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It is needed to update location properties and it was being lost on state changes, causing issues if the pipeline was to be reused
518 lines
16 KiB
C
518 lines
16 KiB
C
/* GStreamer
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* Copyright (C) 2011 Alessandro Decina <alessandro.d@gmail.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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* SECTION:element-hlssink
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*
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* HTTP Live Streaming sink/server
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch-1.0 videotestsrc is-live=true ! x264enc ! mpegtsmux ! hlssink max-files=5
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* ]|
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* </refsect2>
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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 "gsthlssink.h"
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#include <gst/pbutils/pbutils.h>
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#include <gst/video/video.h>
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#include <gio/gio.h>
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#include <glib/gstdio.h>
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#include <memory.h>
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GST_DEBUG_CATEGORY_STATIC (gst_hls_sink_debug);
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#define GST_CAT_DEFAULT gst_hls_sink_debug
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#define DEFAULT_LOCATION "segment%05d.ts"
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#define DEFAULT_PLAYLIST_LOCATION "playlist.m3u8"
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#define DEFAULT_PLAYLIST_ROOT NULL
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#define DEFAULT_MAX_FILES 10
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#define DEFAULT_TARGET_DURATION 15
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#define DEFAULT_PLAYLIST_LENGTH 5
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enum
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{
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PROP_0,
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PROP_LOCATION,
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PROP_PLAYLIST_LOCATION,
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PROP_PLAYLIST_ROOT,
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PROP_MAX_FILES,
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PROP_TARGET_DURATION,
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PROP_PLAYLIST_LENGTH
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};
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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#define gst_hls_sink_parent_class parent_class
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G_DEFINE_TYPE (GstHlsSink, gst_hls_sink, GST_TYPE_BIN);
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static void gst_hls_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * spec);
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static void gst_hls_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * spec);
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static void gst_hls_sink_handle_message (GstBin * bin, GstMessage * message);
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static GstPadProbeReturn gst_hls_sink_ghost_event_probe (GstPad * pad,
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GstPadProbeInfo * info, gpointer data);
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static GstPadProbeReturn gst_hls_sink_ghost_buffer_probe (GstPad * pad,
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GstPadProbeInfo * info, gpointer data);
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static void gst_hls_sink_reset (GstHlsSink * sink);
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static GstStateChangeReturn
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gst_hls_sink_change_state (GstElement * element, GstStateChange trans);
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static gboolean schedule_next_key_unit (GstHlsSink * sink);
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static void
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gst_hls_sink_dispose (GObject * object)
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{
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GstHlsSink *sink = GST_HLS_SINK_CAST (object);
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G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
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}
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static void
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gst_hls_sink_finalize (GObject * object)
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{
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GstHlsSink *sink = GST_HLS_SINK_CAST (object);
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g_free (sink->location);
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g_free (sink->playlist_location);
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g_free (sink->playlist_root);
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G_OBJECT_CLASS (parent_class)->finalize ((GObject *) sink);
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}
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static void
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gst_hls_sink_class_init (GstHlsSinkClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *element_class;
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GstBinClass *bin_class;
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gobject_class = (GObjectClass *) klass;
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element_class = GST_ELEMENT_CLASS (klass);
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bin_class = GST_BIN_CLASS (klass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_template));
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gst_element_class_set_static_metadata (element_class,
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"HTTP Live Streaming sink", "Sink", "HTTP Live Streaming sink",
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"Alessandro Decina <alessandro.d@gmail.com>");
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element_class->change_state = GST_DEBUG_FUNCPTR (gst_hls_sink_change_state);
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bin_class->handle_message = gst_hls_sink_handle_message;
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gobject_class->dispose = gst_hls_sink_dispose;
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gobject_class->finalize = gst_hls_sink_finalize;
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gobject_class->set_property = gst_hls_sink_set_property;
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gobject_class->get_property = gst_hls_sink_get_property;
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g_object_class_install_property (gobject_class, PROP_LOCATION,
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g_param_spec_string ("location", "File Location",
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"Location of the file to write", DEFAULT_LOCATION,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_PLAYLIST_LOCATION,
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g_param_spec_string ("playlist-location", "Playlist Location",
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"Location of the playlist to write", DEFAULT_PLAYLIST_LOCATION,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_PLAYLIST_ROOT,
