--- /dev/null
+/* GStreamer
+ * Copyright (C) 2006 Edward Hervey <edward@fluendo.com>
+ *
+ * gstdataqueue.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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:gstdataqueue
+ * @short_description: Threadsafe queueing object
+ *
+ * #GstDataQueue is an object that handles threadsafe queueing of object. It
+ * also provides size-related functionnality. This object should be used for
+ * any #GstElement that wishes to provide some sort of queueing functionnality.
+ */
+
+#include <gst/gst.h>
+#include "gstdataqueue.h"
+
+GST_DEBUG_CATEGORY_STATIC (data_queue_debug);
+#define GST_CAT_DEFAULT (data_queue_debug)
+GST_DEBUG_CATEGORY_STATIC (data_queue_dataflow);
+
+
+/* Queue signals and args */
+enum
+{
+ SIGNAL_EMPTY,
+ SIGNAL_FULL,
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+ ARG_CUR_LEVEL_VISIBLE,
+ ARG_CUR_LEVEL_BYTES,
+ ARG_CUR_LEVEL_TIME,
+ /* FILL ME */
+};
+
+#define GST_DATA_QUEUE_MUTEX_LOCK(q) G_STMT_START { \
+ GST_CAT_LOG (data_queue_dataflow, \
+ "locking qlock from thread %p", \
+ g_thread_self ()); \
+ g_mutex_lock (q->qlock); \
+ GST_CAT_LOG (data_queue_dataflow, \
+ "locked qlock from thread %p", \
+ g_thread_self ()); \
+} G_STMT_END
+
+#define GST_DATA_QUEUE_MUTEX_LOCK_CHECK(q, label) G_STMT_START { \
+ GST_DATA_QUEUE_MUTEX_LOCK (q); \
+ if (q->flushing) \
+ goto label; \
+ } G_STMT_END
+
+#define GST_DATA_QUEUE_MUTEX_UNLOCK(q) G_STMT_START { \
+ GST_CAT_LOG (data_queue_dataflow, \
+ "unlocking qlock from thread %p", \
+ g_thread_self ()); \
+ g_mutex_unlock (q->qlock); \
+} G_STMT_END
+
+#define STATUS(q, msg) \
+ GST_CAT_LOG (data_queue_dataflow, \
+ "queue:%p " msg ": %u visible items, %u " \
+ "bytes, %"G_GUINT64_FORMAT \
+ " ns, %u elements", \
+ queue, \
+ q->cur_level.visible, \
+ q->cur_level.bytes, \
+ q->cur_level.time, \
+ q->queue->length)
+
+static void gst_data_queue_base_init (GstDataQueueClass * klass);
+static void gst_data_queue_class_init (GstDataQueueClass * klass);
+static void gst_data_queue_init (GstDataQueue * queue);
+static void gst_data_queue_finalize (GObject * object);
+
+static void gst_data_queue_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_data_queue_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+static GObjectClass *parent_class = NULL;
+static guint gst_data_queue_signals[LAST_SIGNAL] = { 0 };
+
+GType
+gst_data_queue_get_type (void)
+{
+ static GType queue_type = 0;
+
+ if (!queue_type) {
+ static const GTypeInfo queue_info = {
+ sizeof (GstDataQueueClass),
+ (GBaseInitFunc) gst_data_queue_base_init,
+ NULL,
+ (GClassInitFunc) gst_data_queue_class_init,
+ NULL,
+ NULL,
+ sizeof (GstDataQueue),
+ 0,
+ (GInstanceInitFunc) gst_data_queue_init,
+ NULL
+ };
+
+ queue_type = g_type_register_static (G_TYPE_OBJECT,
+ "GstDataQueue", &queue_info, 0);
+ GST_DEBUG_CATEGORY_INIT (data_queue_debug, "dataqueue", 0,
+ "data queue object");
+ GST_DEBUG_CATEGORY_INIT (data_queue_dataflow, "data_queue_dataflow", 0,
+ "dataflow inside the data queue object");
+ }
+
+ return queue_type;
+}
+
+static void
+gst_data_queue_base_init (GstDataQueueClass * klass)
+{
+ /* Do we need anything here ?? */
+ return;
+}
+
+static void
+gst_data_queue_class_init (GstDataQueueClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_data_queue_set_property);
+ gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_data_queue_get_property);
+
+ /* signals */
+ /**
+ * GstDataQueue::empty:
+ * @queue: the queue instance
+ *
+ * Reports that the queue became empty (empty).
+ * A queue is empty if the total amount of visible items inside it (num-visible, time,
+ * size) is lower than the boundary values which can be set through the GObject
+ * properties.
+ */
+ gst_data_queue_signals[SIGNAL_EMPTY] =
+ g_signal_new ("empty", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GstDataQueueClass, empty), NULL, NULL,
+ g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+ /**
+ * GstDataQueue::full:
+ * @queue: the queue instance
+ *
+ * Reports that the queue became full (full).
+ * A queue is full if the total amount of data inside it (num-visible, time,
+ * size) is higher than the boundary values which can be set through the GObject
+ * properties.
+ */
+ gst_data_queue_signals[SIGNAL_FULL] =
+ g_signal_new ("full", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GstDataQueueClass, full), NULL, NULL,
+ g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+ /* properties */
+ g_object_class_install_property (gobject_class, ARG_CUR_LEVEL_BYTES,
+ g_param_spec_uint ("current-level-bytes", "Current level (kB)",
+ "Current amount of data in the queue (bytes)",
+ 0, G_MAXUINT, 0, G_PARAM_READABLE));
+ g_object_class_install_property (gobject_class, ARG_CUR_LEVEL_VISIBLE,
+ g_param_spec_uint ("current-level-visible",
+ "Current level (visible items)",
+ "Current number of visible items in the queue", 0, G_MAXUINT, 0,
+ G_PARAM_READABLE));
+ g_object_class_install_property (gobject_class, ARG_CUR_LEVEL_TIME,
+ g_param_spec_uint64 ("current-level-time", "Current level (ns)",
+ "Current amount of data in the queue (in ns)", 0, G_MAXUINT64, 0,
+ G_PARAM_READABLE));
+
+ /* set several parent class virtual functions */
+ gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_data_queue_finalize);
+
+}
+
+static void
+gst_data_queue_init (GstDataQueue * queue)
+{
+ queue->cur_level.visible = 0; /* no content */
+ queue->cur_level.bytes = 0; /* no content */
+ queue->cur_level.time = 0; /* no content */
+
+ queue->checkfull = NULL;
+
+ queue->qlock = g_mutex_new ();
+ queue->item_add = g_cond_new ();
+ queue->item_del = g_cond_new ();
+ queue->queue = g_queue_new ();
+
+ GST_DEBUG ("initialized queue's not_empty & not_full conditions");
+}
+
+/**
+ * gst_data_queue_new:
+ * @checkfull: the callback used to tell if the element considers the queue full
+ * or not.
