2 * Copyright (C) 2011 David Schleef <ds@schleef.org>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
17 * Boston, MA 02110-1335, USA.
20 * SECTION:element-gstdecklinksrc
22 * The decklinksrc element is a source element for Blackmagic
26 * <title>Example launch line</title>
28 * gst-launch -v decklinksrc ! xvimagesink
39 #include "gstdecklink.h"
40 #include "gstdecklinksrc.h"
44 GST_DEBUG_CATEGORY (gst_decklink_src_debug_category);
45 #define GST_CAT_DEFAULT gst_decklink_src_debug_category
50 static void gst_decklink_src_set_property (GObject * object,
51 guint property_id, const GValue * value, GParamSpec * pspec);
52 static void gst_decklink_src_get_property (GObject * object,
53 guint property_id, GValue * value, GParamSpec * pspec);
54 static void gst_decklink_src_dispose (GObject * object);
55 static void gst_decklink_src_finalize (GObject * object);
57 static GstPad *gst_decklink_src_request_new_pad (GstElement * element,
58 GstPadTemplate * templ, const gchar * name);
59 static void gst_decklink_src_release_pad (GstElement * element, GstPad * pad);
60 static GstStateChangeReturn
61 gst_decklink_src_change_state (GstElement * element, GstStateChange transition);
62 static GstClock *gst_decklink_src_provide_clock (GstElement * element);
63 static gboolean gst_decklink_src_set_clock (GstElement * element,
65 static GstIndex *gst_decklink_src_get_index (GstElement * element);
66 static void gst_decklink_src_set_index (GstElement * element, GstIndex * index);
67 static gboolean gst_decklink_src_send_event (GstElement * element,
69 static gboolean gst_decklink_src_query (GstElement * element, GstQuery * query);
71 static GstCaps *gst_decklink_src_audio_src_getcaps (GstPad * pad);
72 static gboolean gst_decklink_src_audio_src_setcaps (GstPad * pad,
74 static gboolean gst_decklink_src_audio_src_acceptcaps (GstPad * pad,
76 static void gst_decklink_src_audio_src_fixatecaps (GstPad * pad,
78 static gboolean gst_decklink_src_audio_src_activate (GstPad * pad);
79 static gboolean gst_decklink_src_audio_src_activatepush (GstPad * pad,
81 static gboolean gst_decklink_src_audio_src_activatepull (GstPad * pad,
83 static GstPadLinkReturn gst_decklink_src_audio_src_link (GstPad * pad,
85 static GstFlowReturn gst_decklink_src_audio_src_getrange (GstPad * pad,
86 guint64 offset, guint length, GstBuffer ** buffer);
87 static gboolean gst_decklink_src_audio_src_event (GstPad * pad,
89 static gboolean gst_decklink_src_audio_src_query (GstPad * pad,
91 static GstIterator *gst_decklink_src_audio_src_iterintlink (GstPad * pad);
94 static GstCaps *gst_decklink_src_video_src_getcaps (GstPad * pad);
95 static gboolean gst_decklink_src_video_src_setcaps (GstPad * pad,
97 static gboolean gst_decklink_src_video_src_acceptcaps (GstPad * pad,
99 static void gst_decklink_src_video_src_fixatecaps (GstPad * pad,
101 static gboolean gst_decklink_src_video_src_activate (GstPad * pad);
102 static gboolean gst_decklink_src_video_src_activatepush (GstPad * pad,
104 static gboolean gst_decklink_src_video_src_activatepull (GstPad * pad,
106 static GstPadLinkReturn gst_decklink_src_video_src_link (GstPad * pad,
108 static GstFlowReturn gst_decklink_src_video_src_getrange (GstPad * pad,
109 guint64 offset, guint length, GstBuffer ** buffer);
110 static gboolean gst_decklink_src_video_src_event (GstPad * pad,
112 static gboolean gst_decklink_src_video_src_query (GstPad * pad,
114 static GstIterator *gst_decklink_src_video_src_iterintlink (GstPad * pad);
116 static void gst_decklink_src_task (void *priv);
119 /* COM initialization/uninitialization thread */
120 static void gst_decklink_src_com_thread (GstDecklinkSrc * src);
121 #endif /* _MSC_VER */
134 static GstStaticPadTemplate gst_decklink_src_audio_src_template =
135 GST_STATIC_PAD_TEMPLATE ("audiosrc",
138 GST_STATIC_CAPS ("audio/x-raw-int,width=16,depth=16,channels=2,rate=48000")
141 /* the video source pad template is created on the fly */
143 /* class initialization */
145 #define DEBUG_INIT(bla) \
146 GST_DEBUG_CATEGORY_INIT (gst_decklink_src_debug_category, "decklinksrc", 0, \
147 "debug category for decklinksrc element");
