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* Copyright (C) 2011 David Schleef <ds@schleef.org>
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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* SECTION:element-gstdecklinksrc
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* The decklinksrc element is a source element for Blackmagic
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* <title>Example launch line</title>
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* gst-launch -v decklinksrc ! xvimagesink
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#include "gstdecklinksrc.h"
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GST_DEBUG_CATEGORY_STATIC (gst_decklink_src_debug_category);
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#define GST_CAT_DEFAULT gst_decklink_src_debug_category
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static void gst_decklink_src_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_decklink_src_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_decklink_src_dispose (GObject * object);
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static void gst_decklink_src_finalize (GObject * object);
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static GstPad *gst_decklink_src_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * name);
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static void gst_decklink_src_release_pad (GstElement * element, GstPad * pad);
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static GstStateChangeReturn
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gst_decklink_src_change_state (GstElement * element, GstStateChange transition);
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static GstClock *gst_decklink_src_provide_clock (GstElement * element);
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static gboolean gst_decklink_src_set_clock (GstElement * element,
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static GstIndex *gst_decklink_src_get_index (GstElement * element);
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static void gst_decklink_src_set_index (GstElement * element, GstIndex * index);
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static gboolean gst_decklink_src_send_event (GstElement * element,
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static gboolean gst_decklink_src_query (GstElement * element, GstQuery * query);
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static GstCaps *gst_decklink_src_audio_src_getcaps (GstPad * pad);
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static gboolean gst_decklink_src_audio_src_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_decklink_src_audio_src_acceptcaps (GstPad * pad, GstCaps * caps);
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static void gst_decklink_src_audio_src_fixatecaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_decklink_src_audio_src_activate (GstPad * pad);
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static gboolean gst_decklink_src_audio_src_activatepush (GstPad * pad,
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static gboolean gst_decklink_src_audio_src_activatepull (GstPad * pad,
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static GstPadLinkReturn gst_decklink_src_audio_src_link (GstPad * pad, GstPad * peer);
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static GstFlowReturn gst_decklink_src_audio_src_getrange (GstPad * pad,
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guint64 offset, guint length, GstBuffer ** buffer);
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static gboolean gst_decklink_src_audio_src_event (GstPad * pad, GstEvent * event);
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static gboolean gst_decklink_src_audio_src_query (GstPad * pad, GstQuery * query);
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static GstIterator *gst_decklink_src_audio_src_iterintlink (GstPad * pad);
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static GstCaps *gst_decklink_src_video_src_getcaps (GstPad * pad);
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static gboolean gst_decklink_src_video_src_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_decklink_src_video_src_acceptcaps (GstPad * pad, GstCaps * caps);
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static void gst_decklink_src_video_src_fixatecaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_decklink_src_video_src_activate (GstPad * pad);
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static gboolean gst_decklink_src_video_src_activatepush (GstPad * pad,
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static gboolean gst_decklink_src_video_src_activatepull (GstPad * pad,
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static GstPadLinkReturn gst_decklink_src_video_src_link (GstPad * pad, GstPad * peer);
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static GstFlowReturn gst_decklink_src_video_src_getrange (GstPad * pad,
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guint64 offset, guint length, GstBuffer ** buffer);
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static gboolean gst_decklink_src_video_src_event (GstPad * pad, GstEvent * event);