+ * @checkdata: a #gpointer that will be given in the @checkfull callback.
+ *
+ * Returns: a new #GstDataQueue.
+ */
+
+GstDataQueue *
+gst_data_queue_new (GstDataQueueCheckFullFunction checkfull, gpointer checkdata)
+{
+ GstDataQueue *ret;
+
+ g_return_val_if_fail (checkfull != NULL, NULL);
+
+ ret = g_object_new (GST_TYPE_DATA_QUEUE, NULL);
+ ret->checkfull = checkfull;
+ ret->checkdata = checkdata;
+
+ return ret;
+}
+
+static void
+gst_data_queue_cleanup (GstDataQueue * queue)
+{
+ while (!g_queue_is_empty (queue->queue)) {
+ GstDataQueueItem *item = g_queue_pop_head (queue->queue);
+
+ /* Just call the destroy notify on the item */
+ item->destroy (item);
+ }
+ queue->cur_level.visible = 0;
+ queue->cur_level.bytes = 0;
+ queue->cur_level.time = 0;
+
+}
+
+/* called only once, as opposed to dispose */
+static void
+gst_data_queue_finalize (GObject * object)
+{
+ GstDataQueue *queue = GST_DATA_QUEUE (object);
+
+ GST_DEBUG ("finalizing queue");
+
+ gst_data_queue_cleanup (queue);
+ g_queue_free (queue->queue);
+
+ GST_DEBUG ("free mutex");
+ g_mutex_free (queue->qlock);
+ GST_DEBUG ("done free mutex");
+
+ g_cond_free (queue->item_add);
+ g_cond_free (queue->item_del);
+
+ if (G_OBJECT_CLASS (parent_class)->finalize)
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_data_queue_locked_flush (GstDataQueue * queue)
+{
+ STATUS (queue, "before flushing");
+ gst_data_queue_cleanup (queue);
+ STATUS (queue, "after flushing");
+ /* we deleted something... */
+ g_cond_signal (queue->item_del);
+}
+
+static gboolean
+gst_data_queue_locked_is_empty (GstDataQueue * queue)
+{
+ return (queue->queue->length == 0);
+}
+
+static gboolean
+gst_data_queue_locked_is_full (GstDataQueue * queue)
+{
+ return queue->checkfull (queue, queue->cur_level.visible,
+ queue->cur_level.bytes, queue->cur_level.time, queue->checkdata);
+}
+
+/**
+ * gst_data_queue_flush:
+ * @queue: a #GstDataQueue.
+ *
+ * Flushes all the contents of the @queue. Any call to #gst_data_queue_pull and
+ * #gst_data_queue_pop will be released.
+ * MT safe.
+ */
+
+void
+gst_data_queue_flush (GstDataQueue * queue)
+{
+ GST_DEBUG ("queue:%p", queue);
+ GST_DATA_QUEUE_MUTEX_LOCK (queue);
+ gst_data_queue_locked_flush (queue);
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+}
+
+/**
+ * gst_data_queue_is_empty:
+ * @queue: a #GstDataQueue.
+ *
+ * Queries if there are any items in the @queue.
+ * MT safe.
+ *
+ * Returns: #TRUE if @queue is empty.
+ */
+
+gboolean
+gst_data_queue_is_empty (GstDataQueue * queue)
+{
+ gboolean res;
+
+ GST_DATA_QUEUE_MUTEX_LOCK (queue);
+ res = gst_data_queue_locked_is_empty (queue);
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+
+ return res;
+}
+
+/**
+ * gst_data_queue_is_full:
+ * @queue: a #GstDataQueue.
+ *
+ * Queries if @queue is full. This check will be done using the
+ * #GstDataQueueCheckFullCallback registered with @queue.
+ * MT safe.
+ *
+ * Returns: #TRUE if @queue is full.
+ */
+
+gboolean
+gst_data_queue_is_full (GstDataQueue * queue)
+{
+ gboolean res;
+
+ GST_DATA_QUEUE_MUTEX_LOCK (queue);
+ res = gst_data_queue_locked_is_full (queue);
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+
+ return res;
+}
+
+/**
+ * gst_data_queue_set_flushing:
+ * @queue: a #GstDataQueue.
+ * @flushing: a #gboolean stating if the queue will be flushing or not.
+ *
+ * Sets the queue to flushing state if @flushing is #TRUE. If set to flushing
+ * state, any incoming data on the @queue will be discarded. Any call currently
+ * blocking on #gst_data_queue_push or #gst_data_queue_pop will return straight
+ * away with a return value of #FALSE. While the @queue is in flushing state,
+ * all calls to those two functions will return #FALSE.
+ * MT Safe.
+ */
+
+void
+gst_data_queue_set_flushing (GstDataQueue * queue, gboolean flushing)
+{
+
+ GST_DEBUG ("queue:%p , flushing:%d", queue, flushing);
+ GST_DATA_QUEUE_MUTEX_LOCK (queue);
+ queue->flushing = flushing;
+ if (flushing) {
+ /* release push/pop functions */
+ g_cond_signal (queue->item_add);
+ g_cond_signal (queue->item_del);
+ }
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+}
+
+/**
+ * gst_data_queue_push:
+ * @queue: a #GstDataQueue.
+ * @item: a #GstDataQueueItem.
+ *
+ * Pushes a #GstDataQueueItem (or a structure that begins with the same fields)
+ * on the @queue. If the @queue is full, the call will block until space is
+ * available, OR the @queue is set to flushing state.
+ * MT safe.
+ *
+ * Returns: #TRUE if the @item was successfully pushed on the @queue.
+ */
+gboolean
+gst_data_queue_push (GstDataQueue * queue, GstDataQueueItem * item)
+{
+ gboolean res = FALSE;
+
+ GST_DATA_QUEUE_MUTEX_LOCK_CHECK (queue, done);
+
+ STATUS (queue, "before pushing");
+
+ /* We ALWAYS need to check for queue fillness */
+ while (gst_data_queue_locked_is_full (queue)) {
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+ g_signal_emit (G_OBJECT (queue), gst_data_queue_signals[SIGNAL_FULL], 0);
+ GST_DATA_QUEUE_MUTEX_LOCK_CHECK (queue, done);
+
+ /* signal might have removed some items */
+ while (gst_data_queue_locked_is_full (queue)) {
+ g_cond_wait (queue->item_del, queue->qlock);
+ if (queue->flushing)
+ goto done;
+ }
+ }
+
+ g_queue_push_tail (queue->queue, item);
+ res = TRUE;
+
+ if (item->visible)
+ queue->cur_level.visible++;
+ queue->cur_level.bytes += item->size;
+ queue->cur_level.time += item->duration;
+
+ STATUS (queue, "after pushing");
+
+ g_cond_signal (queue->item_add);
+
+done:
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+
+ GST_DEBUG ("queue:%p, result:%d", queue, res);
+
+ return res;
+}
+
+/**
+ * gst_data_queue_pop:
+ * @queue: a #GstDataQueue.