149 GST_BOILERPLATE_FULL (GstDecklinkSrc, gst_decklink_src, GstElement,
150 GST_TYPE_ELEMENT, DEBUG_INIT);
153 gst_decklink_src_base_init (gpointer g_class)
155 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
156 GstPadTemplate *pad_template;
158 gst_element_class_add_static_pad_template (element_class,
159 &gst_decklink_src_audio_src_template);
161 gst_pad_template_new ("videosrc", GST_PAD_SRC, GST_PAD_ALWAYS,
162 gst_decklink_mode_get_template_caps ());
163 gst_element_class_add_pad_template (element_class, pad_template);
164 gst_object_unref (pad_template);
166 gst_element_class_set_details_simple (element_class, "Decklink source",
167 "Source/Video", "DeckLink Source", "David Schleef <ds@entropywave.com>");
171 gst_decklink_src_class_init (GstDecklinkSrcClass * klass)
173 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
174 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
176 gobject_class->set_property = gst_decklink_src_set_property;
177 gobject_class->get_property = gst_decklink_src_get_property;
178 gobject_class->dispose = gst_decklink_src_dispose;
179 gobject_class->finalize = gst_decklink_src_finalize;
180 element_class->request_new_pad =
181 GST_DEBUG_FUNCPTR (gst_decklink_src_request_new_pad);
182 element_class->release_pad = GST_DEBUG_FUNCPTR (gst_decklink_src_release_pad);
183 element_class->change_state =
184 GST_DEBUG_FUNCPTR (gst_decklink_src_change_state);
185 element_class->provide_clock =
186 GST_DEBUG_FUNCPTR (gst_decklink_src_provide_clock);
187 element_class->set_clock = GST_DEBUG_FUNCPTR (gst_decklink_src_set_clock);
188 element_class->get_index = GST_DEBUG_FUNCPTR (gst_decklink_src_get_index);
189 element_class->set_index = GST_DEBUG_FUNCPTR (gst_decklink_src_set_index);
190 element_class->send_event = GST_DEBUG_FUNCPTR (gst_decklink_src_send_event);
191 element_class->query = GST_DEBUG_FUNCPTR (gst_decklink_src_query);
193 g_object_class_install_property (gobject_class, PROP_MODE,
194 g_param_spec_enum ("mode", "Mode", "Mode",
195 GST_TYPE_DECKLINK_MODE, GST_DECKLINK_MODE_NTSC,
196 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
197 G_PARAM_CONSTRUCT)));
199 g_object_class_install_property (gobject_class, PROP_CONNECTION,
200 g_param_spec_enum ("connection", "Connection", "Connection",
201 GST_TYPE_DECKLINK_CONNECTION, GST_DECKLINK_CONNECTION_SDI,
202 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
203 G_PARAM_CONSTRUCT)));
205 g_object_class_install_property (gobject_class, PROP_AUDIO_INPUT,
206 g_param_spec_enum ("audio-input", "Audio Input", "Audio Input Connection",
207 GST_TYPE_DECKLINK_AUDIO_CONNECTION,
208 GST_DECKLINK_AUDIO_CONNECTION_AUTO,
209 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
210 G_PARAM_CONSTRUCT)));
212 g_object_class_install_property (gobject_class, PROP_SUBDEVICE,
213 g_param_spec_int ("subdevice", "Subdevice", "Subdevice",
215 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
216 G_PARAM_CONSTRUCT)));
220 gst_decklink_src_init (GstDecklinkSrc * decklinksrc,
221 GstDecklinkSrcClass * decklinksrc_class)
223 g_static_rec_mutex_init (&decklinksrc->task_mutex);
224 decklinksrc->task = gst_task_create (gst_decklink_src_task, decklinksrc);
225 gst_task_set_lock (decklinksrc->task, &decklinksrc->task_mutex);
227 decklinksrc->audiosrcpad =
228 gst_pad_new_from_static_template (&gst_decklink_src_audio_src_template,
230 gst_pad_set_getcaps_function (decklinksrc->audiosrcpad,
231 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_getcaps));
232 gst_pad_set_setcaps_function (decklinksrc->audiosrcpad,
233 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_setcaps));
234 gst_pad_set_acceptcaps_function (decklinksrc->audiosrcpad,
235 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_acceptcaps));
236 gst_pad_set_fixatecaps_function (decklinksrc->audiosrcpad,
237 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_fixatecaps));
238 gst_pad_set_activate_function (decklinksrc->audiosrcpad,
239 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_activate));
240 gst_pad_set_activatepush_function (decklinksrc->audiosrcpad,
241 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_activatepush));
