1 /*****************************************************************************
2 * decklink.cpp: BlackMagic DeckLink SDI input module
3 *****************************************************************************
4 * Copyright (C) 2010 Steinar H. Gunderson
6 * Authors: Steinar H. Gunderson <steinar+vlc@gunderson.no>
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.
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.
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
22 *****************************************************************************/
24 #define __STDC_CONSTANT_MACROS 1
30 #include <vlc_common.h>
31 #include <vlc_plugin.h>
32 #include <vlc_demux.h>
33 #include <vlc_atomic.h>
35 #include <arpa/inet.h>
37 #include <DeckLinkAPI.h>
38 #include <DeckLinkAPIDispatch.cpp>
40 static int Open ( vlc_object_t * );
41 static void Close( vlc_object_t * );
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." )
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\"." )
54 #define CACHING_TEXT N_("Caching value in ms")
55 #define CACHING_LONGTEXT N_( \
56 "Caching value for DeckLink captures. This " \
57 "value should be set in milliseconds." )
59 #define AUDIO_CONNECTION_TEXT N_("Audio connection")
60 #define AUDIO_CONNECTION_LONGTEXT N_( \
61 "Audio connection to use for DeckLink captures. " \
62 "Valid choices: embedded, aesebu, analog. " \
63 "Leave blank for card default." )
65 #define RATE_TEXT N_("Audio sampling rate in Hz")
66 #define RATE_LONGTEXT N_( \
67 "Audio sampling rate (in hertz) for DeckLink captures. " \
68 "0 disables audio input." )
70 #define CHANNELS_TEXT N_("Number of audio channels")
71 #define CHANNELS_LONGTEXT N_( \
72 "Number of input audio channels for DeckLink captures. " \
73 "Must be 2, 8 or 16. 0 disables audio input." )
75 #define VIDEO_CONNECTION_TEXT N_("Video connection")
76 #define VIDEO_CONNECTION_LONGTEXT N_( \
77 "Video connection to use for DeckLink captures. " \
78 "Valid choices: sdi, hdmi, opticalsdi, component, " \
79 "composite, svideo. " \
80 "Leave blank for card default." )
82 static const char *const ppsz_videoconns[] = {
83 "sdi", "hdmi", "opticalsdi", "component", "composite", "svideo"
85 static const char *const ppsz_videoconns_text[] = {
86 N_("SDI"), N_("HDMI"), N_("Optical SDI"), N_("Component"), N_("Composite"), N_("S-video")
89 #define ASPECT_RATIO_TEXT N_("Aspect ratio")
90 #define ASPECT_RATIO_LONGTEXT N_( \
91 "Aspect ratio (4:3, 16:9). Default assumes square pixels." )
94 set_shortname( N_("DeckLink") )
95 set_description( N_("Blackmagic DeckLink SDI input") )
96 set_category( CAT_INPUT )
97 set_subcategory( SUBCAT_INPUT_ACCESS )
99 add_integer( "decklink-card-index", 0,
100 CARD_INDEX_TEXT, CARD_INDEX_LONGTEXT, true )
101 add_string( "decklink-mode", "pal ",
102 MODE_TEXT, MODE_LONGTEXT, true )
103 add_integer( "decklink-caching", DEFAULT_PTS_DELAY / 1000,
104 CACHING_TEXT, CACHING_LONGTEXT, true )
105 add_string( "decklink-audio-connection", 0,
106 AUDIO_CONNECTION_TEXT, AUDIO_CONNECTION_LONGTEXT, true )
107 add_integer( "decklink-audio-rate", 48000,
108 RATE_TEXT, RATE_LONGTEXT, true )
109 add_integer( "decklink-audio-channels", 2,
110 CHANNELS_TEXT, CHANNELS_LONGTEXT, true )
111 add_string( "decklink-video-connection", 0,
112 VIDEO_CONNECTION_TEXT, VIDEO_CONNECTION_LONGTEXT, true )
113 change_string_list( ppsz_videoconns, ppsz_videoconns_text, 0 )
114 add_string( "decklink-aspect-ratio", NULL,
115 ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, true )
117 add_shortcut( "decklink" )
118 set_capability( "access_demux", 10 )
119 set_callbacks( Open, Close )
122 static int Control( demux_t *, int, va_list );
124 class DeckLinkCaptureDelegate;
129 IDeckLinkInput *p_input;
130 DeckLinkCaptureDelegate *p_delegate;
132 /* We need to hold onto the IDeckLinkConfiguration object, or our settings will not apply.