+ * @item: pointer to store the returned #GstDataQueueItem.
+ *
+ * Retrieves the first @item available on the @queue. If the queue is currently
+ * empty, the call will block until at least one item is available, OR the
+ * @queue is set to the flushing state.
+ * MT safe.
+ *
+ * Returns: #TRUE if an @item was successfully retrieved from the @queue.
+ */
+
+gboolean
+gst_data_queue_pop (GstDataQueue * queue, GstDataQueueItem ** item)
+{
+ gboolean res = FALSE;
+
+ GST_DEBUG ("queue:%p", queue);
+
+ g_return_val_if_fail (item != NULL, FALSE);
+
+ GST_DATA_QUEUE_MUTEX_LOCK_CHECK (queue, done);
+
+ STATUS (queue, "before popping");
+
+ while (gst_data_queue_locked_is_empty (queue)) {
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+ g_signal_emit (G_OBJECT (queue), gst_data_queue_signals[SIGNAL_EMPTY], 0);
+ GST_DATA_QUEUE_MUTEX_LOCK_CHECK (queue, done);
+
+ while (gst_data_queue_locked_is_empty (queue)) {
+ g_cond_wait (queue->item_add, queue->qlock);
+ if (queue->flushing)
+ goto done;
+ }
+ }
+
+ /* Get the item from the GQueue */
+ *item = g_queue_pop_head (queue->queue);
+ res = TRUE;
+
+ /* update current level counter */
+ if ((*item)->visible)
+ queue->cur_level.visible--;
+ queue->cur_level.bytes -= (*item)->size;
+ queue->cur_level.time -= (*item)->duration;
+
+ g_cond_signal (queue->item_del);
+
+done:
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+
+ GST_DEBUG ("queue:%p , res:%d", queue, res);
+
+ return res;
+}
+
+/**
+ * gst_data_queue_drop_head:
+ * @queue: The #GstDataQueue to drop an item from.
+ * @type: The #GType of the item to drop.
+ *
+ * Pop and unref the head-most #GstMiniObject with the given #GType.
+ *
+ * Returns: TRUE if an element was removed.
+ */
+
+gboolean
+gst_data_queue_drop_head (GstDataQueue * queue, GType type)
+{
+ gboolean res = FALSE;
+ GList *item;
+ GstDataQueueItem *leak = NULL;
+
+ GST_DEBUG ("queue:%p", queue);
+
+ GST_DATA_QUEUE_MUTEX_LOCK (queue);
+ for (item = g_queue_peek_head_link (queue->queue); item; item = item->next) {
+ GstDataQueueItem *tmp = (GstDataQueueItem *) item->data;
+
+ if (G_TYPE_CHECK_INSTANCE_TYPE (tmp->object, type)) {
+ leak = tmp;
+ break;
+ }
+ }
+
+ if (!leak)
+ goto done;
+
+ g_queue_delete_link (queue->queue, item);
+
+ if (leak->visible)
+ queue->cur_level.visible--;
+ queue->cur_level.bytes -= leak->size;
+ queue->cur_level.time -= leak->duration;
+
+ leak->destroy (leak);
+
+ res = TRUE;
+
+done:
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+
+ GST_DEBUG ("queue:%p , res:%d", queue, res);
+
+ return res;
+}
+
+static void
+gst_data_queue_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_data_queue_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstDataQueue *queue = GST_DATA_QUEUE (object);
+
+ GST_DATA_QUEUE_MUTEX_LOCK (queue);
+
+ switch (prop_id) {
+ case ARG_CUR_LEVEL_BYTES:
+ g_value_set_uint (value, queue->cur_level.bytes);
+ break;
+ case ARG_CUR_LEVEL_VISIBLE:
+ g_value_set_uint (value, queue->cur_level.visible);
+ break;
+ case ARG_CUR_LEVEL_TIME:
+ g_value_set_uint64 (value, queue->cur_level.time);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+
+ GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2006 Edward Hervey <edward@fluendo.com>
+ *
+ * gstmultiqueue.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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include "gstmultiqueue.h"
+
+/**
+ * GstSingleQueue:
+ * @sinkpad: associated sink #GstPad
+ * @srcpad: associated source #GstPad
+ *
+ * Structure containing all information and properties about
+ * a single queue.