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static gboolean gst_decklink_src_video_src_query (GstPad * pad, GstQuery * query);
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static GstIterator *gst_decklink_src_video_src_iterintlink (GstPad * pad);
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static void gst_decklink_src_task (void *priv);
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static GstStaticPadTemplate gst_decklink_src_audio_src_template =
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GST_STATIC_PAD_TEMPLATE ("audiosrc",
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GST_STATIC_CAPS ("audio/x-raw-int,width=16,depth=16,channels=2,rate=48000")
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#define MODE(w,h,n,d,i) \
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"video/x-raw-yuv,format=(fourcc)UYVY,width=" #w ",height=" #h \
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",framerate=" #n "/" #d ",interlaced=" #i
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static GstStaticPadTemplate gst_decklink_src_video_src_template =
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GST_STATIC_PAD_TEMPLATE ("videosrc",
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MODE(720,486,30000,1001,true) ";"
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MODE(720,486,24000,1001,true) ";"
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MODE(720,576,25,1,true) ";"
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MODE(1920,1080,24000,1001,false) ";"
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MODE(1920,1080,24,1,false) ";"
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MODE(1920,1080,25,1,false) ";"
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MODE(1920,1080,30000,1001,false) ";"
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MODE(1920,1080,30,1,false) ";"
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MODE(1920,1080,25,1,true) ";"
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MODE(1920,1080,30000,1001,true) ";"
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MODE(1920,1080,30,1,true) ";"
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MODE(1280,720,50,1,true) ";"
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MODE(1280,720,60000,1001,true) ";"
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MODE(1280,720,60,1,true)
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typedef struct _DecklinkMode DecklinkMode;
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struct _DecklinkMode {
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static DecklinkMode modes[] = {
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{ bmdModeNTSC, 720,486,30000,1001,true },
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{ bmdModeNTSC2398, 720,486,24000,1001,true },
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{ bmdModePAL, 720,576,25,1,true },
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{ bmdModeHD1080p2398, 1920,1080,24000,1001,false },
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{ bmdModeHD1080p24, 1920,1080,24,1,false },
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{ bmdModeHD1080p25, 1920,1080,25,1,false },
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{ bmdModeHD1080p2997, 1920,1080,30000,1001,false },
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{ bmdModeHD1080p30, 1920,1080,30,1,false },
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{ bmdModeHD1080i50, 1920,1080,25,1,true },
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{ bmdModeHD1080i5994, 1920,1080,30000,1001,true },
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{ bmdModeHD1080i6000, 1920,1080,30,1,true },
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{ bmdModeHD720p50, 1280,720,50,1,true },
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{ bmdModeHD720p5994, 1280,720,60000,1001,true },
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{ bmdModeHD720p60, 1280,720,60,1,true }
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/* class initialization */
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_decklink_src_debug_category, "decklinksrc", 0, \
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"debug category for decklinksrc element");
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GST_BOILERPLATE_FULL (GstDecklinkSrc, gst_decklink_src, GstElement,
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GST_TYPE_ELEMENT, DEBUG_INIT);
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gst_decklink_src_base_init (gpointer g_class)
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_decklink_src_audio_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_decklink_src_video_src_template));
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gst_element_class_set_details_simple (element_class, "Decklink source",
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"Source/Video", "DeckLink Source", "David Schleef <ds@entropywave.com>");
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gst_decklink_src_class_init (GstDecklinkSrcClass * klass)
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gobject_class->set_property = gst_decklink_src_set_property;
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gobject_class->get_property = gst_decklink_src_get_property;
