index dda05740095550608c9ef71dd12a24e746254e27..89d2289397e770ee548a414609734870eecabf05 100644 (file)
/* GStreamer
* Copyright (C) 2006 Edward Hervey <edward@fluendo.com>
+ * Copyright (C) 2007 Jan Schmidt <jan@fluendo.com>
+ * Copyright (C) 2007 Wim Taymans <wim@fluendo.com>
+ * Copyright (C) 2011 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* gstmultiqueue.c:
*
* Boston, MA 02111-1307, USA.
*/
+/**
+ * SECTION:element-multiqueue
+ * @see_also: #GstQueue
+ *
+ * <refsect2>
+ * <para>
+ * Multiqueue is similar to a normal #GstQueue with the following additional
+ * features:
+ * <orderedlist>
+ * <listitem>
+ * <itemizedlist><title>Multiple streamhandling</title>
+ * <listitem><para>
+ * The element handles queueing data on more than one stream at once. To
+ * achieve such a feature it has request sink pads (sink%d) and
+ * 'sometimes' src pads (src%d).
+ * </para><para>
+ * When requesting a given sinkpad with gst_element_get_request_pad(),
+ * the associated srcpad for that stream will be created.
+ * Example: requesting sink1 will generate src1.
+ * </para></listitem>
+ * </itemizedlist>
+ * </listitem>
+ * <listitem>
+ * <itemizedlist><title>Non-starvation on multiple streams</title>
+ * <listitem><para>
+ * If more than one stream is used with the element, the streams' queues
+ * will be dynamically grown (up to a limit), in order to ensure that no
+ * stream is risking data starvation. This guarantees that at any given
+ * time there are at least N bytes queued and available for each individual
+ * stream.
+ * </para><para>
+ * If an EOS event comes through a srcpad, the associated queue will be
+ * considered as 'not-empty' in the queue-size-growing algorithm.
+ * </para></listitem>
+ * </itemizedlist>
+ * </listitem>
+ * <listitem>
+ * <itemizedlist><title>Non-linked srcpads graceful handling</title>
+ * <listitem><para>
+ * In order to better support dynamic switching between streams, the multiqueue
+ * (unlike the current GStreamer queue) continues to push buffers on non-linked
+ * pads rather than shutting down.
+ * </para><para>
+ * In addition, to prevent a non-linked stream from very quickly consuming all
+ * available buffers and thus 'racing ahead' of the other streams, the element
+ * must ensure that buffers and inlined events for a non-linked stream are pushed
+ * in the same order as they were received, relative to the other streams
+ * controlled by the element. This means that a buffer cannot be pushed to a
+ * non-linked pad any sooner than buffers in any other stream which were received
+ * before it.
+ * </para></listitem>
+ * </itemizedlist>
+ * </listitem>
+ * </orderedlist>
+ * </para>
+ * <para>
+ * Data is queued until one of the limits specified by the
+ * #GstMultiQueue:max-size-buffers, #GstMultiQueue:max-size-bytes and/or
+ * #GstMultiQueue:max-size-time properties has been reached. Any attempt to push
+ * more buffers into the queue will block the pushing thread until more space
+ * becomes available. #GstMultiQueue:extra-size-buffers,
+ * </para>
+ * <para>
+ * #GstMultiQueue:extra-size-bytes and #GstMultiQueue:extra-size-time are
+ * currently unused.
+ * </para>
+ * <para>
+ * The default queue size limits are 5 buffers, 10MB of data, or
+ * two second worth of data, whichever is reached first. Note that the number
+ * of buffers will dynamically grow depending on the fill level of
+ * other queues.
+ * </para>
+ * <para>
+ * The #GstMultiQueue::underrun signal is emitted when all of the queues
+ * are empty. The #GstMultiQueue::overrun signal is emitted when one of the
+ * queues is filled.
+ * Both signals are emitted from the context of the streaming thread.
+ * </para>
+ * </refsect2>
+ *
+ * Last reviewed on 2008-01-25 (0.10.17)
+ */
+
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gst/gst.h>
+#include <stdio.h>
#include "gstmultiqueue.h"
+#include <gst/glib-compat-private.h>
/**
* GstSingleQueue:
* Structure containing all information and properties about
* a single queue.
*/
-
typedef struct _GstSingleQueue GstSingleQueue;
struct _GstSingleQueue
/* flowreturn of previous srcpad push */
GstFlowReturn srcresult;
+ /* segments */
+ GstSegment sink_segment;
+ GstSegment src_segment;
+
+ /* position of src/sink */
+ GstClockTime sinktime, srctime;
+ /* TRUE if either position needs to be recalculated */
+ gboolean sink_tainted, src_tainted;
+
/* queue of data */
GstDataQueue *queue;
GstDataQueueSize max_size, extra_size;
+ GstClockTime cur_time;
+ gboolean is_eos;
+ gboolean flushing;
/* 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) */
+ guint32 last_oldid; /* Previously observed old_id, reset to MAXUINT32 on flush */
+ GstClockTime next_time; /* End running time of next buffer to be pushed */
+ GstClockTime last_time; /* Start running time of last pushed buffer */
GCond *turn; /* SingleQueue turn waiting conditional */
};
guint32 posid;
};
-static GstSingleQueue *gst_single_queue_new (GstMultiQueue * mqueue);
+static GstSingleQueue *gst_single_queue_new (GstMultiQueue * mqueue, gint id);
+static void gst_single_queue_free (GstSingleQueue * squeue);
static void wake_up_next_non_linked (GstMultiQueue * mq);
-static void compute_next_non_linked (GstMultiQueue * mq);
+static void compute_high_id (GstMultiQueue * mq);
+static void compute_high_time (GstMultiQueue * mq);
+static void single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq);
+static void single_queue_underrun_cb (GstDataQueue * dq, GstSingleQueue * sq);
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink%d",
GST_PAD_SINK,
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
{
LAST_SIGNAL
};
+/* default limits, we try to keep up to 2 seconds of data and if there is not
+ * time, up to 10 MB. The number of buffers is dynamically scaled to make sure
+ * there is data in the queues. Normally, the byte and time limits are not hit
+ * in theses conditions. */
+#define DEFAULT_MAX_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
+#define DEFAULT_MAX_SIZE_BUFFERS 5
+#define DEFAULT_MAX_SIZE_TIME 2 * GST_SECOND
+
+/* second limits. When we hit one of the above limits we are probably dealing
+ * with a badly muxed file and we scale the limits to these emergency values.
+ * This is currently not yet implemented.
+ * Since we dynamically scale the queue buffer size up to the limits but avoid
+ * going above the max-size-buffers when we can, we don't really need this
+ * aditional extra size. */
+#define DEFAULT_EXTRA_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
+#define DEFAULT_EXTRA_SIZE_BUFFERS 5
+#define DEFAULT_EXTRA_SIZE_TIME 3 * GST_SECOND
+
+#define DEFAULT_USE_BUFFERING FALSE
+#define DEFAULT_LOW_PERCENT 10
+#define DEFAULT_HIGH_PERCENT 99
+#define DEFAULT_SYNC_BY_RUNNING_TIME FALSE
+
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,
+ PROP_0,
+ PROP_EXTRA_SIZE_BYTES,
+ PROP_EXTRA_SIZE_BUFFERS,
+ PROP_EXTRA_SIZE_TIME,
+ PROP_MAX_SIZE_BYTES,
+ PROP_MAX_SIZE_BUFFERS,
+ PROP_MAX_SIZE_TIME,
+ PROP_USE_BUFFERING,
+ PROP_LOW_PERCENT,
+ PROP_HIGH_PERCENT,
+ PROP_SYNC_BY_RUNNING_TIME,
+ PROP_LAST
};
#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 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);
+static GstStateChangeReturn gst_multi_queue_change_state (GstElement *
+ element, GstStateChange transition);
+
+static void gst_multi_queue_loop (GstPad * pad);
#define _do_init(bla) \
GST_DEBUG_CATEGORY_INIT (multi_queue_debug, "multiqueue", 0, "multiqueue element");
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
+ gst_element_class_set_details_simple (gstelement_class,
+ "MultiQueue",
+ "Generic", "Multiple data queue", "Edward Hervey <edward@fluendo.com>");
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
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);
+ gobject_class->set_property = gst_multi_queue_set_property;
+ gobject_class->get_property = gst_multi_queue_get_property;
/* SIGNALS */
+
+ /**
+ * GstMultiQueue::underrun:
+ * @multiqueue: the multqueue instance
+ *
+ * This signal is emitted from the streaming thread when there is
+ * no data in any of the queues inside the multiqueue instance (underrun).