+ */
+
+typedef struct _GstSingleQueue GstSingleQueue;
+
+struct _GstSingleQueue
+{
+ /* unique identifier of the queue */
+ guint id;
+
+ GstMultiQueue *mqueue;
+
+ GstPad *sinkpad;
+ GstPad *srcpad;
+
+ /* flowreturn of previous srcpad push */
+ GstFlowReturn srcresult;
+
+ /* queue of data */
+ GstDataQueue *queue;
+ GstDataQueueSize max_size, extra_size;
+
+ /* Protected by global lock */
+ guint32 nextid; /* ID of the next object waiting to be pushed */
+ guint32 oldid; /* ID of the last object pushed (last in a series) */
+ GCond *turn; /* SingleQueue turn waiting conditional */
+};
+
+
+/* Extension of GstDataQueueItem structure for our usage */
+typedef struct _GstMultiQueueItem GstMultiQueueItem;
+
+struct _GstMultiQueueItem
+{
+ GstMiniObject *object;
+ guint size;
+ guint64 duration;
+ gboolean visible;
+
+ GDestroyNotify destroy;
+ guint32 posid;
+};
+
+static GstSingleQueue *gst_single_queue_new (GstMultiQueue * mqueue);
+
+static void wake_up_next_non_linked (GstMultiQueue * mq);
+static void compute_next_non_linked (GstMultiQueue * mq);
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink%d",
+ GST_PAD_SINK,
+ GST_PAD_REQUEST,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src%d",
+ GST_PAD_SRC,
+ GST_PAD_SOMETIMES,
+ GST_STATIC_CAPS_ANY);
+
+GST_DEBUG_CATEGORY_STATIC (multi_queue_debug);
+#define GST_CAT_DEFAULT (multi_queue_debug)
+
+static const GstElementDetails gst_multi_queue_details =
+GST_ELEMENT_DETAILS ("MultiQueue",
+ "Generic",
+ "Multiple data queue",
+ "Edward Hervey <edward@fluendo.com>");
+
+#define DEFAULT_MAX_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
+#define DEFAULT_MAX_SIZE_BUFFERS 200
+#define DEFAULT_MAX_SIZE_TIME GST_SECOND
+
+#define DEFAULT_EXTRA_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
+#define DEFAULT_EXTRA_SIZE_BUFFERS 200
+#define DEFAULT_EXTRA_SIZE_TIME GST_SECOND
+
+/* Signals and args */
+enum
+{
+ SIGNAL_UNDERRUN,
+ SIGNAL_OVERRUN,
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+ ARG_EXTRA_SIZE_BYTES,
+ ARG_EXTRA_SIZE_BUFFERS,
+ ARG_EXTRA_SIZE_TIME,
+ ARG_MAX_SIZE_BYTES,
+ ARG_MAX_SIZE_BUFFERS,
+ ARG_MAX_SIZE_TIME,
+};
+
+#define GST_MULTI_QUEUE_MUTEX_LOCK(q) G_STMT_START { \
+ GST_CAT_LOG_OBJECT (multi_queue_debug, q, \
+ "locking qlock from thread %p", \
+ g_thread_self ()); \
+ g_mutex_lock (q->qlock); \
+ GST_CAT_LOG_OBJECT (multi_queue_debug, q, \
+ "locked qlock from thread %p", \
+ g_thread_self ()); \
+} G_STMT_END
+
+#define GST_MULTI_QUEUE_MUTEX_UNLOCK(q) G_STMT_START { \
+ GST_CAT_LOG_OBJECT (multi_queue_debug, q, \
+ "unlocking qlock from thread %p", \
+ g_thread_self ()); \
+ g_mutex_unlock (q->qlock); \
+} G_STMT_END
+
+static void gst_multi_queue_finalize (GObject * object);
+static void gst_multi_queue_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_multi_queue_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+static GstPad *gst_multi_queue_request_new_pad (GstElement * element,
+ GstPadTemplate * temp, const gchar * name);
+static void gst_multi_queue_release_pad (GstElement * element, GstPad * pad);
+
+#define _do_init(bla) \
+ GST_DEBUG_CATEGORY_INIT (multi_queue_debug, "multiqueue", 0, "multiqueue element");
+
+GST_BOILERPLATE_FULL (GstMultiQueue, gst_multi_queue, GstElement,
+ GST_TYPE_ELEMENT, _do_init);
+
+static guint gst_multi_queue_signals[LAST_SIGNAL] = { 0 };
+
+static void
+gst_multi_queue_base_init (gpointer g_class)
+{
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&sinktemplate));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&srctemplate));
+ gst_element_class_set_details (gstelement_class, &gst_multi_queue_details);
+}
+
+static void
+gst_multi_queue_class_init (GstMultiQueueClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->set_property =
+ GST_DEBUG_FUNCPTR (gst_multi_queue_set_property);
+ gobject_class->get_property =
+ GST_DEBUG_FUNCPTR (gst_multi_queue_get_property);
+
+ /* SIGNALS */
+ gst_multi_queue_signals[SIGNAL_UNDERRUN] =
+ g_signal_new ("underrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GstMultiQueueClass, underrun), NULL, NULL,
+ g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+ gst_multi_queue_signals[SIGNAL_OVERRUN] =
+ g_signal_new ("overrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GstMultiQueueClass, overrun), NULL, NULL,
+ g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+ /* PROPERTIES */
+
+ g_object_class_install_property (gobject_class, ARG_MAX_SIZE_BYTES,
+ g_param_spec_uint ("max-size-bytes", "Max. size (kB)",
+ "Max. amount of data in the queue (bytes, 0=disable)",
+ 0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, ARG_MAX_SIZE_BUFFERS,
+ g_param_spec_uint ("max-size-buffers", "Max. size (buffers)",
+ "Max. number of buffers in the queue (0=disable)",
+ 0, G_MAXUINT, DEFAULT_MAX_SIZE_BUFFERS, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, ARG_MAX_SIZE_TIME,
+ g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
+ "Max. amount of data in the queue (in ns, 0=disable)",
+ 0, G_MAXUINT64, DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE));
+
+ g_object_class_install_property (gobject_class, ARG_EXTRA_SIZE_BYTES,
+ g_param_spec_uint ("extra-size-bytes", "Extra Size (kB)",
+ "Amount of data the queues can grow if one of them is empty (bytes, 0=disable)",
+ 0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BYTES, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, ARG_EXTRA_SIZE_BUFFERS,
+ g_param_spec_uint ("extra-size-buffers", "Extra Size (buffers)",
+ "Amount of buffers the queues can grow if one of them is empty (0=disable)",
+ 0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BUFFERS, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, ARG_EXTRA_SIZE_TIME,
