gstreamer/subprojects/gst-plugins-good/tests/icles/test-segment-seeks.c

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/* GStreamer interactive test for accurate segment seeking
* Copyright (C) 2014 Tim-Philipp Müller <tim centricular com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
/* Plays the provided file one second at a time using segment seeks.
* Theoretically this should be just as smooth as if we played the
* file from start to stop in one go, certainly without hickups.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gst/gst.h>
#define SEGMENT_DURATION (1 * GST_SECOND)
int
main (int argc, char **argv)
{
GstElement *playbin;
GstMessage *msg;
gchar *uri;
gint64 dur, start, stop;
gboolean prerolled = FALSE;
if (argc < 2) {
g_printerr ("Usage: %s FILENAME\n", argv[0]);
return -1;
}
gst_init (&argc, &argv);
if (gst_uri_is_valid (argv[1]))
uri = g_strdup (argv[1]);
else
uri = gst_filename_to_uri (argv[1], NULL);
g_print ("uri: %s\n", uri);
playbin = gst_element_factory_make ("playbin", NULL);
g_object_set (playbin, "uri", uri, NULL);
#if 0
{
GstElement *src;
playbin = gst_parse_launch ("uridecodebin name=d ! queue ! "
"filesink location=/tmp/raw1.data", NULL);
src = gst_bin_get_by_name (GST_BIN (playbin), "d");
g_object_set (src, "uri", uri, NULL);
gst_object_unref (src);
}
#endif
gst_element_set_state (playbin, GST_STATE_PAUSED);
/* wait for preroll */
msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (playbin),
GST_CLOCK_TIME_NONE, GST_MESSAGE_ASYNC_DONE | GST_MESSAGE_ERROR);
g_assert (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
prerolled = TRUE;
gst_message_unref (msg);
if (!gst_element_query_duration (playbin, GST_FORMAT_TIME, &dur))
g_error ("Failed to query duration!\n");
g_print ("Duration: %" GST_TIME_FORMAT "\n", GST_TIME_ARGS (dur));
start = 0;
do {
GstSeekFlags seek_flags;
gboolean ret;
gboolean segment_done = FALSE;
seek_flags = GST_SEEK_FLAG_ACCURATE | GST_SEEK_FLAG_SEGMENT;
if (start == 0) {
prerolled = FALSE;
seek_flags |= GST_SEEK_FLAG_FLUSH;
}
stop = start + SEGMENT_DURATION;
g_print ("Segment: %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "\n",
GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
ret = gst_element_seek (playbin, 1.0, GST_FORMAT_TIME, seek_flags,
GST_SEEK_TYPE_SET, start, GST_SEEK_TYPE_SET, stop);
g_assert (ret);
if (!prerolled) {
while (!prerolled) {
/* wait for preroll again */
msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (playbin),
GST_CLOCK_TIME_NONE, GST_MESSAGE_SEGMENT_DONE |
GST_MESSAGE_ASYNC_DONE | GST_MESSAGE_ERROR);
g_assert (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_SEGMENT_DONE) {
segment_done = TRUE;
} else {
prerolled = TRUE;
}
gst_message_unref (msg);
}
gst_element_set_state (playbin, GST_STATE_PLAYING);
}
/* wait for end of segment if we didn't get it above already */
if (!segment_done) {
msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (playbin),
GST_CLOCK_TIME_NONE, GST_MESSAGE_SEGMENT_DONE | GST_MESSAGE_ERROR);
g_assert (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
gst_message_unref (msg);
}
start = stop;
}
while (start < dur);
gst_element_set_state (playbin, GST_STATE_NULL);
gst_object_unref (playbin);
return 0;
}