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52c97834df
downloadbitrate keeps a short history of bitrates and helps tracking the current average download bitrate for mssdemux
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/* GStreamer
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* Copyright (C) 2011 Andoni Morales Alastruey <ylatuya@gmail.com>
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* Copyright (C) 2012 Smart TV Alliance
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* Author: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>, Collabora Ltd.
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*
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* gstfragment.c:
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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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#include <glib.h>
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#include "gstdownloadrate.h"
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static void
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_gst_download_rate_check_remove_rates (GstDownloadRate * rate)
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{
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if (rate->max_length == 0)
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return;
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while (g_queue_get_length (&rate->queue) > rate->max_length) {
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guint bitrate = GPOINTER_TO_UINT (g_queue_pop_head (&rate->queue));
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rate->total -= bitrate;
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}
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}
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void
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gst_download_rate_init (GstDownloadRate * rate)
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{
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g_queue_init (&rate->queue);
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g_static_mutex_init (&rate->mutex);
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rate->total = 0;
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rate->max_length = 0;
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}
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void
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gst_download_rate_deinit (GstDownloadRate * rate)
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{
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gst_download_rate_clear (rate);
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}
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void
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gst_download_rate_set_max_length (GstDownloadRate * rate, gint max_length)
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{
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g_static_mutex_lock (&rate->mutex);
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rate->max_length = max_length;
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_gst_download_rate_check_remove_rates (rate);
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g_static_mutex_unlock (&rate->mutex);
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}
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gint
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gst_download_rate_get_max_length (GstDownloadRate * rate)
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{
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guint ret;
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g_static_mutex_lock (&rate->mutex);
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ret = rate->max_length;
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g_static_mutex_unlock (&rate->mutex);
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return ret;
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}
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void
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gst_download_rate_clear (GstDownloadRate * rate)
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{
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g_static_mutex_lock (&rate->mutex);
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g_queue_clear (&rate->queue);
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rate->total = 0;
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g_static_mutex_unlock (&rate->mutex);
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}
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void
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gst_download_rate_add_rate (GstDownloadRate * rate, guint bytes, guint64 time)
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{
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guint64 bitrate;
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g_static_mutex_lock (&rate->mutex);
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/* convert from bytes / nanoseconds to bits per second */
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bitrate = G_GUINT64_CONSTANT (8000000000) * bytes / time;
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g_queue_push_tail (&rate->queue, GUINT_TO_POINTER ((guint) bitrate));
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rate->total += bitrate;
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_gst_download_rate_check_remove_rates (rate);
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g_static_mutex_unlock (&rate->mutex);
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}
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guint
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gst_download_rate_get_current_rate (GstDownloadRate * rate)
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{
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guint ret;
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g_static_mutex_lock (&rate->mutex);
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ret = rate->total / g_queue_get_length (&rate->queue);
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g_static_mutex_unlock (&rate->mutex);
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return ret;
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}
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