static void
print_pad_info (GstElement * element)
{
const GList *pads;
GstPad *pad;
n_print ("\n");
n_print ("Pads:\n");
if (!element->numpads) {
n_print (" none\n");
return;
}
pads = element->pads;
while (pads) {
gchar *name;
pad = GST_PAD (pads->data);
pads = g_list_next (pads);
n_print ("");
name = gst_pad_get_name (pad);
if (gst_pad_get_direction (pad) == GST_PAD_SRC)
g_print (" SRC: '%s'", name);
else if (gst_pad_get_direction (pad) == GST_PAD_SINK)
g_print (" SINK: '%s'", name);
else
g_print (" UNKNOWN!!!: '%s'", name);
g_free (name);
g_print ("\n");
n_print (" Implementation:\n");
if (pad->chainfunc)
n_print (" Has chainfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->chainfunc));
if (pad->getrangefunc)
n_print (" Has getrangefunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->getrangefunc));
if (pad->eventfunc != gst_pad_event_default)
n_print (" Has custom eventfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->eventfunc));
if (pad->queryfunc != gst_pad_query_default)
n_print (" Has custom queryfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->queryfunc));
if (pad->querytypefunc != gst_pad_get_query_types_default) {
const GstQueryType *query_types = gst_pad_get_query_types (pad);
if (query_types) {
n_print (" Provides query types:\n");
print_query_types (query_types);
}
}
if (pad->iterintlinkfunc != gst_pad_iterate_internal_links_default)
n_print (" Has custom iterintlinkfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->iterintlinkfunc));
if (pad->bufferallocfunc)
n_print (" Has bufferallocfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->bufferallocfunc));
if (pad->getcapsfunc)
n_print (" Has getcapsfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->getcapsfunc));
if (pad->setcapsfunc)
n_print (" Has setcapsfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->setcapsfunc));
/* gst_pad_acceptcaps_default is static :/ */
if (pad->acceptcapsfunc)
n_print (" Has acceptcapsfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->acceptcapsfunc));
if (pad->fixatecapsfunc)
n_print (" Has fixatecapsfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->fixatecapsfunc));
if (pad->padtemplate)
n_print (" Pad Template: '%s'\n", pad->padtemplate->name_template);
if (pad->caps) {
n_print (" Capabilities:\n");
print_caps (pad->caps, " ");
}
}
}
bool GStreamerGWorld::enterFullscreen()
{
if (m_dynamicPadName)
return false;
if (!m_videoWindow)
m_videoWindow = PlatformVideoWindow::createWindow();
GstElement* platformVideoSink = gst_element_factory_make("autovideosink", "platformVideoSink");
GstElement* colorspace = gst_element_factory_make("ffmpegcolorspace", "colorspace");
GstElement* queue = gst_element_factory_make("queue", "queue");
GstElement* videoScale = gst_element_factory_make("videoscale", "videoScale");
// Get video sink bin and the tee inside.
GRefPtr<GstElement> videoSink;
GstElement* sinkPtr = 0;
g_object_get(m_pipeline, "video-sink", &sinkPtr, NULL);
videoSink = adoptGRef(sinkPtr);
GRefPtr<GstElement> tee = adoptGRef(gst_bin_get_by_name(GST_BIN(videoSink.get()), "videoTee"));
// Add and link a queue, ffmpegcolorspace, videoscale and sink in the bin.
gst_bin_add_many(GST_BIN(videoSink.get()), platformVideoSink, videoScale, colorspace, queue, NULL);
// Faster elements linking.
gst_element_link_pads_full(queue, "src", colorspace, "sink", GST_PAD_LINK_CHECK_NOTHING);
gst_element_link_pads_full(colorspace, "src", videoScale, "sink", GST_PAD_LINK_CHECK_NOTHING);
gst_element_link_pads_full(videoScale, "src", platformVideoSink, "sink", GST_PAD_LINK_CHECK_NOTHING);
// Link a new src pad from tee to queue.
GRefPtr<GstPad> srcPad = adoptGRef(gst_element_get_request_pad(tee.get(), "src%d"));
GRefPtr<GstPad> sinkPad = adoptGRef(gst_element_get_static_pad(queue, "sink"));
gst_pad_link(srcPad.get(), sinkPad.get());
m_dynamicPadName.set(gst_pad_get_name(srcPad.get()));
// Synchronize the new elements with pipeline state. If it's
// paused limit the state change to pre-rolling.
