--- /dev/null
+/* BlackMagic SDI driver */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifndef INT64_C
+#define INT64_C(c) c ## LL
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_input.h>
+#include <vlc_demux.h>
+#include <vlc_access.h>
+#include <vlc_picture.h>
+#include <vlc_charset.h>
+#include <vlc_fs.h>
+
+#include "DeckLinkAPI.h"
+#include "DeckLinkAPIDispatch.cpp"
+
+static int Open ( vlc_object_t * );
+static void Close( vlc_object_t * );
+
+#define CACHING_TEXT N_("Caching value in ms")
+#define CACHING_LONGTEXT N_( \
+ "Caching value for SDI captures. This " \
+ "value should be set in milliseconds." )
+
+vlc_module_begin ()
+ set_shortname( N_("SDI") )
+ set_description( N_("BlackMagic SDI input") )
+ set_category( CAT_INPUT )
+ set_subcategory( SUBCAT_INPUT_ACCESS )
+
+ add_integer( "sdi-caching", DEFAULT_PTS_DELAY / 1000, NULL,
+ CACHING_TEXT, CACHING_LONGTEXT, true )
+
+ add_shortcut( "sdi" )
+ set_capability( "access_demux", 10 )
+ set_callbacks( Open, Close )
+vlc_module_end ()
+
+static int Demux ( demux_t * );
+static int Control( demux_t *, int, va_list );
+
+class DeckLinkCaptureDelegate;
+
+struct demux_sys_t
+{
+ IDeckLink *p_card;
+ IDeckLinkInput *p_input;
+ DeckLinkCaptureDelegate *p_delegate;
+ es_out_id_t *p_es;
+
+ vlc_mutex_t frame_lock;
+ block_t *p_frame; // protected by <frame_lock>
+ vlc_cond_t has_frame; // related to <frame_lock>
+};
+
+class DeckLinkCaptureDelegate : public IDeckLinkInputCallback
+{
+public:
+ DeckLinkCaptureDelegate( demux_t *p_demux ) : p_demux_(p_demux) {}
+
+ // FIXME: These leak.
+ virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
+ virtual ULONG STDMETHODCALLTYPE AddRef(void) { return 1; }
+ virtual ULONG STDMETHODCALLTYPE Release(void) { return 1; }
+
+ virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags);
+ virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);
+
+private:
+ demux_t *p_demux_;
+};
+
+HRESULT DeckLinkCaptureDelegate::VideoInputFormatChanged(BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode *mode, BMDDetectedVideoInputFormatFlags)
+{
+ msg_Dbg( p_demux_, "Video input format changed" );
+ return S_OK;
+}
+
+HRESULT DeckLinkCaptureDelegate::VideoInputFrameArrived(IDeckLinkVideoInputFrame* videoFrame, IDeckLinkAudioInputPacket* audioFrame)
+{
+ demux_sys_t *p_sys = p_demux_->p_sys;
+
+ if(videoFrame)
+ {
+ if(videoFrame->GetFlags() & bmdFrameHasNoInputSource)
+ {
+ msg_Warn( p_demux_, "No input signal detected" );
+ return S_OK;
+ }
+
+ block_t *p_frame;
+ p_frame = block_New( p_demux_, 720 * 576 * 3 );
+ if( !p_frame )
+ {
+ msg_Err( p_demux_, "Could not allocate memory for frame" );
+ return S_OK;
+ }
+
+ void *frame_bytes;
+ videoFrame->GetBytes( &frame_bytes );
+ memcpy( p_frame->p_buffer, frame_bytes, 720 * 576 * 3 );
+
+ BMDTimeValue stream_time, frame_duration;
+ videoFrame->GetStreamTime( &stream_time, &frame_duration, 1000000 );
+ p_frame->i_pts = stream_time + frame_duration; // FIXME: hack to avoid i_pts=0?