+ *
+ * This indicates either starvation or EOS from the upstream data sources.
+ */
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);
+ /**
+ * GstMultiQueue::overrun:
+ * @multiqueue: the multiqueue instance
+ *
+ * Reports that one of the queues in the multiqueue is full (overrun).
+ * A queue is full if the total amount of data inside it (num-buffers, time,
+ * size) is higher than the boundary values which can be set through the
+ * GObject properties.
+ *
+ * This can be used as an indicator of pre-roll.
+ */
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,
/* PROPERTIES */
- g_object_class_install_property (gobject_class, ARG_MAX_SIZE_BYTES,
+ g_object_class_install_property (gobject_class, PROP_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,
+ 0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_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,
+ "Max. number of buffers in the queue (0=disable)", 0, G_MAXUINT,
+ DEFAULT_MAX_SIZE_BUFFERS,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_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));
+ "Max. amount of data in the queue (in ns, 0=disable)", 0, G_MAXUINT64,
+ DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, ARG_EXTRA_SIZE_BYTES,
+ g_object_class_install_property (gobject_class, PROP_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,
+ "Amount of data the queues can grow if one of them is empty (bytes, 0=disable)"
+ " (NOT IMPLEMENTED)",
+ 0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BYTES,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_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,
+ "Amount of buffers the queues can grow if one of them is empty (0=disable)"
+ " (NOT IMPLEMENTED)",
+ 0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BUFFERS,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_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);
+ "Amount of time the queues can grow if one of them is empty (in ns, 0=disable)"
+ " (NOT IMPLEMENTED)",
+ 0, G_MAXUINT64, DEFAULT_EXTRA_SIZE_TIME,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstMultiQueue:use-buffering
+ *
+ * Enable the buffering option in multiqueue so that BUFFERING messages are
+ * emited based on low-/high-percent thresholds.
+ *
+ * Since: 0.10.26
+ */
+ g_object_class_install_property (gobject_class, PROP_USE_BUFFERING,
+ g_param_spec_boolean ("use-buffering", "Use buffering",
+ "Emit GST_MESSAGE_BUFFERING based on low-/high-percent thresholds",
+ DEFAULT_USE_BUFFERING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ /**
+ * GstMultiQueue:low-percent
+ *
+ * Low threshold percent for buffering to start.
+ *
+ * Since: 0.10.26
+ */
+ g_object_class_install_property (gobject_class, PROP_LOW_PERCENT,
+ g_param_spec_int ("low-percent", "Low percent",
+ "Low threshold for buffering to start", 0, 100,
+ DEFAULT_LOW_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ /**
+ * GstMultiQueue:high-percent
+ *
+ * High threshold percent for buffering to finish.
+ *
+ * Since: 0.10.26
+ */
+ g_object_class_install_property (gobject_class, PROP_HIGH_PERCENT,
+ g_param_spec_int ("high-percent", "High percent",
+ "High threshold for buffering to finish", 0, 100,
+ DEFAULT_HIGH_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstMultiQueue:sync-by-running-time
+ *
+ * If enabled multiqueue will synchronize deactivated or not-linked streams
+ * to the activated and linked streams by taking the running time.
+ * Otherwise multiqueue will synchronize the deactivated or not-linked
+ * streams by keeping the order in which buffers and events arrived compared
+ * to active and linked streams.
+ *
+ * Since: 0.10.36
+ */
+ g_object_class_install_property (gobject_class, PROP_SYNC_BY_RUNNING_TIME,
+ g_param_spec_boolean ("sync-by-running-time", "Sync By Running Time",
+ "Synchronize deactivated or not-linked streams by running time",
+ DEFAULT_SYNC_BY_RUNNING_TIME,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ gobject_class->finalize = 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);
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_multi_queue_change_state);
}
static void
gst_multi_queue_init (GstMultiQueue * mqueue, GstMultiQueueClass * klass)
{
-
mqueue->nbqueues = 0;
mqueue->queues = NULL;
mqueue->extra_size.visible = DEFAULT_EXTRA_SIZE_BUFFERS;
mqueue->extra_size.time = DEFAULT_EXTRA_SIZE_TIME;
- mqueue->counter = 0;
+ mqueue->use_buffering = DEFAULT_USE_BUFFERING;
+ mqueue->low_percent = DEFAULT_LOW_PERCENT;
+ mqueue->high_percent = DEFAULT_HIGH_PERCENT;
+
+ mqueue->sync_by_running_time = DEFAULT_SYNC_BY_RUNNING_TIME;
+
+ mqueue->counter = 1;
mqueue->highid = -1;
- mqueue->nextnotlinked = -1;
+ mqueue->high_time = GST_CLOCK_TIME_NONE;
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_foreach (mqueue->queues, (GFunc) gst_single_queue_free, NULL);
g_list_free (mqueue->queues);
+ mqueue->queues = NULL;
+ mqueue->queues_cookie++;
/* free/unref instance data */
g_mutex_free (mqueue->qlock);
- if (G_OBJECT_CLASS (parent_class)->finalize)
- G_OBJECT_CLASS (parent_class)->finalize (object);
+ G_OBJECT_CLASS (parent_class)->finalize (object);
}
-#define SET_CHILD_PROPERTY(mq,name,value) G_STMT_START { \
+#define SET_CHILD_PROPERTY(mq,format) G_STMT_START { \
GList * tmp = mq->queues; \
while (tmp) { \
GstSingleQueue *q = (GstSingleQueue*)tmp->data; \
- g_object_set_property ((GObject*) q->queue, name, value); \
+ q->max_size.format = mq->max_size.format; \
tmp = g_list_next(tmp); \
}; \
} G_STMT_END
GstMultiQueue *mq = GST_MULTI_QUEUE (object);
switch (prop_id) {
- case ARG_MAX_SIZE_BYTES:
+ case PROP_MAX_SIZE_BYTES:
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
mq->max_size.bytes = g_value_get_uint (value);
- SET_CHILD_PROPERTY (mq, "max-size-bytes", value);
+ SET_CHILD_PROPERTY (mq, bytes);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
break;
- case ARG_MAX_SIZE_BUFFERS:
+ case PROP_MAX_SIZE_BUFFERS:
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
mq->max_size.visible = g_value_get_uint (value);
- SET_CHILD_PROPERTY (mq, "max-size-visible", value);
+ SET_CHILD_PROPERTY (mq, visible);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
break;
- case ARG_MAX_SIZE_TIME:
+ case PROP_MAX_SIZE_TIME:
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
mq->max_size.time = g_value_get_uint64 (value);
- SET_CHILD_PROPERTY (mq, "max-size-time", value);
+ SET_CHILD_PROPERTY (mq, time);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
break;
- case ARG_EXTRA_SIZE_BYTES:
+ case PROP_EXTRA_SIZE_BYTES:
mq->extra_size.bytes = g_value_get_uint (value);
break;
- case ARG_EXTRA_SIZE_BUFFERS:
+ case PROP_EXTRA_SIZE_BUFFERS:
mq->extra_size.visible = g_value_get_uint (value);
break;
- case ARG_EXTRA_SIZE_TIME:
+ case PROP_EXTRA_SIZE_TIME:
mq->extra_size.time = g_value_get_uint64 (value);
break;
+ case PROP_USE_BUFFERING:
+ mq->use_buffering = g_value_get_boolean (value);
+ break;
+ case PROP_LOW_PERCENT:
+ mq->low_percent = g_value_get_int (value);
+ break;
+ case PROP_HIGH_PERCENT:
+ mq->high_percent = g_value_get_int (value);
+ break;
+ case PROP_SYNC_BY_RUNNING_TIME:
+ mq->sync_by_running_time = g_value_get_boolean (value);
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
-
}
static void
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
switch (prop_id) {
- case ARG_EXTRA_SIZE_BYTES:
+ case PROP_EXTRA_SIZE_BYTES:
g_value_set_uint (value, mq->extra_size.bytes);
break;
- case ARG_EXTRA_SIZE_BUFFERS:
+ case PROP_EXTRA_SIZE_BUFFERS:
g_value_set_uint (value, mq->extra_size.visible);
break;
- case ARG_EXTRA_SIZE_TIME:
+ case PROP_EXTRA_SIZE_TIME:
g_value_set_uint64 (value, mq->extra_size.time);
