--- /dev/null
+/* GStreamer
+ * Copyright (C) 2014 Mathieu Duponchelle <mathieu.duponchelle@opencreed.com>
+ * Copyright (C) 2014 Thibault Saunier <tsaunier@gnome.org>
+ *
+ * gstaggregator.c:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+/**
+ * SECTION: gstaggregator
+ * @short_description: manages a set of pads with the purpose of
+ * aggregating their buffers.
+ * @see_also: gstcollectpads for historical reasons.
+ *
+ * Manages a set of pads with the purpose of aggregating their buffers.
+ * Control is given to the subclass when all pads have data.
+ * <itemizedlist>
+ * <listitem><para>
+ * Base class for mixers and muxers. Implementers should at least implement
+ * the aggregate () vmethod.
+ * </para></listitem>
+ * <listitem><para>
+ * When data is queued on all pads, tha aggregate vmethod is called.
+ * </para></listitem>
+ * <listitem><para>
+ * One can peek at the data on any given GstAggregatorPad with the
+ * gst_aggregator_pad_get_buffer () method, and take ownership of it
+ * with the gst_aggregator_pad_steal_buffer () method. When a buffer
+ * has been taken with steal_buffer (), a new buffer can be queued
+ * on that pad.
+ * </para></listitem>
+ * <listitem><para>
+ * If the subclass wishes to push a buffer downstream in its aggregate
+ * implementation, it should do so through the
+ * gst_aggregator_finish_buffer () method. This method will take care
+ * of sending and ordering mandatory events such as stream start, caps
+ * and segment.
+ * </para></listitem>
+ * <listitem><para>
+ * Same goes for EOS events, which should not be pushed directly by the
+ * subclass, it should instead return GST_FLOW_EOS in its aggregate
+ * implementation.
+ * </para></listitem>
+ * </itemizedlist>
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <string.h> /* strlen */
+
+#include "gstaggregator.h"
+
+
+/* Might become API */
+static void gst_aggregator_merge_tags (GstAggregator * aggregator,
+ const GstTagList * tags, GstTagMergeMode mode);
+
+GST_DEBUG_CATEGORY_STATIC (aggregator_debug);
+#define GST_CAT_DEFAULT aggregator_debug
+
+/* GstAggregatorPad definitions */
+#define PAD_LOCK_EVENT(pad) G_STMT_START { \
+ GST_LOG_OBJECT (pad, "Taking EVENT lock from thread %p", \
+ g_thread_self()); \
+ g_mutex_lock(&pad->priv->event_lock); \
+ GST_LOG_OBJECT (pad, "Took EVENT lock from thread %p", \
+ g_thread_self()); \
+ } G_STMT_END
+
+#define PAD_UNLOCK_EVENT(pad) G_STMT_START { \
+ GST_LOG_OBJECT (pad, "Releasing EVENT lock from thread %p", \
+ g_thread_self()); \
+ g_mutex_unlock(&pad->priv->event_lock); \
+ GST_LOG_OBJECT (pad, "Release EVENT lock from thread %p", \
+ g_thread_self()); \
+ } G_STMT_END
+
+
+#define PAD_WAIT_EVENT(pad) G_STMT_START { \
+ GST_LOG_OBJECT (pad, "Waiting for EVENT on thread %p", \
+ g_thread_self()); \
+ g_cond_wait(&(((GstAggregatorPad* )pad)->priv->event_cond), \
+ &(pad->priv->event_lock)); \
+ GST_LOG_OBJECT (pad, "DONE Waiting for EVENT on thread %p", \
+ g_thread_self()); \
+ } G_STMT_END
+
+#define PAD_BROADCAST_EVENT(pad) { \
+ GST_LOG_OBJECT (pad, "Signaling EVENT from thread %p", \
+ g_thread_self()); \
+ g_cond_broadcast(&(((GstAggregatorPad* )pad)->priv->event_cond)); \
+ }
+
+struct _GstAggregatorPadPrivate
+{
+ gboolean pending_flush_start;
+ gboolean pending_flush_stop;
+ gboolean pending_eos;
+ gboolean flushing;
+
+ GMutex event_lock;
+ GCond event_cond;
+};
+
+static gboolean
+_aggpad_flush (GstAggregatorPad * aggpad, GstAggregator * agg)
+{
+ GstAggregatorPadClass *klass = GST_AGGREGATOR_PAD_GET_CLASS (aggpad);
+
+ aggpad->eos = FALSE;
+ aggpad->priv->flushing = FALSE;
+
+ if (klass->flush)
+ return klass->flush (aggpad, agg);
+
+ return TRUE;
+}
+
+/*************************************
+ * GstAggregator implementation *
+ *************************************/
+static GstElementClass *aggregator_parent_class = NULL;
+
+#define MAIN_CONTEXT_LOCK(self) G_STMT_START { \
+ GST_LOG_OBJECT (self, "Getting MAIN_CONTEXT_LOCK in thread %p", \
+ g_thread_self()); \
+ g_mutex_lock(&((GstAggregator*)self)->priv->mcontext_lock); \
+ GST_LOG_OBJECT (self, "Got MAIN_CONTEXT_LOCK in thread %p", \
+ g_thread_self()); \
+} G_STMT_END
+
+#define MAIN_CONTEXT_UNLOCK(self) G_STMT_START { \
+ g_mutex_unlock(&((GstAggregator*)self)->priv->mcontext_lock); \
+ GST_LOG_OBJECT (self, "Unlocked MAIN_CONTEXT_LOCK in thread %p", \
+ g_thread_self()); \
+} G_STMT_END
+
+struct _GstAggregatorPrivate
+{
+ gint padcount;
+
+ GMainContext *mcontext;
+
+ /* Our state is >= PAUSED */
+ gboolean running;
+
+ /* Ensure that when we remove all sources from the maincontext
+ * we can not add any source, avoiding:
+ * "g_source_attach: assertion '!SOURCE_DESTROYED (source)' failed" */
+ GMutex mcontext_lock;
+
+ gboolean send_stream_start;
+ gboolean send_segment;
+ gboolean flush_seeking;
+ gboolean pending_flush_start;
+ gboolean send_eos;
+ GstFlowReturn flow_return;
+
+ GstCaps *srccaps;
+
+ GstTagList *tags;
+ gboolean tags_changed;
+};
+
+typedef struct
+{
+ GstEvent *event;
+ gboolean result;
+ gboolean flush;
+} EventData;
+
+/**
+ * gst_aggregator_iterate_sinkpads:
+ * @self: The #GstAggregator
+ * @func: The function to call.
+ * @user_data: The data to pass to @func.
+ *
+ * Iterate the sinkpads of aggregator to call a function on them.
+ *
+ * This method guarantees that @func will be called only once for each
+ * sink pad.
+ */
+gboolean
+gst_aggregator_iterate_sinkpads (GstAggregator * self,
+ GstAggregatorPadForeachFunc func, gpointer user_data)
+{
+ gboolean result = FALSE;
+ GstIterator *iter;
+ gboolean done = FALSE;
+ GValue item = { 0, };
+ GList *seen_pads = NULL;
+
+ iter = gst_element_iterate_sink_pads (GST_ELEMENT (self));
+
+ if (!iter)
+ goto no_iter;
+
+ while (!done) {
+ switch (gst_iterator_next (iter, &item)) {
+ case GST_ITERATOR_OK:
+ {
+ GstPad *pad;
+
+ pad = g_value_get_object (&item);
+
+ /* if already pushed, skip. FIXME, find something faster to tag pads */
+ if (pad == NULL || g_list_find (seen_pads, pad)) {
+ g_value_reset (&item);
+ break;
+ }
+
+ GST_LOG_OBJECT (self, "calling function on pad %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+ result = func (self, pad, user_data);
+
+ done = !result;
+
+ seen_pads = g_list_prepend (seen_pads, pad);
+
+ g_value_reset (&item);
+ break;
+ }
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (iter);
+ break;
+ case GST_ITERATOR_ERROR:
+ GST_ERROR_OBJECT (self,
+ "Could not iterate over internally linked pads");
+ done = TRUE;
+ break;
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ }
+ }
+ g_value_unset (&item);
+ gst_iterator_free (iter);
+
+ if (seen_pads == NULL) {
+ GST_DEBUG_OBJECT (self, "No pad seen");
+ return FALSE;
+ }
+
+ g_list_free (seen_pads);
+
+no_iter:
+ return result;
+}
+
+static inline gboolean
+_check_all_pads_with_data_or_eos (GstAggregator * self,
+ GstAggregatorPad * aggpad)
+{
+ if (aggpad->buffer || aggpad->eos) {
+ return TRUE;
+ }
+
+ GST_LOG_OBJECT (aggpad, "Not ready to be aggregated");
+
+ return FALSE;
+}
+
+/**
+ * gst_aggregator_set_src_caps:
+ * @self: The #GstAggregator
+ * @caps: The #GstCaps to set later on the src pad.
+ *
+ * Sets the caps to be used on the src pad.
+ */
+void
+gst_aggregator_set_src_caps (GstAggregator * self, GstCaps * caps)
+{
+ gst_caps_replace (&self->priv->srccaps, caps);
+}
+
+static void
+_reset_flow_values (GstAggregator * self)
+{
+ self->priv->send_stream_start = TRUE;
+ self->priv->send_segment = TRUE;
+ gst_segment_init (&self->segment, GST_FORMAT_TIME);
+}
+
+static inline void
+_push_mandatory_events (GstAggregator * self)
+{
+ GstAggregatorPrivate *priv = self->priv;
+
+ if (g_atomic_int_get (&self->priv->send_stream_start)) {
+ gchar s_id[32];
+
+ GST_INFO_OBJECT (self, "pushing stream start");
+ /* stream-start (FIXME: create id based on input ids) */
+ g_snprintf (s_id, sizeof (s_id), "agg-%08x", g_random_int ());
+ if (!gst_pad_push_event (self->srcpad, gst_event_new_stream_start (s_id))) {
+ GST_WARNING_OBJECT (self->srcpad, "Sending stream start event failed");
+ }
+ g_atomic_int_set (&self->priv->send_stream_start, FALSE);
+ }
+
+ if (self->priv->srccaps) {
+
+ GST_INFO_OBJECT (self, "pushing caps: %" GST_PTR_FORMAT,
+ self->priv->srccaps);
+ if (!gst_pad_push_event (self->srcpad,
+ gst_event_new_caps (self->priv->srccaps))) {
+ GST_WARNING_OBJECT (self->srcpad, "Sending caps event failed");
+ }
+ self->priv->srccaps = NULL;
+ }
+
+ if (g_atomic_int_get (&self->priv->send_segment)) {
+ if (!g_atomic_int_get (&self->priv->flush_seeking)) {
+ GST_INFO_OBJECT (self, "pushing segment");
+ gst_pad_push_event (self->srcpad, gst_event_new_segment (&self->segment));
+ g_atomic_int_set (&self->priv->send_segment, FALSE);
+ }
+ }
+
+ if (priv->tags && priv->tags_changed) {
+ gst_pad_push_event (self->srcpad,
+ gst_event_new_tag (gst_tag_list_ref (priv->tags)));
+ priv->tags_changed = FALSE;
+ }
+}
+
+/**
+ * gst_aggregator_finish_buffer:
+ * @self: The #GstAggregator
+ * @buffer: the #GstBuffer to push.