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gobject_class->dispose = gst_decklink_src_dispose;
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gobject_class->finalize = gst_decklink_src_finalize;
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element_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_decklink_src_request_new_pad);
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element_class->release_pad = GST_DEBUG_FUNCPTR (gst_decklink_src_release_pad);
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element_class->change_state =
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GST_DEBUG_FUNCPTR (gst_decklink_src_change_state);
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element_class->provide_clock =
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GST_DEBUG_FUNCPTR (gst_decklink_src_provide_clock);
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element_class->set_clock = GST_DEBUG_FUNCPTR (gst_decklink_src_set_clock);
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element_class->get_index = GST_DEBUG_FUNCPTR (gst_decklink_src_get_index);
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element_class->set_index = GST_DEBUG_FUNCPTR (gst_decklink_src_set_index);
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element_class->send_event = GST_DEBUG_FUNCPTR (gst_decklink_src_send_event);
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element_class->query = GST_DEBUG_FUNCPTR (gst_decklink_src_query);
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gst_decklink_src_init (GstDecklinkSrc * decklinksrc,
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GstDecklinkSrcClass * decklinksrc_class)
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g_static_rec_mutex_init (&decklinksrc->task_mutex);
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decklinksrc->task = gst_task_create (gst_decklink_src_task, decklinksrc);
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gst_task_set_lock (decklinksrc->task, &decklinksrc->task_mutex);
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decklinksrc->audiosrcpad =
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gst_pad_new_from_static_template (&gst_decklink_src_audio_src_template, "audiosrc");
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gst_pad_set_getcaps_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_getcaps));
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gst_pad_set_setcaps_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_setcaps));
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gst_pad_set_acceptcaps_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_acceptcaps));
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gst_pad_set_fixatecaps_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_fixatecaps));
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gst_pad_set_activate_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_activate));
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gst_pad_set_activatepush_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_activatepush));
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gst_pad_set_activatepull_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_activatepull));
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gst_pad_set_link_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_link));
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gst_pad_set_getrange_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_getrange));
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gst_pad_set_event_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_event));
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gst_pad_set_query_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_query));
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gst_pad_set_iterate_internal_links_function (decklinksrc->audiosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_audio_src_iterintlink));
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gst_element_add_pad (GST_ELEMENT (decklinksrc), decklinksrc->audiosrcpad);
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decklinksrc->videosrcpad =
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gst_pad_new_from_static_template (&gst_decklink_src_video_src_template, "videosrc");
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gst_pad_set_getcaps_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_getcaps));
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gst_pad_set_setcaps_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_setcaps));
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gst_pad_set_acceptcaps_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_acceptcaps));
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gst_pad_set_fixatecaps_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_fixatecaps));
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gst_pad_set_activate_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_activate));
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gst_pad_set_activatepush_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_activatepush));
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gst_pad_set_activatepull_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_activatepull));
