732 lines
20 KiB
C
732 lines
20 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 <gio/gunixfdlist.h>
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#include "server/pv-daemon.h"
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#include "client/pv-context.h"
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#include "client/pv-stream.h"
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#include "client/pv-enumtypes.h"
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#include "dbus/org-pulsevideo.h"
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struct _PvStreamPrivate
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{
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PvContext *context;
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gchar *name;
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gchar *target;
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PvStreamState state;
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PvCapture1 *capture;
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gchar *source_output_path;
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PvSourceOutput1 *source_output;
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GSocket *socket;
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PvStreamMode mode;
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guint socket_id;
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PvBufferInfo info;
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};
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#define PV_STREAM_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), PV_TYPE_STREAM, PvStreamPrivate))
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G_DEFINE_TYPE (PvStream, pv_stream, G_TYPE_OBJECT);
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enum
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{
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PROP_0,
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PROP_CONTEXT,
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PROP_NAME,
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PROP_STATE,
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PROP_SOCKET
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};
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enum
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{
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SIGNAL_NEW_BUFFER,
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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
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pv_stream_get_property (GObject *_object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PvStream *stream = PV_STREAM (_object);
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PvStreamPrivate *priv = stream->priv;
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switch (prop_id) {
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case PROP_CONTEXT:
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g_value_set_object (value, priv->context);
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break;
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case PROP_NAME:
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g_value_set_string (value, priv->name);
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break;
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case PROP_STATE:
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g_value_set_enum (value, priv->state);
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break;
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case PROP_SOCKET:
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g_value_set_object (value, priv->socket);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (stream, 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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pv_stream_set_property (GObject *_object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PvStream *stream = PV_STREAM (_object);
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PvStreamPrivate *priv = stream->priv;
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switch (prop_id) {
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case PROP_CONTEXT:
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priv->context = g_value_dup_object (value);
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break;
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case PROP_NAME:
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priv->name = g_value_dup_string (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (stream, 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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pv_stream_finalize (GObject * object)
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{
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PvStream *stream = PV_STREAM (object);
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PvStreamPrivate *priv = stream->priv;
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g_free (priv->name);
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G_OBJECT_CLASS (pv_stream_parent_class)->finalize (object);
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}
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static void
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pv_stream_class_init (PvStreamClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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g_type_class_add_private (klass, sizeof (PvStreamPrivate));
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gobject_class->finalize = pv_stream_finalize;
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gobject_class->set_property = pv_stream_set_property;
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gobject_class->get_property = pv_stream_get_property;
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/**
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* PvStream:context
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*
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* The context of the stream.
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*/
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g_object_class_install_property (gobject_class,
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PROP_CONTEXT,
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g_param_spec_object ("context",
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"Context",
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"The context",
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PV_TYPE_CONTEXT,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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/**
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* PvStream:name
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*
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* The name of the stream as specified at construction time.
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*/
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g_object_class_install_property (gobject_class,
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PROP_NAME,
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g_param_spec_string ("name",
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"Name",
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"The name of the stream",
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NULL,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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/**
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* PvStream:state
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*
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* The state of the stream. Use the notify::state signal to be notified
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* of state changes.
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*/
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g_object_class_install_property (gobject_class,
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PROP_STATE,
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g_param_spec_enum ("state",
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"State",
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"The stream state",
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PV_TYPE_STREAM_STATE,
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PV_STREAM_STATE_UNCONNECTED,
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G_PARAM_READABLE |
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G_PARAM_STATIC_STRINGS));
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/**
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* PvStream:socket
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*
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* The socket of the stream. When doing pv_stream_start() with
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* #PV_STREAM_MODE_SOCKET, the socket will contain a data stream with
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* meta data and anciliary data containing fds with the data.
