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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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By passing NULL to `g_signal_new` instead of a marshaller, GLib will actually internally optimize the signal (if the marshaller is available in GLib itself) by also setting the valist marshaller. This makes the signal emission a bit more performant than the regular marshalling, which still needs to box into `GValue` and call libffi in case of a generic marshaller. Note that for custom marshallers, one would use `g_signal_set_va_marshaller()` with the valist marshaller instead.
3462 lines
98 KiB
C
3462 lines
98 KiB
C
/* GStreamer aggregator base class
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* Copyright (C) 2014 Mathieu Duponchelle <mathieu.duponchelle@opencreed.com>
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* Copyright (C) 2014 Thibault Saunier <tsaunier@gnome.org>
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*
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* gstaggregator.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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION: gstaggregator
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* @title: GstAggregator
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* @short_description: Base class for mixers and muxers, manages a set of input
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* pads and aggregates their streams
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* @see_also: gstcollectpads for historical reasons.
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*
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* Manages a set of pads with the purpose of aggregating their buffers.
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* Control is given to the subclass when all pads have data.
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*
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* * Base class for mixers and muxers. Subclasses should at least implement
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* the #GstAggregatorClass.aggregate() virtual method.
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*
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* * Installs a #GstPadChainFunction, a #GstPadEventFullFunction and a
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* #GstPadQueryFunction to queue all serialized data packets per sink pad.
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* Subclasses should not overwrite those, but instead implement
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* #GstAggregatorClass.sink_event() and #GstAggregatorClass.sink_query() as
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* needed.
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*
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* * When data is queued on all pads, the aggregate vmethod is called.
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*
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* * One can peek at the data on any given GstAggregatorPad with the
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* gst_aggregator_pad_peek_buffer () method, and remove it from the pad
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* with the gst_aggregator_pad_pop_buffer () method. When a buffer
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* has been taken with pop_buffer (), a new buffer can be queued
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* on that pad.
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*
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* * If the subclass wishes to push a buffer downstream in its aggregate
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* implementation, it should do so through the
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* gst_aggregator_finish_buffer () method. This method will take care
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* of sending and ordering mandatory events such as stream start, caps
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* and segment.
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*
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* * Same goes for EOS events, which should not be pushed directly by the
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* subclass, it should instead return GST_FLOW_EOS in its aggregate
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* implementation.
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*
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* * Note that the aggregator logic regarding gap event handling is to turn
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* these into gap buffers with matching PTS and duration. It will also
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* flag these buffers with GST_BUFFER_FLAG_GAP and GST_BUFFER_FLAG_DROPPABLE
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* to ease their identification and subsequent processing.
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*
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* * Subclasses must use (a subclass of) #GstAggregatorPad for both their
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* sink and source pads.
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* See gst_element_class_add_static_pad_template_with_gtype().
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*
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* This class used to live in gst-plugins-bad and was moved to core.
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*
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* Since: 1.14
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*/
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/**
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* SECTION: gstaggregatorpad
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* @title: GstAggregatorPad
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* @short_description: #GstPad subclass for pads managed by #GstAggregator
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* @see_also: gstcollectpads for historical reasons.
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*
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* Pads managed by a #GstAggregator subclass.
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*
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* This class used to live in gst-plugins-bad and was moved to core.
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*
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* Since: 1.14
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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 <string.h> /* strlen */
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#include "gstaggregator.h"
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typedef enum
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{
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GST_AGGREGATOR_START_TIME_SELECTION_ZERO,
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GST_AGGREGATOR_START_TIME_SELECTION_FIRST,
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GST_AGGREGATOR_START_TIME_SELECTION_SET
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} GstAggregatorStartTimeSelection;
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static GType
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gst_aggregator_start_time_selection_get_type (void)
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{
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static GType gtype = 0;
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if (gtype == 0) {
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static const GEnumValue values[] = {
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{GST_AGGREGATOR_START_TIME_SELECTION_ZERO,
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"Start at 0 running time (default)", "zero"},
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{GST_AGGREGATOR_START_TIME_SELECTION_FIRST,
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"Start at first observed input running time", "first"},
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{GST_AGGREGATOR_START_TIME_SELECTION_SET,
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"Set start time with start-time property", "set"},
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{0, NULL, NULL}
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};
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gtype = g_enum_register_static ("GstAggregatorStartTimeSelection", values);
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}
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return gtype;
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}
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/* Might become API */
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#if 0
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static void gst_aggregator_merge_tags (GstAggregator * aggregator,
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const GstTagList * tags, GstTagMergeMode mode);
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#endif
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static void gst_aggregator_set_latency_property (GstAggregator * agg,
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GstClockTime latency);
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static GstClockTime gst_aggregator_get_latency_property (GstAggregator * agg);
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static GstClockTime gst_aggregator_get_latency_unlocked (GstAggregator * self);
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static void gst_aggregator_pad_buffer_consumed (GstAggregatorPad * pad,
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GstBuffer * buffer);
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GST_DEBUG_CATEGORY_STATIC (aggregator_debug);
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#define GST_CAT_DEFAULT aggregator_debug
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/* Locking order, locks in this element must always be taken in this order
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*
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* standard sink pad stream lock -> GST_PAD_STREAM_LOCK (aggpad)
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* Aggregator pad flush lock -> PAD_FLUSH_LOCK(aggpad)
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* standard src pad stream lock -> GST_PAD_STREAM_LOCK (srcpad)
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* Aggregator src lock -> SRC_LOCK(agg) w/ SRC_WAIT/BROADCAST
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* standard element object lock -> GST_OBJECT_LOCK(agg)
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* Aggregator pad lock -> PAD_LOCK (aggpad) w/ PAD_WAIT/BROADCAST_EVENT(aggpad)
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* standard src pad object lock -> GST_OBJECT_LOCK(srcpad)
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* standard sink pad object lock -> GST_OBJECT_LOCK(aggpad)
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*/
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/* GstAggregatorPad definitions */
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#define PAD_LOCK(pad) G_STMT_START { \
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GST_TRACE_OBJECT (pad, "Taking PAD lock from thread %p", \
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g_thread_self()); \
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g_mutex_lock(&pad->priv->lock); \
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GST_TRACE_OBJECT (pad, "Took PAD lock from thread %p", \
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g_thread_self()); \
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} G_STMT_END
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#define PAD_UNLOCK(pad) G_STMT_START { \
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GST_TRACE_OBJECT (pad, "Releasing PAD lock from thread %p", \
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g_thread_self()); \
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g_mutex_unlock(&pad->priv->lock); \
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GST_TRACE_OBJECT (pad, "Release PAD lock from thread %p", \
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g_thread_self()); \
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} G_STMT_END
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#define PAD_WAIT_EVENT(pad) G_STMT_START { \
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GST_LOG_OBJECT (pad, "Waiting for buffer to be consumed thread %p", \
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g_thread_self()); \
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g_cond_wait(&(((GstAggregatorPad* )pad)->priv->event_cond), \
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(&((GstAggregatorPad*)pad)->priv->lock)); \
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GST_LOG_OBJECT (pad, "DONE Waiting for buffer to be consumed on thread %p", \
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g_thread_self()); \
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} G_STMT_END
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#define PAD_BROADCAST_EVENT(pad) G_STMT_START { \
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GST_LOG_OBJECT (pad, "Signaling buffer consumed from thread %p", \
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g_thread_self()); \
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g_cond_broadcast(&(((GstAggregatorPad* )pad)->priv->event_cond)); \
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} G_STMT_END
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#define PAD_FLUSH_LOCK(pad) G_STMT_START { \
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GST_TRACE_OBJECT (pad, "Taking lock from thread %p", \
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g_thread_self()); \
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g_mutex_lock(&pad->priv->flush_lock); \
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GST_TRACE_OBJECT (pad, "Took lock from thread %p", \
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g_thread_self()); \
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} G_STMT_END
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#define PAD_FLUSH_UNLOCK(pad) G_STMT_START { \
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GST_TRACE_OBJECT (pad, "Releasing lock from thread %p", \
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g_thread_self()); \
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g_mutex_unlock(&pad->priv->flush_lock); \
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GST_TRACE_OBJECT (pad, "Release lock from thread %p", \
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g_thread_self()); \
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} G_STMT_END
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#define SRC_LOCK(self) G_STMT_START { \
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GST_TRACE_OBJECT (self, "Taking src lock from thread %p", \
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g_thread_self()); \
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g_mutex_lock(&self->priv->src_lock); \
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GST_TRACE_OBJECT (self, "Took src lock from thread %p", \
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g_thread_self()); \
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} G_STMT_END
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#define SRC_UNLOCK(self) G_STMT_START { \
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GST_TRACE_OBJECT (self, "Releasing src lock from thread %p", \
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g_thread_self()); \
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g_mutex_unlock(&self->priv->src_lock); \
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GST_TRACE_OBJECT (self, "Released src lock from thread %p", \
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g_thread_self()); \
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} G_STMT_END
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#define SRC_WAIT(self) G_STMT_START { \
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GST_LOG_OBJECT (self, "Waiting for src on thread %p", \
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g_thread_self()); \
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g_cond_wait(&(self->priv->src_cond), &(self->priv->src_lock)); \
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GST_LOG_OBJECT (self, "DONE Waiting for src on thread %p", \
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g_thread_self()); \
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} G_STMT_END
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#define SRC_BROADCAST(self) G_STMT_START { \
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GST_LOG_OBJECT (self, "Signaling src from thread %p", \
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g_thread_self()); \
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if (self->priv->aggregate_id) \
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gst_clock_id_unschedule (self->priv->aggregate_id); \
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g_cond_broadcast(&(self->priv->src_cond)); \
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} G_STMT_END
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struct _GstAggregatorPadPrivate
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{
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/* Following fields are protected by the PAD_LOCK */
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GstFlowReturn flow_return;
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guint32 last_flush_start_seqnum;
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guint32 last_flush_stop_seqnum;
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gboolean first_buffer;
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GQueue data; /* buffers, events and queries */
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GstBuffer *clipped_buffer;
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guint num_buffers;
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/* used to track fill state of queues, only used with live-src and when
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* latency property is set to > 0 */
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GstClockTime head_position;
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GstClockTime tail_position;
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GstClockTime head_time; /* running time */
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GstClockTime tail_time;
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GstClockTime time_level; /* how much head is ahead of tail */
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GstSegment head_segment; /* segment before the queue */
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gboolean negotiated;
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gboolean eos;
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GMutex lock;
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GCond event_cond;
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/* This lock prevents a flush start processing happening while
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* the chain function is also happening.
