author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 15:15:52 +0300 | |
changeset 8 | 4a7fac7dd34a |
permissions | -rw-r--r-- |
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/* -*- 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 <gst/gst_global.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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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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/* < private > */ |
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GMutex *lock; |
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}; |
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struct _GstAudioWSincLimitClass { |
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GstAudioFXBaseFIRFilterClass parent; |
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}; |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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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__ */ |