/* NB: try to mirror decodebin behavior */
static gboolean
swfdec_gst_feature_filter (GstPluginFeature *feature, gpointer caps, const gchar* klassname, gboolean autoplugonly)
{
const GList *walk;
const gchar *klass;
/* we only care about element factories */
if (!GST_IS_ELEMENT_FACTORY (feature))
return FALSE;
/* only decoders are interesting */
klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
if (strstr (klass, klassname) == NULL)
return FALSE;
/* only select elements with autoplugging rank */
if (autoplugonly && gst_plugin_feature_get_rank (feature) < GST_RANK_MARGINAL)
return FALSE;
/* only care about the right sink caps */
for (walk = gst_element_factory_get_static_pad_templates (GST_ELEMENT_FACTORY (feature));
walk; walk = walk->next) {
GstStaticPadTemplate *template = walk->data;
static gboolean
check_parser_caps_filter (GstDecodebin3 * dbin, GstCaps * caps)
{
GList *tmp;
gboolean res = FALSE;
g_mutex_lock (&dbin->factories_lock);
gst_decode_bin_update_factories_list (dbin);
for (tmp = dbin->decoder_factories; tmp; tmp = tmp->next) {
GstElementFactory *factory = (GstElementFactory *) tmp->data;
GstCaps *tcaps;
const GList *tmps;
GST_LOG ("Trying factory %s",
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
for (tmps = gst_element_factory_get_static_pad_templates (factory); tmps;
tmps = tmps->next) {
GstStaticPadTemplate *st = (GstStaticPadTemplate *) tmps->data;
if (st->direction != GST_PAD_SINK || st->presence != GST_PAD_ALWAYS)
continue;
tcaps = gst_static_pad_template_get_caps (st);
if (gst_caps_can_intersect (tcaps, caps)) {
res = TRUE;
gst_caps_unref (tcaps);
goto beach;
}
gst_caps_unref (tcaps);
}
}
beach:
g_mutex_unlock (&dbin->factories_lock);
GST_DEBUG_OBJECT (dbin, "Can intersect : %d", res);
return res;
}
/**
* Returns true if any |aFactory| caps intersect with |aCaps|
*/
static bool SupportsCaps(GstElementFactory *aFactory, GstCaps *aCaps)
{
for (const GList *iter = gst_element_factory_get_static_pad_templates(aFactory); iter; iter = iter->next) {
GstStaticPadTemplate *templ = static_cast<GstStaticPadTemplate *>(iter->data);
if (templ->direction == GST_PAD_SRC) {
continue;
}
GstCaps *caps = gst_static_caps_get(&templ->static_caps);
if (!caps) {
continue;
}
bool supported = gst_caps_can_intersect(caps, aCaps);
gst_caps_unref(caps);
if (supported) {
return true;
}
}
return false;
}
static gboolean match_element(GstPluginFeature *feature, gpointer gdata)
{
struct typeinfo *data = (struct typeinfo*)gdata;
GstElementFactory *factory;
const GList *list;
if (!GST_IS_ELEMENT_FACTORY(feature))
return FALSE;
factory = GST_ELEMENT_FACTORY(feature);
if (!strstr(gst_element_factory_get_klass(factory), data->type))
return FALSE;
for (list = gst_element_factory_get_static_pad_templates(factory); list; list = list->next) {
GstStaticPadTemplate *pad = (GstStaticPadTemplate*)list->data;
GstCaps *caps;
gboolean ret;
if (pad->direction != GST_PAD_SINK)
continue;
caps = gst_static_caps_get(&pad->static_caps);
ret = gst_caps_is_always_compatible(caps, data->caps);
gst_caps_unref(caps);
if (ret)
return TRUE;
}
return FALSE;
}
/* Get the intersection of parser caps and available (sorted) decoders */
static GstCaps *
get_parser_caps_filter (GstDecodebin3 * dbin, GstCaps * caps)
{
GList *tmp;
GstCaps *filter_caps = gst_caps_new_empty ();
g_mutex_lock (&dbin->factories_lock);
gst_decode_bin_update_factories_list (dbin);
for (tmp = dbin->decoder_factories; tmp; tmp = tmp->next) {
GstElementFactory *factory = (GstElementFactory *) tmp->data;
GstCaps *tcaps, *intersection;
const GList *tmps;
GST_LOG ("Trying factory %s",
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
for (tmps = gst_element_factory_get_static_pad_templates (factory); tmps;
tmps = tmps->next) {
GstStaticPadTemplate *st = (GstStaticPadTemplate *) tmps->data;
if (st->direction != GST_PAD_SINK || st->presence != GST_PAD_ALWAYS)
continue;
tcaps = gst_static_pad_template_get_caps (st);
intersection =
gst_caps_intersect_full (tcaps, caps, GST_CAPS_INTERSECT_FIRST);
filter_caps = gst_caps_merge (filter_caps, intersection);
gst_caps_unref (tcaps);
}
}
g_mutex_unlock (&dbin->factories_lock);
GST_DEBUG_OBJECT (dbin, "Got filter caps %" GST_PTR_FORMAT, filter_caps);
return filter_caps;
}
/**
* gst_factory_list_filter:
* @array: a #GValueArray to filter
* @caps: a #GstCaps
*
* Filter out all the elementfactories in @array that can handle @caps as
* input.