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*/
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GMutex flush_lock;
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/* properties */
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gboolean emit_signals;
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};
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/* Must be called with PAD_LOCK held */
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static void
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gst_aggregator_pad_reset_unlocked (GstAggregatorPad * aggpad)
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{
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aggpad->priv->eos = FALSE;
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aggpad->priv->flow_return = GST_FLOW_OK;
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GST_OBJECT_LOCK (aggpad);
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gst_segment_init (&aggpad->segment, GST_FORMAT_UNDEFINED);
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gst_segment_init (&aggpad->priv->head_segment, GST_FORMAT_UNDEFINED);
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GST_OBJECT_UNLOCK (aggpad);
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aggpad->priv->head_position = GST_CLOCK_TIME_NONE;
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aggpad->priv->tail_position = GST_CLOCK_TIME_NONE;
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aggpad->priv->head_time = GST_CLOCK_TIME_NONE;
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aggpad->priv->tail_time = GST_CLOCK_TIME_NONE;
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aggpad->priv->time_level = 0;
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aggpad->priv->first_buffer = TRUE;
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}
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static gboolean
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gst_aggregator_pad_flush (GstAggregatorPad * aggpad, GstAggregator * agg)
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{
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GstAggregatorPadClass *klass = GST_AGGREGATOR_PAD_GET_CLASS (aggpad);
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PAD_LOCK (aggpad);
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gst_aggregator_pad_reset_unlocked (aggpad);
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PAD_UNLOCK (aggpad);
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if (klass->flush)
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return (klass->flush (aggpad, agg) == GST_FLOW_OK);
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return TRUE;
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}
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/*************************************
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* GstAggregator implementation *
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*************************************/
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static GstElementClass *aggregator_parent_class = NULL;
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static gint aggregator_private_offset = 0;
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/* All members are protected by the object lock unless otherwise noted */
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struct _GstAggregatorPrivate
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{
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gint max_padserial;
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/* Our state is >= PAUSED */
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gboolean running; /* protected by src_lock */
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/* seqnum from last seek or common seqnum to flush start events received
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* on all pads, for flushing without a seek */
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guint32 next_seqnum;
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/* seqnum to apply to synthetic segment/eos events */
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guint32 seqnum;
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gboolean send_stream_start; /* protected by srcpad stream lock */
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gboolean send_segment;
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gboolean flushing;
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gboolean send_eos; /* protected by srcpad stream lock */
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GstCaps *srccaps; /* protected by the srcpad stream lock */
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GstTagList *tags;
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gboolean tags_changed;
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gboolean peer_latency_live; /* protected by src_lock */
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GstClockTime peer_latency_min; /* protected by src_lock */
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GstClockTime peer_latency_max; /* protected by src_lock */
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gboolean has_peer_latency; /* protected by src_lock */
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GstClockTime sub_latency_min; /* protected by src_lock */
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GstClockTime sub_latency_max; /* protected by src_lock */
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GstClockTime upstream_latency_min; /* protected by src_lock */
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/* aggregate */
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GstClockID aggregate_id; /* protected by src_lock */
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GMutex src_lock;
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GCond src_cond;
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gboolean first_buffer; /* protected by object lock */
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GstAggregatorStartTimeSelection start_time_selection;
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GstClockTime start_time;
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/* protected by the object lock */
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GstQuery *allocation_query;
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GstAllocator *allocator;
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GstBufferPool *pool;
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GstAllocationParams allocation_params;
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/* properties */
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gint64 latency; /* protected by both src_lock and all pad locks */
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};
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/* Seek event forwarding helper */
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typedef struct
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{
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/* parameters */
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GstEvent *event;
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gboolean flush;
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gboolean only_to_active_pads;
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/* results */
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gboolean result;
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gboolean one_actually_seeked;
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} EventData;
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#define DEFAULT_LATENCY 0
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#define DEFAULT_MIN_UPSTREAM_LATENCY 0
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#define DEFAULT_START_TIME_SELECTION GST_AGGREGATOR_START_TIME_SELECTION_ZERO
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#define DEFAULT_START_TIME (-1)
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enum
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{
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PROP_0,
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PROP_LATENCY,
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PROP_MIN_UPSTREAM_LATENCY,
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PROP_START_TIME_SELECTION,
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PROP_START_TIME,
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PROP_LAST
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};
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static GstFlowReturn gst_aggregator_pad_chain_internal (GstAggregator * self,
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GstAggregatorPad * aggpad, GstBuffer * buffer, gboolean head);
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static gboolean
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gst_aggregator_pad_queue_is_empty (GstAggregatorPad * pad)
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{
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return (g_queue_peek_tail (&pad->priv->data) == NULL &&
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pad->priv->clipped_buffer == NULL);
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}
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/* Will return FALSE if there's no buffer available on every non-EOS pad, or
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* if at least one of the pads has an event or query at the top of its queue.
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*
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* Only returns TRUE if all non-EOS pads have a buffer available at the top of
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* their queue or a clipped buffer already.
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*/
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static gboolean
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gst_aggregator_check_pads_ready (GstAggregator * self,
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gboolean * have_event_or_query_ret)
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{
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GstAggregatorPad *pad = NULL;
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GList *l, *sinkpads;
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gboolean have_buffer = TRUE;
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gboolean have_event_or_query = FALSE;
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GST_LOG_OBJECT (self, "checking pads");
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GST_OBJECT_LOCK (self);
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sinkpads = GST_ELEMENT_CAST (self)->sinkpads;
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if (sinkpads == NULL)
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goto no_sinkpads;
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for (l = sinkpads; l != NULL; l = l->next) {
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pad = l->data;
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PAD_LOCK (pad);
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/* If there's an event or query at the top of the queue and we don't yet
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* have taken the top buffer out and stored it as clip_buffer, remember
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* that and exit the loop. We first have to handle all events/queries
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* before we handle any buffers. */
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if (!pad->priv->clipped_buffer
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&& (GST_IS_EVENT (g_queue_peek_tail (&pad->priv->data))
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|| GST_IS_QUERY (g_queue_peek_tail (&pad->priv->data)))) {
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PAD_UNLOCK (pad);
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have_event_or_query = TRUE;
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break;
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}
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/* Otherwise check if we have a clipped buffer or a buffer at the top of
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* the queue, and if not then this pad is not ready unless it is also EOS */
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if (!pad->priv->clipped_buffer
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&& !GST_IS_BUFFER (g_queue_peek_tail (&pad->priv->data))) {
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/* We must not have any buffers at all in this pad then as otherwise we
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* would've had an event/query at the top of the queue */
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g_assert (pad->priv->num_buffers == 0);
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/* Only consider this pad as worth waiting for if it's not already EOS.
