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auto: Expose colorspace and scaler elements for well know elements

Browse source 
And require Scaler in the class of elements to be plugged by
autovideoconvert

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/899>
This commit is contained in:
Thibault Saunier 2022-03-28 19:09:56 +02:00 committed by GStreamer Marge Bot
parent e153c558c7
commit f817afb865
1 changed files with 149 additions and 3 deletions
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152
subprojects/gst-plugins-bad/gst/autoconvert/gstautovideoconvert.c
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@ -67,9 +67,8 @@ gst_auto_video_convert_element_filter (GstPluginFeature * feature,
klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY_CAST (feature),
GST_ELEMENT_METADATA_KLASS);
/* only select color space converter */
if (strstr (klass, "Colorspace") &&
strstr (klass, "Converter") &&
strstr (klass, "Video")) {
if (strstr (klass, "Colorspace") && strstr (klass, "Scaler") &&
strstr (klass, "Converter") && strstr (klass, "Video")) {
GST_DEBUG_OBJECT (autovideoconvert,
"gst_auto_video_convert_element_filter found %s",
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (feature)));
@ -78,11 +77,158 @@ gst_auto_video_convert_element_filter (GstPluginFeature * feature,
return FALSE;
}
typedef struct
{
const gchar *name;
const gchar *bindesc;
GstRank rank;
} KnownBin;
#define GST_AUTOCONVERT_WNBIN_QUARK g_quark_from_static_string("autovideoconvert-wn-bin-quark")
static void
gst_auto_convert_wn_bin_class_init (GstBinClass * class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (class);
KnownBin *b = g_type_get_qdata (G_OBJECT_CLASS_TYPE (class),
GST_AUTOCONVERT_WNBIN_QUARK);
gchar **factory_names = g_strsplit (b->bindesc, " ! ", -1);
gint nfactories = 0;
GstElementFactory *factory;
GstStaticPadTemplate *template = NULL;
for (nfactories = 0; factory_names[nfactories + 1]; nfactories++);
factory = gst_element_factory_find (factory_names[0]);
for (GList * tmp =
(GList *) gst_element_factory_get_static_pad_templates (factory); tmp;
tmp = tmp->next) {
if (((GstStaticPadTemplate *) tmp->data)->direction == GST_PAD_SINK) {
template = tmp->data;
break;
}
}
gst_element_class_add_static_pad_template (element_class, template);
template = NULL;
factory = gst_element_factory_find (factory_names[nfactories]);
for (GList * tmp =
(GList *) gst_element_factory_get_static_pad_templates (factory); tmp;
tmp = tmp->next) {
if (((GstStaticPadTemplate *) tmp->data)->direction == GST_PAD_SRC) {
template = tmp->data;
break;
}
}
g_assert (template);
gst_element_class_add_static_pad_template (element_class, template);
gst_element_class_set_metadata (element_class, b->name,
"Scaler/Colorspace/Converter/Video", b->name,
"Thibault Saunier <tsaunier@igalia.com>");
g_strfreev (factory_names);
}
static void
gst_auto_convert_wn_bin_init (GstBin * self)
{
KnownBin *b =
g_type_get_qdata (G_OBJECT_TYPE (self), GST_AUTOCONVERT_WNBIN_QUARK);
GError *err = NULL;
GstElement *subbin = gst_parse_bin_from_description (b->bindesc, TRUE, &err);
if (err)
g_error ("%s couldn't be built?!: %s", b->name, err->message);
gst_bin_add (self, subbin);
gst_element_add_pad (GST_ELEMENT (self), gst_ghost_pad_new ("sink",
subbin->sinkpads->data));
gst_element_add_pad (GST_ELEMENT (self), gst_ghost_pad_new ("src",
subbin->srcpads->data));
}
static void
register_well_known_bins (void)
{
GTypeInfo typeinfo = {
sizeof (GstBinClass),
(GBaseInitFunc) NULL,
NULL,
(GClassInitFunc) gst_auto_convert_wn_bin_class_init,
NULL,
NULL,
sizeof (GstBin),
0,
(GInstanceInitFunc) gst_auto_convert_wn_bin_init,
};
/* *INDENT-OFF* */
const KnownBin subbins[] = {
{
.name = "auto+bayer2rgbcolorconvert",
.bindesc = "bayer2rgb ! videoconvertscale ! videoflip method=automatic ! videoconvertscale",
.rank = GST_RANK_SECONDARY,
},
{
.name = "auto+colorconvertrgb2bayer",
.bindesc = "videoconvertscale ! videoflip method=automatic ! videoconvertscale ! rgb2bayer",
.rank = GST_RANK_SECONDARY,
},
{
/* Fallback to only videoconvertscale if videoflip is not available */
.name = "auto+colorconvert-fallback",
.bindesc = "videoconvertscale",
.rank = GST_RANK_MARGINAL,
},
{
.name = "auto+colorconvert",
.bindesc = "videoconvertscale ! videoflip method=automatic ! videoconvertscale",
.rank = GST_RANK_SECONDARY,
},
{
.name = "auto+glcolorconvert",
.bindesc = "glcolorconvert ! glcolorscale ! glvideoflip method=automatic ! glcolorconvert",
.rank = GST_RANK_PRIMARY,
},
};
/* *INDENT-ON* */
for (gint i = 0; i < G_N_ELEMENTS (subbins); i++) {
GType type = 0;
KnownBin *b = NULL;
GstElement *subbin = gst_parse_launch (subbins[i].bindesc, NULL);
if (!subbin) {
GST_INFO ("Ignoring possible Converting scaler: %s '%s'", subbins[i].name,
subbins[i].bindesc);
continue;
}
gst_object_unref (subbin);
type = g_type_register_static (GST_TYPE_BIN, subbins[i].name, &typeinfo, 0);
b = g_malloc0 (sizeof (KnownBin));
b->name = g_strdup (subbins[i].name);
b->bindesc = g_strdup (subbins[i].bindesc);
b->rank = subbins[i].rank;
g_type_set_qdata (type, GST_AUTOCONVERT_WNBIN_QUARK, b);
if (!gst_element_register (NULL, b->name, b->rank, type)) {
g_warning ("Failed to register %s", "autoglcolorconverter");
}
}
}
static GList *
gst_auto_video_convert_create_factory_list (GstAutoConvert * autoconvert)
{
GList *result = NULL;
static gpointer registered_well_known_bins = FALSE;
if (g_once_init_enter (&registered_well_known_bins)) {
register_well_known_bins ();
g_once_init_leave (&registered_well_known_bins, (gpointer) TRUE);
}
/* get the feature list using the filter */
result = gst_registry_feature_filter (gst_registry_get (),