2 * Copyright (C) 2011 David Schleef <ds@entropywave.com>
3 * Copyright (C) 2014 Sebastian Dröge <sebastian@centricular.com>
4 * Copyright (C) 2015 Florian Langlois <florian.langlois@fr.thalesgroup.com>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
19 * Boston, MA 02110-1335, USA.
22 * SECTION:element-decklinkvideosrc
23 * @short_description: Inputs Video from a BlackMagic DeckLink Device
25 * Capture Video from a BlackMagic DeckLink Device.
30 * decklinkvideosrc device-number=0 connection=sdi mode=1080p25 ! \
33 * Capturing 1080p25 video from the SDI-In of Card 0. Devices are numbered
37 * Certain DechLink Cards like the Duo2 or the Quad2 contain two or four
38 * independent SDI units with two connectors each. These units can operate either
39 * in half- or in full-duplex mode.
41 * The Duplex-Mode of a Card can be configured using the `duplex-mode`-Property.
42 * Cards that to not support Duplex-Modes are not influenced by the property.
44 * ## Half-Duplex-Mode (default):
45 * By default decklinkvideosrc will configure them into half-duplex mode, so that
46 * each connector acts as if it were an independent DeckLink Card which can either
47 * be used as an Input or as an Output. In this mode the Duo2 can be used as as 4 SDI
48 * In-/Outputs and the Quad2 as 8 SDI In-/Outputs.
52 * decklinkvideosrc device-number=0 mode=1080p25 ! c. \
53 * decklinkvideosrc device-number=1 mode=1080p25 ! c. \
54 * decklinkvideosrc device-number=2 mode=1080p25 ! c. \
55 * decklinkvideosrc device-number=3 mode=1080p25 ! c. \
57 * sink_0::xpos=0 sink_0::ypos=0 sink_0::width=960 sink_0::height=540 \
58 * sink_1::xpos=960 sink_1::ypos=0 sink_1::width=960 sink_1::height=540 \
59 * sink_2::xpos=0 sink_2::ypos=540 sink_2::width=960 sink_2::height=540 \
60 * sink_3::xpos=960 sink_3::ypos=540 sink_3::width=960 sink_3::height=540 ! \
61 * video/x-raw,width=1920,height=1080 ! \
64 * Capture 1080p25 from the first 4 units in the System (ie. the 4 Connectors of
65 * a Duo2 Card) and compose them into a 2x2 grid.
69 * videotestsrc foreground-color=0x0000ff00 ! decklinkvideosink device-number=0 mode=1080p25 \
70 * decklinkvideosrc device-number=1 mode=1080p25 ! autovideosink \
71 * decklinkvideosrc device-number=2 mode=1080p25 ! autovideosink \
72 * videotestsrc foreground-color=0x00ff0000 ! decklinkvideosink device-number=3 mode=1080p25
74 * Capture 1080p25 from the second and third unit in the System,
75 * Playout a Test-Screen with colored Snow on the first and fourth unit
76 * (ie. the Connectors 1-4 of a Duo2 unit).
78 * ## Device-Number-Mapping in Half-Duplex-Mode
79 * The device-number to connector-mapping in half-duplex-mode is as follows for the Duo2
80 * - `device-number=0` SDI1
81 * - `device-number=1` SDI3
82 * - `device-number=2` SDI2
83 * - `device-number=3` SDI4
86 * - `device-number=0` SDI1
87 * - `device-number=1` SDI3
88 * - `device-number=2` SDI5
89 * - `device-number=3` SDI7
90 * - `device-number=4` SDI2
91 * - `device-number=5` SDI4
92 * - `device-number=6` SDI6
93 * - `device-number=7` SDI8
95 * ## Full-Duplex-Mode:
96 * When operating in full-duplex mode, two connectors of a unit are combined to
97 * a single device, performing extra processing with the second connection.
99 * This mode is most useful for Playout. See @decklinkvideosink.
100 * For Capturing the options are as follows:
102 * When capturing from a duplex-unit, the secondary port outputs the captured image
106 * decklinkvideosrc device-number=0 mode=1080p25 duplex-mode=full ! \
110 * When simultaneously capturing and playing out onto the same device, the
111 * secondary port outputs the played out video. Note, that this can also be
112 * achieved using half-duplex mode.
115 * decklinkvideosrc device-number=0 mode=1080p25 duplex-mode=full ! \
116 * videoflip video-direction=vert ! \
117 * decklinkvideosink device-number=0 mode=1080p25 duplex-mode=full
119 * Capturing Video on the primary port of device 0, output flipped version of the
120 * video on secondary port of the same device.
122 * ## Device-Number-Mapping in Full-Duplex-Mode
123 * The device-number to connector-mapping in full-duplex-mode is as follows for the Duo2
124 * - `device-number=0` SDI1 primary, SDI2 secondary
125 * - `device-number=1` SDI3 primaty, SDI4 secondary
128 * - `device-number=0` SDI1 primary, SDI2 secondary
129 * - `device-number=1` SDI3 primaty, SDI4 secondary
130 * - `device-number=2` SDI5 primary, SDI6 secondary
131 * - `device-number=3` SDI7 primary, SDI8 secondary
138 #include "gstdecklinkvideosrc.h"
141 GST_DEBUG_CATEGORY_STATIC (gst_decklink_video_src_debug);
142 #define GST_CAT_DEFAULT gst_decklink_video_src_debug
144 #define DEFAULT_MODE (GST_DECKLINK_MODE_AUTO)
145 #define DEFAULT_CONNECTION (GST_DECKLINK_CONNECTION_AUTO)
146 #define DEFAULT_BUFFER_SIZE (5)
147 #define DEFAULT_OUTPUT_STREAM_TIME (FALSE)
148 #define DEFAULT_SKIP_FIRST_TIME (0)
149 #define DEFAULT_DROP_NO_SIGNAL_FRAMES (FALSE)
150 #define DEFAULT_OUTPUT_CC (FALSE)
151 #define DEFAULT_OUTPUT_AFD_BAR (FALSE)
154 #define ABSDIFF(x, y) ( (x) > (y) ? ((x) - (y)) : ((y) - (x)) )
166 PROP_TIMECODE_FORMAT,
167 PROP_OUTPUT_STREAM_TIME,
168 PROP_SKIP_FIRST_TIME,
169 PROP_DROP_NO_SIGNAL_FRAMES,
171 PROP_HW_SERIAL_NUMBER,
178 IDeckLinkVideoInputFrame *frame;
179 GstClockTime timestamp, duration;
180 GstClockTime stream_timestamp;
181 GstClockTime stream_duration;
182 GstClockTime hardware_timestamp;
183 GstClockTime hardware_duration;
184 GstDecklinkModeEnum mode;
185 BMDPixelFormat format;
186 GstVideoTimeCode *tc;
191 capture_frame_clear (CaptureFrame * frame)
194 frame->frame->Release ();
196 gst_video_time_code_free (frame->tc);
197 memset (frame, 0, sizeof (*frame));
202 IDeckLinkVideoInputFrame *frame;
203 IDeckLinkInput *input;
207 video_frame_free (void *data)
209 VideoFrame *frame = (VideoFrame *) data;
211 frame->frame->Release ();
212 frame->input->Release ();
216 static void gst_decklink_video_src_set_property (GObject * object,
217 guint property_id, const GValue * value, GParamSpec * pspec);
218 static void gst_decklink_video_src_get_property (GObject * object,
219 guint property_id, GValue * value, GParamSpec * pspec);