*
* Returns: a #GValueArray of #GstElementFactory elements. Use
* g_value_array_free() after usage.
*/
GValueArray *
gst_factory_list_filter (GValueArray * array, const GstCaps * caps)
{
GValueArray *result;
gint i;
result = g_value_array_new (0);
GST_DEBUG ("finding factories");
/* loop over all the factories */
for (i = 0; i < array->n_values; i++) {
GValue *value;
GstElementFactory *factory;
const GList *templates;
GList *walk;
value = g_value_array_get_nth (array, i);
factory = g_value_get_object (value);
/* get the templates from the element factory */
templates = gst_element_factory_get_static_pad_templates (factory);
for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
GstStaticPadTemplate *templ = walk->data;
/* we only care about the sink templates */
if (templ->direction == GST_PAD_SINK) {
GstCaps *intersect;
GstCaps *tmpl_caps;
/* try to intersect the caps with the caps of the template */
tmpl_caps = gst_static_caps_get (&templ->static_caps);
/* FIXME, intersect is not the right method, we ideally want to check
* for a subset here */
intersect = gst_caps_intersect (caps, tmpl_caps);
gst_caps_unref (tmpl_caps);
/* check if the intersection is empty */
if (!gst_caps_is_empty (intersect)) {
/* non empty intersection, we can use this element */
GValue resval = { 0, };
g_value_init (&resval, G_TYPE_OBJECT);
g_value_set_object (&resval, factory);
g_value_array_append (result, &resval);
g_value_unset (&resval);
gst_caps_unref (intersect);
break;
}
gst_caps_unref (intersect);
}
}
}
return result;
}
/* check if caps are found on given element */
static gboolean
check_caps_compatibility (GstElementFactory *factory,
GstCaps *caps, GstCaps **matched_caps)
{
const GList *pads;
GstStaticPadTemplate *padtemplate;
GstCaps *padtemplate_caps = NULL;
if (!gst_element_factory_get_num_pad_templates (factory))
{
return FALSE;
}
pads = gst_element_factory_get_static_pad_templates (factory);
while (pads)
{
padtemplate = (GstStaticPadTemplate *) (pads->data);
pads = g_list_next (pads);
padtemplate_caps = gst_static_caps_get (&padtemplate->static_caps);
if (gst_caps_is_any (padtemplate_caps))
{
goto next;
}
if (caps)
{
GstCaps *intersection = gst_caps_intersect (padtemplate_caps, caps);
gboolean have_intersection = !gst_caps_is_empty (intersection);
if (have_intersection)
{
*matched_caps = intersection;
gst_caps_unref (padtemplate_caps);
return TRUE;
}
gst_caps_unref (intersection);
}
next:
if (padtemplate_caps)
{
gst_caps_unref (padtemplate_caps);
}
}
*matched_caps = NULL;
return FALSE;
}
static gboolean
factory_can_intersect (GstAutoConvert * autoconvert,
GstElementFactory * factory, GstPadDirection direction, GstCaps * caps)
{
const GList *templates;
gint has_direction = FALSE;
gboolean ret = FALSE;
g_return_val_if_fail (factory != NULL, FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
templates = gst_element_factory_get_static_pad_templates (factory);
while (templates) {
GstStaticPadTemplate *template = (GstStaticPadTemplate *) templates->data;
/**
* gst_element_factory_list_filter:
* @list: (transfer none) (element-type Gst.ElementFactory): a #GList of
* #GstElementFactory to filter
* @caps: a #GstCaps
* @direction: a #GstPadDirection to filter on
* @subsetonly: whether to filter on caps subsets or not.