+ *
+ * This method will take care of sending mandatory events before pushing
+ * the provided buffer.
+ */
+GstFlowReturn
+gst_aggregator_finish_buffer (GstAggregator * self, GstBuffer * buffer)
+{
+ _push_mandatory_events (self);
+
+ if (!g_atomic_int_get (&self->priv->flush_seeking) &&
+ gst_pad_is_active (self->srcpad)) {
+ GST_TRACE_OBJECT (self, "pushing buffer %" GST_PTR_FORMAT, buffer);
+ return gst_pad_push (self->srcpad, buffer);
+ } else {
+ GST_INFO_OBJECT (self, "Not pushing (active: %i, flushing: %i)",
+ g_atomic_int_get (&self->priv->flush_seeking),
+ gst_pad_is_active (self->srcpad));
+ return GST_FLOW_OK;
+ }
+}
+
+static void
+_push_eos (GstAggregator * self)
+{
+ _push_mandatory_events (self);
+
+ self->priv->send_eos = FALSE;
+ gst_pad_push_event (self->srcpad, gst_event_new_eos ());
+}
+
+static void
+_remove_all_sources (GstAggregator * self)
+{
+ GSource *source;
+
+ MAIN_CONTEXT_LOCK (self);
+ while ((source =
+ g_main_context_find_source_by_user_data (self->priv->mcontext,
+ self))) {
+ g_source_destroy (source);
+ }
+ MAIN_CONTEXT_UNLOCK (self);
+}
+
+static gboolean
+aggregate_func (GstAggregator * self)
+{
+ GstAggregatorPrivate *priv = self->priv;
+ GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
+
+ GST_LOG_OBJECT (self, "Checking aggregate");
+ while (priv->send_eos && gst_aggregator_iterate_sinkpads (self,
+ (GstAggregatorPadForeachFunc) _check_all_pads_with_data_or_eos,
+ NULL) && priv->running) {
+ GST_TRACE_OBJECT (self, "Actually aggregating!");
+
+ priv->flow_return = klass->aggregate (self);
+
+ if (priv->flow_return == GST_FLOW_EOS) {
+ g_main_context_wakeup (self->priv->mcontext);
+ _remove_all_sources (self);
+ _push_eos (self);
+ }
+
+ if (priv->flow_return == GST_FLOW_FLUSHING &&
+ g_atomic_int_get (&priv->flush_seeking))
+ priv->flow_return = GST_FLOW_OK;
+
+ GST_LOG_OBJECT (self, "flow return is %s",
+ gst_flow_get_name (priv->flow_return));
+
+ if (priv->flow_return != GST_FLOW_OK)
+ break;
+ }
+
+ return G_SOURCE_REMOVE;
+}
+
+static void
+iterate_main_context_func (GstAggregator * self)
+{
+ if (self->priv->running == FALSE) {
+ GST_DEBUG_OBJECT (self, "Not running anymore");
+
+ return;
+ }
+
+ g_main_context_iteration (self->priv->mcontext, TRUE);
+}
+
+static gboolean
+_start (GstAggregator * self)
+{
+ self->priv->running = TRUE;
+ self->priv->send_stream_start = TRUE;
+ self->priv->send_segment = TRUE;
+ self->priv->send_eos = TRUE;
+ self->priv->srccaps = NULL;
+
+ return TRUE;
+}
+
+static gboolean
+_check_pending_flush_stop (GstAggregatorPad * pad)
+{
+ return (!pad->priv->pending_flush_stop && !pad->priv->pending_flush_start);
+}
+
+static gboolean
+_stop_srcpad_task (GstAggregator * self, GstEvent * flush_start)
+{
+ gboolean res = TRUE;
+
+ GST_INFO_OBJECT (self, "%s srcpad task",
+ flush_start ? "Pausing" : "Stopping");
+
+ self->priv->running = FALSE;
+
+ /* Clean the stack of GSource set on the MainContext */
+ g_main_context_wakeup (self->priv->mcontext);
+ _remove_all_sources (self);
+ if (flush_start) {
+ res = gst_pad_push_event (self->srcpad, flush_start);
+ }
+
+ gst_pad_stop_task (self->srcpad);
+
+ return res;
+}
+
+static void
+_start_srcpad_task (GstAggregator * self)
+{
+ GST_INFO_OBJECT (self, "Starting srcpad task");
+
+ self->priv->running = TRUE;
+ gst_pad_start_task (GST_PAD (self->srcpad),
+ (GstTaskFunction) iterate_main_context_func, self, NULL);
+}
+
+static inline void
+_add_aggregate_gsource (GstAggregator * self)
+{
+ MAIN_CONTEXT_LOCK (self);
+ g_main_context_invoke (self->priv->mcontext, (GSourceFunc) aggregate_func,
+ self);
+ MAIN_CONTEXT_UNLOCK (self);
+}
+
+static GstFlowReturn
+_flush (GstAggregator * self)
+{
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstAggregatorPrivate *priv = self->priv;
+ GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
+
+ GST_DEBUG_OBJECT (self, "Flushing everything");
+ g_atomic_int_set (&priv->send_segment, TRUE);
+ g_atomic_int_set (&priv->flush_seeking, FALSE);
+ g_atomic_int_set (&priv->tags_changed, FALSE);
+ if (klass->flush)
+ ret = klass->flush (self);
+
+ return ret;
+}
+
+static gboolean
+_all_flush_stop_received (GstAggregator * self)
+{
+ GList *tmp;
+ GstAggregatorPad *tmppad;
+
+ GST_OBJECT_LOCK (self);
+ for (tmp = GST_ELEMENT (self)->sinkpads; tmp; tmp = tmp->next) {
+ tmppad = (GstAggregatorPad *) tmp->data;
+
+ if (_check_pending_flush_stop (tmppad) == FALSE) {
+ GST_DEBUG_OBJECT (tmppad, "Is not last %i -- %i",
+ tmppad->priv->pending_flush_start, tmppad->priv->pending_flush_stop);
+ GST_OBJECT_UNLOCK (self);
+ return FALSE;
+ }
+ }
+ GST_OBJECT_UNLOCK (self);
+
+ return TRUE;
+}
+
+/* GstAggregator vmethods default implementations */
+static gboolean
+_sink_event (GstAggregator * self, GstAggregatorPad * aggpad, GstEvent * event)
+{
+ gboolean res = TRUE;
+ GstPad *pad = GST_PAD (aggpad);
+ GstAggregatorPrivate *priv = self->priv;
+ GstAggregatorPadPrivate *padpriv = aggpad->priv;
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_START:
+ {
+ GstBuffer *tmpbuf;
+
+ g_atomic_int_set (&aggpad->priv->flushing, TRUE);
+ /* Remove pad buffer and wake up the streaming thread */
+ tmpbuf = gst_aggregator_pad_steal_buffer (aggpad);
+ gst_buffer_replace (&tmpbuf, NULL);
+ if (g_atomic_int_compare_and_exchange (&padpriv->pending_flush_start,
+ TRUE, FALSE) == TRUE) {
+ GST_DEBUG_OBJECT (aggpad, "Expecting FLUSH_STOP now");
+ g_atomic_int_set (&padpriv->pending_flush_stop, TRUE);
+ }
+
+ if (g_atomic_int_get (&priv->flush_seeking)) {
+ /* If flush_seeking we forward the first FLUSH_START */
+ if (g_atomic_int_compare_and_exchange (&priv->pending_flush_start,
+ TRUE, FALSE) == TRUE) {
+
+ GST_DEBUG_OBJECT (self, "Flushing, pausing srcpad task");
+ priv->flow_return = GST_FLOW_OK;
+ _stop_srcpad_task (self, event);
+
+ GST_INFO_OBJECT (self, "Getting STREAM_LOCK while seeking");
+ GST_PAD_STREAM_LOCK (self->srcpad);
+ GST_LOG_OBJECT (self, "GOT STREAM_LOCK");
+ event = NULL;
+ goto eat;
+ }
+ }
+
+ /* We forward only in one case: right after flush_seeking */
+ goto eat;
+ }
+ case GST_EVENT_FLUSH_STOP:
+ {
+ GST_DEBUG_OBJECT (aggpad, "Got FLUSH_STOP");
+
+ _aggpad_flush (aggpad, self);
+ if (g_atomic_int_get (&priv->flush_seeking)) {
+ g_atomic_int_set (&aggpad->priv->pending_flush_stop, FALSE);
+
+ if (g_atomic_int_get (&priv->flush_seeking)) {
+ if (_all_flush_stop_received (self)) {
+ /* That means we received FLUSH_STOP/FLUSH_STOP on
+ * all sinkpads -- Seeking is Done... sending FLUSH_STOP */
+ _flush (self);
+ gst_pad_push_event (self->srcpad, event);
+ priv->send_eos = TRUE;
+ event = NULL;
+ _add_aggregate_gsource (self);
+
+ GST_INFO_OBJECT (self, "Releasing source pad STREAM_LOCK");
+ GST_PAD_STREAM_UNLOCK (self->srcpad);
+ _start_srcpad_task (self);
+ }
+ }
+ }
+
+ /* We never forward the event */
+ goto eat;
+ }
+ case GST_EVENT_EOS:
+ {
+ GST_DEBUG_OBJECT (aggpad, "EOS");
+
+ /* We still have a buffer, and we don't want the subclass to have to
+ * check for it. Mark pending_eos, eos will be set when steal_buffer is
+ * called
+ */
+ PAD_LOCK_EVENT (aggpad);
+ if (!aggpad->buffer) {
+ aggpad->eos = TRUE;
+ } else {
+ aggpad->priv->pending_eos = TRUE;
+ }
+ PAD_UNLOCK_EVENT (aggpad);
+
+ _add_aggregate_gsource (self);
+ goto eat;
+ }
+ case GST_EVENT_SEGMENT:
+ {
+ gst_event_copy_segment (event, &aggpad->segment);
+ PAD_UNLOCK_EVENT (aggpad);
+
+ goto eat;
+ }
+ case GST_EVENT_STREAM_START:
+ {
+ goto eat;
+ }
+ case GST_EVENT_TAG:
+ {
+ GstTagList *tags;
+
+ gst_event_parse_tag (event, &tags);
+
+ if (gst_tag_list_get_scope (tags) == GST_TAG_SCOPE_STREAM) {
+ gst_aggregator_merge_tags (self, tags, GST_TAG_MERGE_REPLACE);
+ gst_event_unref (event);
+ event = NULL;
+ goto eat;
+ }
+ break;
+ }
+ default:
+ {
+ break;
+ }
+ }
+
+ GST_DEBUG_OBJECT (pad, "Forwarding event: %" GST_PTR_FORMAT, event);
+ return gst_pad_event_default (pad, GST_OBJECT (self), event);
+
+eat:
+ GST_DEBUG_OBJECT (pad, "Eating event: %" GST_PTR_FORMAT, event);
+ if (event)
+ gst_event_unref (event);
+
+ return res;
+}
+
+static gboolean
+_stop (GstAggregator * agg)
+{
+ _reset_flow_values (agg);
+
+ return TRUE;
+}
+
+/* GstElement vmethods implementations */
+static GstStateChangeReturn
+_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+ GstAggregator *self = GST_AGGREGATOR (element);
+ GstAggregatorClass *agg_class = GST_AGGREGATOR_GET_CLASS (self);
+
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ agg_class->start (self);
+ break;
+ default:
+ break;
+ }
+
+ if ((ret =
+ GST_ELEMENT_CLASS (aggregator_parent_class)->change_state (element,
+ transition)) == GST_STATE_CHANGE_FAILURE)
+ goto failure;
+