220 static void gst_decklink_video_src_finalize (GObject * object);
222 static GstStateChangeReturn
223 gst_decklink_video_src_change_state (GstElement * element,
224 GstStateChange transition);
226 static gboolean gst_decklink_video_src_query (GstBaseSrc * bsrc,
228 static gboolean gst_decklink_video_src_unlock (GstBaseSrc * bsrc);
229 static gboolean gst_decklink_video_src_unlock_stop (GstBaseSrc * bsrc);
231 static GstFlowReturn gst_decklink_video_src_create (GstPushSrc * psrc,
232 GstBuffer ** buffer);
234 static gboolean gst_decklink_video_src_open (GstDecklinkVideoSrc * self);
235 static gboolean gst_decklink_video_src_close (GstDecklinkVideoSrc * self);
237 static gboolean gst_decklink_video_src_stop (GstDecklinkVideoSrc * self);
239 static void gst_decklink_video_src_start_streams (GstElement * element);
241 #define parent_class gst_decklink_video_src_parent_class
242 G_DEFINE_TYPE (GstDecklinkVideoSrc, gst_decklink_video_src, GST_TYPE_PUSH_SRC);
245 gst_decklink_video_src_class_init (GstDecklinkVideoSrcClass * klass)
247 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
248 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
249 GstBaseSrcClass *basesrc_class = GST_BASE_SRC_CLASS (klass);
250 GstPushSrcClass *pushsrc_class = GST_PUSH_SRC_CLASS (klass);
253 gobject_class->set_property = gst_decklink_video_src_set_property;
254 gobject_class->get_property = gst_decklink_video_src_get_property;
255 gobject_class->finalize = gst_decklink_video_src_finalize;
257 element_class->change_state =
258 GST_DEBUG_FUNCPTR (gst_decklink_video_src_change_state);
260 basesrc_class->query = GST_DEBUG_FUNCPTR (gst_decklink_video_src_query);
261 basesrc_class->negotiate = NULL;
262 basesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_decklink_video_src_unlock);
263 basesrc_class->unlock_stop =
264 GST_DEBUG_FUNCPTR (gst_decklink_video_src_unlock_stop);
266 pushsrc_class->create = GST_DEBUG_FUNCPTR (gst_decklink_video_src_create);
268 g_object_class_install_property (gobject_class, PROP_MODE,
269 g_param_spec_enum ("mode", "Playback Mode",
270 "Video Mode to use for playback",
271 GST_TYPE_DECKLINK_MODE, DEFAULT_MODE,
272 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
273 G_PARAM_CONSTRUCT)));
275 g_object_class_install_property (gobject_class, PROP_CONNECTION,
276 g_param_spec_enum ("connection", "Connection",
277 "Video input connection to use",
278 GST_TYPE_DECKLINK_CONNECTION, DEFAULT_CONNECTION,
279 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
280 G_PARAM_CONSTRUCT)));
282 g_object_class_install_property (gobject_class, PROP_DEVICE_NUMBER,
283 g_param_spec_int ("device-number", "Device number",
284 "Output device instance to use", 0, G_MAXINT, 0,
285 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
286 G_PARAM_CONSTRUCT)));
288 g_object_class_install_property (gobject_class, PROP_BUFFER_SIZE,
289 g_param_spec_uint ("buffer-size", "Buffer Size",
290 "Size of internal buffer in number of video frames", 1,
291 G_MAXINT, DEFAULT_BUFFER_SIZE,
292 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
294 g_object_class_install_property (gobject_class, PROP_VIDEO_FORMAT,
295 g_param_spec_enum ("video-format", "Video format",
296 "Video format type to use for input (Only use auto for mode=auto)",
297 GST_TYPE_DECKLINK_VIDEO_FORMAT, GST_DECKLINK_VIDEO_FORMAT_AUTO,
298 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
299 G_PARAM_CONSTRUCT)));
301 g_object_class_install_property (gobject_class, PROP_DUPLEX_MODE,
302 g_param_spec_enum ("duplex-mode", "Duplex mode",
303 "Certain DeckLink devices such as the DeckLink Quad 2 and the "
304 "DeckLink Duo 2 support configuration of the duplex mode of "
305 "individual sub-devices."
306 "A sub-device configured as full-duplex will use two connectors, "
307 "which allows simultaneous capture and playback, internal keying, "
308 "and fill & key scenarios."
309 "A half-duplex sub-device will use a single connector as an "
310 "individual capture or playback channel.",
311 GST_TYPE_DECKLINK_DUPLEX_MODE, GST_DECKLINK_DUPLEX_MODE_HALF,
312 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
313 G_PARAM_CONSTRUCT)));
315 g_object_class_install_property (gobject_class, PROP_TIMECODE_FORMAT,
316 g_param_spec_enum ("timecode-format", "Timecode format",
317 "Timecode format type to use for input",
318 GST_TYPE_DECKLINK_TIMECODE_FORMAT,
319 GST_DECKLINK_TIMECODE_FORMAT_RP188ANY,
320 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
321 G_PARAM_CONSTRUCT)));
323 g_object_class_install_property (gobject_class, PROP_OUTPUT_STREAM_TIME,
324 g_param_spec_boolean ("output-stream-time", "Output Stream Time",
325 "Output stream time directly instead of translating to pipeline clock",
326 DEFAULT_OUTPUT_STREAM_TIME,
327 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
329 g_object_class_install_property (gobject_class, PROP_SKIP_FIRST_TIME,
330 g_param_spec_uint64 ("skip-first-time", "Skip First Time",
331 "Skip that much time of initial frames after starting", 0,
332 G_MAXUINT64, DEFAULT_SKIP_FIRST_TIME,
333 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
335 g_object_class_install_property (gobject_class, PROP_DROP_NO_SIGNAL_FRAMES,
336 g_param_spec_boolean ("drop-no-signal-frames", "Drop No Signal Frames",
337 "Drop frames that are marked as having no input signal",
338 DEFAULT_DROP_NO_SIGNAL_FRAMES,
339 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
341 g_object_class_install_property (gobject_class, PROP_SIGNAL,
342 g_param_spec_boolean ("signal", "Input signal available",
343 "True if there is a valid input signal available",
344 FALSE, (GParamFlags) (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
346 g_object_class_install_property (gobject_class, PROP_HW_SERIAL_NUMBER,
347 g_param_spec_string ("hw-serial-number", "Hardware serial number",
348 "The serial number (hardware ID) of the Decklink card",
349 NULL, (GParamFlags) (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
351 g_object_class_install_property (gobject_class, PROP_OUTPUT_CC,
352 g_param_spec_boolean ("output-cc", "Output Closed Caption",
353 "Extract and output CC as GstMeta (if present)",
