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8b4f6dd43b
It may not be uncommon for the input timestamps to experience some jitter around the 'perfect time'. As such, instead of regularly adding and dropping samples, optionally allow for some tolerance in a more relaxed approach. API: GstAudioRate:tolerance
83 lines
2.1 KiB
C
83 lines
2.1 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_AUDIO_RATE_H__
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#define __GST_AUDIO_RATE_H__
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#include <gst/gst.h>
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#include <gst/audio/audio.h>
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G_BEGIN_DECLS
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#define GST_TYPE_AUDIO_RATE \
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(gst_audio_rate_get_type())
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#define GST_AUDIO_RATE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_RATE,GstAudioRate))
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#define GST_AUDIO_RATE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_RATE,GstAudioRate))
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#define GST_IS_AUDIO_RATE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_RATE))
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#define GST_IS_AUDIO_RATE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_RATE))
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typedef struct _GstAudioRate GstAudioRate;
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typedef struct _GstAudioRateClass GstAudioRateClass;
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/**
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* GstAudioRate:
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*
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* Opaque data structure.
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*/
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struct _GstAudioRate
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{
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GstElement element;
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GstPad *sinkpad, *srcpad;
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/* audio format */
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gint bytes_per_sample;
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gint rate;
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/* stats */
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guint64 in, out, add, drop;
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gboolean silent;
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guint64 tolerance;
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/* audio state */
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guint64 next_offset;
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guint64 next_ts;
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gboolean discont;
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gboolean new_segment;
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/* we accept all formats on the sink */
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GstSegment sink_segment;
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/* we output TIME format on the src */
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GstSegment src_segment;
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};
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struct _GstAudioRateClass
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{
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GstElementClass parent_class;
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};
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G_END_DECLS
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#endif /* __GST_AUDIO_RATE_H__ */
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