+ g_param_spec_uint64 ("extra-size-time", "Extra Size (ns)",
+ "Amount of time the queues can grow if one of them is empty (in ns, 0=disable)",
+ 0, G_MAXUINT64, DEFAULT_EXTRA_SIZE_TIME, G_PARAM_READWRITE));
+
+ gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_multi_queue_finalize);
+
+ gstelement_class->request_new_pad =
+ GST_DEBUG_FUNCPTR (gst_multi_queue_request_new_pad);
+ gstelement_class->release_pad =
+ GST_DEBUG_FUNCPTR (gst_multi_queue_release_pad);
+}
+
+static void
+gst_multi_queue_init (GstMultiQueue * mqueue, GstMultiQueueClass * klass)
+{
+
+ mqueue->nbqueues = 0;
+ mqueue->queues = NULL;
+
+ mqueue->max_size.bytes = DEFAULT_MAX_SIZE_BYTES;
+ mqueue->max_size.visible = DEFAULT_MAX_SIZE_BUFFERS;
+ mqueue->max_size.time = DEFAULT_MAX_SIZE_TIME;
+
+ mqueue->extra_size.bytes = DEFAULT_EXTRA_SIZE_BYTES;
+ mqueue->extra_size.visible = DEFAULT_EXTRA_SIZE_BUFFERS;
+ mqueue->extra_size.time = DEFAULT_EXTRA_SIZE_TIME;
+
+ mqueue->counter = 0;
+ mqueue->highid = -1;
+ mqueue->nextnotlinked = -1;
+
+ mqueue->qlock = g_mutex_new ();
+
+ /* FILLME ? */
+}
+
+static void
+gst_multi_queue_finalize (GObject * object)
+{
+ GstMultiQueue *mqueue = GST_MULTI_QUEUE (object);
+ GList *tmp = mqueue->queues;
+
+ /* FILLME ? */
+ /* DRAIN QUEUES */
+ while (tmp) {
+ GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
+
+ gst_data_queue_flush (sq->queue);
+ g_object_unref (G_OBJECT (sq->queue));
+
+ tmp = g_list_next (tmp);
+ }
+ g_list_free (mqueue->queues);
+
+ /* free/unref instance data */
+ g_mutex_free (mqueue->qlock);
+
+ if (G_OBJECT_CLASS (parent_class)->finalize)
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+#define SET_CHILD_PROPERTY(mq,name,value) G_STMT_START { \
+ GList * tmp = mq->queues; \
+ while (tmp) { \
+ GstSingleQueue *q = (GstSingleQueue*)tmp->data; \
+ g_object_set_property ((GObject*) q->queue, name, value); \
+ tmp = g_list_next(tmp); \
+ }; \
+} G_STMT_END
+
+static void
+gst_multi_queue_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstMultiQueue *mq = GST_MULTI_QUEUE (object);
+
+ switch (prop_id) {
+ case ARG_MAX_SIZE_BYTES:
+ mq->max_size.bytes = g_value_get_uint (value);
+ SET_CHILD_PROPERTY (mq, "max-size-bytes", value);
+ break;
+ case ARG_MAX_SIZE_BUFFERS:
+ mq->max_size.visible = g_value_get_uint (value);
+ SET_CHILD_PROPERTY (mq, "max-size-visible", value);
+ break;
+ case ARG_MAX_SIZE_TIME:
+ mq->max_size.time = g_value_get_uint64 (value);
+ SET_CHILD_PROPERTY (mq, "max-size-time", value);
+ break;
+ case ARG_EXTRA_SIZE_BYTES:
+ mq->extra_size.bytes = g_value_get_uint (value);
+ break;
+ case ARG_EXTRA_SIZE_BUFFERS:
+ mq->extra_size.visible = g_value_get_uint (value);
+ break;
+ case ARG_EXTRA_SIZE_TIME:
+ mq->extra_size.time = g_value_get_uint64 (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+
+}
+
+static void
+gst_multi_queue_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstMultiQueue *mq = GST_MULTI_QUEUE (object);
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+
+ switch (prop_id) {
+ case ARG_EXTRA_SIZE_BYTES:
+ g_value_set_uint (value, mq->extra_size.bytes);
+ break;
+ case ARG_EXTRA_SIZE_BUFFERS:
+ g_value_set_uint (value, mq->extra_size.visible);
+ break;
+ case ARG_EXTRA_SIZE_TIME:
+ g_value_set_uint64 (value, mq->extra_size.time);
+ break;
+ case ARG_MAX_SIZE_BYTES:
+ g_value_set_uint (value, mq->max_size.bytes);
+ break;
+ case ARG_MAX_SIZE_BUFFERS:
+ g_value_set_uint (value, mq->max_size.visible);
+ break;
+ case ARG_MAX_SIZE_TIME:
+ g_value_set_uint64 (value, mq->max_size.time);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+}
+
+
+/*
+ * GstElement methods
+ */
+
+static GstPad *
+gst_multi_queue_request_new_pad (GstElement * element, GstPadTemplate * temp,
+ const gchar * name)
+{
+ GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
+ GstSingleQueue *squeue;
+
+ GST_LOG_OBJECT (element, "name : %s", name);
+
+ /* Create a new single queue, add the sink and source pad and return the sink pad */
+ squeue = gst_single_queue_new (mqueue);
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
+ mqueue->queues = g_list_append (mqueue->queues, squeue);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
+
+ GST_DEBUG_OBJECT (mqueue, "Returning pad %s:%s",
+ GST_DEBUG_PAD_NAME (squeue->sinkpad));
+
+ return squeue->sinkpad;
+}
+
+static void
+gst_multi_queue_release_pad (GstElement * element, GstPad * pad)
+{
+ GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
+ GstSingleQueue *sq = NULL;
+ GList *tmp;
+
+ GST_LOG_OBJECT (element, "pad %s:%s", GST_DEBUG_PAD_NAME (pad));
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
+ /* Find which single queue it belongs to, knowing that it should be a sinkpad */
+ for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
+ sq = (GstSingleQueue *) tmp->data;
+
+ if (sq->sinkpad == pad)
+ break;
+ }
+
+ if (!tmp) {
+ GST_WARNING_OBJECT (mqueue, "That pad doesn't belong to this element ???");
+ return;
+ }
+
+ /* remove it from the list */
+ mqueue->queues = g_list_delete_link (mqueue->queues, tmp);
+
+ /* delete SingleQueue */
+ gst_data_queue_set_flushing (sq->queue, TRUE);
+ gst_data_queue_flush (sq->queue);
+
+ g_object_unref (G_OBJECT (sq->queue));
+
+ gst_element_remove_pad (element, sq->srcpad);
+ gst_element_remove_pad (element, sq->sinkpad);
+
+ /* FIXME : recompute next-non-linked */
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
+}
+
+static gboolean
+gst_single_queue_push_one (GstMultiQueue * mq, GstSingleQueue * sq,
+ GstMiniObject * object)
+{
+ if (GST_IS_BUFFER (object)) {
+ sq->srcresult = gst_pad_push (sq->srcpad, GST_BUFFER (object));
