/* GStreamer * Copyright (C) 2011 David Schleef * Copyright (C) 2014 Sebastian Dröge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin Street, Suite 500, * Boston, MA 02110-1335, USA. */ /** * SECTION:element-decklinkvideosink * @short_description: Outputs Video to a BlackMagic DeckLink Device * * Playout Video to a BlackMagic DeckLink Device. * * ## Sample pipeline * |[ * gst-launch-1.0 \ * videotestsrc ! \ * decklinkvideosink device-number=0 mode=1080p25 * ]| * Playout a 1080p25 test-video to the SDI-Out of Card 0. Devices are numbered * starting with 0. * * # Duplex-Mode: * Certain DechLink Cards like the Duo2 or the Quad2 contain two or four * independent SDI units with two connectors each. These units can operate either * in half- or in full-duplex mode. * * The Duplex-Mode of a Card can be configured using the `duplex-mode`-Property. * Cards that to not support Duplex-Modes are not influenced by the property. * * ## Half-Duplex-Mode (default): * By default decklinkvideosink will configure them into half-duplex mode, so that * each connector acts as if it were an independent DeckLink Card which can either * be used as an Input or as an Output. In this mode the Duo2 can be used as as 4 SDI * In-/Outputs and the Quad2 as 8 SDI In-/Outputs. * * |[ * gst-launch-1.0 \ * videotestsrc foreground-color=0x00ff0000 ! decklinkvideosink device-number=0 mode=1080p25 \ * videotestsrc foreground-color=0x0000ff00 ! decklinkvideosink device-number=1 mode=1080p25 \ * videotestsrc foreground-color=0x000000ff ! decklinkvideosink device-number=2 mode=1080p25 \ * videotestsrc foreground-color=0x00ffffff ! decklinkvideosink device-number=3 mode=1080p25 * ]| * Playout four Test-Screen with colored Snow on the first four units in the System * (ie. the Connectors 1-4 of a Duo2 unit). * * |[ * gst-launch-1.0 \ * videotestsrc is-live=true foreground-color=0x0000ff00 ! decklinkvideosink device-number=0 mode=1080p25 \ * decklinkvideosrc device-number=1 mode=1080p25 ! autovideosink \ * decklinkvideosrc device-number=2 mode=1080p25 ! autovideosink \ * videotestsrc is-live=true foreground-color=0x00ff0000 ! decklinkvideosink device-number=3 mode=1080p25 * ]| * Capture 1080p25 from the second and third unit in the System, * Playout a Test-Screen with colored Snow on the first and fourth unit * (ie. the Connectors 1-4 of a Duo2 unit). * * ## Device-Number-Mapping in Half-Duplex-Mode * The device-number to connector-mapping is as follows for the Duo2 * - `device-number=0` SDI1 * - `device-number=1` SDI3 * - `device-number=2` SDI2 * - `device-number=3` SDI4 * * And for the Quad2 * - `device-number=0` SDI1 * - `device-number=1` SDI3 * - `device-number=2` SDI5 * - `device-number=3` SDI7 * - `device-number=4` SDI2 * - `device-number=5` SDI4 * - `device-number=6` SDI6 * - `device-number=7` SDI8 * * ## Full-Duplex-Mode: * When operating in full-duplex mode, two connectors of a unit are combined to * a single device, performing keying with the second connection. * * ## Device-Number-Mapping in Full-Duplex-Mode * The device-number to connector-mapping in full-duplex-mode is as follows for the Duo2 * - `device-number=0` SDI1 primary, SDI2 secondary * - `device-number=1` SDI3 primaty, SDI4 secondary * * And for the Quad2 * - `device-number=0` SDI1 primary, SDI2 secondary * - `device-number=1` SDI3 primaty, SDI4 secondary * - `device-number=2` SDI5 primary, SDI6 secondary * - `device-number=3` SDI7 primary, SDI8 secondary * * # Keying * Keying is the process of overlaing Video with an Alpha-Channel on top of an * existing Video-Stream. The Duo2 and Quad2-Cards can perform two different * Keying-Modes when operated in full-duplex mode. Both modes expect Video with * an Alpha-Channel. * * ## Internal Keyer: * In internal Keying-Mode the primary port becomes an Input and the secondary port * an Output. The unit overlays Video played back from the Computer onto the Input * and outputs the combined Video-Stream to the Output. * * |[ * gst-launch-1.0 \ * videotestsrc foreground-color=0x00000000 background-color=0x00000000 ! \ * video/x-raw,format=BGRA,width=1920,height=1080 ! \ * decklinkvideosink device-number=0 duplex-mode=full keyer-mode=internal video-format=8bit-bgra mode=1080p25 * ]| * * ## External Keyer: * In external Keying-Mode the primary port outputs the alpha-chanel as the * luma-value (key-channel). Transparent pixels are black, opaque pixels are white. * The RGB-Component of the Video are output on the secondary channel. * * |[ * gst-launch-1.0 \ * videotestsrc foreground-color=0x00000000 background-color=0x00000000 ! \ * video/x-raw,format=BGRA,width=1920,height=1080 ! \ * decklinkvideosink device-number=0 duplex-mode=full keyer-mode=external video-format=8bit-bgra mode=1080p25 * ]| */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstdecklinkvideosink.h" #include GST_DEBUG_CATEGORY_STATIC (gst_decklink_video_sink_debug); #define GST_CAT_DEFAULT gst_decklink_video_sink_debug #define DEFAULT_PERSISTENT_ID (-1) class GStreamerVideoOutputCallback:public IDeckLinkVideoOutputCallback { public: GStreamerVideoOutputCallback (GstDecklinkVideoSink * sink) :IDeckLinkVideoOutputCallback (), m_refcount (1) { m_sink = GST_DECKLINK_VIDEO_SINK_CAST (gst_object_ref (sink)); g_mutex_init (&m_mutex); } virtual HRESULT WINAPI QueryInterface (REFIID, LPVOID *) { return E_NOINTERFACE; } virtual ULONG WINAPI AddRef (void) { ULONG ret; g_mutex_lock (&m_mutex); m_refcount++; ret = m_refcount; g_mutex_unlock (&m_mutex); return ret; } virtual ULONG WINAPI Release (void) { ULONG ret; g_mutex_lock (&m_mutex); m_refcount--; ret = m_refcount; g_mutex_unlock (&m_mutex); if (ret == 0) { delete this; } return ret; } virtual HRESULT WINAPI ScheduledFrameCompleted (IDeckLinkVideoFrame * completedFrame, BMDOutputFrameCompletionResult result) { switch (result) { case bmdOutputFrameCompleted: GST_LOG_OBJECT (m_sink, "Completed frame %p", completedFrame); break; case bmdOutputFrameDisplayedLate: GST_INFO_OBJECT (m_sink, "Late Frame %p", completedFrame); break; case bmdOutputFrameDropped: GST_INFO_OBJECT (m_sink, "Dropped Frame %p", completedFrame); break; case bmdOutputFrameFlushed: GST_DEBUG_OBJECT (m_sink, "Flushed Frame %p", completedFrame); break; default: GST_INFO_OBJECT (m_sink, "Unknown Frame %p: %d", completedFrame, (gint) result); break; } return S_OK; } virtual HRESULT WINAPI ScheduledPlaybackHasStopped (void) { GST_LOG_OBJECT (m_sink, "Scheduled playback stopped"); if (m_sink->output) { g_mutex_lock (&m_sink->output->lock); g_cond_signal (&m_sink->output->cond); g_mutex_unlock (&m_sink->output->lock); } return S_OK; } virtual ~ GStreamerVideoOutputCallback () { gst_object_unref (m_sink); g_mutex_clear (&m_mutex); } private: GstDecklinkVideoSink * m_sink; GMutex m_mutex; gint m_refcount; }; class GstDecklinkTimecode:public IDeckLinkTimecode { public: GstDecklinkTimecode (GstVideoTimeCode * timecode):m_timecode (gst_video_time_code_copy (timecode)), m_refcount (1) { } virtual BMDTimecodeBCD STDMETHODCALLTYPE GetBCD (void) { BMDTimecodeBCD bcd = 0; bcd |= (m_timecode->frames % 10) << 0; bcd |= ((m_timecode->frames / 10) & 0x0f) << 4; bcd |= (m_timecode->seconds % 10) << 8; bcd |= ((m_timecode->seconds / 10) & 0x0f) << 12; bcd |= (m_timecode->minutes % 10) << 16; bcd |= ((m_timecode->minutes / 10) & 0x0f) << 20; bcd |= (m_timecode->hours % 10) << 24; bcd |= ((m_timecode->hours / 10) & 0x0f) << 28; if (m_timecode->config.fps_n == 24 && m_timecode->config.fps_d == 1) bcd |= 0x0 << 30; else if (m_timecode->config.fps_n == 25 && m_timecode->config.fps_d == 1) bcd |= 0x1 << 30; else if (m_timecode->config.fps_n == 30 && m_timecode->config.fps_d == 1001) bcd |= 0x2 << 30; else if (m_timecode->config.fps_n == 30 && m_timecode->config.fps_d == 1) bcd |= 0x3 << 30; return bcd; } virtual HRESULT STDMETHODCALLTYPE GetComponents (uint8_t * hours, uint8_t * minutes, uint8_t * seconds, uint8_t * frames) { *hours = m_timecode->hours; *minutes = m_timecode->minutes; *seconds = m_timecode->seconds; *frames = m_timecode->frames; return S_OK; } virtual HRESULT STDMETHODCALLTYPE GetString (COMSTR_T * timecode) { COMSTR_T s = (COMSTR_T) gst_video_time_code_to_string (m_timecode); CONVERT_TO_COM_STRING (s); *timecode = s; return S_OK; } virtual BMDTimecodeFlags STDMETHODCALLTYPE GetFlags (void) { BMDTimecodeFlags flags = (BMDTimecodeFlags) 0; if (((GstVideoTimeCodeFlags) (m_timecode-> config.flags)) & GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME) flags = (BMDTimecodeFlags) (flags | bmdTimecodeIsDropFrame); else flags = (BMDTimecodeFlags) (flags | bmdTimecodeFlagDefault); if (m_timecode->field_count == 2) flags = (BMDTimecodeFlags) (flags | bmdTimecodeFieldMark); return flags; } virtual HRESULT STDMETHODCALLTYPE GetTimecodeUserBits (BMDTimecodeUserBits * userBits) { *userBits = 0; return S_OK; } virtual HRESULT STDMETHODCALLTYPE QueryInterface (REFIID, LPVOID *) { return E_NOINTERFACE; } virtual ULONG STDMETHODCALLTYPE AddRef (void) { ULONG ret; ret = g_atomic_int_add (&m_refcount, 1) + 1; return ret; } virtual ULONG STDMETHODCALLTYPE Release (void) { ULONG ret; ret = g_atomic_int_add (&m_refcount, -1); if (ret == 1) { delete this; } return ret - 1; } private: GstVideoTimeCode * m_timecode; int m_refcount; virtual ~ GstDecklinkTimecode () { if (m_timecode) { gst_video_time_code_free (m_timecode); } } }; class GstDecklinkVideoFrame:public IDeckLinkVideoFrame { public: GstDecklinkVideoFrame (GstVideoFrame * frame):m_frame (0), m_dframe (0), m_ancillary (0), m_timecode (0), m_refcount (1) { m_frame = g_new0 (GstVideoFrame, 1); *m_frame = *frame; } GstDecklinkVideoFrame (IDeckLinkMutableVideoFrame * dframe):m_frame (0), m_dframe (dframe), m_ancillary (0), m_timecode (0), m_refcount (1) { } virtual long STDMETHODCALLTYPE GetWidth (void) { return m_frame ? GST_VIDEO_FRAME_WIDTH (m_frame) : m_dframe->GetWidth (); } virtual long STDMETHODCALLTYPE GetHeight (void) { return m_frame ? GST_VIDEO_FRAME_HEIGHT (m_frame) : m_dframe->GetHeight (); } virtual long STDMETHODCALLTYPE GetRowBytes (void) { return m_frame ? GST_VIDEO_FRAME_PLANE_STRIDE (m_frame, 0) : m_dframe->GetRowBytes (); } virtual BMDPixelFormat STDMETHODCALLTYPE GetPixelFormat (void) { if (m_dframe) return m_dframe->GetPixelFormat (); switch (GST_VIDEO_FRAME_FORMAT (m_frame)) { case GST_VIDEO_FORMAT_UYVY: return bmdFormat8BitYUV; case GST_VIDEO_FORMAT_v210: return bmdFormat10BitYUV; case GST_VIDEO_FORMAT_ARGB: return bmdFormat8BitARGB; case GST_VIDEO_FORMAT_BGRA: return bmdFormat8BitBGRA; case GST_VIDEO_FORMAT_r210: return bmdFormat10BitRGB; default: g_assert_not_reached (); } } virtual BMDFrameFlags STDMETHODCALLTYPE GetFlags (void) { return m_dframe ? m_dframe->GetFlags () : bmdFrameFlagDefault; } virtual HRESULT STDMETHODCALLTYPE GetBytes (void **buffer) { if (m_dframe) return m_dframe->GetBytes (buffer); *buffer = GST_VIDEO_FRAME_PLANE_DATA (m_frame, 0); return S_OK; } virtual HRESULT STDMETHODCALLTYPE GetTimecode (BMDTimecodeFormat format, IDeckLinkTimecode ** timecode) { *timecode = m_timecode; if (m_timecode) { m_timecode->AddRef (); return S_OK; } else { return S_FALSE; } } virtual HRESULT STDMETHODCALLTYPE SetTimecode (GstVideoTimeCode * timecode) { if (m_timecode) { m_timecode->Release (); } m_timecode = new GstDecklinkTimecode (timecode); return S_OK; } virtual HRESULT STDMETHODCALLTYPE GetAncillaryData (IDeckLinkVideoFrameAncillary ** ancillary) { *ancillary = m_ancillary; if (m_ancillary) { m_ancillary->AddRef (); return S_OK; } else { return S_FALSE; } } virtual HRESULT STDMETHODCALLTYPE SetAncillaryData (IDeckLinkVideoFrameAncillary * ancillary) { if (m_ancillary) m_ancillary->Release (); if (ancillary) ancillary->AddRef (); m_ancillary = ancillary; return S_OK; } virtual HRESULT STDMETHODCALLTYPE QueryInterface (REFIID, LPVOID *) { return E_NOINTERFACE; } virtual ULONG STDMETHODCALLTYPE AddRef (void) { ULONG ret; ret = g_atomic_int_add (&m_refcount, 1) + 1; return ret; } virtual ULONG STDMETHODCALLTYPE Release (void) { ULONG ret; ret = g_atomic_int_add (&m_refcount, -1); if (ret == 1) { delete this; } return ret - 1; } private: GstVideoFrame * m_frame; IDeckLinkMutableVideoFrame *m_dframe; IDeckLinkVideoFrameAncillary *m_ancillary; GstDecklinkTimecode *m_timecode; int m_refcount; virtual ~ GstDecklinkVideoFrame () { if (m_frame) { gst_video_frame_unmap (m_frame); g_free (m_frame); } if (m_dframe) { m_dframe->Release (); } if (m_ancillary) { m_ancillary->Release (); } if (m_timecode) { m_timecode->Release (); } } }; /** * GstDecklinkMappingFormat: * @GST_DECKLINK_MAPPING_FORMAT_DEFAULT: Don't change the mapping format * @GST_DECKLINK_MAPPING_FORMAT_LEVEL_A: Level A * @GST_DECKLINK_MAPPING_FORMAT_LEVEL_B: Level B * * Since: 1.22 */ enum { PROP_0, PROP_MODE, PROP_DEVICE_NUMBER, PROP_VIDEO_FORMAT, PROP_PROFILE_ID, PROP_TIMECODE_FORMAT, PROP_KEYER_MODE, PROP_KEYER_LEVEL, PROP_HW_SERIAL_NUMBER, PROP_CC_LINE, PROP_AFD_BAR_LINE, PROP_MAPPING_FORMAT, PROP_PERSISTENT_ID }; static void gst_decklink_video_sink_set_property (GObject * object, guint property_id, const GValue * value, GParamSpec * pspec); static void gst_decklink_video_sink_get_property (GObject * object, guint property_id, GValue * value, GParamSpec * pspec); static void gst_decklink_video_sink_finalize (GObject * object); static GstStateChangeReturn gst_decklink_video_sink_change_state (GstElement * element, GstStateChange transition); static GstClock *gst_decklink_video_sink_provide_clock (GstElement * element); static GstCaps *gst_decklink_video_sink_get_caps (GstBaseSink * bsink, GstCaps * filter); static gboolean gst_decklink_video_sink_set_caps (GstBaseSink * bsink, GstCaps * caps); static GstFlowReturn gst_decklink_video_sink_prepare (GstBaseSink * bsink, GstBuffer * buffer); static GstFlowReturn gst_decklink_video_sink_render (GstBaseSink * bsink, GstBuffer * buffer); static gboolean gst_decklink_video_sink_open (GstBaseSink * bsink); static gboolean gst_decklink_video_sink_close (GstBaseSink * bsink); static gboolean gst_decklink_video_sink_stop (GstDecklinkVideoSink * self); static gboolean gst_decklink_video_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query); static gboolean gst_decklink_video_sink_event (GstBaseSink * bsink, GstEvent * event); static void gst_decklink_video_sink_start_scheduled_playback (GstElement * element); #define parent_class gst_decklink_video_sink_parent_class G_DEFINE_TYPE (GstDecklinkVideoSink, gst_decklink_video_sink, GST_TYPE_BASE_SINK); GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (decklinkvideosink, "decklinkvideosink", GST_RANK_NONE, GST_TYPE_DECKLINK_VIDEO_SINK, decklink_element_init (plugin)); static gboolean reset_framerate (GstCapsFeatures * features, GstStructure * structure, gpointer user_data) { gst_structure_set (structure, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); return TRUE; } static void gst_decklink_video_sink_class_init (GstDecklinkVideoSinkClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GstBaseSinkClass *basesink_class = GST_BASE_SINK_CLASS (klass); GstCaps *templ_caps; gobject_class->set_property = gst_decklink_video_sink_set_property; gobject_class->get_property = gst_decklink_video_sink_get_property; gobject_class->finalize = gst_decklink_video_sink_finalize; element_class->change_state = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_change_state); element_class->provide_clock = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_provide_clock); basesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_get_caps); basesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_set_caps); basesink_class->prepare = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_prepare); basesink_class->render = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_render); // FIXME: These are misnamed in basesink! basesink_class->start = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_open); basesink_class->stop = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_close); basesink_class->propose_allocation = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_propose_allocation); basesink_class->event = GST_DEBUG_FUNCPTR (gst_decklink_video_sink_event); g_object_class_install_property (gobject_class, PROP_MODE, g_param_spec_enum ("mode", "Playback Mode", "Video Mode to use for playback", GST_TYPE_DECKLINK_MODE, GST_DECKLINK_MODE_NTSC, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); g_object_class_install_property (gobject_class, PROP_DEVICE_NUMBER, g_param_spec_int ("device-number", "Device number", "Output device instance to use", 0, G_MAXINT, 0, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); /** * GstDecklinkVideoSink:persistent-id * * Decklink device to use. Higher priority than "device-number". * BMDDeckLinkPersistentID is a device specific, 32-bit unique identifier. * It is stable even when the device is plugged in a different connector, * across reboots, and when plugged into different computers. * * Since: 1.22 */ g_object_class_install_property (gobject_class, PROP_PERSISTENT_ID, g_param_spec_int64 ("persistent-id", "Persistent id", "Output device instance to use. Higher priority than \"device-number\".", DEFAULT_PERSISTENT_ID, G_MAXINT64, DEFAULT_PERSISTENT_ID, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); g_object_class_install_property (gobject_class, PROP_VIDEO_FORMAT, g_param_spec_enum ("video-format", "Video format", "Video format type to use for playback", GST_TYPE_DECKLINK_VIDEO_FORMAT, GST_DECKLINK_VIDEO_FORMAT_8BIT_YUV, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); /** * GstDecklinkVideoSink:profile * * Specifies decklink profile to use. * * Since: 1.20 */ g_object_class_install_property (gobject_class, PROP_PROFILE_ID, g_param_spec_enum ("profile", "Profile", "Certain DeckLink devices such as the DeckLink 8K Pro, the DeckLink " "Quad 2 and the DeckLink Duo 2 support multiple profiles to " "configure the capture and playback behavior of its sub-devices." "For the DeckLink Duo 2 and DeckLink Quad 2, a profile is shared " "between any 2 sub-devices that utilize the same connectors. For the " "DeckLink 8K Pro, a profile is shared between all 4 sub-devices. Any " "sub-devices that share a profile are considered to be part of the " "same profile group." "DeckLink Duo 2 support configuration of the duplex mode of " "individual sub-devices.", GST_TYPE_DECKLINK_PROFILE_ID, GST_DECKLINK_PROFILE_ID_DEFAULT, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); g_object_class_install_property (gobject_class, PROP_TIMECODE_FORMAT, g_param_spec_enum ("timecode-format", "Timecode format", "Timecode format type to use for playback", GST_TYPE_DECKLINK_TIMECODE_FORMAT, GST_DECKLINK_TIMECODE_FORMAT_RP188ANY, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); g_object_class_install_property (gobject_class, PROP_KEYER_MODE, g_param_spec_enum ("keyer-mode", "Keyer mode", "Keyer mode to be enabled", GST_TYPE_DECKLINK_KEYER_MODE, GST_DECKLINK_KEYER_MODE_OFF, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); g_object_class_install_property (gobject_class, PROP_KEYER_LEVEL, g_param_spec_int ("keyer-level", "Keyer level", "Keyer level", 0, 255, 255, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); g_object_class_install_property (gobject_class, PROP_HW_SERIAL_NUMBER, g_param_spec_string ("hw-serial-number", "Hardware serial number", "The serial number (hardware ID) of the Decklink card", NULL, (GParamFlags) (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (gobject_class, PROP_CC_LINE, g_param_spec_int ("cc-line", "CC Line", "Line number to use for inserting closed captions (0 = disabled)", 0, 22, 0, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); g_object_class_install_property (gobject_class, PROP_AFD_BAR_LINE, g_param_spec_int ("afd-bar-line", "AFD/Bar Line", "Line number to use for inserting AFD/Bar data (0 = disabled)", 0, 10000, 0, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); /** * GstDecklinkVideoSink:mapping-format * * Specifies the 3G-SDI mapping format to use (SMPTE ST 425-1:2017). * * Since: 1.22 */ g_object_class_install_property (gobject_class, PROP_MAPPING_FORMAT, g_param_spec_enum ("mapping-format", "3G-SDI Mapping Format", "3G-SDI Mapping Format (Level A/B)", GST_TYPE_DECKLINK_MAPPING_FORMAT, GST_DECKLINK_MAPPING_FORMAT_DEFAULT, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT))); templ_caps = gst_decklink_mode_get_template_caps (FALSE); templ_caps = gst_caps_make_writable (templ_caps); /* For output we support any framerate and only really care about timestamps */ gst_caps_map_in_place (templ_caps, reset_framerate, NULL); gst_element_class_add_pad_template (element_class, gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, templ_caps)); gst_caps_unref (templ_caps); gst_element_class_set_static_metadata (element_class, "Decklink Video Sink", "Video/Sink/Hardware", "Decklink Sink", "David Schleef , " "Sebastian Dröge "); GST_DEBUG_CATEGORY_INIT (gst_decklink_video_sink_debug, "decklinkvideosink", 0, "debug category for decklinkvideosink element"); gst_type_mark_as_plugin_api (GST_TYPE_DECKLINK_MAPPING_FORMAT, (GstPluginAPIFlags) 0); } static void gst_decklink_video_sink_init (GstDecklinkVideoSink * self) { self->mode = GST_DECKLINK_MODE_NTSC; self->device_number = 0; self->persistent_id = DEFAULT_PERSISTENT_ID; self->video_format = GST_DECKLINK_VIDEO_FORMAT_8BIT_YUV; self->profile_id = GST_DECKLINK_PROFILE_ID_DEFAULT; /* VITC is legacy, we should expect RP188 in modern use cases */ self->timecode_format = bmdTimecodeRP188Any; self->caption_line = 0; self->afd_bar_line = 0; self->mapping_format = GST_DECKLINK_MAPPING_FORMAT_DEFAULT; gst_base_sink_set_max_lateness (GST_BASE_SINK_CAST (self), 20 * GST_MSECOND); gst_base_sink_set_qos_enabled (GST_BASE_SINK_CAST (self), TRUE); } void gst_decklink_video_sink_set_property (GObject * object, guint property_id, const GValue * value, GParamSpec * pspec) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (object); switch (property_id) { case PROP_MODE: self->mode = (GstDecklinkModeEnum) g_value_get_enum (value); break; case PROP_DEVICE_NUMBER: self->device_number = g_value_get_int (value); break; case PROP_VIDEO_FORMAT: self->video_format = (GstDecklinkVideoFormat) g_value_get_enum (value); switch (self->video_format) { case GST_DECKLINK_VIDEO_FORMAT_AUTO: case GST_DECKLINK_VIDEO_FORMAT_8BIT_YUV: case GST_DECKLINK_VIDEO_FORMAT_10BIT_YUV: case GST_DECKLINK_VIDEO_FORMAT_8BIT_ARGB: case GST_DECKLINK_VIDEO_FORMAT_8BIT_BGRA: case GST_DECKLINK_VIDEO_FORMAT_10BIT_RGB: break; default: GST_ELEMENT_WARNING (GST_ELEMENT (self), CORE, NOT_IMPLEMENTED, ("Format %d not supported", self->video_format), (NULL)); break; } break; case PROP_PROFILE_ID: self->profile_id = (GstDecklinkProfileId) g_value_get_enum (value); break; case PROP_TIMECODE_FORMAT: self->timecode_format = gst_decklink_timecode_format_from_enum ((GstDecklinkTimecodeFormat) g_value_get_enum (value)); break; case PROP_KEYER_MODE: self->keyer_mode = gst_decklink_keyer_mode_from_enum ((GstDecklinkKeyerMode) g_value_get_enum (value)); break; case PROP_KEYER_LEVEL: self->keyer_level = g_value_get_int (value); break; case PROP_CC_LINE: self->caption_line = g_value_get_int (value); break; case PROP_AFD_BAR_LINE: self->afd_bar_line = g_value_get_int (value); break; case PROP_MAPPING_FORMAT: self->mapping_format = (GstDecklinkMappingFormat) g_value_get_enum (value); break; case PROP_PERSISTENT_ID: self->persistent_id = g_value_get_int64 (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } void gst_decklink_video_sink_get_property (GObject * object, guint property_id, GValue * value, GParamSpec * pspec) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (object); switch (property_id) { case PROP_MODE: g_value_set_enum (value, self->mode); break; case PROP_DEVICE_NUMBER: g_value_set_int (value, self->device_number); break; case PROP_VIDEO_FORMAT: g_value_set_enum (value, self->video_format); break; case PROP_PROFILE_ID: g_value_set_enum (value, self->profile_id); break; case PROP_TIMECODE_FORMAT: g_value_set_enum (value, gst_decklink_timecode_format_to_enum (self->timecode_format)); break; case PROP_KEYER_MODE: g_value_set_enum (value, gst_decklink_keyer_mode_to_enum (self->keyer_mode)); break; case PROP_KEYER_LEVEL: g_value_set_int (value, self->keyer_level); break; case PROP_HW_SERIAL_NUMBER: if (self->output) g_value_set_string (value, self->output->hw_serial_number); else g_value_set_string (value, NULL); break; case PROP_CC_LINE: g_value_set_int (value, self->caption_line); break; case PROP_AFD_BAR_LINE: g_value_set_int (value, self->afd_bar_line); break; case PROP_MAPPING_FORMAT: g_value_set_enum (value, self->mapping_format); break; case PROP_PERSISTENT_ID: g_value_set_int64 (value, self->persistent_id); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } void gst_decklink_video_sink_finalize (GObject * object) { //GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (object); G_OBJECT_CLASS (parent_class)->finalize (object); } static gboolean gst_decklink_video_sink_set_caps (GstBaseSink * bsink, GstCaps * caps) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink); const GstDecklinkMode *mode; HRESULT ret; BMDVideoOutputFlags flags; GstVideoInfo info; GST_DEBUG_OBJECT (self, "Setting caps %" GST_PTR_FORMAT, caps); if (!gst_video_info_from_caps (&info, caps)) return FALSE; g_mutex_lock (&self->output->lock); if (self->output->video_enabled) { if (self->info.finfo->format == info.finfo->format && self->info.width == info.width && self->info.height == info.height) { // FIXME: We should also consider the framerate as it is used // for mode selection below in auto mode GST_DEBUG_OBJECT (self, "Nothing relevant has changed"); self->info = info; g_mutex_unlock (&self->output->lock); return TRUE; } else { GST_DEBUG_OBJECT (self, "Reconfiguration not supported at this point"); g_mutex_unlock (&self->output->lock); return FALSE; } } g_mutex_unlock (&self->output->lock); self->output->output->SetScheduledFrameCompletionCallback (new GStreamerVideoOutputCallback (self)); if (self->mode == GST_DECKLINK_MODE_AUTO) { BMDPixelFormat f; mode = gst_decklink_find_mode_and_format_for_caps (caps, &f); if (mode == NULL) { GST_WARNING_OBJECT (self, "Failed to find compatible mode for caps %" GST_PTR_FORMAT, caps); return FALSE; } if (self->video_format != GST_DECKLINK_VIDEO_FORMAT_AUTO && gst_decklink_pixel_format_from_type (self->video_format) != f) { GST_WARNING_OBJECT (self, "Failed to set pixel format to %d", self->video_format); return FALSE; } } else { /* We don't have to give the format in EnableVideoOutput. Therefore, * even if it's AUTO, we have it stored in self->info and set it in * gst_decklink_video_sink_prepare */ mode = gst_decklink_get_mode (self->mode); g_assert (mode != NULL); }; /* enable or disable keyer */ if (self->output->keyer != NULL) { if (self->keyer_mode == bmdKeyerModeOff) { self->output->keyer->Disable (); } else if (self->keyer_mode == bmdKeyerModeInternal) { self->output->keyer->Enable (false); self->output->keyer->SetLevel (self->keyer_level); } else if (self->keyer_mode == bmdKeyerModeExternal) { self->output->keyer->Enable (true); self->output->keyer->SetLevel (self->keyer_level); } else { g_assert_not_reached (); } } else if (self->keyer_mode != bmdKeyerModeOff) { GST_WARNING_OBJECT (self, "Failed to set keyer to mode %d", self->keyer_mode); } /* The timecode_format itself is used when we embed the actual timecode data * into the frame. Now we only need to know which of the two standards the * timecode format will adhere to: VITC or RP188, and send the appropriate * flag to EnableVideoOutput. The exact format is specified later. * * Note that this flag will have no effect in practice if the video stream * does not contain timecode metadata. */ if ((gint64) self->timecode_format == (gint64) GST_DECKLINK_TIMECODE_FORMAT_VITC || (gint64) self->timecode_format == (gint64) GST_DECKLINK_TIMECODE_FORMAT_VITCFIELD2) flags = bmdVideoOutputVITC; else flags = bmdVideoOutputRP188; if (self->caption_line > 0 || self->afd_bar_line > 0) flags = (BMDVideoOutputFlags) (flags | bmdVideoOutputVANC); ret = self->output->output->EnableVideoOutput (mode->mode, flags); if (ret != S_OK) { GST_WARNING_OBJECT (self, "Failed to enable video output: 0x%08lx", (unsigned long) ret); return FALSE; } self->info = info; g_mutex_lock (&self->output->lock); self->output->mode = mode; self->output->video_enabled = TRUE; if (self->output->start_scheduled_playback) self->output->start_scheduled_playback (self->output->videosink); g_mutex_unlock (&self->output->lock); if (self->vbiencoder) { gst_video_vbi_encoder_free (self->vbiencoder); self->vbiencoder = NULL; self->anc_vformat = GST_VIDEO_FORMAT_UNKNOWN; } return TRUE; } static GstCaps * gst_decklink_video_sink_get_caps (GstBaseSink * bsink, GstCaps * filter) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink); GstCaps *mode_caps, *caps; if (self->mode == GST_DECKLINK_MODE_AUTO && self->video_format == GST_DECKLINK_VIDEO_FORMAT_AUTO) mode_caps = gst_decklink_mode_get_template_caps (FALSE); else if (self->video_format == GST_DECKLINK_VIDEO_FORMAT_AUTO) mode_caps = gst_decklink_mode_get_caps_all_formats (self->mode, FALSE); else if (self->mode == GST_DECKLINK_MODE_AUTO) mode_caps = gst_decklink_pixel_format_get_caps (gst_decklink_pixel_format_from_type (self->video_format), FALSE); else mode_caps = gst_decklink_mode_get_caps (self->mode, gst_decklink_pixel_format_from_type (self->video_format), FALSE); mode_caps = gst_caps_make_writable (mode_caps); /* For output we support any framerate and only really care about timestamps */ gst_caps_map_in_place (mode_caps, reset_framerate, NULL); if (filter) { caps = gst_caps_intersect_full (filter, mode_caps, GST_CAPS_INTERSECT_FIRST); gst_caps_unref (mode_caps); } else { caps = mode_caps; } return caps; } static GstFlowReturn gst_decklink_video_sink_render (GstBaseSink * bsink, GstBuffer * buffer) { return GST_FLOW_OK; } void gst_decklink_video_sink_convert_to_internal_clock (GstDecklinkVideoSink * self, GstClockTime * timestamp, GstClockTime * duration) { GstClock *clock; GstClockTime internal_base, external_base, internal_offset; g_assert (timestamp != NULL); clock = gst_element_get_clock (GST_ELEMENT_CAST (self)); GST_OBJECT_LOCK (self); internal_base = self->internal_base_time; external_base = self->external_base_time; internal_offset = self->internal_time_offset; GST_OBJECT_UNLOCK (self); if (!clock || clock != self->output->clock) { GstClockTime internal, external, rate_n, rate_d; GstClockTime