break;
- case ARG_MAX_SIZE_BYTES:
+ case PROP_MAX_SIZE_BYTES:
g_value_set_uint (value, mq->max_size.bytes);
break;
- case ARG_MAX_SIZE_BUFFERS:
+ case PROP_MAX_SIZE_BUFFERS:
g_value_set_uint (value, mq->max_size.visible);
break;
- case ARG_MAX_SIZE_TIME:
+ case PROP_MAX_SIZE_TIME:
g_value_set_uint64 (value, mq->max_size.time);
break;
+ case PROP_USE_BUFFERING:
+ g_value_set_boolean (value, mq->use_buffering);
+ break;
+ case PROP_LOW_PERCENT:
+ g_value_set_int (value, mq->low_percent);
+ break;
+ case PROP_HIGH_PERCENT:
+ g_value_set_int (value, mq->high_percent);
+ break;
+ case PROP_SYNC_BY_RUNNING_TIME:
+ g_value_set_boolean (value, mq->sync_by_running_time);
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
}
+static GstIterator *
+gst_multi_queue_iterate_internal_links (GstPad * pad)
+{
+ GstIterator *it = NULL;
+ GstPad *opad;
+ GstSingleQueue *squeue;
+ GstMultiQueue *mq = GST_MULTI_QUEUE (gst_pad_get_parent (pad));
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ squeue = gst_pad_get_element_private (pad);
+ if (!squeue)
+ goto out;
+
+ if (squeue->sinkpad == pad)
+ opad = gst_object_ref (squeue->srcpad);
+ else if (squeue->srcpad == pad)
+ opad = gst_object_ref (squeue->sinkpad);
+ else
+ goto out;
+
+ it = gst_iterator_new_single (GST_TYPE_PAD, opad,
+ (GstCopyFunction) gst_object_ref, (GFreeFunc) gst_object_unref);
+
+ gst_object_unref (opad);
+
+out:
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+ gst_object_unref (mq);
+
+ return it;
+}
+
/*
* GstElement methods
{
GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
GstSingleQueue *squeue;
+ gint temp_id = -1;
- GST_LOG_OBJECT (element, "name : %s", name);
+ if (name) {
+ sscanf (name + 4, "%d", &temp_id);
+ GST_LOG_OBJECT (element, "name : %s (id %d)", GST_STR_NULL (name), temp_id);
+ }
/* 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);
+ squeue = gst_single_queue_new (mqueue, temp_id);
GST_DEBUG_OBJECT (mqueue, "Returning pad %s:%s",
GST_DEBUG_PAD_NAME (squeue->sinkpad));
- return squeue->sinkpad;
+ return squeue ? squeue->sinkpad : NULL;
}
static void
if (!tmp) {
GST_WARNING_OBJECT (mqueue, "That pad doesn't belong to this element ???");
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
return;
}
+ /* FIXME: The removal of the singlequeue should probably not happen until it
+ * finishes draining */
+
/* remove it from the list */
mqueue->queues = g_list_delete_link (mqueue->queues, tmp);
+ mqueue->queues_cookie++;
+
+ /* FIXME : recompute next-non-linked */
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
/* delete SingleQueue */
gst_data_queue_set_flushing (sq->queue, TRUE);
- gst_data_queue_flush (sq->queue);
-
- g_object_unref (G_OBJECT (sq->queue));
+ gst_pad_set_active (sq->srcpad, FALSE);
+ gst_pad_set_active (sq->sinkpad, FALSE);
+ gst_pad_set_element_private (sq->srcpad, NULL);
+ gst_pad_set_element_private (sq->sinkpad, NULL);
gst_element_remove_pad (element, sq->srcpad);
gst_element_remove_pad (element, sq->sinkpad);
+ gst_single_queue_free (sq);
+}
+
+static GstStateChangeReturn
+gst_multi_queue_change_state (GstElement * element, GstStateChange transition)
+{
+ GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
+ GstSingleQueue *sq = NULL;
+ GstStateChangeReturn result;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:{
+ GList *tmp;
+
+ /* Set all pads to non-flushing */
+ GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
+ for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
+ sq = (GstSingleQueue *) tmp->data;
+ sq->flushing = FALSE;
+ }
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
+ break;
+ }
+ case GST_STATE_CHANGE_PAUSED_TO_READY:{
+ GList *tmp;
+
+ /* Un-wait all waiting pads */
+ GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
+ for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
+ sq = (GstSingleQueue *) tmp->data;
+ sq->flushing = TRUE;
+ g_cond_signal (sq->turn);
+ }
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
+ break;
+ }
+ default:
+ break;
+ }
+
+ result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ default:
+ break;
+ }
+
+ return result;
+
+
- /* FIXME : recompute next-non-linked */
- GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
}
static gboolean
-gst_single_queue_push_one (GstMultiQueue * mq, GstSingleQueue * sq,
- GstMiniObject * object)
+gst_single_queue_flush (GstMultiQueue * mq, GstSingleQueue * sq, gboolean flush)
{
+ gboolean result;
+
+ GST_DEBUG_OBJECT (mq, "flush %s queue %d", (flush ? "start" : "stop"),
+ sq->id);
+
+ if (flush) {
+ sq->srcresult = GST_FLOW_WRONG_STATE;
+ gst_data_queue_set_flushing (sq->queue, TRUE);
+
+ sq->flushing = 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_LOG_OBJECT (mq, "SingleQueue %d : pausing task", sq->id);
+ result = gst_pad_pause_task (sq->srcpad);
+ sq->sink_tainted = sq->src_tainted = TRUE;
+ } else {
+ gst_data_queue_flush (sq->queue);
+ gst_segment_init (&sq->sink_segment, GST_FORMAT_TIME);
+ gst_segment_init (&sq->src_segment, GST_FORMAT_TIME);
+ /* All pads start off not-linked for a smooth kick-off */
+ sq->srcresult = GST_FLOW_OK;
+ sq->cur_time = 0;
+ sq->max_size.visible = mq->max_size.visible;
+ sq->is_eos = FALSE;
+ sq->nextid = 0;
+ sq->oldid = 0;
+ sq->last_oldid = G_MAXUINT32;
+ sq->next_time = GST_CLOCK_TIME_NONE;
+ sq->last_time = GST_CLOCK_TIME_NONE;
+ gst_data_queue_set_flushing (sq->queue, FALSE);
+
+ /* Reset high time to be recomputed next */
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ mq->high_time = GST_CLOCK_TIME_NONE;
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
+ sq->flushing = FALSE;
+
+ GST_LOG_OBJECT (mq, "SingleQueue %d : starting task", sq->id);
+ result =
+ gst_pad_start_task (sq->srcpad, (GstTaskFunction) gst_multi_queue_loop,
+ sq->srcpad);
+ }
+ return result;
+}
+
+static void
+update_buffering (GstMultiQueue * mq, GstSingleQueue * sq)
+{
+ GstDataQueueSize size;
+ gint percent, tmp;
+ gboolean post = FALSE;
+
+ /* nothing to dowhen we are not in buffering mode */
+ if (!mq->use_buffering)
+ return;
+
+ gst_data_queue_get_level (sq->queue, &size);
+
+ GST_DEBUG_OBJECT (mq,
+ "queue %d: visible %u/%u, bytes %u/%u, time %" G_GUINT64_FORMAT "/%"
+ G_GUINT64_FORMAT, sq->id, size.visible, sq->max_size.visible,
+ size.bytes, sq->max_size.bytes, sq->cur_time, sq->max_size.time);
+
+ /* get bytes and time percentages and take the max */
+ if (sq->is_eos) {
+ percent = 100;
+ } else {
+ percent = 0;
+ if (sq->max_size.time > 0) {
+ tmp = (sq->cur_time * 100) / sq->max_size.time;
+ percent = MAX (percent, tmp);
+ }
+ if (sq->max_size.bytes > 0) {
+ tmp = (size.bytes * 100) / sq->max_size.bytes;
+ percent = MAX (percent, tmp);
+ }
+ }
+
+ if (mq->buffering) {
+ post = TRUE;
+ if (percent >= mq->high_percent) {
+ mq->buffering = FALSE;
+ }
+ /* make sure it increases */
+ percent = MAX (mq->percent, percent);
+
+ if (percent == mq->percent)
+ /* don't post if nothing changed */
+ post = FALSE;
+ else
+ /* else keep last value we posted */
+ mq->percent = percent;
+ } else {
+ if (percent < mq->low_percent) {
+ mq->buffering = TRUE;
+ mq->percent = percent;
+ post = TRUE;
+ }
+ }
+ if (post) {
+ GstMessage *message;
+
+ /* scale to high percent so that it becomes the 100% mark */
+ percent = percent * 100 / mq->high_percent;
+ /* clip */
+ if (percent > 100)
+ percent = 100;
+
+ GST_DEBUG_OBJECT (mq, "buffering %d percent", percent);
+ message = gst_message_new_buffering (GST_OBJECT_CAST (mq), percent);
+
+ gst_element_post_message (GST_ELEMENT_CAST (mq), message);
+ } else {
+ GST_DEBUG_OBJECT (mq, "filled %d percent", percent);
+ }
+}
+
+/* calculate the diff between running time on the sink and src of the queue.
