1 /* BlackMagic SDI driver */
8 #define INT64_C(c) c ## LL
11 #include <vlc_common.h>
12 #include <vlc_plugin.h>
13 #include <vlc_input.h>
14 #include <vlc_demux.h>
15 #include <vlc_access.h>
16 #include <vlc_picture.h>
17 #include <vlc_charset.h>
20 #include "DeckLinkAPI.h"
21 #include "DeckLinkAPIDispatch.cpp"
23 static int Open ( vlc_object_t * );
24 static void Close( vlc_object_t * );
26 #define CACHING_TEXT N_("Caching value in ms")
27 #define CACHING_LONGTEXT N_( \
28 "Caching value for SDI captures. This " \
29 "value should be set in milliseconds." )
32 set_shortname( N_("SDI") )
33 set_description( N_("BlackMagic SDI input") )
34 set_category( CAT_INPUT )
35 set_subcategory( SUBCAT_INPUT_ACCESS )
37 add_integer( "sdi-caching", DEFAULT_PTS_DELAY / 1000, NULL,
38 CACHING_TEXT, CACHING_LONGTEXT, true )
41 set_capability( "access_demux", 10 )
42 set_callbacks( Open, Close )
45 static int Demux ( demux_t * );
46 static int Control( demux_t *, int, va_list );
48 class DeckLinkCaptureDelegate;
53 IDeckLinkInput *p_input;
54 DeckLinkCaptureDelegate *p_delegate;
57 vlc_mutex_t frame_lock;
58 block_t *p_frame; // protected by <frame_lock>
59 vlc_cond_t has_frame; // related to <frame_lock>
62 class DeckLinkCaptureDelegate : public IDeckLinkInputCallback
65 DeckLinkCaptureDelegate( demux_t *p_demux ) : p_demux_(p_demux) {}
68 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
69 virtual ULONG STDMETHODCALLTYPE AddRef(void) { return 1; }
70 virtual ULONG STDMETHODCALLTYPE Release(void) { return 1; }
72 virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags);
73 virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);
79 HRESULT DeckLinkCaptureDelegate::VideoInputFormatChanged(BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode *mode, BMDDetectedVideoInputFormatFlags)
81 msg_Dbg( p_demux_, "Video input format changed" );
85 HRESULT DeckLinkCaptureDelegate::VideoInputFrameArrived(IDeckLinkVideoInputFrame* videoFrame, IDeckLinkAudioInputPacket* audioFrame)
87 demux_sys_t *p_sys = p_demux_->p_sys;
91 if( videoFrame->GetFlags() & bmdFrameHasNoInputSource )
93 msg_Warn( p_demux_, "No input signal detected" );
97 const int i_width = videoFrame->GetWidth();
98 const int i_height = videoFrame->GetHeight();
99 const int i_stride = videoFrame->GetRowBytes();
103 p_frame = block_New( p_demux_, i_width * i_height * i_bpp );
106 msg_Err( p_demux_, "Could not allocate memory for frame" );
111 videoFrame->GetBytes( &frame_bytes );
112 for( int y = 0; y < i_height; ++y )
114 const uint8_t *src = (const uint8_t *)frame_bytes + i_stride * y;
115 uint8_t *dst = (uint8_t *)p_frame->p_buffer + i_width * i_bpp * y;
116 memcpy( dst, src, i_width * i_bpp );
119 BMDTimeValue stream_time, frame_duration;
120 videoFrame->GetStreamTime( &stream_time, &frame_duration, CLOCK_FREQ );
121 p_frame->i_pts = VLC_TS_0 + stream_time;
123 vlc_mutex_lock( &p_sys->frame_lock );
124 p_sys->p_frame = p_frame; // FIXME: leak
125 vlc_cond_signal( &p_sys->has_frame );
126 vlc_mutex_unlock( &p_sys->frame_lock );
132 static int Open( vlc_object_t *p_this )
134 demux_t *p_demux = (demux_t*)p_this;
137 /* Only when selected */
138 if( *p_demux->psz_access == '\0' )
142 p_demux->pf_demux = Demux;
143 p_demux->pf_control = Control;
144 p_demux->info.i_update = 0;
145 p_demux->info.i_title = 0;
146 p_demux->info.i_seekpoint = 0;
147 p_demux->p_sys = p_sys = (demux_sys_t*)calloc( 1, sizeof( demux_sys_t ) );
151 vlc_mutex_init( &p_sys->frame_lock );
152 vlc_cond_init( &p_sys->has_frame );
153 p_sys->p_frame = NULL;
155 IDeckLinkIterator *decklink_iterator = CreateDeckLinkIteratorInstance();
156 if( !decklink_iterator )
158 msg_Err( p_demux, "DeckLink drivers not found." );
159 // FIXME: Leak here and several other error paths.
164 result = decklink_iterator->Next( &p_sys->p_card );
168 msg_Err( p_demux, "No DeckLink PCI cards found" );
172 if( p_sys->p_card->QueryInterface( IID_IDeckLinkInput, (void**)&p_sys->p_input) != S_OK )
174 msg_Err( p_demux, "Card has no inputs" );
178 p_sys->p_delegate = new DeckLinkCaptureDelegate( p_demux );
179 p_sys->p_input->SetCallback( p_sys->p_delegate );
181 result = p_sys->p_input->EnableVideoInput( bmdModePAL, bmdFormat8BitYUV, 0 );
184 msg_Err( p_demux, "Failed to enable video input" );
189 result = p_sys->p_input->StartStreams();
192 msg_Err( p_demux, "Failed to start streams" );
196 /*eDeclare elementary streams */
198 es_format_Init( &fmt, VIDEO_ES, VLC_CODEC_UYVY );
199 fmt.video.i_width = 720;
200 fmt.video.i_height = 576;
201 fmt.video.i_sar_num = 16 * fmt.video.i_height;
202 fmt.video.i_sar_den = 9 * fmt.video.i_width;
203 fmt.video.i_frame_rate = 25;
204 fmt.video.i_frame_rate_base = 1;
206 msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
207 (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
208 p_sys->p_es = es_out_Add( p_demux->out, &fmt );
210 /* Update default_pts to a suitable value for access */
211 var_Create( p_demux, "sdi-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
216 static void Close( vlc_object_t *p_this )
218 demux_t *p_demux = (demux_t *)p_this;
219 demux_sys_t *p_sys = p_demux->p_sys;
224 static int Control( demux_t *p_demux, int i_query, va_list args )
231 /* Special for access_demux */
232 case DEMUX_CAN_PAUSE:
234 case DEMUX_CAN_CONTROL_PACE:
235 pb = (bool*)va_arg( args, bool * );
239 case DEMUX_GET_PTS_DELAY:
240 pi64 = (int64_t*)va_arg( args, int64_t * );
241 *pi64 = var_GetInteger( p_demux, "sdi-caching" ) * 1000;
245 pi64 = (int64_t*)va_arg( args, int64_t * );
246 *pi64 = mdate(); // FIXME
249 /* TODO implement others */
257 static int Demux( demux_t *p_demux )
259 demux_sys_t *p_sys = p_demux->p_sys;
262 vlc_mutex_lock( &p_sys->frame_lock );
264 while( !p_sys->p_frame )
265 vlc_cond_wait( &p_sys->has_frame, &p_sys->frame_lock );
267 p_block = p_sys->p_frame;
268 p_sys->p_frame = NULL;
270 vlc_mutex_unlock( &p_sys->frame_lock );
272 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
273 es_out_Send( p_demux->out, p_sys->p_es, p_block );