242 gst_pad_set_activatepull_function (decklinksrc->audiosrcpad,
243 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_activatepull));
244 gst_pad_set_link_function (decklinksrc->audiosrcpad,
245 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_link));
246 gst_pad_set_getrange_function (decklinksrc->audiosrcpad,
247 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_getrange));
248 gst_pad_set_event_function (decklinksrc->audiosrcpad,
249 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_event));
250 gst_pad_set_query_function (decklinksrc->audiosrcpad,
251 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_query));
252 gst_pad_set_iterate_internal_links_function (decklinksrc->audiosrcpad,
253 GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_iterintlink));
254 gst_element_add_pad (GST_ELEMENT (decklinksrc), decklinksrc->audiosrcpad);
258 decklinksrc->videosrcpad =
259 gst_pad_new_from_template (gst_element_class_get_pad_template
260 (GST_ELEMENT_CLASS (decklinksrc_class), "videosrc"), "videosrc");
261 gst_pad_set_getcaps_function (decklinksrc->videosrcpad,
262 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_getcaps));
263 gst_pad_set_setcaps_function (decklinksrc->videosrcpad,
264 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_setcaps));
265 gst_pad_set_acceptcaps_function (decklinksrc->videosrcpad,
266 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_acceptcaps));
267 gst_pad_set_fixatecaps_function (decklinksrc->videosrcpad,
268 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_fixatecaps));
269 gst_pad_set_activate_function (decklinksrc->videosrcpad,
270 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_activate));
271 gst_pad_set_activatepush_function (decklinksrc->videosrcpad,
272 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_activatepush));
273 gst_pad_set_activatepull_function (decklinksrc->videosrcpad,
274 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_activatepull));
275 gst_pad_set_link_function (decklinksrc->videosrcpad,
276 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_link));
277 gst_pad_set_getrange_function (decklinksrc->videosrcpad,
278 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_getrange));
279 gst_pad_set_event_function (decklinksrc->videosrcpad,
280 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_event));
281 gst_pad_set_query_function (decklinksrc->videosrcpad,
282 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_query));
283 gst_pad_set_iterate_internal_links_function (decklinksrc->videosrcpad,
284 GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_iterintlink));
285 gst_element_add_pad (GST_ELEMENT (decklinksrc), decklinksrc->videosrcpad);
288 decklinksrc->cond = g_cond_new ();
289 decklinksrc->mutex = g_mutex_new ();
291 decklinksrc->copy_data = TRUE;
292 decklinksrc->mode = GST_DECKLINK_MODE_NTSC;
293 decklinksrc->connection = GST_DECKLINK_CONNECTION_SDI;
294 decklinksrc->audio_connection = GST_DECKLINK_AUDIO_CONNECTION_AUTO;
295 decklinksrc->subdevice = 0;
297 decklinksrc->stop = FALSE;
298 decklinksrc->dropped_frames = 0;
299 decklinksrc->dropped_frames_old = 0;
300 decklinksrc->frame_num = -1; /* -1 so will be 0 after incrementing */
303 decklinksrc->com_init_lock = g_mutex_new();
304 decklinksrc->com_deinit_lock = g_mutex_new();
305 decklinksrc->com_initialized = g_cond_new();
306 decklinksrc->com_uninitialize = g_cond_new();
307 decklinksrc->com_uninitialized = g_cond_new();
309 g_mutex_lock (decklinksrc->com_init_lock);
311 /* create the COM initialization thread */
312 g_thread_create ((GThreadFunc)gst_decklink_src_com_thread,
313 decklinksrc, FALSE, NULL);
315 /* wait until the COM thread signals that COM has been initialized */
316 g_cond_wait (decklinksrc->com_initialized, decklinksrc->com_init_lock);
317 g_mutex_unlock (decklinksrc->com_init_lock);
318 #endif /* _MSC_VER */
322 gst_decklink_src_set_property (GObject * object, guint property_id,
323 const GValue * value, GParamSpec * pspec)
325 GstDecklinkSrc *decklinksrc;
327 g_return_if_fail (GST_IS_DECKLINK_SRC (object));
