static GstCaps *
_set_caps_features_with_passthrough (const GstCaps * caps,
const gchar * feature_name, GstCapsFeatures * passthrough)
{
guint i, j, m, n;
GstCaps *tmp;
tmp = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
GstCapsFeatures *features, *orig_features;
GstStructure *s = gst_caps_get_structure (caps, i);
orig_features = gst_caps_get_features (caps, i);
features = gst_caps_features_new (feature_name, NULL);
if (gst_caps_features_is_any (orig_features)) {
/* if we have any features, we add both the features with and without @passthrough */
gst_caps_append_structure_full (tmp, gst_structure_copy (s),
gst_caps_features_copy (features));
m = gst_caps_features_get_size (passthrough);
for (j = 0; j < m; j++) {
const gchar *feature = gst_caps_features_get_nth (passthrough, j);
/* if we already have the features */
if (gst_caps_features_contains (features, feature))
continue;
gst_caps_features_add (features, feature);
}
} else {
m = gst_caps_features_get_size (orig_features);
for (j = 0; j < m; j++) {
const gchar *feature = gst_caps_features_get_nth (orig_features, j);
/* if we already have the features */
if (gst_caps_features_contains (features, feature))
continue;
if (g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY) == 0)
continue;
if (gst_caps_features_contains (passthrough, feature)) {
gst_caps_features_add (features, feature);
}
}
}
gst_caps_append_structure_full (tmp, gst_structure_copy (s), features);
}
return tmp;
}
/* copies the given caps */
static GstCaps *
gst_video_convert_caps_remove_format_info (GstCaps * caps)
{
GstStructure *st;
GstCapsFeatures *f;
gint i, n;
GstCaps *res;
res = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
st = gst_caps_get_structure (caps, i);
f = gst_caps_get_features (caps, i);
/* If this is already expressed by the existing caps
* skip this structure */
if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
continue;
st = gst_structure_copy (st);
/* Only remove format info for the cases when we can actually convert */
if (!gst_caps_features_is_any (f)
&& gst_caps_features_is_equal (f,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
NULL);
gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
}
return res;
}
static GstCaps *
gst_video_scale_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstCaps *ret;
GstStructure *structure;
GstCapsFeatures *features;
gint i, n;
GST_DEBUG_OBJECT (trans,
"Transforming caps %" GST_PTR_FORMAT " in direction %s", caps,
(direction == GST_PAD_SINK) ? "sink" : "src");
ret = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
structure = gst_caps_get_structure (caps, i);
features = gst_caps_get_features (caps, i);
/* If this is already expressed by the existing caps
* skip this structure */
if (i > 0 && gst_caps_is_subset_structure_full (ret, structure, features))
continue;
/* make copy */
structure = gst_structure_copy (structure);
/* If the features are non-sysmem we can only do passthrough */
if (!gst_caps_features_is_any (features)
&& gst_caps_features_is_equal (features,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)) {
gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
/* if pixel aspect ratio, make a range of it */
if (gst_structure_has_field (structure, "pixel-aspect-ratio")) {
gst_structure_set (structure, "pixel-aspect-ratio",
GST_TYPE_FRACTION_RANGE, 1, G_MAXINT, G_MAXINT, 1, NULL);
}
}
gst_caps_append_structure_full (ret, structure,
gst_caps_features_copy (features));
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (ret);
ret = intersection;
}
GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
/* For each raw video structure, adds a variant with framerate unset */
static gboolean
fix_video_caps_framerate(GstCapsFeatures *f, GstStructure *s, gpointer user_data)
{
GstCaps *ret = GST_CAPS(user_data);
gint fps_n, fps_d;
gst_caps_append_structure_full(ret, gst_structure_copy(s), f ? gst_caps_features_copy(f) : NULL);
/* Don't mess with non-raw structures */
if (!gst_structure_has_name(s, "video/x-raw"))
goto done;
/* If possible try to limit the framerate at the source already */
if (gst_structure_get_fraction(s, "framerate", &fps_n, &fps_d)) {
GstStructure *tmp = gst_structure_copy(s);
gst_structure_remove_field(tmp, "framerate");
gst_caps_append_structure_full(ret, tmp, f ? gst_caps_features_copy(f) : NULL);
}
done:
return TRUE;
}
/*
* Takes caps and copies its video fields to tmpl_caps
*/
static GstCaps *
__gst_video_element_proxy_caps (GstElement * element, GstCaps * templ_caps,
GstCaps * caps)
{
GstCaps *result = gst_caps_new_empty ();
gint i, j;
gint templ_caps_size = gst_caps_get_size (templ_caps);
gint caps_size = gst_caps_get_size (caps);
for (i = 0; i < templ_caps_size; i++) {
GQuark q_name =
gst_structure_get_name_id (gst_caps_get_structure (templ_caps, i));
GstCapsFeatures *features = gst_caps_get_features (templ_caps, i);
for (j = 0; j < caps_size; j++) {
const GstStructure *caps_s = gst_caps_get_structure (caps, j);
const GValue *val;
GstStructure *s;
GstCaps *tmp = gst_caps_new_empty ();
s = gst_structure_new_id_empty (q_name);
if ((val = gst_structure_get_value (caps_s, "width")))
gst_structure_set_value (s, "width", val);
if ((val = gst_structure_get_value (caps_s, "height")))
gst_structure_set_value (s, "height", val);
if ((val = gst_structure_get_value (caps_s, "framerate")))
gst_structure_set_value (s, "framerate", val);
if ((val = gst_structure_get_value (caps_s, "pixel-aspect-ratio")))
gst_structure_set_value (s, "pixel-aspect-ratio", val);
if ((val = gst_structure_get_value (caps_s, "colorimetry")))
gst_structure_set_value (s, "colorimetry", val);
if ((val = gst_structure_get_value (caps_s, "chroma-site")))
gst_structure_set_value (s, "chroma-site", val);
gst_caps_append_structure_full (tmp, s,
gst_caps_features_copy (features));
result = gst_caps_merge (result, tmp);
}
}
return result;
}
/*
* Takes caps and copies its audio fields to tmpl_caps
*/
static GstCaps *
__gst_audio_element_proxy_caps (GstElement * element, GstCaps * templ_caps,
GstCaps * caps)
{
GstCaps *result = gst_caps_new_empty ();
gint i, j;
gint templ_caps_size = gst_caps_get_size (templ_caps);
gint caps_size = gst_caps_get_size (caps);
for (i = 0; i < templ_caps_size; i++) {
GQuark q_name =
gst_structure_get_name_id (gst_caps_get_structure (templ_caps, i));
GstCapsFeatures *features = gst_caps_get_features (templ_caps, i);
for (j = 0; j < caps_size; j++) {
const GstStructure *caps_s = gst_caps_get_structure (caps, j);
const GValue *val;
GstStructure *s;
GstCaps *tmp = gst_caps_new_empty ();
s = gst_structure_new_id_empty (q_name);
if ((val = gst_structure_get_value (caps_s, "rate")))
gst_structure_set_value (s, "rate", val);
if ((val = gst_structure_get_value (caps_s, "channels")))
gst_structure_set_value (s, "channels", val);
if ((val = gst_structure_get_value (caps_s, "channels-mask")))
gst_structure_set_value (s, "channels-mask", val);
gst_caps_append_structure_full (tmp, s,
gst_caps_features_copy (features));
result = gst_caps_merge (result, tmp);
}
}
return result;
}