355 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
357 g_object_class_install_property (gobject_class, PROP_OUTPUT_AFD_BAR,
358 g_param_spec_boolean ("output-afd-bar", "Output AFD/Bar data",
359 "Extract and output AFD/Bar as GstMeta (if present)",
360 DEFAULT_OUTPUT_AFD_BAR,
361 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
363 templ_caps = gst_decklink_mode_get_template_caps (TRUE);
364 gst_element_class_add_pad_template (element_class,
365 gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, templ_caps));
366 gst_caps_unref (templ_caps);
368 gst_element_class_set_static_metadata (element_class, "Decklink Video Source",
369 "Video/Source/Hardware", "Decklink Source",
370 "David Schleef <ds@entropywave.com>, "
371 "Sebastian Dröge <sebastian@centricular.com>");
373 GST_DEBUG_CATEGORY_INIT (gst_decklink_video_src_debug, "decklinkvideosrc",
374 0, "debug category for decklinkvideosrc element");
378 gst_decklink_video_src_init (GstDecklinkVideoSrc * self)
380 self->mode = DEFAULT_MODE;
381 self->caps_mode = GST_DECKLINK_MODE_AUTO;
382 self->caps_format = bmdFormat8BitYUV;
383 self->connection = DEFAULT_CONNECTION;
384 self->device_number = 0;
385 self->buffer_size = DEFAULT_BUFFER_SIZE;
386 self->video_format = GST_DECKLINK_VIDEO_FORMAT_AUTO;
387 self->duplex_mode = bmdDuplexModeHalf;
388 self->timecode_format = bmdTimecodeRP188Any;
389 self->signal_state = SIGNAL_STATE_UNKNOWN;
390 self->output_stream_time = DEFAULT_OUTPUT_STREAM_TIME;
391 self->skip_first_time = DEFAULT_SKIP_FIRST_TIME;
392 self->drop_no_signal_frames = DEFAULT_DROP_NO_SIGNAL_FRAMES;
393 self->output_cc = DEFAULT_OUTPUT_CC;
394 self->output_afd_bar = DEFAULT_OUTPUT_AFD_BAR;
396 self->window_size = 64;
397 self->times = g_new (GstClockTime, 4 * self->window_size);
398 self->times_temp = self->times + 2 * self->window_size;
399 self->window_fill = 0;
400 self->window_skip = 1;
401 self->window_skip_count = 0;
403 gst_base_src_set_live (GST_BASE_SRC (self), TRUE);
404 gst_base_src_set_format (GST_BASE_SRC (self), GST_FORMAT_TIME);
406 gst_pad_use_fixed_caps (GST_BASE_SRC_PAD (self));
408 g_mutex_init (&self->lock);
409 g_cond_init (&self->cond);
411 self->current_frames =
412 gst_queue_array_new_for_struct (sizeof (CaptureFrame),
413 DEFAULT_BUFFER_SIZE);
417 gst_decklink_video_src_set_property (GObject * object, guint property_id,
418 const GValue * value, GParamSpec * pspec)
420 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (object);
422 switch (property_id) {
424 self->mode = (GstDecklinkModeEnum) g_value_get_enum (value);
425 /* setting the default value for caps_mode here: if mode==auto then we
426 * configure caps_mode from the caps, if mode!=auto we set caps_mode to
427 * the same value as the mode. so self->caps_mode is essentially
428 * self->mode with mode=auto filtered into whatever we got from the
430 if (self->mode != GST_DECKLINK_MODE_AUTO)
431 self->caps_mode = self->mode;
433 case PROP_CONNECTION:
434 self->connection = (GstDecklinkConnectionEnum) g_value_get_enum (value);
436 case PROP_DEVICE_NUMBER:
437 self->device_number = g_value_get_int (value);
439 case PROP_BUFFER_SIZE:
440 self->buffer_size = g_value_get_uint (value);
442 case PROP_VIDEO_FORMAT:
443 self->video_format = (GstDecklinkVideoFormat) g_value_get_enum (value);
444 switch (self->video_format) {
445 case GST_DECKLINK_VIDEO_FORMAT_8BIT_YUV:
446 case GST_DECKLINK_VIDEO_FORMAT_10BIT_YUV:
447 case GST_DECKLINK_VIDEO_FORMAT_8BIT_ARGB:
448 case GST_DECKLINK_VIDEO_FORMAT_8BIT_BGRA:
450 gst_decklink_pixel_format_from_type (self->video_format);
451 case GST_DECKLINK_VIDEO_FORMAT_AUTO:
454 GST_ELEMENT_WARNING (GST_ELEMENT (self), CORE, NOT_IMPLEMENTED,
455 ("Format %d not supported", self->video_format), (NULL));
459 case PROP_DUPLEX_MODE:
461 gst_decklink_duplex_mode_from_enum ((GstDecklinkDuplexMode)
462 g_value_get_enum (value));
464 case PROP_TIMECODE_FORMAT:
465 self->timecode_format =
466 gst_decklink_timecode_format_from_enum ((GstDecklinkTimecodeFormat)
467 g_value_get_enum (value));
469 case PROP_OUTPUT_STREAM_TIME:
470 self->output_stream_time = g_value_get_boolean (value);
472 case PROP_SKIP_FIRST_TIME:
473 self->skip_first_time = g_value_get_uint64 (value);
475 case PROP_DROP_NO_SIGNAL_FRAMES:
476 self->drop_no_signal_frames = g_value_get_boolean (value);
479 self->output_cc = g_value_get_boolean (value);
481 case PROP_OUTPUT_AFD_BAR:
482 self->output_afd_bar = g_value_get_boolean (value);
485 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
491 gst_decklink_video_src_get_property (GObject * object, guint property_id,
492 GValue * value, GParamSpec * pspec)
494 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (object);
496 switch (property_id) {
498 g_value_set_enum (value, self->mode);
500 case PROP_CONNECTION:
501 g_value_set_enum (value, self->connection);
503 case PROP_DEVICE_NUMBER:
504 g_value_set_int (value, self->device_number);
506 case PROP_BUFFER_SIZE:
507 g_value_set_uint (value, self->buffer_size);
509 case PROP_VIDEO_FORMAT:
510 g_value_set_enum (value, self->video_format);
512 case PROP_DUPLEX_MODE:
513 g_value_set_enum (value,
514 gst_decklink_duplex_mode_to_enum (self->duplex_mode));
516 case PROP_TIMECODE_FORMAT:
517 g_value_set_enum (value,
518 gst_decklink_timecode_format_to_enum (self->timecode_format));
520 case PROP_OUTPUT_STREAM_TIME:
521 g_value_set_boolean (value, self->output_stream_time);
523 case PROP_SKIP_FIRST_TIME:
524 g_value_set_uint64 (value, self->skip_first_time);
526 case PROP_DROP_NO_SIGNAL_FRAMES:
527 g_value_set_boolean (value, self->drop_no_signal_frames);
530 g_value_set_boolean (value, self->signal_state == SIGNAL_STATE_AVAILABLE);
532 case PROP_HW_SERIAL_NUMBER:
534 g_value_set_string (value, self->input->hw_serial_number);
536 g_value_set_string (value, NULL);
539 g_value_set_boolean (value, self->output_cc);
541 case PROP_OUTPUT_AFD_BAR:
542 g_value_set_boolean (value, self->output_afd_bar);
545 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
551 gst_decklink_video_src_finalize (GObject * object)
553 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (object);
555 g_free (self->times);
557 g_mutex_clear (&self->lock);
558 g_cond_clear (&self->cond);