328 decklinksrc = GST_DECKLINK_SRC (object);
330 switch (property_id) {
332 decklinksrc->mode = (GstDecklinkModeEnum) g_value_get_enum (value);
334 case PROP_CONNECTION:
335 decklinksrc->connection =
336 (GstDecklinkConnectionEnum) g_value_get_enum (value);
338 case PROP_AUDIO_INPUT:
339 decklinksrc->audio_connection =
340 (GstDecklinkAudioConnectionEnum) g_value_get_enum (value);
343 decklinksrc->subdevice = g_value_get_int (value);
346 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
352 gst_decklink_src_get_property (GObject * object, guint property_id,
353 GValue * value, GParamSpec * pspec)
355 GstDecklinkSrc *decklinksrc;
357 g_return_if_fail (GST_IS_DECKLINK_SRC (object));
358 decklinksrc = GST_DECKLINK_SRC (object);
360 switch (property_id) {
362 g_value_set_enum (value, decklinksrc->mode);
364 case PROP_CONNECTION:
365 g_value_set_enum (value, decklinksrc->connection);
367 case PROP_AUDIO_INPUT:
368 g_value_set_enum (value, decklinksrc->audio_connection);
371 g_value_set_int (value, decklinksrc->subdevice);
374 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
381 gst_decklink_src_com_thread (GstDecklinkSrc * src)
385 g_mutex_lock (src->com_init_lock);
387 /* Initialize COM with a MTA for this process. This thread will
388 * be the first one to enter the apartement and the last one to leave
389 * it, unitializing COM properly */
391 res = CoInitializeEx (0, COINIT_MULTITHREADED);
393 GST_WARNING_OBJECT (src, "COM has been already initialized in the same process");
394 else if (res == RPC_E_CHANGED_MODE)
395 GST_WARNING_OBJECT (src, "The concurrency model of COM has changed.");
397 GST_INFO_OBJECT (src, "COM intialized succesfully");
399 src->comInitialized = TRUE;
401 /* Signal other threads waiting on this condition that COM was initialized */
402 g_cond_signal (src->com_initialized);
404 g_mutex_unlock (src->com_init_lock);
406 /* Wait until the unitialize condition is met to leave the COM apartement */
407 g_mutex_lock (src->com_deinit_lock);
408 g_cond_wait (src->com_uninitialize, src->com_deinit_lock);
411 GST_INFO_OBJECT (src, "COM unintialized succesfully");
412 src->comInitialized = FALSE;
413 g_cond_signal (src->com_uninitialized);
414 g_mutex_unlock (src->com_deinit_lock);
416 #endif /* _MSC_VER */
419 gst_decklink_src_dispose (GObject * object)
421 g_return_if_fail (GST_IS_DECKLINK_SRC (object));
423 /* clean up as possible. may be called multiple times */
425 G_OBJECT_CLASS (parent_class)->dispose (object);
429 gst_decklink_src_finalize (GObject * object)
431 GstDecklinkSrc *decklinksrc;
433 g_return_if_fail (GST_IS_DECKLINK_SRC (object));
434 decklinksrc = GST_DECKLINK_SRC (object);
436 /* clean up object here */
438 g_cond_free (decklinksrc->cond);
439 g_mutex_free (decklinksrc->mutex);
440 gst_task_set_lock (decklinksrc->task, NULL);
441 g_object_unref (decklinksrc->task);
442 if (decklinksrc->audio_caps) {
443 gst_caps_unref (decklinksrc->audio_caps);
445 if (decklinksrc->video_caps) {
446 gst_caps_unref (decklinksrc->video_caps);
450 /* signal the COM thread that it should uninitialize COM */
451 if (decklinksrc->comInitialized) {
452 g_mutex_lock (decklinksrc->com_deinit_lock);
453 g_cond_signal (decklinksrc->com_uninitialize);
454 g_cond_wait (decklinksrc->com_uninitialized, decklinksrc->com_deinit_lock);
455 g_mutex_unlock (decklinksrc->com_deinit_lock);
458 g_mutex_free (decklinksrc->com_init_lock);
459 g_mutex_free (decklinksrc->com_deinit_lock);
460 g_cond_free (decklinksrc->com_initialized);
461 g_cond_free (decklinksrc->com_uninitialize);
462 g_cond_free (decklinksrc->com_uninitialized);
463 #endif /* _MSC_VER */
465 G_OBJECT_CLASS (parent_class)->finalize (object);
471 gst_decklink_src_request_new_pad (GstElement * element, GstPadTemplate * templ,
479 gst_decklink_src_release_pad (GstElement * element, GstPad * pad)
485 gst_decklink_src_start (GstElement * element)
487 GstDecklinkSrc *decklinksrc = GST_DECKLINK_SRC (element);
488 IDeckLinkIterator *iterator;
489 DeckLinkCaptureDelegate *delegate;
490 //IDeckLinkDisplayModeIterator *mode_iterator;
491 //IDeckLinkDisplayMode *mode;
492 BMDAudioSampleType sample_depth;