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ agg_class->stop (self);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+
+failure:
+ {
+ GST_ERROR_OBJECT (element, "parent failed state change");
+ return ret;
+ }
+}
+
+static void
+_release_pad (GstElement * element, GstPad * pad)
+{
+ GstBuffer *tmpbuf;
+
+ GstAggregator *self = GST_AGGREGATOR (element);
+ GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
+
+ GST_INFO_OBJECT (pad, "Removing pad");
+
+ g_atomic_int_set (&aggpad->priv->flushing, TRUE);
+ tmpbuf = gst_aggregator_pad_steal_buffer (aggpad);
+ gst_buffer_replace (&tmpbuf, NULL);
+ gst_element_remove_pad (element, pad);
+
+ /* Something changed make sure we try to aggregate */
+ _add_aggregate_gsource (self);
+}
+
+static GstPad *
+_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
+{
+ GstAggregator *self;
+ GstAggregatorPad *agg_pad;
+
+ GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
+ GstAggregatorPrivate *priv = GST_AGGREGATOR (element)->priv;
+
+ self = GST_AGGREGATOR (element);
+
+ if (templ == gst_element_class_get_pad_template (klass, "sink_%u")) {
+ guint serial = 0;
+ gchar *name = NULL;
+
+ GST_OBJECT_LOCK (element);
+ if (req_name == NULL || strlen (req_name) < 6
+ || !g_str_has_prefix (req_name, "sink_")) {
+ /* no name given when requesting the pad, use next available int */
+ priv->padcount++;
+ } else {
+ /* parse serial number from requested padname */
+ serial = g_ascii_strtoull (&req_name[5], NULL, 10);
+ if (serial >= priv->padcount)
+ priv->padcount = serial + 1;
+ }
+
+ name = g_strdup_printf ("sink_%u", priv->padcount);
+ agg_pad = g_object_new (GST_AGGREGATOR_GET_CLASS (self)->sinkpads_type,
+ "name", name, "direction", GST_PAD_SINK, "template", templ, NULL);
+ g_free (name);
+ GST_OBJECT_UNLOCK (element);
+
+ } else {
+ return NULL;
+ }
+
+ GST_DEBUG_OBJECT (element, "Adding pad %s", GST_PAD_NAME (agg_pad));
+
+ if (priv->running)
+ gst_pad_set_active (GST_PAD (agg_pad), TRUE);
+
+ /* add the pad to the element */
+ gst_element_add_pad (element, GST_PAD (agg_pad));
+
+ return GST_PAD (agg_pad);
+}
+
+static gboolean
+_src_query (GstAggregator * self, GstQuery * query)
+{
+ gboolean res = TRUE;
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_SEEKING:
+ {
+ GstFormat format;
+
+ /* don't pass it along as some (file)sink might claim it does
+ * whereas with a collectpads in between that will not likely work */
+ gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
+ gst_query_set_seeking (query, format, FALSE, 0, -1);
+ res = TRUE;
+
+ goto discard;
+ }
+ default:
+ break;
+ }
+
+ return gst_pad_query_default (self->srcpad, GST_OBJECT (self), query);
+
+discard:
+ return res;
+}
+
+static gboolean
+event_forward_func (GstPad * pad, EventData * evdata)
+{
+ gboolean ret = TRUE;
+ GstPad *peer = gst_pad_get_peer (pad);
+ GstAggregatorPadPrivate *padpriv = GST_AGGREGATOR_PAD (pad)->priv;
+
+ if (peer) {
+ ret = gst_pad_send_event (peer, gst_event_ref (evdata->event));
+ GST_DEBUG_OBJECT (pad, "return of event push is %d", ret);
+ gst_object_unref (peer);
+ }
+
+ evdata->result &= ret;
+
+ if (ret == FALSE) {
+ if (GST_EVENT_TYPE (evdata->event) == GST_EVENT_SEEK)
+ GST_ERROR_OBJECT (pad, "Event %" GST_PTR_FORMAT " failed", evdata->event);
+ else
+ GST_INFO_OBJECT (pad, "Event %" GST_PTR_FORMAT " failed", evdata->event);
+
+ if (evdata->flush) {
+ padpriv->pending_flush_start = FALSE;
+ padpriv->pending_flush_stop = FALSE;
+ }
+ }
+
+ /* Always send to all pads */
+ return FALSE;
+}
+
+static gboolean
+_set_flush_pending (GstAggregator * self, GstAggregatorPad * pad,
+ gpointer udata)
+{
+ pad->priv->pending_flush_start = TRUE;
+ pad->priv->pending_flush_stop = FALSE;
+
+ return TRUE;
+}
+
+static gboolean
+_forward_event_to_all_sinkpads (GstAggregator * self, GstEvent * event,
+ gboolean flush)
+{
+ EventData evdata;
+
+ evdata.event = event;
+ evdata.result = TRUE;
+ evdata.flush = flush;
+
+ /* We first need to set all pads as flushing in a first pass
+ * as flush_start flush_stop is sometimes sent synchronously
+ * while we send the seek event */
+ if (flush)
+ gst_aggregator_iterate_sinkpads (self,
+ (GstAggregatorPadForeachFunc) _set_flush_pending, NULL);
+ gst_pad_forward (self->srcpad, (GstPadForwardFunction) event_forward_func,
+ &evdata);
+
+ gst_event_unref (event);
+
+ return evdata.result;
+}
+
+static gboolean
+_do_seek (GstAggregator * self, GstEvent * event)
+{
+ gdouble rate;
+ GstFormat fmt;
+ GstSeekFlags flags;
+ GstSeekType start_type, stop_type;
+ gint64 start, stop;
+ gboolean flush;
+ gboolean res;
+ GstAggregatorPrivate *priv = self->priv;
+
+ gst_event_parse_seek (event, &rate, &fmt, &flags, &start_type,
+ &start, &stop_type, &stop);
+
+ GST_INFO_OBJECT (self, "starting SEEK");
+
+ flush = flags & GST_SEEK_FLAG_FLUSH;
+
+ if (flush) {
+ g_atomic_int_set (&priv->pending_flush_start, TRUE);
+ g_atomic_int_set (&priv->flush_seeking, TRUE);
+ }
+
+ gst_segment_do_seek (&self->segment, rate, fmt, flags, start_type, start,
+ stop_type, stop, NULL);
+
+ /* forward the seek upstream */
+ res = _forward_event_to_all_sinkpads (self, event, flush);
+ event = NULL;
+
+ if (!res) {
+ g_atomic_int_set (&priv->flush_seeking, FALSE);
+ g_atomic_int_set (&priv->pending_flush_start, FALSE);
+ }
+
+ GST_INFO_OBJECT (self, "seek done, result: %d", res);
+
+ return res;
+}
+
+static gboolean
+_src_event (GstAggregator * self, GstEvent * event)
+{
+ gboolean res = TRUE;
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ {
+ res = _do_seek (self, event);
+ event = NULL;
+ goto done;
+ }
+ case GST_EVENT_NAVIGATION:
+ {
+ /* navigation is rather pointless. */
+ res = FALSE;
+ gst_event_unref (event);
+ goto done;
+ }
+ default:
+ {
+ break;
+ }
+ }
+
+ return _forward_event_to_all_sinkpads (self, event, FALSE);
+
+done:
+ return res;
+}
+
+static gboolean
+src_event_func (GstPad * pad, GstObject * parent, GstEvent * event)
+{
+ GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (parent);
+
+ return klass->src_event (GST_AGGREGATOR (parent), event);
+}
+
+static gboolean
+src_query_func (GstPad * pad, GstObject * parent, GstQuery * query)
+{
+ GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (parent);
+
+ return klass->src_query (GST_AGGREGATOR (parent), query);
+}
+
+static gboolean
+src_activate_mode (GstPad * pad,
+ GstObject * parent, GstPadMode mode, gboolean active)
+{
+ GstAggregator *self = GST_AGGREGATOR (parent);
+ GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (parent);
+
+ if (klass->src_activate) {
+ if (klass->src_activate (self, mode, active) == FALSE) {
+ return FALSE;
+ }
+ }
+
+ if (active == TRUE) {
+ switch (mode) {
+ case GST_PAD_MODE_PUSH:
+ {
+ GST_INFO_OBJECT (pad, "Activating pad!");
+ _start_srcpad_task (self);
+ return TRUE;
+ }
+ default:
+ {
+ GST_ERROR_OBJECT (pad, "Only supported mode is PUSH");
+ return FALSE;
+ }
+ }
+ }
+
+ /* deactivating */
+ GST_INFO_OBJECT (self, "Deactivating srcpad");
+ _stop_srcpad_task (self, FALSE);
+
+ return TRUE;
+}
+
+static gboolean
+_sink_query (GstAggregator * self, GstAggregatorPad * aggpad, GstQuery * query)
+{
+ GstPad *pad = GST_PAD (aggpad);
+
+ return gst_pad_query_default (pad, GST_OBJECT (self), query);
+}
+
+/* GObject vmethods implementations */
+static void
+gst_aggregator_class_init (GstAggregatorClass * klass)
+{
+ GstElementClass *gstelement_class = (GstElementClass *) klass;
+
+ aggregator_parent_class = g_type_class_peek_parent (klass);
+ g_type_class_add_private (klass, sizeof (GstAggregatorPrivate));
+
+ GST_DEBUG_CATEGORY_INIT (aggregator_debug, "aggregator",
+ GST_DEBUG_FG_MAGENTA, "GstAggregator");
+
+ klass->sinkpads_type = GST_TYPE_AGGREGATOR_PAD;
+ klass->start = _start;
+ klass->stop = _stop;
+
+ klass->sink_event = _sink_event;
+ klass->sink_query = _sink_query;
+
+ klass->src_event = _src_event;
+ klass->src_query = _src_query;
+
+ gstelement_class->request_new_pad = GST_DEBUG_FUNCPTR (_request_new_pad);
+ gstelement_class->release_pad = GST_DEBUG_FUNCPTR (_release_pad);
+ gstelement_class->change_state = GST_DEBUG_FUNCPTR (_change_state);
+}
+
+static void
+gst_aggregator_init (GstAggregator * self, GstAggregatorClass * klass)
+{
+ GstPadTemplate *pad_template;
+ GstAggregatorPrivate *priv;
+
+ g_return_if_fail (klass->aggregate != NULL);
+
+ self->priv =
+ G_TYPE_INSTANCE_GET_PRIVATE (self, GST_TYPE_AGGREGATOR,
+ GstAggregatorPrivate);
+
+ priv = self->priv;
+
+ pad_template =
+ gst_element_class_get_pad_template (GST_ELEMENT_CLASS (klass), "src");
+ g_return_if_fail (pad_template != NULL);
+
+ priv->padcount = -1;
+ priv->tags_changed = FALSE;
+ _reset_flow_values (self);
+
+ priv->mcontext = g_main_context_new ();