GstState state;
gst_element_get_state(m_pipeline, &state, 0, 0);
if (state < GST_STATE_PLAYING)
state = GST_STATE_READY;
gst_element_set_state(platformVideoSink, state);
gst_element_set_state(videoScale, state);
gst_element_set_state(colorspace, state);
gst_element_set_state(queue, state);
// Query the current media segment informations and send them towards
// the new tee branch downstream.
GstQuery* query = gst_query_new_segment(GST_FORMAT_TIME);
gboolean queryResult = gst_element_query(m_pipeline, query);
if (!queryResult) {
gst_query_unref(query);
return true;
}
GstFormat format;
gint64 position;
if (!gst_element_query_position(m_pipeline, &format, &position))
position = 0;
gdouble rate;
gint64 startValue, stopValue;
gst_query_parse_segment(query, &rate, &format, &startValue, &stopValue);
GstEvent* event = gst_event_new_new_segment(FALSE, rate, format, startValue, stopValue, position);
gst_pad_push_event(srcPad.get(), event);
gst_query_unref(query);
return true;
}
/**
* recursively iterate all our pads and search adjacent elements
*/
static GooComponent *
find_goo_component (GstElement *elem, SearchContext *ctx)
{
GstIterator *itr;
gpointer item;
GooComponent *component = NULL;
/* check if we've already examined this element, to prevent loops: */
if (already_visited (ctx->visited_nodes, elem))
{
GST_INFO ("already visited elem=%s (%s)", gst_element_get_name (elem), G_OBJECT_TYPE_NAME (elem));
return NULL;
}
GST_INFO ("elem=%s (%s)", gst_element_get_name (elem), G_OBJECT_TYPE_NAME (elem));
/* note: we don't handle the case of the underlying data structure changing
* while iterating.. we just bail out and the user needs to restart.
*/
for( itr = gst_element_iterate_pads (elem);
gst_iterator_next (itr, &item) == GST_ITERATOR_OK && !component;
gst_object_unref (item) )
{
GstElement *adjacent_elem = NULL;
GstPad *pad = GST_PAD (item);
GstPad *peer = gst_pad_get_peer (pad);
GST_INFO ("found pad: %s (%s)", gst_pad_get_name (pad), G_OBJECT_TYPE_NAME (pad));
if (G_UNLIKELY (peer == NULL))
{
GST_INFO ("NULL peer.. not connected yet?");
continue;
}
/* in the case of GstGhostPad (and probably other proxy pads)
* the parent is actually the pad we are a proxy for, so
* keep looping until we find the GstElement
*/
while(TRUE)
{
GstObject *obj = gst_pad_get_parent (peer);
if( GST_IS_PAD(obj) )
{
gst_object_unref (peer);
peer = GST_PAD (obj);
}
else
{
adjacent_elem = GST_ELEMENT (obj);
break;
}
}
if (G_UNLIKELY (adjacent_elem == NULL))
{
gst_object_unref (peer);
GST_INFO ("Cannot find a adjacent element");
continue;
}
GST_INFO ("found adjacent_elem: %s", gst_element_get_name (adjacent_elem));
component = check_for_goo_component (adjacent_elem, ctx);
if (component == NULL)
{
/* if adjacent_elem is itself a bin, we need to search the
* contents of that bin:
*/
if( GST_IS_BIN (adjacent_elem) )
{
component = find_goo_component_in_bin (GST_BIN (adjacent_elem), ctx);
}
}
if (component == NULL)
{
/* if we didn't find our component, recursively search
* the contents of adjacent_elem's pads:
*/
component = find_goo_component (adjacent_elem, ctx);
}
/* cleanup: */
gst_object_unref (adjacent_elem);
gst_object_unref (peer);
}
gst_iterator_free (itr);
return component;
}
static void
link_sinkpad_cb (GstPad * pad, GstPad * peer, gpointer user_data)
{
KmsRecorderEndpoint *self = KMS_RECORDER_ENDPOINT (user_data);
KmsSinkPadData *sinkdata;