495 const GstDecklinkMode *mode;
496 IDeckLinkConfiguration *config;
497 BMDVideoConnection conn;
498 BMDAudioConnection aconn;
501 GST_DEBUG_OBJECT (decklinksrc, "start");
503 iterator = CreateDeckLinkIteratorInstance ();
504 if (iterator == NULL) {
505 GST_ERROR ("no driver");
509 ret = iterator->Next (&decklinksrc->decklink);
511 GST_ERROR ("no card");
514 for (i = 0; i < decklinksrc->subdevice; i++) {
515 ret = iterator->Next (&decklinksrc->decklink);
517 GST_ERROR ("no card");
522 ret = decklinksrc->decklink->QueryInterface (IID_IDeckLinkInput,
523 (void **) &decklinksrc->input);
525 GST_ERROR ("query interface failed");
529 delegate = new DeckLinkCaptureDelegate ();
530 delegate->priv = decklinksrc;
531 decklinksrc->input->SetCallback (delegate);
533 ret = decklinksrc->decklink->QueryInterface (IID_IDeckLinkConfiguration,
536 GST_ERROR ("query interface failed");
540 switch (decklinksrc->connection) {
542 case GST_DECKLINK_CONNECTION_SDI:
543 conn = bmdVideoConnectionSDI;
544 aconn = bmdAudioConnectionEmbedded;
546 case GST_DECKLINK_CONNECTION_HDMI:
547 conn = bmdVideoConnectionHDMI;
548 aconn = bmdAudioConnectionEmbedded;
550 case GST_DECKLINK_CONNECTION_OPTICAL_SDI:
551 conn = bmdVideoConnectionOpticalSDI;
552 aconn = bmdAudioConnectionEmbedded;
554 case GST_DECKLINK_CONNECTION_COMPONENT:
555 conn = bmdVideoConnectionComponent;
556 aconn = bmdAudioConnectionAnalog;
558 case GST_DECKLINK_CONNECTION_COMPOSITE:
559 conn = bmdVideoConnectionComposite;
560 aconn = bmdAudioConnectionAnalog;
562 case GST_DECKLINK_CONNECTION_SVIDEO:
563 conn = bmdVideoConnectionSVideo;
564 aconn = bmdAudioConnectionAnalog;
568 ret = config->SetInt (bmdDeckLinkConfigVideoInputConnection, conn);
570 GST_ERROR ("set configuration (input source)");
574 if (decklinksrc->connection == GST_DECKLINK_CONNECTION_COMPOSITE) {
575 ret = config->SetInt (bmdDeckLinkConfigAnalogVideoInputFlags,
576 bmdAnalogVideoFlagCompositeSetup75);
578 GST_ERROR ("set configuration (composite setup)");
583 switch (decklinksrc->audio_connection) {
585 case GST_DECKLINK_AUDIO_CONNECTION_AUTO:
587 case GST_DECKLINK_AUDIO_CONNECTION_EMBEDDED:
588 aconn = bmdAudioConnectionEmbedded;
590 case GST_DECKLINK_AUDIO_CONNECTION_AES_EBU:
591 aconn = bmdAudioConnectionAESEBU;
593 case GST_DECKLINK_AUDIO_CONNECTION_ANALOG:
594 aconn = bmdAudioConnectionAnalog;
597 ret = config->SetInt (bmdDeckLinkConfigAudioInputConnection, aconn);
599 GST_ERROR ("set configuration (audio input connection)");
603 ret = decklinksrc->input->GetDisplayModeIterator (&mode_iterator);
605 GST_ERROR ("failed to get display mode iterator");
610 while (mode_iterator->Next (&mode) == S_OK) {
611 const char *mode_name;
613 mode->GetName (&mode_name);
615 GST_DEBUG ("%d: mode name: %s", i, mode_name);
622 mode = gst_decklink_get_mode (decklinksrc->mode);
624 ret = decklinksrc->input->EnableVideoInput (mode->mode, bmdFormat8BitYUV, 0);
626 GST_ERROR ("enable video input failed");
630 sample_depth = bmdAudioSampleType16bitInteger;
632 ret = decklinksrc->input->EnableAudioInput (bmdAudioSampleRate48kHz,
633 sample_depth, channels);
635 GST_ERROR ("enable video input failed");
639 ret = decklinksrc->input->StartStreams ();
641 GST_ERROR ("start streams failed");
645 g_static_rec_mutex_lock (&decklinksrc->task_mutex);
646 gst_task_start (decklinksrc->task);
647 g_static_rec_mutex_unlock (&decklinksrc->task_mutex);
653 gst_decklink_src_stop (GstElement * element)
655 GstDecklinkSrc *decklinksrc = GST_DECKLINK_SRC (element);
657 gst_task_stop (decklinksrc->task);
659 g_mutex_lock (decklinksrc->mutex);
660 decklinksrc->stop = TRUE;
661 g_cond_signal (decklinksrc->cond);
662 g_mutex_unlock (decklinksrc->mutex);
664 gst_task_join (decklinksrc->task);
666 decklinksrc->input->StopStreams ();
667 decklinksrc->input->DisableVideoInput ();
668 decklinksrc->input->DisableAudioInput ();
670 decklinksrc->input->Release ();
671 decklinksrc->input = NULL;
676 static GstStateChangeReturn
677 gst_decklink_src_change_state (GstElement * element, GstStateChange transition)
679 GstStateChangeReturn ret;
680 gboolean no_preroll = FALSE;
682 g_return_val_if_fail (GST_IS_DECKLINK_SRC (element),