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*/
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g_object_class_install_property (gobject_class,
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PROP_SOCKET,
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g_param_spec_object ("socket",
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"Socket",
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"The stream socket",
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G_TYPE_SOCKET,
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G_PARAM_READABLE |
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G_PARAM_STATIC_STRINGS));
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/**
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* PvStream:new-buffer
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*
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* When doing pv_stream_start() with #PV_STREAM_MODE_BUFFER, this signal
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* will be fired whenever a new buffer can be obtained with
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* pv_stream_capture_buffer().
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*/
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signals[SIGNAL_NEW_BUFFER] = g_signal_new ("new-buffer",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0,
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NULL,
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NULL,
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g_cclosure_marshal_generic,
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G_TYPE_NONE,
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0,
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G_TYPE_NONE);
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}
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static void
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pv_stream_init (PvStream * stream)
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{
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PvStreamPrivate *priv = stream->priv = PV_STREAM_GET_PRIVATE (stream);
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priv->state = PV_STREAM_STATE_UNCONNECTED;
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}
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/**
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* pv_stream_new:
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* @context: a #PvContext
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* @name: a stream name
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*
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* Make a new unconnected #PvStream
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*
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* Returns: a new unconnected #PvStream
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*/
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PvStream *
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pv_stream_new (PvContext * context, const gchar *name)
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{
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g_return_val_if_fail (PV_IS_CONTEXT (context), NULL);
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g_return_val_if_fail (name != NULL, NULL);
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return g_object_new (PV_TYPE_STREAM, "context", context, "name", name, NULL);
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}
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static void
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stream_set_state (PvStream *stream, PvStreamState state)
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{
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if (stream->priv->state != state) {
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stream->priv->state = state;
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g_object_notify (G_OBJECT (stream), "state");
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}
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}
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/**
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* pv_stream_get_state:
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* @stream: a #PvStream
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*
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* Get the state of @stream.
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*
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* Returns: the state of @stream
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*/
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PvStreamState
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pv_stream_get_state (PvStream *stream)
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{
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g_return_val_if_fail (PV_IS_STREAM (stream), PV_STREAM_STATE_ERROR);
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return stream->priv->state;
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}
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static void
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on_source_output1_proxy (GObject *source_object,
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GAsyncResult *res,
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gpointer user_data)
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{
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PvStream *stream = user_data;
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PvStreamPrivate *priv = stream->priv;
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GError *error = NULL;
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priv->source_output = pv_source_output1_proxy_new_finish (res, &error);
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if (priv->source_output == NULL) {
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stream_set_state (stream, PV_STREAM_STATE_ERROR);
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g_error ("failed to get source output proxy: %s", error->message);
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g_clear_error (&error);
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return;
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}
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stream_set_state (stream, PV_STREAM_STATE_READY);
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}
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static void
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on_source_output_created (GObject *source_object,
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GAsyncResult *res,
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gpointer user_data)
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{
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PvStream *stream = user_data;
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PvStreamPrivate *priv = stream->priv;
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PvContext *context = priv->context;
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GError *error = NULL;
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if (!pv_capture1_call_create_source_output_finish (priv->capture,
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&priv->source_output_path, res, &error)) {
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stream_set_state (stream, PV_STREAM_STATE_ERROR);
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g_print ("failed to get connect capture: %s", error->message);
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g_clear_error (&error);
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return;
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}
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pv_source_output1_proxy_new (pv_context_get_connection (context),
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G_DBUS_PROXY_FLAGS_NONE,
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PV_DBUS_SERVICE,
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priv->source_output_path,
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NULL,