560 if (self->current_frames) {
561 while (gst_queue_array_get_length (self->current_frames) > 0) {
562 CaptureFrame *tmp = (CaptureFrame *)
563 gst_queue_array_pop_head_struct (self->current_frames);
564 capture_frame_clear (tmp);
566 gst_queue_array_free (self->current_frames);
567 self->current_frames = NULL;
570 G_OBJECT_CLASS (parent_class)->finalize (object);
574 gst_decklink_video_src_start (GstDecklinkVideoSrc * self)
576 const GstDecklinkMode *mode;
577 BMDVideoInputFlags flags;
579 BMDPixelFormat format;
581 g_mutex_lock (&self->input->lock);
582 if (self->input->video_enabled) {
583 g_mutex_unlock (&self->input->lock);
586 g_mutex_unlock (&self->input->lock);
588 if (self->input->config && self->connection != GST_DECKLINK_CONNECTION_AUTO) {
589 ret = self->input->config->SetInt (bmdDeckLinkConfigVideoInputConnection,
590 gst_decklink_get_connection (self->connection));
592 GST_ERROR_OBJECT (self,
593 "Failed to set configuration (input source): 0x%08lx",
594 (unsigned long) ret);
598 if (self->connection == GST_DECKLINK_CONNECTION_COMPOSITE) {
599 ret = self->input->config->SetInt (bmdDeckLinkConfigAnalogVideoInputFlags,
600 bmdAnalogVideoFlagCompositeSetup75);
602 GST_ERROR_OBJECT (self,
603 "Failed to set configuration (composite setup): 0x%08lx",
604 (unsigned long) ret);
610 flags = bmdVideoInputFlagDefault;
611 if (self->mode == GST_DECKLINK_MODE_AUTO) {
612 bool autoDetection = false;
614 if (self->input->attributes) {
617 attributes->GetFlag (BMDDeckLinkSupportsInputFormatDetection,
620 GST_ERROR_OBJECT (self,
621 "Failed to get attribute (autodetection): 0x%08lx",
622 (unsigned long) ret);
626 flags |= bmdVideoInputEnableFormatDetection;
628 if (!autoDetection) {
629 GST_ERROR_OBJECT (self, "Failed to activate auto-detection");
634 mode = gst_decklink_get_mode (self->mode);
635 g_assert (mode != NULL);
637 format = self->caps_format;
638 ret = self->input->input->EnableVideoInput (mode->mode, format, flags);
640 GST_WARNING_OBJECT (self, "Failed to enable video input: 0x%08lx",
641 (unsigned long) ret);
645 g_mutex_lock (&self->input->lock);
646 self->input->mode = mode;
647 self->input->video_enabled = TRUE;
648 if (self->input->start_streams)
649 self->input->start_streams (self->input->videosrc);
650 g_mutex_unlock (&self->input->lock);
656 gst_decklink_video_src_update_time_mapping (GstDecklinkVideoSrc * self,
657 GstClockTime capture_time, GstClockTime stream_time)
659 if (self->window_skip_count == 0) {
660 GstClockTime num, den, b, xbase;
663 self->times[2 * self->window_fill] = stream_time;
664 self->times[2 * self->window_fill + 1] = capture_time;
667 self->window_skip_count++;
668 if (self->window_skip_count >= self->window_skip)
669 self->window_skip_count = 0;
671 if (self->window_fill >= self->window_size) {
673 ((gdouble) self->info.fps_n + self->info.fps_d -
674 1) / ((gdouble) self->info.fps_d);
676 /* Start by updating first every frame, once full every second frame,
677 * etc. until we update once every 4 seconds */
678 if (self->window_skip < 4 * fps)
679 self->window_skip *= 2;
680 if (self->window_skip >= 4 * fps)
681 self->window_skip = 4 * fps;
683 self->window_fill = 0;
684 self->window_filled = TRUE;
687 /* First sample ever, create some basic mapping to start */
688 if (!self->window_filled && self->window_fill == 1) {
689 self->current_time_mapping.xbase = stream_time;
690 self->current_time_mapping.b = capture_time;
691 self->current_time_mapping.num = 1;
692 self->current_time_mapping.den = 1;
693 self->next_time_mapping_pending = FALSE;
696 /* Only bother calculating anything here once we had enough measurements,
697 * i.e. let's take the window size as a start */
698 if (self->window_filled &&
699 gst_calculate_linear_regression (self->times, self->times_temp,
700 self->window_size, &num, &den, &b, &xbase, &r_squared)) {
702 GST_DEBUG_OBJECT (self,
703 "Calculated new time mapping: pipeline time = %lf * (stream time - %"
704 G_GUINT64_FORMAT ") + %" G_GUINT64_FORMAT " (%lf)",
705 ((gdouble) num) / ((gdouble) den), xbase, b, r_squared);
707 self->next_time_mapping.xbase = xbase;
708 self->next_time_mapping.b = b;
709 self->next_time_mapping.num = num;
710 self->next_time_mapping.den = den;
711 self->next_time_mapping_pending = TRUE;
714 self->window_skip_count++;
715 if (self->window_skip_count >= self->window_skip)
716 self->window_skip_count = 0;
719 if (self->next_time_mapping_pending) {
720 GstClockTime expected, new_calculated, diff, max_diff;
723 gst_clock_adjust_with_calibration (NULL, stream_time,
724 self->current_time_mapping.xbase, self->current_time_mapping.b,
725 self->current_time_mapping.num, self->current_time_mapping.den);
727 gst_clock_adjust_with_calibration (NULL, stream_time,
728 self->next_time_mapping.xbase, self->next_time_mapping.b,
729 self->next_time_mapping.num, self->next_time_mapping.den);
731 if (new_calculated > expected)
732 diff = new_calculated - expected;
734 diff = expected - new_calculated;
736 /* At most 5% frame duration change per update */
738 gst_util_uint64_scale (GST_SECOND / 20, self->info.fps_d,
741 GST_DEBUG_OBJECT (self,
742 "New time mapping causes difference of %" GST_TIME_FORMAT,
743 GST_TIME_ARGS (diff));
744 GST_DEBUG_OBJECT (self, "Maximum allowed per frame %" GST_TIME_FORMAT,
745 GST_TIME_ARGS (max_diff));
747 if (diff > max_diff) {
748 /* adjust so that we move that much closer */
749 if (new_calculated > expected) {
750 self->current_time_mapping.b = expected + max_diff;
751 self->current_time_mapping.xbase = stream_time;
753 self->current_time_mapping.b = expected - max_diff;
754 self->current_time_mapping.xbase = stream_time;
757 self->current_time_mapping.xbase = self->next_time_mapping.xbase;
758 self->current_time_mapping.b = self->next_time_mapping.b;
759 self->current_time_mapping.num = self->next_time_mapping.num;
760 self->current_time_mapping.den = self->next_time_mapping.den;
761 self->next_time_mapping_pending = FALSE;
767 gst_decklink_video_src_got_frame (GstElement * element,
768 IDeckLinkVideoInputFrame * frame, GstDecklinkModeEnum mode,
769 GstClockTime capture_time, GstClockTime stream_time,