*
* Filter out all the elementfactories in @list that can handle @caps in
* the given direction.
*
* If @subsetonly is %TRUE, then only the elements whose pads templates
* are a complete superset of @caps will be returned. Else any element
* whose pad templates caps can intersect with @caps will be returned.
*
* Returns: (transfer full) (element-type Gst.ElementFactory): a #GList of
* #GstElementFactory elements that match the given requisits.
* Use #gst_plugin_feature_list_free after usage.
*
* Since: 0.10.31
*/
GList *
gst_element_factory_list_filter (GList * list,
const GstCaps * caps, GstPadDirection direction, gboolean subsetonly)
{
GQueue results = G_QUEUE_INIT;
GST_DEBUG ("finding factories");
/* loop over all the factories */
for (; list; list = list->next) {
GstElementFactory *factory;
const GList *templates;
GList *walk;
factory = (GstElementFactory *) list->data;
GST_DEBUG ("Trying %s",
gst_plugin_feature_get_name ((GstPluginFeature *) factory));
/* get the templates from the element factory */
templates = gst_element_factory_get_static_pad_templates (factory);
for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
GstStaticPadTemplate *templ = walk->data;
/* we only care about the sink templates */
if (templ->direction == direction) {
GstCaps *tmpl_caps;
/* try to intersect the caps with the caps of the template */
tmpl_caps = gst_static_caps_get (&templ->static_caps);
/* FIXME, intersect is not the right method, we ideally want to check
* for a subset here */
/* check if the intersection is empty */
if ((subsetonly && gst_caps_is_subset (caps, tmpl_caps)) ||
(!subsetonly && gst_caps_can_intersect (caps, tmpl_caps))) {
/* non empty intersection, we can use this element */
g_queue_push_tail (&results, gst_object_ref (factory));
gst_caps_unref (tmpl_caps);
break;
}
gst_caps_unref (tmpl_caps);
}
}
}
return results.head;
}
/***
* !reimp
*/
QStringList Backend::availableMimeTypes() const
{
QStringList availableMimeTypes;
if (!isValid())
return availableMimeTypes;
GstElementFactory *mpegFactory;
// Add mp3 as a separate mime type as people are likely to look for it.
if ((mpegFactory = gst_element_factory_find ("ffmpeg")) ||
(mpegFactory = gst_element_factory_find ("mad"))) {
availableMimeTypes << QLatin1String("audio/x-mp3");
gst_object_unref(GST_OBJECT(mpegFactory));
}
// Iterate over all audio and video decoders and extract mime types from sink caps
GList* factoryList = gst_registry_get_feature_list(gst_registry_get_default (), GST_TYPE_ELEMENT_FACTORY);
for (GList* iter = g_list_first(factoryList) ; iter != NULL ; iter = g_list_next(iter)) {
GstPluginFeature *feature = GST_PLUGIN_FEATURE(iter->data);
QString klass = gst_element_factory_get_klass(GST_ELEMENT_FACTORY(feature));
if (klass == QLatin1String("Codec/Decoder/Audio") ||
klass == QLatin1String("Codec/Decoder/Video")) {
const GList *static_templates;
GstElementFactory *factory = GST_ELEMENT_FACTORY(feature);
static_templates = gst_element_factory_get_static_pad_templates(factory);
for (; static_templates != NULL ; static_templates = static_templates->next) {
GstStaticPadTemplate *padTemplate = (GstStaticPadTemplate *) static_templates->data;
if (padTemplate && padTemplate->direction == GST_PAD_SINK) {
GstCaps *caps = gst_static_pad_template_get_caps (padTemplate);
if (caps) {
const GstStructure* capsStruct = gst_caps_get_structure (caps, 0);
QString mime = QString::fromUtf8(gst_structure_get_name (capsStruct));
