| /* 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., 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> |
| |
| 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; /* 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; |
| |
| /* 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_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; |
| |
| /* for measuring input/output rates */ |
| GTimer *in_timer; |
| gboolean in_timer_started; |
| 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); |
| |
| G_END_DECLS |
| |
| #endif /* __GST_QUEUE2_H__ */ |