static gboolean
gst_adder_sink_event (GstCollectPads2 * pads, GstCollectData2 * pad,
GstEvent * event, gpointer user_data)
{
GstAdder *adder = GST_ADDER (user_data);
gboolean res = FALSE;
GST_DEBUG_OBJECT (pad->pad, "Got %s event on sink pad from %s",
GST_EVENT_TYPE_NAME (event), GST_OBJECT_NAME (GST_EVENT_SRC (event)));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
/* drop flush start events, as we forwarded one already when handing the
* flushing seek on the sink pad */
gst_event_unref (event);
res = TRUE;
break;
case GST_EVENT_FLUSH_STOP:
/* we received a flush-stop. We will only forward it when
* flush_stop_pending is set, and we will unset it then.
*/
if (g_atomic_int_compare_and_exchange (&adder->flush_stop_pending,
TRUE, FALSE)) {
g_atomic_int_set (&adder->new_segment_pending, TRUE);
GST_DEBUG_OBJECT (pad->pad, "forwarding flush stop");
} else {
gst_event_unref (event);
res = TRUE;
GST_DEBUG_OBJECT (pad->pad, "eating flush stop");
}
/* Clear pending tags */
if (adder->pending_events) {
g_list_foreach (adder->pending_events, (GFunc) gst_event_unref, NULL);
g_list_free (adder->pending_events);
adder->pending_events = NULL;
}
break;
case GST_EVENT_TAG:
/* collect tags here so we can push them out when we collect data */
adder->pending_events = g_list_append (adder->pending_events, event);
res = TRUE;
break;
case GST_EVENT_NEWSEGMENT:
if (g_atomic_int_compare_and_exchange (&adder->wait_for_new_segment,
TRUE, FALSE)) {
/* make sure we push a new segment, to inform about new basetime
* see FIXME in gst_adder_collected() */
g_atomic_int_set (&adder->new_segment_pending, TRUE);
}
gst_event_unref (event);
res = TRUE;
break;
default:
break;
}
return res;
}
/* we can only accept caps that we and downstream can handle.
* if we have filtercaps set, use those to constrain the target caps.
*/
static GstCaps *
gst_adder_sink_getcaps (GstPad * pad)
{
GstAdder *adder;
GstCaps *result, *peercaps, *sinkcaps, *filter_caps;
adder = GST_ADDER (GST_PAD_PARENT (pad));
GST_OBJECT_LOCK (adder);
/* take filter */
if ((filter_caps = adder->filter_caps))
gst_caps_ref (filter_caps);
GST_OBJECT_UNLOCK (adder);
/* get the downstream possible caps */
peercaps = gst_pad_peer_get_caps (adder->srcpad);
/* get the allowed caps on this sinkpad, we use the fixed caps function so
* that it does not call recursively in this function. */
sinkcaps = gst_pad_get_fixed_caps_func (pad);
if (peercaps) {
/* restrict with filter-caps if any */
if (filter_caps) {
GST_DEBUG_OBJECT (adder, "filtering peer caps");
result = gst_caps_intersect (peercaps, filter_caps);
gst_caps_unref (peercaps);
peercaps = result;
}
/* if the peer has caps, intersect */
GST_DEBUG_OBJECT (adder, "intersecting peer and template caps");
result = gst_caps_intersect (peercaps, sinkcaps);
gst_caps_unref (peercaps);
gst_caps_unref (sinkcaps);
} else {
/* the peer has no caps (or there is no peer), just use the allowed caps
* of this sinkpad. */
/* restrict with filter-caps if any */
if (filter_caps) {
GST_DEBUG_OBJECT (adder, "no peer caps, using filtered sinkcaps");
result = gst_caps_intersect (sinkcaps, filter_caps);
gst_caps_unref (sinkcaps);
} else {
GST_DEBUG_OBJECT (adder, "no peer caps, using sinkcaps");
result = sinkcaps;
}
}
if (filter_caps)
gst_caps_unref (filter_caps);
GST_LOG_OBJECT (adder, "getting caps on pad %p,%s to %" GST_PTR_FORMAT, pad,
GST_PAD_NAME (pad), result);
return result;
}
static gboolean
gst_adder_sink_event (GstPad * pad, GstEvent * event)
{
GstAdder *adder;
gboolean ret = TRUE;
adder = GST_ADDER (gst_pad_get_parent (pad));
GST_DEBUG ("Got %s event on pad %s:%s", GST_EVENT_TYPE_NAME (event),
GST_DEBUG_PAD_NAME (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
/* we received a flush-stop. The collect_event function will push the
* event past our element. We simply forward all flush-stop events, even
* when no flush-stop was pending, this is required because collectpads
* does not provide an API to handle-but-not-forward the flush-stop.
