ratio" ) &&
 562          u_aspect_num > 0 && u_aspect_den > 0 ) {
 563         video_fmt.video.i_sar_num = u_aspect_num * video_fmt.video.i_height;
 564         video_fmt.video.i_sar_den = u_aspect_den * video_fmt.video.i_width;
 565     }
 566
 567     msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
 568              (char*)&video_fmt.i_codec, video_fmt.video.i_width, video_fmt.video.i_height );
 569     p_sys->p_video_es = es_out_Add( p_demux->out, &video_fmt );
 570
 571     es_format_t audio_fmt;
 572     es_format_Init( &audio_fmt, AUDIO_ES, VLC_CODEC_S16N );
 573     audio_fmt.audio.i_channels = p_sys->i_channels;
 574     audio_fmt.audio.i_rate = i_rate;
 575     audio_fmt.audio.i_bitspersample = 16;
 576     audio_fmt.audio.i_blockalign = audio_fmt.audio.i_channels * audio_fmt.audio.i_bitspersample / 8;
 577     audio_fmt.i_bitrate = audio_fmt.audio.i_channels * audio_fmt.audio.i_rate * audio_fmt.audio.i_bitspersample;
 578
 579     msg_Dbg( p_demux, "added new audio es %4.4s %dHz %dbpp %dch",
 580              (char*)&audio_fmt.i_codec, audio_fmt.audio.i_rate, audio_fmt.audio.i_bitspersample, audio_fmt.audio.i_channels);
 581     p_sys->p_audio_es = es_out_Add( p_demux->out, &audio_fmt );
 582
 583     ret = VLC_SUCCESS;
 584
 585 finish:
 586     if( decklink_iterator )
 587         decklink_iterator->Release();
 588
 589     free( psz_video_connection );
 590     free( psz_audio_connection );
 591     free( psz_display_mode );
 592
 593     if( p_display_iterator )
 594         p_display_iterator->Release();
 595
 596     if( ret != VLC_SUCCESS )
 597         Close( p_this );
 598
 599     return ret;
 600 }
 601
 602 static void Close( vlc_object_t *p_this )
 603 {
 604     demux_t     *p_demux = (demux_t *)p_this;
 605     demux_sys_t *p_sys   = p_demux->p_sys;
 606
 607     if( p_sys->p_config )
 608         p_sys->p_config->Release();
 609
 610     if( p_sys->p_input )
 611     {
 612         p_sys->p_input->StopStreams();
 613         p_sys->p_input->Release();
 614     }
 615
 616     if( p_sys->p_card )
 617         p_sys->p_card->Release();
 618
 619     if( p_sys->p_delegate )
 620         p_sys->p_delegate->Release();
 621
 622     vlc_mutex_destroy( &p_sys->pts_lock );
 623     free( p_sys );
 624 }
 625
 626 static int Control( demux_t *p_demux, int i_query, va_list args )
 627 {
 628     demux_sys_t *p_sys = p_demux->p_sys;
 629     bool *pb;
 630     int64_t    *pi64;
 631
 632     switch( i_query )
 633     {
 634         /* Special for access_demux */
 635         case DEMUX_CAN_PAUSE:
 636         case DEMUX_CAN_SEEK:
 637         case DEMUX_CAN_CONTROL_PACE:
 638             pb = (bool*)va_arg( args, bool * );
 639             *pb = false;
 640             return VLC_SUCCESS;
 641
 642         case DEMUX_GET_PTS_DELAY:
 643             pi64 = (int64_t*)va_arg( args, int64_t * );
 644             *pi64 =
 645                 INT64_C(1000) * var_InheritInteger( p_demux, "live-caching" );
 646             return VLC_SUCCESS;
 647
 648         case DEMUX_GET_TIME:
 649             pi64 = (int64_t*)va_arg( args, int64_t * );
 650             vlc_mutex_lock( &p_sys->pts_lock );
 651             *pi64 = p_sys->i_last_pts;
 652             vlc_mutex_unlock( &p_sys->pts_lock );
 653             return VLC_SUCCESS;
 654
 655         default:
 656             return VLC_EGENERIC;
 657     }
 658
 659     return VLC_EGENERIC;
 660 }