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4fa850e3e6
The fomula, 'offset = time / rate', is correct only if the rate is never changed. When the rate is changed, the offset should be re-calculated based on the previous offset. https://bugzilla.gnome.org/show_bug.cgi?id=791269
87 lines
2.2 KiB
C
87 lines
2.2 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_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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GstAudioInfo info;
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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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gboolean skip_to_first;
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/* audio state */
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guint64 next_offset;
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guint64 next_ts;
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GstClockTime prev_in_time;
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guint64 prev_in_offset;
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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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GType gst_audio_rate_get_type (void);
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G_END_DECLS
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#endif /* __GST_AUDIO_RATE_H__ */
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