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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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524ea147cc
Remove some unused variables from the inner product functions. Make filter coefficients by interpolating if required. Rename some fields. Try hard to not recalculate filters when just chaging the rate. Add more proprties to audioresample.
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2007-2008> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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 __AUDIO_RESAMPLE_H__
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#define __AUDIO_RESAMPLE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.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_RESAMPLE \
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(gst_audio_resample_get_type())
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#define GST_AUDIO_RESAMPLE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_RESAMPLE,GstAudioResample))
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#define GST_AUDIO_RESAMPLE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_RESAMPLE,GstAudioResampleClass))
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#define GST_IS_AUDIO_RESAMPLE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_RESAMPLE))
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#define GST_IS_AUDIO_RESAMPLE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_RESAMPLE))
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typedef struct _GstAudioResample GstAudioResample;
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typedef struct _GstAudioResampleClass GstAudioResampleClass;
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/**
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* GstAudioResample:
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*
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* Opaque data structure.
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*/
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struct _GstAudioResample {
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GstBaseTransform element;
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/* <private> */
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gboolean need_discont;
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GstClockTime t0;
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guint64 in_offset0;
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guint64 out_offset0;
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guint64 samples_in;
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guint64 samples_out;
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guint64 num_gap_samples;
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guint64 num_nongap_samples;
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/* properties */
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GstAudioResamplerMethod method;
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gint quality;
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GstAudioResamplerFilterMode sinc_filter_mode;
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guint32 sinc_filter_auto_threshold;
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GstAudioResamplerFilterInterpolation sinc_filter_interpolation;
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/* state */
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GstAudioInfo in;
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GstAudioInfo out;
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GstAudioConverter *converter;
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};
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struct _GstAudioResampleClass {
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GstBaseTransformClass parent_class;
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};
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GType gst_audio_resample_get_type(void);
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G_END_DECLS
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#endif /* __AUDIO_RESAMPLE_H__ */
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