683 GST_STATE_CHANGE_FAILURE);
685 switch (transition) {
686 case GST_STATE_CHANGE_NULL_TO_READY:
687 if (!gst_decklink_src_start (element)) {
688 ret = GST_STATE_CHANGE_FAILURE;
692 case GST_STATE_CHANGE_READY_TO_PAUSED:
695 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
701 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
703 switch (transition) {
704 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
707 case GST_STATE_CHANGE_PAUSED_TO_READY:
709 case GST_STATE_CHANGE_READY_TO_NULL:
710 gst_decklink_src_stop (element);
716 if (no_preroll && ret == GST_STATE_CHANGE_SUCCESS)
717 ret = GST_STATE_CHANGE_NO_PREROLL;
724 gst_decklink_src_provide_clock (GstElement * element)
731 gst_decklink_src_set_clock (GstElement * element, GstClock * clock)
738 gst_decklink_src_get_index (GstElement * element)
745 gst_decklink_src_set_index (GstElement * element, GstIndex * index)
751 gst_decklink_src_send_event (GstElement * element, GstEvent * event)
758 gst_decklink_src_query (GstElement * element, GstQuery * query)
765 gst_decklink_src_audio_src_getcaps (GstPad * pad)
767 GstDecklinkSrc *decklinksrc;
770 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
772 GST_DEBUG_OBJECT (decklinksrc, "getcaps");
774 caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
776 gst_object_unref (decklinksrc);
781 gst_decklink_src_audio_src_setcaps (GstPad * pad, GstCaps * caps)
783 GstDecklinkSrc *decklinksrc;
785 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
787 GST_DEBUG_OBJECT (decklinksrc, "setcaps");
790 gst_object_unref (decklinksrc);
795 gst_decklink_src_audio_src_acceptcaps (GstPad * pad, GstCaps * caps)
797 GstDecklinkSrc *decklinksrc;
799 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
801 GST_DEBUG_OBJECT (decklinksrc, "acceptcaps");
804 gst_object_unref (decklinksrc);
809 gst_decklink_src_audio_src_fixatecaps (GstPad * pad, GstCaps * caps)
811 GstDecklinkSrc *decklinksrc;
813 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
815 GST_DEBUG_OBJECT (decklinksrc, "fixatecaps");
818 gst_object_unref (decklinksrc);
822 gst_decklink_src_audio_src_activate (GstPad * pad)
824 GstDecklinkSrc *decklinksrc;
827 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
829 GST_DEBUG_OBJECT (decklinksrc, "activate");
831 if (gst_pad_check_pull_range (pad)) {
832 GST_DEBUG_OBJECT (pad, "activating pull");
833 ret = gst_pad_activate_pull (pad, TRUE);
835 GST_DEBUG_OBJECT (pad, "activating push");
836 ret = gst_pad_activate_push (pad, TRUE);
839 gst_object_unref (decklinksrc);
844 gst_decklink_src_audio_src_activatepush (GstPad * pad, gboolean active)
846 GstDecklinkSrc *decklinksrc;
848 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
850 GST_DEBUG_OBJECT (decklinksrc, "activatepush");
853 gst_object_unref (decklinksrc);
858 gst_decklink_src_audio_src_activatepull (GstPad * pad, gboolean active)
860 GstDecklinkSrc *decklinksrc;
862 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
864 GST_DEBUG_OBJECT (decklinksrc, "activatepull");
867 gst_object_unref (decklinksrc);
871 static GstPadLinkReturn
872 gst_decklink_src_audio_src_link (GstPad * pad, GstPad * peer)
874 GstDecklinkSrc *decklinksrc;
876 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
878 GST_DEBUG_OBJECT (decklinksrc, "link");
881 gst_object_unref (decklinksrc);
882 return GST_PAD_LINK_OK;
886 gst_decklink_src_audio_src_getrange (GstPad * pad, guint64 offset, guint length,
889 GstDecklinkSrc *decklinksrc;
891 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
893 GST_DEBUG_OBJECT (decklinksrc, "getrange");
896 gst_object_unref (decklinksrc);
901 gst_decklink_src_audio_src_event (GstPad * pad, GstEvent * event)
904 GstDecklinkSrc *decklinksrc;
906 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
908 GST_DEBUG_OBJECT (decklinksrc, "event");
910 switch (GST_EVENT_TYPE (event)) {
912 res = gst_pad_event_default (pad, event);
916 gst_object_unref (decklinksrc);
921 gst_decklink_src_audio_src_query (GstPad * pad, GstQuery * query)
924 GstDecklinkSrc *decklinksrc;
926 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
928 GST_DEBUG_OBJECT (decklinksrc, "query");