770 GstClockTime stream_duration, GstClockTime hardware_time,
771 GstClockTime hardware_duration, IDeckLinkTimecode * dtc, gboolean no_signal)
773 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (element);
774 GstClockTime timestamp, duration;
776 GST_LOG_OBJECT (self,
777 "Got video frame at %" GST_TIME_FORMAT " / %" GST_TIME_FORMAT " (%"
778 GST_TIME_FORMAT "), no signal: %d", GST_TIME_ARGS (capture_time),
779 GST_TIME_ARGS (stream_time), GST_TIME_ARGS (stream_duration), no_signal);
781 g_mutex_lock (&self->lock);
782 if (self->first_time == GST_CLOCK_TIME_NONE)
783 self->first_time = stream_time;
785 if (self->skip_first_time > 0
786 && stream_time - self->first_time < self->skip_first_time) {
787 g_mutex_unlock (&self->lock);
788 GST_DEBUG_OBJECT (self,
789 "Skipping frame as requested: %" GST_TIME_FORMAT " < %" GST_TIME_FORMAT,
790 GST_TIME_ARGS (stream_time),
791 GST_TIME_ARGS (self->skip_first_time + self->first_time));
795 if (self->drop_no_signal_frames && no_signal) {
797 memset (&f, 0, sizeof (f));
799 /* Notify the streaming thread about the signal loss */
800 gst_queue_array_push_tail_struct (self->current_frames, &f);
801 g_cond_signal (&self->cond);
802 g_mutex_unlock (&self->lock);
807 gst_decklink_video_src_update_time_mapping (self, capture_time, stream_time);
808 if (self->output_stream_time) {
809 timestamp = stream_time;
810 duration = stream_duration;
813 gst_clock_adjust_with_calibration (NULL, stream_time,
814 self->current_time_mapping.xbase, self->current_time_mapping.b,
815 self->current_time_mapping.num, self->current_time_mapping.den);
817 gst_util_uint64_scale (stream_duration, self->current_time_mapping.num,
818 self->current_time_mapping.den);
821 GST_LOG_OBJECT (self,
822 "Converted times to %" GST_TIME_FORMAT " (%"
823 GST_TIME_FORMAT ")", GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration));
825 if (!self->flushing) {
827 const GstDecklinkMode *bmode;
828 GstVideoTimeCodeFlags flags = GST_VIDEO_TIME_CODE_FLAGS_NONE;
829 guint field_count = 0;
830 guint skipped_frames = 0;
831 GstClockTime from_timestamp = GST_CLOCK_TIME_NONE;
832 GstClockTime to_timestamp = GST_CLOCK_TIME_NONE;
834 while (gst_queue_array_get_length (self->current_frames) >=
836 CaptureFrame *tmp = (CaptureFrame *)
837 gst_queue_array_pop_head_struct (self->current_frames);
839 if (skipped_frames == 0)
840 from_timestamp = tmp->timestamp;
842 to_timestamp = tmp->timestamp;
844 capture_frame_clear (tmp);
847 if (skipped_frames > 0)
848 GST_WARNING_OBJECT (self,
849 "Dropped %u old frames from %" GST_TIME_FORMAT " to %"
850 GST_TIME_FORMAT, skipped_frames, GST_TIME_ARGS (from_timestamp),
851 GST_TIME_ARGS (to_timestamp));
853 memset (&f, 0, sizeof (f));
855 f.timestamp = timestamp;
856 f.duration = duration;
857 f.stream_timestamp = stream_time;
858 f.stream_duration = stream_duration;
859 f.hardware_timestamp = hardware_time;
860 f.hardware_duration = hardware_duration;
862 f.format = frame->GetPixelFormat ();
863 f.no_signal = no_signal;
865 uint8_t hours, minutes, seconds, frames;
868 res = dtc->GetComponents (&hours, &minutes, &seconds, &frames);
870 GST_ERROR ("Could not get components for timecode %p: 0x%08lx", dtc,
871 (unsigned long) res);
874 GST_DEBUG_OBJECT (self, "Got timecode %02d:%02d:%02d:%02d",
875 hours, minutes, seconds, frames);
876 bmode = gst_decklink_get_mode (mode);
877 if (bmode->interlaced)
879 (GstVideoTimeCodeFlags) (flags |
880 GST_VIDEO_TIME_CODE_FLAGS_INTERLACED);
881 if (bmode->fps_d == 1001) {
882 if (bmode->fps_n == 30000 || bmode->fps_n == 60000) {
883 /* Some occurrences have been spotted where the driver mistakenly
884 * fails to set the drop-frame flag for drop-frame timecodes.
885 * Assume always drop-frame for 29.97 and 59.94 FPS */
887 (GstVideoTimeCodeFlags) (flags |
888 GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME);
890 /* Drop-frame isn't defined for any other framerates (e.g. 23.976)
893 (GstVideoTimeCodeFlags) (flags &
894 ~GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME);
898 gst_video_time_code_new (bmode->fps_n, bmode->fps_d, NULL, flags,
899 hours, minutes, seconds, frames, field_count);
907 gst_queue_array_push_tail_struct (self->current_frames, &f);
908 g_cond_signal (&self->cond);
910 g_mutex_unlock (&self->lock);
914 extract_vbi_line (GstDecklinkVideoSrc * self, GstBuffer ** buffer,
915 IDeckLinkVideoFrameAncillary * vanc_frame, guint field2_offset, guint line,
916 gboolean * found_cc_out, gboolean * found_afd_bar_out)
918 GstVideoAncillary gstanc;
919 const guint8 *vancdata;
920 gboolean found_cc = FALSE, found_afd_bar = FALSE;
922 if (vanc_frame->GetBufferForVerticalBlankingLine (field2_offset + line,
923 (void **) &vancdata) != S_OK)
926 GST_DEBUG_OBJECT (self, "Checking for VBI data on field line %u (field %u)",
927 field2_offset + line, field2_offset ? 2 : 1);
928 gst_video_vbi_parser_add_line (self->vbiparser, vancdata);
930 /* Check if CC or AFD/Bar is on this line if we didn't find any on a
931 * previous line. Remember the line where we found them */
933 while (gst_video_vbi_parser_get_ancillary (self->vbiparser,
934 &gstanc) == GST_VIDEO_VBI_PARSER_RESULT_OK) {
935 switch (GST_VIDEO_ANCILLARY_DID16 (&gstanc)) {
936 case GST_VIDEO_ANCILLARY_DID16_S334_EIA_708:
937 if (*found_cc_out || !self->output_cc)
940 GST_DEBUG_OBJECT (self,
941 "Adding CEA-708 CDP meta to buffer for line %u",
942 field2_offset + line);
943 GST_MEMDUMP_OBJECT (self, "CDP", gstanc.data, gstanc.data_count);
944 gst_buffer_add_video_caption_meta (*buffer,
945 GST_VIDEO_CAPTION_TYPE_CEA708_CDP, gstanc.data, gstanc.data_count);
949 self->last_cc_vbi_line_field2 = line;
951 self->last_cc_vbi_line = line;
953 case GST_VIDEO_ANCILLARY_DID16_S334_EIA_608:
954 if (*found_cc_out || !self->output_cc)
957 GST_DEBUG_OBJECT (self,
958 "Adding CEA-608 meta to buffer for line %u", field2_offset + line);
959 GST_MEMDUMP_OBJECT (self, "CEA608", gstanc.data, gstanc.data_count);
960 gst_buffer_add_video_caption_meta (*buffer,
961 GST_VIDEO_CAPTION_TYPE_CEA608_S334_1A, gstanc.data,
966 self->last_cc_vbi_line_field2 = line;
968 self->last_cc_vbi_line = line;
970 case GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR:{