GstAppSinkCallbacks callbacks;
GstElement *appsink, *appsrc;
KmsRecordingProfile profile;
DataEvtProbe *data;
KmsMediaType type;
GstPad *target;
gchar *id, *key;
target = gst_ghost_pad_get_target (GST_GHOST_PAD (pad));
if (target == NULL) {
GST_ERROR_OBJECT (pad, "No target pad set");
return;
}
key = g_object_get_qdata (G_OBJECT (target), kms_pad_id_key_quark ());
if (key == NULL) {
GST_ERROR_OBJECT (pad, "No identifier assigned");
g_object_unref (&target);
return;
}
KMS_ELEMENT_LOCK (KMS_ELEMENT (self));
sinkdata = g_hash_table_lookup (self->priv->sink_pad_data, key);
if (sinkdata == NULL) {
GST_ERROR_OBJECT (self, "Invalid pad %" GST_PTR_FORMAT " connected %"
GST_PTR_FORMAT, pad, peer);
goto end;
}
switch (sinkdata->type) {
case KMS_ELEMENT_PAD_TYPE_AUDIO:
type = KMS_MEDIA_TYPE_AUDIO;
break;
case KMS_ELEMENT_PAD_TYPE_VIDEO:
type = KMS_MEDIA_TYPE_VIDEO;
break;
default:
GST_ERROR_OBJECT (self, "Invalid pad %" GST_PTR_FORMAT " connected %"
GST_PTR_FORMAT, pad, peer);
goto end;
}
profile = self->priv->profile;
GST_DEBUG_OBJECT (pad, "linked to %" GST_PTR_FORMAT, peer);
id = gst_pad_get_name (pad);
appsrc = kms_base_media_muxer_add_src (self->priv->mux, type, id);
if (appsrc == NULL) {
GST_ERROR_OBJECT (self, "Can not get appsrc for pad %" GST_PTR_FORMAT, pad);
KMS_ELEMENT_UNLOCK (KMS_ELEMENT (self));
g_object_unref (target);
g_free (id);
return;
}
gst_pad_set_element_private (pad, g_object_ref (appsrc));
g_hash_table_insert (self->priv->srcs, id, g_object_ref (appsrc));
if (sinkdata->sink_probe != 0UL) {
gst_pad_remove_probe (target, sinkdata->sink_probe);
}
callbacks.eos = recv_eos;
callbacks.new_preroll = NULL;
callbacks.new_sample = recv_sample;
appsink = gst_pad_get_parent_element (target);
gst_app_sink_set_callbacks (GST_APP_SINK (appsink), &callbacks, appsrc, NULL);
g_object_unref (appsink);
data = data_evt_probe_new (appsrc, profile);
sinkdata->sink_probe =
gst_pad_add_probe (target, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
configure_pipeline_capabilities, data,
(GDestroyNotify) data_evt_probe_destroy);
end:
KMS_ELEMENT_UNLOCK (KMS_ELEMENT (self));
g_clear_object (&target);
}
int main(int argc, char *argv[]) {
GstElement *pipeline, *audio_source, *tee, *audio_queue, *audio_convert, *audio_resample, *audio_sink;
GstElement *video_queue, *visual, *video_convert, *video_sink;
GstBus *bus;
GstMessage *msg;
GstPadTemplate *tee_src_pad_template;
GstPad *tee_audio_pad, *tee_video_pad;
GstPad *queue_audio_pad, *queue_video_pad;
/* Initialize GStreamer */
gst_init (&argc, &argv);
/* Create the elements */
audio_source = gst_element_factory_make ("audiotestsrc", "audio_source");
tee = gst_element_factory_make ("tee", "tee");
audio_queue = gst_element_factory_make ("queue", "audio_queue");
audio_convert = gst_element_factory_make ("audioconvert", "audio_convert");
audio_resample = gst_element_factory_make ("audioresample", "audio_resample");
audio_sink = gst_element_factory_make ("autoaudiosink", "audio_sink");
video_queue = gst_element_factory_make ("queue", "video_queue");
visual = gst_element_factory_make ("wavescope", "visual");
video_convert = gst_element_factory_make ("videoconvert", "video_convert");
video_sink = gst_element_factory_make ("autovideosink", "video_sink");
/* Create the empty pipeline */
pipeline = gst_pipeline_new ("test-pipeline");
if (!pipeline || !audio_source || !tee || !audio_queue || !audio_convert || !audio_resample || !audio_sink ||
