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gstreamer/subprojects/gst-plugins-bad/sys/decklink/gstdecklinkvideosink.cpp
Sebastian Dröge 2aae64edb9 decklinkvideosink: Pass video frames directly to the Decklink SDK without copying 
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.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2674>
2022-07-01 08:46:48 +00:00

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/* GStreamer
* Copyright (C) 2011 David Schleef <ds@entropywave.com>
* Copyright (C) 2014 Sebastian Dröge <sebastian@centricular.com>
*
* 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 <string.h>
GST_DEBUG_CATEGORY_STATIC (gst_decklink_video_sink_debug);
#define GST_CAT_DEFAULT gst_decklink_video_sink_debug
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;
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,
};
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)));
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 <ds@entropywave.com>, "
"Sebastian Dröge <sebastian@centricular.com>");
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->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:
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;
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;
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,
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,
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, &params);
else
gst_query_add_allocation_param (query, allocator, &params);
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, &params);
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;
}
}
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