91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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_VIDEO_RATE_H__
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#define __GST_VIDEO_RATE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_RATE (gst_video_rate_get_type())
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G_DECLARE_FINAL_TYPE (GstVideoRate, gst_video_rate, GST, VIDEO_RATE,
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GstBaseTransform)
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/**
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* GstVideoRate:
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*
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* Opaque data structure.
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*/
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struct _GstVideoRate
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{
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GstBaseTransform parent;
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/* video state */
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gint from_rate_numerator, from_rate_denominator;
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gint to_rate_numerator, to_rate_denominator;
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guint64 next_ts; /* Timestamp of next buffer to output */
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GstBuffer *prevbuf;
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guint64 prev_ts; /* Previous buffer timestamp */
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guint64 out_frame_count; /* number of frames output since the beginning
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* of the segment or the last frame rate caps
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* change, whichever was later */
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guint64 base_ts; /* used in next_ts calculation after a
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* frame rate caps change */
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gboolean discont;
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guint64 last_ts; /* Timestamp of last input buffer */
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guint64 average_period;
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GstClockTimeDiff wanted_diff; /* target average diff */
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GstClockTimeDiff average; /* moving average period */
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gboolean force_variable_rate;
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gboolean updating_caps;
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guint64 max_duplication_time;
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guint64 max_closing_segment_duplication_duration;
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/* segment handling */
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GstSegment segment;
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/* properties */
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guint64 in, out, dup, drop;
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gboolean silent;
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gdouble new_pref;
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gboolean skip_to_first;
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gboolean drop_only;
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gboolean drop_out_of_segment;
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guint64 average_period_set;
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int max_rate;
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gdouble rate;
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gdouble pending_rate;
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GstCaps *in_caps;
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/* Only set right after caps were set so that we still have a reference to
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* the caps matching the content of `->prevbuf`, this way, if we get an EOS
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* right after a CAPS, we can reset to those caps and close the segment with
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* it */
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GstCaps *prev_caps;
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};
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GST_ELEMENT_REGISTER_DECLARE (videorate);
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G_END_DECLS
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#endif /* __GST_VIDEO_RATE_H__ */
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