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on_source_output1_proxy,
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stream);
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}
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static gboolean
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create_source_output (PvStream *stream)
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{
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PvStreamPrivate *priv = stream->priv;
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GVariantBuilder builder;
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g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}"));
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g_variant_builder_add (&builder, "{sv}", "name", g_variant_new_string ("hello"));
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pv_capture1_call_create_source_output (priv->capture,
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priv->target ? priv->target : "/", /* const gchar *arg_source */
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g_variant_builder_end (&builder), /* GVariant *arg_props */
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NULL, /* GCancellable *cancellable */
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on_source_output_created,
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stream);
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return TRUE;
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}
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static void
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on_source_output_removed (GObject *source_object,
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GAsyncResult *res,
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gpointer user_data)
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{
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PvStream *stream = user_data;
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PvStreamPrivate *priv = stream->priv;
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GError *error = NULL;
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if (!pv_capture1_call_remove_source_output_finish (priv->capture,
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res, &error)) {
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stream_set_state (stream, PV_STREAM_STATE_ERROR);
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g_print ("failed to disconnect: %s", error->message);
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g_clear_error (&error);
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return;
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}
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g_clear_pointer (&priv->source_output_path, g_free);
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g_clear_object (&priv->source_output);
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}
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static gboolean
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remove_source_output (PvStream *stream)
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{
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PvStreamPrivate *priv = stream->priv;
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pv_capture1_call_remove_source_output (priv->capture,
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priv->source_output_path,
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NULL, /* GCancellable *cancellable */
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on_source_output_removed,
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stream);
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return TRUE;
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}
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static void
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on_capture_proxy (GObject *source_object,
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GAsyncResult *res,
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gpointer user_data)
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{
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PvStream *stream = user_data;
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PvStreamPrivate *priv = stream->priv;
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GError *error = NULL;
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priv->capture = pv_capture1_proxy_new_finish (res, &error);
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if (priv->capture == NULL) {
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stream_set_state (stream, PV_STREAM_STATE_ERROR);
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g_error ("failed to get capture proxy: %s", error->message);
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g_clear_error (&error);
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return;
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}
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create_source_output (stream);
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}
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/**
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* pv_stream_connect_capture:
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* @stream: a #PvStream
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* @device: the device name to connect to
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* @flags: a #PvStreamFlags
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*
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* Connect @stream for capturing from @device.
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*
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* Returns: %TRUE on success.
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*/
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gboolean
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pv_stream_connect_capture (PvStream *stream,
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const gchar *source,
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PvStreamFlags flags)
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{
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PvStreamPrivate *priv;
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PvContext *context;
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g_return_val_if_fail (PV_IS_STREAM (stream), FALSE);
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priv = stream->priv;
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context = priv->context;
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g_return_val_if_fail (pv_context_get_state (context) == PV_CONTEXT_STATE_READY, FALSE);
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priv->target = g_strdup (source);
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stream_set_state (stream, PV_STREAM_STATE_CONNECTING);
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if (priv->capture == NULL) {
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pv_capture1_proxy_new (pv_context_get_connection (context),
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G_DBUS_PROXY_FLAGS_NONE,
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PV_DBUS_SERVICE,
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pv_context_get_client_path (context),
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NULL,
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on_capture_proxy,
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stream);
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return TRUE;
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} else {
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return create_source_output (stream);
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}
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}
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/**
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* pv_stream_disconnect:
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* @stream: a #PvStream
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*
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* Disconnect @stream.
