gstreamer/gst/mpegaudioparse/gstmpegaudioparse.h

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __MP3PARSE_H__
#define __MP3PARSE_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
#define GST_TYPE_MP3PARSE \
(gst_mp3parse_get_type())
#define GST_MP3PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MP3PARSE,GstMPEGAudioParse))
#define GST_MP3PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MP3PARSE,GstMPEGAudioParseClass))
#define GST_IS_MP3PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MP3PARSE))
#define GST_IS_MP3PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MP3PARSE))
typedef struct _GstMPEGAudioParse GstMPEGAudioParse;
typedef struct _GstMPEGAudioParseClass GstMPEGAudioParseClass;
typedef struct _MPEGAudioSeekEntry MPEGAudioSeekEntry;
typedef struct _MPEGAudioPendingAccurateSeek MPEGAudioPendingAccurateSeek;
struct _MPEGAudioSeekEntry {
gint64 byte;
GstClockTime timestamp;
};
struct _MPEGAudioPendingAccurateSeek {
GstSegment segment;
gint64 upstream_start;
GstClockTime timestamp_start;
};
struct _GstMPEGAudioParse {
GstElement element;
GstPad *sinkpad, *srcpad;
GstSegment segment;
GstClockTime next_ts;
gboolean discont;
/* Offset as supplied by incoming buffers */
gint64 cur_offset;
/* Upcoming timestamp given on an incoming buffer and
* the offset at which it becomes active */
GstClockTime pending_ts;
gint64 pending_offset;
/* Offset since the last newseg */
gint64 tracked_offset;
GstAdapter *adapter;
guint skip; /* number of frames to skip */
guint bit_rate; /* in kbps */
gint channels, rate, layer, version;
GstClockTime max_bitreservoir;
gint spf; /* Samples per frame */
gboolean resyncing; /* True when attempting to resync (stricter checks are
performed) */
gboolean sent_codec_tag;
/* VBR tracking */
guint avg_bitrate;
guint64 bitrate_sum;
guint frame_count;
guint last_posted_bitrate;
gint last_posted_crc;
guint last_posted_channel_mode;
/* Xing info */
guint32 xing_flags;
guint32 xing_frames;
GstClockTime xing_total_time;
guint32 xing_bytes;
/* percent -> filepos mapping */
guchar xing_seek_table[100];
/* filepos -> percent mapping */
guint16 xing_seek_table_inverse[256];
guint32 xing_vbr_scale;
guint xing_bitrate;
/* VBRI info */
guint32 vbri_frames;
GstClockTime vbri_total_time;
guint32 vbri_bytes;
guint vbri_bitrate;
guint vbri_seek_points;
guint32 *vbri_seek_table;
/* Accurate seeking */
GList *seek_table;
GMutex *pending_accurate_seeks_lock;
GSList *pending_accurate_seeks;
gboolean exact_position;
/* Track whether we're seekable (in BYTES format, if upstream operates in
* TIME format, we don't care about seekability and assume upstream handles
* it). The seek table for accurate seeking is not maintained if we're not
* seekable. */
gboolean seekable;
/* minimum distance between two index entries */
GstClockTimeDiff idx_interval;
/* pending segment */
GstEvent *pending_segment;
/* pending events */
GList *pending_events;
};
struct _GstMPEGAudioParseClass {
GstElementClass parent_class;
};
GType gst_mp3parse_get_type(void);
G_END_DECLS
#endif /* __MP3PARSE_H__ */