133 See section 2.4.15 of the Blackmagic Decklink SDK documentation. */
134 IDeckLinkConfiguration *p_config;
136 es_out_id_t *p_video_es;
137 es_out_id_t *p_audio_es;
139 vlc_mutex_t pts_lock;
140 int i_last_pts; /* protected by <pts_lock> */
142 uint32_t i_dominance_flags;
146 class DeckLinkCaptureDelegate : public IDeckLinkInputCallback
149 DeckLinkCaptureDelegate( demux_t *p_demux ) : p_demux_(p_demux)
151 vlc_atomic_set( &m_ref_, 1 );
154 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
156 virtual ULONG STDMETHODCALLTYPE AddRef(void)
158 return vlc_atomic_inc( &m_ref_ );
161 virtual ULONG STDMETHODCALLTYPE Release(void)
163 uintptr_t new_ref = vlc_atomic_dec( &m_ref_ );
169 virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags)
171 msg_Dbg( p_demux_, "Video input format changed" );
175 virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);
182 HRESULT DeckLinkCaptureDelegate::VideoInputFrameArrived(IDeckLinkVideoInputFrame* videoFrame, IDeckLinkAudioInputPacket* audioFrame)
184 demux_sys_t *p_sys = p_demux_->p_sys;
185 block_t *p_video_frame = NULL;
186 block_t *p_audio_frame = NULL;
190 if( videoFrame->GetFlags() & bmdFrameHasNoInputSource )
192 msg_Warn( p_demux_, "No input signal detected" );
196 const int i_width = videoFrame->GetWidth();
197 const int i_height = videoFrame->GetHeight();
198 const int i_stride = videoFrame->GetRowBytes();
201 p_video_frame = block_New( p_demux_, i_width * i_height * i_bpp );
204 msg_Err( p_demux_, "Could not allocate memory for video frame" );
209 videoFrame->GetBytes( &frame_bytes );
210 for( int y = 0; y < i_height; ++y )
212 const uint8_t *src = (const uint8_t *)frame_bytes + i_stride * y;
213 uint8_t *dst = p_video_frame->p_buffer + i_width * i_bpp * y;
214 memcpy( dst, src, i_width * i_bpp );
217 BMDTimeValue stream_time, frame_duration;
218 videoFrame->GetStreamTime( &stream_time, &frame_duration, CLOCK_FREQ );
219 p_video_frame->i_flags = BLOCK_FLAG_TYPE_I | p_sys->i_dominance_flags;
220 p_video_frame->i_pts = p_video_frame->i_dts = VLC_TS_0 + stream_time;
222 vlc_mutex_lock( &p_sys->pts_lock );
223 if( p_video_frame->i_pts > p_sys->i_last_pts )
224 p_sys->i_last_pts = p_video_frame->i_pts;
225 vlc_mutex_unlock( &p_sys->pts_lock );
227 es_out_Control( p_demux_->out, ES_OUT_SET_PCR, p_video_frame->i_pts );
228 es_out_Send( p_demux_->out, p_sys->p_video_es, p_video_frame );
233 const int i_bytes = audioFrame->GetSampleFrameCount() * sizeof(int16_t) * p_sys->i_channels;
235 p_audio_frame = block_New( p_demux_, i_bytes );
238 msg_Err( p_demux_, "Could not allocate memory for audio frame" );
240 block_Release( p_video_frame );
245 audioFrame->GetBytes( &frame_bytes );
246 memcpy( p_audio_frame->p_buffer, frame_bytes, i_bytes );
248 BMDTimeValue packet_time;
249 audioFrame->GetPacketTime( &packet_time, CLOCK_FREQ );
250 p_audio_frame->i_pts = p_audio_frame->i_dts = VLC_TS_0 + packet_time;
252 vlc_mutex_lock( &p_sys->pts_lock );
253 if( p_audio_frame->i_pts > p_sys->i_last_pts )
254 p_sys->i_last_pts = p_audio_frame->i_pts;
255 vlc_mutex_unlock( &p_sys->pts_lock );
256 if( p_audio_frame->i_pts > p_sys->i_last_pts )
258 es_out_Control( p_demux_->out, ES_OUT_SET_PCR, p_audio_frame->i_pts );
259 es_out_Send( p_demux_->out, p_sys->p_audio_es, p_audio_frame );
265 static int Open( vlc_object_t *p_this )
267 demux_t *p_demux = (demux_t*)p_this;
269 int ret = VLC_EGENERIC;
271 char *psz_display_mode = NULL;
272 char *psz_video_connection = NULL;
273 char *psz_audio_connection = NULL;
276 int i_width, i_height, i_fps_num, i_fps_den;
278 unsigned u_aspect_num, u_aspect_den;
280 /* Only when selected */
281 if( *p_demux->psz_access == '\0' )
285 p_demux->pf_demux = NULL;
286 p_demux->pf_control = Control;
287 p_demux->info.i_update = 0;
