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/*
* GStreamer
* Copyright (C) 2017 Collabora Inc.
* Copyright (C) 2021 Igalia S.L.
* Author: Philippe Normand <philn@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-fakeaudiosink
* @title: fakeaudiosink
*
* This element is the same as fakesink but will pretend to act as an audio sink
* supporting the `GstStreamVolume` interface. This is useful for throughput
* testing while creating a new pipeline or for CI purposes on machines not
* running a real audio daemon.
*
* ## Example launch lines
* |[
* gst-launch-1.0 audiotestsrc ! fakeaudiosink
* ]|
*
* Since: 1.20
*/
#include "gstdebugutilsbadelements.h"
#include "gstfakeaudiosink.h"
#include "gstfakesinkutils.h"
#include <gst/audio/audio.h>
enum
{
PROP_0,
PROP_VOLUME,
PROP_MUTE,
PROP_LAST
};
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_AUDIO_CAPS_MAKE (GST_AUDIO_FORMATS_ALL)));
G_DEFINE_TYPE_WITH_CODE (GstFakeAudioSink, gst_fake_audio_sink, GST_TYPE_BIN,
G_IMPLEMENT_INTERFACE (GST_TYPE_STREAM_VOLUME, NULL););
GST_ELEMENT_REGISTER_DEFINE (fakeaudiosink, "fakeaudiosink",
GST_RANK_NONE, gst_fake_audio_sink_get_type ());
static void
gst_fake_audio_sink_proxy_properties (GstFakeAudioSink * self,
GstElement * child)
{
static gsize initialized = 0;
if (g_once_init_enter (&initialized)) {
gst_fake_sink_proxy_properties (GST_ELEMENT_CAST (self), child, PROP_LAST);
g_once_init_leave (&initialized, 1);
}
}
static void
gst_fake_audio_sink_init (GstFakeAudioSink * self)
{
GstElement *child;
GstPadTemplate *template = gst_static_pad_template_get (&sink_factory);
self->volume = 1.0;
self->mute = FALSE;
child = gst_element_factory_make ("fakesink", "sink");
if (child) {
GstPad *sink_pad = gst_element_get_static_pad (child, "sink");
GstPad *ghost_pad;
/* mimic GstAudioSink base class */
g_object_set (child, "qos", TRUE, "sync", TRUE, NULL);
gst_bin_add (GST_BIN_CAST (self), child);
ghost_pad = gst_ghost_pad_new_from_template ("sink", sink_pad, template);
gst_object_unref (template);
gst_element_add_pad (GST_ELEMENT_CAST (self), ghost_pad);
gst_object_unref (sink_pad);
self->child = child;
gst_fake_audio_sink_proxy_properties (self, child);
} else {
g_warning ("Check your GStreamer installation, "
"core element 'fakesink' is missing.");
}
}
static void
gst_fake_audio_sink_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstFakeAudioSink *self = GST_FAKE_AUDIO_SINK (object);
switch (property_id) {
case PROP_VOLUME:
g_value_set_double (value, self->volume);
break;
case PROP_MUTE:
g_value_set_boolean (value, self->mute);
break;
default:
g_object_get_property (G_OBJECT (self->child), pspec->name, value);
break;
}
}
static void
gst_fake_audio_sink_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstFakeAudioSink *self = GST_FAKE_AUDIO_SINK (object);
switch (property_id) {
case PROP_VOLUME:
self->volume = g_value_get_double (value);
break;
case PROP_MUTE:
self->mute = g_value_get_boolean (value);
break;
default:
g_object_set_property (G_OBJECT (self->child), pspec->name, value);
break;
}
}
static void
gst_fake_audio_sink_class_init (GstFakeAudioSinkClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->get_property = gst_fake_audio_sink_get_property;
object_class->set_property = gst_fake_audio_sink_set_property;
/**
* GstFakeAudioSink:volume
*
* Control the audio volume
*
* Since: 1.20
*/
g_object_class_install_property (object_class, PROP_VOLUME,
g_param_spec_double ("volume", "Volume", "The audio volume, 1.0=100%",
0, 10, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstFakeAudioSink:mute
*
* Control the mute state
*
* Since: 1.20
*/
g_object_class_install_property (object_class, PROP_MUTE,
g_param_spec_boolean ("mute", "Mute",
"Mute the audio channel without changing the volume", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_add_static_pad_template (element_class, &sink_factory);
gst_element_class_set_static_metadata (element_class, "Fake Audio Sink",
"Audio/Sink", "Fake audio renderer",
"Philippe Normand <philn@igalia.com>");
}
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