if (!availableMimeTypes.contains(mime))
availableMimeTypes.append(mime);
}
}
}
}
}
g_list_free(factoryList);
availableMimeTypes.sort();
return availableMimeTypes;
}
static void
print_pad_templates_info (GstElement * element, GstElementFactory * factory)
{
GstElementClass *gstelement_class;
const GList *pads;
GstStaticPadTemplate *padtemplate;
n_print ("Pad Templates:\n");
if (gst_element_factory_get_num_pad_templates (factory) == 0) {
n_print (" none\n");
return;
}
gstelement_class = GST_ELEMENT_CLASS (G_OBJECT_GET_CLASS (element));
pads = gst_element_factory_get_static_pad_templates (factory);
while (pads) {
padtemplate = (GstStaticPadTemplate *) (pads->data);
pads = g_list_next (pads);
if (padtemplate->direction == GST_PAD_SRC)
n_print (" SRC template: '%s'\n", padtemplate->name_template);
else if (padtemplate->direction == GST_PAD_SINK)
n_print (" SINK template: '%s'\n", padtemplate->name_template);
else
n_print (" UNKNOWN!!! template: '%s'\n", padtemplate->name_template);
if (padtemplate->presence == GST_PAD_ALWAYS)
n_print (" Availability: Always\n");
else if (padtemplate->presence == GST_PAD_SOMETIMES)
n_print (" Availability: Sometimes\n");
else if (padtemplate->presence == GST_PAD_REQUEST) {
n_print (" Availability: On request\n");
n_print (" Has request_new_pad() function: %s\n",
GST_DEBUG_FUNCPTR_NAME (gstelement_class->request_new_pad));
} else
n_print (" Availability: UNKNOWN!!!\n");
if (padtemplate->static_caps.string) {
n_print (" Capabilities:\n");
print_caps (gst_static_caps_get (&padtemplate->static_caps), " ");
}
n_print ("\n");
}
}
/*
* Method: pad_templates
*
* Requests all pad templates of factory.
*
* Returns: an array of Gst::PadTemplate objects.
*/
static VALUE
rb_gst_elementfactory_get_pad_templates (VALUE self)
{
GstElementFactory *factory;
const GList *list;
VALUE arr;
arr = rb_ary_new();
factory = RGST_ELEMENT_FACTORY(self);
for (list = gst_element_factory_get_static_pad_templates(factory);
list != NULL;
list = g_list_next(list)) {
GstStaticPadTemplate *pad = list->data;
rb_ary_push(arr, GST_STATIC_PAD_TEMPLATE2RVAL(pad));
}
return arr;
}
gboolean sink_factory_filter(GstPluginFeature* feature, gpointer data) {
GstCaps* caps = (GstCaps*)data;
if (!GST_IS_ELEMENT_FACTORY(feature)) return FALSE;
const GList* static_pads =
gst_element_factory_get_static_pad_templates(GST_ELEMENT_FACTORY(feature));
int not_any_number = 0;
for (GList* item = (GList*)static_pads; item; item = item->next) {
GstStaticPadTemplate* padTemplate = (GstStaticPadTemplate*)item->data;
GstPadTemplate* pad = gst_static_pad_template_get(padTemplate);
GstCaps* padCaps = gst_pad_template_get_caps(pad);
if (!gst_caps_is_any(padCaps)) not_any_number++;
}
if (not_any_number == 0) return FALSE;
if (!gst_element_factory_list_is_type(GST_ELEMENT_FACTORY(feature),
GST_ELEMENT_FACTORY_TYPE_DECODABLE))
return FALSE;
if (!gst_element_factory_can_sink_all_caps(GST_ELEMENT_FACTORY(feature), caps)) return FALSE;
return TRUE;
}
static void
print_plugin_automatic_install_info_codecs (GstElementFactory * factory)
{
GstPadDirection direction;
const gchar *type_name;
const gchar *klass;
const GList *static_templates, *l;
GstCaps *caps = NULL;
guint i, num;
klass =
gst_element_factory_get_metadata (factory, GST_ELEMENT_METADATA_KLASS);
g_return_if_fail (klass != NULL);
if (strstr (klass, "Demuxer") ||
strstr (klass, "Decoder") ||
strstr (klass, "Depay") || strstr (klass, "Parser")) {
type_name = "decoder";