* We unset the pending flush-stop flag so that we don't send anymore
* flush-stop from the collect function later.
*/
GST_OBJECT_LOCK (adder->collect);
adder->segment_pending = TRUE;
adder->flush_stop_pending = FALSE;
/* Clear pending tags */
if (adder->pending_events) {
g_list_foreach (adder->pending_events, (GFunc) gst_event_unref, NULL);
g_list_free (adder->pending_events);
adder->pending_events = NULL;
}
GST_OBJECT_UNLOCK (adder->collect);
break;
case GST_EVENT_TAG:
GST_OBJECT_LOCK (adder->collect);
/* collect tags here so we can push them out when we collect data */
adder->pending_events = g_list_append (adder->pending_events, event);
GST_OBJECT_UNLOCK (adder->collect);
goto beach;
default:
break;
}
/* now GstCollectPads can take care of the rest, e.g. EOS */
ret = adder->collect_event (pad, event);
beach:
gst_object_unref (adder);
return ret;
}
static gboolean
gst_adder_query (GstPad * pad, GstQuery * query)
{
GstAdder *adder = GST_ADDER (gst_pad_get_parent (pad));
gboolean res = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gst_query_parse_position (query, &format, NULL);
switch (format) {
case GST_FORMAT_TIME:
/* FIXME, bring to stream time, might be tricky */
gst_query_set_position (query, format, adder->timestamp);
res = TRUE;
break;
case GST_FORMAT_DEFAULT:
gst_query_set_position (query, format, adder->offset);
res = TRUE;
break;
default:
break;
}
break;
}
case GST_QUERY_DURATION:
res = gst_adder_query_duration (adder, query);
break;
case GST_QUERY_LATENCY:
res = gst_adder_query_latency (adder, query);
break;
default:
/* FIXME, needs a custom query handler because we have multiple
* sinkpads */
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (adder);
return res;
}
static gboolean
gst_adder_src_event (GstPad * pad, GstEvent * event)
{
GstAdder *adder;
gboolean result;
adder = GST_ADDER (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (pad, "Got %s event on src pad from %s",
GST_EVENT_TYPE_NAME (event), GST_OBJECT_NAME (GST_EVENT_SRC (event)));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
GstSeekType curtype, endtype;
gint64 cur, end;
gboolean flush;
/* parse the seek parameters */
gst_event_parse_seek (event, &adder->segment_rate, NULL, &flags, &curtype,
&cur, &endtype, &end);
if ((curtype != GST_SEEK_TYPE_NONE) && (curtype != GST_SEEK_TYPE_SET)) {
result = FALSE;
GST_DEBUG_OBJECT (adder,
"seeking failed, unhandled seek type for start: %d", curtype);
goto done;
}
if ((endtype != GST_SEEK_TYPE_NONE) && (endtype != GST_SEEK_TYPE_SET)) {
result = FALSE;
GST_DEBUG_OBJECT (adder,
"seeking failed, unhandled seek type for end: %d", endtype);
goto done;
}
flush = (flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH;
/* check if we are flushing */
if (flush) {
/* flushing seek, start flush downstream, the flush will be done
* when all pads received a FLUSH_STOP.
