131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
/* Pulsevideo
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* Copyright (C) 2015 Wim Taymans <wim.taymans@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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#include <gst/gst.h>
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#include <gio/gio.h>
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#include "pv-v4l2-source.h"
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#define PV_V4L2_SOURCE_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), PV_TYPE_V4L2_SOURCE, PvV4l2SourcePrivate))
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struct _PvV4l2SourcePrivate
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{
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GstElement *pipeline;
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GstElement *sink;
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GSocket *socket;
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};
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G_DEFINE_TYPE (PvV4l2Source, pv_v4l2_source, PV_TYPE_SOURCE);
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static void
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setup_pipeline (PvV4l2Source *source)
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{
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PvV4l2SourcePrivate *priv = source->priv;
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priv->pipeline = gst_parse_launch ("v4l2src ! video/x-raw,width=320,height=240,framerate=30/1 ! "
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"pvfdpay ! multisocketsink buffers-max=2 buffers-soft-max=1 "
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"recover-policy=latest sync-method=latest name=sink sync=true "
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"enable-last-sample=false", NULL);
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priv->sink = gst_bin_get_by_name (GST_BIN (priv->pipeline), "sink");
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gst_element_set_state (priv->pipeline, GST_STATE_READY);
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}
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static void
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on_socket_notify (GObject *gobject,
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GParamSpec *pspec,
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gpointer user_data)
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{
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PvV4l2Source *source = user_data;
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PvV4l2SourcePrivate *priv = source->priv;
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GSocket *socket;
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guint num_handles;
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g_object_get (gobject, "socket", &socket, NULL);
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if (socket == NULL) {
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if (priv->socket)
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g_signal_emit_by_name (priv->sink, "remove", priv->socket);
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} else {
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g_signal_emit_by_name (priv->sink, "add", socket);
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}
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priv->socket = socket;
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g_object_get (priv->sink, "num-handles", &num_handles, NULL);
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if (num_handles == 0) {
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gst_element_set_state (priv->pipeline, GST_STATE_READY);
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} else {
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gst_element_set_state (priv->pipeline, GST_STATE_PLAYING);
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}
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}
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static PvSourceOutput *
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v4l2_create_source_output (PvSource *source, GVariant *props, const gchar *prefix)
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{
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PvSourceOutput *output;
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output = PV_SOURCE_CLASS (pv_v4l2_source_parent_class)->create_source_output (source, props, prefix);
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g_signal_connect (output, "notify::socket", (GCallback) on_socket_notify, source);
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return output;
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}
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static gboolean
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v4l2_release_source_output (PvSource *source, PvSourceOutput *output)
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{
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return PV_SOURCE_CLASS (pv_v4l2_source_parent_class)->release_source_output (source, output);
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}
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static void
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v4l2_source_finalize (GObject * object)
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{
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G_OBJECT_CLASS (pv_v4l2_source_parent_class)->finalize (object);
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}
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static void
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pv_v4l2_source_class_init (PvV4l2SourceClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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PvSourceClass *source_class = PV_SOURCE_CLASS (klass);
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g_type_class_add_private (klass, sizeof (PvV4l2SourcePrivate));
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gobject_class->finalize = v4l2_source_finalize;
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source_class->create_source_output = v4l2_create_source_output;
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source_class->release_source_output = v4l2_release_source_output;
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}
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static void
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pv_v4l2_source_init (PvV4l2Source * source)
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{
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source->priv = PV_V4L2_SOURCE_GET_PRIVATE (source);
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setup_pipeline (source);
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}
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PvSource *
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pv_v4l2_source_new (PvDaemon *daemon)
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{
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return g_object_new (PV_TYPE_V4L2_SOURCE, "daemon", daemon, NULL);
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}
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