static void
gst_interleave_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstInterleave *self = GST_INTERLEAVE (object);
switch (prop_id) {
case PROP_CHANNEL_POSITIONS:
if (self->channel_positions &&
self->channel_positions != self->input_channel_positions)
g_value_array_free (self->channel_positions);
self->channel_positions = g_value_dup_boxed (value);
self->channel_positions_from_input = FALSE;
self->channels = self->channel_positions->n_values;
break;
case PROP_CHANNEL_POSITIONS_FROM_INPUT:
self->channel_positions_from_input = g_value_get_boolean (value);
if (self->channel_positions_from_input) {
if (self->channel_positions &&
self->channel_positions != self->input_channel_positions)
g_value_array_free (self->channel_positions);
self->channel_positions = self->input_channel_positions;
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_interleave_sink_query (GstCollectPads * pads,
GstCollectData * data, GstQuery * query, gpointer user_data)
{
GstInterleave *self = GST_INTERLEAVE (user_data);
gboolean ret = TRUE;
GST_DEBUG ("Got %s query on pad %s:%s", GST_QUERY_TYPE_NAME (query),
GST_DEBUG_PAD_NAME (data->pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = gst_interleave_sink_getcaps (data->pad, self, filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
ret = TRUE;
break;
}
default:
ret = gst_collect_pads_query_default (pads, data, query, FALSE);
break;
}
return ret;
}
static void
gst_interleave_finalize (GObject * object)
{
GstInterleave *self = GST_INTERLEAVE (object);
if (self->collect) {
gst_object_unref (self->collect);
self->collect = NULL;
}
if (self->channel_positions
&& self->channel_positions != self->input_channel_positions) {
g_value_array_free (self->channel_positions);
self->channel_positions = NULL;
}
if (self->input_channel_positions) {
g_value_array_free (self->input_channel_positions);
self->input_channel_positions = NULL;
}
gst_caps_replace (&self->sinkcaps, NULL);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_interleave_sink_event (GstPad * pad, GstEvent * event)
{
GstInterleave *self = GST_INTERLEAVE (gst_pad_get_parent (pad));
gboolean ret;
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:
/* mark a pending new segment. This event is synchronized
* with the streaming thread so we can safely update the
* variable without races. It's somewhat weird because we
* assume the collectpads forwarded the FLUSH_STOP past us
* and downstream (using our source pad, the bastard!).
*/
self->segment_pending = TRUE;
break;
default:
break;
}
/* now GstCollectPads can take care of the rest, e.g. EOS */
ret = self->collect_event (pad, event);
gst_object_unref (self);
return ret;
}
static gboolean
gst_interleave_src_event (GstPad * pad, GstEvent * event)
{
GstInterleave *self = GST_INTERLEAVE (gst_pad_get_parent (pad));
gboolean result;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:
/* QoS might be tricky */
result = FALSE;
break;
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
GstSeekType curtype;
gint64 cur;
/* parse the seek parameters */
gst_event_parse_seek (event, &self->segment_rate, NULL, &flags, &curtype,
&cur, NULL, NULL);
/* check if we are flushing */
if (flags & GST_SEEK_FLAG_FLUSH) {
/* make sure we accept nothing anymore and return WRONG_STATE */
gst_collect_pads_set_flushing (self->collect, TRUE);
/* flushing seek, start flush downstream, the flush will be done
* when all pads received a FLUSH_STOP. */
gst_pad_push_event (self->src, gst_event_new_flush_start ());
}
/* now wait for the collected to be finished and mark a new
* segment */
GST_OBJECT_LOCK (self->collect);
if (curtype == GST_SEEK_TYPE_SET)
self->segment_position = cur;
else
self->segment_position = 0;
self->segment_pending = TRUE;
GST_OBJECT_UNLOCK (self->collect);
result = forward_event (self, event);
break;
}
case GST_EVENT_NAVIGATION:
/* navigation is rather pointless. */
result = FALSE;
break;
default:
/* just forward the rest for now */
result = forward_event (self, event);
break;
}
gst_object_unref (self);
return result;