* Make sure we accept nothing anymore and return WRONG_STATE.
* We send a flush-start before, to ensure no streaming is done
* as we need to take the stream lock.
*/
gst_pad_push_event (adder->srcpad, gst_event_new_flush_start ());
gst_collect_pads2_set_flushing (adder->collect, TRUE);
/* We can't send FLUSH_STOP here since upstream could start pushing data
* after we unlock adder->collect.
* We set flush_stop_pending to TRUE instead and send FLUSH_STOP after
* forwarding the seek upstream or from gst_adder_collected,
* whichever happens first.
*/
g_atomic_int_set (&adder->flush_stop_pending, TRUE);
}
GST_DEBUG_OBJECT (adder, "handling seek event: %" GST_PTR_FORMAT, event);
/* now wait for the collected to be finished and mark a new
* segment. After we have the lock, no collect function is running and no
* new collect function will be called for as long as we're flushing. */
GST_COLLECT_PADS2_STREAM_LOCK (adder->collect);
if (curtype == GST_SEEK_TYPE_SET)
adder->segment_start = cur;
else
adder->segment_start = 0;
if (endtype == GST_SEEK_TYPE_SET)
adder->segment_end = end;
else
adder->segment_end = GST_CLOCK_TIME_NONE;
if (flush) {
/* Yes, we need to call _set_flushing again *WHEN* the streaming threads
* have stopped so that the cookie gets properly updated. */
gst_collect_pads2_set_flushing (adder->collect, TRUE);
}
GST_COLLECT_PADS2_STREAM_UNLOCK (adder->collect);
GST_DEBUG_OBJECT (adder, "forwarding seek event: %" GST_PTR_FORMAT,
event);
/* we're forwarding seek to all upstream peers and wait for one to reply
* with a newsegment-event before we send a newsegment-event downstream */
g_atomic_int_set (&adder->wait_for_new_segment, TRUE);
result = forward_event (adder, event, flush);
if (!result) {
/* seek failed. maybe source is a live source. */
GST_DEBUG_OBJECT (adder, "seeking failed");
}
if (g_atomic_int_compare_and_exchange (&adder->flush_stop_pending,
TRUE, FALSE)) {
GST_DEBUG_OBJECT (adder, "pending flush stop");
gst_pad_push_event (adder->srcpad, gst_event_new_flush_stop ());
}
break;
}
case GST_EVENT_QOS:
/* QoS might be tricky */
result = FALSE;
break;
case GST_EVENT_NAVIGATION:
/* navigation is rather pointless. */
result = FALSE;
break;
default:
/* just forward the rest for now */
GST_DEBUG_OBJECT (adder, "forward unhandled event: %s",
GST_EVENT_TYPE_NAME (event));
result = forward_event (adder, event, FALSE);
break;
}
done:
gst_object_unref (adder);
return result;
}
/* the first caps we receive on any of the sinkpads will define the caps for all
* the other sinkpads because we can only mix streams with the same caps.
*/
static gboolean
gst_adder_setcaps (GstPad * pad, GstCaps * caps)
{
GstAdder *adder;
GList *pads;
GstStructure *structure;
const char *media_type;
adder = GST_ADDER (GST_PAD_PARENT (pad));
GST_LOG_OBJECT (adder, "setting caps on pad %p,%s to %" GST_PTR_FORMAT, pad,
GST_PAD_NAME (pad), caps);
/* FIXME, see if the other pads can accept the format. Also lock the
* format on the other pads to this new format. */
GST_OBJECT_LOCK (adder);
pads = GST_ELEMENT (adder)->pads;
while (pads) {
GstPad *otherpad = GST_PAD (pads->data);
if (otherpad != pad) {
gst_caps_replace (&GST_PAD_CAPS (otherpad), caps);
}
pads = g_list_next (pads);
}
GST_OBJECT_UNLOCK (adder);
/* parse caps now */
structure = gst_caps_get_structure (caps, 0);
media_type = gst_structure_get_name (structure);
if (strcmp (media_type, "audio/x-raw-int") == 0) {
adder->format = GST_ADDER_FORMAT_INT;
gst_structure_get_int (structure, "width", &adder->width);
gst_structure_get_int (structure, "depth", &adder->depth);
gst_structure_get_int (structure, "endianness", &adder->endianness);
gst_structure_get_boolean (structure, "signed", &adder->is_signed);
GST_INFO_OBJECT (pad, "parse_caps sets adder to format int, %d bit",
adder->width);
if (adder->endianness != G_BYTE_ORDER)
goto not_supported;
switch (adder->width) {
case 8:
adder->func = (adder->is_signed ?
