diff options
| -rw-r--r-- | examples/stats/Makefile.am | 6 | ||||
| -rw-r--r-- | examples/stats/mp2ogg.c | 103 |
2 files changed, 109 insertions, 0 deletions
diff --git a/examples/stats/Makefile.am b/examples/stats/Makefile.am new file mode 100644 index 000000000..0f7d81cfe --- /dev/null +++ b/examples/stats/Makefile.am @@ -0,0 +1,6 @@ +noinst_PROGRAMS = mp2ogg + +LDADD = $(GST_LIBS) +AM_CFLAGS = $(GST_CFLAGS) + + diff --git a/examples/stats/mp2ogg.c b/examples/stats/mp2ogg.c new file mode 100644 index 000000000..273a349ac --- /dev/null +++ b/examples/stats/mp2ogg.c @@ -0,0 +1,103 @@ +/* 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 usefull 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_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_PAD_QUERY_POSITION, + &format, &position); + + /* get the total duration */ + gst_pad_query (enc_src, GST_PAD_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: %lld, dest avg birate: %lld, 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; +} |