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gst_pad_set_link_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_link));
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gst_pad_set_getrange_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_getrange));
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gst_pad_set_event_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_event));
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gst_pad_set_query_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_query));
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gst_pad_set_iterate_internal_links_function (decklinksrc->videosrcpad,
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GST_DEBUG_FUNCPTR (gst_decklink_src_video_src_iterintlink));
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gst_element_add_pad (GST_ELEMENT (decklinksrc), decklinksrc->videosrcpad);
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decklinksrc->cond = g_cond_new();
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decklinksrc->mutex = g_mutex_new();
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decklinksrc->copy_data = TRUE;
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decklinksrc->mode = 0;
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decklinksrc->width = modes[decklinksrc->mode].width;
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decklinksrc->height = modes[decklinksrc->mode].height;
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decklinksrc->fps_n = modes[decklinksrc->mode].fps_n;
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decklinksrc->fps_d = modes[decklinksrc->mode].fps_d;
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decklinksrc->interlaced = modes[decklinksrc->mode].interlaced;
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decklinksrc->bmd_mode = modes[decklinksrc->mode].mode;
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gst_decklink_src_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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GstDecklinkSrc *decklinksrc;
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g_return_if_fail (GST_IS_DECKLINK_SRC (object));
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decklinksrc = GST_DECKLINK_SRC (object);
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switch (property_id) {
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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gst_decklink_src_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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GstDecklinkSrc *decklinksrc;
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g_return_if_fail (GST_IS_DECKLINK_SRC (object));
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decklinksrc = GST_DECKLINK_SRC (object);
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switch (property_id) {
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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gst_decklink_src_dispose (GObject * object)
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GstDecklinkSrc *decklinksrc;
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g_return_if_fail (GST_IS_DECKLINK_SRC (object));
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decklinksrc = GST_DECKLINK_SRC (object);
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/* clean up as possible. may be called multiple times */
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G_OBJECT_CLASS (parent_class)->dispose (object);
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gst_decklink_src_finalize (GObject * object)
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GstDecklinkSrc *decklinksrc;
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g_return_if_fail (GST_IS_DECKLINK_SRC (object));
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decklinksrc = GST_DECKLINK_SRC (object);
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/* clean up object here */
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g_cond_free (decklinksrc->cond);
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g_mutex_free (decklinksrc->mutex);
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gst_task_set_lock (decklinksrc->task, NULL);
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g_object_unref (decklinksrc->task);
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if (decklinksrc->audio_caps) {
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gst_caps_unref (decklinksrc->audio_caps);
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if (decklinksrc->video_caps) {
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gst_caps_unref (decklinksrc->video_caps);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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gst_decklink_src_request_new_pad (GstElement * element, GstPadTemplate * templ,
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gst_decklink_src_release_pad (GstElement * element, GstPad * pad)
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gst_decklink_src_start (GstElement * element)
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GstDecklinkSrc *decklinksrc = GST_DECKLINK_SRC (element);
