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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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1047 lines
30 KiB
C
1047 lines
30 KiB
C
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/* GStreamer
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* Copyright (C) 2006 Edward Hervey <edward@fluendo.com>
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*
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* gstmultiqueue.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gst/gst.h>
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#include "gstmultiqueue.h"
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/**
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* GstSingleQueue:
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* @sinkpad: associated sink #GstPad
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* @srcpad: associated source #GstPad
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*
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* Structure containing all information and properties about
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* a single queue.
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*/
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typedef struct _GstSingleQueue GstSingleQueue;
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struct _GstSingleQueue
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{
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/* unique identifier of the queue */
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guint id;
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GstMultiQueue *mqueue;
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GstPad *sinkpad;
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GstPad *srcpad;
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/* flowreturn of previous srcpad push */
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GstFlowReturn srcresult;
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/* queue of data */
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GstDataQueue *queue;
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GstDataQueueSize max_size, extra_size;
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/* Protected by global lock */
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guint32 nextid; /* ID of the next object waiting to be pushed */
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guint32 oldid; /* ID of the last object pushed (last in a series) */
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GCond *turn; /* SingleQueue turn waiting conditional */
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};
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/* Extension of GstDataQueueItem structure for our usage */
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typedef struct _GstMultiQueueItem GstMultiQueueItem;
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struct _GstMultiQueueItem
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{
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GstMiniObject *object;
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guint size;
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guint64 duration;
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gboolean visible;
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GDestroyNotify destroy;
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guint32 posid;
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};
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static GstSingleQueue *gst_single_queue_new (GstMultiQueue * mqueue);
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static void wake_up_next_non_linked (GstMultiQueue * mq);
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static void compute_next_non_linked (GstMultiQueue * mq);
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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src%d",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (multi_queue_debug);
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#define GST_CAT_DEFAULT (multi_queue_debug)
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static const GstElementDetails gst_multi_queue_details =
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GST_ELEMENT_DETAILS ("MultiQueue",
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"Generic",
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"Multiple data queue",
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"Edward Hervey <edward@fluendo.com>");
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#define DEFAULT_MAX_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
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#define DEFAULT_MAX_SIZE_BUFFERS 200
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#define DEFAULT_MAX_SIZE_TIME GST_SECOND
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#define DEFAULT_EXTRA_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
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#define DEFAULT_EXTRA_SIZE_BUFFERS 200
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#define DEFAULT_EXTRA_SIZE_TIME GST_SECOND
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/* Signals and args */
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enum
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{
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SIGNAL_UNDERRUN,
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SIGNAL_OVERRUN,
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_EXTRA_SIZE_BYTES,
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ARG_EXTRA_SIZE_BUFFERS,
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ARG_EXTRA_SIZE_TIME,
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ARG_MAX_SIZE_BYTES,
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ARG_MAX_SIZE_BUFFERS,
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ARG_MAX_SIZE_TIME,
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};
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#define GST_MULTI_QUEUE_MUTEX_LOCK(q) G_STMT_START { \
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GST_CAT_LOG_OBJECT (multi_queue_debug, q, \
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"locking qlock from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (q->qlock); \
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GST_CAT_LOG_OBJECT (multi_queue_debug, q, \
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"locked qlock from thread %p", \
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g_thread_self ()); \
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} G_STMT_END
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#define GST_MULTI_QUEUE_MUTEX_UNLOCK(q) G_STMT_START { \
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GST_CAT_LOG_OBJECT (multi_queue_debug, q, \
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"unlocking qlock from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (q->qlock); \
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} G_STMT_END
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static void gst_multi_queue_finalize (GObject * object);
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static void gst_multi_queue_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_multi_queue_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstPad *gst_multi_queue_request_new_pad (GstElement * element,
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GstPadTemplate * temp, const gchar * name);