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g_param_spec_string ("playlist-root", "Playlist Root",
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"Location of the playlist to write", DEFAULT_PLAYLIST_ROOT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MAX_FILES,
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g_param_spec_uint ("max-files", "Max files",
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"Maximum number of files to keep on disk. Once the maximum is reached,"
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"old files start to be deleted to make room for new ones.",
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0, G_MAXUINT, DEFAULT_MAX_FILES,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_TARGET_DURATION,
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g_param_spec_uint ("target-duration", "Target duration",
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"The target duration in seconds of a segment/file. "
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"(0 - disabled, useful for management of segment duration by the "
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"streaming server)",
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0, G_MAXUINT, DEFAULT_TARGET_DURATION,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_PLAYLIST_LENGTH,
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g_param_spec_uint ("playlist-length", "Playlist length",
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"Length of HLS playlist. To allow players to conform to section 6.3.3 "
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"of the HLS specification, this should be at least 3.",
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1, G_MAXUINT, DEFAULT_PLAYLIST_LENGTH,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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static void
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gst_hls_sink_init (GstHlsSink * sink)
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{
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GstPadTemplate *templ = gst_static_pad_template_get (&sink_template);
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sink->ghostpad = gst_ghost_pad_new_no_target_from_template ("sink", templ);
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gst_object_unref (templ);
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gst_element_add_pad (GST_ELEMENT_CAST (sink), sink->ghostpad);
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gst_pad_add_probe (sink->ghostpad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
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gst_hls_sink_ghost_event_probe, sink, NULL);
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gst_pad_add_probe (sink->ghostpad, GST_PAD_PROBE_TYPE_BUFFER,
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gst_hls_sink_ghost_buffer_probe, sink, NULL);
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sink->location = g_strdup (DEFAULT_LOCATION);
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sink->playlist_location = g_strdup (DEFAULT_PLAYLIST_LOCATION);
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sink->playlist_root = g_strdup (DEFAULT_PLAYLIST_ROOT);
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sink->playlist_length = DEFAULT_PLAYLIST_LENGTH;
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sink->max_files = DEFAULT_MAX_FILES;
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sink->target_duration = DEFAULT_TARGET_DURATION;
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/* haven't added a sink yet, make it is detected as a sink meanwhile */
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GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_FLAG_SINK);
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gst_hls_sink_reset (sink);
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}
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static void
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gst_hls_sink_reset (GstHlsSink * sink)
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{
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sink->index = 0;
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sink->count = 0;
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sink->timeout_id = 0;
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sink->last_running_time = 0;
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sink->waiting_fku = FALSE;
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gst_event_replace (&sink->force_key_unit_event, NULL);
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gst_segment_init (&sink->segment, GST_FORMAT_UNDEFINED);
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if (sink->playlist)
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gst_m3u8_playlist_free (sink->playlist);
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sink->playlist = gst_m3u8_playlist_new (6, sink->playlist_length, FALSE);
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}
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static gboolean
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gst_hls_sink_create_elements (GstHlsSink * sink)
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{
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GstPad *pad = NULL;
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GST_DEBUG_OBJECT (sink, "Creating internal elements");
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if (sink->elements_created)
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return TRUE;
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sink->multifilesink = gst_element_factory_make ("multifilesink", NULL);
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if (sink->multifilesink == NULL)
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goto missing_element;
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g_object_set (sink->multifilesink, "location", sink->location,
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"next-file", 3, "post-messages", TRUE, "max-files", sink->max_files,
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NULL);
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gst_bin_add (GST_BIN_CAST (sink), sink->multifilesink);
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pad = gst_element_get_static_pad (sink->multifilesink, "sink");
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gst_ghost_pad_set_target (GST_GHOST_PAD (sink->ghostpad), pad);
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gst_object_unref (pad);
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sink->elements_created = TRUE;
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return TRUE;
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missing_element:
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gst_element_post_message (GST_ELEMENT_CAST (sink),
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gst_missing_element_message_new (GST_ELEMENT_CAST (sink),
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"multifilesink"));
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GST_ELEMENT_ERROR (sink, CORE, MISSING_PLUGIN,
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(("Missing element '%s' - check your GStreamer installation."),
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"multifilesink"), (NULL));
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return FALSE;
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}
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static void
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gst_hls_sink_handle_message (GstBin * bin, GstMessage * message)
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{