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IDeckLinkIterator *iterator;
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DeckLinkCaptureDelegate *delegate;
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IDeckLinkDisplayModeIterator *mode_iterator;
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IDeckLinkDisplayMode *mode;
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BMDVideoInputFlags input_flags;
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BMDDisplayMode selected_mode;
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BMDPixelFormat pixel_format;
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GST_DEBUG_OBJECT (decklinksrc, "start");
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iterator = CreateDeckLinkIteratorInstance ();
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if (iterator == NULL) {
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GST_ERROR("no driver");
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ret = iterator->Next (&decklinksrc->decklink);
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GST_ERROR("no card");
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ret = decklinksrc->decklink->QueryInterface (IID_IDeckLinkInput,
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(void **) &decklinksrc->input);
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GST_ERROR ("query interface failed");
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delegate = new DeckLinkCaptureDelegate ();
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delegate->priv = decklinksrc;
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decklinksrc->input->SetCallback (delegate);
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ret = decklinksrc->input->GetDisplayModeIterator (&mode_iterator);
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GST_ERROR("failed to get display mode iterator");
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while (mode_iterator->Next (&mode) == S_OK) {
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const char *mode_name;
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mode->GetName (&mode_name);
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GST_ERROR("%d: mode name: %s", i, mode_name);
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pixel_format = bmdFormat8BitYUV;
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selected_mode = decklinksrc->bmd_mode;
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ret = decklinksrc->input->EnableVideoInput (selected_mode, pixel_format,
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GST_ERROR("enable video input failed");
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ret = decklinksrc->input->EnableAudioInput (bmdAudioSampleRate48kHz, sample_depth,
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GST_ERROR("enable video input failed");
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ret = decklinksrc->input->StartStreams ();
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GST_ERROR("start streams failed");
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g_static_rec_mutex_lock (&decklinksrc->task_mutex);
472
gst_task_start (decklinksrc->task);
473
g_static_rec_mutex_unlock (&decklinksrc->task_mutex);
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gst_decklink_src_stop (GstElement * element)
481
GstDecklinkSrc *decklinksrc = GST_DECKLINK_SRC (element);
483
gst_task_stop (decklinksrc->task);
485
g_mutex_lock (decklinksrc->mutex);
486
decklinksrc->stop = TRUE;
487
g_cond_signal (decklinksrc->cond);
488
g_mutex_unlock (decklinksrc->mutex);
490
gst_task_join (decklinksrc->task);
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static GstStateChangeReturn
496
gst_decklink_src_change_state (GstElement * element, GstStateChange transition)
498
GstDecklinkSrc *decklinksrc;
499
GstStateChangeReturn ret;
500
gboolean no_preroll = FALSE;
502
g_return_val_if_fail (GST_IS_DECKLINK_SRC (element),
503
GST_STATE_CHANGE_FAILURE);
504
decklinksrc = GST_DECKLINK_SRC (element);
506
switch (transition) {
507
case GST_STATE_CHANGE_NULL_TO_READY:
508
if (!gst_decklink_src_start (element)) {
509
ret = GST_STATE_CHANGE_FAILURE;
513
case GST_STATE_CHANGE_READY_TO_PAUSED:
516
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
522
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
524
switch (transition) {
525
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
528
case GST_STATE_CHANGE_PAUSED_TO_READY:
530
case GST_STATE_CHANGE_READY_TO_NULL:
531
gst_decklink_src_stop (element);
537
if (no_preroll && ret == GST_STATE_CHANGE_SUCCESS)
538
ret = GST_STATE_CHANGE_NO_PREROLL;
545
gst_decklink_src_provide_clock (GstElement * element)
552
gst_decklink_src_set_clock (GstElement * element, GstClock * clock)
559
gst_decklink_src_get_index (GstElement * element)
566
gst_decklink_src_set_index (GstElement * element, GstIndex * index)
572
gst_decklink_src_send_event (GstElement * element, GstEvent * event)
579
gst_decklink_src_query (GstElement * element, GstQuery * query)
586
gst_decklink_src_audio_src_getcaps (GstPad * pad)
588
GstDecklinkSrc *decklinksrc;
591
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
593
GST_DEBUG_OBJECT (decklinksrc, "getcaps");
595
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
597
