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4d1101d335
... for user to be able to set the number of required samples. For instance, our default value is 240 samples (about 5ms latency in case that sample rate is 48000), which might be larger than actual buffer size of audio capture device. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2307>
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/*
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* Copyright (C) 2018 Centricular Ltd.
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* Author: Nirbheek Chauhan <nirbheek@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_AUDIOLATENCY_H__
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#define __GST_AUDIOLATENCY_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_AUDIOLATENCY \
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(gst_audiolatency_get_type ())
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#define GST_AUDIOLATENCY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUDIOLATENCY, GstAudioLatency))
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#define GST_AUDIOLATENCY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUDIOLATENCY, GstAudioLatencyClass))
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#define GST_IS_AUDIOLATENCY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUDIOLATENCY))
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#define GST_IS_AUDIOLATENCY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUDIOLATENCY))
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typedef struct _GstAudioLatency GstAudioLatency;
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typedef struct _GstAudioLatencyClass GstAudioLatencyClass;
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#define GST_AUDIOLATENCY_NUM_LATENCIES 5
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struct _GstAudioLatency
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{
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GstBin parent;
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GstPad *sinkpad;
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GstPad *srcpad;
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/* audiotestsrc */
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GstElement *audiosrc;
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/* measurements */
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gint64 send_pts;
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gint64 recv_pts;
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gint next_latency_idx;
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gint latencies[GST_AUDIOLATENCY_NUM_LATENCIES];
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/* properties */
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gboolean print_latency;
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gint samples_per_buffer;
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};
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struct _GstAudioLatencyClass
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{
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GstBinClass parent_class;
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};
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GType gst_audiolatency_get_type (void);
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GST_ELEMENT_REGISTER_DECLARE (audiolatency);
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G_END_DECLS
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#endif /* __GST_AUDIOLATENCY_H__ */
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