external_timestamp = *timestamp; GstClockTime base_time; gst_clock_get_calibration (self->output->clock, &internal, &external, &rate_n, &rate_d); // Convert to the running time corresponding to both clock times if (!GST_CLOCK_TIME_IS_VALID (internal_base) || internal < internal_base) internal = 0; else internal -= internal_base; if (!GST_CLOCK_TIME_IS_VALID (external_base) || external < external_base) external = 0; else external -= external_base; // Convert timestamp to the "running time" since we started scheduled // playback, that is the difference between the pipeline's base time // and our own base time. base_time = gst_element_get_base_time (GST_ELEMENT_CAST (self)); if (base_time > external_base) base_time = 0; else base_time = external_base - base_time; if (external_timestamp < base_time) external_timestamp = 0; else external_timestamp = external_timestamp - base_time; // Get the difference in the external time, note // that the running time is external time. // Then scale this difference and offset it to // our internal time. Now we have the running time // according to our internal clock. // // For the duration we just scale *timestamp = gst_clock_unadjust_with_calibration (NULL, external_timestamp, internal, external, rate_n, rate_d); GST_LOG_OBJECT (self, "Converted %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT " (internal: %" GST_TIME_FORMAT " external %" GST_TIME_FORMAT " rate: %lf)", GST_TIME_ARGS (external_timestamp), GST_TIME_ARGS (*timestamp), GST_TIME_ARGS (internal), GST_TIME_ARGS (external), ((gdouble) rate_n) / ((gdouble) rate_d)); if (duration) { GstClockTime external_duration = *duration; *duration = gst_util_uint64_scale (external_duration, rate_d, rate_n); GST_LOG_OBJECT (self, "Converted duration %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT " (internal: %" GST_TIME_FORMAT " external %" GST_TIME_FORMAT " rate: %lf)", GST_TIME_ARGS (external_duration), GST_TIME_ARGS (*duration), GST_TIME_ARGS (internal), GST_TIME_ARGS (external), ((gdouble) rate_n) / ((gdouble) rate_d)); } } else { GST_LOG_OBJECT (self, "No clock conversion needed, same clocks: %" GST_TIME_FORMAT, GST_TIME_ARGS (*timestamp)); } if (external_base != GST_CLOCK_TIME_NONE && internal_base != GST_CLOCK_TIME_NONE) *timestamp += internal_offset; else *timestamp = gst_clock_get_internal_time (self->output->clock); GST_DEBUG_OBJECT (self, "Output timestamp %" GST_TIME_FORMAT " using clock epoch %" GST_TIME_FORMAT, GST_TIME_ARGS (*timestamp), GST_TIME_ARGS (self->output->clock_epoch)); if (clock) gst_object_unref (clock); } /* Copied from ext/closedcaption/gstccconverter.c */ /* Converts raw CEA708 cc_data and an optional timecode into CDP */ static guint convert_cea708_cc_data_cea708_cdp_internal (GstDecklinkVideoSink * self, const guint8 * cc_data, guint cc_data_len, guint8 * cdp, guint cdp_len, const GstVideoTimeCodeMeta * tc_meta) { GstByteWriter bw; guint8 flags, checksum; guint i, len; const GstDecklinkMode *mode = gst_decklink_get_mode (self->mode); gst_byte_writer_init_with_data (&bw, cdp, cdp_len, FALSE); gst_byte_writer_put_uint16_be_unchecked (&bw, 0x9669); /* Write a length of 0 for now */ gst_byte_writer_put_uint8_unchecked (&bw, 0); if (mode->fps_n == 24000 && mode->fps_d == 1001) { gst_byte_writer_put_uint8_unchecked (&bw, 0x1f); } else if (mode->fps_n == 24 && mode->fps_d == 1) { gst_byte_writer_put_uint8_unchecked (&bw, 0x2f); } else if (mode->fps_n == 25 && mode->fps_d == 1) { gst_byte_writer_put_uint8_unchecked (&bw, 0x3f); } else if (mode->fps_n == 30000 && mode->fps_d == 1001) { gst_byte_writer_put_uint8_unchecked (&bw, 0x4f); } else if (mode->fps_n == 30 && mode->fps_d == 1) { gst_byte_writer_put_uint8_unchecked (&bw, 0x5f); } else if (mode->fps_n == 50 && mode->fps_d == 1) { gst_byte_writer_put_uint8_unchecked (&bw, 0x6f); } else if (mode->fps_n == 60000 && mode->fps_d == 1001) { gst_byte_writer_put_uint8_unchecked (&bw, 0x7f); } else if (mode->fps_n == 60 && mode->fps_d == 1) { gst_byte_writer_put_uint8_unchecked (&bw, 0x8f); } else { g_assert_not_reached (); } /* ccdata_present | caption_service_active */ flags = 0x42; /* time_code_present */ if (tc_meta) flags |= 0x80; /* reserved */ flags |= 0x01; gst_byte_writer_put_uint8_unchecked (&bw, flags); gst_byte_writer_put_uint16_be_unchecked (&bw, self->cdp_hdr_sequence_cntr); if (tc_meta) { const GstVideoTimeCode *tc = &tc_meta->tc; guint8 u8; gst_byte_writer_put_uint8_unchecked (&bw, 0x71); /* reserved 11 - 2 bits */ u8 = 0xc0; /* tens of hours - 2 bits */ u8 |= ((tc->hours / 10) & 0x3) << 4; /* units of hours - 4 bits */ u8 |= (tc->hours % 10) & 0xf; gst_byte_writer_put_uint8_unchecked (&bw, u8); /* reserved 1 - 1 bit */ u8 = 0x80; /* tens of minutes - 3 bits */ u8 |= ((tc->minutes / 10) & 0x7) << 4; /* units of minutes - 4 bits */ u8 |= (tc->minutes % 10) & 0xf; gst_byte_writer_put_uint8_unchecked (&bw, u8); /* field flag - 1 bit */ u8 = tc->field_count < 2 ? 0x00 : 0x80; /* tens of seconds - 3 bits */ u8 |= ((tc->seconds / 10) & 0x7) << 4; /* units of seconds - 4 bits */ u8 |= (tc->seconds % 10) & 0xf; gst_byte_writer_put_uint8_unchecked (&bw, u8); /* drop frame flag - 1 bit */ u8 = (tc->config.flags & GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME) ? 0x80 : 0x00; /* reserved0 - 1 bit */ /* tens of frames - 2 bits */ u8 |= ((tc->frames / 10) & 0x3) << 4; /* units of frames 4 bits */ u8 |= (tc->frames % 10) & 0xf; gst_byte_writer_put_uint8_unchecked (&bw, u8); } gst_byte_writer_put_uint8_unchecked (&bw, 0x72); gst_byte_writer_put_uint8_unchecked (&bw, 0xe0 | cc_data_len / 3); gst_byte_writer_put_data_unchecked (&bw, cc_data, cc_data_len); gst_byte_writer_put_uint8_unchecked (&bw, 0x74); gst_byte_writer_put_uint16_be_unchecked (&bw, self->cdp_hdr_sequence_cntr); self->cdp_hdr_sequence_cntr++; /* We calculate the checksum afterwards */ gst_byte_writer_put_uint8_unchecked (&bw, 0); len = gst_byte_writer_get_pos (&bw); gst_byte_writer_set_pos (&bw, 2); gst_byte_writer_put_uint8_unchecked (&bw, len); checksum = 0; for (i = 0; i < len; i++) { checksum += cdp[i]; } checksum &= 0xff; checksum = 256 - checksum; cdp[len - 1] = checksum; return len; } static void write_vbi (GstDecklinkVideoSink * self, GstBuffer * buffer, BMDPixelFormat format, GstDecklinkVideoFrame * frame, GstVideoTimeCodeMeta * tc_meta) { IDeckLinkVideoFrameAncillary *vanc_frame = NULL; gpointer iter = NULL; GstVideoCaptionMeta *cc_meta; guint8 *vancdata; gboolean got_captions = FALSE; if (self->caption_line == 0 && self->afd_bar_line == 0) return; if (self->vbiencoder == NULL) { self->vbiencoder = gst_video_vbi_encoder_new (GST_VIDEO_FORMAT_v210, self->info.width); self->anc_vformat = GST_VIDEO_FORMAT_v210; } /* Put any closed captions into the configured line */ while ((cc_meta = (GstVideoCaptionMeta *) gst_buffer_iterate_meta_filtered (buffer, &iter, GST_VIDEO_CAPTION_META_API_TYPE))) { switch (cc_meta->caption_type) { case GST_VIDEO_CAPTION_TYPE_CEA608_RAW:{ guint8 data[138]; guint i, n; n = cc_meta->size / 2; if (cc_meta->size > 46) { GST_WARNING_OBJECT (self, "Too big raw CEA608 buffer"); break; } /* This is the offset from line 9 for 525-line fields and from line * 5 for 625-line fields. * * The highest bit is set for field 1 but not for field 0, but we * have no way of knowning the field here */ for (i = 0; i < n; i++) { data[3 * i] = 0x80 | (self->info.height == 525 ? self->caption_line - 9 : self->caption_line - 5); data[3 * i + 1] = cc_meta->data[2 * i]; data[3 * i + 2] = cc_meta->data[2 * i + 1]; } if (!gst_video_vbi_encoder_add_ancillary (self->vbiencoder, FALSE, GST_VIDEO_ANCILLARY_DID16_S334_EIA_608 >> 