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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <>
* 2003 Colin Walters <>
* 2000,2005,2007 Wim Taymans <>
* 2007 Thiago Sousa Santos <>
* 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
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
#ifndef __GST_QUEUE2_H__
#define __GST_QUEUE2_H__
#include <gst/gst.h>
#include <stdio.h>
#define GST_TYPE_QUEUE2 \
#define GST_QUEUE2(obj) \
#define GST_QUEUE2_CLASS(klass) \
#define GST_IS_QUEUE2(obj) \
#define GST_IS_QUEUE2_CLASS(klass) \
#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; /* offset of range start in source */
guint64 rb_offset; /* offset of range start in ring buffer */
guint64 writing_pos; /* writing position in source */
guint64 rb_writing_pos; /* writing position in ring buffer */
guint64 reading_pos; /* reading position in source */
guint64 max_reading_pos; /* latest requested offset in source */
struct _GstQueue2
GstElement element;
/*< private > */
GstPad *sinkpad;
GstPad *srcpad;
/* upstream size in bytes (if downstream is operating in pull mode) */
guint64 upstream_size;
/* segments to keep track of timestamps */
GstSegment sink_segment;
GstSegment src_segment;
/* Position of src/sink */
GstClockTime sinktime, srctime;
/* TRUE if either position needs to be recalculated */
gboolean sink_tainted, src_tainted;
/* Bitrates taken from tags */
guint sink_tags_bitrate;
guint src_tags_bitrate;
/* 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;
GCond query_handled;
gboolean last_query; /* result of last serialized query */
GstQueue2Size cur_level; /* currently in the queue */
GstQueue2Size max_level; /* max. amount of data allowed in the queue */
gboolean use_buffering;
gboolean use_tags_bitrate;
gboolean use_rate_estimate;
GstClockTime buffering_interval;
/* low/high watermarks for buffering */
gint low_watermark;
gint high_watermark;
/* current buffering state */
gboolean is_buffering;
gint buffering_percent;
/* for measuring input/output rates */
GTimer *in_timer;
gboolean in_timer_started;
gdouble last_update_in_rates_elapsed;
gdouble last_in_elapsed;
guint64 bytes_in;
gdouble byte_in_rate;
gdouble byte_in_period;
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;
gboolean seeking;
GstEvent *stream_start_event;
guint64 ring_buffer_max_size;
guint8 * ring_buffer;
volatile gint downstream_may_block;
GstBufferingMode mode;
gint64 buffering_left;
gint avg_in;
gint avg_out;
gboolean percent_changed;
GMutex buffering_post_lock; /* assures only one posted at a time */
struct _GstQueue2Class
GstElementClass parent_class;
G_GNUC_INTERNAL GType gst_queue2_get_type (void);
#endif /* __GST_QUEUE2_H__ */