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ed03e8f8ab
Publish the playback offset for and duration into the splitmuxsink-fragment-closed bus message as each fragment finishes. These can be passed to splitmuxsrc via the 'add-fragment' signal to avoid splitmuxsrc measuring all files on startup Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7053>
125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/* GStreamer
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* Copyright (C) 2024 Jan Schmidt <jan@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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* This example creates a test recording using splitmuxsink,
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* listening for the fragment-closed messages from splitmuxsink
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* and writing a CSV file with the fragment offsets and durations
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <gst/gst.h>
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GMainLoop *loop;
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FILE *out_csv = NULL;
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static gboolean
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message_handler (GstBus * bus, GstMessage * message, gpointer data)
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{
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if (message->type == GST_MESSAGE_ELEMENT) {
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const GstStructure *s = gst_message_get_structure (message);
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const gchar *name = gst_structure_get_name (s);
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if (strcmp (name, "splitmuxsink-fragment-closed") == 0) {
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const gchar *fname = gst_structure_get_string (s, "location");
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GstClockTime start_offset, duration;
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if (!gst_structure_get_uint64 (s, "fragment-offset", &start_offset) ||
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!gst_structure_get_uint64 (s, "fragment-duration", &duration)) {
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g_assert_not_reached ();
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}
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fprintf (out_csv, "\"%s\",%" G_GUINT64_FORMAT ",%" G_GUINT64_FORMAT "\n",
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fname, start_offset, duration);
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}
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} else if (message->type == GST_MESSAGE_EOS) {
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g_main_loop_quit (loop);
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} else if (message->type == GST_MESSAGE_ERROR) {
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GError *err;
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gchar *debug_info;
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gst_message_parse_error (message, &err, &debug_info);
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g_printerr ("Error received from element %s: %s\n",
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GST_OBJECT_NAME (message->src), err->message);
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g_printerr ("Debugging information: %s\n",
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debug_info ? debug_info : "none");
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g_main_loop_quit (loop);
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}
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return TRUE;
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}
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int
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main (int argc, char *argv[])
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{
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GstElement *pipe;
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GstBus *bus;
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gst_init (&argc, &argv);
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if (argc < 3) {
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g_printerr
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("Usage: %s target_dir out.csv\n Pass splitmuxsink target directory for generated recording, and out.csv to receive the fragment info\n",
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argv[0]);
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return 1;
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}
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out_csv = fopen (argv[2], "w");
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if (out_csv == NULL) {
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g_printerr ("Failed to open output file %s", argv[2]);
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return 2;
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}
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GError *error = NULL;
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pipe =
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gst_parse_launch
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("videotestsrc num-buffers=300 ! video/x-raw,framerate=30/1 ! timeoverlay ! x264enc key-int-max=30 ! "
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"h264parse ! queue ! splitmuxsink name=sink "
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"audiotestsrc samplesperbuffer=1600 num-buffers=300 ! audio/x-raw,rate=48000 ! opusenc ! queue ! sink.audio_0 ",
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&error);
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if (pipe == NULL || error != NULL) {
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g_print ("Failed to create pipeline. Error %s\n", error->message);
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return 3;
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}
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GstElement *splitmuxsink = gst_bin_get_by_name (GST_BIN (pipe), "sink");
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/* Set the files glob on src */
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gchar *file_pattern = g_strdup_printf ("%s/test%%05d.mp4", argv[1]);
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g_object_set (splitmuxsink, "location", file_pattern, NULL);
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g_object_set (splitmuxsink, "max-size-time", GST_SECOND, NULL);
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gst_object_unref (splitmuxsink);
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bus = gst_element_get_bus (pipe);
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gst_bus_add_watch (bus, message_handler, NULL);
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gst_object_unref (bus);
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gst_element_set_state (pipe, GST_STATE_PLAYING);
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loop = g_main_loop_new (NULL, FALSE);
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g_main_loop_run (loop);
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fclose (out_csv);
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gst_element_set_state (pipe, GST_STATE_NULL);
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gst_object_unref (pipe);
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return 0;
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}
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