288 p_demux->info.i_title = 0;
289 p_demux->info.i_seekpoint = 0;
290 p_demux->p_sys = p_sys = (demux_sys_t*)calloc( 1, sizeof( demux_sys_t ) );
294 vlc_mutex_init( &p_sys->pts_lock );
296 IDeckLinkDisplayModeIterator *p_display_iterator = NULL;
298 IDeckLinkIterator *decklink_iterator = CreateDeckLinkIteratorInstance();
299 if( !decklink_iterator )
301 msg_Err( p_demux, "DeckLink drivers not found." );
307 i_card_index = var_InheritInteger( p_demux, "decklink-card-index" );
308 if( i_card_index < 0 )
310 msg_Err( p_demux, "Invalid card index %d", i_card_index );
314 for( int i = 0; i <= i_card_index; ++i )
317 p_sys->p_card->Release();
318 result = decklink_iterator->Next( &p_sys->p_card );
325 msg_Err( p_demux, "DeckLink PCI card %d not found", i_card_index );
329 const char *psz_model_name;
330 result = p_sys->p_card->GetModelName( &psz_model_name );
334 msg_Err( p_demux, "Could not get model name" );
338 msg_Dbg( p_demux, "Opened DeckLink PCI card %d (%s)", i_card_index, psz_model_name );
340 if( p_sys->p_card->QueryInterface( IID_IDeckLinkInput, (void**)&p_sys->p_input) != S_OK )
342 msg_Err( p_demux, "Card has no inputs" );
346 /* Set up the video and audio sources. */
347 if( p_sys->p_card->QueryInterface( IID_IDeckLinkConfiguration, (void**)&p_sys->p_config) != S_OK )
349 msg_Err( p_demux, "Failed to get configuration interface" );
353 psz_video_connection = var_InheritString( p_demux, "decklink-video-connection" );
354 if( psz_video_connection )
356 BMDVideoConnection conn;
357 if ( !strcmp( psz_video_connection, "sdi" ) )
358 conn = bmdVideoConnectionSDI;
359 else if ( !strcmp( psz_video_connection, "hdmi" ) )
360 conn = bmdVideoConnectionHDMI;
361 else if ( !strcmp( psz_video_connection, "opticalsdi" ) )
362 conn = bmdVideoConnectionOpticalSDI;
363 else if ( !strcmp( psz_video_connection, "component" ) )
364 conn = bmdVideoConnectionComponent;
365 else if ( !strcmp( psz_video_connection, "composite" ) )
366 conn = bmdVideoConnectionComposite;
367 else if ( !strcmp( psz_video_connection, "svideo" ) )
368 conn = bmdVideoConnectionSVideo;
371 msg_Err( p_demux, "Invalid --decklink-video-connection specified; choose one of " \
372 "sdi, hdmi, opticalsdi, component, composite, or svideo." );
376 msg_Dbg( p_demux, "Setting video input format to 0x%x", conn);
377 result = p_sys->p_config->SetInt( bmdDeckLinkConfigVideoInputConnection, conn );
380 msg_Err( p_demux, "Failed to set video input connection" );
385 psz_audio_connection = var_CreateGetNonEmptyString( p_demux, "decklink-audio-connection" );
386 if( psz_audio_connection )
388 BMDAudioConnection conn;
389 if ( !strcmp( psz_audio_connection, "embedded" ) )
390 conn = bmdAudioConnectionEmbedded;
391 else if ( !strcmp( psz_audio_connection, "aesebu" ) )
392 conn = bmdAudioConnectionAESEBU;
393 else if ( !strcmp( psz_audio_connection, "analog" ) )
394 conn = bmdAudioConnectionAnalog;
397 msg_Err( p_demux, "Invalid --decklink-audio-connection specified; choose one of " \
398 "embedded, aesebu, or analog." );
402 msg_Dbg( p_demux, "Setting audio input format to 0x%x", conn);
403 result = p_sys->p_config->SetInt( bmdDeckLinkConfigAudioInputConnection, conn );
406 msg_Err( p_demux, "Failed to set audio input connection" );
411 /* Get the list of display modes. */
412 result = p_sys->p_input->GetDisplayModeIterator( &p_display_iterator );
415 msg_Err( p_demux, "Failed to enumerate display modes" );
419 psz_display_mode = var_CreateGetNonEmptyString( p_demux, "decklink-mode" );
420 if( !psz_display_mode || strlen( psz_display_mode ) > 4 ) {
421 msg_Err( p_demux, "Missing or invalid --decklink-mode string" );
426 * Pad the --decklink-mode string to four characters, so the user can specify e.g. "pal"
427 * without having to add the trailing space.