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GstHlsSink *sink = GST_HLS_SINK_CAST (bin);
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switch (message->type) {
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case GST_MESSAGE_ELEMENT:
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{
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GFile *file;
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const char *filename, *title;
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char *playlist_content;
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GstClockTime running_time, duration;
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gboolean discont = FALSE;
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GError *error = NULL;
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gchar *entry_location;
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const GstStructure *structure;
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structure = gst_message_get_structure (message);
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if (strcmp (gst_structure_get_name (structure), "GstMultiFileSink"))
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break;
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filename = gst_structure_get_string (structure, "filename");
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gst_structure_get_clock_time (structure, "running-time", &running_time);
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duration = running_time - sink->last_running_time;
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sink->last_running_time = running_time;
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file = g_file_new_for_path (filename);
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title = "ciao";
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GST_INFO_OBJECT (sink, "COUNT %d", sink->index);
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if (sink->playlist_root == NULL)
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entry_location = g_path_get_basename (filename);
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else {
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gchar *name = g_path_get_basename (filename);
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entry_location = g_build_filename (sink->playlist_root, name, NULL);
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g_free (name);
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}
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gst_m3u8_playlist_add_entry (sink->playlist, entry_location, file,
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title, duration, sink->index, discont);
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g_free (entry_location);
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playlist_content = gst_m3u8_playlist_render (sink->playlist);
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g_file_set_contents (sink->playlist_location,
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playlist_content, -1, &error);
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g_free (playlist_content);
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/* multifilesink is starting a new file. It means that upstream sent a key
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* unit and we can schedule the next key unit now.
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*/
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sink->waiting_fku = FALSE;
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schedule_next_key_unit (sink);
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/* multifilesink is an internal implementation detail. If applications
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* need a notification, we should probably do our own message */
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GST_DEBUG_OBJECT (bin, "dropping message %" GST_PTR_FORMAT, message);
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gst_message_unref (message);
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message = NULL;
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break;
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}
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default:
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break;
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}
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if (message)
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GST_BIN_CLASS (parent_class)->handle_message (bin, message);
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}
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static GstStateChangeReturn
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gst_hls_sink_change_state (GstElement * element, GstStateChange trans)
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{
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GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
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GstHlsSink *sink = GST_HLS_SINK_CAST (element);
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switch (trans) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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if (!gst_hls_sink_create_elements (sink)) {
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return GST_STATE_CHANGE_FAILURE;
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}
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break;
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case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
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break;
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, trans);
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switch (trans) {
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case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
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break;
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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gst_hls_sink_reset (sink);
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break;
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case GST_STATE_CHANGE_READY_TO_NULL:
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gst_hls_sink_reset (sink);
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break;
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default:
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break;
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}
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return ret;
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}
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static void
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gst_hls_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstHlsSink *sink = GST_HLS_SINK_CAST (object);
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switch (prop_id) {
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case PROP_LOCATION:
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g_free (sink->location);
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sink->location = g_value_dup_string (value);
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if (sink->multifilesink)
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g_object_set (sink->multifilesink, "location", sink->location, NULL);
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break;
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case PROP_PLAYLIST_LOCATION:
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g_free (sink->playlist_location);
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sink->playlist_location = g_value_dup_string (value);