+
+ if ((sq->srcresult != GST_FLOW_OK)
+ && (sq->srcresult != GST_FLOW_NOT_LINKED)) {
+ GST_DEBUG_OBJECT (mq, "GstSingleQueue %d : pausing queue, reason %s",
+ sq->id, gst_flow_get_name (sq->srcresult));
+ gst_data_queue_set_flushing (sq->queue, TRUE);
+ gst_pad_pause_task (sq->srcpad);
+ }
+ } else if (GST_IS_EVENT (object)) {
+ if (GST_EVENT_TYPE (object) == GST_EVENT_EOS) {
+ sq->srcresult = GST_FLOW_UNEXPECTED;
+
+ GST_DEBUG_OBJECT (mq, "GstSingleQueue %d : pausing queue, got EOS",
+ sq->id);
+ gst_data_queue_set_flushing (sq->queue, TRUE);
+ gst_pad_pause_task (sq->srcpad);
+ }
+ gst_pad_push_event (sq->srcpad, GST_EVENT (object));
+ } else {
+ g_warning ("Unexpected object in singlequeue %d (refcounting problem?)",
+ sq->id);
+ }
+
+ return FALSE;
+}
+
+static void
+gst_multi_queue_item_destroy (GstMultiQueueItem * item)
+{
+ gst_mini_object_unref (item->object);
+ g_free (item);
+}
+
+static GstMultiQueueItem *
+gst_multi_queue_item_new (GstMiniObject * object)
+{
+ GstMultiQueueItem *item;
+
+ item = g_new0 (GstMultiQueueItem, 1);
+ item->object = gst_mini_object_ref (object);
+ item->destroy = (GDestroyNotify) gst_multi_queue_item_destroy;
+
+ if (GST_IS_BUFFER (object)) {
+ item->size = GST_BUFFER_SIZE (object);
+ item->duration = GST_BUFFER_DURATION (object);
+ if (item->duration == GST_CLOCK_TIME_NONE)
+ item->duration = 0;
+ item->visible = TRUE;
+ }
+
+ return item;
+}
+
+static void
+gst_multi_queue_loop (GstPad * pad)
+{
+ GstSingleQueue *sq;
+ GstMultiQueueItem *item;
+ GstDataQueueItem *sitem;
+ GstMultiQueue *mq;
+ GstMiniObject *object;
+ guint32 newid;
+ guint32 oldid = -1;
+
+ sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
+ mq = (GstMultiQueue *) gst_pad_get_parent (pad);
+
+restart:
+ GST_DEBUG_OBJECT (mq, "SingleQueue %d : trying to pop an object", sq->id);
+ if (!(gst_data_queue_pop (sq->queue, &sitem))) {
+ /* QUEUE FLUSHING */
+ if (sq->srcresult != GST_FLOW_OK)
+ goto out_flushing;
+ else
+ GST_WARNING_OBJECT (mq,
+ "data_queue_pop() returned FALSE, but srcresult == GST_FLOW_OK !");
+ } else {
+ item = (GstMultiQueueItem *) sitem;
+ newid = item->posid;
+ object = item->object;
+
+ GST_LOG_OBJECT (mq, "SingleQueue %d : newid:%d , oldid:%d",
+ sq->id, newid, oldid);
+
+ /* 1. Only check turn if :
+ * _ We haven't pushed anything yet
+ * _ OR the new id isn't the follower of the previous one (continuous segment) */
+ if ((oldid == -1) || (newid != (oldid + 1))) {
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+
+ GST_LOG_OBJECT (mq, "CHECKING sq->srcresult: %s",
+ gst_flow_get_name (sq->srcresult));
+
+ /* preamble : if we're not linked, set the newid as the next one we want */
+ if (sq->srcresult == GST_FLOW_NOT_LINKED)
+ sq->nextid = newid;
+
+ /* store the last id we outputted */
+ if (oldid != -1)
+ sq->oldid = oldid;
+
+ /* 2. If there's a queue waiting to push, wake it up. If it's us the */
+ /* check below (3.) will avoid us waiting. */
+ wake_up_next_non_linked (mq);
+
+ /* 3. If we're not linked AND our nextid is higher than the highest oldid outputted
+ * _ Update global next-not-linked
+ * _ Wait on our conditional
+ */
+ while ((sq->srcresult == GST_FLOW_NOT_LINKED)
+ && (mq->nextnotlinked != sq->id)) {
+ compute_next_non_linked (mq);
+ g_cond_wait (sq->turn, mq->qlock);
+ }
+
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
+ /* 4. Check again status, maybe we're flushing */
+ if ((sq->srcresult != GST_FLOW_OK)
+ && (sq->srcresult != GST_FLOW_NOT_LINKED)) {
+ gst_multi_queue_item_destroy (item);
+ goto out_flushing;
+ }
+ }
+
+ GST_LOG_OBJECT (mq, "BEFORE PUSHING sq->srcresult: %s",
+ gst_flow_get_name (sq->srcresult));
+
+ /* 4. Try to push out the new object */
+ gst_single_queue_push_one (mq, sq, object);
+
+ GST_LOG_OBJECT (mq, "AFTER PUSHING sq->srcresult: %s",
+ gst_flow_get_name (sq->srcresult));
+
+ gst_multi_queue_item_destroy (item);
+ oldid = newid;
+
+ /* 5. if GstFlowReturn is non-fatal, goto restart */
+ if ((sq->srcresult == GST_FLOW_OK)
+ || (sq->srcresult == GST_FLOW_NOT_LINKED))
+ goto restart;
+ }
+
+
+beach:
+ gst_object_unref (mq);
+ return;
+
+out_flushing:
+ {
+ gst_pad_pause_task (sq->srcpad);
+ GST_CAT_LOG_OBJECT (multi_queue_debug, mq,
+ "SingleQueue[%d] task paused, reason:%s",
+ sq->id, gst_flow_get_name (sq->srcresult));
+ goto beach;
+ }
+}
+
+
+/**
+ * gst_multi_queue_chain:
+ *
+ * This is similar to GstQueue's chain function, except:
+ * _ we don't have leak behavioures,
+ * _ we push with a unique id (curid)
+ */
+
+static GstFlowReturn
+gst_multi_queue_chain (GstPad * pad, GstBuffer * buffer)
+{
+ GstSingleQueue *sq;
+ GstMultiQueue *mq;
+ GstMultiQueueItem *item;
+ GstFlowReturn ret = GST_FLOW_OK;
+ guint32 curid;
+
+ sq = gst_pad_get_element_private (pad);
+ mq = (GstMultiQueue *) gst_pad_get_parent (pad);
+
+ /* Get an unique incrementing id */
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ curid = mq->counter++;
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
+ GST_LOG_OBJECT (mq, "SingleQueue %d : about to push buffer with id %d",
+ sq->id, curid);
+
+ item = gst_multi_queue_item_new ((GstMiniObject *) buffer);
+ item->posid = curid;
+
+ if (!(gst_data_queue_push (sq->queue, (GstDataQueueItem *) item))) {
+ GST_LOG_OBJECT (mq, "SingleQueue %d : exit because task paused, reason: %s",
+ sq->id, gst_flow_get_name (sq->srcresult));
+ gst_multi_queue_item_destroy (item);
+ gst_buffer_unref (buffer);
+ ret = sq->srcresult;
+ }
+
+ gst_object_unref (mq);
+ return ret;
+}
+
+static gboolean
+gst_multi_queue_sink_activate_push (GstPad * pad, gboolean active)
+{
+ GstSingleQueue *sq;
+
+ sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