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static void gst_multi_queue_release_pad (GstElement * element, GstPad * pad);
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#define _do_init(bla) \
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GST_DEBUG_CATEGORY_INIT (multi_queue_debug, "multiqueue", 0, "multiqueue element");
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GST_BOILERPLATE_FULL (GstMultiQueue, gst_multi_queue, GstElement,
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GST_TYPE_ELEMENT, _do_init);
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static guint gst_multi_queue_signals[LAST_SIGNAL] = { 0 };
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static void
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gst_multi_queue_base_init (gpointer g_class)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sinktemplate));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&srctemplate));
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gst_element_class_set_details (gstelement_class, &gst_multi_queue_details);
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}
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static void
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gst_multi_queue_class_init (GstMultiQueueClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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gobject_class->set_property =
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GST_DEBUG_FUNCPTR (gst_multi_queue_set_property);
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gobject_class->get_property =
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GST_DEBUG_FUNCPTR (gst_multi_queue_get_property);
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/* SIGNALS */
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gst_multi_queue_signals[SIGNAL_UNDERRUN] =
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g_signal_new ("underrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GstMultiQueueClass, underrun), NULL, NULL,
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g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
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gst_multi_queue_signals[SIGNAL_OVERRUN] =
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g_signal_new ("overrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GstMultiQueueClass, overrun), NULL, NULL,
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g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
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/* PROPERTIES */
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g_object_class_install_property (gobject_class, ARG_MAX_SIZE_BYTES,
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g_param_spec_uint ("max-size-bytes", "Max. size (kB)",
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"Max. amount of data in the queue (bytes, 0=disable)",
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0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_MAX_SIZE_BUFFERS,
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g_param_spec_uint ("max-size-buffers", "Max. size (buffers)",
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"Max. number of buffers in the queue (0=disable)",
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0, G_MAXUINT, DEFAULT_MAX_SIZE_BUFFERS, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_MAX_SIZE_TIME,
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g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
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"Max. amount of data in the queue (in ns, 0=disable)",
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0, G_MAXUINT64, DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_EXTRA_SIZE_BYTES,
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g_param_spec_uint ("extra-size-bytes", "Extra Size (kB)",
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"Amount of data the queues can grow if one of them is empty (bytes, 0=disable)",
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0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BYTES, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_EXTRA_SIZE_BUFFERS,
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g_param_spec_uint ("extra-size-buffers", "Extra Size (buffers)",
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"Amount of buffers the queues can grow if one of them is empty (0=disable)",
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0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BUFFERS, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_EXTRA_SIZE_TIME,
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g_param_spec_uint64 ("extra-size-time", "Extra Size (ns)",
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"Amount of time the queues can grow if one of them is empty (in ns, 0=disable)",
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0, G_MAXUINT64, DEFAULT_EXTRA_SIZE_TIME, G_PARAM_READWRITE));
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_multi_queue_finalize);
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gstelement_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_multi_queue_request_new_pad);
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gstelement_class->release_pad =
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GST_DEBUG_FUNCPTR (gst_multi_queue_release_pad);
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}
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static void
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gst_multi_queue_init (GstMultiQueue * mqueue, GstMultiQueueClass * klass)
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{
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mqueue->nbqueues = 0;
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mqueue->queues = NULL;
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mqueue->max_size.bytes = DEFAULT_MAX_SIZE_BYTES;
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mqueue->max_size.visible = DEFAULT_MAX_SIZE_BUFFERS;
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mqueue->max_size.time = DEFAULT_MAX_SIZE_TIME;
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mqueue->extra_size.bytes = DEFAULT_EXTRA_SIZE_BYTES;
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mqueue->extra_size.visible = DEFAULT_EXTRA_SIZE_BUFFERS;
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mqueue->extra_size.time = DEFAULT_EXTRA_SIZE_TIME;
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mqueue->counter = 0;
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mqueue->highid = -1;
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mqueue->nextnotlinked = -1;
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mqueue->qlock = g_mutex_new ();
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/* FILLME ? */
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}
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static void
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gst_multi_queue_finalize (GObject * object)
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{
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GstMultiQueue *mqueue = GST_MULTI_QUEUE (object);
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GList *tmp = mqueue->queues;
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/* FILLME ? */
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/* DRAIN QUEUES */
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while (tmp) {
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GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
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gst_data_queue_flush (sq->queue);
