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6611517af5
Sometimes we can get segment-done before we got async-done. If we waited for async-done only, the segment-done would be dropped and we would wait forever for it a few lines below.
146 lines
4.1 KiB
C
146 lines
4.1 KiB
C
/* GStreamer interactive test for accurate segment seeking
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* Copyright (C) 2014 Tim-Philipp Müller <tim centricular com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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/* Plays the provided file one second at a time using segment seeks.
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* Theoretically this should be just as smooth as if we played the
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* file from start to stop in one go, certainly without hickups.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gst/gst.h>
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#define SEGMENT_DURATION (1 * GST_SECOND)
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int
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main (int argc, char **argv)
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{
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GstElement *playbin;
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GstMessage *msg;
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gchar *uri;
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gint64 dur, start, stop;
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gboolean prerolled = FALSE;
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if (argc < 2) {
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g_printerr ("Usage: %s FILENAME\n", argv[0]);
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return -1;
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}
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gst_init (&argc, &argv);
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if (gst_uri_is_valid (argv[1]))
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uri = g_strdup (argv[1]);
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else
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uri = gst_filename_to_uri (argv[1], NULL);
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g_print ("uri: %s\n", uri);
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playbin = gst_element_factory_make ("playbin", NULL);
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g_object_set (playbin, "uri", uri, NULL);
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#if 0
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{
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GstElement *src;
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playbin = gst_parse_launch ("uridecodebin name=d ! queue ! "
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"filesink location=/tmp/raw1.data", NULL);
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src = gst_bin_get_by_name (GST_BIN (playbin), "d");
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g_object_set (src, "uri", uri, NULL);
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gst_object_unref (src);
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}
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#endif
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gst_element_set_state (playbin, GST_STATE_PAUSED);
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/* wait for preroll */
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msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (playbin),
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GST_CLOCK_TIME_NONE, GST_MESSAGE_ASYNC_DONE | GST_MESSAGE_ERROR);
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g_assert (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
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prerolled = TRUE;
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gst_message_unref (msg);
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if (!gst_element_query_duration (playbin, GST_FORMAT_TIME, &dur))
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g_error ("Failed to query duration!\n");
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g_print ("Duration: %" GST_TIME_FORMAT "\n", GST_TIME_ARGS (dur));
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start = 0;
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do {
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GstSeekFlags seek_flags;
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gboolean ret;
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gboolean segment_done = FALSE;
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seek_flags = GST_SEEK_FLAG_ACCURATE | GST_SEEK_FLAG_SEGMENT;
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if (start == 0) {
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prerolled = FALSE;
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seek_flags |= GST_SEEK_FLAG_FLUSH;
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}
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stop = start + SEGMENT_DURATION;
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g_print ("Segment: %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "\n",
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GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
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ret = gst_element_seek (playbin, 1.0, GST_FORMAT_TIME, seek_flags,
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GST_SEEK_TYPE_SET, start, GST_SEEK_TYPE_SET, stop);
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g_assert (ret);
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if (!prerolled) {
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while (!prerolled) {
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/* wait for preroll again */
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msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (playbin),
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GST_CLOCK_TIME_NONE, GST_MESSAGE_SEGMENT_DONE |
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GST_MESSAGE_ASYNC_DONE | GST_MESSAGE_ERROR);
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g_assert (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
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if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_SEGMENT_DONE) {
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segment_done = TRUE;
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} else {
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prerolled = TRUE;
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}
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gst_message_unref (msg);
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}
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gst_element_set_state (playbin, GST_STATE_PLAYING);
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}
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/* wait for end of segment if we didn't get it above already */
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if (!segment_done) {
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msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (playbin),
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GST_CLOCK_TIME_NONE, GST_MESSAGE_SEGMENT_DONE | GST_MESSAGE_ERROR);
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g_assert (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
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gst_message_unref (msg);
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}
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start = stop;
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}
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while (start < dur);
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gst_element_set_state (playbin, GST_STATE_NULL);
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gst_object_unref (playbin);
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return 0;
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}
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