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Original commit message from CVS: * gst/audiofx/Makefile.am: * gst/audiofx/audiofxbasefirfilter.c: (gst_audio_fx_base_fir_filter_dispose), (gst_audio_fx_base_fir_filter_base_init), (gst_audio_fx_base_fir_filter_class_init), (gst_audio_fx_base_fir_filter_init), (gst_audio_fx_base_fir_filter_push_residue), (gst_audio_fx_base_fir_filter_setup), (gst_audio_fx_base_fir_filter_transform), (gst_audio_fx_base_fir_filter_start), (gst_audio_fx_base_fir_filter_stop), (gst_audio_fx_base_fir_filter_query), (gst_audio_fx_base_fir_filter_query_type), (gst_audio_fx_base_fir_filter_event), (gst_audio_fx_base_fir_filter_set_kernel): * gst/audiofx/audiofxbasefirfilter.h: * gst/audiofx/audiofxbaseiirfilter.c: Implement a base class for generic audio FIR filters. * gst/audiofx/audiowsincband.c: (gst_gst_audio_wsincband_mode_get_type), (gst_gst_audio_wsincband_window_get_type), (gst_audio_wsincband_base_init), (gst_audio_wsincband_class_init), (gst_audio_wsincband_init), (gst_audio_wsincband_build_kernel), (gst_audio_wsincband_setup), (gst_audio_wsincband_set_property), (gst_audio_wsincband_get_property): * gst/audiofx/audiowsincband.h: * gst/audiofx/audiowsinclimit.c: (gst_audio_wsinclimit_mode_get_type), (gst_audio_wsinclimit_window_get_type), (gst_audio_wsinclimit_base_init), (gst_audio_wsinclimit_class_init), (gst_audio_wsinclimit_init), (gst_audio_wsinclimit_build_kernel), (gst_audio_wsinclimit_setup), (gst_audio_wsinclimit_set_property), (gst_audio_wsinclimit_get_property): * gst/audiofx/audiowsinclimit.h: * tests/check/elements/audiowsincband.c: (GST_START_TEST): * tests/check/elements/audiowsinclimit.c: (GST_START_TEST): Use this new base class for audiowsincband and audiowsinclimit. Also cleanup both elements.
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/* -*- c-basic-offset: 2 -*-
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*
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* GStreamer
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* Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
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* 2006 Dreamlab Technologies Ltd. <mathis.hofer@dreamlab.net>
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* 2007-2009 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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*
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* this windowed sinc filter is taken from the freely downloadable DSP book,
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* "The Scientist and Engineer's Guide to Digital Signal Processing",
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* chapter 16
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* available at http://www.dspguide.com/
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*
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*/
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#ifndef __GST_AUDIO_WSINC_LIMIT_H__
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#define __GST_AUDIO_WSINC_LIMIT_H__
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#include <gst/gst.h>
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#include <gst/audio/gstaudiofilter.h>
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#include "audiofxbasefirfilter.h"
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G_BEGIN_DECLS
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#define GST_TYPE_AUDIO_WSINC_LIMIT \
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(gst_audio_wsinclimit_get_type())
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#define GST_AUDIO_WSINC_LIMIT(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_WSINC_LIMIT,GstAudioWSincLimit))
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#define GST_AUDIO_WSINC_LIMIT_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_WSINC_LIMIT,GstAudioWSincLimitClass))
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#define GST_IS_AUDIO_WSINC_LIMIT(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_WSINC_LIMIT))
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#define GST_IS_AUDIO_WSINC_LIMIT_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_WSINC_LIMIT))
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typedef struct _GstAudioWSincLimit GstAudioWSincLimit;
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typedef struct _GstAudioWSincLimitClass GstAudioWSincLimitClass;
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/**
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* GstAudioWSincLimit:
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*
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* Opaque data structure.
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*/
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struct _GstAudioWSincLimit {
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GstAudioFXBaseFIRFilter parent;
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/* < private > */
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gint mode;
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gint window;
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gfloat cutoff;
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gint kernel_length;
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};
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struct _GstAudioWSincLimitClass {
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GstAudioFXBaseFIRFilterClass parent;
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};
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GType gst_audio_wsinclimit_get_type (void);
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G_END_DECLS
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#endif /* __GST_AUDIO_WSINC_LIMIT_H__ */
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