971 GstVideoAFDValue afd;
972 gboolean is_letterbox;
975 if (*found_afd_bar_out || !self->output_afd_bar)
978 GST_DEBUG_OBJECT (self,
979 "Adding AFD/Bar meta to buffer for line %u", field2_offset + line);
980 GST_MEMDUMP_OBJECT (self, "AFD/Bar", gstanc.data, gstanc.data_count);
982 if (gstanc.data_count < 16) {
983 GST_WARNING_OBJECT (self, "AFD/Bar data too small");
987 afd = (GstVideoAFDValue) ((gstanc.data[0] >> 3) & 0xf);
988 is_letterbox = ((gstanc.data[3] >> 4) & 0x3) == 0;
989 bar1 = GST_READ_UINT16_BE (&gstanc.data[4]);
990 bar2 = GST_READ_UINT16_BE (&gstanc.data[6]);
992 gst_buffer_add_video_afd_meta (*buffer, field2_offset ? 1 : 0,
993 GST_VIDEO_AFD_SPEC_SMPTE_ST2016_1, afd);
994 gst_buffer_add_video_bar_meta (*buffer, field2_offset ? 1 : 0,
995 is_letterbox, bar1, bar2);
997 found_afd_bar = TRUE;
999 self->last_afd_bar_vbi_line_field2 = line;
1001 self->last_afd_bar_vbi_line = line;
1005 /* otherwise continue looking */
1011 *found_cc_out = TRUE;
1013 *found_afd_bar_out = TRUE;
1017 extract_vbi (GstDecklinkVideoSrc * self, GstBuffer ** buffer, VideoFrame * vf)
1019 IDeckLinkVideoFrameAncillary *vanc_frame = NULL;
1021 GstVideoFormat videoformat;
1022 GstDecklinkModeEnum mode_enum;
1023 const GstDecklinkMode *mode;
1024 gboolean found_cc = FALSE, found_afd_bar = FALSE;
1026 if (vf->frame->GetAncillaryData (&vanc_frame) != S_OK)
1030 gst_decklink_video_format_from_type (vanc_frame->GetPixelFormat ());
1032 gst_decklink_get_mode_enum_from_bmd (vanc_frame->GetDisplayMode ());
1033 mode = gst_decklink_get_mode (mode_enum);
1035 if (videoformat == GST_VIDEO_FORMAT_UNKNOWN) {
1036 GST_DEBUG_OBJECT (self, "Unknown video format for Ancillary data");
1037 vanc_frame->Release ();
1041 if ((videoformat != self->anc_vformat || mode->width != self->anc_width)
1042 && self->vbiparser) {
1043 gst_video_vbi_parser_free (self->vbiparser);
1044 self->vbiparser = NULL;
1047 if (self->vbiparser == NULL) {
1048 self->vbiparser = gst_video_vbi_parser_new (videoformat, mode->width);
1049 self->anc_vformat = videoformat;
1050 self->anc_width = mode->width;
1053 GST_DEBUG_OBJECT (self, "Checking for ancillary data in VBI");
1055 /* First check last known lines, if any */
1056 if (self->last_cc_vbi_line > 0) {
1057 extract_vbi_line (self, buffer, vanc_frame, 0, self->last_cc_vbi_line,
1058 &found_cc, &found_afd_bar);
1060 if (self->last_afd_bar_vbi_line > 0
1061 && self->last_cc_vbi_line != self->last_afd_bar_vbi_line) {
1062 extract_vbi_line (self, buffer, vanc_frame, 0, self->last_afd_bar_vbi_line,
1063 &found_cc, &found_afd_bar);
1067 self->last_cc_vbi_line = -1;
1069 self->last_afd_bar_vbi_line = -1;
1071 if ((self->output_cc && !found_cc) || (self->output_afd_bar
1072 && !found_afd_bar)) {
1073 /* Otherwise loop through the first 21 lines and hope to find the data */
1074 /* FIXME: For the different formats the number of lines that can contain
1075 * VANC are different */
1076 for (line = 1; line < 22; line++) {
1077 extract_vbi_line (self, buffer, vanc_frame, 0, line, &found_cc,
1080 /* If we found everything we wanted to extract, stop here */
1081 if ((!self->output_cc || found_cc) &&
1082 (!self->output_afd_bar || found_afd_bar))
1087 /* Do the same for field 2 in case of interlaced content */
1088 if (GST_VIDEO_INFO_IS_INTERLACED (&self->info)) {
1089 gboolean found_cc_field2 = FALSE, found_afd_bar_field2 = FALSE;
1090 guint field2_offset = 0;
1092 /* The VANC lines for the second field are at an offset, depending on
1095 switch (self->info.height) {
1097 /* NTSC: 525 / 2 + 1 */
1098 field2_offset = 263;
1101 /* PAL: 625 / 2 + 1 */
1102 field2_offset = 313;
1105 /* 1080i: 1125 / 2 + 1 */
1106 field2_offset = 563;
1109 g_assert_not_reached ();
1112 /* First try the same lines as for field 1 if we don't know yet */
1113 if (self->last_cc_vbi_line_field2 <= 0)
1114 self->last_cc_vbi_line_field2 = self->last_cc_vbi_line;
1115 if (self->last_afd_bar_vbi_line_field2 <= 0)
1116 self->last_afd_bar_vbi_line_field2 = self->last_afd_bar_vbi_line;
1118 if (self->last_cc_vbi_line_field2 > 0) {
1119 extract_vbi_line (self, buffer, vanc_frame, field2_offset,
1120 self->last_cc_vbi_line_field2, &found_cc_field2,
1121 &found_afd_bar_field2);
1123 if (self->last_afd_bar_vbi_line_field2 > 0
1124 && self->last_cc_vbi_line_field2 !=
1125 self->last_afd_bar_vbi_line_field2) {
1126 extract_vbi_line (self, buffer, vanc_frame, field2_offset,
1127 self->last_afd_bar_vbi_line_field2, &found_cc_field2,
1128 &found_afd_bar_field2);
1131 if (!found_cc_field2)
1132 self->last_cc_vbi_line_field2 = -1;
1133 if (!found_afd_bar_field2)
1134 self->last_afd_bar_vbi_line_field2 = -1;
1136 if (((self->output_cc && !found_cc_field2) || (self->output_afd_bar
1137 && !found_afd_bar_field2))) {
1138 for (line = 1; line < 22; line++) {
1139 extract_vbi_line (self, buffer, vanc_frame, field2_offset, line,
1140 &found_cc_field2, &found_afd_bar_field2);
1142 /* If we found everything we wanted to extract, stop here */
1143 if ((!self->output_cc || found_cc_field2) &&
1144 (!self->output_afd_bar || found_afd_bar_field2))
1150 vanc_frame->Release ();
1153 static GstFlowReturn
1154 gst_decklink_video_src_create (GstPushSrc * bsrc, GstBuffer ** buffer)
1156 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
1157 GstFlowReturn flow_ret = GST_FLOW_OK;
1163 gboolean caps_changed = FALSE;
1164 const GstDecklinkMode *mode;
1165 static GstStaticCaps stream_reference =
1166 GST_STATIC_CAPS ("timestamp/x-decklink-stream");
1167 static GstStaticCaps hardware_reference =
1168 GST_STATIC_CAPS ("timestamp/x-decklink-hardware");
1170 if (!gst_decklink_video_src_start (self)) {
1171 return GST_FLOW_NOT_NEGOTIATED;
1174 g_mutex_lock (&self->lock);
1176 while (gst_queue_array_is_empty (self->current_frames) && !self->flushing) {
1177 g_cond_wait (&self->cond, &self->lock);
1180 if (self->flushing) {
1181 GST_DEBUG_OBJECT (self, "Flushing");
1182 g_mutex_unlock (&self->lock);
1183 return GST_FLOW_FLUSHING;
1186 f = *(CaptureFrame *) gst_queue_array_pop_head_struct (self->current_frames);
1188 // We will have no frame if frames without signal are dropped immediately
1189 // but we still have to signal that it's lost here.