+ * This is the total amount of time in the queue.
+ * WITH LOCK TAKEN */
+static void
+update_time_level (GstMultiQueue * mq, GstSingleQueue * sq)
+{
+ gint64 sink_time, src_time;
+
+ if (sq->sink_tainted) {
+ sink_time = sq->sinktime =
+ gst_segment_to_running_time (&sq->sink_segment, GST_FORMAT_TIME,
+ sq->sink_segment.last_stop);
+
+ if (G_UNLIKELY (sink_time != GST_CLOCK_TIME_NONE))
+ /* if we have a time, we become untainted and use the time */
+ sq->sink_tainted = FALSE;
+ } else
+ sink_time = sq->sinktime;
+
+ if (sq->src_tainted) {
+ src_time = sq->srctime =
+ gst_segment_to_running_time (&sq->src_segment, GST_FORMAT_TIME,
+ sq->src_segment.last_stop);
+ /* if we have a time, we become untainted and use the time */
+ if (G_UNLIKELY (src_time != GST_CLOCK_TIME_NONE))
+ sq->src_tainted = FALSE;
+ } else
+ src_time = sq->srctime;
+
+ GST_DEBUG_OBJECT (mq,
+ "queue %d, sink %" GST_TIME_FORMAT ", src %" GST_TIME_FORMAT, sq->id,
+ GST_TIME_ARGS (sink_time), GST_TIME_ARGS (src_time));
+
+ /* This allows for streams with out of order timestamping - sometimes the
+ * emerging timestamp is later than the arriving one(s) */
+ if (G_LIKELY (sink_time != -1 && src_time != -1 && sink_time > src_time))
+ sq->cur_time = sink_time - src_time;
+ else
+ sq->cur_time = 0;
+
+ /* updating the time level can change the buffering state */
+ update_buffering (mq, sq);
+
+ return;
+}
+
+/* take a NEWSEGMENT event and apply the values to segment, updating the time
+ * level of queue. */
+static void
+apply_segment (GstMultiQueue * mq, GstSingleQueue * sq, GstEvent * event,
+ GstSegment * segment)
+{
+ gboolean update;
+ GstFormat format;
+ gdouble rate, arate;
+ gint64 start, stop, time;
+
+ gst_event_parse_new_segment_full (event, &update, &rate, &arate,
+ &format, &start, &stop, &time);
+
+ /* now configure the values, we use these to track timestamps on the
+ * sinkpad. */
+ if (format != GST_FORMAT_TIME) {
+ /* non-time format, pretent the current time segment is closed with a
+ * 0 start and unknown stop time. */
+ update = FALSE;
+ format = GST_FORMAT_TIME;
+ start = 0;
+ stop = -1;
+ time = 0;
+ }
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+
+ gst_segment_set_newsegment_full (segment, update,
+ rate, arate, format, start, stop, time);
+
+ if (segment == &sq->sink_segment)
+ sq->sink_tainted = TRUE;
+ else
+ sq->src_tainted = TRUE;
+
+ GST_DEBUG_OBJECT (mq,
+ "queue %d, configured NEWSEGMENT %" GST_SEGMENT_FORMAT, sq->id, segment);
+
+ /* segment can update the time level of the queue */
+ update_time_level (mq, sq);
+
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+}
+
+/* take a buffer and update segment, updating the time level of the queue. */
+static void
+apply_buffer (GstMultiQueue * mq, GstSingleQueue * sq, GstClockTime timestamp,
+ GstClockTime duration, GstSegment * segment)
+{
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+
+ /* if no timestamp is set, assume it's continuous with the previous
+ * time */
+ if (timestamp == GST_CLOCK_TIME_NONE)
+ timestamp = segment->last_stop;
+
+ /* add duration */
+ if (duration != GST_CLOCK_TIME_NONE)
+ timestamp += duration;
+
+ GST_DEBUG_OBJECT (mq, "queue %d, last_stop updated to %" GST_TIME_FORMAT,
+ sq->id, GST_TIME_ARGS (timestamp));
+
+ gst_segment_set_last_stop (segment, GST_FORMAT_TIME, timestamp);
+
+ if (segment == &sq->sink_segment)
+ sq->sink_tainted = TRUE;
+ else
+ sq->src_tainted = TRUE;
+
+ /* calc diff with other end */
+ update_time_level (mq, sq);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+}
+
+static GstClockTime
+get_running_time (GstSegment * segment, GstMiniObject * object, gboolean end)
+{
+ GstClockTime time = GST_CLOCK_TIME_NONE;
+
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);
+ GstBuffer *buf = GST_BUFFER_CAST (object);
+
+ if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
+ time = GST_BUFFER_TIMESTAMP (buf);
+ if (end && GST_BUFFER_DURATION_IS_VALID (buf))
+ time += GST_BUFFER_DURATION (buf);
+ if (time > segment->stop)
+ time = segment->stop;
+ time = gst_segment_to_running_time (segment, GST_FORMAT_TIME, time);
}
+ } else if (GST_IS_BUFFER_LIST (object)) {
+ GstBufferList *list = GST_BUFFER_LIST_CAST (object);
+ GstBufferListIterator *it = gst_buffer_list_iterate (list);
+ GstBuffer *buf;
+
+ do {
+ while ((buf = gst_buffer_list_iterator_next (it))) {
+ if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
+ time = GST_BUFFER_TIMESTAMP (buf);
+ if (end && GST_BUFFER_DURATION_IS_VALID (buf))
+ time += GST_BUFFER_DURATION (buf);
+ if (time > segment->stop)
+ time = segment->stop;
+ time = gst_segment_to_running_time (segment, GST_FORMAT_TIME, time);
+ if (!end)
+ goto done;
+ } else if (!end) {
+ goto done;
+ }
+ }
+ } while (gst_buffer_list_iterator_next_group (it));
} else if (GST_IS_EVENT (object)) {
- if (GST_EVENT_TYPE (object) == GST_EVENT_EOS) {
- sq->srcresult = GST_FLOW_UNEXPECTED;
+ GstEvent *event = GST_EVENT_CAST (object);
+
+ /* For newsegment events return the running time of the start position */
+ if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
+ GstSegment new_segment = *segment;
+ gboolean update;
+ gdouble rate, applied_rate;
+ GstFormat format;
+ gint64 start, stop, position;
+
+ gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
+ &format, &start, &stop, &position);
+ if (format == GST_FORMAT_TIME) {
+ gst_segment_set_newsegment_full (&new_segment, update, rate,
+ applied_rate, format, start, stop, position);
+
+ time =
+ gst_segment_to_running_time (&new_segment, GST_FORMAT_TIME,
+ new_segment.start);
+ }
+ }
+ }
- 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);
+done:
+ return time;
+}
+
+static GstFlowReturn
+gst_single_queue_push_one (GstMultiQueue * mq, GstSingleQueue * sq,
+ GstMiniObject * object)
+{
+ GstFlowReturn result = GST_FLOW_OK;
+
+ if (GST_IS_BUFFER (object)) {
+ GstBuffer *buffer;
+ GstClockTime timestamp, duration;
+ GstCaps *caps;
+
+ buffer = GST_BUFFER_CAST (object);
+ timestamp = GST_BUFFER_TIMESTAMP (buffer);
+ duration = GST_BUFFER_DURATION (buffer);
+ caps = GST_BUFFER_CAPS (buffer);
+
+ apply_buffer (mq, sq, timestamp, duration, &sq->src_segment);
+
+ /* Applying the buffer may have made the queue non-full again, unblock it if needed */
+ gst_data_queue_limits_changed (sq->queue);
+
+ GST_DEBUG_OBJECT (mq,
+ "SingleQueue %d : Pushing buffer %p with ts %" GST_TIME_FORMAT,
+ sq->id, buffer, GST_TIME_ARGS (timestamp));
+
+ /* Set caps on pad before pushing, this avoids core calling the acceptcaps
+ * function on the srcpad, which will call acceptcaps upstream, which might
+ * not accept these caps (anymore). */
+ if (caps && caps != GST_PAD_CAPS (sq->srcpad))
+ gst_pad_set_caps (sq->srcpad, caps);
+
+ result = gst_pad_push (sq->srcpad, buffer);
