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/* GStreamer AccurateRip (TM) audio checksumming element
*
* Copyright (C) 2012 Christophe Fergeau <teuf@gnome.org>
*
* Based on the GStreamer chromaprint audio fingerprinting element
* Copyright (C) 2006 M. Derezynski
* Copyright (C) 2008 Eric Buehl
* Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
* Copyright (C) 2011 Lukáš Lalinský <<user@hostname.org>>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_ACCURIP_H__
#define __GST_ACCURIP_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/audio/gstaudiofilter.h>
#include <gst/audio/audio.h>
G_BEGIN_DECLS
#define GST_TYPE_ACCURIP \
(gst_accurip_get_type())
#define GST_ACCURIP(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ACCURIP,GstAccurip))
#define GST_ACCURIP_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ACCURIP,GstAccuripClass))
#define GST_IS_ACCURIP(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ACCURIP))
#define GST_IS_ACCURIP_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ACCURIP))
#define GST_TAG_ACCURIP_CRC "accurip-crc"
#define GST_TAG_ACCURIP_CRC_V2 "accurip-crcv2"
typedef struct _GstAccurip GstAccurip;
typedef struct _GstAccuripClass GstAccuripClass;
/**
* GstAccurip:
*
* Opaque #GstAccurip element structure
*/
struct _GstAccurip
{
GstAudioFilter element;
/*< private >*/
guint32 crc;
guint32 crc_v2;
guint64 num_samples;
gboolean is_first;
gboolean is_last;
/* Needed when 'is_last' is true */
guint32 *crcs_ring;
guint32 *crcs_v2_ring;
guint64 ring_samples;
};
struct _GstAccuripClass
{
GstAudioFilterClass parent_class;
};
GType gst_accurip_get_type (void);
G_END_DECLS
#endif /* __GST_ACCURIP_H__ */
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