#include <vlc_charset.h>
#include <vlc_fs.h>
+#include <arpa/inet.h>
+
#include "DeckLinkAPI.h"
#include "DeckLinkAPIDispatch.cpp"
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
+#define MODE_TEXT N_("Desired input video mode")
+#define MODE_LONGTEXT N_( \
+ "Desired input video mode for SDI captures. " \
+ "This value should be a FOURCC code in textual " \
+ "form, e.g. \"ntsc\"." )
+
#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( \
"Caching value for SDI captures. This " \
"value should be set in milliseconds." )
+#define RATE_TEXT N_("Audio sampling rate in Hz")
+#define RATE_LONGTEXT N_( \
+ "Audio sampling rate (in hertz) for SDI captures. " \
+ "0 disables audio input." )
+
+#define CHANNELS_TEXT N_("Number of audio channels")
+#define CHANNELS_LONGTEXT N_( \
+ "Number of input audio channels for SDI captures. " \
+ "Must be 2, 8 or 16. 0 disables audio input." )
+
vlc_module_begin ()
set_shortname( N_("SDI") )
set_description( N_("BlackMagic SDI input") )
set_category( CAT_INPUT )
set_subcategory( SUBCAT_INPUT_ACCESS )
-
+
+ add_string( "sdi-mode", "pal ", NULL,
+ MODE_TEXT, MODE_LONGTEXT, true )
add_integer( "sdi-caching", DEFAULT_PTS_DELAY / 1000, NULL,
CACHING_TEXT, CACHING_LONGTEXT, true )
+ add_integer( "sdi-audio-rate", 48000, NULL,
+ RATE_TEXT, RATE_LONGTEXT, true )
+ add_integer( "sdi-audio-channels", 2, NULL,
+ CHANNELS_TEXT, CHANNELS_LONGTEXT, true )
add_shortcut( "sdi" )
set_capability( "access_demux", 10 )
IDeckLink *p_card;
IDeckLinkInput *p_input;
DeckLinkCaptureDelegate *p_delegate;
+
es_out_id_t *p_video_es;
es_out_id_t *p_audio_es;
bool b_first_frame;
+ int i_width, i_height, i_fps_num, i_fps_den;
+ uint32_t i_dominance_flags;
+
+ int i_rate, i_channels;
+
vlc_mutex_t frame_lock;
block_t *p_video_frame; // protected by <frame_lock>
block_t *p_audio_frame; // protected by <frame_lock>
BMDTimeValue stream_time, frame_duration;
videoFrame->GetStreamTime( &stream_time, &frame_duration, CLOCK_FREQ );
- p_video_frame->i_flags = BLOCK_FLAG_TYPE_I;
+ p_video_frame->i_flags = BLOCK_FLAG_TYPE_I | p_sys->i_dominance_flags;
if( p_sys->b_first_frame )
{
p_video_frame->i_flags |= BLOCK_FLAG_DISCONTINUITY;
if( audioFrame )
{
- const int i_bytes = audioFrame->GetSampleFrameCount() * sizeof(int16_t) * 2;
+ const int i_bytes = audioFrame->GetSampleFrameCount() * sizeof(int16_t) * p_sys->i_channels;
p_audio_frame = block_New( p_demux_, i_bytes );
if( !p_audio_frame )
return VLC_EGENERIC;
}
- result = p_sys->p_input->EnableVideoInput( bmdModePAL, bmdFormat8BitYUV, 0 );
+ IDeckLinkDisplayModeIterator *p_display_iterator;
+ result = p_sys->p_input->GetDisplayModeIterator( &p_display_iterator );
if( result != S_OK )
{
- msg_Err( p_demux, "Failed to enable video input" );
+ msg_Err( p_demux, "Failed to enumerate display modes" );
return VLC_EGENERIC;
}
- result = p_sys->p_input->EnableAudioInput( 48000, bmdAudioSampleType16bitInteger, 2 );
+ char *mode_string = var_CreateGetString( p_demux, "sdi-mode" );
+ if( !mode_string || strlen( mode_string ) == 0 || strlen( mode_string ) > 4 ) {
+ msg_Err( p_demux, "Missing or invalid --sdi-mode string" );
+ return VLC_EGENERIC;
+ }
+
+ // Pad the --sdi-mode string to four characters, so the user can specify e.g. "pal"
+ // without having to add the trailing space.
