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/* GStreamer
* Copyright (C) 2011 Andoni Morales Alastruey <ylatuya@gmail.com>
* Copyright (C) 2012 Smart TV Alliance
* Author: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>, Collabora Ltd.
*
* gstfragment.c:
*
* 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.
*/
#include <glib.h>
#include "gstdownloadrate.h"
static void
_gst_download_rate_check_remove_rates (GstDownloadRate * rate)
{
if (rate->max_length == 0)
return;
while (g_queue_get_length (&rate->queue) > rate->max_length) {
guint bitrate = GPOINTER_TO_UINT (g_queue_pop_head (&rate->queue));
rate->total -= bitrate;
}
}
void
gst_download_rate_init (GstDownloadRate * rate)
{
g_queue_init (&rate->queue);
g_mutex_init (&rate->mutex);
rate->total = 0;
rate->max_length = 0;
}
void
gst_download_rate_deinit (GstDownloadRate * rate)
{
gst_download_rate_clear (rate);
g_mutex_clear (&rate->mutex);
}
void
gst_download_rate_set_max_length (GstDownloadRate * rate, gint max_length)
{
g_mutex_lock (&rate->mutex);
rate->max_length = max_length;
_gst_download_rate_check_remove_rates (rate);
g_mutex_unlock (&rate->mutex);
}
gint
gst_download_rate_get_max_length (GstDownloadRate * rate)
{
guint ret;
g_mutex_lock (&rate->mutex);
ret = rate->max_length;
g_mutex_unlock (&rate->mutex);
return ret;
}
void
gst_download_rate_clear (GstDownloadRate * rate)
{
g_mutex_lock (&rate->mutex);
g_queue_clear (&rate->queue);
rate->total = 0;
g_mutex_unlock (&rate->mutex);
}
void
gst_download_rate_add_rate (GstDownloadRate * rate, guint bytes, guint64 time)
{
guint64 bitrate;
g_mutex_lock (&rate->mutex);
/* convert from bytes / nanoseconds to bits per second */
bitrate = G_GUINT64_CONSTANT (8000000000) * bytes / time;
g_queue_push_tail (&rate->queue, GUINT_TO_POINTER ((guint) bitrate));
rate->total += bitrate;
_gst_download_rate_check_remove_rates (rate);
g_mutex_unlock (&rate->mutex);
}
guint
gst_download_rate_get_current_rate (GstDownloadRate * rate)
{
guint ret;
g_mutex_lock (&rate->mutex);
if (g_queue_get_length (&rate->queue))
ret = rate->total / g_queue_get_length (&rate->queue);
else
ret = G_MAXUINT;
g_mutex_unlock (&rate->mutex);
return ret;
}
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