+ self->srcpad = gst_pad_new_from_template (pad_template, "src");
+
+ gst_pad_set_event_function (self->srcpad,
+ GST_DEBUG_FUNCPTR ((GstPadEventFunction) src_event_func));
+ gst_pad_set_query_function (self->srcpad,
+ GST_DEBUG_FUNCPTR ((GstPadQueryFunction) src_query_func));
+ gst_pad_set_activatemode_function (self->srcpad,
+ GST_DEBUG_FUNCPTR ((GstPadActivateModeFunction) src_activate_mode));
+
+ gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
+}
+
+/* we can't use G_DEFINE_ABSTRACT_TYPE because we need the klass in the _init
+ * method to get to the padtemplates */
+GType
+gst_aggregator_get_type (void)
+{
+ static volatile gsize type = 0;
+
+ if (g_once_init_enter (&type)) {
+ GType _type;
+ static const GTypeInfo info = {
+ sizeof (GstAggregatorClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_aggregator_class_init,
+ NULL,
+ NULL,
+ sizeof (GstAggregator),
+ 0,
+ (GInstanceInitFunc) gst_aggregator_init,
+ };
+
+ _type = g_type_register_static (GST_TYPE_ELEMENT,
+ "GstAggregator", &info, G_TYPE_FLAG_ABSTRACT);
+ g_once_init_leave (&type, _type);
+ }
+ return type;
+}
+
+static GstFlowReturn
+_chain (GstPad * pad, GstObject * object, GstBuffer * buffer)
+{
+ GstBuffer *actual_buf = buffer;
+ GstAggregator *self = GST_AGGREGATOR (object);
+ GstAggregatorPrivate *priv = self->priv;
+ GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
+ GstAggregatorClass *aggclass = GST_AGGREGATOR_GET_CLASS (object);
+
+ GST_DEBUG_OBJECT (aggpad, "Start chaining a buffer %" GST_PTR_FORMAT, buffer);
+
+ if (g_atomic_int_get (&aggpad->priv->flushing) == TRUE)
+ goto flushing;
+
+ if (g_atomic_int_get (&aggpad->priv->pending_eos) == TRUE)
+ goto eos;
+
+ PAD_LOCK_EVENT (aggpad);
+ if (aggpad->buffer) {
+ GST_DEBUG_OBJECT (aggpad, "Waiting for buffer to be consumed");
+ PAD_WAIT_EVENT (aggpad);
+ }
+ PAD_UNLOCK_EVENT (aggpad);
+
+ if (g_atomic_int_get (&aggpad->priv->flushing) == TRUE)
+ goto flushing;
+
+
+ if (aggclass->clip) {
+ aggclass->clip (self, aggpad, buffer, &actual_buf);
+ }
+
+ PAD_LOCK_EVENT (aggpad);
+ if (aggpad->buffer)
+ gst_buffer_unref (aggpad->buffer);
+ aggpad->buffer = actual_buf;
+ PAD_UNLOCK_EVENT (aggpad);
+
+ _add_aggregate_gsource (self);
+
+ GST_DEBUG_OBJECT (aggpad, "Done chaining");
+
+ return priv->flow_return;
+
+flushing:
+
+ GST_DEBUG_OBJECT (aggpad, "We are flushing");
+
+ return GST_FLOW_FLUSHING;
+
+eos:
+
+ GST_DEBUG_OBJECT (pad, "We are EOS already...");
+
+ return GST_FLOW_EOS;
+}
+
+static gboolean
+pad_query_func (GstPad * pad, GstObject * parent, GstQuery * query)
+{
+ GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (parent);
+
+ return klass->sink_query (GST_AGGREGATOR (parent),
+ GST_AGGREGATOR_PAD (pad), query);
+}
+
+static gboolean
+pad_event_func (GstPad * pad, GstObject * parent, GstEvent * event)
+{
+ GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (parent);
+
+ return klass->sink_event (GST_AGGREGATOR (parent),
+ GST_AGGREGATOR_PAD (pad), event);
+}
+
+static gboolean
+pad_activate_mode_func (GstPad * pad,
+ GstObject * parent, GstPadMode mode, gboolean active)
+{
+ GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
+
+ if (active == FALSE) {
+ PAD_LOCK_EVENT (aggpad);
+ g_atomic_int_set (&aggpad->priv->flushing, TRUE);
+ gst_buffer_replace (&aggpad->buffer, NULL);
+ PAD_BROADCAST_EVENT (aggpad);
+ PAD_UNLOCK_EVENT (aggpad);
+ } else {
+ g_atomic_int_set (&aggpad->priv->flushing, FALSE);
+ PAD_LOCK_EVENT (aggpad);
+ PAD_BROADCAST_EVENT (aggpad);
+ PAD_UNLOCK_EVENT (aggpad);
+ }
+
+ return TRUE;
+}
+
+/***********************************
+ * GstAggregatorPad implementation *
+ ************************************/
+G_DEFINE_TYPE (GstAggregatorPad, gst_aggregator_pad, GST_TYPE_PAD);
+
+static void
+_pad_constructed (GObject * object)
+{
+ GstPad *pad = GST_PAD (object);
+
+ gst_pad_set_chain_function (pad,
+ GST_DEBUG_FUNCPTR ((GstPadChainFunction) _chain));
+ gst_pad_set_event_function (pad,
+ GST_DEBUG_FUNCPTR ((GstPadEventFunction) pad_event_func));
+ gst_pad_set_query_function (pad,
+ GST_DEBUG_FUNCPTR ((GstPadQueryFunction) pad_query_func));
+ gst_pad_set_activatemode_function (pad,
+ GST_DEBUG_FUNCPTR ((GstPadActivateModeFunction) pad_activate_mode_func));
+}
+
+static void
+gst_aggregator_pad_class_init (GstAggregatorPadClass * klass)
+{
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+
+ g_type_class_add_private (klass, sizeof (GstAggregatorPadPrivate));
+
+ gobject_class->constructed = GST_DEBUG_FUNCPTR (_pad_constructed);
+}
+
+static void
+gst_aggregator_pad_init (GstAggregatorPad * pad)
+{
+ pad->priv =
+ G_TYPE_INSTANCE_GET_PRIVATE (pad, GST_TYPE_AGGREGATOR_PAD,
+ GstAggregatorPadPrivate);
+
+ pad->buffer = NULL;
+ g_mutex_init (&pad->priv->event_lock);
+ g_cond_init (&pad->priv->event_cond);
+
+}
+
+/**
+ * gst_aggregator_pad_steal_buffer:
+ * @pad: the pad to get buffer from
+ *
+ * Steal the ref to the buffer currently queued in @pad.
+ *
+ * Returns: (transfer full): The buffer in @pad or NULL if no buffer was
+ * queued. You should unref the buffer after usage.
+ */
+GstBuffer *
+gst_aggregator_pad_steal_buffer (GstAggregatorPad * pad)
+{
+ GstBuffer *buffer = NULL;
+
+ PAD_LOCK_EVENT (pad);
+ if (pad->buffer) {
+ GST_TRACE_OBJECT (pad, "Consuming buffer");
+ buffer = pad->buffer;
+ pad->buffer = NULL;
+ if (pad->priv->pending_eos) {
+ pad->priv->pending_eos = FALSE;
+ pad->eos = TRUE;
+ }
+ PAD_BROADCAST_EVENT (pad);
+ GST_DEBUG_OBJECT (pad, "Consummed: %" GST_PTR_FORMAT, buffer);
+ }
+ PAD_UNLOCK_EVENT (pad);
+
+ return buffer;
+}
+
+/**
+ * gst_aggregator_pad_get_buffer:
+ * @pad: the pad to get buffer from
+ *
+ * Returns: (transfer full): A reference to the buffer in @pad or
+ * NULL if no buffer was queued. You should unref the buffer after
+ * usage.
+ */
+GstBuffer *
+gst_aggregator_pad_get_buffer (GstAggregatorPad * pad)
+{
+ GstBuffer *buffer = NULL;
+
+ PAD_LOCK_EVENT (pad);
+ if (pad->buffer)
+ buffer = gst_buffer_ref (pad->buffer);
+ PAD_UNLOCK_EVENT (pad);
+
+ return buffer;
+}
+
+/**
+ * gst_aggregator_merge_tags:
+ * @self: a #GstAggregator
+ * @tags: a #GstTagList to merge
+ * @mode: the #GstTagMergeMode to use
+ *
+ * Adds tags to so-called pending tags, which will be processed
+ * before pushing out data downstream.
+ *
+ * Note that this is provided for convenience, and the subclass is
+ * not required to use this and can still do tag handling on its own.
+ *
+ * MT safe.
+ */
+void
+gst_aggregator_merge_tags (GstAggregator * self,
+ const GstTagList * tags, GstTagMergeMode mode)
+{
+ GstTagList *otags;
+
+ g_return_if_fail (GST_IS_AGGREGATOR (self));
+ g_return_if_fail (tags == NULL || GST_IS_TAG_LIST (tags));
+
+ /* FIXME Check if we can use OBJECT lock here! */
+ GST_OBJECT_LOCK (self);
+ if (tags)
+ GST_DEBUG_OBJECT (self, "merging tags %" GST_PTR_FORMAT, tags);
+ otags = self->priv->tags;
+ self->priv->tags = gst_tag_list_merge (self->priv->tags, tags, mode);
+ if (otags)
+ gst_tag_list_unref (otags);
+ self->priv->tags_changed = TRUE;
+ GST_OBJECT_UNLOCK (self);
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2014 Mathieu Duponchelle <mathieu.duponchelle@oencreed.com>
+ * Copyright (C) 2014 Thibault Saunier <tsaunier@gnome.org>
+ *
+ * gstaggregator.c:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_AGGREGATOR_H__
+#define __GST_AGGREGATOR_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+/**************************
+ * GstAggregator Structs *
+ *************************/
+
+typedef struct _GstAggregator GstAggregator;
+typedef struct _GstAggregatorPrivate GstAggregatorPrivate;
+typedef struct _GstAggregatorClass GstAggregatorClass;
+
+/************************
+ * GstAggregatorPad API *
+ ***********************/
+
+#define GST_TYPE_AGGREGATOR_PAD (gst_aggregator_pad_get_type())
+#define GST_AGGREGATOR_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AGGREGATOR_PAD, GstAggregatorPad))
+#define GST_AGGREGATOR_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AGGREGATOR_PAD, GstAggregatorPadClass))
+#define GST_AGGREGATOR_PAD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AGGREGATOR_PAD, GstAggregatorPadClass))
+#define GST_IS_AGGREGATOR_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AGGREGATOR_PAD))
+#define GST_IS_AGGREGATOR_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AGGREGATOR_PAD))
+
+/****************************
+ * GstAggregatorPad Structs *
+ ***************************/
+
+typedef struct _GstAggregatorPad GstAggregatorPad;
+typedef struct _GstAggregatorPadClass GstAggregatorPadClass;
+typedef struct _GstAggregatorPadPrivate GstAggregatorPadPrivate;
+
+/**
+ * GstAggregatorPad:
+ * @buffer: currently queued buffer.