+ char mode_string_padded[5];
+ strcpy(mode_string_padded, " ");
+ for( int i = 0; i < strlen(mode_string); ++i )
+ mode_string_padded[i] = mode_string[i];
+
+ BMDDisplayMode wanted_mode_id;
+ memcpy( &wanted_mode_id, &mode_string_padded, sizeof(wanted_mode_id) );
+
+ bool b_found_mode = false;
+
+ for (;;)
+ {
+ IDeckLinkDisplayMode *p_display_mode;
+ result = p_display_iterator->Next( &p_display_mode );
+ if( result != S_OK || !p_display_mode )
+ {
+ break;
+ }
+
+ char mode_id_text[5] = {0};
+ BMDDisplayMode mode_id = ntohl( p_display_mode->GetDisplayMode() );
+ memcpy( mode_id_text, &mode_id, sizeof(mode_id) );
+
+ const char *mode_name;
+ result = p_display_mode->GetName( &mode_name );
+ if( result != S_OK )
+ {
+ msg_Err( p_demux, "Failed to get display mode name" );
+ return VLC_EGENERIC;
+ }
+
+ BMDTimeValue frame_duration, time_scale;
+ result = p_display_mode->GetFrameRate( &frame_duration, &time_scale );
+ if( result != S_OK )
+ {
+ msg_Err( p_demux, "Failed to get frame rate" );
+ return VLC_EGENERIC;
+ }
+
+ const char *field_dominance;
+ uint32_t i_dominance_flags = 0;
+ switch( p_display_mode->GetFieldDominance() )
+ {
+ case bmdProgressiveFrame:
+ field_dominance = "";
+ break;
+ case bmdProgressiveSegmentedFrame:
+ field_dominance = ", segmented";
+ break;
+ case bmdLowerFieldFirst:
+ field_dominance = ", interlaced [BFF]";
+ i_dominance_flags = BLOCK_FLAG_BOTTOM_FIELD_FIRST;
+ break;
+ case bmdUpperFieldFirst:
+ field_dominance = ", interlaced [TFF]";
+ i_dominance_flags = BLOCK_FLAG_TOP_FIELD_FIRST;
+ break;
+ case bmdUnknownFieldDominance:
+ default:
+ field_dominance = ", unknown field dominance";
+ break;
+ }
+
+ char buf[256];
+ sprintf( buf, "Found mode '%s': %s (%dx%d, %.3f fps%s)",
+ mode_id_text, mode_name,
+ p_display_mode->GetWidth(), p_display_mode->GetHeight(),
+ double(time_scale) / frame_duration, field_dominance );
+ msg_Dbg( p_demux, buf );
+
+ if( wanted_mode_id == mode_id )
+ {
+ b_found_mode = true;
+ p_sys->i_width = p_display_mode->GetWidth();
+ p_sys->i_height = p_display_mode->GetHeight();
+ p_sys->i_fps_num = time_scale;
+ p_sys->i_fps_den = frame_duration;
+ p_sys->i_dominance_flags = i_dominance_flags;
+ }
+ }
+
+ if( !b_found_mode )
+ {
+ msg_Err( p_demux, "Unknown SDI mode specified. " \
+ "Run VLC with -v --verbose-objects=-all,+sdi " \
+ "to get a list of supported modes." );
+ return VLC_EGENERIC;
+ }
+
+ result = p_sys->p_input->EnableVideoInput( htonl( wanted_mode_id ), bmdFormat8BitYUV, 0 );
if( result != S_OK )
{
- msg_Err( p_demux, "Failed to enable audio input" );
+ msg_Err( p_demux, "Failed to enable video input" );
return VLC_EGENERIC;
}
-
+
+ p_sys->i_rate = var_CreateGetInteger( p_demux, "sdi-audio-rate" );
+ p_sys->i_channels = var_CreateGetInteger( p_demux, "sdi-audio-channels" );
+ if( p_sys->i_rate > 0 && p_sys->i_channels > 0 )
+ {
+ result = p_sys->p_input->EnableAudioInput( p_sys->i_rate, bmdAudioSampleType16bitInteger, p_sys->i_channels );
+ if( result != S_OK )
+ {
+ msg_Err( p_demux, "Failed to enable audio input" );
+ return VLC_EGENERIC;
+ }
+ }
+
p_sys->p_delegate = new DeckLinkCaptureDelegate( p_demux );
p_sys->p_input->SetCallback( p_sys->p_delegate );
/* Declare elementary streams */
es_format_t video_fmt;
es_format_Init( &video_fmt, VIDEO_ES, VLC_CODEC_UYVY );
- video_fmt.video.i_width = 720;
- video_fmt.video.i_height = 576;
+ video_fmt.video.i_width = p_sys->i_width;
+ video_fmt.video.i_height = p_sys->i_height;
video_fmt.video.i_sar_num = 16 * video_fmt.video.i_height;
video_fmt.video.i_sar_den = 9 * video_fmt.video.i_width;
- video_fmt.video.i_frame_rate = 25;
- video_fmt.video.i_frame_rate_base = 1;
+ video_fmt.video.i_frame_rate = p_sys->i_fps_num;
+ video_fmt.video.i_frame_rate_base = p_sys->i_fps_den;
video_fmt.i_bitrate = video_fmt.video.i_width * video_fmt.video.i_height * video_fmt.video.i_frame_rate * 2;
msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
es_format_t audio_fmt;
es_format_Init( &audio_fmt, AUDIO_ES, VLC_CODEC_S16N );
- audio_fmt.audio.i_channels = 2;
- audio_fmt.audio.i_rate = 48000;
+ audio_fmt.audio.i_channels = p_sys->i_channels;
+ audio_fmt.audio.i_rate = p_sys->i_rate;
audio_fmt.audio.i_bitspersample = 16;
audio_fmt.audio.i_blockalign = audio_fmt.audio.i_channels * audio_fmt.audio.i_bitspersample / 8;
audio_fmt.i_bitrate = audio_fmt.audio.i_channels * audio_fmt.audio.i_rate * audio_fmt.audio.i_bitspersample;