8, GST_VIDEO_ANCILLARY_DID16_S334_EIA_608 & 0xff, data, 3)) GST_WARNING_OBJECT (self, "Couldn't add meta to ancillary data"); got_captions = TRUE; break; } case GST_VIDEO_CAPTION_TYPE_CEA608_S334_1A:{ if (!gst_video_vbi_encoder_add_ancillary (self->vbiencoder, FALSE, GST_VIDEO_ANCILLARY_DID16_S334_EIA_608 >> 8, GST_VIDEO_ANCILLARY_DID16_S334_EIA_608 & 0xff, cc_meta->data, cc_meta->size)) GST_WARNING_OBJECT (self, "Couldn't add meta to ancillary data"); got_captions = TRUE; break; } case GST_VIDEO_CAPTION_TYPE_CEA708_RAW:{ guint8 data[256]; guint n; n = cc_meta->size / 3; if (cc_meta->size > 46) { GST_WARNING_OBJECT (self, "Too big raw CEA708 buffer"); break; } n = convert_cea708_cc_data_cea708_cdp_internal (self, cc_meta->data, cc_meta->size, data, sizeof (data), tc_meta); if (!gst_video_vbi_encoder_add_ancillary (self->vbiencoder, FALSE, GST_VIDEO_ANCILLARY_DID16_S334_EIA_708 >> 8, GST_VIDEO_ANCILLARY_DID16_S334_EIA_708 & 0xff, data, n)) GST_WARNING_OBJECT (self, "Couldn't add meta to ancillary data"); got_captions = TRUE; break; } case GST_VIDEO_CAPTION_TYPE_CEA708_CDP:{ if (!gst_video_vbi_encoder_add_ancillary (self->vbiencoder, FALSE, GST_VIDEO_ANCILLARY_DID16_S334_EIA_708 >> 8, GST_VIDEO_ANCILLARY_DID16_S334_EIA_708 & 0xff, cc_meta->data, cc_meta->size)) GST_WARNING_OBJECT (self, "Couldn't add meta to ancillary data"); got_captions = TRUE; break; } default:{ GST_FIXME_OBJECT (self, "Caption type %d not supported", cc_meta->caption_type); break; } } } if ((got_captions || self->afd_bar_line != 0) && self->output->output->CreateAncillaryData (bmdFormat10BitYUV, &vanc_frame) == S_OK) { GstVideoAFDMeta *afd_meta = NULL, *afd_meta2 = NULL; GstVideoBarMeta *bar_meta = NULL, *bar_meta2 = NULL; GstMeta *meta; gpointer meta_iter; guint8 afd_bar_data[8] = { 0, }; guint8 afd_bar_data2[8] = { 0, }; guint8 afd = 0; gboolean is_letterbox = 0; guint16 bar1 = 0, bar2 = 0; guint i; // Get any reasonable AFD/Bar metas for both fields meta_iter = NULL; while ((meta = gst_buffer_iterate_meta_filtered (buffer, &meta_iter, GST_VIDEO_AFD_META_API_TYPE))) { GstVideoAFDMeta *tmp_meta = (GstVideoAFDMeta *) meta; if (tmp_meta->field == 0 || !afd_meta || (afd_meta && afd_meta->field != 0 && tmp_meta->field == 0)) afd_meta = tmp_meta; if (tmp_meta->field == 1 || !afd_meta2 || (afd_meta2 && afd_meta->field != 1 && tmp_meta->field == 1)) afd_meta2 = tmp_meta; } meta_iter = NULL; while ((meta = gst_buffer_iterate_meta_filtered (buffer, &meta_iter, GST_VIDEO_BAR_META_API_TYPE))) { GstVideoBarMeta *tmp_meta = (GstVideoBarMeta *) meta; if (tmp_meta->field == 0 || !bar_meta || (bar_meta && bar_meta->field != 0 && tmp_meta->field == 0)) bar_meta = tmp_meta; if (tmp_meta->field == 1 || !bar_meta2 || (bar_meta2 && bar_meta->field != 1 && tmp_meta->field == 1)) bar_meta2 = tmp_meta; } for (i = 0; i < 2; i++) { guint8 *afd_bar_data_ptr; if (i == 0) { afd_bar_data_ptr = afd_bar_data; afd = afd_meta ? afd_meta->afd : 0; is_letterbox = bar_meta ? bar_meta->is_letterbox : FALSE; bar1 = bar_meta ? bar_meta->bar_data1 : 0; bar2 = bar_meta ? bar_meta->bar_data2 : 0; } else { afd_bar_data_ptr = afd_bar_data2; afd = afd_meta2 ? afd_meta2->afd : 0; is_letterbox = bar_meta2 ? bar_meta2->is_letterbox : FALSE; bar1 = bar_meta2 ? bar_meta2->bar_data1 : 0; bar2 = bar_meta2 ? bar_meta2->bar_data2 : 0; } /* See SMPTE 2016-3 Section 4 */ /* AFD and AR */ if (self->mode <= (gint) GST_DECKLINK_MODE_PAL_P) { afd_bar_data_ptr[0] = (afd << 3) | 0x0; } else { afd_bar_data_ptr[0] = (afd << 3) | 0x4; } /* Bar flags */ afd_bar_data_ptr[3] = is_letterbox ? 0xc0 : 0x30; /* Bar value 1 and 2 */ GST_WRITE_UINT16_BE (&afd_bar_data_ptr[4], bar1); GST_WRITE_UINT16_BE (&afd_bar_data_ptr[6], bar2); } /* AFD on the same line as the captions */ if (self->caption_line == self->afd_bar_line) { if (!gst_video_vbi_encoder_add_ancillary (self->vbiencoder, FALSE, GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR >> 8, GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR & 0xff, afd_bar_data, sizeof (afd_bar_data))) GST_WARNING_OBJECT (self, "Couldn't add AFD/Bar data to ancillary data"); } /* FIXME: Add captions to the correct field? Captions for the second * field should probably be inserted into the second field */ if (got_captions || self->caption_line == self->afd_bar_line) { if (vanc_frame->GetBufferForVerticalBlankingLine (self->caption_line, (void **) &vancdata) == S_OK) { gst_video_vbi_encoder_write_line (self->vbiencoder, vancdata); } else { GST_WARNING_OBJECT (self, "Failed to get buffer for line %d ancillary data", self->caption_line); } } /* AFD on a different line than the captions */ if (self->afd_bar_line != 0 && self->caption_line != self->afd_bar_line) { if (!gst_video_vbi_encoder_add_ancillary (self->vbiencoder, FALSE, GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR >> 8, GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR & 0xff, afd_bar_data, sizeof (afd_bar_data))) GST_WARNING_OBJECT (self, "Couldn't add AFD/Bar data to ancillary data"); if (vanc_frame->GetBufferForVerticalBlankingLine (self->afd_bar_line, (void **) &vancdata) == S_OK) { gst_video_vbi_encoder_write_line (self->vbiencoder, vancdata); } else { GST_WARNING_OBJECT (self, "Failed to get buffer for line %d ancillary data", self->afd_bar_line); } } /* For interlaced video we need to also add AFD to the second field */ if (GST_VIDEO_INFO_IS_INTERLACED (&self->info) && self->afd_bar_line != 0) { guint field2_offset; /* The VANC lines for the second field are at an offset, depending on * the format in use. */ switch (self->info.height) { case 486: /* NTSC: 525 / 2 + 1 */ field2_offset = 263; break; case 576: /* PAL: 625 / 2 + 1 */ field2_offset = 313; break; case 1080: /* 1080i: 1125 / 2 + 1 */ field2_offset = 563; break; default: g_assert_not_reached (); } if (!gst_video_vbi_encoder_add_ancillary (self->vbiencoder, FALSE, GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR >> 8, GST_VIDEO_ANCILLARY_DID16_S2016_3_AFD_BAR & 0xff, afd_bar_data2, sizeof (afd_bar_data))) GST_WARNING_OBJECT (self, "Couldn't add AFD/Bar data to ancillary data"); if (vanc_frame->GetBufferForVerticalBlankingLine (self->afd_bar_line + field2_offset, (void **) &vancdata) == S_OK) { gst_video_vbi_encoder_write_line (self->vbiencoder, vancdata); } else { GST_WARNING_OBJECT (self, "Failed to get buffer for line %d ancillary data", self->afd_bar_line); } } if (frame->SetAncillaryData (vanc_frame) != S_OK) { GST_WARNING_OBJECT (self, "Failed to set ancillary data"); } vanc_frame->Release (); } else if (got_captions || self->afd_bar_line != 0) { GST_WARNING_OBJECT (self, "Failed to allocate ancillary data frame"); } } static gboolean buffer_is_pbo_memory (GstBuffer * buffer) { GstMemory *mem; mem = gst_buffer_peek_memory (buffer, 0); if (mem->allocator && g_strcmp0 (mem->allocator->mem_type, "GLMemoryPBO") == 0) return TRUE; return FALSE; } static GstFlowReturn gst_decklink_video_sink_prepare (GstBaseSink * bsink, GstBuffer * buffer) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink); GstVideoFrame vframe; GstDecklinkVideoFrame *frame = NULL; GstFlowReturn flow_ret; HRESULT ret; GstClockTime timestamp, duration; GstClockTime running_time, running_time_duration; GstClockTime latency, render_delay; GstClockTimeDiff ts_offset; GstDecklinkVideoFormat caps_format; BMDPixelFormat format; GstVideoTimeCodeMeta *tc_meta; GST_DEBUG_OBJECT (self, "Preparing buffer %" GST_PTR_FORMAT, buffer); // FIXME: Handle no timestamps if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) { return GST_FLOW_ERROR; } caps_format = gst_decklink_type_from_video_format (self->info.finfo->format); format = gst_decklink_pixel_format_from_type (caps_format); timestamp = GST_BUFFER_TIMESTAMP (buffer); duration = GST_BUFFER_DURATION (buffer); if (duration == GST_CLOCK_TIME_NONE) { duration = gst_util_uint64_scale_int (GST_SECOND, self->info.fps_d, self->info.fps_n); } running_time = gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment, GST_FORMAT_TIME, timestamp); running_time_duration = gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment, GST_FORMAT_TIME, timestamp + duration) - running_time; /* See gst_base_sink_adjust_time() */ latency = gst_base_sink_get_latency (bsink); render_delay = gst_base_sink_get_render_delay (bsink); ts_offset = gst_base_sink_get_ts_offset (bsink); running_time += latency; if (ts_offset < 0) { ts_offset = -ts_offset; if ((GstClockTime) ts_offset < running_time) running_time -= ts_offset; else running_time = 0; } else { running_time += ts_offset; } if (running_time > render_delay) running_time -= render_delay; else running_time = 0; if (!gst_video_frame_map (&vframe, &self->info, buffer, GST_MAP_READ)) { GST_ERROR_OBJECT (self, "Failed to map video frame"); flow_ret = GST_FLOW_ERROR; goto out; } // If the video frame is stored in PBO memory then we need to copy anyway as // it might be stored in CPU-accessible GPU memory that can't be accessed // from the Decklink driver. if (buffer_is_pbo_memory (buffer)) { guint8 *outdata; const guint8 *indata; gint i, src_stride, dest_stride, stride; IDeckLinkMutableVideoFrame *dframe; ret = self->output->output->CreateVideoFrame (self->info.width, self->info.height, self->info.stride[0], format, bmdFrameFlagDefault, &dframe); if (ret != S_OK) { gst_video_frame_unmap (&vframe); GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL), ("Failed to create video frame: 0x%08lx", (unsigned long) ret)); return GST_FLOW_ERROR; } dframe->GetBytes ((void **) &outdata); indata = (guint8 *) GST_VIDEO_FRAME_PLANE_DATA (&vframe, 0); src_stride = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, 0); dest_stride = dframe->GetRowBytes (); stride = MIN (src_stride, dest_stride); for (i = 0; i < self->info.height; i++) { memcpy (outdata, indata, stride); indata += src_stride; outdata += dest_stride; } gst_video_frame_unmap (&vframe); // Takes ownership of the frame frame = new GstDecklinkVideoFrame (dframe); } else { // Takes ownership of the frame frame = new GstDecklinkVideoFrame (&vframe); } tc_meta = gst_buffer_get_video_time_code_meta (buffer); if (tc_meta) { gchar *tc_str; frame->SetTimecode (&tc_meta->tc); tc_str = gst_video_time_code_to_string (&tc_meta->tc); GST_DEBUG_OBJECT (self, "Set frame timecode to %s", tc_str); g_free (tc_str); } write_vbi (self, buffer, format, frame, tc_meta); gst_decklink_video_sink_convert_to_internal_clock (self, &running_time, &running_time_duration); GST_LOG_OBJECT (self, "Scheduling video frame %p at %" GST_TIME_FORMAT " with duration %" GST_TIME_FORMAT, frame, GST_TIME_ARGS (running_time), GST_TIME_ARGS (running_time_duration)); ret = self->output->output->ScheduleVideoFrame (frame, running_time, running_time_duration, GST_SECOND); if (ret != S_OK) { GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL), ("Failed to schedule frame: 0x%08lx", (unsigned long) ret)); flow_ret = GST_FLOW_ERROR; goto out; } flow_ret = GST_FLOW_OK; out: if (frame) frame->Release (); return flow_ret; } static gboolean gst_decklink_video_sink_open (GstBaseSink * bsink) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink); const GstDecklinkMode *mode; GST_DEBUG_OBJECT (self, "Starting"); self->output = gst_decklink_acquire_nth_output (self->device_number, self->persistent_id, GST_ELEMENT_CAST (self), FALSE); if (!self->output) { GST_ERROR_OBJECT (self, "Failed to acquire output"); return FALSE; } g_object_notify (G_OBJECT (self), "hw-serial-number"); mode = gst_decklink_get_mode (self->mode); g_assert (mode != NULL); g_mutex_lock (&self->output->lock); self->output->mode = mode; self->output->start_scheduled_playback = gst_decklink_video_sink_start_scheduled_playback; self->output->clock_start_time = GST_CLOCK_TIME_NONE; self->output->clock_epoch += self->output->clock_last_time; self->output->clock_last_time = 0; self->output->clock_offset = 0; GST_OBJECT_LOCK (self); self->internal_base_time = GST_CLOCK_TIME_NONE; self->external_base_time = GST_CLOCK_TIME_NONE; GST_OBJECT_UNLOCK (self); g_mutex_unlock (&self->output->lock); return TRUE; } static gboolean gst_decklink_video_sink_close (GstBaseSink * bsink) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink); GST_DEBUG_OBJECT (self, "Closing"); if (self->output) { g_mutex_lock (&self->output->lock); self->output->mode = NULL; self->output->video_enabled = FALSE; if (self->output->start_scheduled_playback && self->output->videosink) self->output->start_scheduled_playback (self->output->videosink); g_mutex_unlock (&self->output->lock); self->output->output->DisableVideoOutput (); gst_decklink_release_nth_output (self->device_number, self->persistent_id, GST_ELEMENT_CAST (self), FALSE); self->output = NULL; } return TRUE; } static gboolean gst_decklink_video_sink_stop (GstDecklinkVideoSink * self) { GST_DEBUG_OBJECT (self, "Stopping"); if (self->output && self->output->video_enabled) { g_mutex_lock (&self->output->lock); self->output->video_enabled = FALSE; g_mutex_unlock (&self->output->lock); self->output->output->DisableVideoOutput (); self->output->output->SetScheduledFrameCompletionCallback (NULL); } if (self->vbiencoder) { gst_video_vbi_encoder_free (self->vbiencoder); self->vbiencoder = NULL; self->anc_vformat = GST_VIDEO_FORMAT_UNKNOWN; } return TRUE; } static void _wait_for_stop_notify (GstDecklinkVideoSink * self) { bool active = false; self->output->output->IsScheduledPlaybackRunning (&active); while (active) { /* cause sometimes decklink stops without notifying us... */ guint64 wait_time = g_get_monotonic_time () + G_TIME_SPAN_SECOND; if (!g_cond_wait_until (&self->output->cond, &self->output->lock, wait_time)) GST_WARNING_OBJECT (self, "Failed to wait for stop notification"); self->output->output->IsScheduledPlaybackRunning (&active); } } static void gst_decklink_video_sink_start_scheduled_playback (GstElement * element) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (element); GstClockTime start_time; HRESULT res; bool active; // Check if we're already started if (self->output->started) { GST_DEBUG_OBJECT (self, "Already started"); return; } // Check if we're ready to start: // we need video and audio enabled, if there is audio // and both of the two elements need to be set to PLAYING already if (!self->output->video_enabled) { GST_DEBUG_OBJECT (self, "Not starting scheduled playback yet: video not enabled yet!"); return; } if (self->output->audiosink && !self->output->audio_enabled) { GST_DEBUG_OBJECT (self, "Not starting scheduled playback yet: " "have audio but not enabled yet!"); return; } if ((GST_STATE (self) < GST_STATE_PAUSED && GST_STATE_PENDING (self) < GST_STATE_PAUSED) || (self->output->audiosink && GST_STATE (self->output->audiosink) < GST_STATE_PAUSED && GST_STATE_PENDING (self->output->audiosink) < GST_STATE_PAUSED)) { GST_DEBUG_OBJECT (self, "Not starting scheduled playback yet: " "Elements are not set to PAUSED yet"); return; } // Need to unlock to get the clock time g_mutex_unlock (&self->output->lock); start_time = gst_clock_get_internal_time (self->output->clock); g_mutex_lock (&self->output->lock); // Check if someone else started in the meantime if (self->output->started) { return; } active = false; self->output->output->IsScheduledPlaybackRunning (&active); if (active) { GST_DEBUG_OBJECT (self, "Stopping