!video_queue || !visual || !video_convert || !video_sink) {
g_printerr ("Not all elements could be created.\n");
return -1;
}
/* Configure elements */
g_object_set (audio_source, "freq", 215.0f, NULL);
g_object_set (visual, "shader", 0, "style", 1, NULL);
/* Link all elements that can be automatically linked because they have "Always" pads */
gst_bin_add_many (GST_BIN (pipeline), audio_source, tee, audio_queue, audio_convert, audio_resample, audio_sink,
video_queue, visual, video_convert, video_sink, NULL);
if (gst_element_link_many (audio_source, tee, NULL) != TRUE ||
gst_element_link_many (audio_queue, audio_convert, audio_resample, audio_sink, NULL) != TRUE ||
gst_element_link_many (video_queue, visual, video_convert, video_sink, NULL) != TRUE) {
g_printerr ("Elements could not be linked.\n");
gst_object_unref (pipeline);
return -1;
}
/* Manually link the Tee, which has "Request" pads */
tee_src_pad_template = gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (tee), "src_%u");
tee_audio_pad = gst_element_request_pad (tee, tee_src_pad_template, NULL, NULL);
g_print ("Obtained request pad %s for audio branch.\n", gst_pad_get_name (tee_audio_pad));
queue_audio_pad = gst_element_get_static_pad (audio_queue, "sink");
tee_video_pad = gst_element_request_pad (tee, tee_src_pad_template, NULL, NULL);
g_print ("Obtained request pad %s for video branch.\n", gst_pad_get_name (tee_video_pad));
queue_video_pad = gst_element_get_static_pad (video_queue, "sink");
if (gst_pad_link (tee_audio_pad, queue_audio_pad) != GST_PAD_LINK_OK ||
gst_pad_link (tee_video_pad, queue_video_pad) != GST_PAD_LINK_OK) {
g_printerr ("Tee could not be linked.\n");
gst_object_unref (pipeline);
return -1;
}
gst_object_unref (queue_audio_pad);
gst_object_unref (queue_video_pad);
/* Start playing the pipeline */
gst_element_set_state (pipeline, GST_STATE_PLAYING);
/* Wait until error or EOS */
bus = gst_element_get_bus (pipeline);
msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
/* Release the request pads from the Tee, and unref them */
gst_element_release_request_pad (tee, tee_audio_pad);
gst_element_release_request_pad (tee, tee_video_pad);
gst_object_unref (tee_audio_pad);
gst_object_unref (tee_video_pad);
/* Free resources */
if (msg != NULL)
gst_message_unref (msg);
gst_object_unref (bus);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return 0;
}
bool GStreamerGWorld::enterFullscreen()
{
if (m_dynamicPadName)
return false;
if (!m_videoWindow)
m_videoWindow = PlatformVideoWindow::createWindow();
GstElement* platformVideoSink = gst_element_factory_make("autovideosink", "platformVideoSink");
GstElement* colorspace = gst_element_factory_make("ffmpegcolorspace", "colorspace");
GstElement* queue = gst_element_factory_make("queue", "queue");
GstElement* videoScale = gst_element_factory_make("videoscale", "videoScale");
// Get video sink bin and the tee inside.
GOwnPtr<GstElement> videoSink;
g_object_get(m_pipeline, "video-sink", &videoSink.outPtr(), NULL);
GstElement* tee = gst_bin_get_by_name(GST_BIN(videoSink.get()), "videoTee");
// Add and link a queue, ffmpegcolorspace and sink in the bin.
gst_bin_add_many(GST_BIN(videoSink.get()), platformVideoSink, videoScale, colorspace, queue, NULL);
gst_element_link_many(queue, colorspace, videoScale, platformVideoSink, NULL);
// Link a new src pad from tee to queue.
