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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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bf9ecd65cf
Previously we would've reported that there is signal unless we know for sure that we don't have signal. For example signal would've been reported before the device is even opened. Now keep track whether the signal state is unknown or not and report no signal if we don't know yet. As before, only send an INFO message about signal recovery if we actually had a signal loss before.
125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/* GStreamer
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*
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* Copyright (C) 2011 David Schleef <ds@schleef.org>
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* Copyright (C) 2014 Sebastian Dröge <sebastian@centricular.com>
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* Copyright (C) 2015 Florian Langlois <florian.langlois@fr.thalesgroup.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_DECKLINK_VIDEO_SRC_H__
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#define __GST_DECKLINK_VIDEO_SRC_H__
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#include <gst/gst.h>
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#include <gst/base/base.h>
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#include <gst/video/video.h>
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#include "gstdecklink.h"
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G_BEGIN_DECLS
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#define GST_TYPE_DECKLINK_VIDEO_SRC \
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(gst_decklink_video_src_get_type())
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#define GST_DECKLINK_VIDEO_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_DECKLINK_VIDEO_SRC, GstDecklinkVideoSrc))
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#define GST_DECKLINK_VIDEO_SRC_CAST(obj) \
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((GstDecklinkVideoSrc*)obj)
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#define GST_DECKLINK_VIDEO_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_DECKLINK_VIDEO_SRC, GstDecklinkVideoSrcClass))
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#define GST_IS_DECKLINK_VIDEO_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_DECKLINK_VIDEO_SRC))
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#define GST_IS_DECKLINK_VIDEO_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_DECKLINK_VIDEO_SRC))
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typedef struct _GstDecklinkVideoSrc GstDecklinkVideoSrc;
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typedef struct _GstDecklinkVideoSrcClass GstDecklinkVideoSrcClass;
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typedef enum {
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SIGNAL_STATE_UNKNOWN,
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SIGNAL_STATE_LOST,
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SIGNAL_STATE_AVAILABLE,
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} GstDecklinkSignalState;
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struct _GstDecklinkVideoSrc
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{
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GstPushSrc parent;
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GstDecklinkModeEnum mode;
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GstDecklinkModeEnum caps_mode;
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BMDPixelFormat caps_format;
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GstDecklinkConnectionEnum connection;
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gint device_number;
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gboolean output_stream_time;
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GstClockTime skip_first_time;
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gboolean drop_no_signal_frames;
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GstClockTime expected_stream_time;
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guint64 processed;
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guint64 dropped;
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guint64 first_stream_time;
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GstVideoInfo info;
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GstDecklinkVideoFormat video_format;
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BMDDuplexMode duplex_mode;
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BMDTimecodeFormat timecode_format;
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GstDecklinkInput *input;
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GCond cond;
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GMutex lock;
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gboolean flushing;
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GstQueueArray *current_frames;
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GstDecklinkSignalState signal_state;
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guint buffer_size;
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/* Protected by lock */
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GstClockTime first_time;
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GstClockTime *times;
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GstClockTime *times_temp;
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guint window_size, window_fill;
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gboolean window_filled;
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guint window_skip, window_skip_count;
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struct {
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GstClockTime xbase, b;
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GstClockTime num, den;
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} current_time_mapping;
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struct {
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GstClockTime xbase, b;
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GstClockTime num, den;
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} next_time_mapping;
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gboolean next_time_mapping_pending;
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GstVideoVBIParser *vbiparser;
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GstVideoFormat anc_vformat;
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gboolean output_cc;
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gint last_cc_vbi_line;
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gint last_cc_vbi_line_field2;
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gboolean output_afd_bar;
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gint last_afd_bar_vbi_line;
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gint last_afd_bar_vbi_line_field2;
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};
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struct _GstDecklinkVideoSrcClass
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{
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GstPushSrcClass parent_class;
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};
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GType gst_decklink_video_src_get_type (void);
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G_END_DECLS
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#endif /* __GST_DECKLINK_VIDEO_SRC_H__ */
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