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g_object_unref (G_OBJECT (sq->queue));
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tmp = g_list_next (tmp);
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}
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g_list_free (mqueue->queues);
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/* free/unref instance data */
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g_mutex_free (mqueue->qlock);
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if (G_OBJECT_CLASS (parent_class)->finalize)
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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#define SET_CHILD_PROPERTY(mq,name,value) G_STMT_START { \
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GList * tmp = mq->queues; \
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while (tmp) { \
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GstSingleQueue *q = (GstSingleQueue*)tmp->data; \
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g_object_set_property ((GObject*) q->queue, name, value); \
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tmp = g_list_next(tmp); \
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}; \
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} G_STMT_END
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static void
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gst_multi_queue_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstMultiQueue *mq = GST_MULTI_QUEUE (object);
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switch (prop_id) {
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case ARG_MAX_SIZE_BYTES:
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mq->max_size.bytes = g_value_get_uint (value);
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SET_CHILD_PROPERTY (mq, "max-size-bytes", value);
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break;
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case ARG_MAX_SIZE_BUFFERS:
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mq->max_size.visible = g_value_get_uint (value);
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SET_CHILD_PROPERTY (mq, "max-size-visible", value);
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break;
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case ARG_MAX_SIZE_TIME:
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mq->max_size.time = g_value_get_uint64 (value);
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SET_CHILD_PROPERTY (mq, "max-size-time", value);
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break;
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case ARG_EXTRA_SIZE_BYTES:
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mq->extra_size.bytes = g_value_get_uint (value);
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break;
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case ARG_EXTRA_SIZE_BUFFERS:
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mq->extra_size.visible = g_value_get_uint (value);
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break;
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case ARG_EXTRA_SIZE_TIME:
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mq->extra_size.time = g_value_get_uint64 (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_multi_queue_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstMultiQueue *mq = GST_MULTI_QUEUE (object);
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GST_MULTI_QUEUE_MUTEX_LOCK (mq);
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switch (prop_id) {
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case ARG_EXTRA_SIZE_BYTES:
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g_value_set_uint (value, mq->extra_size.bytes);
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break;
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case ARG_EXTRA_SIZE_BUFFERS:
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g_value_set_uint (value, mq->extra_size.visible);
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break;
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case ARG_EXTRA_SIZE_TIME:
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g_value_set_uint64 (value, mq->extra_size.time);
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break;
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case ARG_MAX_SIZE_BYTES:
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g_value_set_uint (value, mq->max_size.bytes);
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break;
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case ARG_MAX_SIZE_BUFFERS:
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g_value_set_uint (value, mq->max_size.visible);
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break;
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case ARG_MAX_SIZE_TIME:
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g_value_set_uint64 (value, mq->max_size.time);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
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}
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/*
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* GstElement methods
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*/
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|
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static GstPad *
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gst_multi_queue_request_new_pad (GstElement * element, GstPadTemplate * temp,
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const gchar * name)
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{
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GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
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GstSingleQueue *squeue;
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GST_LOG_OBJECT (element, "name : %s", name);
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/* Create a new single queue, add the sink and source pad and return the sink pad */
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squeue = gst_single_queue_new (mqueue);
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GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
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mqueue->queues = g_list_append (mqueue->queues, squeue);
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GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
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GST_DEBUG_OBJECT (mqueue, "Returning pad %s:%s",
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GST_DEBUG_PAD_NAME (squeue->sinkpad));
|
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|
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return squeue->sinkpad;
|
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}
|
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|
||
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static void
|
||
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gst_multi_queue_release_pad (GstElement * element, GstPad * pad)
|
||
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{
|
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GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
|
||
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GstSingleQueue *sq = NULL;
|
||
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GList *tmp;
|
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|
||
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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;
|
||
|
}
|