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*
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* Returns: %TRUE on success
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*/
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gboolean
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pv_stream_disconnect (PvStream *stream)
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{
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PvStreamPrivate *priv;
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PvContext *context;
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g_return_val_if_fail (PV_IS_STREAM (stream), FALSE);
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priv = stream->priv;
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g_return_val_if_fail (priv->state >= PV_STREAM_STATE_READY, FALSE);
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g_return_val_if_fail (priv->capture != NULL, FALSE);
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context = priv->context;
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g_return_val_if_fail (pv_context_get_state (context) == PV_CONTEXT_STATE_READY, FALSE);
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remove_source_output (stream);
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stream_set_state (stream, PV_STREAM_STATE_UNCONNECTED);
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return TRUE;
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}
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typedef struct {
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guint64 offset;
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guint64 size;
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} FDMessage;
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static gboolean
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on_socket_data (GSocket *socket,
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GIOCondition condition,
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gpointer user_data)
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{
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PvStream *stream = user_data;
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PvStreamPrivate *priv = stream->priv;
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switch (condition) {
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case G_IO_IN:
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{
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gssize len;
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GInputVector ivec;
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FDMessage msg;
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GSocketControlMessage **messages = NULL;
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gint num_messages = 0;
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gint flags = 0;
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GError *error = NULL;
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ivec.buffer = &msg;
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ivec.size = sizeof (msg);
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len = g_socket_receive_message (socket,
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NULL,
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&ivec,
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1,
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&messages,
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&num_messages,
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&flags,
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NULL,
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&error);
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g_assert (len == sizeof (msg));
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if (priv->info.message)
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g_object_unref (priv->info.message);
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priv->info.offset = msg.offset;
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priv->info.size = msg.size;
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priv->info.message = num_messages > 0 ? messages[0] : NULL;
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g_signal_emit (stream, SIGNAL_NEW_BUFFER, 0, 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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return TRUE;
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}
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static void
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handle_socket (PvStream *stream, gint fd)
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{
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PvStreamPrivate *priv = stream->priv;
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GError *error = NULL;
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g_print ("got fd %d\n", fd);
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priv->socket = g_socket_new_from_fd (fd, &error);
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if (priv->socket == NULL) {
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stream_set_state (stream, PV_STREAM_STATE_ERROR);
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g_error ("failed to create socket: %s", error->message);
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g_clear_error (&error);
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return;
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}
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switch (priv->mode) {
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case PV_STREAM_MODE_SOCKET:
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g_object_notify (G_OBJECT (stream), "socket");
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break;
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case PV_STREAM_MODE_BUFFER:
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{
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GSource *source;
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source = g_socket_create_source (priv->socket, G_IO_IN, NULL);
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g_source_set_callback (source, (GSourceFunc) on_socket_data, stream, NULL);
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priv->socket_id = g_source_attach (source, NULL);
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g_source_unref (source);
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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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}
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static void
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unhandle_socket (PvStream *stream)
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{
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PvStreamPrivate *priv = stream->priv;
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switch (priv->mode) {
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case PV_STREAM_MODE_SOCKET:
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g_clear_object (&priv->socket);
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g_object_notify (G_OBJECT (stream), "socket");
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break;
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|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
on_stream_acquired (GObject *source_object,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
PvStream *stream = user_data;
|
|
PvStreamPrivate *priv = stream->priv;
|
|
GUnixFDList *out_fd_list;
|
|
gint fd_idx, fd;
|
|
GVariant *out_props;
|
|
GError *error = NULL;
|
|
GVariant *result;
|
|
|
|
result = g_dbus_proxy_call_with_unix_fd_list_finish (G_DBUS_PROXY (priv->source_output), &out_fd_list, res, &error);
|
|
if (result == NULL) {
|
|
stream_set_state (stream, PV_STREAM_STATE_ERROR);
|
|
g_error ("failed to acquire: %s", error->message);
|
|
g_clear_error (&error);
|
|
return;
|
|
}
|
|
|
|
g_variant_get (result,
|
|
"(h@a{sv})",
|
|
&fd_idx,
|
|
&out_props);
|
|
|
|
g_variant_unref (result);
|
|
g_variant_unref (out_props);
|
|
|
|
if ((fd = g_unix_fd_list_get (out_fd_list, fd_idx, &error)) < 0) {
|
|
stream_set_state (stream, PV_STREAM_STATE_ERROR);
|
|
g_error ("failed to get FD: %s", error->message);
|
|
g_clear_error (&error);
|
|
return;
|
|
}
|
|
|
|
handle_socket (stream, fd);
|
|
|
|
stream_set_state (stream, PV_STREAM_STATE_STREAMING);
|
|
}
|
|
|
|
/**
|
|
* pv_stream_start:
|
|
* @stream: a #PvStream
|
|
* @mode: a #PvStreamMode
|
|
*
|
|
* Start capturing from @stream.