930 switch (GST_QUERY_TYPE (query)) {
932 res = gst_pad_query_default (pad, query);
936 gst_object_unref (decklinksrc);
941 gst_decklink_src_audio_src_iterintlink (GstPad * pad)
943 GstDecklinkSrc *decklinksrc;
946 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
948 GST_DEBUG_OBJECT (decklinksrc, "iterintlink");
950 iter = gst_pad_iterate_internal_links_default (pad);
952 gst_object_unref (decklinksrc);
958 gst_decklink_src_video_src_getcaps (GstPad * pad)
960 GstDecklinkSrc *decklinksrc;
963 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
965 GST_DEBUG_OBJECT (decklinksrc, "getcaps");
967 caps = gst_decklink_mode_get_caps (decklinksrc->mode);
969 gst_object_unref (decklinksrc);
974 gst_decklink_src_video_src_setcaps (GstPad * pad, GstCaps * caps)
976 GstDecklinkSrc *decklinksrc;
978 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
980 GST_DEBUG_OBJECT (decklinksrc, "setcaps");
983 gst_object_unref (decklinksrc);
988 gst_decklink_src_video_src_acceptcaps (GstPad * pad, GstCaps * caps)
990 GstDecklinkSrc *decklinksrc;
992 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
994 GST_DEBUG_OBJECT (decklinksrc, "acceptcaps");
997 gst_object_unref (decklinksrc);
1002 gst_decklink_src_video_src_fixatecaps (GstPad * pad, GstCaps * caps)
1004 GstDecklinkSrc *decklinksrc;
1006 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1008 GST_DEBUG_OBJECT (decklinksrc, "fixatecaps");
1011 gst_object_unref (decklinksrc);
1015 gst_decklink_src_video_src_activate (GstPad * pad)
1017 GstDecklinkSrc *decklinksrc;
1020 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1022 GST_DEBUG_OBJECT (decklinksrc, "activate");
1024 if (gst_pad_check_pull_range (pad)) {
1025 GST_DEBUG_OBJECT (pad, "activating pull");
1026 ret = gst_pad_activate_pull (pad, TRUE);
1028 GST_DEBUG_OBJECT (pad, "activating push");
1029 ret = gst_pad_activate_push (pad, TRUE);
1032 gst_object_unref (decklinksrc);
1037 gst_decklink_src_video_src_activatepush (GstPad * pad, gboolean active)
1039 GstDecklinkSrc *decklinksrc;
1041 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1043 GST_DEBUG_OBJECT (decklinksrc, "activatepush");
1046 gst_object_unref (decklinksrc);
1051 gst_decklink_src_video_src_activatepull (GstPad * pad, gboolean active)
1053 GstDecklinkSrc *decklinksrc;
1055 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1057 GST_DEBUG_OBJECT (decklinksrc, "activatepull");
1060 gst_object_unref (decklinksrc);
1064 static GstPadLinkReturn
1065 gst_decklink_src_video_src_link (GstPad * pad, GstPad * peer)
1067 GstDecklinkSrc *decklinksrc;
1069 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1071 GST_DEBUG_OBJECT (decklinksrc, "link");
1074 gst_object_unref (decklinksrc);
1075 return GST_PAD_LINK_OK;
1078 static GstFlowReturn
1079 gst_decklink_src_video_src_getrange (GstPad * pad, guint64 offset, guint length,
1080 GstBuffer ** buffer)
1082 GstDecklinkSrc *decklinksrc;
1084 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1086 GST_DEBUG_OBJECT (decklinksrc, "getrange");
1089 gst_object_unref (decklinksrc);
1094 gst_decklink_src_video_src_event (GstPad * pad, GstEvent * event)
1097 GstDecklinkSrc *decklinksrc;
1099 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1101 GST_DEBUG_OBJECT (decklinksrc, "event");
1103 switch (GST_EVENT_TYPE (event)) {
1105 res = gst_pad_event_default (pad, event);
1109 gst_object_unref (decklinksrc);
1114 gst_decklink_src_video_src_query (GstPad * pad, GstQuery * query)
1117 GstDecklinkSrc *decklinksrc;
1119 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1121 GST_DEBUG_OBJECT (decklinksrc, "query");
1123 switch (GST_QUERY_TYPE (query)) {
1125 res = gst_pad_query_default (pad, query);
1129 gst_object_unref (decklinksrc);
1133 static GstIterator *
1134 gst_decklink_src_video_src_iterintlink (GstPad * pad)
1136 GstDecklinkSrc *decklinksrc;
1139 decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
1141 GST_DEBUG_OBJECT (decklinksrc, "iterintlink");
1143 iter = gst_pad_iterate_internal_links_default (pad);
1145 gst_object_unref (decklinksrc);
1151 video_frame_free (void *data)