GstPad* srcPad = gst_element_get_request_pad(tee, "src%d");
GstPad* sinkPad = gst_element_get_static_pad(queue, "sink");
gst_pad_link(srcPad, sinkPad);
gst_object_unref(GST_OBJECT(sinkPad));
m_dynamicPadName = gst_pad_get_name(srcPad);
// Roll new elements to pipeline state.
gst_element_sync_state_with_parent(queue);
gst_element_sync_state_with_parent(colorspace);
gst_element_sync_state_with_parent(videoScale);
gst_element_sync_state_with_parent(platformVideoSink);
gst_object_unref(tee);
// Query the current media segment informations and send them towards
// the new tee branch downstream.
GstQuery* query = gst_query_new_segment(GST_FORMAT_TIME);
gboolean queryResult = gst_element_query(m_pipeline, query);
#if GST_CHECK_VERSION(0, 10, 30)
if (!queryResult) {
gst_query_unref(query);
gst_object_unref(GST_OBJECT(srcPad));
return true;
}
#else
// GStreamer < 0.10.30 doesn't set the query result correctly, so
// just ignore it to avoid a compilation warning.
// See https://bugzilla.gnome.org/show_bug.cgi?id=620490.
(void) queryResult;
#endif
GstFormat format;
gint64 position;
if (!gst_element_query_position(m_pipeline, &format, &position))
position = 0;
gdouble rate;
gint64 startValue, stopValue;
gst_query_parse_segment(query, &rate, &format, &startValue, &stopValue);
GstEvent* event = gst_event_new_new_segment(FALSE, rate, format, startValue, stopValue, position);
gst_pad_push_event(srcPad, event);
gst_query_unref(query);
gst_object_unref(GST_OBJECT(srcPad));
return true;
}
static gboolean
kms_recorder_endpoint_query_accept_caps (KmsElement * element, GstPad * pad,
GstQuery * query)
{
KmsRecorderEndpoint *self = KMS_RECORDER_ENDPOINT (element);
GstCaps *caps, *accept;
gboolean ret = TRUE;
switch (kms_element_get_pad_type (element, pad)) {
case KMS_ELEMENT_PAD_TYPE_VIDEO:
caps = kms_recorder_endpoint_get_caps_from_profile (self,
KMS_ELEMENT_PAD_TYPE_VIDEO);
break;
case KMS_ELEMENT_PAD_TYPE_AUDIO:
caps = kms_recorder_endpoint_get_caps_from_profile (self,
KMS_ELEMENT_PAD_TYPE_AUDIO);
break;
default:
GST_ERROR_OBJECT (pad, "unknown pad");
return FALSE;
}
if (caps == NULL) {
GST_ERROR_OBJECT (self, "Can not accept caps without profile");
gst_query_set_accept_caps_result (query, FALSE);
return TRUE;
}
gst_query_parse_accept_caps (query, &accept);
ret = gst_caps_can_intersect (accept, caps);
if (ret) {
GstElement *appsrc;
GstPad *srcpad;
gchar *id;
id = gst_pad_get_name (pad);
KMS_ELEMENT_LOCK (KMS_ELEMENT (self));
appsrc = g_hash_table_lookup (self->priv->srcs, id);
g_free (id);
if (appsrc == NULL) {
KMS_ELEMENT_UNLOCK (KMS_ELEMENT (self));
GST_DEBUG_OBJECT (self, "No appsrc attached to pad %" GST_PTR_FORMAT,
pad);
goto end;
}
srcpad = gst_element_get_static_pad (appsrc, "src");
KMS_ELEMENT_UNLOCK (KMS_ELEMENT (self));
ret = gst_pad_peer_query_accept_caps (srcpad, accept);
gst_object_unref (srcpad);
} else {
GST_ERROR_OBJECT (self, "Incompatbile caps %" GST_PTR_FORMAT, caps);
}
end:
gst_caps_unref (caps);
gst_query_set_accept_caps_result (query, ret);
return TRUE;
}
/**
* gst_composite_adjust_pip:
* @param composite The GstComposite instance
* @param x the X position of the PIP
* @param y the Y position of the PIP
* @param w the width of the PIP
* @param h the height of the PIP
* @return PIP has been changed succefully
*
* Change the PIP position and size.
