mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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374 lines
11 KiB
C
374 lines
11 KiB
C
/* GStreamer
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* Copyright (C) 2018, Collabora Ltd.
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* Copyright (C) 2018, SK Telecom, Co., Ltd.
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* Author: Jeongseok Kim <jeongseok.kim@sk.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-srtsink
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* @title: srtsink
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*
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* srtsink is a network sink that sends [SRT](http://www.srtalliance.org/)
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* packets to the network.
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*
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* ## Examples</title>
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*
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* |[
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* gst-launch-1.0 -v audiotestsrc ! srtsink uri=srt://host
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* ]| This pipeline shows how to serve SRT packets through the default port.
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*
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* |[
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* gst-launch-1.0 -v audiotestsrc ! srtsink uri=srt://:port
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* ]| This pipeline shows how to wait SRT callers.
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*
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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 "gstsrtsink.h"
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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_CAT_DEFAULT gst_debug_srt_sink
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GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
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enum
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{
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SIG_CALLER_ADDED,
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SIG_CALLER_REMOVED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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static void gst_srt_sink_uri_handler_init (gpointer g_iface,
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gpointer iface_data);
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static gchar *gst_srt_sink_uri_get_uri (GstURIHandler * handler);
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static gboolean gst_srt_sink_uri_set_uri (GstURIHandler * handler,
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const gchar * uri, GError ** error);
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#define gst_srt_sink_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstSRTSink, gst_srt_sink,
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GST_TYPE_BASE_SINK,
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G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_srt_sink_uri_handler_init)
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "srtsink", 0, "SRT Sink"));
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static void
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gst_srt_sink_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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GstSRTSink *self = GST_SRT_SINK (object);
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if (!gst_srt_object_set_property_helper (self->srtobject, prop_id, value,
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pspec)) {
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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gst_srt_sink_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstSRTSink *self = GST_SRT_SINK (object);
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if (!gst_srt_object_get_property_helper (self->srtobject, prop_id, value,
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pspec)) {
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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gst_srt_sink_finalize (GObject * object)
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{
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GstSRTSink *self = GST_SRT_SINK (object);
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g_clear_object (&self->cancellable);
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gst_srt_object_destroy (self->srtobject);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_srt_sink_init (GstSRTSink * self)
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{
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self->srtobject = gst_srt_object_new (GST_ELEMENT (self));
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self->cancellable = g_cancellable_new ();
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gst_srt_object_set_uri (self->srtobject, GST_SRT_DEFAULT_URI, NULL);
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}
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static gboolean
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gst_srt_sink_start (GstBaseSink * bsink)
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{
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GstSRTSink *self = GST_SRT_SINK (bsink);
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GstSRTConnectionMode connection_mode = GST_SRT_CONNECTION_MODE_NONE;
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GError *error = NULL;
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gboolean ret = FALSE;
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gst_structure_get_enum (self->srtobject->parameters, "mode",
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GST_TYPE_SRT_CONNECTION_MODE, (gint *) & connection_mode);
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ret = gst_srt_object_open (self->srtobject, self->cancellable, &error);
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if (!ret) {
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/* ensure error is posted since state change will fail */
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GST_ELEMENT_ERROR (self, RESOURCE, OPEN_WRITE, (NULL),
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("Failed to open SRT: %s", error->message));
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g_clear_error (&error);
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}
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return ret;
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}
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static gboolean
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gst_srt_sink_stop (GstBaseSink * bsink)
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{
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GstSRTSink *self = GST_SRT_SINK (bsink);
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gst_srt_object_close (self->srtobject);
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return TRUE;
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}
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static GstFlowReturn
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gst_srt_sink_render (GstBaseSink * sink, GstBuffer * buffer)
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{
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GstSRTSink *self = GST_SRT_SINK (sink);
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GstFlowReturn ret = GST_FLOW_OK;
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GstMapInfo info;
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GError *error = NULL;
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if (g_cancellable_is_cancelled (self->cancellable)) {
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ret = GST_FLOW_FLUSHING;
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}
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if (self->headers && GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_HEADER)) {
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GST_DEBUG_OBJECT (self, "Have streamheaders,"
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" ignoring header %" GST_PTR_FORMAT, buffer);
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return GST_FLOW_OK;
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}
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if (!gst_buffer_map (buffer, &info, GST_MAP_READ)) {
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GST_ELEMENT_ERROR (self, RESOURCE, READ,
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("Could not map the input stream"), (NULL));
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return GST_FLOW_ERROR;
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}
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if (gst_srt_object_write (self->srtobject, self->headers, &info,
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self->cancellable, &error) < 0) {
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ret = GST_FLOW_ERROR;
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}
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gst_buffer_unmap (buffer, &info);
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GST_TRACE_OBJECT (self, "sending buffer %p, offset %"
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G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT
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", timestamp %" GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT
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", size %" G_GSIZE_FORMAT,
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buffer, GST_BUFFER_OFFSET (buffer),
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GST_BUFFER_OFFSET_END (buffer),
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
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GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
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gst_buffer_get_size (buffer));
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return ret;
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}
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static gboolean
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gst_srt_sink_unlock (GstBaseSink * bsink)
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{
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GstSRTSink *self = GST_SRT_SINK (bsink);
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gst_srt_object_wakeup (self->srtobject, self->cancellable);
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return TRUE;
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}
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static gboolean
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gst_srt_sink_unlock_stop (GstBaseSink * bsink)
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{
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GstSRTSink *self = GST_SRT_SINK (bsink);
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g_cancellable_reset (self->cancellable);