429 char sz_display_mode_padded[5];
430 strcpy(sz_display_mode_padded, " ");
431 for( int i = 0; i < strlen( psz_display_mode ); ++i )
432 sz_display_mode_padded[i] = psz_display_mode[i];
434 BMDDisplayMode wanted_mode_id;
435 memcpy( &wanted_mode_id, &sz_display_mode_padded, sizeof(wanted_mode_id) );
437 b_found_mode = false;
441 IDeckLinkDisplayMode *p_display_mode;
442 result = p_display_iterator->Next( &p_display_mode );
443 if( result != S_OK || !p_display_mode )
446 char sz_mode_id_text[5] = {0};
447 BMDDisplayMode mode_id = ntohl( p_display_mode->GetDisplayMode() );
448 memcpy( sz_mode_id_text, &mode_id, sizeof(mode_id) );
450 const char *psz_mode_name;
451 result = p_display_mode->GetName( &psz_mode_name );
454 msg_Err( p_demux, "Failed to get display mode name" );
455 p_display_mode->Release();
459 BMDTimeValue frame_duration, time_scale;
460 result = p_display_mode->GetFrameRate( &frame_duration, &time_scale );
463 msg_Err( p_demux, "Failed to get frame rate" );
464 p_display_mode->Release();
468 const char *psz_field_dominance;
469 uint32_t i_dominance_flags = 0;
470 switch( p_display_mode->GetFieldDominance() )
472 case bmdProgressiveFrame:
473 psz_field_dominance = "";
475 case bmdProgressiveSegmentedFrame:
476 psz_field_dominance = ", segmented";
478 case bmdLowerFieldFirst:
479 psz_field_dominance = ", interlaced [BFF]";
480 i_dominance_flags = BLOCK_FLAG_BOTTOM_FIELD_FIRST;
482 case bmdUpperFieldFirst:
483 psz_field_dominance = ", interlaced [TFF]";
484 i_dominance_flags = BLOCK_FLAG_TOP_FIELD_FIRST;
486 case bmdUnknownFieldDominance:
488 psz_field_dominance = ", unknown field dominance";
492 msg_Dbg( p_demux, "Found mode '%s': %s (%dx%d, %.3f fps%s)",
493 sz_mode_id_text, psz_mode_name,
494 p_display_mode->GetWidth(), p_display_mode->GetHeight(),
495 double(time_scale) / frame_duration, psz_field_dominance );
497 if( wanted_mode_id == mode_id )
500 i_width = p_display_mode->GetWidth();
501 i_height = p_display_mode->GetHeight();
502 i_fps_num = time_scale;
503 i_fps_den = frame_duration;
504 p_sys->i_dominance_flags = i_dominance_flags;
507 p_display_mode->Release();
512 msg_Err( p_demux, "Unknown video mode specified. " \
513 "Run VLC with -v --verbose-objects=-all,+decklink " \
514 "to get a list of supported modes." );
518 result = p_sys->p_input->EnableVideoInput( htonl( wanted_mode_id ), bmdFormat8BitYUV, 0 );
521 msg_Err( p_demux, "Failed to enable video input" );
526 p_sys->i_channels = var_InheritInteger( p_demux, "decklink-audio-channels" );
527 i_rate = var_InheritInteger( p_demux, "decklink-audio-rate" );
528 if( i_rate > 0 && p_sys->i_channels > 0 )
530 result = p_sys->p_input->EnableAudioInput( i_rate, bmdAudioSampleType16bitInteger, p_sys->i_channels );
533 msg_Err( p_demux, "Failed to enable audio input" );
538 p_sys->p_delegate = new DeckLinkCaptureDelegate( p_demux );
539 p_sys->p_input->SetCallback( p_sys->p_delegate );
541 result = p_sys->p_input->StartStreams();