scheduled playback"); self->output->started = FALSE; res = self->output->output->StopScheduledPlayback (0, 0, 0); if (res != S_OK) { GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL), ("Failed to stop scheduled playback: 0x%08lx", (unsigned long) res)); return; } // Wait until scheduled playback actually stopped _wait_for_stop_notify (self); } GST_INFO_OBJECT (self, "Starting scheduled playback at %" GST_TIME_FORMAT, GST_TIME_ARGS (start_time)); res = self->output->output->StartScheduledPlayback (start_time, GST_SECOND, 1.0); if (res != S_OK) { GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL), ("Failed to start scheduled playback: 0x%08lx", (unsigned long) res)); return; } self->output->started = TRUE; } static GstStateChangeReturn gst_decklink_video_sink_stop_scheduled_playback (GstDecklinkVideoSink * self) { GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GstClockTime start_time; HRESULT res; if (!self->output->started) return ret; start_time = gst_clock_get_internal_time (self->output->clock); GST_INFO_OBJECT (self, "Stopping scheduled playback at %" GST_TIME_FORMAT, GST_TIME_ARGS (start_time)); g_mutex_lock (&self->output->lock); self->output->started = FALSE; res = self->output->output->StopScheduledPlayback (start_time, 0, GST_SECOND); if (res != S_OK) { GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL), ("Failed to stop scheduled playback: 0x%08lx", (unsigned long) res)); ret = GST_STATE_CHANGE_FAILURE; } else { // Wait until scheduled playback actually stopped _wait_for_stop_notify (self); } g_mutex_unlock (&self->output->lock); GST_OBJECT_LOCK (self); self->internal_base_time = GST_CLOCK_TIME_NONE; self->external_base_time = GST_CLOCK_TIME_NONE; GST_OBJECT_UNLOCK (self); return ret; } static GstStateChangeReturn gst_decklink_video_sink_change_state (GstElement * element, GstStateChange transition) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (element); GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GST_DEBUG_OBJECT (self, "changing state: %s => %s", gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)), gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition))); switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: self->vbiencoder = NULL; self->anc_vformat = GST_VIDEO_FORMAT_UNKNOWN; self->cdp_hdr_sequence_cntr = 0; g_mutex_lock (&self->output->lock); self->output->clock_epoch += self->output->clock_last_time; self->output->clock_last_time = 0; self->output->clock_offset = 0; g_mutex_unlock (&self->output->lock); gst_element_post_message (element, gst_message_new_clock_provide (GST_OBJECT_CAST (element), self->output->clock, TRUE)); g_mutex_lock (&self->output->lock); if (self->output->start_scheduled_playback) self->output->start_scheduled_playback (self->output->videosink); g_mutex_unlock (&self->output->lock); break; case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{ GstClock *clock; clock = gst_element_get_clock (GST_ELEMENT_CAST (self)); if (clock) { if (clock != self->output->clock) { gst_clock_set_master (self->output->clock, clock); } GST_OBJECT_LOCK (self); if (self->external_base_time == GST_CLOCK_TIME_NONE || self->internal_base_time == GST_CLOCK_TIME_NONE) { self->external_base_time = gst_clock_get_internal_time (clock); self->internal_base_time = gst_clock_get_internal_time (self->output->clock); self->internal_time_offset = self->internal_base_time; } else if (GST_CLOCK_TIME_IS_VALID (self->internal_pause_time)) { self->internal_time_offset += gst_clock_get_internal_time (self->output->clock) - self->internal_pause_time; } GST_INFO_OBJECT (self, "clock has been set to %" GST_PTR_FORMAT ", updated base times - internal: %" GST_TIME_FORMAT " external: %" GST_TIME_FORMAT " internal offset %" GST_TIME_FORMAT, clock, GST_TIME_ARGS (self->internal_base_time), GST_TIME_ARGS (self->external_base_time), GST_TIME_ARGS (self->internal_time_offset)); GST_OBJECT_UNLOCK (self); gst_object_unref (clock); } else { GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL), ("Need a clock to go to PLAYING")); ret = GST_STATE_CHANGE_FAILURE; } break; } case GST_STATE_CHANGE_PAUSED_TO_READY: if (gst_decklink_video_sink_stop_scheduled_playback (self) == GST_STATE_CHANGE_FAILURE) ret = GST_STATE_CHANGE_FAILURE; break; case GST_STATE_CHANGE_PLAYING_TO_PAUSED: break; default: break; } if (ret == GST_STATE_CHANGE_FAILURE) return ret; ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); if (ret == GST_STATE_CHANGE_FAILURE) return ret; switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY:{ gst_element_post_message (element, gst_message_new_clock_lost (GST_OBJECT_CAST (element), self->output->clock)); gst_clock_set_master (self->output->clock, NULL); // Reset calibration to make the clock reusable next time we use it gst_clock_set_calibration (self->output->clock, 0, 0, 1, 1); g_mutex_lock (&self->output->lock); self->output->clock_epoch += self->output->clock_last_time; self->output->clock_last_time = 0; self->output->clock_offset = 0; g_mutex_unlock (&self->output->lock); gst_decklink_video_sink_stop (self); GST_OBJECT_LOCK (self); self->internal_base_time = GST_CLOCK_TIME_NONE; self->external_base_time = GST_CLOCK_TIME_NONE; self->internal_pause_time = GST_CLOCK_TIME_NONE; GST_OBJECT_UNLOCK (self); break; } case GST_STATE_CHANGE_READY_TO_PAUSED:{ break; } case GST_STATE_CHANGE_PAUSED_TO_PLAYING: break; case GST_STATE_CHANGE_PLAYING_TO_PAUSED: self->internal_pause_time = gst_clock_get_internal_time (self->output->clock); break; default: break; } return ret; } static gboolean gst_decklink_video_sink_event (GstBaseSink * bsink, GstEvent * event) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_FLUSH_START: { break; } case GST_EVENT_FLUSH_STOP: { gboolean reset_time; gst_event_parse_flush_stop (event, &reset_time); if (reset_time) { GST_OBJECT_LOCK (self); /* force a recalculation of clock base times */ self->external_base_time = GST_CLOCK_TIME_NONE; self->internal_base_time = GST_CLOCK_TIME_NONE; GST_OBJECT_UNLOCK (self); } break; } default: break; } return GST_BASE_SINK_CLASS (parent_class)->event (bsink, event); } static GstClock * gst_decklink_video_sink_provide_clock (GstElement * element) { GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (element); if (!self->output) return NULL; return GST_CLOCK_CAST (gst_object_ref (self->output->clock)); } static gboolean gst_decklink_video_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query) { GstCaps *caps; GstVideoInfo info; GstBufferPool *pool; guint size; gst_query_parse_allocation (query, &caps, NULL); if (caps == NULL) return FALSE; if (!gst_video_info_from_caps (&info, caps)) return FALSE; size = GST_VIDEO_INFO_SIZE (&info); if (gst_query_get_n_allocation_pools (query) == 0) { GstStructure *structure; GstAllocator *allocator = NULL; GstAllocationParams params = { (GstMemoryFlags) 0, 15, 0, 0 }; if (gst_query_get_n_allocation_params (query) > 0) gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms); else gst_query_add_allocation_param (query, allocator, ¶ms); pool = gst_video_buffer_pool_new (); structure = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_set_params (structure, caps, size, 0, 0); gst_buffer_pool_config_set_allocator (structure, allocator, ¶ms); if (allocator) gst_object_unref (allocator); if (!gst_buffer_pool_set_config (pool, structure)) goto config_failed; gst_query_add_allocation_pool (query, pool, size, 0, 0); gst_object_unref (pool); gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL); } return TRUE; // ERRORS config_failed: { GST_ERROR_OBJECT (bsink, "failed to set config"); gst_object_unref (pool); return FALSE; } }