direction = GST_PAD_SINK;
} else if (strstr (klass, "Muxer") ||
strstr (klass, "Encoder") || strstr (klass, "Pay")) {
type_name = "encoder";
direction = GST_PAD_SRC;
} else {
return;
}
/* decoder/demuxer sink pads should always be static and there should only
* be one, the same applies to encoders/muxers and source pads */
static_templates = gst_element_factory_get_static_pad_templates (factory);
for (l = static_templates; l != NULL; l = l->next) {
GstStaticPadTemplate *tmpl = NULL;
tmpl = (GstStaticPadTemplate *) l->data;
if (tmpl->direction == direction) {
caps = gst_static_pad_template_get_caps (tmpl);
break;
}
}
if (caps == NULL) {
g_printerr ("Couldn't find static pad template for %s '%s'\n",
type_name, GST_OBJECT_NAME (factory));
return;
}
caps = gst_caps_make_writable (caps);
num = gst_caps_get_size (caps);
for (i = 0; i < num; ++i) {
GstStructure *s;
gchar *s_str;
s = gst_caps_get_structure (caps, i);
/* remove fields that are almost always just MIN-MAX of some sort
* in order to make the caps look less messy */
gst_structure_remove_field (s, "pixel-aspect-ratio");
gst_structure_remove_field (s, "framerate");
gst_structure_remove_field (s, "channels");
gst_structure_remove_field (s, "width");
gst_structure_remove_field (s, "height");
gst_structure_remove_field (s, "rate");
gst_structure_remove_field (s, "depth");
gst_structure_remove_field (s, "clock-rate");
s_str = gst_structure_to_string (s);
g_print ("%s-%s\n", type_name, s_str);
g_free (s_str);
}
gst_caps_unref (caps);
}
int
main (int argc,
char *argv[])
{
gst_init (&argc, &argv);
GstElementFactory *factory = gst_element_factory_find("ffmpegcolorspace");
const GList *list = gst_element_factory_get_static_pad_templates(factory);
while (NULL != list) {
GstStaticPadTemplate *templ = (GstStaticPadTemplate *)list->data;
// name
g_print("+++ template name %s\n", templ->name_template);
// direction
g_print ("direction: ");
switch (templ->direction) {
case GST_PAD_UNKNOWN:
g_print ("unknown\n");
break;
case GST_PAD_SRC:
g_print ("src\n");
break;
case GST_PAD_SINK:
g_print ("sink\n");
break;
default:
g_print ("this is a bug\n");
break;
}
// presence
g_print ("presence: ");
switch (templ->presence) {
case GST_PAD_ALWAYS:
g_print ("always\n");
break;
case GST_PAD_SOMETIMES:
g_print ("sometimes\n");
break;
case GST_PAD_REQUEST:
g_print ("request\n");
break;
default:
g_print ("this is a bug\n");
break;
}
// caps
GstCaps *caps = gst_static_caps_get(&templ->static_caps);
// copying for removing fields in struture
GstCaps *copy = gst_caps_copy(caps);
gst_caps_unref(caps);
guint size = gst_caps_get_size(copy);
guint i = 0;
g_print("size %u\n", size);
for (; i < size; i++) {
GstStructure *structure = gst_caps_get_structure(copy, i);
gst_structure_remove_fields(structure,
"format", "width", "height", "framerate",
NULL);
GstCaps *copy_nth = gst_caps_copy_nth(copy, i);
gchar *caps_str = gst_caps_to_string(copy_nth);
g_print(" caps num %u is %s\n", i, caps_str);
g_free(caps_str);
gst_caps_unref(copy_nth);
}
gst_caps_unref(copy);
list = g_list_next(list);
}
gst_object_unref(factory);
gst_deinit(); // for memory testing
return 0;
}
static gboolean
rsndec_factory_filter (GstPluginFeature * feature, RsnDecFactoryFilterCtx * ctx)
{
GstElementFactory *factory;
guint rank;
const gchar *klass;
const GList *templates;
GList *walk;
gboolean can_sink = FALSE;
/* we only care about element factories */
if (!GST_IS_ELEMENT_FACTORY (feature))
return FALSE;