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break;
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case PROP_PLAYLIST_ROOT:
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g_free (sink->playlist_root);
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sink->playlist_root = g_value_dup_string (value);
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break;
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case PROP_MAX_FILES:
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sink->max_files = g_value_get_uint (value);
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if (sink->multifilesink) {
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g_object_set (sink->multifilesink, "location", sink->location,
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"next-file", 3, "post-messages", TRUE, "max-files", sink->max_files,
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NULL);
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}
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break;
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case PROP_TARGET_DURATION:
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sink->target_duration = g_value_get_uint (value);
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break;
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case PROP_PLAYLIST_LENGTH:
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sink->playlist_length = g_value_get_uint (value);
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sink->playlist->window_size = sink->playlist_length;
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_hls_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstHlsSink *sink = GST_HLS_SINK_CAST (object);
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switch (prop_id) {
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case PROP_LOCATION:
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g_value_set_string (value, sink->location);
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break;
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case PROP_PLAYLIST_LOCATION:
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g_value_set_string (value, sink->playlist_location);
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break;
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case PROP_PLAYLIST_ROOT:
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g_value_set_string (value, sink->playlist_root);
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break;
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case PROP_MAX_FILES:
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g_value_set_uint (value, sink->max_files);
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break;
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case PROP_TARGET_DURATION:
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g_value_set_uint (value, sink->target_duration);
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break;
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case PROP_PLAYLIST_LENGTH:
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g_value_set_uint (value, sink->playlist_length);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstPadProbeReturn
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gst_hls_sink_ghost_event_probe (GstPad * pad, GstPadProbeInfo * info,
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gpointer data)
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{
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GstHlsSink *sink = GST_HLS_SINK_CAST (data);
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GstEvent *event = gst_pad_probe_info_get_event (info);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEGMENT:
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{
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gst_event_copy_segment (event, &sink->segment);
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break;
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}
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case GST_EVENT_FLUSH_STOP:
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gst_segment_init (&sink->segment, GST_FORMAT_UNDEFINED);
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break;
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case GST_EVENT_CUSTOM_DOWNSTREAM:
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{
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GstClockTime timestamp;
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GstClockTime running_time, stream_time;
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gboolean all_headers;
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guint count;
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if (!gst_video_event_is_force_key_unit (event))
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break;
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gst_event_replace (&sink->force_key_unit_event, event);
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gst_video_event_parse_downstream_force_key_unit (event,
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×tamp, &stream_time, &running_time, &all_headers, &count);
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GST_INFO_OBJECT (sink, "setting index %d", count);
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sink->index = count;
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break;
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}
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default:
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break;
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}
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return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
static gboolean
|
|
schedule_next_key_unit (GstHlsSink * sink)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstClockTime running_time;
|
|
GstPad *sinkpad = gst_element_get_static_pad (GST_ELEMENT (sink), "sink");
|
|
|
|
if (sink->target_duration == 0)
|
|
/* target-duration == 0 means that the app schedules key units itself */
|
|
goto out;
|
|
|
|
running_time = sink->last_running_time + sink->target_duration * GST_SECOND;
|
|
GST_INFO_OBJECT (sink, "sending upstream force-key-unit, index %d "
|
|
"now %" GST_TIME_FORMAT " target %" GST_TIME_FORMAT,
|
|
sink->index + 1, GST_TIME_ARGS (sink->last_running_time),
|
|
GST_TIME_ARGS (running_time));
|
|
|
|
if (!(res = gst_pad_push_event (sinkpad,
|
|
gst_video_event_new_upstream_force_key_unit (running_time,
|
|
TRUE, sink->index + 1)))) {
|
|
GST_ERROR_OBJECT (sink, "Failed to push upstream force key unit event");
|
|
}
|
|
|
|
out:
|
|
/* mark as waiting for a fku event if the app schedules them or if we just
|
|
* successfully scheduled one
|
|
*/
|
|
sink->waiting_fku = res;
|
|
gst_object_unref (sinkpad);
|
|
return res;
|
|
}
|
|
|
|
|
|
static GstPadProbeReturn
|
|
gst_hls_sink_ghost_buffer_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
gpointer data)
|
|
{
|
|
GstHlsSink *sink = GST_HLS_SINK_CAST (data);
|
|
GstBuffer *buffer = gst_pad_probe_info_get_buffer (info);
|
|
GstClockTime timestamp;
|
|
|
|
timestamp = GST_BUFFER_TIMESTAMP (buffer);
|
|
if (sink->target_duration == 0 || !GST_CLOCK_TIME_IS_VALID (timestamp)
|
|
|| sink->waiting_fku)
|
|
return GST_PAD_PROBE_OK;
|
|
|
|
sink->last_running_time = gst_segment_to_running_time (&sink->segment,
|
|
GST_FORMAT_TIME, timestamp);
|
|
schedule_next_key_unit (sink);
|
|
return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
gboolean
|
|
gst_hls_sink_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_hls_sink_debug, "hlssink", 0, "HlsSink");
|
|
return gst_element_register (plugin, "hlssink", GST_RANK_NONE,
|
|
gst_hls_sink_get_type ());
|
|
}
|