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* There's no point in waiting for buffers on EOS pads */
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if (!pad->priv->eos)
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have_buffer = FALSE;
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} else if (self->priv->peer_latency_live) {
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/* In live mode, having a single pad with buffers is enough to
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* generate a start time from it. In non-live mode all pads need
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* to have a buffer
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*/
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self->priv->first_buffer = FALSE;
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}
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PAD_UNLOCK (pad);
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}
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if (have_event_or_query)
|
|
goto pad_not_ready_but_event_or_query;
|
|
|
|
if (!have_buffer)
|
|
goto pad_not_ready;
|
|
|
|
if (have_buffer)
|
|
self->priv->first_buffer = FALSE;
|
|
|
|
GST_OBJECT_UNLOCK (self);
|
|
GST_LOG_OBJECT (self, "pads are ready");
|
|
|
|
if (have_event_or_query_ret)
|
|
*have_event_or_query_ret = have_event_or_query;
|
|
|
|
return TRUE;
|
|
|
|
no_sinkpads:
|
|
{
|
|
GST_LOG_OBJECT (self, "pads not ready: no sink pads");
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (have_event_or_query_ret)
|
|
*have_event_or_query_ret = have_event_or_query;
|
|
|
|
return FALSE;
|
|
}
|
|
pad_not_ready:
|
|
{
|
|
GST_LOG_OBJECT (pad, "pad not ready to be aggregated yet");
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (have_event_or_query_ret)
|
|
*have_event_or_query_ret = have_event_or_query;
|
|
|
|
return FALSE;
|
|
}
|
|
pad_not_ready_but_event_or_query:
|
|
{
|
|
GST_LOG_OBJECT (pad,
|
|
"pad not ready to be aggregated yet, need to handle serialized event or query first");
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (have_event_or_query_ret)
|
|
*have_event_or_query_ret = have_event_or_query;
|
|
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_reset_flow_values (GstAggregator * self)
|
|
{
|
|
GST_OBJECT_LOCK (self);
|
|
self->priv->send_stream_start = TRUE;
|
|
self->priv->send_segment = TRUE;
|
|
gst_segment_init (&GST_AGGREGATOR_PAD (self->srcpad)->segment,
|
|
GST_FORMAT_TIME);
|
|
self->priv->first_buffer = TRUE;
|
|
GST_OBJECT_UNLOCK (self);
|
|
}
|
|
|
|
static inline void
|
|
gst_aggregator_push_mandatory_events (GstAggregator * self)
|
|
{
|
|
GstAggregatorPrivate *priv = self->priv;
|
|
GstEvent *segment = NULL;
|
|
GstEvent *tags = NULL;
|
|
|
|
if (self->priv->send_stream_start) {
|
|
gchar s_id[32];
|
|
|
|
GST_INFO_OBJECT (self, "pushing stream start");
|
|
/* stream-start (FIXME: create id based on input ids) */
|
|
g_snprintf (s_id, sizeof (s_id), "agg-%08x", g_random_int ());
|
|
if (!gst_pad_push_event (GST_PAD (self->srcpad),
|
|
gst_event_new_stream_start (s_id))) {
|
|
GST_WARNING_OBJECT (self->srcpad, "Sending stream start event failed");
|
|
}
|
|
self->priv->send_stream_start = FALSE;
|
|
}
|
|
|
|
if (self->priv->srccaps) {
|
|
|
|
GST_INFO_OBJECT (self, "pushing caps: %" GST_PTR_FORMAT,
|
|
self->priv->srccaps);
|
|
if (!gst_pad_push_event (GST_PAD (self->srcpad),
|
|
gst_event_new_caps (self->priv->srccaps))) {
|
|
GST_WARNING_OBJECT (self->srcpad, "Sending caps event failed");
|
|
}
|
|
gst_caps_unref (self->priv->srccaps);
|
|
self->priv->srccaps = NULL;
|
|
}
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
if (self->priv->send_segment && !self->priv->flushing) {
|
|
segment =
|
|
gst_event_new_segment (&GST_AGGREGATOR_PAD (self->srcpad)->segment);
|
|
|
|
if (!self->priv->seqnum)
|
|
/* This code-path is in preparation to be able to run without a source
|
|
* connected. Then we won't have a seq-num from a segment event. */
|
|
self->priv->seqnum = gst_event_get_seqnum (segment);
|
|
else
|
|
gst_event_set_seqnum (segment, self->priv->seqnum);
|
|
self->priv->send_segment = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (self, "pushing segment %" GST_PTR_FORMAT, segment);
|
|
}
|
|
|
|
if (priv->tags && priv->tags_changed && !self->priv->flushing) {
|
|
tags = gst_event_new_tag (gst_tag_list_ref (priv->tags));
|
|
priv->tags_changed = FALSE;
|
|
}
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (segment)
|
|
gst_pad_push_event (self->srcpad, segment);
|
|
if (tags)
|
|
gst_pad_push_event (self->srcpad, tags);
|
|
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_set_src_caps:
|
|
* @self: The #GstAggregator
|
|
* @caps: The #GstCaps to set on the src pad.
|
|
*
|
|
* Sets the caps to be used on the src pad.
|
|
*/
|
|
void
|
|
gst_aggregator_set_src_caps (GstAggregator * self, GstCaps * caps)
|
|
{
|
|
GST_PAD_STREAM_LOCK (self->srcpad);
|
|
gst_caps_replace (&self->priv->srccaps, caps);
|
|
gst_aggregator_push_mandatory_events (self);
|
|
GST_PAD_STREAM_UNLOCK (self->srcpad);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_aggregator_default_finish_buffer (GstAggregator * self, GstBuffer * buffer)
|
|
{
|
|
gst_aggregator_push_mandatory_events (self);
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
if (!self->priv->flushing && gst_pad_is_active (self->srcpad)) {
|
|
GST_TRACE_OBJECT (self, "pushing buffer %" GST_PTR_FORMAT, buffer);
|
|
GST_OBJECT_UNLOCK (self);
|
|
return gst_pad_push (self->srcpad, buffer);
|
|
} else {
|
|
GST_INFO_OBJECT (self, "Not pushing (active: %i, flushing: %i)",
|
|
self->priv->flushing, gst_pad_is_active (self->srcpad));
|
|
GST_OBJECT_UNLOCK (self);
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_OK;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_finish_buffer:
|
|
* @aggregator: The #GstAggregator
|
|
* @buffer: (transfer full): the #GstBuffer to push.
|
|
*
|
|
* This method will push the provided output buffer downstream. If needed,
|
|
* mandatory events such as stream-start, caps, and segment events will be
|
|
* sent before pushing the buffer.
|
|
*/
|
|
GstFlowReturn
|
|
gst_aggregator_finish_buffer (GstAggregator * aggregator, GstBuffer * buffer)
|
|
{
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (aggregator);
|
|
|
|
g_assert (klass->finish_buffer != NULL);
|
|
|
|
return klass->finish_buffer (aggregator, buffer);
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_push_eos (GstAggregator * self)
|
|
{
|
|
GstEvent *event;
|
|
gst_aggregator_push_mandatory_events (self);
|
|
|
|
event = gst_event_new_eos ();
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
self->priv->send_eos = FALSE;
|
|
gst_event_set_seqnum (event, self->priv->seqnum);
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
gst_pad_push_event (self->srcpad, event);
|
|
}
|
|
|
|
static GstClockTime
|
|
gst_aggregator_get_next_time (GstAggregator * self)
|
|
{
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
if (klass->get_next_time)
|
|
return klass->get_next_time (self);
|
|
|
|
return GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_wait_and_check (GstAggregator * self, gboolean * timeout)
|
|
{
|
|
GstClockTime latency;
|
|
GstClockTime start;
|
|
gboolean res;
|
|
gboolean have_event_or_query = FALSE;
|
|
|
|
*timeout = FALSE;
|
|
|
|
SRC_LOCK (self);
|
|
|
|
latency = gst_aggregator_get_latency_unlocked (self);
|
|
|
|
if (gst_aggregator_check_pads_ready (self, &have_event_or_query)) {
|
|
GST_DEBUG_OBJECT (self, "all pads have data");
|
|
SRC_UNLOCK (self);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* If we have an event or query, immediately return FALSE instead of waiting
|
|
* and handle it immediately */
|
|
if (have_event_or_query) {
|
|
GST_DEBUG_OBJECT (self, "Have serialized event or query to handle first");
|
|
SRC_UNLOCK (self);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Before waiting, check if we're actually still running */
|
|
if (!self->priv->running || !self->priv->send_eos) {
|
|
SRC_UNLOCK (self);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
start = gst_aggregator_get_next_time (self);
|
|
|
|
/* If we're not live, or if we use the running time
|
|
* of the first buffer as start time, we wait until
|
|
* all pads have buffers.