+ } else if (GST_IS_EVENT (object)) {
+ GstEvent *event;
+
+ event = GST_EVENT_CAST (object);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_EOS:
+ result = GST_FLOW_UNEXPECTED;
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ apply_segment (mq, sq, event, &sq->src_segment);
+ /* Applying the segment may have made the queue non-full again, unblock it if needed */
+ gst_data_queue_limits_changed (sq->queue);
+ break;
+ default:
+ break;
}
- gst_pad_push_event (sq->srcpad, GST_EVENT (object));
+
+ GST_DEBUG_OBJECT (mq,
+ "SingleQueue %d : Pushing event %p of type %s",
+ sq->id, event, GST_EVENT_TYPE_NAME (event));
+
+ gst_pad_push_event (sq->srcpad, event);
} else {
g_warning ("Unexpected object in singlequeue %d (refcounting problem?)",
sq->id);
}
+ return result;
- return FALSE;
+ /* ERRORS */
+}
+
+static GstMiniObject *
+gst_multi_queue_item_steal_object (GstMultiQueueItem * item)
+{
+ GstMiniObject *res;
+
+ res = item->object;
+ item->object = NULL;
+
+ return res;
}
static void
gst_multi_queue_item_destroy (GstMultiQueueItem * item)
{
- gst_mini_object_unref (item->object);
- g_free (item);
+ if (item->object)
+ gst_mini_object_unref (item->object);
+ g_slice_free (GstMultiQueueItem, item);
}
+/* takes ownership of passed mini object! */
static GstMultiQueueItem *
-gst_multi_queue_item_new (GstMiniObject * object)
+gst_multi_queue_buffer_item_new (GstMiniObject * object, guint32 curid)
{
GstMultiQueueItem *item;
- item = g_new0 (GstMultiQueueItem, 1);
- item->object = gst_mini_object_ref (object);
+ item = g_slice_new (GstMultiQueueItem);
+ item->object = object;
item->destroy = (GDestroyNotify) gst_multi_queue_item_destroy;
+ item->posid = curid;
- 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;
- }
+ 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 GstMultiQueueItem *
+gst_multi_queue_event_item_new (GstMiniObject * object, guint32 curid)
+{
+ GstMultiQueueItem *item;
+
+ item = g_slice_new (GstMultiQueueItem);
+ item->object = object;
+ item->destroy = (GDestroyNotify) gst_multi_queue_item_destroy;
+ item->posid = curid;
+ item->size = 0;
+ item->duration = 0;
+ item->visible = FALSE;
return item;
}
+/* Each main loop attempts to push buffers until the return value
+ * is not-linked. not-linked pads are not allowed to push data beyond
+ * any linked pads, so they don't 'rush ahead of the pack'.
+ */
static void
gst_multi_queue_loop (GstPad * pad)
{
GstMultiQueueItem *item;
GstDataQueueItem *sitem;
GstMultiQueue *mq;
- GstMiniObject *object;
+ GstMiniObject *object = NULL;
guint32 newid;
- guint32 oldid = -1;
+ GstFlowReturn result;
+ GstClockTime next_time;
sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
- mq = (GstMultiQueue *) gst_pad_get_parent (pad);
+ mq = sq->mqueue;
-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)
+
+ if (sq->flushing)
+ goto out_flushing;
+
+ /* Get something from the queue, blocking until that happens, or we get
+ * flushed */
+ if (!(gst_data_queue_pop (sq->queue, &sitem)))
+ goto out_flushing;
+
+ item = (GstMultiQueueItem *) sitem;
+ newid = item->posid;
+
+ /* steal the object and destroy the item */
+ object = gst_multi_queue_item_steal_object (item);
+ gst_multi_queue_item_destroy (item);
+
+ /* Get running time of the item. Events will have GST_CLOCK_TIME_NONE */
+ next_time = get_running_time (&sq->src_segment, object, TRUE);
+
+ GST_LOG_OBJECT (mq, "SingleQueue %d : newid:%d , oldid:%d",
+ sq->id, newid, sq->last_oldid);
+
+ /* If we're not-linked, we do some extra work because we might need to
+ * wait before pushing. If we're linked but there's a gap in the IDs,
+ * or it's the first loop, or we just passed the previous highid,
+ * we might need to wake some sleeping pad up, so there's extra work
+ * there too */
+ if (sq->srcresult == GST_FLOW_NOT_LINKED
+ || (sq->last_oldid == G_MAXUINT32) || (newid != (sq->last_oldid + 1))
+ || sq->last_oldid > mq->highid) {
+ GST_LOG_OBJECT (mq, "CHECKING sq->srcresult: %s",
+ gst_flow_get_name (sq->srcresult));
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+
+ /* Check again if we're flushing after the lock is taken,
+ * the flush flag might have been changed in the meantime */
+ if (sq->flushing) {
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
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);
+ /* Update the nextid so other threads know when to wake us up */
+ sq->nextid = newid;
+ sq->next_time = next_time;
- /* 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);
+ /* Update the oldid (the last ID we output) for highid tracking */
+ if (sq->last_oldid != G_MAXUINT32)
+ sq->oldid = sq->last_oldid;
- GST_LOG_OBJECT (mq, "CHECKING sq->srcresult: %s",
- gst_flow_get_name (sq->srcresult));
+ if (sq->srcresult == GST_FLOW_NOT_LINKED) {
+ /* Go to sleep until it's time to push this buffer */
- /* 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;
+ /* Recompute the highid */
+ compute_high_id (mq);
+ /* Recompute the high time */
+ compute_high_time (mq);
- /* store the last id we outputted */
- if (oldid != -1)
- sq->oldid = oldid;
+ while (((mq->sync_by_running_time && next_time != GST_CLOCK_TIME_NONE &&
+ (mq->high_time == GST_CLOCK_TIME_NONE
+ || next_time >= mq->high_time))
+ || (!mq->sync_by_running_time && newid > mq->highid))
+ && sq->srcresult == GST_FLOW_NOT_LINKED) {
- /* 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);
+ GST_DEBUG_OBJECT (mq,
+ "queue %d sleeping for not-linked wakeup with "
+ "newid %u, highid %u, next_time %" GST_TIME_FORMAT
+ ", high_time %" GST_TIME_FORMAT, sq->id, newid, mq->highid,
+ GST_TIME_ARGS (next_time), GST_TIME_ARGS (mq->high_time));
+
+ /* Wake up all non-linked pads before we sleep */
+ 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);
+ mq->numwaiting++;
g_cond_wait (sq->turn, mq->qlock);
- }
+ mq->numwaiting--;
- GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+ if (sq->flushing) {
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+ goto out_flushing;
+ }
+
+ /* Recompute the high time */
+ compute_high_time (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_DEBUG_OBJECT (mq, "queue %d woken from sleeping for not-linked "
+ "wakeup with newid %u, highid %u, next_time %" GST_TIME_FORMAT
+ ", high_time %" GST_TIME_FORMAT, sq->id, newid, mq->highid,
+ GST_TIME_ARGS (next_time), GST_TIME_ARGS (mq->high_time));
}
+
+ /* Re-compute the high_id in case someone else pushed */
+ compute_high_id (mq);
+ } else {
+ compute_high_id (mq);
+ /* Wake up all non-linked pads */
+ wake_up_next_non_linked (mq);
}
+ /* We're done waiting, we can clear the nextid and nexttime */
+ sq->nextid = 0;
+ sq->next_time = GST_CLOCK_TIME_NONE;
- GST_LOG_OBJECT (mq, "BEFORE PUSHING sq->srcresult: %s",
- gst_flow_get_name (sq->srcresult));