factory = GST_ELEMENT_FACTORY (feature);
klass = gst_element_factory_get_klass (factory);
/* only decoders can play */
if (strstr (klass, "Decoder") == NULL)
return FALSE;
/* only select elements with autoplugging rank */
rank = gst_plugin_feature_get_rank (feature);
if (rank < GST_RANK_MARGINAL)
return FALSE;
/* See if the element has a sink pad that can possibly sink this caps */
/* get the templates from the element factory */
templates = gst_element_factory_get_static_pad_templates (factory);
for (walk = (GList *) templates; walk && !can_sink; walk = g_list_next (walk)) {
GstStaticPadTemplate *templ = walk->data;
/* we only care about the sink templates */
if (templ->direction == GST_PAD_SINK) {
GstCaps *intersect;
GstCaps *tmpl_caps;
/* try to intersect the caps with the caps of the template */
tmpl_caps = gst_static_caps_get (&templ->static_caps);
intersect = gst_caps_intersect (ctx->desired_caps, tmpl_caps);
gst_caps_unref (tmpl_caps);
/* check if the intersection is empty */
if (!gst_caps_is_empty (intersect)) {
/* non empty intersection, we can use this element */
can_sink = TRUE;
ctx->decoder_caps = gst_caps_merge (ctx->decoder_caps, intersect);
} else
gst_caps_unref (intersect);
}
}
if (can_sink) {
GST_DEBUG ("Found decoder element %s (%s)",
gst_element_factory_get_longname (factory),
gst_plugin_feature_get_name (feature));
}
return can_sink;
}
/* if element caps already in list, will make sure Transform elements have
* priority and replace old ones */
static GList *
create_codec_cap_list (GstElementFactory *factory,
GstPadDirection direction,
GList *list,
GstCaps *rtp_caps)
{
const GList *pads = gst_element_factory_get_static_pad_templates (factory);
gint i;
/* Let us look at each pad for stuff to add*/
while (pads)
{
GstCaps *caps = NULL;
GstStaticPadTemplate *padtemplate = NULL;
padtemplate = (GstStaticPadTemplate *) (pads->data);
pads = g_list_next (pads);
if (padtemplate->direction != direction)
continue;
if (padtemplate->presence != GST_PAD_ALWAYS) {
continue;
}
caps = gst_static_pad_template_get_caps (padtemplate);
/*
DEBUG ("%s caps are %s", gst_plugin_feature_get_name (GST_PLUGIN_FEATURE
(factory)), gst_caps_to_string (caps));
*/
/* skips caps ANY */
if (!caps || gst_caps_is_any (caps))
{
goto done;
}
/* let us add one entry to the list per media type */
for (i = 0; i < gst_caps_get_size (caps); i++)
{
CodecCap *entry = NULL;
GList *found_item = NULL;
GstStructure *structure = gst_caps_get_structure (caps, i);
GstCaps *cur_caps = NULL;
/* FIXME fix this in gstreamer! The rtpdepay element is bogus, it claims to
* be a depayloader yet has application/x-rtp on both sides and does
* absolutely nothing */
/* Let's check if media caps are really media caps, this is to deal with
* wierd elements such as rtpdepay that says it's a depayloader but has
* application/x-rtp on src and sink pads */
const gchar *name = gst_structure_get_name (structure);
if (g_ascii_strcasecmp (name, "application/x-rtp") == 0)
{
GST_DEBUG ("skipping %s : %s",
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)), name);
continue;
}
cur_caps = gst_caps_new_full (gst_structure_copy (structure), NULL);
/* let's check if this caps is already in the list, if so let's replace
* that CodecCap list instead of creating a new one */
/* we need to compare both media caps and rtp caps */
found_item = g_list_find_custom (list, cur_caps,
(GCompareFunc)compare_media_caps);
if (found_item)
{