|
|
* Otherwise (i.e. if we are live!), we wait on the clock
|
|
* and if a pad does not have a buffer in time we ignore
|
|
* that pad.
|
|
*/
|
|
GST_OBJECT_LOCK (self);
|
|
if (!GST_CLOCK_TIME_IS_VALID (latency) ||
|
|
!GST_IS_CLOCK (GST_ELEMENT_CLOCK (self)) ||
|
|
!GST_CLOCK_TIME_IS_VALID (start) ||
|
|
(self->priv->first_buffer
|
|
&& self->priv->start_time_selection ==
|
|
GST_AGGREGATOR_START_TIME_SELECTION_FIRST)) {
|
|
/* We wake up here when something happened, and below
|
|
* then check if we're ready now. If we return FALSE,
|
|
* we will be directly called again.
|
|
*/
|
|
GST_OBJECT_UNLOCK (self);
|
|
SRC_WAIT (self);
|
|
} else {
|
|
GstClockTime base_time, time;
|
|
GstClock *clock;
|
|
GstClockReturn status;
|
|
GstClockTimeDiff jitter;
|
|
|
|
GST_DEBUG_OBJECT (self, "got subclass start time: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (start));
|
|
|
|
base_time = GST_ELEMENT_CAST (self)->base_time;
|
|
clock = gst_object_ref (GST_ELEMENT_CLOCK (self));
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
time = base_time + start;
|
|
time += latency;
|
|
|
|
GST_DEBUG_OBJECT (self, "possibly waiting for clock to reach %"
|
|
GST_TIME_FORMAT " (base %" GST_TIME_FORMAT " start %" GST_TIME_FORMAT
|
|
" latency %" GST_TIME_FORMAT " current %" GST_TIME_FORMAT ")",
|
|
GST_TIME_ARGS (time),
|
|
GST_TIME_ARGS (base_time),
|
|
GST_TIME_ARGS (start), GST_TIME_ARGS (latency),
|
|
GST_TIME_ARGS (gst_clock_get_time (clock)));
|
|
|
|
self->priv->aggregate_id = gst_clock_new_single_shot_id (clock, time);
|
|
gst_object_unref (clock);
|
|
SRC_UNLOCK (self);
|
|
|
|
jitter = 0;
|
|
status = gst_clock_id_wait (self->priv->aggregate_id, &jitter);
|
|
|
|
SRC_LOCK (self);
|
|
if (self->priv->aggregate_id) {
|
|
gst_clock_id_unref (self->priv->aggregate_id);
|
|
self->priv->aggregate_id = NULL;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (self,
|
|
"clock returned %d (jitter: %" GST_STIME_FORMAT ")",
|
|
status, GST_STIME_ARGS (jitter));
|
|
|
|
/* we timed out */
|
|
if (status == GST_CLOCK_OK || status == GST_CLOCK_EARLY) {
|
|
SRC_UNLOCK (self);
|
|
*timeout = TRUE;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
res = gst_aggregator_check_pads_ready (self, NULL);
|
|
SRC_UNLOCK (self);
|
|
|
|
return res;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
gboolean processed_event;
|
|
GstFlowReturn flow_ret;
|
|
} DoHandleEventsAndQueriesData;
|
|
|
|
static gboolean
|
|
gst_aggregator_do_events_and_queries (GstElement * self, GstPad * epad,
|
|
gpointer user_data)
|
|
{
|
|
GstAggregatorPad *pad = GST_AGGREGATOR_PAD_CAST (epad);
|
|
GstAggregator *aggregator = GST_AGGREGATOR_CAST (self);
|
|
GstEvent *event = NULL;
|
|
GstQuery *query = NULL;
|
|
GstAggregatorClass *klass = NULL;
|
|
DoHandleEventsAndQueriesData *data = user_data;
|
|
|
|
do {
|
|
event = NULL;
|
|
query = NULL;
|
|
|
|
PAD_LOCK (pad);
|
|
if (pad->priv->clipped_buffer == NULL &&
|
|
!GST_IS_BUFFER (g_queue_peek_tail (&pad->priv->data))) {
|
|
if (GST_IS_EVENT (g_queue_peek_tail (&pad->priv->data)))
|
|
event = gst_event_ref (g_queue_peek_tail (&pad->priv->data));
|
|
if (GST_IS_QUERY (g_queue_peek_tail (&pad->priv->data)))
|
|
query = g_queue_peek_tail (&pad->priv->data);
|
|
}
|
|
PAD_UNLOCK (pad);
|
|
if (event || query) {
|
|
gboolean ret;
|
|
|
|
data->processed_event = TRUE;
|
|
if (klass == NULL)
|
|
klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
if (event) {
|
|
GST_LOG_OBJECT (pad, "Processing %" GST_PTR_FORMAT, event);
|
|
gst_event_ref (event);
|
|
ret = klass->sink_event (aggregator, pad, event);
|
|
|
|
PAD_LOCK (pad);
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_CAPS) {
|
|
pad->priv->negotiated = ret;
|
|
if (!ret)
|
|
pad->priv->flow_return = data->flow_ret = GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
if (g_queue_peek_tail (&pad->priv->data) == event)
|
|
gst_event_unref (g_queue_pop_tail (&pad->priv->data));
|
|
gst_event_unref (event);
|
|
} else if (query) {
|
|
GST_LOG_OBJECT (pad, "Processing %" GST_PTR_FORMAT, query);
|
|
ret = klass->sink_query (aggregator, pad, query);
|
|
|
|
PAD_LOCK (pad);
|
|
if (g_queue_peek_tail (&pad->priv->data) == query) {
|
|
GstStructure *s;
|
|
|
|
s = gst_query_writable_structure (query);
|
|
gst_structure_set (s, "gst-aggregator-retval", G_TYPE_BOOLEAN, ret,
|
|
NULL);
|
|
g_queue_pop_tail (&pad->priv->data);
|
|
}
|
|
}
|
|
|
|
PAD_BROADCAST_EVENT (pad);
|
|
PAD_UNLOCK (pad);
|
|
}
|
|
} while (event || query);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_pad_skip_buffers (GstElement * self, GstPad * epad,
|
|
gpointer user_data)
|
|
{
|
|
GList *item;
|
|
GstAggregatorPad *aggpad = (GstAggregatorPad *) epad;
|
|
GstAggregator *agg = (GstAggregator *) self;
|
|
GstAggregatorPadClass *klass = GST_AGGREGATOR_PAD_GET_CLASS (aggpad);
|
|
|
|
if (!klass->skip_buffer)
|
|
return FALSE;
|
|
|
|
PAD_LOCK (aggpad);
|
|
|
|
item = g_queue_peek_head_link (&aggpad->priv->data);
|
|
while (item) {
|
|
GList *next = item->next;
|
|
|
|
if (GST_IS_BUFFER (item->data)
|
|
&& klass->skip_buffer (aggpad, agg, item->data)) {
|
|
GST_LOG_OBJECT (aggpad, "Skipping %" GST_PTR_FORMAT, item->data);
|
|
gst_aggregator_pad_buffer_consumed (aggpad, GST_BUFFER (item->data));
|
|
gst_buffer_unref (item->data);
|
|
g_queue_delete_link (&aggpad->priv->data, item);
|
|
} else {
|
|
break;
|
|
}
|
|
|
|
item = next;
|
|
}
|
|
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_pad_set_flushing (GstAggregatorPad * aggpad,
|
|
GstFlowReturn flow_return, gboolean full)
|
|
{
|
|
GList *item;
|
|
|
|
PAD_LOCK (aggpad);
|
|
if (flow_return == GST_FLOW_NOT_LINKED)
|
|
aggpad->priv->flow_return = MIN (flow_return, aggpad->priv->flow_return);
|
|
else
|
|
aggpad->priv->flow_return = flow_return;
|
|
|
|
item = g_queue_peek_head_link (&aggpad->priv->data);
|
|
while (item) {
|
|
GList *next = item->next;
|
|
|
|
/* In partial flush, we do like the pad, we get rid of non-sticky events
|
|
* and EOS/SEGMENT.
