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85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/* GStreamer AccurateRip (TM) audio checksumming element
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*
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* Copyright (C) 2012 Christophe Fergeau <teuf@gnome.org>
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*
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* Based on the GStreamer chromaprint audio fingerprinting element
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* Copyright (C) 2006 M. Derezynski
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* Copyright (C) 2008 Eric Buehl
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* Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
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* Copyright (C) 2011 Lukáš Lalinský <<user@hostname.org>>
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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 __GST_ACCURIP_H__
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#define __GST_ACCURIP_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include <gst/audio/gstaudiofilter.h>
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#include <gst/audio/audio.h>
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G_BEGIN_DECLS
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#define GST_TYPE_ACCURIP \
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(gst_accurip_get_type())
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#define GST_ACCURIP(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ACCURIP,GstAccurip))
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#define GST_ACCURIP_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ACCURIP,GstAccuripClass))
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#define GST_IS_ACCURIP(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ACCURIP))
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#define GST_IS_ACCURIP_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ACCURIP))
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#define GST_TAG_ACCURIP_CRC "accurip-crc"
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#define GST_TAG_ACCURIP_CRC_V2 "accurip-crcv2"
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typedef struct _GstAccurip GstAccurip;
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typedef struct _GstAccuripClass GstAccuripClass;
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/**
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* GstAccurip:
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*
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* Opaque #GstAccurip element structure
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*/
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struct _GstAccurip
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{
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GstAudioFilter element;
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/*< private >*/
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guint32 crc;
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guint32 crc_v2;
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guint64 num_samples;
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gboolean is_first;
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gboolean is_last;
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/* Needed when 'is_last' is true */
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guint32 *crcs_ring;
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guint32 *crcs_v2_ring;
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guint64 ring_samples;
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};
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struct _GstAccuripClass
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{
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GstAudioFilterClass parent_class;
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};
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GType gst_accurip_get_type (void);
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G_END_DECLS
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#endif /* __GST_ACCURIP_H__ */
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