gst_object_unref (decklinksrc);
602
gst_decklink_src_audio_src_setcaps (GstPad * pad, GstCaps * caps)
604
GstDecklinkSrc *decklinksrc;
606
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
608
GST_DEBUG_OBJECT (decklinksrc, "setcaps");
611
gst_object_unref (decklinksrc);
616
gst_decklink_src_audio_src_acceptcaps (GstPad * pad, GstCaps * caps)
618
GstDecklinkSrc *decklinksrc;
620
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
622
GST_DEBUG_OBJECT (decklinksrc, "acceptcaps");
625
gst_object_unref (decklinksrc);
630
gst_decklink_src_audio_src_fixatecaps (GstPad * pad, GstCaps * caps)
632
GstDecklinkSrc *decklinksrc;
634
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
636
GST_DEBUG_OBJECT (decklinksrc, "fixatecaps");
639
gst_object_unref (decklinksrc);
643
gst_decklink_src_audio_src_activate (GstPad * pad)
645
GstDecklinkSrc *decklinksrc;
648
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
650
GST_DEBUG_OBJECT (decklinksrc, "activate");
652
if (gst_pad_check_pull_range (pad)) {
653
GST_DEBUG_OBJECT (pad, "activating pull");
654
ret = gst_pad_activate_pull (pad, TRUE);
656
GST_DEBUG_OBJECT (pad, "activating push");
657
ret = gst_pad_activate_push (pad, TRUE);
660
gst_object_unref (decklinksrc);
665
gst_decklink_src_audio_src_activatepush (GstPad * pad, gboolean active)
667
GstDecklinkSrc *decklinksrc;
669
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
671
GST_DEBUG_OBJECT (decklinksrc, "activatepush");
674
gst_object_unref (decklinksrc);
679
gst_decklink_src_audio_src_activatepull (GstPad * pad, gboolean active)
681
GstDecklinkSrc *decklinksrc;
683
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
685
GST_DEBUG_OBJECT (decklinksrc, "activatepull");
688
gst_object_unref (decklinksrc);
692
static GstPadLinkReturn
693
gst_decklink_src_audio_src_link (GstPad * pad, GstPad * peer)
695
GstDecklinkSrc *decklinksrc;
697
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
699
GST_DEBUG_OBJECT (decklinksrc, "link");
702
gst_object_unref (decklinksrc);
703
return GST_PAD_LINK_OK;
707
gst_decklink_src_audio_src_getrange (GstPad * pad, guint64 offset, guint length,
710
GstDecklinkSrc *decklinksrc;
712
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
714
GST_DEBUG_OBJECT (decklinksrc, "getrange");
717
gst_object_unref (decklinksrc);
722
gst_decklink_src_audio_src_event (GstPad * pad, GstEvent * event)
725
GstDecklinkSrc *decklinksrc;
727
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
729
GST_DEBUG_OBJECT (decklinksrc, "event");
731
switch (GST_EVENT_TYPE (event)) {
733
res = gst_pad_event_default (pad, event);
737
gst_object_unref (decklinksrc);
742
gst_decklink_src_audio_src_query (GstPad * pad, GstQuery * query)
745
GstDecklinkSrc *decklinksrc;
747
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
749
GST_DEBUG_OBJECT (decklinksrc, "query");
751
switch (GST_QUERY_TYPE (query)) {
753
res = gst_pad_query_default (pad, query);
757
gst_object_unref (decklinksrc);
762
gst_decklink_src_audio_src_iterintlink (GstPad * pad)
764
GstDecklinkSrc *decklinksrc;
767
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
769
GST_DEBUG_OBJECT (decklinksrc, "iterintlink");
771
iter = gst_pad_iterate_internal_links_default (pad);
773
gst_object_unref (decklinksrc);
779
gst_decklink_src_video_src_getcaps (GstPad * pad)
781
GstDecklinkSrc *decklinksrc;
784
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
786
GST_DEBUG_OBJECT (decklinksrc, "getcaps");
788
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
790
gst_object_unref (decklinksrc);
795
gst_decklink_src_video_src_setcaps (GstPad * pad, GstCaps * caps)
797
GstDecklinkSrc *decklinksrc;
799
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
801
GST_DEBUG_OBJECT (decklinksrc, "setcaps");
804
gst_object_unref (decklinksrc);
809
gst_decklink_src_video_src_acceptcaps (GstPad * pad, GstCaps * caps)
811
GstDecklinkSrc *decklinksrc;
813
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
815
GST_DEBUG_OBJECT (decklinksrc, "acceptcaps");
818
gst_object_unref (decklinksrc);
823
gst_decklink_src_video_src_fixatecaps (GstPad * pad, GstCaps * caps)
825
GstDecklinkSrc *decklinksrc;
827
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
829
GST_DEBUG_OBJECT (decklinksrc, "fixatecaps");
832
gst_object_unref (decklinksrc);
836
gst_decklink_src_video_src_activate (GstPad * pad)
838
GstDecklinkSrc *decklinksrc;
841
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
843
GST_DEBUG_OBJECT (decklinksrc, "activate");
845
if (gst_pad_check_pull_range (pad)) {
846
GST_DEBUG_OBJECT (pad, "activating pull");
847
ret = gst_pad_activate_pull (pad, TRUE);
849
GST_DEBUG_OBJECT (pad, "activating push");
850
ret = gst_pad_activate_push (pad, TRUE);
853
gst_object_unref (decklinksrc);
858
gst_decklink_src_video_src_activatepush (GstPad * pad, gboolean active)
860
GstDecklinkSrc *decklinksrc;
862
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
864
GST_DEBUG_OBJECT (decklinksrc, "activatepush");
867
gst_object_unref (decklinksrc);
872
gst_decklink_src_video_src_activatepull (GstPad * pad, gboolean active)
874
GstDecklinkSrc *decklinksrc;
876
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
878
GST_DEBUG_OBJECT (decklinksrc, "activatepull");
881
gst_object_unref (decklinksrc);
885
static GstPadLinkReturn
886
gst_decklink_src_video_src_link (GstPad * pad, GstPad * peer)