|
|
*/
|
|
if (full || GST_IS_BUFFER (item->data) ||
|
|
GST_EVENT_TYPE (item->data) == GST_EVENT_EOS ||
|
|
GST_EVENT_TYPE (item->data) == GST_EVENT_SEGMENT ||
|
|
!GST_EVENT_IS_STICKY (item->data)) {
|
|
if (!GST_IS_QUERY (item->data))
|
|
gst_mini_object_unref (item->data);
|
|
g_queue_delete_link (&aggpad->priv->data, item);
|
|
}
|
|
item = next;
|
|
}
|
|
aggpad->priv->num_buffers = 0;
|
|
gst_buffer_replace (&aggpad->priv->clipped_buffer, NULL);
|
|
|
|
PAD_BROADCAST_EVENT (aggpad);
|
|
PAD_UNLOCK (aggpad);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_aggregator_default_update_src_caps (GstAggregator * agg, GstCaps * caps,
|
|
GstCaps ** ret)
|
|
{
|
|
*ret = gst_caps_ref (caps);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_aggregator_default_fixate_src_caps (GstAggregator * agg, GstCaps * caps)
|
|
{
|
|
caps = gst_caps_fixate (caps);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_default_negotiated_src_caps (GstAggregator * agg, GstCaps * caps)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* takes ownership of the pool, allocator and query */
|
|
static gboolean
|
|
gst_aggregator_set_allocation (GstAggregator * self,
|
|
GstBufferPool * pool, GstAllocator * allocator,
|
|
GstAllocationParams * params, GstQuery * query)
|
|
{
|
|
GstAllocator *oldalloc;
|
|
GstBufferPool *oldpool;
|
|
GstQuery *oldquery;
|
|
|
|
GST_DEBUG ("storing allocation query");
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
oldpool = self->priv->pool;
|
|
self->priv->pool = pool;
|
|
|
|
oldalloc = self->priv->allocator;
|
|
self->priv->allocator = allocator;
|
|
|
|
oldquery = self->priv->allocation_query;
|
|
self->priv->allocation_query = query;
|
|
|
|
if (params)
|
|
self->priv->allocation_params = *params;
|
|
else
|
|
gst_allocation_params_init (&self->priv->allocation_params);
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (oldpool) {
|
|
GST_DEBUG_OBJECT (self, "deactivating old pool %p", oldpool);
|
|
gst_buffer_pool_set_active (oldpool, FALSE);
|
|
gst_object_unref (oldpool);
|
|
}
|
|
if (oldalloc) {
|
|
gst_object_unref (oldalloc);
|
|
}
|
|
if (oldquery) {
|
|
gst_query_unref (oldquery);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static gboolean
|
|
gst_aggregator_decide_allocation (GstAggregator * self, GstQuery * query)
|
|
{
|
|
GstAggregatorClass *aggclass = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
if (aggclass->decide_allocation)
|
|
if (!aggclass->decide_allocation (self, query))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_do_allocation (GstAggregator * self, GstCaps * caps)
|
|
{
|
|
GstQuery *query;
|
|
gboolean result = TRUE;
|
|
GstBufferPool *pool = NULL;
|
|
GstAllocator *allocator;
|
|
GstAllocationParams params;
|
|
|
|
/* find a pool for the negotiated caps now */
|
|
GST_DEBUG_OBJECT (self, "doing allocation query");
|
|
query = gst_query_new_allocation (caps, TRUE);
|
|
if (!gst_pad_peer_query (self->srcpad, query)) {
|
|
/* not a problem, just debug a little */
|
|
GST_DEBUG_OBJECT (self, "peer ALLOCATION query failed");
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (self, "calling decide_allocation");
|
|
result = gst_aggregator_decide_allocation (self, query);
|
|
|
|
GST_DEBUG_OBJECT (self, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
|
|
query);
|
|
|
|
if (!result)
|
|
goto no_decide_allocation;
|
|
|
|
/* we got configuration from our peer or the decide_allocation method,
|
|
* parse them */
|
|
if (gst_query_get_n_allocation_params (query) > 0) {
|
|
gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
|
|
} else {
|
|
allocator = NULL;
|
|
gst_allocation_params_init (¶ms);
|
|
}
|
|
|
|
if (gst_query_get_n_allocation_pools (query) > 0)
|
|
gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
|
|
|
|
/* now store */
|
|
result =
|
|
gst_aggregator_set_allocation (self, pool, allocator, ¶ms, query);
|
|
|
|
return result;
|
|
|
|
/* Errors */
|
|
no_decide_allocation:
|
|
{
|
|
GST_WARNING_OBJECT (self, "Failed to decide allocation");
|
|
gst_query_unref (query);
|
|
|
|
return result;
|
|
}
|
|
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_default_negotiate (GstAggregator * self)
|
|
{
|
|
GstAggregatorClass *agg_klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
GstCaps *downstream_caps, *template_caps, *caps = NULL;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
template_caps = gst_pad_get_pad_template_caps (self->srcpad);
|
|
downstream_caps = gst_pad_peer_query_caps (self->srcpad, template_caps);
|
|
|
|
if (gst_caps_is_empty (downstream_caps)) {
|
|
GST_INFO_OBJECT (self, "Downstream caps (%"
|
|
GST_PTR_FORMAT ") not compatible with pad template caps (%"
|
|
GST_PTR_FORMAT ")", downstream_caps, template_caps);
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
|
goto done;
|
|
}
|
|
|
|
g_assert (agg_klass->update_src_caps);
|
|
GST_DEBUG_OBJECT (self, "updating caps from %" GST_PTR_FORMAT,
|
|
downstream_caps);
|
|
ret = agg_klass->update_src_caps (self, downstream_caps, &caps);
|
|
if (ret < GST_FLOW_OK) {
|
|
GST_WARNING_OBJECT (self, "Subclass failed to update provided caps");
|
|
goto done;
|
|
} else if (ret == GST_AGGREGATOR_FLOW_NEED_DATA) {
|
|
GST_DEBUG_OBJECT (self, "Subclass needs more data to decide on caps");
|
|
goto done;
|
|
}
|
|
if ((caps == NULL || gst_caps_is_empty (caps)) && ret >= GST_FLOW_OK) {
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
|
goto done;
|
|
}
|
|
GST_DEBUG_OBJECT (self, " to %" GST_PTR_FORMAT, caps);
|
|
|
|
#ifdef GST_ENABLE_EXTRA_CHECKS
|
|
if (!gst_caps_is_subset (caps, template_caps)) {
|
|
GstCaps *intersection;
|
|
|
|
GST_ERROR_OBJECT (self,
|
|
"update_src_caps returned caps %" GST_PTR_FORMAT
|
|
" which are not a real subset of the template caps %"
|
|
GST_PTR_FORMAT, caps, template_caps);
|
|
g_warning ("%s: update_src_caps returned caps which are not a real "
|
|
"subset of the filter caps", GST_ELEMENT_NAME (self));
|
|
|
|
intersection =
|
|
gst_caps_intersect_full (template_caps, caps, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (caps);
|
|
caps = intersection;
|
|
}
|
|
#endif
|
|
|
|
if (gst_caps_is_any (caps)) {
|
|
goto done;
|
|
}
|
|
|
|
if (!gst_caps_is_fixed (caps)) {
|
|
g_assert (agg_klass->fixate_src_caps);
|
|
|
|
GST_DEBUG_OBJECT (self, "fixate caps from %" GST_PTR_FORMAT, caps);
|
|
if (!(caps = agg_klass->fixate_src_caps (self, caps))) {
|
|
GST_WARNING_OBJECT (self, "Subclass failed to fixate provided caps");
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
|
goto done;
|
|
}
|
|
GST_DEBUG_OBJECT (self, " to %" GST_PTR_FORMAT, caps);
|
|
}
|
|
|
|
if (agg_klass->negotiated_src_caps) {
|
|
if (!agg_klass->negotiated_src_caps (self, caps)) {
|
|
GST_WARNING_OBJECT (self, "Subclass failed to accept negotiated caps");
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
gst_aggregator_set_src_caps (self, caps);
|
|
|
|
if (!gst_aggregator_do_allocation (self, caps)) {
|
|
GST_WARNING_OBJECT (self, "Allocation negotiation failed");
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
|
|
done:
|
|
gst_caps_unref (downstream_caps);
|
|
gst_caps_unref (template_caps);
|
|
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
|
|
return ret >= GST_FLOW_OK || ret == GST_AGGREGATOR_FLOW_NEED_DATA;
|
|
}
|
|
|
|
/* WITH SRC_LOCK held */
|
|
static gboolean
|
|
gst_aggregator_negotiate_unlocked (GstAggregator * self)
|
|
{
|
|
GstAggregatorClass *agg_klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
if (agg_klass->negotiate)
|
|
return agg_klass->negotiate (self);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_negotiate:
|
|
* @self: a #GstAggregator
|
|
*
|
|
* Negotiates src pad caps with downstream elements.