+ * @segment: last segment received.
+ *
+ * The implementation the GstPad to use with #GstAggregator
+ */
+struct _GstAggregatorPad
+{
+ GstPad parent;
+
+ GstBuffer * buffer;
+ GstSegment segment;
+ gboolean eos;
+
+ /* < Private > */
+ GstAggregatorPadPrivate * priv;
+
+ gpointer _gst_reserved[GST_PADDING];
+};
+
+/**
+ * GstAggregatorPadClass:
+ * @flush: Optional
+ * Called when the pad has received a flush stop, this is the place
+ * to flush any information specific to the pad, it allows for individual
+ * pads to be flushed while others might not be.
+ *
+ */
+struct _GstAggregatorPadClass
+{
+ GstPadClass parent_class;
+
+ GstFlowReturn (*flush) (GstAggregatorPad * aggpad, GstAggregator * aggregator);
+
+ /*< private >*/
+ gpointer _gst_reserved[GST_PADDING];
+};
+
+GType gst_aggregator_pad_get_type (void);
+
+/****************************
+ * GstAggregatorPad methods *
+ ***************************/
+
+GstBuffer * gst_aggregator_pad_steal_buffer (GstAggregatorPad * pad);
+GstBuffer * gst_aggregator_pad_get_buffer (GstAggregatorPad * pad);
+
+/*********************
+ * GstAggregator API *
+ ********************/
+
+#define GST_TYPE_AGGREGATOR (gst_aggregator_get_type())
+#define GST_AGGREGATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AGGREGATOR,GstAggregator))
+#define GST_AGGREGATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AGGREGATOR,GstAggregatorClass))
+#define GST_AGGREGATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AGGREGATOR,GstAggregatorClass))
+#define GST_IS_AGGREGATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AGGREGATOR))
+#define GST_IS_AGGREGATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AGGREGATOR))
+
+#define GST_FLOW_CUSTOM_SUCCESS GST_FLOW_NOT_HANDLED
+
+/**
+ * GstAggregator:
+ * @aggregator_pads: #GList of #GstAggregatorPad managed by this #GstAggregator.
+ *
+ * Collectpads object.
+ */
+struct _GstAggregator
+{
+ GstElement parent;
+
+ GstPad * srcpad;
+
+ GstSegment segment;
+
+ /*< private >*/
+ GstAggregatorPrivate * priv;
+
+ gpointer _gst_reserved[GST_PADDING];
+};
+
+/**
+ * GstAggregatorClass:
+ * @sinkpads_type: Optional.
+ * The type of the pads that should be created when
+ * GstElement.request_new_pad is called.
+ * @flush: Optional.
+ * Called after a succesful flushing seek, once all the flush
+ * stops have been received. Flush pad-specific data in
+ * #GstAggregatorPad->flush.
+ * @clip: Optional.
+ * Called when a buffer is received on a sink pad, the task
+ * of clipping it and translating it to the current segment
+ * falls on the subclass.
+ * @sink_event: Optional.
+ * Called when an event is received on a sink pad, the subclass
+ * should always chain up.
+ * @sink_query: Optional.
+ * Called when a query is received on a sink pad, the subclass
+ * should always chain up.
+ * @src_event: Optional.
+ * Called when an event is received on the src pad, the subclass
+ * should always chain up.
+ * @src_query: Optional.
+ * Called when a query is received on the src pad, the subclass
+ * should always chain up.
+ * @src_activate: Optional.
+ * Called when the src pad is activated, it will start/stop its
+ * pad task right after that call.
+ * @aggregate: Mandatory.
+ * Called when buffers are queued on all sinkpads. Classes
+ * should iterate the GstElement->sinkpads and peek or steal
+ * buffers from the #GstAggregatorPads. If the subclass returns
+ * GST_FLOW_EOS, sending of the eos event will be taken care
+ * of. Once / if a buffer has been constructed from the
+ * aggregated buffers, the subclass should call _finish_buffer.
+ * @stop: Optional.
+ * Should be linked up first. Called when the
+ * element goes from PAUSED to READY. The subclass should free
+ * all resources and reset its state.
+ * @start: Optional.
+ * Should be linked up first. Called when the element goes from
+ * READY to PAUSED. The subclass should get ready to process
+ * aggregated buffers.
+ *
+ * The aggregator base class will handle in a thread-safe way all manners of
+ * concurrent flushes, seeks, pad additions and removals, leaving to the
+ * subclass the responsibility of clipping buffers, and aggregating buffers in
+ * the way the implementor sees fit.
+ *
+ * It will also take care of event ordering (stream-start, segment, eos).
+ *
+ * Basically, a basic implementation will override @aggregate, and call
+ * _finish_buffer from inside that function.
+ */
+struct _GstAggregatorClass {
+ GstElementClass parent_class;
+
+ GType sinkpads_type;
+
+ GstFlowReturn (*flush) (GstAggregator * aggregator);
+
+ GstFlowReturn (*clip) (GstAggregator * agg,
+ GstAggregatorPad * bpad,
+ GstBuffer * buf,
+ GstBuffer ** outbuf);
+
+ /* sinkpads virtual methods */
+ gboolean (*sink_event) (GstAggregator * aggregate,
+ GstAggregatorPad * bpad,
+ GstEvent * event);
+
+ gboolean (*sink_query) (GstAggregator * aggregate,
+ GstAggregatorPad * bpad,
+ GstQuery * query);
+
+ /* srcpad virtual methods */
+ gboolean (*src_event) (GstAggregator * aggregate,
+ GstEvent * event);
+
+ gboolean (*src_query) (GstAggregator * aggregate,
+ GstQuery * query);
+
+ gboolean (*src_activate) (GstAggregator * aggregator,
+ GstPadMode mode,
+ gboolean active);
+
+ GstFlowReturn (*aggregate) (GstAggregator * aggregator);
+
+ gboolean (*stop) (GstAggregator * aggregator);
+
+ gboolean (*start) (GstAggregator * aggregator);
+
+ /*< private >*/
+ gpointer _gst_reserved[GST_PADDING];
+};
+
+/*************************
+ * GstAggregator methods *
+ ************************/
+
+GstFlowReturn gst_aggregator_finish_buffer (GstAggregator * agg,
+ GstBuffer * buffer);
+void gst_aggregator_set_src_caps (GstAggregator * agg,
+ GstCaps * caps);
+
+GType gst_aggregator_get_type(void);
+
+/* API that should eventually land in GstElement itself*/
+typedef gboolean (*GstAggregatorPadForeachFunc) (GstAggregator * self,
+ GstPad * pad,
+ gpointer user_data);
+gboolean gst_aggregator_iterate_sinkpads (GstAggregator * self,
+ GstAggregatorPadForeachFunc func,
+ gpointer user_data);
+
+
+G_END_DECLS
+
+#endif /* __GST_AGGREGATOR_H__ */
--- /dev/null
+/*
+ * aggregator.c - GstAggregator testsuite
+ * Copyright (C) 2006 Alessandro Decina <alessandro.d@gmail.com>
+ * Copyright (C) 2014 Mathieu Duponchelle <mathieu.duponchelle@oencreed.com>
+ * Copyright (C) 2014 Thibault Saunier <tsaunier@opencreed.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <gst/check/gstcheck.h>
+#include <gst/base/gstaggregator.h>
+
+/* dummy aggregator based element */
+
+#define GST_TYPE_TEST_AGGREGATOR (gst_test_aggregator_get_type ())
+#define GST_TEST_AGGREGATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TEST_AGGREGATOR, GstTestAggregator))
+#define GST_TEST_AGGREGATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TEST_AGGREGATOR, GstTestAggregatorClass))
+#define GST_TEST_AGGREGATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_TEST_AGGREGATOR, GstTestAggregatorClass))
+
+#define fail_error_message(msg) \
+ G_STMT_START { \
+ GError *error; \
+ gst_message_parse_error(msg, &error, NULL); \
+ fail_unless(FALSE, "Error Message from %s : %s", \
+ GST_OBJECT_NAME (GST_MESSAGE_SRC(msg)), error->message); \
+ g_error_free (error); \
+ } G_STMT_END;
+
+typedef struct _GstTestAggregator GstTestAggregator;
+typedef struct _GstTestAggregatorClass GstTestAggregatorClass;
+
+static GType gst_test_aggregator_get_type (void);
+
+#define BUFFER_DURATION 100000000 /* 10 frames per second */
+
+struct _GstTestAggregator
+{
+ GstAggregator parent;
+
+ guint64 timestamp;
+};
+
+struct _GstTestAggregatorClass
+{
+ GstAggregatorClass parent_class;
+};
+
+static GstFlowReturn
+gst_test_aggregator_aggregate (GstAggregator * aggregator)
+{
+ GstIterator *iter;
+ gboolean all_eos = TRUE;
+ GstTestAggregator *testagg;
+ GstBuffer *buf;
+
+ gboolean done_iterating = FALSE;
+
+ testagg = GST_TEST_AGGREGATOR (aggregator);
+
+ iter = gst_element_iterate_sink_pads (GST_ELEMENT (testagg));
+ while (!done_iterating) {
+ GstBuffer *buffer;
+ GValue value = { 0, };
+ GstAggregatorPad *pad;
+
+ switch (gst_iterator_next (iter, &value)) {
+ case GST_ITERATOR_OK:
+ pad = g_value_get_object (&value);
+
+ if (pad->eos == FALSE)
+ all_eos = FALSE;
+ buffer = gst_aggregator_pad_steal_buffer (pad);
+ gst_buffer_replace (&buffer, NULL);
+
+ g_value_reset (&value);
+ break;
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (iter);
+ break;
+ case GST_ITERATOR_ERROR:
+ GST_WARNING_OBJECT (testagg, "Sinkpads iteration error");
+ done_iterating = TRUE;
+ break;
+ case GST_ITERATOR_DONE:
+ done_iterating = TRUE;
+ break;
+ }
+ }
+ gst_iterator_free (iter);
+
+ if (all_eos == TRUE) {