*/
gboolean
gst_composite_adjust_pip (GstComposite * composite, gint x, gint y,
gint w, gint h)
{
gboolean result = FALSE;
GstIterator *iter = NULL;
GValue value = { 0 };
GstElement *element = NULL;
gboolean done = FALSE;
g_return_val_if_fail (GST_IS_COMPOSITE (composite), FALSE);
GST_COMPOSITE_LOCK (composite);
if (composite->adjusting) {
WARN ("last PIP adjustment request is progressing");
goto end;
}
composite->b_x = x;
composite->b_y = y;
if (composite->b_width != w || composite->b_height != h) {
composite->b_width = w;
composite->b_height = h;
composite->adjusting = TRUE;
gst_worker_stop (GST_WORKER (composite));
result = TRUE;
goto end;
}
element = gst_worker_get_element (GST_WORKER (composite), "mix");
iter = gst_element_iterate_sink_pads (element);
while (iter && !done) {
switch (gst_iterator_next (iter, &value)) {
case GST_ITERATOR_OK:
{
GstPad *pad = g_value_get_object (&value);
if (g_strcmp0 (gst_pad_get_name (pad), "sink_1") == 0) {
g_object_set (pad, "xpos", composite->b_x,
"ypos", composite->b_y, NULL);
done = TRUE;
result = TRUE;
}
g_value_reset (&value);
}
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (iter);
break;
case GST_ITERATOR_DONE:
done = TRUE;
break;
default:
/* iterator returned _ERROR or premature end with _OK,
* mark an error and exit */
done = TRUE;
result = FALSE;
break;
}
}
if (G_IS_VALUE (&value))
g_value_unset (&value);
if (iter)
gst_iterator_free (iter);
composite->adjusting = FALSE;
/*
if (!result) {
WARN ("failed to adjust PIP: %d, %d, %d, %d", x, y, w, h);
}
*/
end:
GST_COMPOSITE_UNLOCK (composite);
return result;
}
static void
close_link (GstPad *srcpad,
GstElement *sinkelement,
const gchar *padname,
const GList *templlist)
{
GstPad *pad;
gboolean has_dynamic_pads = FALSE;
g_print ("Plugging pad %s:%s to newly created %s:%s\n",
gst_object_get_name (GST_OBJECT (gst_pad_get_parent (srcpad))),
gst_pad_get_name (srcpad),
gst_object_get_name (GST_OBJECT (sinkelement)), padname);
/* add the element to the pipeline and set correct state */
if (sinkelement != audiosink) {
gst_bin_add (GST_BIN (pipeline), sinkelement);
gst_element_set_state (sinkelement, GST_STATE_READY);
}
pad = gst_element_get_pad (sinkelement, padname);
gst_pad_link (srcpad, pad);
if (sinkelement != audiosink) {
gst_element_set_state (sinkelement, GST_STATE_PAUSED);
}
gst_object_unref (GST_OBJECT (pad));
/* if we have static source pads, link those. If we have dynamic
* source pads, listen for pad-added signals on the element */
for ( ; templlist != NULL; templlist = templlist->next) {
GstStaticPadTemplate *templ = templlist->data;
/* only sourcepads, no request pads */
if (templ->direction != GST_PAD_SRC ||
templ->presence == GST_PAD_REQUEST) {
continue;
}
switch (templ->presence) {
case GST_PAD_ALWAYS: {
GstPad *pad = gst_element_get_pad (sinkelement, templ->name_template);
GstCaps *caps = gst_pad_get_caps (pad);
/* link */
try_to_plug (pad, caps);
gst_object_unref (GST_OBJECT (pad));
gst_caps_unref (caps);
break;
}
case GST_PAD_SOMETIMES:
has_dynamic_pads = TRUE;
break;
default:
break;
}
}
/* listen for newly created pads if this element supports that */
if (has_dynamic_pads) {
g_signal_connect (sinkelement, "pad-added", G_CALLBACK (cb_newpad), NULL);
}
}
static gboolean
mpegtsmux_src_event (GstPad * pad, GstEvent * event)
{
MpegTsMux *mux = GST_MPEG_TSMUX (gst_pad_get_parent (pad));
gboolean res = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_UPSTREAM:
{
GstIterator *iter;
GstIteratorResult iter_ret;
GstPad *sinkpad;
GstClockTime running_time;