+
+ vlc_mutex_lock( &p_sys->frame_lock );
+ p_sys->p_frame = p_frame; // FIXME: leak
+ vlc_cond_signal( &p_sys->has_frame );
+ vlc_mutex_unlock( &p_sys->frame_lock );
+ }
+
+ return S_OK;
+}
+
+static int Open( vlc_object_t *p_this )
+{
+ demux_t *p_demux = (demux_t*)p_this;
+ demux_sys_t *p_sys;
+
+ /* Only when selected */
+ if( *p_demux->psz_access == '\0' )
+ return VLC_EGENERIC;
+
+ /* Set up p_demux */
+ p_demux->pf_demux = Demux;
+ p_demux->pf_control = Control;
+ p_demux->info.i_update = 0;
+ p_demux->info.i_title = 0;
+ p_demux->info.i_seekpoint = 0;
+ p_demux->p_sys = p_sys = (demux_sys_t*)calloc( 1, sizeof( demux_sys_t ) );
+ if( !p_sys )
+ return VLC_ENOMEM;
+
+ vlc_mutex_init( &p_sys->frame_lock );
+ vlc_cond_init( &p_sys->has_frame );
+ p_sys->p_frame = NULL;
+
+ IDeckLinkIterator *decklink_iterator = CreateDeckLinkIteratorInstance();
+ if( !decklink_iterator )
+ {
+ msg_Err( p_demux, "DeckLink drivers not found." );
+ // FIXME: Leak here and several other error paths.
+ return VLC_EGENERIC;
+ }
+
+ HRESULT result;
+ result = decklink_iterator->Next( &p_sys->p_card );
+
+ if( result != S_OK )
+ {
+ msg_Err( p_demux, "No DeckLink PCI cards found" );
+ return VLC_EGENERIC;
+ }
+
+ if( p_sys->p_card->QueryInterface(IID_IDeckLinkInput, (void**)&p_sys->p_input) != S_OK )
+ {
+ msg_Err( p_demux, "Card has no inputs" );
+ return VLC_EGENERIC;
+ }
+
+ p_sys->p_delegate = new DeckLinkCaptureDelegate( p_demux );
+ p_sys->p_input->SetCallback( p_sys->p_delegate );
+
+ result = p_sys->p_input->EnableVideoInput(bmdModePAL, bmdFormat8BitYUV, 0);
+ if( result != S_OK )
+ {
+ msg_Err( p_demux, "Failed to enable video input" );
+ return VLC_EGENERIC;
+ }
+
+ // FIXME: add audio
+ result = p_sys->p_input->StartStreams();
+ if( result != S_OK )
+ {
+ msg_Err( p_demux, "Failed to start streams" );
+ return VLC_EGENERIC;
+ }
+
+ /*eDeclare elementary streams */
+ es_format_t fmt;
+ es_format_Init( &fmt, VIDEO_ES, VLC_CODEC_UYVY );
+ fmt.video.i_width = 720;
+ fmt.video.i_height = 576;
+ fmt.video.i_sar_num = 16 * fmt.video.i_height;
+ fmt.video.i_sar_den = 9 * fmt.video.i_width;
+ fmt.video.i_frame_rate = 25;
+ fmt.video.i_frame_rate_base = 1;
+
+ msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
+ (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
+ p_sys->p_es = es_out_Add( p_demux->out, &fmt );
+
+ /* Update default_pts to a suitable value for access */
+ var_Create( p_demux, "sdi-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+
+ return VLC_SUCCESS;
+}
+
+static void Close( vlc_object_t *p_this )
+{
+ demux_t *p_demux = (demux_t *)p_this;
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ free( p_sys );
+}
+
+static int Control( demux_t *p_demux, int i_query, va_list args )
+{
+ bool *pb;
+ int64_t *pi64;
+
+ switch( i_query )
+ {
+ /* Special for access_demux */
+ case DEMUX_CAN_PAUSE:
+ case DEMUX_CAN_SEEK:
+ case DEMUX_CAN_CONTROL_PACE:
+ pb = (bool*)va_arg( args, bool * );
+ *pb = false;
+ return VLC_SUCCESS;
+
+ case DEMUX_GET_PTS_DELAY:
+ pi64 = (int64_t*)va_arg( args, int64_t * );
+ *pi64 = var_GetInteger( p_demux, "sdi-caching" ) * 1000;
+ return VLC_SUCCESS;
+
+ case DEMUX_GET_TIME:
+ pi64 = (int64_t*)va_arg( args, int64_t * );
+ *pi64 = mdate(); // FIXME
+ return VLC_SUCCESS;
+
+ /* TODO implement others */
+ default:
+ return VLC_EGENERIC;
+ }
+
+ return VLC_EGENERIC;
+}
+
+static int Demux( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ block_t *p_block;
+
+ vlc_mutex_lock( &p_sys->frame_lock );
+
+ while( !p_sys->p_frame )
+ vlc_cond_wait( &p_sys->has_frame, &p_sys->frame_lock );
+
+ p_block = p_sys->p_frame;
+ p_sys->p_frame = NULL;
+
+ vlc_mutex_unlock( &p_sys->frame_lock );
+
+ es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
+ es_out_Send( p_demux->out, p_sys->p_es, p_block );
+
+ return 1;
+}
+
projects / vlc / commitdiff