1153 IDeckLinkVideoInputFrame *video_frame = (IDeckLinkVideoInputFrame *) data;
1155 video_frame->Release ();
1159 gst_decklink_src_task (void *priv)
1161 GstDecklinkSrc *decklinksrc = GST_DECKLINK_SRC (priv);
1163 GstBuffer *audio_buffer;
1164 IDeckLinkVideoInputFrame *video_frame;
1165 IDeckLinkAudioInputPacket *audio_frame;
1169 const GstDecklinkMode *mode;
1171 GST_DEBUG_OBJECT (decklinksrc, "task");
1173 g_mutex_lock (decklinksrc->mutex);
1174 while (decklinksrc->video_frame == NULL && !decklinksrc->stop) {
1175 g_cond_wait (decklinksrc->cond, decklinksrc->mutex);
1177 video_frame = decklinksrc->video_frame;
1178 audio_frame = decklinksrc->audio_frame;
1179 decklinksrc->video_frame = NULL;
1180 decklinksrc->audio_frame = NULL;
1181 g_mutex_unlock (decklinksrc->mutex);
1183 if (decklinksrc->stop) {
1184 GST_DEBUG ("stopping task");
1188 /* warning on dropped frames */
1189 if (decklinksrc->dropped_frames - decklinksrc->dropped_frames_old > 0) {
1190 GST_ELEMENT_WARNING (decklinksrc, RESOURCE, READ,
1191 ("Dropped %d frame(s), for a total of %d frame(s)",
1192 decklinksrc->dropped_frames - decklinksrc->dropped_frames_old,
1193 decklinksrc->dropped_frames),
1195 decklinksrc->dropped_frames_old = decklinksrc->dropped_frames;
1198 mode = gst_decklink_get_mode (decklinksrc->mode);
1200 video_frame->GetBytes (&data);
1201 if (decklinksrc->copy_data) {
1202 buffer = gst_buffer_new_and_alloc (mode->width * mode->height * 2);
1204 memcpy (GST_BUFFER_DATA (buffer), data, mode->width * mode->height * 2);
1206 video_frame->Release ();
1208 buffer = gst_buffer_new ();
1209 GST_BUFFER_SIZE (buffer) = mode->width * mode->height * 2;
1211 GST_BUFFER_DATA (buffer) = (guint8 *) data;
1213 GST_BUFFER_FREE_FUNC (buffer) = video_frame_free;
1214 GST_BUFFER_MALLOCDATA (buffer) = (guint8 *) video_frame;
1217 GST_BUFFER_TIMESTAMP (buffer) =
1218 gst_util_uint64_scale_int (decklinksrc->frame_num * GST_SECOND,
1219 mode->fps_d, mode->fps_n);
1220 GST_BUFFER_DURATION (buffer) =
1221 gst_util_uint64_scale_int ((decklinksrc->frame_num + 1) * GST_SECOND,
1222 mode->fps_d, mode->fps_n) - GST_BUFFER_TIMESTAMP (buffer);
1223 GST_BUFFER_OFFSET (buffer) = decklinksrc->frame_num;
1224 GST_BUFFER_OFFSET_END (buffer) = decklinksrc->frame_num;
1225 if (decklinksrc->frame_num == 0) {
1229 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
1231 event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0,
1232 GST_CLOCK_TIME_NONE, 0);
1234 ret = gst_pad_push_event (decklinksrc->videosrcpad, event);
1236 GST_ERROR_OBJECT (decklinksrc, "new segment event ret=%d", ret);
1241 if (decklinksrc->video_caps == NULL) {
1242 decklinksrc->video_caps = gst_decklink_mode_get_caps (decklinksrc->mode);
1244 gst_buffer_set_caps (buffer, decklinksrc->video_caps);
1246 ret = gst_pad_push (decklinksrc->videosrcpad, buffer);
1247 if (ret != GST_FLOW_OK) {
1248 GST_ELEMENT_ERROR (decklinksrc, CORE, NEGOTIATION, (NULL), (NULL));
1251 if (gst_pad_is_linked (decklinksrc->audiosrcpad)) {
1252 n_samples = audio_frame->GetSampleFrameCount ();
1253 audio_frame->GetBytes (&data);
1254 audio_buffer = gst_buffer_new_and_alloc (n_samples * 2 * 2);
1255 memcpy (GST_BUFFER_DATA (audio_buffer), data, n_samples * 2 * 2);
1257 GST_BUFFER_TIMESTAMP (audio_buffer) =
1258 gst_util_uint64_scale_int (decklinksrc->num_audio_samples * GST_SECOND,
1260 GST_BUFFER_DURATION (audio_buffer) =
1261 gst_util_uint64_scale_int ((decklinksrc->num_audio_samples +
1262 n_samples) * GST_SECOND, 1,
1263 48000) - GST_BUFFER_TIMESTAMP (audio_buffer);
1264 decklinksrc->num_audio_samples += n_samples;
1266 if (decklinksrc->audio_caps == NULL) {
1267 decklinksrc->audio_caps = gst_caps_new_simple ("audio/x-raw-int",
1268 "endianness", G_TYPE_INT, G_LITTLE_ENDIAN,
1269 "signed", G_TYPE_BOOLEAN, TRUE,
1270 "depth", G_TYPE_INT, 16,
1271 "width", G_TYPE_INT, 16,
1272 "channels", G_TYPE_INT, 2, "rate", G_TYPE_INT, 48000, NULL);
1274 gst_buffer_set_caps (audio_buffer, decklinksrc->audio_caps);
1276 ret = gst_pad_push (decklinksrc->audiosrcpad, audio_buffer);
1277 if (ret != GST_FLOW_OK) {
1278 GST_ELEMENT_ERROR (decklinksrc, CORE, NEGOTIATION, (NULL), (NULL));
1281 audio_frame->Release ();