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+ }
- /* 4. Try to push out the new object */
- gst_single_queue_push_one (mq, sq, object);
+ if (sq->flushing)
+ goto out_flushing;
- GST_LOG_OBJECT (mq, "AFTER PUSHING sq->srcresult: %s",
- gst_flow_get_name (sq->srcresult));
+ GST_LOG_OBJECT (mq, "BEFORE 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;
+ /* Update time stats */
+ next_time = get_running_time (&sq->src_segment, object, FALSE);
+ if (next_time != GST_CLOCK_TIME_NONE) {
+ if (sq->last_time == GST_CLOCK_TIME_NONE || sq->last_time < next_time)
+ sq->last_time = next_time;
+ if (mq->high_time == GST_CLOCK_TIME_NONE || mq->high_time <= next_time) {
+ /* Wake up all non-linked pads now that we advanced the high time */
+ mq->high_time = next_time;
+ wake_up_next_non_linked (mq);
+ }
}
+ /* Try to push out the new object */
+ result = gst_single_queue_push_one (mq, sq, object);
+ sq->srcresult = result;
+ object = NULL;
+
+ if (result != GST_FLOW_OK && result != GST_FLOW_NOT_LINKED
+ && result != GST_FLOW_UNEXPECTED)
+ goto out_flushing;
+
+ GST_LOG_OBJECT (mq, "AFTER PUSHING sq->srcresult: %s",
+ gst_flow_get_name (sq->srcresult));
+
+ sq->last_oldid = newid;
-beach:
- gst_object_unref (mq);
return;
out_flushing:
{
+ if (object)
+ gst_mini_object_unref (object);
+
+ /* Need to make sure wake up any sleeping pads when we exit */
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ compute_high_id (mq);
+ wake_up_next_non_linked (mq);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
+ /* upstream needs to see fatal result ASAP to shut things down,
+ * but might be stuck in one of our other full queues;
+ * so empty this one and trigger dynamic queue growth. At
+ * this point the srcresult is not OK, NOT_LINKED
+ * or UNEXPECTED, i.e. a real failure */
+ gst_data_queue_flush (sq->queue);
+ single_queue_underrun_cb (sq->queue, sq);
+ gst_data_queue_set_flushing (sq->queue, TRUE);
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;
+ return;
}
}
-
/**
* gst_multi_queue_chain:
*
* This is similar to GstQueue's chain function, except:
- * _ we don't have leak behavioures,
+ * _ we don't have leak behaviours,
* _ 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;
+ GstClockTime timestamp, duration;
sq = gst_pad_get_element_private (pad);
- mq = (GstMultiQueue *) gst_pad_get_parent (pad);
+ mq = sq->mqueue;
- /* Get an unique incrementing id */
- GST_MULTI_QUEUE_MUTEX_LOCK (mq);
- curid = mq->counter++;
- GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+ /* if eos, we are always full, so avoid hanging incoming indefinitely */
+ if (sq->is_eos)
+ goto was_eos;
- GST_LOG_OBJECT (mq, "SingleQueue %d : about to push buffer with id %d",
- sq->id, curid);
+ /* Get a unique incrementing id */
+ curid = G_ATOMIC_INT_ADD ((gint *) & mq->counter, 1);
- item = gst_multi_queue_item_new ((GstMiniObject *) buffer);
- item->posid = curid;
+ GST_LOG_OBJECT (mq, "SingleQueue %d : about to enqueue buffer %p with id %d",
+ sq->id, buffer, curid);
- if (!(gst_data_queue_push (sq->queue, (GstDataQueueItem *) item))) {
+ item = gst_multi_queue_buffer_item_new (GST_MINI_OBJECT_CAST (buffer), curid);
+
+ timestamp = GST_BUFFER_TIMESTAMP (buffer);
+ duration = GST_BUFFER_DURATION (buffer);
+
+ if (!(gst_data_queue_push (sq->queue, (GstDataQueueItem *) item)))
+ goto flushing;
+
+ /* update time level, we must do this after pushing the data in the queue so
+ * that we never end up filling the queue first. */
+ apply_buffer (mq, sq, timestamp, duration, &sq->sink_segment);
+
+done:
+ return sq->srcresult;
+
+ /* ERRORS */
+flushing:
+ {
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);
+ goto done;
+ }
+was_eos:
+ {
+ GST_DEBUG_OBJECT (mq, "we are EOS, dropping buffer, return UNEXPECTED");
gst_buffer_unref (buffer);
- ret = sq->srcresult;
+ return GST_FLOW_UNEXPECTED;
}
-
- gst_object_unref (mq);
- return ret;
}
static gboolean
sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
- if (active)
+ if (active) {
+ /* All pads start off linked until they push one buffer */
sq->srcresult = GST_FLOW_OK;
- else {
+ } else {
sq->srcresult = GST_FLOW_WRONG_STATE;
gst_data_queue_flush (sq->queue);
}
-
return TRUE;
}
GstMultiQueue *mq;
guint32 curid;
GstMultiQueueItem *item;
+ gboolean res;
+ GstEventType type;
+ GstEvent *sref = NULL;
sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
mq = (GstMultiQueue *) gst_pad_get_parent (pad);
- switch (GST_EVENT_TYPE (event)) {
+ type = GST_EVENT_TYPE (event);
+
+ switch (type) {
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);
+ res = gst_pad_push_event (sq->srcpad, event);
- gst_pad_pause_task (sq->srcpad);
+ gst_single_queue_flush (mq, sq, TRUE);
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;
+ res = gst_pad_push_event (sq->srcpad, event);
- GST_DEBUG_OBJECT (mq, "SingleQueue %d : restarting task", sq->id);
- gst_pad_start_task (sq->srcpad, (GstTaskFunction) gst_multi_queue_loop,
- sq->srcpad);
+ gst_single_queue_flush (mq, sq, FALSE);
goto done;
+ case GST_EVENT_NEWSEGMENT:
+ /* take ref because the queue will take ownership and we need the event
+ * afterwards to update the segment */
+ sref = gst_event_ref (event);
+ break;
default:
if (!(GST_EVENT_IS_SERIALIZED (event))) {
- gst_pad_push_event (sq->srcpad, event);
+ res = 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);
+ /* if eos, we are always full, so avoid hanging incoming indefinitely */
+ if (sq->is_eos)
+ goto was_eos;
- item = gst_multi_queue_item_new ((GstMiniObject *) event);
- item->posid = curid;
+ /* Get an unique incrementing id. */
+ curid = G_ATOMIC_INT_ADD ((gint *) & mq->counter, 1);
+
+ item = gst_multi_queue_event_item_new ((GstMiniObject *) event, 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);
+ "SingleQueue %d : Enqueuing event %p of type %s with id %d",
+ sq->id, event, GST_EVENT_TYPE_NAME (event), curid);
+
+ if (!(res = gst_data_queue_push (sq->queue, (GstDataQueueItem *) item)))
+ goto flushing;
+
+ /* mark EOS when we received one, we must do that after putting the
+ * buffer in the queue because EOS marks the buffer as filled. No need to take
+ * a lock, the _check_full happens from this thread only, right before pushing
+ * into dataqueue. */
+ switch (type) {
+ case GST_EVENT_EOS:
+ sq->is_eos = TRUE;
+ /* EOS affects the buffering state */
+ update_buffering (mq, sq);
+ single_queue_overrun_cb (sq->queue, sq);
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ apply_segment (mq, sq, sref, &sq->sink_segment);
+ gst_event_unref (sref);
+ break;
+ default:
+ break;
+ }
+done:
+ gst_object_unref (mq);
+ return res;
- if (!(gst_data_queue_push (sq->queue, (GstDataQueueItem *) item))) {
+flushing:
+ {
GST_LOG_OBJECT (mq, "SingleQueue %d : exit because task paused, reason: %s",