(GstAdderFunction) add_int8 : (GstAdderFunction) add_uint8);
adder->sample_size = 1;
break;
case 16:
adder->func = (adder->is_signed ?
(GstAdderFunction) add_int16 : (GstAdderFunction) add_uint16);
adder->sample_size = 2;
break;
case 32:
adder->func = (adder->is_signed ?
(GstAdderFunction) add_int32 : (GstAdderFunction) add_uint32);
adder->sample_size = 4;
break;
default:
goto not_supported;
}
} else if (strcmp (media_type, "audio/x-raw-float") == 0) {
adder->format = GST_ADDER_FORMAT_FLOAT;
gst_structure_get_int (structure, "width", &adder->width);
gst_structure_get_int (structure, "endianness", &adder->endianness);
GST_INFO_OBJECT (pad, "parse_caps sets adder to format float, %d bit",
adder->width);
if (adder->endianness != G_BYTE_ORDER)
goto not_supported;
switch (adder->width) {
case 32:
adder->func = (GstAdderFunction) add_float32;
adder->sample_size = 4;
break;
case 64:
adder->func = (GstAdderFunction) add_float64;
adder->sample_size = 8;
break;
default:
goto not_supported;
}
} else {
goto not_supported;
}
gst_structure_get_int (structure, "channels", &adder->channels);
gst_structure_get_int (structure, "rate", &adder->rate);
/* precalc bps */
adder->bps = (adder->width / 8) * adder->channels;
return TRUE;
/* ERRORS */
not_supported:
{
GST_DEBUG_OBJECT (adder, "unsupported format set as caps");
return FALSE;
}
}
static gboolean
gst_adder_sink_event (GstCollectPads * pads, GstCollectData * pad,
GstEvent * event, gpointer user_data)
{
GstAdder *adder = GST_ADDER (user_data);
gboolean res = TRUE, discard = FALSE;
GST_DEBUG_OBJECT (pad->pad, "Got %s event on sink pad",
GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
res = gst_adder_setcaps (adder, pad->pad, caps);
gst_event_unref (event);
event = NULL;
break;
}
case GST_EVENT_FLUSH_START:
/* ensure that we will send a flush stop */
res = gst_collect_pads_event_default (pads, pad, event, discard);
event = NULL;
GST_COLLECT_PADS_STREAM_LOCK (adder->collect);
adder->flush_stop_pending = TRUE;
GST_COLLECT_PADS_STREAM_UNLOCK (adder->collect);
break;
case GST_EVENT_FLUSH_STOP:
/* we received a flush-stop. We will only forward it when
* flush_stop_pending is set, and we will unset it then.