|
|
* Unmarks GST_PAD_FLAG_NEED_RECONFIGURE in any case. But marks it again
|
|
* if #GstAggregatorClass.negotiate() fails.
|
|
*
|
|
* Returns: %TRUE if the negotiation succeeded, else %FALSE.
|
|
*
|
|
* Since: 1.18
|
|
*/
|
|
gboolean
|
|
gst_aggregator_negotiate (GstAggregator * self)
|
|
{
|
|
gboolean ret = TRUE;
|
|
|
|
g_return_val_if_fail (GST_IS_AGGREGATOR (self), FALSE);
|
|
|
|
GST_PAD_STREAM_LOCK (GST_AGGREGATOR_SRC_PAD (self));
|
|
gst_pad_check_reconfigure (GST_AGGREGATOR_SRC_PAD (self));
|
|
ret = gst_aggregator_negotiate_unlocked (self);
|
|
if (!ret)
|
|
gst_pad_mark_reconfigure (GST_AGGREGATOR_SRC_PAD (self));
|
|
GST_PAD_STREAM_UNLOCK (GST_AGGREGATOR_SRC_PAD (self));
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_aggregate_func (GstAggregator * self)
|
|
{
|
|
GstAggregatorPrivate *priv = self->priv;
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
gboolean timeout = FALSE;
|
|
|
|
if (self->priv->running == FALSE) {
|
|
GST_DEBUG_OBJECT (self, "Not running anymore");
|
|
return;
|
|
}
|
|
|
|
GST_LOG_OBJECT (self, "Checking aggregate");
|
|
while (priv->send_eos && priv->running) {
|
|
GstFlowReturn flow_return = GST_FLOW_OK;
|
|
DoHandleEventsAndQueriesData events_query_data = { FALSE, GST_FLOW_OK };
|
|
|
|
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (self),
|
|
gst_aggregator_do_events_and_queries, &events_query_data);
|
|
|
|
if ((flow_return = events_query_data.flow_ret) != GST_FLOW_OK)
|
|
goto handle_error;
|
|
|
|
if (self->priv->peer_latency_live)
|
|
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (self),
|
|
gst_aggregator_pad_skip_buffers, NULL);
|
|
|
|
/* Ensure we have buffers ready (either in clipped_buffer or at the head of
|
|
* the queue */
|
|
if (!gst_aggregator_wait_and_check (self, &timeout))
|
|
continue;
|
|
|
|
if (gst_pad_check_reconfigure (GST_AGGREGATOR_SRC_PAD (self))) {
|
|
if (!gst_aggregator_negotiate_unlocked (self)) {
|
|
gst_pad_mark_reconfigure (GST_AGGREGATOR_SRC_PAD (self));
|
|
if (GST_PAD_IS_FLUSHING (GST_AGGREGATOR_SRC_PAD (self))) {
|
|
flow_return = GST_FLOW_FLUSHING;
|
|
} else {
|
|
flow_return = GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (timeout || flow_return >= GST_FLOW_OK) {
|
|
GST_TRACE_OBJECT (self, "Actually aggregating!");
|
|
flow_return = klass->aggregate (self, timeout);
|
|
}
|
|
|
|
if (flow_return == GST_AGGREGATOR_FLOW_NEED_DATA)
|
|
continue;
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
if (flow_return == GST_FLOW_FLUSHING && priv->flushing) {
|
|
/* We don't want to set the pads to flushing, but we want to
|
|
* stop the thread, so just break here */
|
|
GST_OBJECT_UNLOCK (self);
|
|
break;
|
|
}
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (flow_return == GST_FLOW_EOS || flow_return == GST_FLOW_ERROR) {
|
|
gst_aggregator_push_eos (self);
|
|
}
|
|
|
|
handle_error:
|
|
GST_LOG_OBJECT (self, "flow return is %s", gst_flow_get_name (flow_return));
|
|
|
|
if (flow_return != GST_FLOW_OK) {
|
|
GList *item;
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
for (item = GST_ELEMENT (self)->sinkpads; item; item = item->next) {
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (item->data);
|
|
|
|
gst_aggregator_pad_set_flushing (aggpad, flow_return, TRUE);
|
|
}
|
|
GST_OBJECT_UNLOCK (self);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Pause the task here, the only ways to get here are:
|
|
* 1) We're stopping, in which case the task is stopped anyway
|
|
* 2) We got a flow error above, in which case it might take
|
|
* some time to forward the flow return upstream and we
|
|
* would otherwise call the task function over and over
|
|
* again without doing anything
|
|
*/
|
|
gst_pad_pause_task (self->srcpad);
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_start (GstAggregator * self)
|
|
{
|
|
GstAggregatorClass *klass;
|
|
gboolean result;
|
|
|
|
self->priv->send_stream_start = TRUE;
|
|
self->priv->send_segment = TRUE;
|
|
self->priv->send_eos = TRUE;
|
|
self->priv->srccaps = NULL;
|
|
|
|
gst_aggregator_set_allocation (self, NULL, NULL, NULL, NULL);
|
|
|
|
klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
if (klass->start)
|
|
result = klass->start (self);
|
|
else
|
|
result = TRUE;
|
|
|
|
return result;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_stop_srcpad_task (GstAggregator * self, GstEvent * flush_start)
|
|
{
|
|
gboolean res = TRUE;
|
|
|
|
GST_INFO_OBJECT (self, "%s srcpad task",
|
|
flush_start ? "Pausing" : "Stopping");
|
|
|
|
SRC_LOCK (self);
|
|
self->priv->running = FALSE;
|
|
SRC_BROADCAST (self);
|
|
SRC_UNLOCK (self);
|
|
|
|
if (flush_start) {
|
|
res = gst_pad_push_event (self->srcpad, flush_start);
|
|
}
|
|
|
|
gst_pad_stop_task (self->srcpad);
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_start_srcpad_task (GstAggregator * self)
|
|
{
|
|
GST_INFO_OBJECT (self, "Starting srcpad task");
|
|
|
|
self->priv->running = TRUE;
|
|
gst_pad_start_task (GST_PAD (self->srcpad),
|
|
(GstTaskFunction) gst_aggregator_aggregate_func, self, NULL);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_aggregator_flush (GstAggregator * self)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstAggregatorPrivate *priv = self->priv;
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
GST_DEBUG_OBJECT (self, "Flushing everything");
|
|
GST_OBJECT_LOCK (self);
|
|
priv->send_segment = TRUE;
|
|
priv->flushing = FALSE;
|
|
priv->tags_changed = FALSE;
|
|
GST_OBJECT_UNLOCK (self);
|
|
if (klass->flush)
|
|
ret = klass->flush (self);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* Called with GstAggregator's object lock held */
|
|
|
|
static gboolean
|
|
gst_aggregator_all_flush_stop_received (GstAggregator * self, guint32 seqnum)
|
|
{
|
|
GList *tmp;
|
|
GstAggregatorPad *tmppad;
|
|
|
|
for (tmp = GST_ELEMENT (self)->sinkpads; tmp; tmp = tmp->next) {
|
|
tmppad = (GstAggregatorPad *) tmp->data;
|
|
|
|
if (tmppad->priv->last_flush_stop_seqnum != seqnum)
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Called with GstAggregator's object lock held */
|
|
|
|
static gboolean
|
|
gst_aggregator_all_flush_start_received (GstAggregator * self, guint32 seqnum)
|
|
{
|
|
GList *tmp;
|
|
GstAggregatorPad *tmppad;
|
|
|
|
for (tmp = GST_ELEMENT (self)->sinkpads; tmp; tmp = tmp->next) {
|
|
tmppad = (GstAggregatorPad *) tmp->data;
|
|
|
|
if (tmppad->priv->last_flush_start_seqnum != seqnum) {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_flush_start (GstAggregator * self, GstAggregatorPad * aggpad,
