1 /* GStreamer MPEG audio parser
2 * Copyright (C) 2006-2007 Jan Schmidt <thaytan@mad.scientist.com>
3 * Copyright (C) 2010 Mark Nauwelaerts <mnauw users sf net>
4 * Copyright (C) 2010 Nokia Corporation. All rights reserved.
5 * Contact: Stefan Kost <stefan.kost@nokia.com>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
23 #ifndef __GST_MPEG_AUDIO_PARSE_H__
24 #define __GST_MPEG_AUDIO_PARSE_H__
27 #include <gst/base/gstbaseparse.h>
31 #define GST_TYPE_MPEG_AUDIO_PARSE \
32 (gst_mpeg_audio_parse_get_type())
33 #define GST_MPEG_AUDIO_PARSE(obj) \
34 (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_MPEG_AUDIO_PARSE, GstMpegAudioParse))
35 #define GST_MPEG_AUDIO_PARSE_CLASS(klass) \
36 (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_MPEG_AUDIO_PARSE, GstMpegAudioParseClass))
37 #define GST_IS_MPEG_AUDIO_PARSE(obj) \
38 (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_MPEG_AUDIO_PARSE))
39 #define GST_IS_MPEG_AUDIO_PARSE_CLASS(klass) \
40 (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_MPEG_AUDIO_PARSE))
42 typedef struct _GstMpegAudioParse GstMpegAudioParse;
43 typedef struct _GstMpegAudioParseClass GstMpegAudioParseClass;
48 * The opaque GstMpegAudioParse object
50 struct _GstMpegAudioParse {
51 GstBaseParse baseparse;
59 GstClockTime max_bitreservoir;
60 /* samples per frame */
65 gboolean sent_codec_tag;
66 guint last_posted_bitrate;
67 gint last_posted_crc, last_crc;
68 guint last_posted_channel_mode, last_mode;
70 /* Bitrate from non-vbr headers */
76 GstClockTime xing_total_time;
78 /* percent -> filepos mapping */
79 guchar xing_seek_table[100];
80 /* filepos -> percent mapping */
81 guint16 xing_seek_table_inverse[256];
82 guint32 xing_vbr_scale;
87 GstClockTime vbri_total_time;
90 guint vbri_seek_points;
91 guint32 *vbri_seek_table;
95 guint32 encoder_delay;
96 guint32 encoder_padding;
100 * GstMpegAudioParseClass:
101 * @parent_class: Element parent class.
103 * The opaque GstMpegAudioParseClass data structure.
105 struct _GstMpegAudioParseClass {
106 GstBaseParseClass baseparse_class;
109 GType gst_mpeg_audio_parse_get_type (void);
113 #endif /* __GST_MPEG_AUDIO_PARSE_H__ */