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uritranscodebin: Add setup-source and element-setup signals

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The same way as playbinX does it as it is often quite useful
This commit is contained in:
Thibault Saunier 2020-11-19 18:29:15 -03:00
parent 142e571c28
commit 530f694366
2 changed files with 82 additions and 1 deletions
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24
docs/plugins/gst_plugins_cache.json
View file

@ -220850,7 +220850,29 @@
"writable": true
}
},
"rank": "none"
"rank": "none",
"signals": {
"element-setup": {
"args": [
{
"name": "arg0",
"type": "GstElement"
}
],
"return-type": "void",
"when": "last"
},
"source-setup": {
"args": [
{
"name": "arg0",
"type": "GstElement"
}
],
"return-type": "void",
"when": "last"
}
}
}
},
"filename": "gsttranscode",

59
gst/transcode/gsturitranscodebin.c
View file

@ -89,6 +89,15 @@ enum
LAST_PROP
};
/* signals */
enum
{
SIGNAL_SOURCE_SETUP,
SIGNAL_ELEMENT_SETUP,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
static void
post_missing_plugin_error (GstElement * dec, const gchar * element_name)
{
@ -287,6 +296,13 @@ src_pad_removed_cb (GstElement * element, GstPad * pad,
/* FIXME : IMPLEMENT */
}
static void
source_setup_cb (GstElement * element, GstElement * source,
GstUriTranscodeBin * self)
{
g_signal_emit (self, signals[SIGNAL_SOURCE_SETUP], 0, source);
}
static gboolean
make_source (GstUriTranscodeBin * self)
{
@ -306,6 +322,8 @@ make_source (GstUriTranscodeBin * self)
g_signal_connect (self->src, "pad-added", (GCallback) src_pad_added_cb, self);
g_signal_connect (self->src, "pad-removed",
(GCallback) src_pad_removed_cb, self);
g_signal_connect (self->src, "source-setup",
G_CALLBACK (source_setup_cb), self);
return TRUE;
@ -393,6 +411,7 @@ deep_element_added (GstBin * bin, GstBin * sub_bin, GstElement * child)
GstUriTranscodeBin *self = GST_URI_TRANSCODE_BIN (bin);
set_location_on_muxer_if_sink (self, child);
g_signal_emit (bin, signals[SIGNAL_ELEMENT_SETUP], 0, child);
GST_BIN_CLASS (parent_class)->deep_element_added (bin, sub_bin, child);
}
@ -680,6 +699,46 @@ gst_uri_transcode_bin_class_init (GstUriTranscodeBinClass * klass)
g_param_spec_object ("audio-filter", "Audio filter",
"the audio filter(s) to apply, if possible",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstUriTranscodeBin::source-setup:
* @uritranscodebin: a #GstUriTranscodeBin
* @source: source element
*
* This signal is emitted after the source element has been created, so
* it can be configured by setting additional properties (e.g. set a
* proxy server for an http source, or set the device and read speed for
* an audio cd source). This is functionally equivalent to connecting to
* the notify::source signal, but more convenient.
*
* This signal is usually emitted from the context of a GStreamer streaming
* thread.
*
* Since: 1.20
*/
signals[SIGNAL_SOURCE_SETUP] =
g_signal_new ("source-setup", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, GST_TYPE_ELEMENT);
/**
* GstUriTranscodeBin::element-setup:
* @uritranscodebin: a #GstUriTranscodeBin
* @element: an element that was added to the uritranscodebin hierarchy
*
* This signal is emitted when a new element is added to uritranscodebin or any of
* its sub-bins. This signal can be used to configure elements, e.g. to set
* properties on decoders. This is functionally equivalent to connecting to
* the deep-element-added signal, but more convenient.
*
* This signal is usually emitted from the context of a GStreamer streaming
* thread, so might be called at the same time as code running in the main
* application thread.
*
* Since: 1.20
*/
signals[SIGNAL_ELEMENT_SETUP] =
g_signal_new ("element-setup", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, GST_TYPE_ELEMENT);
}
static void