|
|
GstEvent * event)
|
|
{
|
|
GstAggregatorPrivate *priv = self->priv;
|
|
GstAggregatorPadPrivate *padpriv = aggpad->priv;
|
|
guint32 seqnum = gst_event_get_seqnum (event);
|
|
|
|
gst_aggregator_pad_set_flushing (aggpad, GST_FLOW_FLUSHING, FALSE);
|
|
|
|
PAD_FLUSH_LOCK (aggpad);
|
|
PAD_LOCK (aggpad);
|
|
padpriv->last_flush_start_seqnum = seqnum;
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
|
|
if (!priv->flushing && gst_aggregator_all_flush_start_received (self, seqnum)) {
|
|
/* Make sure we don't forward more than one FLUSH_START */
|
|
priv->flushing = TRUE;
|
|
priv->next_seqnum = seqnum;
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
GST_INFO_OBJECT (self, "Flushing, pausing srcpad task");
|
|
gst_aggregator_stop_srcpad_task (self, event);
|
|
|
|
event = NULL;
|
|
} else {
|
|
gst_event_unref (event);
|
|
GST_OBJECT_UNLOCK (self);
|
|
}
|
|
|
|
PAD_FLUSH_UNLOCK (aggpad);
|
|
}
|
|
|
|
/* Must be called with the the PAD_LOCK held */
|
|
static void
|
|
update_time_level (GstAggregatorPad * aggpad, gboolean head)
|
|
{
|
|
GstAggregatorPadPrivate *priv = aggpad->priv;
|
|
|
|
if (head) {
|
|
if (GST_CLOCK_TIME_IS_VALID (priv->head_position) &&
|
|
priv->head_segment.format == GST_FORMAT_TIME)
|
|
priv->head_time = gst_segment_to_running_time (&priv->head_segment,
|
|
GST_FORMAT_TIME, priv->head_position);
|
|
else
|
|
priv->head_time = GST_CLOCK_TIME_NONE;
|
|
|
|
if (!GST_CLOCK_TIME_IS_VALID (priv->tail_time))
|
|
priv->tail_time = priv->head_time;
|
|
} else {
|
|
if (GST_CLOCK_TIME_IS_VALID (priv->tail_position) &&
|
|
aggpad->segment.format == GST_FORMAT_TIME)
|
|
priv->tail_time = gst_segment_to_running_time (&aggpad->segment,
|
|
GST_FORMAT_TIME, priv->tail_position);
|
|
else
|
|
priv->tail_time = priv->head_time;
|
|
}
|
|
|
|
if (priv->head_time == GST_CLOCK_TIME_NONE ||
|
|
priv->tail_time == GST_CLOCK_TIME_NONE) {
|
|
priv->time_level = 0;
|
|
return;
|
|
}
|
|
|
|
if (priv->tail_time > priv->head_time)
|
|
priv->time_level = 0;
|
|
else
|
|
priv->time_level = priv->head_time - priv->tail_time;
|
|
}
|
|
|
|
|
|
/* GstAggregator vmethods default implementations */
|
|
static gboolean
|
|
gst_aggregator_default_sink_event (GstAggregator * self,
|
|
GstAggregatorPad * aggpad, GstEvent * event)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstPad *pad = GST_PAD (aggpad);
|
|
GstAggregatorPrivate *priv = self->priv;
|
|
|
|
GST_DEBUG_OBJECT (aggpad, "Got event: %" GST_PTR_FORMAT, event);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH_START:
|
|
{
|
|
gst_aggregator_flush_start (self, aggpad, event);
|
|
/* We forward only in one case: right after flushing */
|
|
event = NULL;
|
|
goto eat;
|
|
}
|
|
case GST_EVENT_FLUSH_STOP:
|
|
{
|
|
guint32 seqnum = gst_event_get_seqnum (event);
|
|
|
|
PAD_FLUSH_LOCK (aggpad);
|
|
PAD_LOCK (aggpad);
|
|
aggpad->priv->last_flush_stop_seqnum = seqnum;
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
gst_aggregator_pad_flush (aggpad, self);
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
if (priv->flushing
|
|
&& gst_aggregator_all_flush_stop_received (self, seqnum)) {
|
|
GST_OBJECT_UNLOCK (self);
|
|
/* That means we received FLUSH_STOP/FLUSH_STOP on
|
|
* all sinkpads -- Seeking is Done... sending FLUSH_STOP */
|
|
gst_aggregator_flush (self);
|
|
gst_pad_push_event (self->srcpad, event);
|
|
event = NULL;
|
|
SRC_LOCK (self);
|
|
priv->send_eos = TRUE;
|
|
SRC_BROADCAST (self);
|
|
SRC_UNLOCK (self);
|
|
|
|
GST_INFO_OBJECT (self, "Flush stopped");
|
|
|
|
gst_aggregator_start_srcpad_task (self);
|
|
} else {
|
|
GST_OBJECT_UNLOCK (self);
|
|
}
|
|
|
|
PAD_FLUSH_UNLOCK (aggpad);
|
|
|
|
/* We never forward the event */
|
|
goto eat;
|
|
}
|
|
case GST_EVENT_EOS:
|
|
{
|
|
SRC_LOCK (self);
|
|
PAD_LOCK (aggpad);
|
|
g_assert (aggpad->priv->num_buffers == 0);
|
|
aggpad->priv->eos = TRUE;
|
|
PAD_UNLOCK (aggpad);
|
|
SRC_BROADCAST (self);
|
|
SRC_UNLOCK (self);
|
|
goto eat;
|
|
}
|
|
case GST_EVENT_SEGMENT:
|
|
{
|
|
PAD_LOCK (aggpad);
|
|
GST_OBJECT_LOCK (aggpad);
|
|
gst_event_copy_segment (event, &aggpad->segment);
|
|
/* We've got a new segment, tail_position is now meaningless
|
|
* and may interfere with the time_level calculation
|
|
*/
|
|
aggpad->priv->tail_position = GST_CLOCK_TIME_NONE;
|
|
update_time_level (aggpad, FALSE);
|
|
GST_OBJECT_UNLOCK (aggpad);
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
self->priv->seqnum = gst_event_get_seqnum (event);
|
|
GST_OBJECT_UNLOCK (self);
|
|
goto eat;
|
|
}
|
|
case GST_EVENT_STREAM_START:
|
|
{
|
|
goto eat;
|
|
}
|
|
case GST_EVENT_GAP:
|
|
{
|
|
GstClockTime pts, endpts;
|
|
GstClockTime duration;
|
|
GstBuffer *gapbuf;
|
|
|
|
gst_event_parse_gap (event, &pts, &duration);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (duration))
|
|
endpts = pts + duration;
|
|
else
|
|
endpts = GST_CLOCK_TIME_NONE;
|
|
|
|
GST_OBJECT_LOCK (aggpad);
|
|
res = gst_segment_clip (&aggpad->segment, GST_FORMAT_TIME, pts, endpts,
|
|
&pts, &endpts);
|
|
GST_OBJECT_UNLOCK (aggpad);
|
|
|
|
if (!res) {
|
|
GST_WARNING_OBJECT (self, "GAP event outside segment, dropping");
|
|
goto eat;
|
|
}
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (endpts) && GST_CLOCK_TIME_IS_VALID (pts))
|
|
duration = endpts - pts;
|
|
else
|
|
duration = GST_CLOCK_TIME_NONE;
|
|
|
|
gapbuf = gst_buffer_new ();
|
|
GST_BUFFER_PTS (gapbuf) = pts;
|
|
GST_BUFFER_DURATION (gapbuf) = duration;
|
|
GST_BUFFER_FLAG_SET (gapbuf, GST_BUFFER_FLAG_GAP);
|
|
GST_BUFFER_FLAG_SET (gapbuf, GST_BUFFER_FLAG_DROPPABLE);
|
|
|
|
/* Remove GAP event so we can replace it with the buffer */
|
|
PAD_LOCK (aggpad);
|
|
if (g_queue_peek_tail (&aggpad->priv->data) == event)
|
|
gst_event_unref (g_queue_pop_tail (&aggpad->priv->data));
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
if (gst_aggregator_pad_chain_internal (self, aggpad, gapbuf, FALSE) !=
|
|
GST_FLOW_OK) {
|
|
GST_WARNING_OBJECT (self, "Failed to chain gap buffer");
|
|
res = FALSE;
|
|
}
|
|
|
|
goto eat;
|
|
}
|
|
case GST_EVENT_TAG:
|
|
goto eat;
|
|
default:
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (pad, "Forwarding event: %" GST_PTR_FORMAT, event);
|
|
return gst_pad_event_default (pad, GST_OBJECT (self), event);
|
|
|
|
eat:
|
|
GST_DEBUG_OBJECT (pad, "Eating event: %" GST_PTR_FORMAT, event);
|
|
if (event)
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* Queue serialized events and let the others go through directly.