+
+ if (active)
+ sq->srcresult = GST_FLOW_OK;
+ else {
+ sq->srcresult = GST_FLOW_WRONG_STATE;
+ gst_data_queue_flush (sq->queue);
+ }
+
+ return TRUE;
+}
+
+static gboolean
+gst_multi_queue_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstSingleQueue *sq;
+ GstMultiQueue *mq;
+ guint32 curid;
+ GstMultiQueueItem *item;
+
+ sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
+ mq = (GstMultiQueue *) gst_pad_get_parent (pad);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_START:
+ GST_DEBUG_OBJECT (mq, "SingleQueue %d : received flush start event",
+ sq->id);
+
+ gst_pad_push_event (sq->srcpad, event);
+
+ sq->srcresult = GST_FLOW_WRONG_STATE;
+ gst_data_queue_set_flushing (sq->queue, TRUE);
+
+ /* wake up non-linked task */
+ GST_LOG_OBJECT (mq, "SingleQueue %d : waking up eventually waiting task",
+ sq->id);
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ g_cond_signal (sq->turn);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
+ gst_pad_pause_task (sq->srcpad);
+ goto done;
+
+ case GST_EVENT_FLUSH_STOP:
+ GST_DEBUG_OBJECT (mq, "SingleQueue %d : received flush stop event",
+ sq->id);
+
+ gst_pad_push_event (sq->srcpad, event);
+
+ gst_data_queue_flush (sq->queue);
+ gst_data_queue_set_flushing (sq->queue, FALSE);
+ sq->srcresult = GST_FLOW_OK;
+ sq->nextid = -1;
+ sq->oldid = -1;
+
+ GST_DEBUG_OBJECT (mq, "SingleQueue %d : restarting task", sq->id);
+ gst_pad_start_task (sq->srcpad, (GstTaskFunction) gst_multi_queue_loop,
+ sq->srcpad);
+ goto done;
+
+ default:
+ if (!(GST_EVENT_IS_SERIALIZED (event))) {
+ gst_pad_push_event (sq->srcpad, event);
+ goto done;
+ }
+ break;
+ }
+
+ /* Get an unique incrementing id */
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ curid = mq->counter++;
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
+ item = gst_multi_queue_item_new ((GstMiniObject *) event);
+ item->posid = curid;
+
+ GST_DEBUG_OBJECT (mq,
+ "SingleQueue %d : Adding event %p of type %s with id %d", sq->id, event,
+ GST_EVENT_TYPE_NAME (event), curid);
+
+ if (!(gst_data_queue_push (sq->queue, (GstDataQueueItem *) item))) {
+ GST_LOG_OBJECT (mq, "SingleQueue %d : exit because task paused, reason: %s",
+ sq->id, gst_flow_get_name (sq->srcresult));
+ gst_multi_queue_item_destroy (item);
+ gst_event_unref (event);
+ }
+
+done:
+ gst_object_unref (mq);
+ return TRUE;
+}
+
+static GstCaps *
+gst_multi_queue_getcaps (GstPad * pad)
+{
+ GstSingleQueue *sq = gst_pad_get_element_private (pad);
+ GstPad *otherpad;
+ GstCaps *result;
+
+ GST_LOG_OBJECT (pad, "...");
+
+ otherpad = (pad == sq->srcpad) ? sq->sinkpad : sq->srcpad;
+
+ GST_LOG_OBJECT (otherpad, "Getting caps from the peer of this pad");
+
+ result = gst_pad_peer_get_caps (otherpad);
+ if (result == NULL)
+ result = gst_caps_new_any ();
+
+ return result;
+}
+
+static GstFlowReturn
+gst_multi_queue_bufferalloc (GstPad * pad, guint64 offset, guint size,
+ GstCaps * caps, GstBuffer ** buf)
+{
+ GstSingleQueue *sq = gst_pad_get_element_private (pad);
+
+ return gst_pad_alloc_buffer (sq->srcpad, offset, size, caps, buf);
+}
+
+static gboolean
+gst_multi_queue_src_activate_push (GstPad * pad, gboolean active)
+{
+ GstMultiQueue *mq;
+ GstSingleQueue *sq;
+ gboolean result = FALSE;
+
+ sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
+ mq = (GstMultiQueue *) gst_pad_get_parent (pad);
+
+ GST_LOG ("SingleQueue %d", sq->id);
+
+ if (active) {
+ sq->srcresult = GST_FLOW_OK;
+ gst_data_queue_set_flushing (sq->queue, FALSE);
+ result = gst_pad_start_task (pad, (GstTaskFunction) gst_multi_queue_loop,
+ pad);
+ } else {
+ /* 1. unblock loop function */
+ sq->srcresult = GST_FLOW_WRONG_STATE;
+ gst_data_queue_set_flushing (sq->queue, TRUE);
+
+ /* 2. unblock potentially non-linked pad */
+ GST_LOG_OBJECT (mq, "SingleQueue %d : waking up eventually waiting task",
+ sq->id);
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ g_cond_signal (sq->turn);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
+ /* 3. make sure streaming finishes */
+ result = gst_pad_stop_task (pad);
+ gst_data_queue_set_flushing (sq->queue, FALSE);
+ }
+
+ gst_object_unref (mq);
+ return result;
+}
+
+static gboolean
+gst_multi_queue_acceptcaps (GstPad * pad, GstCaps * caps)
+{
+ return TRUE;
+}
+
+static gboolean
+gst_multi_queue_src_event (GstPad * pad, GstEvent * event)
+{
+ GstSingleQueue *sq = gst_pad_get_element_private (pad);
+
+ return gst_pad_push_event (sq->sinkpad, event);
+}
+
+static gboolean
+gst_multi_queue_src_query (GstPad * pad, GstQuery * query)
+{
+ GstSingleQueue *sq = gst_pad_get_element_private (pad);
+ GstPad *peerpad;
+ gboolean res;
+
+ /* FILLME */
+ /* Handle position offset depending on queue size */
+
+ /* default handling */
+ if (!(peerpad = gst_pad_get_peer (sq->sinkpad)))
+ goto no_peer;
+
+ res = gst_pad_query (peerpad, query);
+
+ gst_object_unref (peerpad);
+
+ return res;
+
+no_peer:
+ {
+ GST_LOG_OBJECT (sq->sinkpad, "Couldn't send query because we have no peer");
+ return FALSE;
+ }
+}
+
+
+/*
+ * Next-non-linked functions
+ */
+
+/* WITH LOCK TAKEN */
+static void
+wake_up_next_non_linked (GstMultiQueue * mq)
+{
+ GList *tmp;
+
+ GST_LOG ("mq->nextnotlinked:%d", mq->nextnotlinked);
+
+ /* maybe no-one is waiting */
+ if (mq->nextnotlinked == -1)
+ return;
+
+ /* Else figure out which singlequeue it is and wake it up */
+ for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
+ GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
+
+ if (sq->srcresult == GST_FLOW_NOT_LINKED)
+ if (sq->id == mq->nextnotlinked) {
+ GST_LOG_OBJECT (mq, "Waking up singlequeue %d", sq->id);
+ g_cond_signal (sq->turn);
+ return;
+ }
