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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2003 Colin Walters <cwalters@gnome.org>
* 2000,2005,2007 Wim Taymans <wim.taymans@gmail.com>
* 2007 Thiago Sousa Santos <thiagoss@lcc.ufcg.edu.br>
*
* gstqueue2.h:
*
* 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 __GST_QUEUE2_H__
#define __GST_QUEUE2_H__
#include <gst/gst.h>
#include <stdio.h>
G_BEGIN_DECLS
#define GST_TYPE_QUEUE2 \
(gst_queue2_get_type())
#define GST_QUEUE2(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUEUE2,GstQueue2))
#define GST_QUEUE2_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE2,GstQueue2Class))
#define GST_IS_QUEUE2(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUEUE2))
#define GST_IS_QUEUE2_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUEUE2))
#define GST_QUEUE2_CAST(obj) \
((GstQueue2 *)(obj))
typedef struct _GstQueue2 GstQueue2;
typedef struct _GstQueue2Size GstQueue2Size;
typedef struct _GstQueue2Class GstQueue2Class;
typedef struct _GstQueue2Range GstQueue2Range;
/* used to keep track of sizes (current and max) */
struct _GstQueue2Size
{
guint buffers;
guint bytes;
guint64 time;
guint64 rate_time;
};
struct _GstQueue2Range
{
GstQueue2Range *next;
guint64 offset;
guint64 writing_pos;
guint64 reading_pos;
guint64 max_reading_pos;
};
struct _GstQueue2
{
GstElement element;
/*< private > */
GstPad *sinkpad;
GstPad *srcpad;
/* segments to keep track of timestamps */
GstSegment sink_segment;
GstSegment src_segment;
/* flowreturn when srcpad is paused */
GstFlowReturn srcresult;
GstFlowReturn sinkresult;
gboolean is_eos;
gboolean unexpected;
/* the queue of data we're keeping our hands on */
GQueue *queue;
GstQueue2Size cur_level; /* currently in the queue */
GstQueue2Size max_level; /* max. amount of data allowed in the queue */
gboolean use_buffering;
gboolean use_rate_estimate;
GstClockTime buffering_interval;
gint low_percent; /* low/high watermarks for buffering */
gint high_percent;
/* current buffering state */
gboolean is_buffering;
gint buffering_percent;
guint buffering_iteration;
/* for measuring input/output rates */
GTimer *in_timer;
gboolean in_timer_started;
gdouble last_in_elapsed;
guint64 bytes_in;
gdouble byte_in_rate;
GTimer *out_timer;
gboolean out_timer_started;
gdouble last_out_elapsed;
guint64 bytes_out;
gdouble byte_out_rate;
GMutex *qlock; /* lock for queue (vs object lock) */
gboolean waiting_add;
GCond *item_add; /* signals buffers now available for reading */
gboolean waiting_del;
GCond *item_del; /* signals space now available for writing */
/* temp location stuff */
gchar *temp_template;
gboolean temp_location_set;
gchar *temp_location;
gboolean temp_remove;
FILE *temp_file;
/* list of downloaded areas and the current area */
GstQueue2Range *ranges;
GstQueue2Range *current;
/* we need this to send the first new segment event of the stream
* because we can't save it on the file */
gboolean segment_event_received;
GstEvent *starting_segment;
};
struct _GstQueue2Class
{
GstElementClass parent_class;
};
GType gst_queue2_get_type (void);
G_END_DECLS
#endif /* __GST_QUEUE2_H__ */