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0a49b93ade
Code using the push_loop_thread (using for sending seeks) assumes that the thread was properly started, except that this isn't always true and the thread might not have completely started. Instead wait for the thread to properly start before doing anything else.
227 lines
6.8 KiB
C
227 lines
6.8 KiB
C
/* GStreamer
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* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
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*
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* gstoggdemux.c: ogg stream demuxer
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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_OGG_DEMUX_H__
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#define __GST_OGG_DEMUX_H__
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#include <ogg/ogg.h>
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#include <gst/gst.h>
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#include <gst/base/gstflowcombiner.h>
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#include "gstoggstream.h"
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G_BEGIN_DECLS
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#define GST_TYPE_OGG_PAD (gst_ogg_pad_get_type())
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#define GST_OGG_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_PAD, GstOggPad))
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#define GST_OGG_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_PAD, GstOggPad))
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#define GST_IS_OGG_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_PAD))
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#define GST_IS_OGG_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_PAD))
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typedef struct _GstOggPad GstOggPad;
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typedef struct _GstOggPadClass GstOggPadClass;
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#define GST_TYPE_OGG_DEMUX (gst_ogg_demux_get_type())
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#define GST_OGG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_DEMUX, GstOggDemux))
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#define GST_OGG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_DEMUX, GstOggDemux))
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#define GST_IS_OGG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_DEMUX))
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#define GST_IS_OGG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_DEMUX))
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GType gst_ogg_demux_get_type (void);
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typedef struct _GstOggDemux GstOggDemux;
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typedef struct _GstOggDemuxClass GstOggDemuxClass;
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typedef struct _GstOggChain GstOggChain;
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/* all information needed for one ogg chain (relevant for chained bitstreams) */
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struct _GstOggChain
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{
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GstOggDemux *ogg;
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gint64 offset; /* starting offset of chain */
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gint64 end_offset; /* end offset of chain */
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gint64 bytes; /* number of bytes */
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gboolean have_bos;
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GArray *streams;
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GstClockTime total_time; /* the total time of this chain, this is the MAX of
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the totals of all streams */
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GstClockTime begin_time; /* when this chain starts in the stream */
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GstClockTime segment_start; /* the timestamp of the first sample, this is the MIN of
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the start times of all streams. */
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GstClockTime segment_stop; /* the timestamp of the last page, this is the MAX of the
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streams. */
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};
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/* all information needed for one ogg stream */
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struct _GstOggPad
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{
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GstPad pad; /* subclass GstPad */
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gboolean have_type;
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GstOggChain *chain; /* the chain we are part of */
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GstOggDemux *ogg; /* the ogg demuxer we are part of */
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GstOggStream map;
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gint64 packetno;
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gint64 current_granule;
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gint64 prev_granule;
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gint64 keyframe_granule;
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GstClockTime start_time; /* the timestamp of the first sample */
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gint64 first_granule; /* the granulepos of first page == first sample in next page */
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GstClockTime first_time; /* the timestamp of the second page or granuletime of first page */
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GstClockTime position; /* position when last push occured; used to detect when we
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* need to send a newsegment update event for sparse streams */
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GList *continued;
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gboolean discont;
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GstFlowReturn last_ret; /* last return of _pad_push() */
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gboolean is_eos;
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gboolean added;
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/* push mode seeking */
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GstClockTime push_kf_time;
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GstClockTime push_sync_time;
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};
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struct _GstOggPadClass
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{
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GstPadClass parent_class;
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};
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/**
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* GstOggDemux:
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*
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* The ogg demuxer object structure.
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*/
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struct _GstOggDemux
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{
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GstElement element;
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GstPad *sinkpad;
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GstFlowCombiner *flowcombiner;
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gint64 length;
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gint64 read_offset;
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gint64 offset;
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gboolean pullmode;
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gboolean running;
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gboolean have_group_id;
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guint group_id;
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gboolean need_chains;
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gboolean resync;
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/* keep track of how large pages and packets are,
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useful for skewing when seeking */
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guint64 max_packet_size, max_page_size;
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gboolean check_index_overflow;
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/* state */
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GMutex chain_lock; /* we need the lock to protect the chains */
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GArray *chains; /* list of chains we know */
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GstClockTime total_time;
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gint bitrate; /* bitrate of the current chain */
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GstOggChain *current_chain;
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GstOggChain *building_chain;
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/* playback start/stop positions */
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GstSegment segment;
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guint32 seqnum;
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GstEvent *newsegment; /* pending newsegment to be sent from _loop */
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/* annodex stuff */
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gint64 basetime;
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gint64 prestime;
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/* push mode seeking support */
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GMutex push_lock; /* we need the lock to protect the push mode variables */
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gint64 push_byte_offset; /* where were are at in the stream, in bytes */
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gint64 push_byte_length; /* length in bytes of the stream, -1 if unknown */
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GstClockTime push_time_length; /* length in time of the stream */
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GstClockTime push_start_time; /* start time of the stream */
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GstClockTime push_time_offset; /* where were are at in the stream, in time */
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enum { PUSH_PLAYING, PUSH_DURATION, PUSH_BISECT1, PUSH_LINEAR1, PUSH_BISECT2, PUSH_LINEAR2 } push_state;
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GstClockTime push_seek_time_original_target;
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GstClockTime push_seek_time_original_stop;
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GstClockTime push_seek_time_target;
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gint64 push_last_seek_offset;
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GstClockTime push_last_seek_time;
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gint64 push_offset0, push_offset1; /* bisection search offset bounds */
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GstClockTime push_time0, push_time1; /* bisection search time bounds */
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double push_seek_rate;
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GstSeekFlags push_seek_flags;
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GstEvent *push_mode_seek_delayed_event;
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gboolean push_disable_seeking;
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gboolean seek_secant;
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gboolean seek_undershot;
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GstClockTime push_prev_seek_time;
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gint push_bisection_steps[2];
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gint stats_bisection_steps[2];
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gint stats_bisection_max_steps[2];
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gint stats_nbisections;
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/* ogg stuff */
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ogg_sync_state sync;
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long chunk_size;
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/* Seek events set up by the streaming thread in push mode */
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GstEvent *seek_event;
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GThread *seek_event_thread;
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GMutex seek_event_mutex;
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GCond seek_event_cond;
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gboolean seek_event_thread_stop;
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gboolean seek_thread_started;
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GCond thread_started_cond;
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guint32 seek_event_drop_till;
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};
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struct _GstOggDemuxClass
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{
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GstElementClass parent_class;
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};
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gboolean gst_ogg_demux_plugin_init (GstPlugin * plugin);
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G_END_DECLS
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#endif /* __GST_OGG_DEMUX_H__ */
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