*/
g_atomic_int_set (&adder->new_segment_pending, TRUE);
GST_COLLECT_PADS_STREAM_LOCK (adder->collect);
if (adder->flush_stop_pending) {
GST_DEBUG_OBJECT (pad->pad, "forwarding flush stop");
res = gst_collect_pads_event_default (pads, pad, event, discard);
adder->flush_stop_pending = FALSE;
event = NULL;
} else {
discard = TRUE;
GST_DEBUG_OBJECT (pad->pad, "eating flush stop");
}
GST_COLLECT_PADS_STREAM_UNLOCK (adder->collect);
/* Clear pending tags */
if (adder->pending_events) {
g_list_foreach (adder->pending_events, (GFunc) gst_event_unref, NULL);
g_list_free (adder->pending_events);
adder->pending_events = NULL;
}
break;
case GST_EVENT_TAG:
/* collect tags here so we can push them out when we collect data */
adder->pending_events = g_list_append (adder->pending_events, event);
event = NULL;
break;
case GST_EVENT_SEGMENT:{
const GstSegment *segment;
gst_event_parse_segment (event, &segment);
if (segment->rate != adder->segment.rate) {
GST_ERROR_OBJECT (pad->pad,
"Got segment event with wrong rate %lf, expected %lf",
segment->rate, adder->segment.rate);
res = FALSE;
gst_event_unref (event);
event = NULL;
}
discard = TRUE;
break;
}
default:
break;
}
if (G_LIKELY (event))
return gst_collect_pads_event_default (pads, pad, event, discard);
else
return res;
}
/* we can only accept caps that we and downstream can handle.
* if we have filtercaps set, use those to constrain the target caps.
*/
static GstCaps *
gst_adder_sink_getcaps (GstPad * pad, GstCaps * filter)
{
GstAdder *adder;
GstCaps *result, *peercaps, *current_caps, *filter_caps;
GstStructure *s;
gint i, n;
adder = GST_ADDER (GST_PAD_PARENT (pad));
GST_OBJECT_LOCK (adder);
/* take filter */
if ((filter_caps = adder->filter_caps)) {
if (filter)
filter_caps =
gst_caps_intersect_full (filter, filter_caps,
GST_CAPS_INTERSECT_FIRST);
else
gst_caps_ref (filter_caps);
} else {
filter_caps = filter ? gst_caps_ref (filter) : NULL;
}
GST_OBJECT_UNLOCK (adder);
if (filter_caps && gst_caps_is_empty (filter_caps)) {
GST_WARNING_OBJECT (pad, "Empty filter caps");
return filter_caps;
}
/* get the downstream possible caps */
peercaps = gst_pad_peer_query_caps (adder->srcpad, filter_caps);
/* get the allowed caps on this sinkpad */
GST_OBJECT_LOCK (adder);
current_caps =
adder->current_caps ? gst_caps_ref (adder->current_caps) : NULL;
if (current_caps == NULL) {
current_caps = gst_pad_get_pad_template_caps (pad);
if (!current_caps)
current_caps = gst_caps_new_any ();
}
GST_OBJECT_UNLOCK (adder);
if (peercaps) {
/* if the peer has caps, intersect */
GST_DEBUG_OBJECT (adder, "intersecting peer and our caps");
result =
gst_caps_intersect_full (peercaps, current_caps,
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
gst_caps_unref (current_caps);
} else {
/* the peer has no caps (or there is no peer), just use the allowed caps
* of this sinkpad. */
/* restrict with filter-caps if any */
if (filter_caps) {
GST_DEBUG_OBJECT (adder, "no peer caps, using filtered caps");
result =
gst_caps_intersect_full (filter_caps, current_caps,
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (current_caps);
} else {
GST_DEBUG_OBJECT (adder, "no peer caps, using our caps");
result = current_caps;
}
}
result = gst_caps_make_writable (result);
n = gst_caps_get_size (result);
for (i = 0; i < n; i++) {
GstStructure *sref;
s = gst_caps_get_structure (result, i);
sref = gst_structure_copy (s);
gst_structure_set (sref, "channels", GST_TYPE_INT_RANGE, 0, 2, NULL);
if (gst_structure_is_subset (s, sref)) {
/* This field is irrelevant when in mono or stereo */
gst_structure_remove_field (s, "channel-mask");
}
gst_structure_free (sref);
}
if (filter_caps)
gst_caps_unref (filter_caps);
GST_LOG_OBJECT (adder, "getting caps on pad %p,%s to %" GST_PTR_FORMAT, pad,
GST_PAD_NAME (pad), result);
return result;
}