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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <gst/gst.h>
/* This example app demonstartes the use of pad query and convert to
* get useful statistics about a plugin. In this case we monitor the
* compression status of mpeg audio to ogg vorbis transcoding.
*/
gint
main (gint argc, gchar * argv[])
{
GstElement *pipeline;
GError *error = NULL;
gchar *description;
GstElement *encoder, *decoder;
GstPad *dec_sink, *enc_src;
gst_init (&argc, &argv);
if (argc < 3) {
g_print ("usage: %s <inputfile> <outputfile>\n", argv[0]);
return -1;
}
description = g_strdup_printf ("filesrc location=\"%s\" ! mad name=decoder ! "
"vorbisenc name=encoder ! filesink location=\"%s\"", argv[1], argv[2]);
pipeline = GST_ELEMENT (gst_parse_launch (description, &error));
if (!pipeline) {
if (error)
g_print ("ERROR: pipeline could not be constructed: %s\n",
error->message);
else
g_print ("ERROR: pipeline could not be constructed\n");
return -1;
}
decoder = gst_bin_get_by_name (GST_BIN (pipeline), "decoder");
encoder = gst_bin_get_by_name (GST_BIN (pipeline), "encoder");
dec_sink = gst_element_get_pad (decoder, "sink");
enc_src = gst_element_get_pad (encoder, "src");
if (gst_element_set_state (pipeline,
GST_STATE_PLAYING) != GST_STATE_CHANGE_SUCCESS) {
g_print ("pipeline doesn't want to play\n");
return -1;
}
while (gst_bin_iterate (GST_BIN (pipeline))) {
gint64 position;
gint64 duration;
gint64 bitrate_enc, bitrate_dec;
GstFormat format;
format = GST_FORMAT_TIME;
/* get the position */
gst_pad_query (enc_src, GST_QUERY_POSITION, &format, &position);
/* get the total duration */
gst_pad_query (enc_src, GST_QUERY_TOTAL, &format, &duration);
format = GST_FORMAT_BYTES;
/* see how many bytes are genereated per 8 seconds (== bitrate) */
gst_pad_convert (enc_src, GST_FORMAT_TIME, 8 * GST_SECOND,
&format, &bitrate_enc);
gst_pad_convert (dec_sink, GST_FORMAT_TIME, 8 * GST_SECOND,
&format, &bitrate_dec);
g_print ("[%2dm %.2ds] of [%2dm %.2ds], "
"src avg bitrate: %" G_GINT64_FORMAT ", dest avg birate: %"
G_GINT64_FORMAT ", ratio [%02.2f] \r",
(gint) (position / (GST_SECOND * 60)),
(gint) (position / (GST_SECOND)) % 60,
(gint) (duration / (GST_SECOND * 60)),
(gint) (duration / (GST_SECOND)) % 60, bitrate_dec, bitrate_enc,
(gfloat) bitrate_dec / bitrate_enc);
}
g_print ("\n");
return 0;
}
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