+ GST_ERROR_OBJECT (testagg, "no data available, must be EOS");
+ gst_pad_push_event (aggregator->srcpad, gst_event_new_eos ());
+ return GST_FLOW_EOS;
+ }
+
+ buf = gst_buffer_new ();
+ GST_BUFFER_TIMESTAMP (buf) = testagg->timestamp;
+ GST_BUFFER_DURATION (buf) = BUFFER_DURATION;
+ testagg->timestamp += BUFFER_DURATION;
+
+ gst_aggregator_finish_buffer (aggregator, buf);
+
+ /* We just check finish_frame return FLOW_OK */
+ return GST_FLOW_OK;
+}
+
+#define gst_test_aggregator_parent_class parent_class
+G_DEFINE_TYPE (GstTestAggregator, gst_test_aggregator, GST_TYPE_AGGREGATOR);
+
+static void
+gst_test_aggregator_class_init (GstTestAggregatorClass * klass)
+{
+ GstElementClass *gstelement_class = (GstElementClass *) klass;
+ GstAggregatorClass *base_aggregator_class = (GstAggregatorClass *) klass;
+
+ static GstStaticPadTemplate _src_template =
+ GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+ static GstStaticPadTemplate _sink_template =
+ GST_STATIC_PAD_TEMPLATE ("sink_%u", GST_PAD_SINK, GST_PAD_REQUEST,
+ GST_STATIC_CAPS_ANY);
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&_src_template));
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&_sink_template));
+
+ gst_element_class_set_static_metadata (gstelement_class, "Aggregator",
+ "Testing", "Combine N buffers", "Stefan Sauer <ensonic@users.sf.net>");
+
+ base_aggregator_class->aggregate =
+ GST_DEBUG_FUNCPTR (gst_test_aggregator_aggregate);
+}
+
+static void
+gst_test_aggregator_init (GstTestAggregator * self)
+{
+ GstAggregator *agg = GST_AGGREGATOR (self);
+ gst_segment_init (&agg->segment, GST_FORMAT_BYTES);
+ self->timestamp = 0;
+}
+
+static gboolean
+gst_test_aggregator_plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "testaggregator", GST_RANK_NONE,
+ GST_TYPE_TEST_AGGREGATOR);
+}
+
+static gboolean
+gst_test_aggregator_plugin_register (void)
+{
+ return gst_plugin_register_static (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "testaggregator",
+ "Combine buffers",
+ gst_test_aggregator_plugin_init,
+ VERSION, GST_LICENSE, PACKAGE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
+}
+
+typedef struct
+{
+ GstEvent *event;
+ GstBuffer *buffer;
+ GstElement *aggregator;
+ GstPad *sinkpad, *srcpad;
+ GstFlowReturn expected_result;
+
+ /* ------------------
+ * ----------- --------|-- |
+ * | srcpad | -- | sinkpad | aggregator |
+ * ----------- --------|-- |
+ * ------------------
+ * This is for 1 Chain, we can have several
+ */
+} ChainData;
+
+typedef struct
+{
+ GMainLoop *ml;
+ GstPad *srcpad, /* srcpad of the GstAggregator */
+ *sinkpad; /* fake sinkpad to which GstAggregator.srcpad is linked */
+ guint timeout_id;
+ GstElement *aggregator;
+
+ /* -----------------|
+ * | ---------- -----------
+ * | aggregator | srcpad | -- | sinkpad |
+ * | ---------- -----------
+ * -----------------|
+ */
+
+ gint flush_start_events, flush_stop_events;
+} TestData;
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static gpointer
+push_buffer (gpointer user_data)
+{
+ GstFlowReturn flow;
+ GstCaps *caps;
+ ChainData *chain_data = (ChainData *) user_data;
+ GstSegment segment;
+
+ gst_pad_push_event (chain_data->srcpad, gst_event_new_stream_start ("test"));
+
+ caps = gst_caps_new_empty_simple ("foo/x-bar");
+ gst_pad_push_event (chain_data->srcpad, gst_event_new_caps (caps));
+ gst_caps_unref (caps);
+
+ gst_segment_init (&segment, GST_FORMAT_TIME);
+ gst_pad_push_event (chain_data->srcpad, gst_event_new_segment (&segment));
+
+ GST_DEBUG ("Pushing buffer on pad: %s:%s",
+ GST_DEBUG_PAD_NAME (chain_data->sinkpad));
+ flow = gst_pad_push (chain_data->srcpad, chain_data->buffer);
+ fail_unless (flow == chain_data->expected_result,
+ "got flow %s instead of %s on %s:%s", gst_flow_get_name (flow),
+ gst_flow_get_name (chain_data->expected_result),
+ GST_DEBUG_PAD_NAME (chain_data->sinkpad));
+ chain_data->buffer = NULL;
+
+ return NULL;
+}
+
+static gpointer
+push_event (gpointer user_data)
+{
+ ChainData *chain_data = (ChainData *) user_data;
+
+ GST_ERROR_OBJECT (chain_data->srcpad, "Pushing event: %"
+ GST_PTR_FORMAT, chain_data->event);
+ fail_unless (gst_pad_push_event (chain_data->srcpad,
+ chain_data->event) == TRUE);
+
+ return NULL;
+}
+
+static gboolean
+_aggregate_timeout (GMainLoop * ml)
+{
+ g_main_loop_quit (ml);
+
+ fail_unless ("No buffer found on aggregator.srcpad -> TIMEOUT" == NULL);
+
+ return FALSE;
+}
+
+static gboolean
+_quit (GMainLoop * ml)
+{
+ GST_DEBUG ("QUITING ML");
+ g_main_loop_quit (ml);
+
+ return G_SOURCE_REMOVE;
+}
+
+static GstPadProbeReturn
+_aggregated_cb (GstPad * pad, GstPadProbeInfo * info, GMainLoop * ml)
+{
+ GST_DEBUG ("SHould quit ML");
+ g_idle_add ((GSourceFunc) _quit, ml);
+
+ return GST_PAD_PROBE_REMOVE;
+}
+
+static GstPadProbeReturn
+downstream_probe_cb (GstPad * pad, GstPadProbeInfo * info, TestData * test)
+{
+ GST_DEBUG ("PROBING ");
+ if (info->type & GST_PAD_PROBE_TYPE_EVENT_FLUSH) {
+ if (GST_EVENT_TYPE (GST_PAD_PROBE_INFO_EVENT (info)) ==
+ GST_EVENT_FLUSH_START) {
+
+ g_atomic_int_inc (&test->flush_start_events);
+ GST_DEBUG ("==========> FLUSH: %i", test->flush_start_events);
+ } else if (GST_EVENT_TYPE (GST_PAD_PROBE_INFO_EVENT (info)) ==
+ GST_EVENT_FLUSH_STOP)
+ g_atomic_int_inc (&test->flush_stop_events);
+ }
+
+ return GST_PAD_PROBE_DROP;
+}
+
+/*
+ * Not thread safe, will create a new ChainData which contains
+ * an activated src pad linked to a requested sink pad of @agg, and
+ * a newly allocated buffer ready to be pushed. Caller needs to
+ * clear with _chain_data_clear after.
+ */
+static void
+_chain_data_init (ChainData * data, GstElement * agg)
+{
+ static gint num_src_pads = 0;
+ gchar *pad_name = g_strdup_printf ("src%d", num_src_pads);
+
+ num_src_pads += 1;
+
+ data->srcpad = gst_pad_new_from_static_template (&srctemplate, pad_name);
+ g_free (pad_name);
+ gst_pad_set_active (data->srcpad, TRUE);
+ data->aggregator = agg;
+ data->buffer = gst_buffer_new ();
+ data->sinkpad = gst_element_get_request_pad (agg, "sink_%u");
+ fail_unless (GST_IS_PAD (data->sinkpad));
+ fail_unless (gst_pad_link (data->srcpad, data->sinkpad) == GST_PAD_LINK_OK);
+}
+
+static void
+_chain_data_clear (ChainData * data)
+{
+ if (data->buffer)
+ gst_buffer_unref (data->buffer);
+ if (data->srcpad)
+ gst_object_unref (data->srcpad);
+ if (data->sinkpad)
+ gst_object_unref (data->sinkpad);
+}
+
+static void
+_test_data_init (TestData * test, gboolean needs_flushing)
+{
+ test->aggregator = gst_element_factory_make ("testaggregator", NULL);
+ gst_element_set_state (test->aggregator, GST_STATE_PLAYING);
+ test->ml = g_main_loop_new (NULL, TRUE);
+ test->srcpad = GST_AGGREGATOR (test->aggregator)->srcpad;
+
+ GST_DEBUG ("Srcpad: %p", test->srcpad);
+
+ if (needs_flushing) {
+ static gint num_sink_pads = 0;
+ gchar *pad_name = g_strdup_printf ("sink%d", num_sink_pads);
+
+ num_sink_pads += 1;
+ test->sinkpad = gst_pad_new_from_static_template (&sinktemplate, pad_name);
+ g_free (pad_name);
+ fail_unless (gst_pad_link (test->srcpad, test->sinkpad) == GST_PAD_LINK_OK);
+ gst_pad_add_probe (test->srcpad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM |
+ GST_PAD_PROBE_TYPE_DATA_DOWNSTREAM |
+ GST_PAD_PROBE_TYPE_EVENT_FLUSH,
+ (GstPadProbeCallback) downstream_probe_cb, test, NULL);
+ } else {
+ gst_pad_add_probe (test->srcpad, GST_PAD_PROBE_TYPE_BUFFER,
+ (GstPadProbeCallback) _aggregated_cb, test->ml, NULL);
+ }
+
+
+ test->timeout_id =
+ g_timeout_add (1000, (GSourceFunc) _aggregate_timeout, test->ml);
+}
+
+static void
+_test_data_clear (TestData * test)
+{
+ gst_element_set_state (test->aggregator, GST_STATE_NULL);
+ gst_object_unref (test->aggregator);
+
+ g_main_loop_unref (test->ml);
+}
+
+GST_START_TEST (test_aggregate)
+{
+ GThread *thread1, *thread2;
+
+ ChainData data1 = { 0, };
+ ChainData data2 = { 0, };
+ TestData test = { 0, };
+
+ _test_data_init (&test, FALSE);
+ _chain_data_init (&data1, test.aggregator);
+ _chain_data_init (&data2, test.aggregator);
+
+ thread1 = g_thread_try_new ("gst-check", push_buffer, &data1, NULL);
+ thread2 = g_thread_try_new ("gst-check", push_buffer, &data2, NULL);
+
+ g_main_loop_run (test.ml);
+ g_source_remove (test.timeout_id);
+
+
+ /* these will return immediately as when the data is popped the threads are
+ * unlocked and will terminate */
+ g_thread_join (thread1);
+ g_thread_join (thread2);
+
+ _chain_data_clear (&data1);
+ _chain_data_clear (&data2);
+ _test_data_clear (&test);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_aggregate_eos)
+{
+ GThread *thread1, *thread2;
+
+ ChainData data1 = { 0, };
+ ChainData data2 = { 0, };
+ TestData test = { 0, };
+