}
static gboolean
gst_interleave_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstInterleave *self = GST_INTERLEAVE (parent);
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, self->timestamp);
res = TRUE;
break;
case GST_FORMAT_BYTES:
gst_query_set_position (query, format,
self->offset * self->channels * self->width);
res = TRUE;
break;
case GST_FORMAT_DEFAULT:
gst_query_set_position (query, format, self->offset);
res = TRUE;
break;
default:
break;
}
break;
}
case GST_QUERY_DURATION:
res = gst_interleave_src_query_duration (self, query);
break;
case GST_QUERY_LATENCY:
res = gst_interleave_src_query_latency (self, query);
break;
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = gst_interleave_sink_getcaps (pad, parent, filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
res = TRUE;
}
default:
/* FIXME, needs a custom query handler because we have multiple
* sinkpads */
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
}
static void
gst_interleave_release_pad (GstElement * element, GstPad * pad)
{
GstInterleave *self = GST_INTERLEAVE (element);
GList *l;
GstAudioChannelPosition position;
g_return_if_fail (GST_IS_INTERLEAVE_PAD (pad));
/* Take lock to make sure we're not changing this when processing buffers */
GST_OBJECT_LOCK (self->collect);
g_atomic_int_add (&self->channels, -1);
if (gst_pad_has_current_caps (pad))
g_atomic_int_add (&self->configured_sinkpads_counter, -1);
position = GST_INTERLEAVE_PAD_CAST (pad)->channel;
g_value_array_remove (self->input_channel_positions, position);
/* Update channel numbers */
GST_OBJECT_LOCK (self);
for (l = GST_ELEMENT_CAST (self)->sinkpads; l != NULL; l = l->next) {
GstInterleavePad *ipad = GST_INTERLEAVE_PAD (l->data);
if (GST_INTERLEAVE_PAD_CAST (pad)->channel < ipad->channel)
ipad->channel--;
}
GST_OBJECT_UNLOCK (self);
/* Update the src caps if we already have them */
if (self->sinkcaps) {
if (self->channels > 0) {
GstCaps *srccaps;
GstStructure *s;
srccaps = gst_caps_copy (self->sinkcaps);
s = gst_caps_get_structure (srccaps, 0);
gst_structure_set (s, "channels", G_TYPE_INT, self->channels, NULL);
gst_interleave_set_channel_positions (self, s);
gst_pad_set_active (self->src, TRUE);
gst_pad_set_caps (self->src, srccaps);
gst_caps_unref (srccaps);
} else {
gst_caps_replace (&self->sinkcaps, NULL);
}
}
GST_OBJECT_UNLOCK (self->collect);
gst_collect_pads_remove_pad (self->collect, pad);
gst_element_remove_pad (element, pad);
}
static GstStateChangeReturn
gst_interleave_change_state (GstElement * element, GstStateChange transition)
{
GstInterleave *self;
GstStateChangeReturn ret;
self = GST_INTERLEAVE (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
self->timestamp = 0;
self->offset = 0;
self->segment_pending = TRUE;
self->segment_position = 0;
self->segment_rate = 1.0;
gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
gst_collect_pads_start (self->collect);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
/* Stop before calling the parent's state change function as
* GstCollectPads might take locks and we would deadlock in that
* case
*/
if (transition == GST_STATE_CHANGE_PAUSED_TO_READY)
gst_collect_pads_stop (self->collect);
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_pad_set_caps (self->src, NULL);
gst_caps_replace (&self->sinkcaps, NULL);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static void
gst_interleave_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstInterleave *self = GST_INTERLEAVE (object);
switch (prop_id) {
case PROP_CHANNEL_POSITIONS:
g_value_set_boxed (value, self->channel_positions);
break;
case PROP_CHANNEL_POSITIONS_FROM_INPUT:
g_value_set_boolean (value, self->channel_positions_from_input);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* we can only accept caps that we and downstream can handle. */
static GstCaps *
gst_interleave_sink_getcaps (GstPad * pad)
{
GstInterleave *self = GST_INTERLEAVE (gst_pad_get_parent (pad));
GstCaps *result, *peercaps, *sinkcaps;
GST_OBJECT_LOCK (self);
