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b5ff71fc3c
Sometimes we might get an audio packet without a corresponding video frame. In these cases, the stream and hardware reference timestamps would be missing, because they're called on the video frame. Instead of potentially breaking stuff downstream that might depend on these, we now extrapolate them. https://bugzilla.gnome.org/show_bug.cgi?id=792042
96 lines
2.7 KiB
C
96 lines
2.7 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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*
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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_AUDIO_SRC_H__
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#define __GST_DECKLINK_AUDIO_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/audio/audio.h>
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#include "gstdecklink.h"
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G_BEGIN_DECLS
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#define GST_TYPE_DECKLINK_AUDIO_SRC \
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(gst_decklink_audio_src_get_type())
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#define GST_DECKLINK_AUDIO_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_DECKLINK_AUDIO_SRC, GstDecklinkAudioSrc))
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#define GST_DECKLINK_AUDIO_SRC_CAST(obj) \
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((GstDecklinkAudioSrc*)obj)
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#define GST_DECKLINK_AUDIO_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_DECKLINK_AUDIO_SRC, GstDecklinkAudioSrcClass))
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#define GST_IS_DECKLINK_AUDIO_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_DECKLINK_AUDIO_SRC))
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#define GST_IS_DECKLINK_AUDIO_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_DECKLINK_AUDIO_SRC))
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typedef struct _GstDecklinkAudioSrc GstDecklinkAudioSrc;
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typedef struct _GstDecklinkAudioSrcClass GstDecklinkAudioSrcClass;
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struct _GstDecklinkAudioSrc
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{
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GstPushSrc parent;
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GstDecklinkModeEnum mode;
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GstDecklinkAudioConnectionEnum connection;
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gint device_number;
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GstDecklinkAudioChannelsEnum channels;
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gint64 channels_found;
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GstAudioInfo info;
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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_packets;
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/* properties for handling jittery timestamps */
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GstClockTime alignment_threshold;
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GstClockTime discont_wait;
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/* counter to keep track of timestamps */
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guint64 next_offset;
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/* detect gaps in stream time */
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GstClockTime expected_stream_time;
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guint64 processed;
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guint64 dropped;
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GstClockTime last_hardware_time;
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/* Last time we noticed a discont */
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GstClockTime discont_time;
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guint buffer_size;
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};
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struct _GstDecklinkAudioSrcClass
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{
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GstPushSrcClass parent_class;
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};
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GType gst_decklink_audio_src_get_type (void);
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G_END_DECLS
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#endif /* __GST_DECKLINK_AUDIO_SRC_H__ */
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