gboolean all_headers, done;
guint count;
if (!gst_video_event_is_force_key_unit (event))
break;
gst_video_event_parse_upstream_force_key_unit (event,
&running_time, &all_headers, &count);
GST_INFO_OBJECT (mux, "received upstream force-key-unit event, "
"seqnum %d running_time %" GST_TIME_FORMAT " all_headers %d count %d",
gst_event_get_seqnum (event), GST_TIME_ARGS (running_time),
all_headers, count);
if (!all_headers)
break;
mux->pending_key_unit_ts = running_time;
gst_event_replace (&mux->force_key_unit_event, event);
iter = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mux));
done = FALSE;
while (!done) {
gboolean res = FALSE, tmp;
iter_ret = gst_iterator_next (iter, (gpointer *) & sinkpad);
switch (iter_ret) {
case GST_ITERATOR_DONE:
done = TRUE;
break;
case GST_ITERATOR_OK:
GST_INFO_OBJECT (mux, "forwarding to %s",
gst_pad_get_name (sinkpad));
tmp = gst_pad_push_event (sinkpad, gst_event_ref (event));
GST_INFO_OBJECT (mux, "result %d", tmp);
/* succeed if at least one pad succeeds */
res |= tmp;
gst_object_unref (sinkpad);
break;
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_RESYNC:
break;
}
}
gst_event_unref (event);
break;
}
default:
res = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (mux);
return res;
}
gboolean
set_audio_bin(GstElement *bin, MbMedia *media, GstPad *decoder_src_pad)
{
GstPad *sink_pad = NULL, *ghost_pad = NULL, *output_sink_pad = NULL;
GstCaps *caps = NULL;
GstPadLinkReturn ret;
int return_code = TRUE;
media->audio_volume = gst_element_factory_make ("volume", NULL);
g_assert (media->audio_volume);
media->audio_converter = gst_element_factory_make ("audioconvert", NULL);
g_assert (media->audio_converter);
media->audio_resampler = gst_element_factory_make ("audioresample", NULL);
g_assert (media->audio_resampler);
media->audio_filter = gst_element_factory_make ("capsfilter", NULL);
g_assert (media->audio_filter);
gst_element_set_state (media->audio_volume, GST_STATE_PAUSED);
gst_element_set_state (media->audio_converter, GST_STATE_PAUSED);
gst_element_set_state (media->audio_resampler, GST_STATE_PAUSED);
gst_element_set_state (media->audio_filter, GST_STATE_PAUSED);
caps = gst_caps_from_string (audio_caps);
g_assert (caps);
g_object_set (media->audio_filter, "caps", caps, NULL);
gst_caps_unref(caps);
gst_bin_add_many (GST_BIN(bin), media->audio_volume, media->audio_converter,
media->audio_resampler, media->audio_filter, NULL);
if (!gst_element_link_many (media->audio_volume, media->audio_converter,
media->audio_resampler, media->audio_filter, NULL))
{
g_debug ("Could not link audio_converter and audio_volume together\n.");
return_code = FALSE;
}
else
{
sink_pad = gst_element_get_static_pad (media->audio_volume, "sink");
g_assert (sink_pad);
ret = gst_pad_link (decoder_src_pad, sink_pad);
if (GST_PAD_LINK_FAILED(ret))
{
return_code = FALSE;
g_debug (" Link failed.\n");
}
else
{
g_debug (" Link succeeded.\n");
g_object_set (G_OBJECT(media->audio_volume), "volume", media->volume,
NULL);
gst_element_set_state (media->audio_volume, GST_STATE_PLAYING);
gst_element_set_state (media->audio_converter, GST_STATE_PLAYING);
gst_element_set_state (media->audio_resampler, GST_STATE_PLAYING);
gst_element_set_state (media->audio_filter, GST_STATE_PLAYING);
ghost_pad = gst_ghost_pad_new (
"a_src", gst_element_get_static_pad (media->audio_filter,
"src"));
gst_pad_set_active (ghost_pad, TRUE);
gst_element_add_pad (bin, ghost_pad);
output_sink_pad = gst_element_get_request_pad (_mb_global_data.audio_mixer,
"sink_%u");
g_assert(output_sink_pad);