entry = (CodecCap *)found_item->data;
/* if RTP caps exist and don't match nullify entry */
if (rtp_caps && compare_rtp_caps (found_item->data, rtp_caps))
{
entry = NULL;
}
}
if (!entry)
{
entry = g_slice_new0 (CodecCap);
entry->caps = cur_caps;
if (rtp_caps)
{
entry->rtp_caps = rtp_caps;
gst_caps_ref (rtp_caps);
}
list = g_list_append (list, entry);
entry->element_list1 = g_list_prepend (NULL,
g_list_prepend (NULL, factory));
gst_object_ref (factory);
}
else
{
entry->element_list1->data =
g_list_append (entry->element_list1->data, factory);
gst_object_ref (factory);
if (rtp_caps) {
if (entry->rtp_caps) {
GstCaps *tmp = gst_caps_intersect (rtp_caps, entry->rtp_caps);
gst_caps_unref (entry->rtp_caps);
entry->rtp_caps = tmp;
} else {
entry->rtp_caps = gst_caps_ref (rtp_caps);
/* This shouldn't happen, its we're looking at rtp elements
* or we're not */
g_assert_not_reached ();
}
}
entry->caps = gst_caps_merge (cur_caps, entry->caps);
}
}
done:
if (caps != NULL) {
gst_caps_unref (caps);
}
}
return list;
}
int
main (int argc,
char *argv[])
{
/* Initialisation */
gst_init (&argc, &argv);
GList *element_list = gst_element_factory_list_get_elements (GST_ELEMENT_FACTORY_TYPE_DEPAYLOADER,
GST_RANK_NONE);
GList *iter = element_list;
while (iter != NULL)
{
g_print ("+++++\n");
g_print ("%s -- ", gst_element_factory_get_longname ((GstElementFactory *)iter->data));
g_print ("%s\n", gst_plugin_feature_get_name ((GstPluginFeature *)iter->data));
const GList *static_pads =
gst_element_factory_get_static_pad_templates ((GstElementFactory *)iter->data);
while (NULL != static_pads)
{
GstStaticPadTemplate *pad = (GstStaticPadTemplate *)static_pads->data;
//the following is EMPTY gchar *caps_str = gst_caps_to_string (&pad->static_caps.caps);
//g_free (caps_str);
/* g_print ("string: %s\n", */
/* pad->static_caps.string); */
GstCaps *caps = gst_caps_from_string (pad->static_caps.string);
guint caps_size = gst_caps_get_size (caps);
if (! gst_caps_is_any (caps))
for (guint i = caps_size; i > 0; i--)
{
GstStructure *caps_struct = gst_caps_get_structure (caps, i-1);
if (gst_structure_has_name (caps_struct,"application/x-rtp"))
{
g_print ("string: %s\n",
gst_structure_to_string (caps_struct));
{//payload
const GValue *val = gst_structure_get_value (caps_struct, "payload");
if (NULL != val)
{
//g_print ("payload struct type %s\n", G_VALUE_TYPE_NAME (val));
if(GST_VALUE_HOLDS_INT_RANGE(val))
{
g_print ("payload min %d\n", gst_value_get_int_range_min (val));
}
if (GST_VALUE_HOLDS_LIST(val))
{
for (guint i = 0; i < gst_value_list_get_size (val); i++)
{
const GValue *item_val = gst_value_list_get_value (val, i);
g_print ("payload list %d\n", g_value_get_int (item_val));
}
}
if (G_VALUE_HOLDS_INT (val))
{
g_print ("payload int %d\n", g_value_get_int (val));
}
}
}
{ //encodeing-name
const GValue *val = gst_structure_get_value (caps_struct, "encoding-name");
if (NULL != val)
{
//g_print ("encoding-name struct type %s\n", G_VALUE_TYPE_NAME (val));
if (GST_VALUE_HOLDS_LIST(val))
{
for (guint i = 0; i < gst_value_list_get_size (val); i++)
{
const GValue *item_val = gst_value_list_get_value (val, i);
g_print ("encoding-name list %s\n", g_value_get_string (item_val));
}
}
if (G_VALUE_HOLDS_STRING (val))
{
g_print ("encoding-name string %s\n", g_value_get_string (val));
}
}
}
{//media
const GValue *val = gst_structure_get_value (caps_struct, "media");
if (NULL != val)
{
if (GST_VALUE_HOLDS_LIST(val))
{
for (guint i = 0; i < gst_value_list_get_size (val); i++)