1190 if (f.no_signal || !f.frame) {
1191 if (self->signal_state != SIGNAL_STATE_LOST) {
1192 self->signal_state = SIGNAL_STATE_LOST;
1193 g_object_notify (G_OBJECT (self), "signal");
1194 GST_ELEMENT_WARNING (GST_ELEMENT (self), RESOURCE, READ, ("Signal lost"),
1195 ("No input source was detected - video frames invalid"));
1197 // If we have no frame here, simply retry until we got one
1199 capture_frame_clear (&f);
1203 GstDecklinkSignalState previous_signal_state = self->signal_state;
1205 if (previous_signal_state != SIGNAL_STATE_AVAILABLE) {
1206 self->signal_state = SIGNAL_STATE_AVAILABLE;
1207 g_object_notify (G_OBJECT (self), "signal");
1210 if (previous_signal_state == SIGNAL_STATE_LOST) {
1211 GST_ELEMENT_INFO (GST_ELEMENT (self), RESOURCE, READ,
1212 ("Signal recovered"), ("Input source detected"));
1216 // If we're not flushing, we should have a valid frame from the queue
1217 g_assert (f.frame != NULL);
1219 if (!gst_pad_has_current_caps (GST_BASE_SRC_PAD (self))) {
1220 caps_changed = TRUE;
1223 if (self->caps_mode != f.mode) {
1224 if (self->mode == GST_DECKLINK_MODE_AUTO
1225 || !gst_pad_has_current_caps (GST_BASE_SRC_PAD (self))) {
1226 GST_DEBUG_OBJECT (self, "Mode changed from %d to %d", self->caps_mode,
1228 caps_changed = TRUE;
1229 self->caps_mode = f.mode;
1231 g_mutex_unlock (&self->lock);
1232 GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
1233 ("Invalid mode in captured frame"),
1234 ("Mode set to %d but captured %d", self->caps_mode, f.mode));
1235 capture_frame_clear (&f);
1236 return GST_FLOW_NOT_NEGOTIATED;
1239 if (self->caps_format != f.format) {
1240 if (self->video_format == GST_DECKLINK_VIDEO_FORMAT_AUTO
1241 || !gst_pad_has_current_caps (GST_BASE_SRC_PAD (self))) {
1242 GST_DEBUG_OBJECT (self, "Format changed from %d to %d", self->caps_format,
1244 caps_changed = TRUE;
1245 self->caps_format = f.format;
1247 g_mutex_unlock (&self->lock);
1248 GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
1249 ("Invalid pixel format in captured frame"),
1250 ("Format set to %d but captured %d", self->caps_format, f.format));
1251 capture_frame_clear (&f);
1252 return GST_FLOW_NOT_NEGOTIATED;
1256 /* 1 ns error can be just a rounding error, so that's OK. The Decklink
1257 * drivers give us a really steady stream time, so anything above 1 ns can't
1258 * be a rounding error and is therefore something to worry about */
1259 if (self->expected_stream_time != GST_CLOCK_TIME_NONE &&
1260 ABSDIFF (self->expected_stream_time, f.stream_timestamp) > 1) {
1262 GstClockTime running_time;
1264 self->dropped += f.stream_timestamp - self->expected_stream_time;
1265 running_time = gst_segment_to_running_time (&GST_BASE_SRC (self)->segment,
1266 GST_FORMAT_TIME, f.timestamp);
1269 gst_message_new_qos (GST_OBJECT (self), TRUE, running_time,
1270 f.stream_timestamp, f.timestamp, f.duration);
1271 gst_message_set_qos_stats (msg, GST_FORMAT_TIME, self->processed,
1273 gst_element_post_message (GST_ELEMENT (self), msg);
1275 if (self->first_stream_time == GST_CLOCK_TIME_NONE)
1276 self->first_stream_time = f.stream_timestamp;
1278 f.stream_timestamp - self->dropped - self->first_stream_time;
1279 self->expected_stream_time = f.stream_timestamp + f.stream_duration;
1281 g_mutex_unlock (&self->lock);
1283 self->last_cc_vbi_line = -1;
1284 self->last_afd_bar_vbi_line = -1;
1285 self->last_cc_vbi_line_field2 = -1;
1286 self->last_afd_bar_vbi_line_field2 = -1;
1287 caps = gst_decklink_mode_get_caps (f.mode, f.format, TRUE);
1288 gst_video_info_from_caps (&self->info, caps);
1289 gst_base_src_set_caps (GST_BASE_SRC_CAST (bsrc), caps);
1290 gst_element_post_message (GST_ELEMENT_CAST (self),
1291 gst_message_new_latency (GST_OBJECT_CAST (self)));
1292 gst_caps_unref (caps);
1293 if (self->vbiparser) {
1294 gst_video_vbi_parser_free (self->vbiparser);
1295 self->vbiparser = NULL;
1296 self->anc_vformat = GST_VIDEO_FORMAT_UNKNOWN;
1297 self->anc_width = 0;
1301 f.frame->GetBytes ((gpointer *) & data);
1302 data_size = self->info.size;
1304 vf = (VideoFrame *) g_malloc0 (sizeof (VideoFrame));
1307 gst_buffer_new_wrapped_full ((GstMemoryFlags) GST_MEMORY_FLAG_READONLY,
1308 (gpointer) data, data_size, 0, data_size, vf,
1309 (GDestroyNotify) video_frame_free);
1311 vf->frame = f.frame;
1313 vf->input = self->input->input;
1314 vf->input->AddRef ();
1316 // If we have a format that supports VANC and we are asked to extract CC,
1318 if ((self->output_cc || self->output_afd_bar)
1319 && self->signal_state != SIGNAL_STATE_LOST)
1320 extract_vbi (self, buffer, vf);
1323 GST_BUFFER_FLAG_SET (*buffer, GST_BUFFER_FLAG_GAP);
1324 GST_BUFFER_TIMESTAMP (*buffer) = f.timestamp;
1325 GST_BUFFER_DURATION (*buffer) = f.duration;
1327 gst_buffer_add_video_time_code_meta (*buffer, f.tc);
1328 gst_buffer_add_reference_timestamp_meta (*buffer,
1329 gst_static_caps_get (&stream_reference), f.stream_timestamp,
1331 gst_buffer_add_reference_timestamp_meta (*buffer,
1332 gst_static_caps_get (&hardware_reference), f.hardware_timestamp,
1333 f.hardware_duration);
1335 mode = gst_decklink_get_mode (self->caps_mode);
1336 if (mode->interlaced && mode->tff)
1337 GST_BUFFER_FLAG_SET (*buffer,
1338 GST_VIDEO_BUFFER_FLAG_TFF | GST_VIDEO_BUFFER_FLAG_INTERLACED);
1339 else if (mode->interlaced)
1340 GST_BUFFER_FLAG_SET (*buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
1342 GST_DEBUG_OBJECT (self,
1343 "Outputting buffer %p with timestamp %" GST_TIME_FORMAT " and duration %"
1344 GST_TIME_FORMAT, *buffer, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*buffer)),
1345 GST_TIME_ARGS (GST_BUFFER_DURATION (*buffer)));
1347 capture_frame_clear (&f);
1353 gst_decklink_video_src_query (GstBaseSrc * bsrc, GstQuery * query)
1355 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
1356 gboolean ret = TRUE;
1358 switch (GST_QUERY_TYPE (query)) {
1359 case GST_QUERY_LATENCY:{
1361 GstClockTime min, max;
1362 const GstDecklinkMode *mode;