sq->id, gst_flow_get_name (sq->srcresult));
+ if (sref)
+ gst_event_unref (sref);
gst_multi_queue_item_destroy (item);
+ goto done;
+ }
+was_eos:
+ {
+ GST_DEBUG_OBJECT (mq, "we are EOS, dropping event, return FALSE");
gst_event_unref (event);
+ res = FALSE;
+ goto done;
}
-
-done:
- gst_object_unref (mq);
- return TRUE;
}
static GstCaps *
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");
return result;
}
+static gboolean
+gst_multi_queue_acceptcaps (GstPad * pad, GstCaps * caps)
+{
+ GstSingleQueue *sq = gst_pad_get_element_private (pad);
+ GstPad *otherpad;
+ gboolean result;
+
+ otherpad = (pad == sq->srcpad) ? sq->sinkpad : sq->srcpad;
+
+ GST_LOG_OBJECT (otherpad, "Accept caps from the peer of this pad");
+
+ result = gst_pad_peer_accept_caps (otherpad, caps);
+
+ return result;
+}
+
static GstFlowReturn
gst_multi_queue_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
gboolean result = FALSE;
sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
- mq = (GstMultiQueue *) gst_pad_get_parent (pad);
+ mq = sq->mqueue;
- GST_LOG ("SingleQueue %d", sq->id);
+ GST_DEBUG_OBJECT (mq, "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);
+ result = gst_single_queue_flush (mq, sq, FALSE);
} 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);
+ result = gst_single_queue_flush (mq, sq, TRUE);
+ /* make sure streaming finishes */
+ result |= gst_pad_stop_task (pad);
}
-
- 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)
{
GstPad *peerpad;
gboolean res;
- /* FILLME */
- /* Handle position offset depending on queue size */
+ /* FIXME, Handle position offset depending on queue size */
/* default handling */
if (!(peerpad = gst_pad_get_peer (sq->sinkpad)))
return res;
+ /* ERRORS */
no_peer:
{
GST_LOG_OBJECT (sq->sinkpad, "Couldn't send query because we have no peer");
}
}
-
/*
* Next-non-linked functions
*/
{
GList *tmp;
- GST_LOG ("mq->nextnotlinked:%d", mq->nextnotlinked);
-
/* maybe no-one is waiting */
- if (mq->nextnotlinked == -1)
+ if (mq->numwaiting < 1)
return;
- /* Else figure out which singlequeue it is and wake it up */
+ /* Else figure out which singlequeue(s) need waking 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) {
+ if (sq->srcresult == GST_FLOW_NOT_LINKED) {
+ if ((mq->sync_by_running_time && mq->high_time != GST_CLOCK_TIME_NONE
+ && sq->next_time != GST_CLOCK_TIME_NONE
+ && sq->next_time >= mq->high_time)
+ || (sq->nextid != 0 && sq->nextid <= mq->highid)) {
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)
+compute_high_id (GstMultiQueue * mq)
{
+ /* The high-id is either the highest id among the linked pads, or if all
+ * pads are not-linked, it's the lowest not-linked pad */
GList *tmp;
guint32 lowest = G_MAXUINT32;
- gint nextid = -1;
+ guint32 highid = G_MAXUINT32;
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",
+ GST_LOG_OBJECT (mq, "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) {
+ if (sq->srcresult == GST_FLOW_NOT_LINKED) {
+ /* No need to consider queues which are not waiting */
+ if (sq->nextid == 0) {
+ GST_LOG_OBJECT (mq, "sq:%d is not waiting - ignoring", sq->id);
+ continue;
+ }
+
+ if (sq->nextid < lowest)
lowest = sq->nextid;
- nextid = sq->id;
+ } else if (sq->srcresult != GST_FLOW_UNEXPECTED) {
+ /* 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,
+ * unless the singlequeue is at EOS (srcresult = UNEXPECTED) */
+ if ((highid == G_MAXUINT32) || (sq->oldid > highid))
+ highid = sq->oldid;
+ }
+ }
+
+ if (highid == G_MAXUINT32 || lowest < highid)
+ mq->highid = lowest;
+ else
+ mq->highid = highid;
+
+ GST_LOG_OBJECT (mq, "Highid is now : %u, lowest non-linked %u", mq->highid,
+ lowest);
+}
+
+/* WITH LOCK TAKEN */
+static void
+compute_high_time (GstMultiQueue * mq)
+{
+ /* The high-id is either the highest id among the linked pads, or if all
+ * pads are not-linked, it's the lowest not-linked pad */
+ GList *tmp;
+ GstClockTime highest = GST_CLOCK_TIME_NONE;
+ GstClockTime lowest = GST_CLOCK_TIME_NONE;
+
+ for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
+ GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
+
+ GST_LOG_OBJECT (mq,
+ "inspecting sq:%d , next_time:%" GST_TIME_FORMAT ", last_time:%"
+ GST_TIME_FORMAT ", srcresult:%s", sq->id, GST_TIME_ARGS (sq->next_time),
+ GST_TIME_ARGS (sq->last_time), gst_flow_get_name (sq->srcresult));
+
+ if (sq->srcresult == GST_FLOW_NOT_LINKED) {
+ /* No need to consider queues which are not waiting */
+ if (sq->next_time == GST_CLOCK_TIME_NONE) {
+ GST_LOG_OBJECT (mq, "sq:%d is not waiting - ignoring", sq->id);
+ continue;
}
- /* 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;
+ if (lowest == GST_CLOCK_TIME_NONE || sq->next_time < lowest)
+ lowest = sq->next_time;
+ } else if (sq->srcresult != GST_FLOW_UNEXPECTED) {
+ /* 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,
+ * unless the singlequeue is at EOS (srcresult = UNEXPECTED) */
+ if (highest == GST_CLOCK_TIME_NONE || sq->last_time > highest)
+ highest = sq->last_time;
+ }
}
- mq->nextnotlinked = nextid;
+ mq->high_time = highest;
+
GST_LOG_OBJECT (mq,
- "Next-non-linked is sq #%d with nextid : %d. Highid is now : %d", nextid,
- lowest, mq->highid);
+ "High time is now : %" GST_TIME_FORMAT ", lowest non-linked %"
+ GST_TIME_FORMAT, GST_TIME_ARGS (mq->high_time), GST_TIME_ARGS (lowest));
}
+#define IS_FILLED(q, format, value) (((q)->max_size.format) != 0 && \
+ ((q)->max_size.format) <= (value))
+
/*
* GstSingleQueue functions
*/
-
static void
-single_queue_overrun_cb (GstSingleQueue * sq, GstMultiQueue * mq)
+single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
{
+ GstMultiQueue *mq = sq->mqueue;
+ GList *tmp;
+ GstDataQueueSize size;
+ gboolean filled = FALSE;
+
+ gst_data_queue_get_level (sq->queue, &size);
+
GST_LOG_OBJECT (mq, "Single Queue %d is full", sq->id);
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mq);
+ for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
+ GstSingleQueue *oq = (GstSingleQueue *) tmp->data;
+ GstDataQueueSize ssize;
+
+ GST_LOG_OBJECT (mq, "Checking Queue %d", oq->id);
+
+ if (gst_data_queue_is_empty (oq->queue)) {
+ GST_LOG_OBJECT (mq, "Queue %d is empty", oq->id);
+ if (IS_FILLED (sq, visible, size.visible)) {
+ sq->max_size.visible = size.visible + 1;
+ GST_DEBUG_OBJECT (mq,
+ "Another queue is empty, bumping single queue %d max visible to %d",
+ sq->id, sq->max_size.visible);
+ }
+ }
+ /* check if we reached the hard time/bytes limits */
+ gst_data_queue_get_level (oq->queue, &ssize);
+
+ GST_DEBUG_OBJECT (mq,
+ "queue %d: visible %u/%u, bytes %u/%u, time %" G_GUINT64_FORMAT "/%"
+ G_GUINT64_FORMAT, oq->id, ssize.visible, oq->max_size.visible,
+ ssize.bytes, oq->max_size.bytes, oq->cur_time, oq->max_size.time);
+
+ /* if this queue is filled completely we must signal overrun.