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return TRUE;
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}
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static gboolean
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gst_srt_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
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{
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GstSRTSink *self = GST_SRT_SINK (bsink);
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GstStructure *s;
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const GValue *streamheader;
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GST_DEBUG_OBJECT (self, "setcaps %" GST_PTR_FORMAT, caps);
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g_clear_pointer (&self->headers, gst_buffer_list_unref);
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s = gst_caps_get_structure (caps, 0);
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streamheader = gst_structure_get_value (s, "streamheader");
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if (!streamheader) {
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GST_DEBUG_OBJECT (self, "'streamheader' field not present");
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} else if (GST_VALUE_HOLDS_BUFFER (streamheader)) {
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GST_DEBUG_OBJECT (self, "'streamheader' field holds buffer");
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self->headers = gst_buffer_list_new_sized (1);
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gst_buffer_list_add (self->headers, g_value_dup_boxed (streamheader));
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} else if (GST_VALUE_HOLDS_ARRAY (streamheader)) {
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guint i, size;
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GST_DEBUG_OBJECT (self, "'streamheader' field holds array");
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size = gst_value_array_get_size (streamheader);
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self->headers = gst_buffer_list_new_sized (size);
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for (i = 0; i < size; i++) {
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const GValue *v = gst_value_array_get_value (streamheader, i);
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if (!GST_VALUE_HOLDS_BUFFER (v)) {
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GST_ERROR_OBJECT (self, "'streamheader' item of unexpected type '%s'",
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G_VALUE_TYPE_NAME (v));
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return FALSE;
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}
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gst_buffer_list_add (self->headers, g_value_dup_boxed (v));
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}
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} else {
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GST_ERROR_OBJECT (self, "'streamheader' field has unexpected type '%s'",
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G_VALUE_TYPE_NAME (streamheader));
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return FALSE;
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}
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GST_DEBUG_OBJECT (self, "Collected streamheaders: %u buffers",
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self->headers ? gst_buffer_list_length (self->headers) : 0);
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return TRUE;
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}
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static void
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gst_srt_sink_class_init (GstSRTSinkClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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GstBaseSinkClass *gstbasesink_class = GST_BASE_SINK_CLASS (klass);
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gobject_class->set_property = gst_srt_sink_set_property;
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gobject_class->get_property = gst_srt_sink_get_property;
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gobject_class->finalize = gst_srt_sink_finalize;
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/**
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* GstSRTSink::caller-added:
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* @gstsrtsink: the srtsink element that emitted this signal
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* @sock: the client socket descriptor that was added to srtsink
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* @addr: the #GSocketAddress that describes the @sock
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*
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* The given socket descriptor was added to srtsink.
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*/
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signals[SIG_CALLER_ADDED] =
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g_signal_new ("caller-added", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstSRTSinkClass, caller_added),
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NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_SOCKET_ADDRESS);
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/**
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* GstSRTSink::caller-removed:
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* @gstsrtsink: the srtsink element that emitted this signal
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* @sock: the client socket descriptor that was added to srtsink
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* @addr: the #GSocketAddress that describes the @sock
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*
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* The given socket descriptor was removed from srtsink.
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*/
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signals[SIG_CALLER_REMOVED] =
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g_signal_new ("caller-removed", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstSRTSinkClass,
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caller_added), NULL, NULL, NULL, G_TYPE_NONE,
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2, G_TYPE_INT, G_TYPE_SOCKET_ADDRESS);
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gst_srt_object_install_properties_helper (gobject_class);
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gst_element_class_add_static_pad_template (gstelement_class, &sink_template);
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gst_element_class_set_metadata (gstelement_class,
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"SRT sink", "Sink/Network",
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"Send data over the network via SRT",
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"Justin Kim <justin.joy.9to5@gmail.com>");
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gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_srt_sink_start);
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gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_srt_sink_stop);
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gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_srt_sink_render);
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gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_srt_sink_unlock);
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gstbasesink_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_srt_sink_unlock_stop);
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gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_srt_sink_set_caps);
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}
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static GstURIType
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gst_srt_sink_uri_get_type (GType type)
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{
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return GST_URI_SINK;
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}
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static const gchar *const *
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gst_srt_sink_uri_get_protocols (GType type)
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{
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static const gchar *protocols[] = { GST_SRT_DEFAULT_URI_SCHEME, NULL };
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return protocols;
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}
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static gchar *
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gst_srt_sink_uri_get_uri (GstURIHandler * handler)
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{
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gchar *uri_str;
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GstSRTSink *self = GST_SRT_SINK (handler);
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GST_OBJECT_LOCK (self);
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uri_str = gst_uri_to_string (self->srtobject->uri);
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GST_OBJECT_UNLOCK (self);
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return uri_str;
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}
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static gboolean
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gst_srt_sink_uri_set_uri (GstURIHandler * handler,
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const gchar * uri, GError ** error)
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{
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GstSRTSink *self = GST_SRT_SINK (handler);
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gboolean ret;
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GST_OBJECT_LOCK (self);
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ret = gst_srt_object_set_uri (self->srtobject, uri, error);
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GST_OBJECT_UNLOCK (self);
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return ret;
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}
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static void
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gst_srt_sink_uri_handler_init (gpointer g_iface, gpointer iface_data)
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{
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GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
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iface->get_type = gst_srt_sink_uri_get_type;
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iface->get_protocols = gst_srt_sink_uri_get_protocols;
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iface->get_uri = gst_srt_sink_uri_get_uri;
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iface->set_uri = gst_srt_sink_uri_set_uri;
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}
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