1364 g_mutex_lock (&self->lock);
1365 mode = gst_decklink_get_mode (self->caps_mode);
1366 g_mutex_unlock (&self->lock);
1368 min = gst_util_uint64_scale_ceil (GST_SECOND, mode->fps_d, mode->fps_n);
1369 max = self->buffer_size * min;
1371 gst_query_set_latency (query, TRUE, min, max);
1380 ret = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
1388 gst_decklink_video_src_unlock (GstBaseSrc * bsrc)
1390 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
1392 g_mutex_lock (&self->lock);
1393 self->flushing = TRUE;
1394 g_cond_signal (&self->cond);
1395 g_mutex_unlock (&self->lock);
1401 gst_decklink_video_src_unlock_stop (GstBaseSrc * bsrc)
1403 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
1405 g_mutex_lock (&self->lock);
1406 self->flushing = FALSE;
1407 while (gst_queue_array_get_length (self->current_frames) > 0) {
1409 (CaptureFrame *) gst_queue_array_pop_head_struct (self->current_frames);
1410 capture_frame_clear (tmp);
1412 g_mutex_unlock (&self->lock);
1418 gst_decklink_video_src_open (GstDecklinkVideoSrc * self)
1420 const GstDecklinkMode *mode;
1422 GST_DEBUG_OBJECT (self, "Opening");
1425 gst_decklink_acquire_nth_input (self->device_number,
1426 GST_ELEMENT_CAST (self), FALSE);
1428 GST_ERROR_OBJECT (self, "Failed to acquire input");
1432 g_object_notify (G_OBJECT (self), "hw-serial-number");
1434 mode = gst_decklink_get_mode (self->mode);
1435 g_assert (mode != NULL);
1436 g_mutex_lock (&self->input->lock);
1437 self->input->mode = mode;
1438 self->input->format = self->caps_format;
1439 self->input->got_video_frame = gst_decklink_video_src_got_frame;
1440 self->input->start_streams = gst_decklink_video_src_start_streams;
1441 g_mutex_unlock (&self->input->lock);
1447 gst_decklink_video_src_close (GstDecklinkVideoSrc * self)
1450 GST_DEBUG_OBJECT (self, "Closing");
1453 g_mutex_lock (&self->input->lock);
1454 self->input->got_video_frame = NULL;
1455 self->input->mode = NULL;
1456 self->input->video_enabled = FALSE;
1457 self->input->start_streams = NULL;
1458 g_mutex_unlock (&self->input->lock);
1460 gst_decklink_release_nth_input (self->device_number,
1461 GST_ELEMENT_CAST (self), FALSE);
1469 gst_decklink_video_src_stop (GstDecklinkVideoSrc * self)
1471 GST_DEBUG_OBJECT (self, "Stopping");
1473 while (gst_queue_array_get_length (self->current_frames) > 0) {
1475 (CaptureFrame *) gst_queue_array_pop_head_struct (self->current_frames);
1476 capture_frame_clear (tmp);
1478 self->caps_mode = GST_DECKLINK_MODE_AUTO;
1480 if (self->input && self->input->video_enabled) {
1481 g_mutex_lock (&self->input->lock);
1482 self->input->video_enabled = FALSE;
1483 g_mutex_unlock (&self->input->lock);
1485 self->input->input->DisableVideoInput ();
1488 if (self->vbiparser) {
1489 gst_video_vbi_parser_free (self->vbiparser);
1490 self->vbiparser = NULL;
1491 self->anc_vformat = GST_VIDEO_FORMAT_UNKNOWN;
1492 self->anc_width = 0;
1499 gst_decklink_video_src_start_streams (GstElement * element)
1501 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (element);
1504 if (self->input->video_enabled && (!self->input->audiosrc
1505 || self->input->audio_enabled)
1506 && (GST_STATE (self) == GST_STATE_PLAYING
1507 || GST_STATE_PENDING (self) == GST_STATE_PLAYING)) {
1508 GST_DEBUG_OBJECT (self, "Starting streams");
1510 g_mutex_lock (&self->lock);
1511 self->first_time = GST_CLOCK_TIME_NONE;
1512 self->window_fill = 0;
1513 self->window_filled = FALSE;
1514 self->window_skip = 1;
1515 self->window_skip_count = 0;
1516 self->current_time_mapping.xbase = 0;
1517 self->current_time_mapping.b = 0;
1518 self->current_time_mapping.num = 1;
1519 self->current_time_mapping.den = 1;
1520 self->next_time_mapping.xbase = 0;
1521 self->next_time_mapping.b = 0;
1522 self->next_time_mapping.num = 1;
1523 self->next_time_mapping.den = 1;
1524 g_mutex_unlock (&self->lock);
1525 res = self->input->input->StartStreams ();
1527 GST_ELEMENT_ERROR (self, STREAM, FAILED,
1528 (NULL), ("Failed to start streams: 0x%08lx", (unsigned long) res));
1532 GST_DEBUG_OBJECT (self, "Not starting streams yet");
1536 static GstStateChangeReturn
1537 gst_decklink_video_src_change_state (GstElement * element,
1538 GstStateChange transition)
1540 GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (element);
1541 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
1543 switch (transition) {
1544 case GST_STATE_CHANGE_NULL_TO_READY:
1545 self->processed = 0;
1547 self->expected_stream_time = GST_CLOCK_TIME_NONE;
1548 self->first_stream_time = GST_CLOCK_TIME_NONE;
1549 if (!gst_decklink_video_src_open (self)) {
1550 ret = GST_STATE_CHANGE_FAILURE;
1553 if (self->mode == GST_DECKLINK_MODE_AUTO &&
1554 self->video_format != GST_DECKLINK_VIDEO_FORMAT_AUTO) {
1555 GST_WARNING_OBJECT (self, "Warning: mode=auto and format!=auto may \
1558 self->vbiparser = NULL;
1559 self->anc_vformat = GST_VIDEO_FORMAT_UNKNOWN;
1560 self->anc_width = 0;
1562 case GST_STATE_CHANGE_READY_TO_PAUSED:
1563 self->flushing = FALSE;
1569 if (ret == GST_STATE_CHANGE_FAILURE)
1571 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1572 if (ret == GST_STATE_CHANGE_FAILURE)
1575 switch (transition) {
1576 case GST_STATE_CHANGE_PAUSED_TO_READY:
1577 self->signal_state = SIGNAL_STATE_UNKNOWN;
1579 gst_decklink_video_src_stop (self);
1581 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:{
1584 GST_DEBUG_OBJECT (self, "Stopping streams");
1586 res = self->input->input->StopStreams ();
1588 GST_ELEMENT_ERROR (self, STREAM, FAILED,
1589 (NULL), ("Failed to stop streams: 0x%08lx", (unsigned long) res));
1590 ret = GST_STATE_CHANGE_FAILURE;
1594 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
1595 g_mutex_lock (&self->input->lock);
1596 if (self->input->start_streams)
1597 self->input->start_streams (self->input->videosrc);
1598 g_mutex_unlock (&self->input->lock);
1602 case GST_STATE_CHANGE_READY_TO_NULL:
1603 gst_decklink_video_src_close (self);