+ * FIXME, this seems wrong in many ways
+ * - we're comparing the filled level of this queue against the
+ * values of the other one
+ * - we should only do this after we found no empty queues, ie, move
+ * this check outside of the loop
+ * - the debug statement talks about a different queue than the one
+ * we are checking here.
+ */
+ if (sq->is_eos || IS_FILLED (sq, bytes, ssize.bytes) ||
+ IS_FILLED (sq, time, sq->cur_time)) {
+ GST_LOG_OBJECT (mq, "Queue %d is filled", oq->id);
+ filled = TRUE;
+ }
+ }
+ /* no queues were empty */
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
+
/* Overrun is always forwarded, since this is blocking the upstream element */
- g_signal_emit (G_OBJECT (mq), gst_multi_queue_signals[SIGNAL_OVERRUN], 0);
+ if (filled) {
+ GST_DEBUG_OBJECT (mq, "A queue is filled, signalling overrun");
+ g_signal_emit (mq, gst_multi_queue_signals[SIGNAL_OVERRUN], 0);
+ }
+
+ return;
}
static void
-single_queue_underrun_cb (GstSingleQueue * sq, GstMultiQueue * mq)
+single_queue_underrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
{
gboolean empty = TRUE;
+ GstMultiQueue *mq = sq->mqueue;
GList *tmp;
GST_LOG_OBJECT (mq,
- "Single Queue %d is empty, Checking if all single queues are empty",
- sq->id);
+ "Single Queue %d is empty, Checking other single queues", 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;
+ GstSingleQueue *oq = (GstSingleQueue *) tmp->data;
+
+ if (gst_data_queue_is_full (oq->queue)) {
+ GstDataQueueSize size;
+
+ gst_data_queue_get_level (oq->queue, &size);
+ if (IS_FILLED (oq, visible, size.visible)) {
+ oq->max_size.visible = size.visible + 1;
+ GST_DEBUG_OBJECT (mq,
+ "queue %d is filled, bumping its max visible to %d", oq->id,
+ oq->max_size.visible);
+ gst_data_queue_limits_changed (oq->queue);
+ }
}
+ if (!gst_data_queue_is_empty (oq->queue))
+ empty = FALSE;
}
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);
+ g_signal_emit (mq, gst_multi_queue_signals[SIGNAL_UNDERRUN], 0);
}
}
guint64 time, GstSingleQueue * sq)
{
gboolean res;
+ GstMultiQueue *mq = sq->mqueue;
- 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));
+ GST_DEBUG_OBJECT (mq,
+ "queue %d: visible %u/%u, bytes %u/%u, time %" G_GUINT64_FORMAT "/%"
+ G_GUINT64_FORMAT, sq->id, visible, sq->max_size.visible, bytes,
+ sq->max_size.bytes, sq->cur_time, sq->max_size.time);
+
+ /* we are always filled on EOS */
+ if (sq->is_eos)
+ return TRUE;
+
+ /* we never go past the max visible items unless we are in buffering mode */
+ if (!mq->use_buffering && IS_FILLED (sq, visible, visible))
+ return TRUE;
+
+ /* check time or bytes */
+ res = IS_FILLED (sq, time, sq->cur_time) || IS_FILLED (sq, bytes, bytes);
return res;
}
+static void
+gst_single_queue_free (GstSingleQueue * sq)
+{
+ /* DRAIN QUEUE */
+ gst_data_queue_flush (sq->queue);
+ g_object_unref (sq->queue);
+ g_cond_free (sq->turn);
+ g_free (sq);
+}
+
static GstSingleQueue *
-gst_single_queue_new (GstMultiQueue * mqueue)
+gst_single_queue_new (GstMultiQueue * mqueue, gint id)
{
GstSingleQueue *sq;
- gchar *tmp;
+ gchar *name;
+ GList *tmp;
+ gint temp_id = (id == -1) ? 0 : id;
+
+ GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
+
+ /* Find an unused queue ID, if possible the passed one */
+ for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
+ GstSingleQueue *sq2 = (GstSingleQueue *) tmp->data;
+ /* This works because the IDs are sorted in ascending order */
+ if (sq2->id == temp_id) {
+ /* If this ID was requested by the caller return NULL,
+ * otherwise just get us the next one */
+ if (id == -1)
+ temp_id = sq2->id + 1;
+ else
+ return NULL;
+ } else if (sq2->id > temp_id) {
+ break;
+ }
+ }
sq = g_new0 (GstSingleQueue, 1);
+ mqueue->nbqueues++;
+ sq->id = temp_id;
- GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
- sq->id = mqueue->nbqueues++;
+ mqueue->queues = g_list_insert_before (mqueue->queues, tmp, sq);
+ mqueue->queues_cookie++;
/* 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.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->srcresult = GST_FLOW_WRONG_STATE;
+ sq->queue = gst_data_queue_new_full ((GstDataQueueCheckFullFunction)
+ single_queue_check_full,
+ (GstDataQueueFullCallback) single_queue_overrun_cb,
+ (GstDataQueueEmptyCallback) single_queue_underrun_cb, sq);
+ sq->is_eos = FALSE;
+ sq->flushing = FALSE;
+ gst_segment_init (&sq->sink_segment, GST_FORMAT_TIME);
+ gst_segment_init (&sq->src_segment, GST_FORMAT_TIME);
+
+ sq->nextid = 0;
+ sq->oldid = 0;
+ sq->next_time = GST_CLOCK_TIME_NONE;
+ sq->last_time = GST_CLOCK_TIME_NONE;
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);
+ sq->sinktime = GST_CLOCK_TIME_NONE;
+ sq->srctime = GST_CLOCK_TIME_NONE;
+ sq->sink_tainted = TRUE;
+ sq->src_tainted = TRUE;
- 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);
+ name = g_strdup_printf ("sink%d", sq->id);
+ sq->sinkpad = gst_pad_new_from_static_template (&sinktemplate, name);
+ g_free (name);
gst_pad_set_chain_function (sq->sinkpad,
GST_DEBUG_FUNCPTR (gst_multi_queue_chain));
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_acceptcaps_function (sq->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_acceptcaps));
gst_pad_set_bufferalloc_function (sq->sinkpad,
GST_DEBUG_FUNCPTR (gst_multi_queue_bufferalloc));
+ gst_pad_set_iterate_internal_links_function (sq->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_iterate_internal_links));
- tmp = g_strdup_printf ("src%d", sq->id);
- sq->srcpad = gst_pad_new_from_static_template (&srctemplate, tmp);
- g_free (tmp);
+ name = g_strdup_printf ("src%d", sq->id);
+ sq->srcpad = gst_pad_new_from_static_template (&srctemplate, name);
+ g_free (name);
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_acceptcaps_function (sq->srcpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_acceptcaps));
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_iterate_internal_links_function (sq->srcpad,
+ GST_DEBUG_FUNCPTR (gst_multi_queue_iterate_internal_links));
gst_pad_set_element_private (sq->sinkpad, (gpointer) sq);
gst_pad_set_element_private (sq->srcpad, (gpointer) sq);
- gst_pad_set_active (sq->sinkpad, TRUE);
- gst_element_add_pad (GST_ELEMENT (mqueue), sq->sinkpad);
+ GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
- GST_OBJECT_FLAG_UNSET (sq->srcpad, GST_PAD_FLUSHING);
+ /* only activate the pads when we are not in the NULL state
+ * and add the pad under the state_lock to prevend state changes
+ * between activating and adding */
+ g_static_rec_mutex_lock (GST_STATE_GET_LOCK (mqueue));
+ if (GST_STATE_TARGET (mqueue) != GST_STATE_NULL) {
+ gst_pad_set_active (sq->srcpad, TRUE);
+ gst_pad_set_active (sq->sinkpad, TRUE);
+ }
gst_element_add_pad (GST_ELEMENT (mqueue), sq->srcpad);
-
- gst_pad_set_active (sq->srcpad, TRUE);
- gst_pad_set_active (sq->sinkpad, TRUE);
+ gst_element_add_pad (GST_ELEMENT (mqueue), sq->sinkpad);
+ g_static_rec_mutex_unlock (GST_STATE_GET_LOCK (mqueue));
GST_DEBUG_OBJECT (mqueue, "GstSingleQueue [%d] created and pads added",
sq->id);