+ _test_data_init (&test, FALSE);
+ _chain_data_init (&data1, test.aggregator);
+ _chain_data_init (&data2, test.aggregator);
+
+ data2.event = gst_event_new_eos ();
+
+ thread1 = g_thread_try_new ("gst-check", push_buffer, &data1, NULL);
+ thread2 = g_thread_try_new ("gst-check", push_event, &data2, NULL);
+
+ g_main_loop_run (test.ml);
+ g_source_remove (test.timeout_id);
+
+ /* these will return immediately as when the data is popped the threads are
+ * unlocked and will terminate */
+ g_thread_join (thread1);
+ g_thread_join (thread2);
+
+ _chain_data_clear (&data1);
+ _chain_data_clear (&data2);
+ _test_data_clear (&test);
+}
+
+GST_END_TEST;
+
+#define NUM_BUFFERS 3
+static void
+handoff (GstElement * fakesink, GstBuffer * buf, GstPad * pad, guint * count)
+{
+ *count = *count + 1;
+ GST_DEBUG ("HANDOFF: %i", *count);
+}
+
+/* Test a linear pipeline using aggregator */
+GST_START_TEST (test_linear_pipeline)
+{
+ GstBus *bus;
+ GstMessage *msg;
+ GstElement *pipeline, *src, *agg, *sink;
+
+ gint count = 0;
+
+ pipeline = gst_pipeline_new ("pipeline");
+ src = gst_check_setup_element ("fakesrc");
+ g_object_set (src, "num-buffers", NUM_BUFFERS, "sizetype", 2, "sizemax", 4,
+ NULL);
+ agg = gst_check_setup_element ("testaggregator");
+ sink = gst_check_setup_element ("fakesink");
+ g_object_set (sink, "signal-handoffs", TRUE, NULL);
+ g_signal_connect (sink, "handoff", (GCallback) handoff, &count);
+
+ fail_unless (gst_bin_add (GST_BIN (pipeline), src));
+ fail_unless (gst_bin_add (GST_BIN (pipeline), agg));
+ fail_unless (gst_bin_add (GST_BIN (pipeline), sink));
+ fail_unless (gst_element_link (src, agg));
+ fail_unless (gst_element_link (agg, sink));
+
+ bus = gst_element_get_bus (pipeline);
+ fail_if (bus == NULL);
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+ msg = gst_bus_poll (bus, GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1);
+ fail_if (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_EOS);
+ gst_message_unref (msg);
+
+ fail_unless_equals_int (count, NUM_BUFFERS);
+
+ gst_element_set_state (pipeline, GST_STATE_NULL);
+ gst_object_unref (bus);
+ gst_object_unref (pipeline);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_two_src_pipeline)
+{
+ GstBus *bus;
+ GstMessage *msg;
+ GstElement *pipeline, *src, *src1, *agg, *sink;
+
+ gint count = 0;
+
+ pipeline = gst_pipeline_new ("pipeline");
+ src = gst_element_factory_make ("fakesrc", NULL);
+ g_object_set (src, "num-buffers", NUM_BUFFERS, "sizetype", 2, "sizemax", 4,
+ NULL);
+
+ src1 = gst_element_factory_make ("fakesrc", NULL);
+ g_object_set (src1, "num-buffers", NUM_BUFFERS + 1, "sizetype", 2, "sizemax",
+ 4, NULL);
+
+ agg = gst_check_setup_element ("testaggregator");
+ sink = gst_check_setup_element ("fakesink");
+ g_object_set (sink, "signal-handoffs", TRUE, NULL);
+ g_signal_connect (sink, "handoff", (GCallback) handoff, &count);
+
+ fail_unless (gst_bin_add (GST_BIN (pipeline), src));
+ fail_unless (gst_bin_add (GST_BIN (pipeline), src1));
+ fail_unless (gst_bin_add (GST_BIN (pipeline), agg));
+ fail_unless (gst_bin_add (GST_BIN (pipeline), sink));
+ fail_unless (gst_element_link (src, agg));
+ fail_unless (gst_element_link (src1, agg));
+ fail_unless (gst_element_link (agg, sink));
+
+ bus = gst_element_get_bus (pipeline);
+ fail_if (bus == NULL);
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+ msg = gst_bus_poll (bus, GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1);
+ fail_if (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_EOS);
+ gst_message_unref (msg);
+
+ fail_unless_equals_int (count, NUM_BUFFERS + 1);
+
+ gst_element_set_state (pipeline, GST_STATE_NULL);
+ gst_object_unref (bus);
+ gst_object_unref (pipeline);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_flushing_seek)
+{
+ GstEvent *event;
+ GThread *thread1, *thread2;
+
+ ChainData data1 = { 0, };
+ ChainData data2 = { 0, };
+ TestData test = { 0, };
+
+ _test_data_init (&test, TRUE);
+
+ /* Queue a buffer in agg:sink_1. Then do a flushing seek and check that the
+ * new flushing seek logic is triggered. On the first FLUSH_START call the
+ * buffers queued in collectpads should get flushed. Only one FLUSH_START and
+ * one FLUSH_STOP should be forwarded downstream.
+ */
+ _chain_data_init (&data1, test.aggregator);
+ _chain_data_init (&data2, test.aggregator);
+ GST_BUFFER_TIMESTAMP (data2.buffer) = 0;
+
+ gst_segment_init (&GST_AGGREGATOR (test.aggregator)->segment,
+ GST_FORMAT_TIME);
+ /* now do a successful flushing seek */
+ event = gst_event_new_seek (1, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
+ GST_SEEK_TYPE_SET, 0, GST_SEEK_TYPE_SET, 10 * GST_SECOND);
+ fail_unless (gst_pad_send_event (test.srcpad, event));
+
+ /* flushing starts once one of the upstream elements sends the first
+ * FLUSH_START */
+ fail_unless_equals_int (test.flush_start_events, 0);
+ fail_unless_equals_int (test.flush_stop_events, 0);
+
+ /* flush ogg:sink_0. This flushs collectpads, calls ::flush() and sends
+ * FLUSH_START downstream */
+ GST_DEBUG ("Flushing: %s:%s", GST_DEBUG_PAD_NAME (data2.sinkpad));
+ fail_unless (gst_pad_push_event (data2.srcpad, gst_event_new_flush_start ()));
+
+ /* expect this buffer to be flushed */
+ data2.expected_result = GST_FLOW_FLUSHING;
+ thread2 = g_thread_try_new ("gst-check", push_buffer, &data2, NULL);
+
+ fail_unless (gst_pad_push_event (data1.srcpad, gst_event_new_flush_start ()));
+ fail_unless_equals_int (test.flush_start_events, 1);
+ fail_unless_equals_int (test.flush_stop_events, 0);
+
+ /* the first FLUSH_STOP is not forwarded downstream */
+ fail_unless (gst_pad_push_event (data1.srcpad,
+ gst_event_new_flush_stop (TRUE)));
+ fail_unless_equals_int (test.flush_start_events, 1);
+ fail_unless_equals_int (test.flush_stop_events, 0);
+
+ /* at this point even the other pad agg:sink_1 should be flushing so thread2
+ * should have stopped */
+ g_thread_join (thread2);
+
+ /* push a buffer on agg:sink_0 to trigger one collect after flushing to verify
+ * that flushing completes once all the pads have been flushed */
+ thread1 = g_thread_try_new ("gst-check", push_buffer, &data1, NULL);
+
+ /* flush agg:sink_1 as well. This completes the flushing seek so a FLUSH_STOP is
+ * sent downstream */
+ gst_pad_push_event (data2.srcpad, gst_event_new_flush_stop (TRUE));
+
+ /* and the last FLUSH_STOP is forwarded downstream */
+ fail_unless_equals_int (test.flush_start_events, 1);
+
+ /* Check collected */
+ gst_pad_add_probe (test.srcpad, GST_PAD_PROBE_TYPE_BUFFER,
+ (GstPadProbeCallback) _aggregated_cb, test.ml, NULL);
+
+ data2.event = gst_event_new_eos ();
+ thread2 = g_thread_try_new ("gst-check", push_event, &data2, NULL);
+
+ g_main_loop_run (test.ml);
+ g_source_remove (test.timeout_id);
+
+ fail_unless_equals_int (test.flush_stop_events, 1);
+
+ /* these will return immediately as at this point the threads have been
+ * unlocked and are finished */
+ g_thread_join (thread1);
+ g_thread_join (thread2);
+
+ _test_data_clear (&test);
+
+}
+
+GST_END_TEST;
+
+static void
+infinite_seek (guint num_srcs, guint num_seeks)
+{
+ GstBus *bus;
+ GstMessage *message;
+ GstElement *pipeline, *src, *agg, *sink;
+
+ gint count = 0, i;
+ gboolean seek_res, carry_on = TRUE;
+
+ gst_init (NULL, NULL);
+
+ pipeline = gst_pipeline_new ("pipeline");
+
+ agg = gst_check_setup_element ("testaggregator");
+ sink = gst_check_setup_element ("fakesink");
+
+ fail_unless (gst_bin_add (GST_BIN (pipeline), agg));
+ fail_unless (gst_bin_add (GST_BIN (pipeline), sink));
+ fail_unless (gst_element_link (agg, sink));
+
+ for (i = 0; i < num_srcs; i++) {
+ src = gst_element_factory_make ("fakesrc", NULL);
+ g_object_set (src, "sizetype", 2, "sizemax", 4, NULL);
+ fail_unless (gst_bin_add (GST_BIN (pipeline), src));
+ fail_unless (gst_element_link (src, agg));
+ }
+
+ bus = gst_element_get_bus (pipeline);
+ fail_if (bus == NULL);
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+ while (count < num_seeks && carry_on) {
+ message = gst_bus_poll (bus, GST_MESSAGE_ANY, GST_SECOND / 10);
+ if (message) {
+ switch (GST_MESSAGE_TYPE (message)) {
+ case GST_MESSAGE_EOS:
+ {
+ /* we should check if we really finished here */
+ GST_WARNING ("Got an EOS");
+ carry_on = FALSE;
+ break;
+ }
+ case GST_MESSAGE_STATE_CHANGED:
+ {
+ GstState new;
+
+ if (GST_MESSAGE_SRC (message) == GST_OBJECT (pipeline)) {
+ gst_message_parse_state_changed (message, NULL, &new, NULL);
+
+ if (new != GST_STATE_PLAYING)
+ break;
+
+ GST_INFO ("Seeking (num: %i)", count);
+ seek_res =
+ gst_element_seek_simple (sink, GST_FORMAT_BYTES,
+ GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, 0);