+ }
+}
+
+/* WITH LOCK TAKEN */
+static void
+compute_next_non_linked (GstMultiQueue * mq)
+{
+ GList *tmp;
+ guint32 lowest = G_MAXUINT32;
+ gint nextid = -1;
+
+ for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
+ GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
+
+ GST_LOG ("inspecting sq:%d , nextid:%d, oldid:%d, srcresult:%s",
+ sq->id, sq->nextid, sq->oldid, gst_flow_get_name (sq->srcresult));
+
+ if (sq->srcresult == GST_FLOW_NOT_LINKED)
+ if (lowest > sq->nextid) {
+ lowest = sq->nextid;
+ nextid = sq->id;
+ }
+
+ /* If we don't have a global highid, or the global highid is lower than */
+ /* this single queue's last outputted id, store the queue's one */
+ if ((mq->highid == -1) || (mq->highid < sq->oldid))
+ mq->highid = sq->oldid;
+ }
+
+ mq->nextnotlinked = nextid;
+ GST_LOG_OBJECT (mq,
+ "Next-non-linked is sq #%d with nextid : %d. Highid is now : %d", nextid,
+ lowest, mq->highid);
+}
+
+/*
+ * GstSingleQueue functions
+ */
+
+static void
+single_queue_overrun_cb (GstSingleQueue * sq, GstMultiQueue * mq)
+{
+ GST_LOG_OBJECT (mq, "Single Queue %d is full", sq->id);
+ /* Overrun is always forwarded, since this is blocking the upstream element */
+ g_signal_emit (G_OBJECT (mq), gst_multi_queue_signals[SIGNAL_OVERRUN], 0);
+}
+
+static void
+single_queue_underrun_cb (GstSingleQueue * sq, GstMultiQueue * mq)
+{
+ gboolean empty = TRUE;
+ GList *tmp;
+
+ GST_LOG_OBJECT (mq,
+ "Single Queue %d is empty, Checking if all single queues are empty",
+ sq->id);
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
+ GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
+
+ if (!gst_data_queue_is_empty (sq->queue)) {
+ empty = FALSE;
+ break;
+ }
+ }
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
+ if (empty) {
+ GST_DEBUG_OBJECT (mq, "All queues are empty, signalling it");
+ g_signal_emit (G_OBJECT (mq), gst_multi_queue_signals[SIGNAL_UNDERRUN], 0);
+ }
+}
+
+static gboolean
+single_queue_check_full (GstDataQueue * dataq, guint visible, guint bytes,
+ guint64 time, GstSingleQueue * sq)
+{
+ gboolean res;
+
+ res = (((sq->max_size.visible != 0) &&
+ sq->max_size.visible < visible) ||
+ ((sq->max_size.bytes != 0) &&
+ sq->max_size.bytes < bytes) ||
+ ((sq->max_size.time != 0) && sq->max_size.time < time));
+
+ return res;
+}
+
+static GstSingleQueue *
+gst_single_queue_new (GstMultiQueue * mqueue)
+{
+ GstSingleQueue *sq;
+ gchar *tmp;
+
+ sq = g_new0 (GstSingleQueue, 1);
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
+ sq->id = mqueue->nbqueues++;
+
+ /* copy over max_size and extra_size so we don't need to take the lock
+ * any longer when checking if the queue is full. */
+ /* FIXME : We can't modify those values once the single queue is created
+ * since we don't have any lock protecting those values. */
+ sq->max_size.visible = mqueue->max_size.visible;
+ sq->max_size.bytes = mqueue->max_size.bytes;
+ sq->max_size.time = mqueue->max_size.time;
+
+ sq->extra_size.visible = mqueue->extra_size.visible;
+ sq->extra_size.bytes = mqueue->extra_size.bytes;
+ sq->extra_size.time = mqueue->extra_size.time;
+
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
+
+ GST_DEBUG_OBJECT (mqueue, "Creating GstSingleQueue id:%d", sq->id);
+
+ sq->mqueue = mqueue;
+ sq->srcresult = GST_FLOW_OK;
+ sq->queue =
+ gst_data_queue_new ((GstDataQueueCheckFullFunction)
+ single_queue_check_full, sq);
+
+ sq->nextid = -1;
+ sq->oldid = -1;
+ sq->turn = g_cond_new ();
+
+ /* FIXME : attach to underrun/overrun signals to handle non-starvation
+ * OR should this be handled when we check if the queue is full/empty before pushing/popping ? */
+
+ g_signal_connect (G_OBJECT (sq->queue), "full",
+ G_CALLBACK (single_queue_overrun_cb), mqueue);
+
+ g_signal_connect (G_OBJECT (sq->queue), "empty",
+ G_CALLBACK (single_queue_underrun_cb), mqueue);
+
+ tmp = g_strdup_printf ("sink%d", sq->id);
+ sq->sinkpad = gst_pad_new_from_static_template (&sinktemplate, tmp);
+ g_free (tmp);
+
+ gst_pad_set_chain_function (sq->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_chain));
+ gst_pad_set_activatepush_function (sq->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_sink_activate_push));
+ gst_pad_set_event_function (sq->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_sink_event));
+ gst_pad_set_getcaps_function (sq->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_getcaps));
+ gst_pad_set_bufferalloc_function (sq->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_bufferalloc));
+
+ tmp = g_strdup_printf ("src%d", sq->id);
+ sq->srcpad = gst_pad_new_from_static_template (&srctemplate, tmp);
+ g_free (tmp);
+
+ gst_pad_set_activatepush_function (sq->srcpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_src_activate_push));
+ gst_pad_set_acceptcaps_function (sq->srcpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_acceptcaps));
+ gst_pad_set_getcaps_function (sq->srcpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_getcaps));
+ gst_pad_set_event_function (sq->srcpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_src_event));
+ gst_pad_set_query_function (sq->srcpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_src_query));
+
+ gst_pad_set_element_private (sq->sinkpad, (gpointer) sq);
+ gst_pad_set_element_private (sq->srcpad, (gpointer) sq);
+
+ gst_element_add_pad (GST_ELEMENT (mqueue), sq->sinkpad);
+ gst_element_add_pad (GST_ELEMENT (mqueue), sq->srcpad);
+
+ gst_pad_set_active (sq->srcpad, TRUE);
+ gst_pad_set_active (sq->sinkpad, TRUE);
+
+ GST_DEBUG_OBJECT (mqueue, "GstSingleQueue [%d] created and pads added",
+ sq->id);
+
+ return sq;
+}
projects / platform / upstream / gstreamer.git / commitdiff