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