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This was used in queue2 when handling in coming serialized queries, but downloadbuffer just refuses serialized queries.
126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/* GStreamer
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* Copyright (C) 2014 Wim Taymans <wim.taymans@gmail.com>
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*
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* gstdownloadbuffer.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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_DOWNLOAD_BUFFER_H__
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#define __GST_DOWNLOAD_BUFFER_H__
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#include <gst/gst.h>
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#include <stdio.h>
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#include "gstsparsefile.h"
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G_BEGIN_DECLS
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#define GST_TYPE_DOWNLOAD_BUFFER \
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(gst_download_buffer_get_type())
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#define GST_DOWNLOAD_BUFFER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DOWNLOAD_BUFFER,GstDownloadBuffer))
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#define GST_DOWNLOAD_BUFFER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DOWNLOAD_BUFFER,GstDownloadBufferClass))
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#define GST_IS_DOWNLOAD_BUFFER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DOWNLOAD_BUFFER))
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#define GST_IS_DOWNLOAD_BUFFER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DOWNLOAD_BUFFER))
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#define GST_DOWNLOAD_BUFFER_CAST(obj) \
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((GstDownloadBuffer *)(obj))
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typedef struct _GstDownloadBuffer GstDownloadBuffer;
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typedef struct _GstDownloadBufferClass GstDownloadBufferClass;
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typedef struct _GstDownloadBufferSize GstDownloadBufferSize;
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/* used to keep track of sizes (current and max) */
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struct _GstDownloadBufferSize
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{
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guint bytes;
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guint64 time;
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};
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struct _GstDownloadBuffer
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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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/* flowreturn when srcpad is paused */
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GstFlowReturn srcresult;
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GstFlowReturn sinkresult;
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gboolean unexpected;
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/* the queue of data we're keeping our hands on */
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GstSparseFile *file;
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guint64 write_pos;
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guint64 read_pos;
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gboolean filling;
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GstDownloadBufferSize cur_level;
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GstDownloadBufferSize max_level;
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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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/* 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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guint64 waiting_offset;
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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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gint temp_fd;
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gboolean seeking;
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GstEvent *stream_start_event;
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GstEvent *segment_event;
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};
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struct _GstDownloadBufferClass
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{
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GstElementClass parent_class;
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};
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G_GNUC_INTERNAL GType gst_download_buffer_get_type (void);
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G_END_DECLS
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#endif /* __GST_DOWNLOAD_BUFFER_H__ */
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