{
const GValue *item_val = gst_value_list_get_value (val, i);
g_print ("media list %s\n", g_value_get_string (item_val));
}
}
if (G_VALUE_HOLDS_STRING (val))
{
g_print ("media string %s\n", g_value_get_string (val));
}
}
}
{//clock rate
const GValue *val = gst_structure_get_value (caps_struct, "clock-rate");
if (NULL != val)
{
//g_print ("payload struct type %s\n", G_VALUE_TYPE_NAME (val));
if(GST_VALUE_HOLDS_INT_RANGE(val))
{
g_print ("clock-rate min %d\n", gst_value_get_int_range_min (val));
}
if (GST_VALUE_HOLDS_LIST(val))
{
for (guint i = 0; i < gst_value_list_get_size (val); i++)
{
const GValue *item_val = gst_value_list_get_value (val, i);
g_print ("clock-rate list %d\n", g_value_get_int (item_val));
}
}
if (G_VALUE_HOLDS_INT (val))
{
g_print ("clock-rate int %d\n", g_value_get_int (val));
}
}
}
/* g_print ("\nencoding-name %s\n", */
/* gst_structure_get_string (caps_struct, */
/* "encoding-name")); */
}
}
static_pads = g_list_next (static_pads);
gst_caps_unref (caps);
}
iter = g_list_next (iter);
}
gst_plugin_feature_list_free (element_list);
return 0;
}
static void
try_to_plug (GstPad *pad,
const GstCaps *caps)
{
GstObject *parent = GST_OBJECT (GST_OBJECT_PARENT (pad));
const gchar *mime;
const GList *item;
GstCaps *res, *audiocaps;
/* don't plug if we're already plugged - FIXME: memleak for pad */
if (GST_PAD_IS_LINKED (gst_element_get_pad (audiosink, "sink"))) {
g_print ("Omitting link for pad %s:%s because we're already linked\n",
GST_OBJECT_NAME (parent), GST_OBJECT_NAME (pad));
return;
}
/* as said above, we only try to plug audio... Omit video */
mime = gst_structure_get_name (gst_caps_get_structure (caps, 0));
if (g_strrstr (mime, "video")) {
g_print ("Omitting link for pad %s:%s because mimetype %s is non-audio\n",
GST_OBJECT_NAME (parent), GST_OBJECT_NAME (pad), mime);
return;
}
/* can it link to the audiopad? */
audiocaps = gst_pad_get_caps (gst_element_get_pad (audiosink, "sink"));
res = gst_caps_intersect (caps, audiocaps);
if (res && !gst_caps_is_empty (res)) {
g_print ("Found pad to link to audiosink - plugging is now done\n");
close_link (pad, audiosink, "sink", NULL);
gst_caps_unref (audiocaps);
gst_caps_unref (res);
return;
}
gst_caps_unref (audiocaps);
gst_caps_unref (res);
/* try to plug from our list */
for (item = factories; item != NULL; item = item->next) {
GstElementFactory *factory = GST_ELEMENT_FACTORY (item->data);
const GList *pads;
for (pads = gst_element_factory_get_static_pad_templates (factory);
pads != NULL; pads = pads->next) {
GstStaticPadTemplate *templ = pads->data;
/* find the sink template - need an always pad*/
if (templ->direction != GST_PAD_SINK ||
templ->presence != GST_PAD_ALWAYS) {
continue;
}
/* can it link? */
res = gst_caps_intersect (caps,
gst_static_caps_get (&templ->static_caps));
if (res && !gst_caps_is_empty (res)) {
GstElement *element;
gchar *name_template = g_strdup (templ->name_template);
/* close link and return */
gst_caps_unref (res);
element = gst_element_factory_create (factory, NULL);
close_link (pad, element, name_template,
gst_element_factory_get_static_pad_templates (factory));
g_free (name_template);
return;
}
gst_caps_unref (res);
/* we only check one sink template per factory, so move on to the
* next factory now */
break;
}
}
/* if we get here, no item was found */
g_print ("No compatible pad found to decode %s on %s:%s\n",
mime, GST_OBJECT_NAME (parent), GST_OBJECT_NAME (pad));
}
