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c41faa3d8e
Original idea comes from Jyri Sarha ( http://lists.xiph.org/pipermail/speex-dev/2011-September/008243.html ). Patch was discovered by Branislav Katreniak ( branislav.katreniak@streamunlimited.com ) for StreamUnlimited ( http://streamunlimited.com/ ). Tests showed up to 5x speed increase in the resampler in the 44.1<->48kHz case. I added the sinc-filter-mode and sinc-filter-auto-threshold properties and the auto mode threshold tests, and adapted the code to GStreamer 1.0. Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
101 lines
2.6 KiB
C
101 lines
2.6 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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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#include "speex_resampler_wrapper.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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GstAudioInfo in;
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GstAudioInfo out;
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/* properties */
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gint quality;
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/* state */
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gboolean fp;
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gint width;
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gint channels;
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gint inrate;
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gint outrate;
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SpeexResamplerSincFilterMode sinc_filter_mode;
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guint32 sinc_filter_auto_threshold;
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guint8 *tmp_in;
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guint tmp_in_size;
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guint8 *tmp_out;
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guint tmp_out_size;
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SpeexResamplerState *state;
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const SpeexResampleFuncs *funcs;
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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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