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160 lines
4.6 KiB
C
160 lines
4.6 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2003 Colin Walters <cwalters@gnome.org>
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* 2000,2005,2007 Wim Taymans <wim.taymans@gmail.com>
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* 2007 Thiago Sousa Santos <thiagoss@lcc.ufcg.edu.br>
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*
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* gstqueue2.h:
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_QUEUE2_H__
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#define __GST_QUEUE2_H__
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#include <gst/gst.h>
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#include <stdio.h>
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G_BEGIN_DECLS
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#define GST_TYPE_QUEUE2 \
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(gst_queue2_get_type())
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#define GST_QUEUE2(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUEUE2,GstQueue2))
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#define GST_QUEUE2_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE2,GstQueue2Class))
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#define GST_IS_QUEUE2(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUEUE2))
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#define GST_IS_QUEUE2_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUEUE2))
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#define GST_QUEUE2_CAST(obj) \
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((GstQueue2 *)(obj))
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typedef struct _GstQueue2 GstQueue2;
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typedef struct _GstQueue2Size GstQueue2Size;
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typedef struct _GstQueue2Class GstQueue2Class;
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typedef struct _GstQueue2Range GstQueue2Range;
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/* used to keep track of sizes (current and max) */
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struct _GstQueue2Size
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{
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guint buffers;
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guint bytes;
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guint64 time;
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guint64 rate_time;
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};
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struct _GstQueue2Range
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{
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GstQueue2Range *next;
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guint64 offset; /* offset of range start in source */
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guint64 rb_offset; /* offset of range start in ring buffer */
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guint64 writing_pos; /* writing position in source */
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guint64 rb_writing_pos; /* writing position in ring buffer */
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guint64 reading_pos; /* reading position in source */
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guint64 max_reading_pos; /* latest requested offset in source */
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};
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struct _GstQueue2
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{
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GstElement element;
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/*< private > */
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GstPad *sinkpad;
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GstPad *srcpad;
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/* upstream size in bytes (if downstream is operating in pull mode) */
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guint64 upstream_size;
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/* segments to keep track of timestamps */
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GstSegment sink_segment;
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GstSegment src_segment;
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/* Position of src/sink */
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GstClockTime sinktime, srctime;
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/* TRUE if either position needs to be recalculated */
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gboolean sink_tainted, src_tainted;
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/* flowreturn when srcpad is paused */
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GstFlowReturn srcresult;
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GstFlowReturn sinkresult;
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gboolean is_eos;
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gboolean unexpected;
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/* the queue of data we're keeping our hands on */
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GQueue *queue;
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GstQueue2Size cur_level; /* currently in the queue */
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GstQueue2Size max_level; /* max. amount of data allowed in the queue */
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gboolean use_buffering;
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gboolean use_rate_estimate;
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GstClockTime buffering_interval;
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gint low_percent; /* low/high watermarks for buffering */
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gint high_percent;
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/* current buffering state */
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gboolean is_buffering;
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gint buffering_percent;
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guint buffering_iteration;
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/* for measuring input/output rates */
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GTimer *in_timer;
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gboolean in_timer_started;
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gdouble last_in_elapsed;
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guint64 bytes_in;
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gdouble byte_in_rate;
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gdouble byte_in_period;
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GTimer *out_timer;
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gboolean out_timer_started;
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gdouble last_out_elapsed;
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guint64 bytes_out;
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gdouble byte_out_rate;
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GMutex *qlock; /* lock for queue (vs object lock) */
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gboolean waiting_add;
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GCond *item_add; /* signals buffers now available for reading */
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gboolean waiting_del;
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GCond *item_del; /* signals space now available for writing */
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/* temp location stuff */
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gchar *temp_template;
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gboolean temp_location_set;
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gchar *temp_location;
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gboolean temp_remove;
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FILE *temp_file;
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/* list of downloaded areas and the current area */
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GstQueue2Range *ranges;
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GstQueue2Range *current;
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/* we need this to send the first new segment event of the stream
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* because we can't save it on the file */
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gboolean segment_event_received;
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GstEvent *starting_segment;
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guint64 ring_buffer_max_size;
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guint8 * ring_buffer;
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};
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struct _GstQueue2Class
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{
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GstElementClass parent_class;
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};
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GType gst_queue2_get_type (void);
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G_END_DECLS
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#endif /* __GST_QUEUE2_H__ */
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