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Original commit message from CVS: * docs/plugins/Makefile.am: * docs/plugins/gst-plugins-bad-plugins-docs.sgml: * docs/plugins/gst-plugins-bad-plugins-sections.txt: * docs/plugins/gst-plugins-bad-plugins.args: * docs/plugins/gst-plugins-bad-plugins.signals: * docs/plugins/inspect/plugin-bz2.xml: * docs/plugins/inspect/plugin-cdxaparse.xml: * docs/plugins/inspect/plugin-dtsdec.xml: * docs/plugins/inspect/plugin-faac.xml: * docs/plugins/inspect/plugin-faad.xml: * docs/plugins/inspect/plugin-filter.xml: * docs/plugins/inspect/plugin-freeze.xml: * docs/plugins/inspect/plugin-gsm.xml: * docs/plugins/inspect/plugin-gstrtpmanager.xml: * docs/plugins/inspect/plugin-h264parse.xml: * docs/plugins/inspect/plugin-modplug.xml: * docs/plugins/inspect/plugin-mpeg2enc.xml: * docs/plugins/inspect/plugin-musepack.xml: * docs/plugins/inspect/plugin-musicbrainz.xml: * docs/plugins/inspect/plugin-nsfdec.xml: * docs/plugins/inspect/plugin-replaygain.xml: * docs/plugins/inspect/plugin-soundtouch.xml: * docs/plugins/inspect/plugin-spcdec.xml: * docs/plugins/inspect/plugin-spectrum.xml: * docs/plugins/inspect/plugin-speed.xml: * docs/plugins/inspect/plugin-tta.xml: * docs/plugins/inspect/plugin-videosignal.xml: * docs/plugins/inspect/plugin-xingheader.xml: * docs/plugins/inspect/plugin-xvid.xml: * gst/filter/gstbpwsinc.c: * gst/filter/gstbpwsinc.h: * gst/filter/gstlpwsinc.c: * gst/filter/gstlpwsinc.h: Add docs for lpwsinc and bpwsinc and integrate them into the build system. While doing that also update all other docs via make update in docs/plugins.
84 lines
2.4 KiB
C
84 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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*
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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_BPWSINC_H__
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#define __GST_BPWSINC_H__
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#include "gstfilter.h"
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#include <gst/gst.h>
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#include <gst/audio/gstaudiofilter.h>
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G_BEGIN_DECLS
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#define GST_TYPE_BPWSINC \
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(gst_bpwsinc_get_type())
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#define GST_BPWSINC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BPWSINC,GstBPWSinc))
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#define GST_BPWSINC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BPWSINC,GstBPWSincClass))
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#define GST_IS_BPWSINC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BPWSINC))
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#define GST_IS_BPWSINC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BPWSINC))
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typedef struct _GstBPWSinc GstBPWSinc;
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typedef struct _GstBPWSincClass GstBPWSincClass;
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typedef void (*GstBPWSincProcessFunc) (GstBPWSinc *, guint8 *, guint8 *, guint);
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/**
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* GstBPWSinc:
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*
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* Opaque data structure.
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*/
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struct _GstBPWSinc {
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GstAudioFilter element;
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/* < private > */
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GstBPWSincProcessFunc process;
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gint mode;
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gint window;
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gdouble lower_frequency, upper_frequency;
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gint kernel_length; /* length of the filter kernel */
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gdouble *residue; /* buffer for left-over samples from previous buffer */
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gdouble *kernel;
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gboolean have_kernel;
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};
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struct _GstBPWSincClass {
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GstAudioFilterClass parent_class;
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};
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GType gst_bpwsinc_get_type (void);
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G_END_DECLS
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#endif /* __GST_BPWSINC_H__ */
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