+ GST_INFO ("seek result is : %d", seek_res);
+ fail_unless (seek_res != 0);
+ count++;
+ }
+
+ break;
+ }
+ case GST_MESSAGE_ERROR:
+ GST_ERROR ("Error on the bus: %" GST_PTR_FORMAT, message);
+ carry_on = FALSE;
+ fail_error_message (message);
+ break;
+ default:
+ break;
+ }
+ gst_message_unref (message);
+ }
+ }
+
+ gst_element_set_state (pipeline, GST_STATE_NULL);
+ gst_object_unref (bus);
+ gst_object_unref (pipeline);
+}
+
+GST_START_TEST (test_infinite_seek)
+{
+ infinite_seek (2, 500);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_infinite_seek_50_src)
+{
+ infinite_seek (50, 100);
+}
+
+GST_END_TEST;
+
+typedef struct
+{
+ GstElement *agg, *src, *pipeline;
+ GCond *cond;
+ GMutex *lock;
+} RemoveElementData;
+
+static GstPadProbeReturn
+pad_probe_cb (GstPad * pad, GstPadProbeInfo * info, RemoveElementData * data)
+{
+ GstPad *peer;
+
+ GST_INFO_OBJECT (pad, "Removing pad");
+
+ peer = gst_pad_get_peer (pad);
+ gst_pad_unlink (pad, peer);
+ gst_element_release_request_pad (data->agg, peer);
+ fail_unless (gst_bin_remove (GST_BIN (data->pipeline), data->src));
+
+ g_mutex_lock (data->lock);
+ g_cond_broadcast (data->cond);
+ g_mutex_unlock (data->lock);
+
+ return GST_PAD_PROBE_OK;
+}
+
+GST_START_TEST (test_add_remove)
+{
+ /* Used to notify that we removed the pad from */
+ GCond cond;
+ GMutex lock;
+
+ GstBus *bus;
+ GstState state;
+ GstMessage *message;
+ gboolean carry_on = TRUE;
+ guint num_iterations = 100;
+
+ GstPad *pad;
+ GstElement *pipeline, *src, *src1 = NULL, *agg, *sink;
+
+ gint count = 0;
+
+ gst_init (NULL, NULL);
+ g_mutex_init (&lock);
+ g_cond_init (&cond);
+
+ pipeline = gst_pipeline_new ("pipeline");
+
+ agg = gst_check_setup_element ("testaggregator");
+ sink = gst_check_setup_element ("fakesink");
+
+ fail_unless (gst_bin_add (GST_BIN (pipeline), agg));
+ fail_unless (gst_bin_add (GST_BIN (pipeline), sink));
+ fail_unless (gst_element_link (agg, sink));
+
+ bus = gst_element_get_bus (pipeline);
+ while (count < num_iterations) {
+
+ src = gst_element_factory_make ("fakesrc", NULL);
+ g_object_set (src, "num-buffers", 100000, "sizetype", 2, "sizemax", 4,
+ NULL);
+ gst_element_set_locked_state (src, TRUE);
+ fail_unless (gst_bin_add (GST_BIN (pipeline), src));
+ fail_unless (gst_element_link (src, agg));
+ gst_element_set_locked_state (src, FALSE);
+ fail_unless (gst_element_sync_state_with_parent (src));
+
+ if (count == 0)
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+ /* Now make sure the seek happend */
+ carry_on = TRUE;
+ do {
+ message = gst_bus_timed_pop (bus, -1);
+ switch (GST_MESSAGE_TYPE (message)) {
+ case GST_MESSAGE_EOS:
+ {
+ /* we should check if we really finished here */
+ GST_WARNING ("Got an EOS");
+ carry_on = FALSE;
+ break;
+ }
+ case GST_MESSAGE_STATE_CHANGED:
+ {
+ if (GST_MESSAGE_SRC (message) == GST_OBJECT (pipeline)) {
+ gst_message_parse_state_changed (message, NULL, &state, NULL);
+
+ if (state == GST_STATE_PLAYING) {
+ RemoveElementData data;
+
+ carry_on = FALSE;
+ if (count == 0) {
+ GST_DEBUG ("First run, not removing any element yet");
+
+ break;
+ }
+
+ data.src = gst_object_ref (src1);
+ data.agg = agg;
+ data.lock = &lock;
+ data.cond = &cond;
+ data.pipeline = pipeline;
+ pad = gst_element_get_static_pad (data.src, "src");
+
+ g_mutex_lock (&lock);
+ gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM,
+ (GstPadProbeCallback) pad_probe_cb, &data, NULL);
+ GST_INFO ("Waiting for %" GST_PTR_FORMAT " %s", pad,
+ gst_element_state_get_name (GST_STATE (data.src)));
+ g_cond_wait (&cond, &lock);
+ g_mutex_unlock (&lock);
+
+ /* We can not set state from the streaming thread so we
+ * need to make sure that the source has been removed
+ * before setting its state to NULL */
+ gst_element_set_state (data.src, GST_STATE_NULL);
+
+ gst_object_unref (data.src);
+ }
+ }
+
+ break;
+ }
+ case GST_MESSAGE_ERROR:
+ {
+ GST_ERROR ("Error on the bus: %" GST_PTR_FORMAT, message);
+ carry_on = FALSE;
+ fail_error_message (message);
+ break;
+ }
+ default:
+ break;
+ }
+
+ gst_message_unref (message);
+ } while (carry_on);
+
+ GST_INFO ("Seeking");
+ fail_unless (gst_element_seek_simple (pipeline, GST_FORMAT_BYTES,
+ GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, 0));
+
+ count++;
+ src1 = src;
+ }
+ gst_element_set_state (pipeline, GST_STATE_NULL);
+ gst_object_unref (bus);
+ gst_object_unref (pipeline);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_change_state_intensive)
+{
+ GstBus *bus;
+ GstMessage *message;
+ GstElement *pipeline, *src, *agg, *sink;
+
+ gint i, state_i = 0, num_srcs = 3;
+ gboolean carry_on = TRUE, ready = FALSE;
+ GstStateChangeReturn state_return;
+ GstState wanted_state, wanted_states[] = {
+ GST_STATE_PLAYING, GST_STATE_NULL, GST_STATE_PAUSED, GST_STATE_READY,
+ GST_STATE_PLAYING, GST_STATE_NULL, GST_STATE_PAUSED, GST_STATE_READY,
+ GST_STATE_PLAYING, GST_STATE_NULL, GST_STATE_PAUSED, GST_STATE_READY,
+ GST_STATE_PAUSED, GST_STATE_READY, GST_STATE_PAUSED, GST_STATE_READY,
+ GST_STATE_PAUSED, GST_STATE_READY, GST_STATE_PAUSED, GST_STATE_NULL,
+ GST_STATE_PAUSED, GST_STATE_NULL, GST_STATE_PAUSED, GST_STATE_NULL,
+ GST_STATE_PAUSED, GST_STATE_NULL, GST_STATE_PAUSED, GST_STATE_NULL,
+ GST_STATE_PAUSED, GST_STATE_NULL, GST_STATE_PLAYING, GST_STATE_NULL,
+ GST_STATE_PLAYING, GST_STATE_NULL, GST_STATE_PLAYING, GST_STATE_NULL,
+ GST_STATE_PLAYING, GST_STATE_NULL, GST_STATE_PLAYING, GST_STATE_NULL,
+ GST_STATE_PLAYING, GST_STATE_NULL, GST_STATE_PLAYING, GST_STATE_NULL,
+ };
+
+ gst_init (NULL, NULL);
+
+ pipeline = gst_pipeline_new ("pipeline");
+
+ agg = gst_check_setup_element ("testaggregator");
+ sink = gst_check_setup_element ("fakesink");
+
+ fail_unless (gst_bin_add (GST_BIN (pipeline), agg));
+ fail_unless (gst_bin_add (GST_BIN (pipeline), sink));
+ fail_unless (gst_element_link (agg, sink));
+
+ for (i = 0; i < num_srcs; i++) {
+ src = gst_element_factory_make ("fakesrc", NULL);
+ g_object_set (src, "sizetype", 2, "sizemax", 4, NULL);
+ fail_unless (gst_bin_add (GST_BIN (pipeline), src));
+ fail_unless (gst_element_link (src, agg));
+ }
+
+ bus = gst_element_get_bus (pipeline);
+ fail_if (bus == NULL);
+
+ wanted_state = wanted_states[state_i++];
+ state_return = gst_element_set_state (pipeline, wanted_state);
+
+ while (state_i < G_N_ELEMENTS (wanted_states) && carry_on) {
+ if (state_return == GST_STATE_CHANGE_SUCCESS && ready) {
+ wanted_state = wanted_states[state_i++];
+ fail_unless (gst_element_set_state (pipeline, wanted_state),
+ GST_STATE_CHANGE_SUCCESS);
+ GST_INFO ("Wanted state: %s", gst_element_state_get_name (wanted_state));
+ }
+
+ message = gst_bus_poll (bus, GST_MESSAGE_ANY, GST_SECOND / 10);
+ if (message) {
+ switch (GST_MESSAGE_TYPE (message)) {
+ case GST_MESSAGE_EOS:
+ {
+ /* we should check if we really finished here */
+ GST_WARNING ("Got an EOS");
+ carry_on = FALSE;
+ break;
+ }
+ case GST_MESSAGE_STATE_CHANGED:
+ {
+ GstState new;
+
+ if (GST_MESSAGE_SRC (message) == GST_OBJECT (pipeline)) {
+ gst_message_parse_state_changed (message, NULL, &new, NULL);
+
+ if (new != wanted_state) {
+ ready = FALSE;
+ break;
+ }
+
+ GST_DEBUG ("State %s reached",
+ gst_element_state_get_name (wanted_state));
+ wanted_state = wanted_states[state_i++];
+ GST_DEBUG ("Wanted state: %s",
+ gst_element_state_get_name (wanted_state));
+ state_return = gst_element_set_state (pipeline, wanted_state);
+ fail_unless (state_return == GST_STATE_CHANGE_SUCCESS ||
+ state_return == GST_STATE_CHANGE_ASYNC);
+ ready = TRUE;
+ }
+
+ break;
+ }
+ case GST_MESSAGE_ERROR:
+ GST_ERROR ("Error on the bus: %" GST_PTR_FORMAT, message);
+ carry_on = FALSE;
+ break;
+ default:
+ break;
+ }
+ gst_message_unref (message);
+ }
+ }
+
+ gst_element_set_state (pipeline, GST_STATE_NULL);
+ gst_object_unref (bus);
+ gst_object_unref (pipeline);
+}
+
+GST_END_TEST;
+
+static Suite *
+gst_aggregator_suite (void)
+{
+ Suite *suite;
+ TCase *general;
+
+ gst_test_aggregator_plugin_register ();
+
+ suite = suite_create ("GstAggregator");
+
+ general = tcase_create ("general");
+ suite_add_tcase (suite, general);
+ tcase_add_test (general, test_aggregate);
+ tcase_add_test (general, test_aggregate_eos);
+ tcase_add_test (general, test_flushing_seek);
+ tcase_add_test (general, test_infinite_seek);
+ tcase_add_test (general, test_infinite_seek_50_src);
+ tcase_add_test (general, test_linear_pipeline);
+ tcase_add_test (general, test_two_src_pipeline);
+ tcase_add_test (general, test_add_remove);
+ tcase_add_test (general, test_change_state_intensive);
+
+ return suite;
+}
+
+GST_CHECK_MAIN (gst_aggregator);
projects / platform / upstream / gstreamer.git / commitdiff