888
GstDecklinkSrc *decklinksrc;
890
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
892
GST_DEBUG_OBJECT (decklinksrc, "link");
895
gst_object_unref (decklinksrc);
896
return GST_PAD_LINK_OK;
900
gst_decklink_src_video_src_getrange (GstPad * pad, guint64 offset, guint length,
903
GstDecklinkSrc *decklinksrc;
905
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
907
GST_DEBUG_OBJECT (decklinksrc, "getrange");
910
gst_object_unref (decklinksrc);
915
gst_decklink_src_video_src_event (GstPad * pad, GstEvent * event)
918
GstDecklinkSrc *decklinksrc;
920
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
922
GST_DEBUG_OBJECT (decklinksrc, "event");
924
switch (GST_EVENT_TYPE (event)) {
926
res = gst_pad_event_default (pad, event);
930
gst_object_unref (decklinksrc);
935
gst_decklink_src_video_src_query (GstPad * pad, GstQuery * query)
938
GstDecklinkSrc *decklinksrc;
940
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
942
GST_DEBUG_OBJECT (decklinksrc, "query");
944
switch (GST_QUERY_TYPE (query)) {
946
res = gst_pad_query_default (pad, query);
950
gst_object_unref (decklinksrc);
955
gst_decklink_src_video_src_iterintlink (GstPad * pad)
957
GstDecklinkSrc *decklinksrc;
960
decklinksrc = GST_DECKLINK_SRC (gst_pad_get_parent (pad));
962
GST_DEBUG_OBJECT (decklinksrc, "iterintlink");
964
iter = gst_pad_iterate_internal_links_default (pad);
966
gst_object_unref (decklinksrc);
972
video_frame_free (void *data)
974
IDeckLinkVideoInputFrame *video_frame = (IDeckLinkVideoInputFrame *)data;
976
video_frame->Release ();
980
gst_decklink_src_task (void *priv)
982
GstDecklinkSrc *decklinksrc = GST_DECKLINK_SRC (priv);
984
GstBuffer *audio_buffer;
985
IDeckLinkVideoInputFrame *video_frame;
986
IDeckLinkAudioInputPacket *audio_frame;
992
GST_DEBUG_OBJECT (decklinksrc, "task");
994
g_mutex_lock (decklinksrc->mutex);
995
while (decklinksrc->video_frame == NULL && !decklinksrc->stop) {
996
g_cond_wait (decklinksrc->cond, decklinksrc->mutex);
998
video_frame = decklinksrc->video_frame;
999
audio_frame = decklinksrc->audio_frame;
1000
dropped_frames = decklinksrc->dropped_frames;
1001
decklinksrc->video_frame = NULL;
1002
decklinksrc->audio_frame = NULL;
1003
g_mutex_unlock (decklinksrc->mutex);
1005
if (decklinksrc->stop) {
1006
GST_ERROR("stopping task");
1010
if (dropped_frames > 0) {
1011
GST_ELEMENT_ERROR(decklinksrc, RESOURCE, READ, (NULL), (NULL));
1016
video_frame->GetBytes (&data);
1017
if (decklinksrc->copy_data) {
1018
buffer = gst_buffer_new_and_alloc (decklinksrc->width * decklinksrc->height * 2);
1020
memcpy (GST_BUFFER_DATA (buffer), data, decklinksrc->width * decklinksrc->height * 2);
1022
video_frame->Release ();
1024
buffer = gst_buffer_new ();
1025
GST_BUFFER_SIZE (buffer) = decklinksrc->width * decklinksrc->height * 2;
1027
GST_BUFFER_DATA (buffer) = (guint8 *)data;
1029
GST_BUFFER_FREE_FUNC (buffer) = video_frame_free;
1030
GST_BUFFER_MALLOCDATA (buffer) = (guint8 *)video_frame;
1033
GST_BUFFER_TIMESTAMP (buffer) =
1034
gst_util_uint64_scale_int (decklinksrc->num_frames * GST_SECOND,
1035
decklinksrc->fps_d, decklinksrc->fps_n);
1036
GST_BUFFER_DURATION (buffer) =
1037
gst_util_uint64_scale_int ((decklinksrc->num_frames + 1) * GST_SECOND,
1038
decklinksrc->fps_d, decklinksrc->fps_n) -
1039
GST_BUFFER_TIMESTAMP (buffer);
1040
GST_BUFFER_OFFSET (buffer) = decklinksrc->num_frames;
1041
if (decklinksrc->num_frames == 0) {
1042
GST_BUFFER_FLAG_SET(buffer, GST_BUFFER_FLAG_DISCONT);
1044
decklinksrc->num_frames ++;
1046
if (decklinksrc->video_caps == NULL) {
1047
decklinksrc->video_caps = gst_caps_new_simple ("video/x-raw-yuv",
1048
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC('U','Y','V','Y'),
1049
"width", G_TYPE_INT, decklinksrc->width,
1050
"height", G_TYPE_INT, decklinksrc->height,
1051
"framerate", GST_TYPE_FRACTION,
1052
decklinksrc->fps_n, decklinksrc->fps_d,
1053
"interlaced", G_TYPE_BOOLEAN, decklinksrc->interlaced,
1056
gst_buffer_set_caps (buffer, decklinksrc->video_caps);
1058
ret = gst_pad_push (decklinksrc->videosrcpad, buffer);
1059
if (ret != GST_FLOW_OK) {
1060
GST_ELEMENT_ERROR(decklinksrc, CORE, NEGOTIATION, (NULL), (NULL));
1064
n_samples = audio_frame->GetSampleFrameCount();
1065
audio_frame->GetBytes (&data);
1066
audio_buffer = gst_buffer_new_and_alloc (n_samples * 2 * 2);
1067
memcpy (GST_BUFFER_DATA (audio_buffer), data, n_samples * 2 * 2);
1068
audio_frame->Release ();
1070
GST_BUFFER_TIMESTAMP (audio_buffer) =
1071
gst_util_uint64_scale_int (decklinksrc->num_audio_samples * GST_SECOND,
1073
GST_BUFFER_DURATION (audio_buffer) =
1074
gst_util_uint64_scale_int ((decklinksrc->num_audio_samples + n_samples) * GST_SECOND,
1075
1, 48000) - GST_BUFFER_TIMESTAMP (audio_buffer);
1076
decklinksrc->num_audio_samples += n_samples;
1078
if (decklinksrc->audio_caps == NULL) {
1079
decklinksrc->audio_caps = gst_caps_new_simple ("audio/x-raw-int",
1080
"endianness", G_TYPE_INT, G_LITTLE_ENDIAN,
1081
"signed", G_TYPE_BOOLEAN, TRUE,
1082
"depth", G_TYPE_INT, 16,
1083
"width", G_TYPE_INT, 16,
1084
"channels", G_TYPE_INT, 2,
1085
"rate", G_TYPE_INT, 48000,
1088
gst_buffer_set_caps (audio_buffer, decklinksrc->audio_caps);
1090
ret = gst_pad_push (decklinksrc->audiosrcpad, audio_buffer);
1091
if (ret != GST_FLOW_OK) {
1092
GST_ELEMENT_ERROR(decklinksrc, CORE, NEGOTIATION, (NULL), (NULL));