|
|
*
|
|
* When @mode is #PV_STREAM_MODE_SOCKET, you should connect to the notify::socket
|
|
* signal to obtain a readable socket with metadata and data.
|
|
*
|
|
* When @mode is ##PV_STREAM_MODE_BUFFER, you should connect to the new-buffer
|
|
* signal and use pv_stream_capture_buffer() to get the latest metadata and
|
|
* data.
|
|
*
|
|
* Returns: %TRUE on success.
|
|
*/
|
|
gboolean
|
|
pv_stream_start (PvStream *stream, PvStreamMode mode)
|
|
{
|
|
PvStreamPrivate *priv;
|
|
|
|
g_return_val_if_fail (PV_IS_STREAM (stream), FALSE);
|
|
|
|
priv = stream->priv;
|
|
g_return_val_if_fail (priv->state == PV_STREAM_STATE_READY, FALSE);
|
|
|
|
priv->mode = mode;
|
|
|
|
stream_set_state (stream, PV_STREAM_STATE_STARTING);
|
|
{
|
|
GVariantBuilder builder;
|
|
|
|
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}"));
|
|
g_variant_builder_add (&builder, "{sv}", "name", g_variant_new_string ("hello"));
|
|
|
|
pv_source_output1_call_acquire (priv->source_output,
|
|
g_variant_builder_end (&builder), /* GVariant *arg_properties */
|
|
NULL, /* GCancellable *cancellable */
|
|
on_stream_acquired,
|
|
stream);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
on_stream_released (GObject *source_object,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
PvStream *stream = user_data;
|
|
PvStreamPrivate *priv = stream->priv;
|
|
GError *error = NULL;
|
|
|
|
if (!pv_source_output1_call_release_finish (priv->source_output,
|
|
res, &error)) {
|
|
stream_set_state (stream, PV_STREAM_STATE_ERROR);
|
|
g_error ("failed to release: %s", error->message);
|
|
g_clear_error (&error);
|
|
return;
|
|
}
|
|
unhandle_socket (stream);
|
|
|
|
stream_set_state (stream, PV_STREAM_STATE_READY);
|
|
}
|
|
|
|
/**
|
|
* pv_stream_stop:
|
|
* @stream: a #PvStream
|
|
*
|
|
* Stop capturing from @stream.
|
|
*
|
|
* Returns: %TRUE on success.
|
|
*/
|
|
gboolean
|
|
pv_stream_stop (PvStream *stream)
|
|
{
|
|
PvStreamPrivate *priv;
|
|
|
|
g_return_val_if_fail (PV_IS_STREAM (stream), FALSE);
|
|
|
|
priv = stream->priv;
|
|
g_return_val_if_fail (priv->state == PV_STREAM_STATE_STREAMING, FALSE);
|
|
|
|
pv_source_output1_call_release (priv->source_output,
|
|
NULL, /* GCancellable *cancellable */
|
|
on_stream_released,
|
|
stream);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* pv_stream_capture_buffer:
|
|
* @stream: a #PvStream
|
|
* @info: a #PvBufferInfo
|
|
*
|
|
* Capture the next buffer from @stream. This function should be called every
|
|
* time after the new-buffer callback has been emitted.
|
|
*
|
|
* Returns: %TRUE when @info contains valid information
|
|
*/
|
|
gboolean
|
|
pv_stream_capture_buffer (PvStream *stream, PvBufferInfo *info)
|
|
{
|
|
PvStreamPrivate *priv;
|
|
|
|
g_return_val_if_fail (PV_IS_STREAM (stream), FALSE);
|
|
g_return_val_if_fail (info != NULL, FALSE);
|
|
|
|
priv = stream->priv;
|
|
g_return_val_if_fail (priv->state == PV_STREAM_STATE_STREAMING, FALSE);
|
|
|
|
*info = priv->info;
|
|
|
|
return TRUE;
|
|
}
|