media->audio_pad_name = gst_pad_get_name(output_sink_pad);
g_debug ("audiomixer: new pad requested (%s)\n", media->audio_pad_name);
ret = gst_pad_link (ghost_pad, output_sink_pad);
if (GST_PAD_LINK_FAILED(ret))
{
return_code = FALSE;
g_debug (" Could not link %s and audiomixer together.\n", media->name);
}
gst_object_unref (output_sink_pad);
gst_object_unref (sink_pad);
}
}
return return_code;
}
gboolean
set_video_bin(GstElement *bin, MbMedia *media, GstPad *decoder_src_pad)
{
GstElement *sink_element = NULL;
GstCaps *caps = NULL;
GstPad *sink_pad = NULL, *ghost_pad = NULL, *output_sink_pad = NULL;
GstPadLinkReturn ret;
gchar *uri = NULL;
gboolean is_image = FALSE;
int return_code = TRUE;
g_assert (media->video_scaler);
g_assert (media->video_filter);
gst_element_set_state(media->video_scaler, GST_STATE_PAUSED);
gst_element_set_state(media->video_filter, GST_STATE_PAUSED);
caps = gst_caps_new_simple ("video/x-raw",
"pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
"width", G_TYPE_INT, media->width,
"height", G_TYPE_INT, media->height,
NULL);
g_object_set (G_OBJECT (media->video_scaler), "add-borders", 0, NULL);
g_object_set (G_OBJECT (media->video_filter), "caps", caps, NULL);
gst_bin_add_many(GST_BIN (bin), media->video_scaler, media->video_filter,
NULL);
if (!gst_element_link (media->video_scaler, media->video_filter))
{
g_debug ("Could not link elements together.\n");
gst_object_unref (media->video_scaler);
gst_object_unref (media->video_filter);
return FALSE;
}
sink_element = media->video_scaler;
g_object_get (G_OBJECT(media->decoder), "uri", &uri, NULL);
is_image = has_image_extension(uri);
g_free (uri);
if (is_image)
{
media->image_freezer = gst_element_factory_make("imagefreeze", NULL);
g_assert (media->image_freezer);
gst_bin_add (GST_BIN(bin), media->image_freezer);
if (!gst_element_link (media->image_freezer, media->video_scaler))
{
g_debug("Could not link image element.\n");
gst_object_unref(media->image_freezer);
return FALSE;
}
gst_element_set_state(media->image_freezer, GST_STATE_PAUSED);
sink_element = media->image_freezer;
}
sink_pad = gst_element_get_static_pad (sink_element, "sink");
g_assert(sink_pad);
ret = gst_pad_link (decoder_src_pad, sink_pad);
if (GST_PAD_LINK_FAILED(ret))
g_debug (" Link failed.\n");
else
g_debug (" Link succeeded.\n");
ghost_pad = gst_ghost_pad_new (
"v_src", gst_element_get_static_pad (media->video_filter, "src"));
gst_pad_set_active (ghost_pad, TRUE);
gst_element_add_pad (bin, ghost_pad);
output_sink_pad = gst_element_get_request_pad(_mb_global_data.video_mixer,
"sink_%u");
g_assert (output_sink_pad);
media->video_pad_name = gst_pad_get_name (output_sink_pad);
g_debug ("videomixer: new pad requested (%s)\n", media->video_pad_name);
ret = gst_pad_link (ghost_pad, output_sink_pad);
if (GST_PAD_LINK_FAILED(ret))
{
return_code = FALSE;
g_debug (" Could not link %s and videomixer together\n", media->name);
}
else
{
g_object_set (output_sink_pad, "xpos", media->x_pos, NULL);
g_object_set (output_sink_pad, "ypos", media->y_pos, NULL);
g_object_set (output_sink_pad, "zorder", media->z_index, NULL);
g_object_set (output_sink_pad, "alpha", media->alpha, NULL);
g_debug (" Link succeeded between %s and videomixer.\n", media->name);
}
if (is_image)
gst_element_set_state(media->image_freezer, GST_STATE_PLAYING);
gst_element_set_state (media->video_scaler, GST_STATE_PLAYING);
gst_element_set_state (media->video_filter, GST_STATE_PLAYING);
gst_caps_unref(caps);
gst_object_unref (output_sink_pad);
gst_object_unref(sink_pad);
return return_code;
}