/* If we already have caps on one of the sink pads return them */
if (self->sinkcaps) {
result = gst_caps_copy (self->sinkcaps);
} else {
/* get the downstream possible caps */
peercaps = gst_pad_peer_get_caps (self->src);
/* get the allowed caps on this sinkpad */
sinkcaps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
__remove_channels (sinkcaps);
if (peercaps) {
__remove_channels (peercaps);
/* if the peer has caps, intersect */
GST_DEBUG_OBJECT (pad, "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. */
GST_DEBUG_OBJECT (pad, "no peer caps, using sinkcaps");
result = sinkcaps;
}
__set_channels (result, 1);
}
GST_OBJECT_UNLOCK (self);
gst_object_unref (self);
GST_DEBUG_OBJECT (pad, "Returning caps %" GST_PTR_FORMAT, result);
return result;
}
static gboolean
gst_interleave_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstInterleave *self = GST_INTERLEAVE (parent);
gboolean result;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:
/* QoS might be tricky */
result = FALSE;
break;
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
gst_event_parse_seek (event, NULL, NULL, &flags, NULL, NULL, NULL, NULL);
/* check if we are flushing */
if (flags & GST_SEEK_FLAG_FLUSH) {
/* make sure we accept nothing anymore and return WRONG_STATE */
gst_collect_pads_set_flushing (self->collect, TRUE);
/* flushing seek, start flush downstream, the flush will be done
* when all pads received a FLUSH_STOP. */
gst_pad_push_event (self->src, gst_event_new_flush_start ());
}
result = forward_event (self, event);
break;
}
case GST_EVENT_NAVIGATION:
/* navigation is rather pointless. */
result = FALSE;
break;
default:
/* just forward the rest for now */
result = forward_event (self, event);
break;
}
return result;
}
static gboolean
gst_interleave_sink_event (GstCollectPads * pads, GstCollectData * data,
GstEvent * event, gpointer user_data)
{
GstInterleave *self = GST_INTERLEAVE (user_data);
gboolean ret = TRUE;
GST_DEBUG ("Got %s event on pad %s:%s", GST_EVENT_TYPE_NAME (event),
GST_DEBUG_PAD_NAME (data->pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
GST_OBJECT_LOCK (self);
gst_event_replace (&self->pending_segment, NULL);
GST_OBJECT_UNLOCK (self);
break;
case GST_EVENT_SEGMENT:
{
GST_OBJECT_LOCK (self);
gst_event_replace (&self->pending_segment, event);
GST_OBJECT_UNLOCK (self);
break;
}
case GST_EVENT_CAPS:
{
GstCaps *caps;
GstAudioInfo info;
GValue *val;
guint channel;
gst_event_parse_caps (event, &caps);
if (!gst_audio_info_from_caps (&info, caps)) {
GST_WARNING_OBJECT (self, "invalid sink caps");
gst_event_unref (event);
event = NULL;
ret = FALSE;
break;
}
if (self->channel_positions_from_input
&& GST_AUDIO_INFO_CHANNELS (&info) == 1) {
channel = GST_INTERLEAVE_PAD_CAST (data->pad)->channel;
val = g_value_array_get_nth (self->input_channel_positions, channel);
g_value_set_enum (val, GST_AUDIO_INFO_POSITION (&info, 0));
}
if (!gst_pad_has_current_caps (data->pad))
g_atomic_int_add (&self->configured_sinkpads_counter, 1);
/* Last caps that are set on a sink pad are used as output caps */
if (g_atomic_int_get (&self->configured_sinkpads_counter) ==
self->channels) {
ret = gst_interleave_sink_setcaps (self, data->pad, caps, &info);
gst_event_unref (event);
event = NULL;
}
break;
}
case GST_EVENT_TAG:
GST_FIXME_OBJECT (self, "FIXME: merge tags and send after stream-start");
break;
default:
break;
}
/* now GstCollectPads can take care of the rest, e.g. EOS */
if (event != NULL)
return gst_collect_pads_event_default (pads, data, event, FALSE);
return ret;
}
static GstPad *
gst_interleave_request_new_pad (GstElement * element, GstPadTemplate * templ,
const gchar * req_name, const GstCaps * caps)
{
GstInterleave *self = GST_INTERLEAVE (element);
GstPad *new_pad;
gchar *pad_name;
gint channels, padnumber;
GValue val = { 0, };
if (templ->direction != GST_PAD_SINK)
goto not_sink_pad;
padnumber = g_atomic_int_add (&self->padcounter, 1);
if (self->channel_positions_from_input)
channels = g_atomic_int_add (&self->channels, 1);
else
channels = padnumber;