544 msg_Err( p_demux, "Could not start streaming from SDI card. This could be caused "
545 "by invalid video mode or flags, access denied, or card already in use." );
549 /* Declare elementary streams */
550 es_format_t video_fmt;
551 es_format_Init( &video_fmt, VIDEO_ES, VLC_CODEC_UYVY );
552 video_fmt.video.i_width = i_width;
553 video_fmt.video.i_height = i_height;
554 video_fmt.video.i_sar_num = 1;
555 video_fmt.video.i_sar_den = 1;
556 video_fmt.video.i_frame_rate = i_fps_num;
557 video_fmt.video.i_frame_rate_base = i_fps_den;
558 video_fmt.i_bitrate = video_fmt.video.i_width * video_fmt.video.i_height * video_fmt.video.i_frame_rate * 2 * 8;
560 if ( !var_InheritURational( p_demux, &u_aspect_num, &u_aspect_den, "decklink-aspect-ratio" ) &&
561 u_aspect_num > 0 && u_aspect_den > 0 ) {
562 video_fmt.video.i_sar_num = u_aspect_num * video_fmt.video.i_height;
563 video_fmt.video.i_sar_den = u_aspect_den * video_fmt.video.i_width;
566 msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
567 (char*)&video_fmt.i_codec, video_fmt.video.i_width, video_fmt.video.i_height );
568 p_sys->p_video_es = es_out_Add( p_demux->out, &video_fmt );
570 es_format_t audio_fmt;
571 es_format_Init( &audio_fmt, AUDIO_ES, VLC_CODEC_S16N );
572 audio_fmt.audio.i_channels = p_sys->i_channels;
573 audio_fmt.audio.i_rate = i_rate;
574 audio_fmt.audio.i_bitspersample = 16;
575 audio_fmt.audio.i_blockalign = audio_fmt.audio.i_channels * audio_fmt.audio.i_bitspersample / 8;
576 audio_fmt.i_bitrate = audio_fmt.audio.i_channels * audio_fmt.audio.i_rate * audio_fmt.audio.i_bitspersample;
578 msg_Dbg( p_demux, "added new audio es %4.4s %dHz %dbpp %dch",
579 (char*)&audio_fmt.i_codec, audio_fmt.audio.i_rate, audio_fmt.audio.i_bitspersample, audio_fmt.audio.i_channels);
580 p_sys->p_audio_es = es_out_Add( p_demux->out, &audio_fmt );
585 if( decklink_iterator )
586 decklink_iterator->Release();
588 free( psz_video_connection );
589 free( psz_audio_connection );
590 free( psz_display_mode );
592 if( p_display_iterator )
593 p_display_iterator->Release();
595 if( ret != VLC_SUCCESS )
601 static void Close( vlc_object_t *p_this )
603 demux_t *p_demux = (demux_t *)p_this;
604 demux_sys_t *p_sys = p_demux->p_sys;
606 if( p_sys->p_config )
607 p_sys->p_config->Release();
611 p_sys->p_input->StopStreams();
612 p_sys->p_input->Release();
616 p_sys->p_card->Release();
618 if( p_sys->p_delegate )
619 p_sys->p_delegate->Release();
621 vlc_mutex_destroy( &p_sys->pts_lock );
625 static int Control( demux_t *p_demux, int i_query, va_list args )
627 demux_sys_t *p_sys = p_demux->p_sys;
633 /* Special for access_demux */
634 case DEMUX_CAN_PAUSE:
636 case DEMUX_CAN_CONTROL_PACE:
637 pb = (bool*)va_arg( args, bool * );
641 case DEMUX_GET_PTS_DELAY:
642 pi64 = (int64_t*)va_arg( args, int64_t * );
643 *pi64 = var_InheritInteger( p_demux, "decklink-caching" ) * 1000;
647 pi64 = (int64_t*)va_arg( args, int64_t * );
648 vlc_mutex_lock( &p_sys->pts_lock );
649 *pi64 = p_sys->i_last_pts;
650 vlc_mutex_unlock( &p_sys->pts_lock );