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__
29 #include <gst/base/gstqueuearray.h>
33 #define GST_TYPE_QUEUE2 \
34 (gst_queue2_get_type())
35 #define GST_QUEUE2(obj) \
36 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUEUE2,GstQueue2))
37 #define GST_QUEUE2_CLASS(klass) \
38 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE2,GstQueue2Class))
39 #define GST_IS_QUEUE2(obj) \
40 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUEUE2))
41 #define GST_IS_QUEUE2_CLASS(klass) \
42 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUEUE2))
43 #define GST_QUEUE2_CAST(obj) \
46 typedef struct _GstQueue2 GstQueue2;
47 typedef struct _GstQueue2Size GstQueue2Size;
48 typedef struct _GstQueue2Class GstQueue2Class;
49 typedef struct _GstQueue2Range GstQueue2Range;
51 /* used to keep track of sizes (current and max) */
60 struct _GstQueue2Range
64 guint64 offset; /* offset of range start in source */
65 guint64 rb_offset; /* offset of range start in ring buffer */
66 guint64 writing_pos; /* writing position in source */
67 guint64 rb_writing_pos; /* writing position in ring buffer */
68 guint64 reading_pos; /* reading position in source */
69 guint64 max_reading_pos; /* latest requested offset in source */
80 /* upstream size in bytes (if downstream is operating in pull mode) */
81 guint64 upstream_size;
83 /* segments to keep track of timestamps */
84 GstSegment sink_segment;
85 GstSegment src_segment;
87 /* Position of src/sink */
88 GstClockTime sinktime, srctime;
89 /* TRUE if either position needs to be recalculated */
90 gboolean sink_tainted, src_tainted;
91 /* Bitrates taken from tags */
92 guint sink_tags_bitrate;
93 guint src_tags_bitrate;
95 /* flowreturn when srcpad is paused */
96 GstFlowReturn srcresult;
97 GstFlowReturn sinkresult;
101 /* the queue of data we're keeping our hands on */
102 GstQueueArray *queue;
105 gboolean last_query; /* result of last serialized query */
106 GstQuery *last_handled_query;
108 GstQueue2Size cur_level; /* currently in the queue */
109 GstQueue2Size max_level; /* max. amount of data allowed in the queue */
110 gboolean use_buffering;
111 gboolean use_tags_bitrate;
112 gboolean use_bitrate_query;
113 gboolean use_rate_estimate;
114 GstClockTime buffering_interval;
115 guint downstream_bitrate; /* the bitrate reported by downstream */
117 /* low/high watermarks for buffering */
121 /* current buffering state */
122 gboolean is_buffering;
123 gint buffering_percent;
124 gint last_posted_buffering_percent;
126 /* for measuring input/output rates */
128 gboolean in_timer_started;
129 gdouble last_update_in_rates_elapsed;
130 gdouble last_in_elapsed;
132 gdouble byte_in_rate;
133 gdouble byte_in_period;
136 gboolean out_timer_started;
137 gdouble last_out_elapsed;
139 gdouble byte_out_rate;
141 GMutex qlock; /* lock for queue (vs object lock) */
142 gboolean waiting_add;
143 GCond item_add; /* signals buffers now available for reading */
144 gboolean waiting_del;
145 GCond item_del; /* signals space now available for writing */
147 /* temp location stuff */
148 gchar *temp_template;
149 gboolean temp_location_set;
150 gchar *temp_location;
151 gboolean temp_remove;
153 /* list of downloaded areas and the current area */
154 GstQueue2Range *ranges;
155 GstQueue2Range *current;
156 /* we need this to send the first new segment event of the stream
157 * because we can't save it on the file */
158 gboolean segment_event_received;
159 GstEvent *starting_segment;
162 GstEvent *stream_start_event;
164 guint64 ring_buffer_max_size;
165 guint8 * ring_buffer;
167 volatile gint downstream_may_block;
169 GstBufferingMode mode;
170 gint64 buffering_left;
173 gboolean percent_changed;
174 GMutex buffering_post_lock; /* assures only one posted at a time */
177 struct _GstQueue2Class
179 GstElementClass parent_class;
182 G_GNUC_INTERNAL GType gst_queue2_get_type (void);
186 #endif /* __GST_QUEUE2_H__ */