pad_name = g_strdup_printf ("sink_%u", padnumber);
new_pad = GST_PAD_CAST (g_object_new (GST_TYPE_INTERLEAVE_PAD,
"name", pad_name, "direction", templ->direction,
"template", templ, NULL));
GST_INTERLEAVE_PAD_CAST (new_pad)->channel = channels;
GST_DEBUG_OBJECT (self, "requested new pad %s", pad_name);
g_free (pad_name);
gst_pad_use_fixed_caps (new_pad);
gst_collect_pads_add_pad (self->collect, new_pad, sizeof (GstCollectData),
NULL, TRUE);
gst_collect_pads_set_event_function (self->collect,
(GstCollectPadsEventFunction)
GST_DEBUG_FUNCPTR (gst_interleave_sink_event), self);
if (!gst_element_add_pad (element, new_pad))
goto could_not_add;
g_value_init (&val, GST_TYPE_AUDIO_CHANNEL_POSITION);
g_value_set_enum (&val, GST_AUDIO_CHANNEL_POSITION_NONE);
self->input_channel_positions =
g_value_array_append (self->input_channel_positions, &val);
g_value_unset (&val);
/* Update the src caps if we already have them */
if (self->sinkcaps) {
GstCaps *srccaps;
GstStructure *s;
/* Take lock to make sure processing finishes first */
GST_OBJECT_LOCK (self->collect);
srccaps = gst_caps_copy (self->sinkcaps);
s = gst_caps_get_structure (srccaps, 0);
gst_structure_set (s, "channels", G_TYPE_INT, self->channels, NULL);
gst_interleave_set_channel_positions (self, s);
/* FIXME: send caps event after stream-start event */
gst_pad_set_active (self->src, TRUE);
gst_pad_set_caps (self->src, srccaps);
gst_caps_unref (srccaps);
GST_OBJECT_UNLOCK (self->collect);
}
return new_pad;
/* errors */
not_sink_pad:
{
g_warning ("interleave: requested new pad that is not a SINK pad\n");
return NULL;
}
could_not_add:
{
GST_DEBUG_OBJECT (self, "could not add pad %s", GST_PAD_NAME (new_pad));
gst_collect_pads_remove_pad (self->collect, new_pad);
gst_object_unref (new_pad);
return NULL;
}
}
static gboolean
gst_interleave_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstInterleave *self;
g_return_val_if_fail (GST_IS_INTERLEAVE_PAD (pad), FALSE);
self = GST_INTERLEAVE (gst_pad_get_parent (pad));
/* First caps that are set on a sink pad are used as output caps */
/* TODO: handle caps changes */
if (self->sinkcaps && !gst_caps_is_subset (caps, self->sinkcaps)) {
goto cannot_change_caps;
} else {
GstCaps *srccaps;
GstStructure *s;
gboolean res;
s = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (s, "width", &self->width))
goto no_width;
if (!gst_structure_get_int (s, "rate", &self->rate))
goto no_rate;
gst_interleave_set_process_function (self);
if (gst_structure_has_field (s, "channel-positions")) {
const GValue *pos_array;
pos_array = gst_structure_get_value (s, "channel-positions");
if (GST_VALUE_HOLDS_ARRAY (pos_array)
&& gst_value_array_get_size (pos_array) == 1) {
const GValue *pos = gst_value_array_get_value (pos_array, 0);
GValue *apos = g_value_array_get_nth (self->input_channel_positions,
GST_INTERLEAVE_PAD_CAST (pad)->channel);
g_value_set_enum (apos, g_value_get_enum (pos));
}
}
srccaps = gst_caps_copy (caps);
s = gst_caps_get_structure (srccaps, 0);
gst_structure_set (s, "channels", G_TYPE_INT, self->channels, NULL);
gst_interleave_set_channel_positions (self, s);
res = gst_pad_set_caps (self->src, srccaps);
gst_caps_unref (srccaps);
if (!res)
goto src_did_not_accept;
}
if (!self->sinkcaps) {
GstCaps *sinkcaps = gst_caps_copy (caps);
GstStructure *s = gst_caps_get_structure (sinkcaps, 0);
gst_structure_remove_field (s, "channel-positions");
gst_caps_replace (&self->sinkcaps, sinkcaps);
gst_caps_unref (sinkcaps);
}
gst_object_unref (self);
return TRUE;
cannot_change_caps:
{
GST_DEBUG_OBJECT (self, "caps of %" GST_PTR_FORMAT " already set, can't "
"change", self->sinkcaps);
gst_object_unref (self);
return FALSE;
}
src_did_not_accept:
{
GST_DEBUG_OBJECT (self, "src did not accept setcaps()");
gst_object_unref (self);
return FALSE;
}
no_width:
{
GST_WARNING_OBJECT (self, "caps did not have width: %" GST_PTR_FORMAT,
caps);
gst_object_unref (self);
return FALSE;
}
no_rate:
{
GST_WARNING_OBJECT (self, "caps did not have rate: %" GST_PTR_FORMAT, caps);
gst_object_unref (self);
return FALSE;
}
}
