2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2003 Colin Walters <cwalters@gnome.org>
4 * 2000,2005,2007 Wim Taymans <wim.taymans@gmail.com>
5 * 2007 Thiago Sousa Santos <thiagoss@lcc.ufcg.edu.br>
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
24 #ifndef __GST_QUEUE2_H__
25 #define __GST_QUEUE2_H__
32 #define GST_TYPE_QUEUE2 \
33 (gst_queue2_get_type())
34 #define GST_QUEUE2(obj) \
35 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUEUE2,GstQueue2))
36 #define GST_QUEUE2_CLASS(klass) \
37 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE2,GstQueue2Class))
38 #define GST_IS_QUEUE2(obj) \
39 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUEUE2))
40 #define GST_IS_QUEUE2_CLASS(klass) \
41 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUEUE2))
42 #define GST_QUEUE2_CAST(obj) \
45 typedef struct _GstQueue2 GstQueue2;
46 typedef struct _GstQueue2Size GstQueue2Size;
47 typedef struct _GstQueue2Class GstQueue2Class;
48 typedef struct _GstQueue2Range GstQueue2Range;
50 /* used to keep track of sizes (current and max) */
59 struct _GstQueue2Range
63 guint64 offset; /* offset of range start in source */
64 guint64 rb_offset; /* offset of range start in ring buffer */
65 guint64 writing_pos; /* writing position in source */
66 guint64 rb_writing_pos; /* writing position in ring buffer */
67 guint64 reading_pos; /* reading position in source */
68 guint64 max_reading_pos; /* latest requested offset in source */
79 /* upstream size in bytes (if downstream is operating in pull mode) */
80 guint64 upstream_size;
82 /* segments to keep track of timestamps */
83 GstSegment sink_segment;
84 GstSegment src_segment;
86 /* Position of src/sink */
87 GstClockTime sinktime, srctime;
88 /* TRUE if either position needs to be recalculated */
89 gboolean sink_tainted, src_tainted;
90 /* Bitrates taken from tags */
91 guint sink_tags_bitrate;
92 guint src_tags_bitrate;
94 /* flowreturn when srcpad is paused */
95 GstFlowReturn srcresult;
96 GstFlowReturn sinkresult;
100 /* the queue of data we're keeping our hands on */
104 gboolean last_query; /* result of last serialized query */
105 GstQuery *last_handled_query;
107 GstQueue2Size cur_level; /* currently in the queue */
108 GstQueue2Size max_level; /* max. amount of data allowed in the queue */
109 gboolean use_buffering;
110 gboolean use_tags_bitrate;
111 gboolean use_rate_estimate;
112 GstClockTime buffering_interval;
114 /* low/high watermarks for buffering */
118 /* current buffering state */
119 gboolean is_buffering;
120 gint buffering_percent;
122 /* for measuring input/output rates */
124 gboolean in_timer_started;
125 gdouble last_update_in_rates_elapsed;
126 gdouble last_in_elapsed;
128 gdouble byte_in_rate;
129 gdouble byte_in_period;
132 gboolean out_timer_started;
133 gdouble last_out_elapsed;
135 gdouble byte_out_rate;
137 GMutex qlock; /* lock for queue (vs object lock) */
138 gboolean waiting_add;
139 GCond item_add; /* signals buffers now available for reading */
140 gboolean waiting_del;
141 GCond item_del; /* signals space now available for writing */
143 /* temp location stuff */
144 gchar *temp_template;
145 gboolean temp_location_set;
146 gchar *temp_location;
147 gboolean temp_remove;
149 /* list of downloaded areas and the current area */
150 GstQueue2Range *ranges;
151 GstQueue2Range *current;
152 /* we need this to send the first new segment event of the stream
153 * because we can't save it on the file */
154 gboolean segment_event_received;
155 GstEvent *starting_segment;
158 GstEvent *stream_start_event;
160 guint64 ring_buffer_max_size;
161 guint8 * ring_buffer;
163 volatile gint downstream_may_block;
165 GstBufferingMode mode;
166 gint64 buffering_left;
169 gboolean percent_changed;
170 GMutex buffering_post_lock; /* assures only one posted at a time */
173 struct _GstQueue2Class
175 GstElementClass parent_class;
178 G_GNUC_INTERNAL GType gst_queue2_get_type (void);
182 #endif /* __GST_QUEUE2_H__ */