|
|
* The queued events with be handled from the src-pad task in
|
|
* gst_aggregator_do_events_and_queries().
|
|
*/
|
|
static gboolean
|
|
gst_aggregator_default_sink_event_pre_queue (GstAggregator * self,
|
|
GstAggregatorPad * aggpad, GstEvent * event)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
if (GST_EVENT_IS_SERIALIZED (event)
|
|
&& GST_EVENT_TYPE (event) != GST_EVENT_FLUSH_STOP) {
|
|
SRC_LOCK (self);
|
|
PAD_LOCK (aggpad);
|
|
|
|
if (aggpad->priv->flow_return != GST_FLOW_OK)
|
|
goto flushing;
|
|
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT) {
|
|
GST_OBJECT_LOCK (aggpad);
|
|
gst_event_copy_segment (event, &aggpad->priv->head_segment);
|
|
aggpad->priv->head_position = aggpad->priv->head_segment.position;
|
|
update_time_level (aggpad, TRUE);
|
|
GST_OBJECT_UNLOCK (aggpad);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (aggpad, "Store event in queue: %" GST_PTR_FORMAT, event);
|
|
g_queue_push_head (&aggpad->priv->data, event);
|
|
SRC_BROADCAST (self);
|
|
PAD_UNLOCK (aggpad);
|
|
SRC_UNLOCK (self);
|
|
} else {
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
if (!klass->sink_event (self, aggpad, event)) {
|
|
/* Copied from GstPad to convert boolean to a GstFlowReturn in
|
|
* the event handling func */
|
|
ret = GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
|
|
flushing:
|
|
GST_DEBUG_OBJECT (aggpad, "Pad is %s, dropping event",
|
|
gst_flow_get_name (aggpad->priv->flow_return));
|
|
PAD_UNLOCK (aggpad);
|
|
SRC_UNLOCK (self);
|
|
if (GST_EVENT_IS_STICKY (event))
|
|
gst_pad_store_sticky_event (GST_PAD (aggpad), event);
|
|
gst_event_unref (event);
|
|
|
|
return aggpad->priv->flow_return;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_stop_pad (GstElement * self, GstPad * epad, gpointer user_data)
|
|
{
|
|
GstAggregatorPad *pad = GST_AGGREGATOR_PAD_CAST (epad);
|
|
GstAggregator *agg = GST_AGGREGATOR_CAST (self);
|
|
|
|
gst_aggregator_pad_flush (pad, agg);
|
|
|
|
PAD_LOCK (pad);
|
|
pad->priv->flow_return = GST_FLOW_FLUSHING;
|
|
pad->priv->negotiated = FALSE;
|
|
PAD_BROADCAST_EVENT (pad);
|
|
PAD_UNLOCK (pad);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_stop (GstAggregator * agg)
|
|
{
|
|
GstAggregatorClass *klass;
|
|
gboolean result;
|
|
|
|
gst_aggregator_reset_flow_values (agg);
|
|
|
|
/* Application needs to make sure no pads are added while it shuts us down */
|
|
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (agg),
|
|
gst_aggregator_stop_pad, NULL);
|
|
|
|
klass = GST_AGGREGATOR_GET_CLASS (agg);
|
|
|
|
if (klass->stop)
|
|
result = klass->stop (agg);
|
|
else
|
|
result = TRUE;
|
|
|
|
agg->priv->has_peer_latency = FALSE;
|
|
agg->priv->peer_latency_live = FALSE;
|
|
agg->priv->peer_latency_min = agg->priv->peer_latency_max = 0;
|
|
|
|
if (agg->priv->tags)
|
|
gst_tag_list_unref (agg->priv->tags);
|
|
agg->priv->tags = NULL;
|
|
|
|
gst_aggregator_set_allocation (agg, NULL, NULL, NULL, NULL);
|
|
|
|
if (agg->priv->running) {
|
|
/* As sinkpads get deactivated after the src pad, we
|
|
* may have restarted the source pad task after receiving
|
|
* flush events on one of our sinkpads. Stop our src pad
|
|
* task again if that is the case */
|
|
gst_aggregator_stop_srcpad_task (agg, NULL);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* GstElement vmethods implementations */
|
|
static GstStateChangeReturn
|
|
gst_aggregator_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret;
|
|
GstAggregator *self = GST_AGGREGATOR (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
if (!gst_aggregator_start (self))
|
|
goto error_start;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if ((ret =
|
|
GST_ELEMENT_CLASS (aggregator_parent_class)->change_state (element,
|
|
transition)) == GST_STATE_CHANGE_FAILURE)
|
|
goto failure;
|
|
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
if (!gst_aggregator_stop (self)) {
|
|
/* What to do in this case? Error out? */
|
|
GST_ERROR_OBJECT (self, "Subclass failed to stop.");
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
failure:
|
|
{
|
|
GST_ERROR_OBJECT (element, "parent failed state change");
|
|
return ret;
|
|
}
|
|
error_start:
|
|
{
|
|
GST_ERROR_OBJECT (element, "Subclass failed to start");
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
GstAggregator *self = GST_AGGREGATOR (element);
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
|
|
|
|
GST_INFO_OBJECT (pad, "Removing pad");
|
|
|
|
SRC_LOCK (self);
|
|
gst_aggregator_pad_set_flushing (aggpad, GST_FLOW_FLUSHING, TRUE);
|
|
gst_element_remove_pad (element, pad);
|
|
|
|
self->priv->has_peer_latency = FALSE;
|
|
SRC_BROADCAST (self);
|
|
SRC_UNLOCK (self);
|
|
}
|
|
|
|
static GstAggregatorPad *
|
|
gst_aggregator_default_create_new_pad (GstAggregator * self,
|
|
GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
|
|
{
|
|
GstAggregatorPad *agg_pad;
|
|
GstAggregatorPrivate *priv = self->priv;
|
|
gint serial = 0;
|
|
gchar *name = NULL;
|
|
GType pad_type =
|
|
GST_PAD_TEMPLATE_GTYPE (templ) ==
|
|
G_TYPE_NONE ? GST_TYPE_AGGREGATOR_PAD : GST_PAD_TEMPLATE_GTYPE (templ);
|
|
|
|
if (templ->direction != GST_PAD_SINK)
|
|
goto not_sink;
|
|
|
|
if (templ->presence != GST_PAD_REQUEST)
|
|
goto not_request;
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
if (req_name == NULL || strlen (req_name) < 6
|
|
|| !g_str_has_prefix (req_name, "sink_")
|
|
|| strrchr (req_name, '%') != NULL) {
|
|
/* no name given when requesting the pad, use next available int */
|
|
serial = ++priv->max_padserial;
|
|
} else {
|
|
gchar *endptr = NULL;
|
|
|
|
/* parse serial number from requested padname */
|
|
serial = g_ascii_strtoull (&req_name[5], &endptr, 10);
|
|
if (endptr != NULL && *endptr == '\0') {
|
|
if (serial > priv->max_padserial) {
|
|
priv->max_padserial = serial;
|
|
}
|
|
} else {
|
|
serial = ++priv->max_padserial;
|
|
}
|
|
}
|
|
|
|
name = g_strdup_printf ("sink_%u", serial);
|
|
g_assert (g_type_is_a (pad_type, GST_TYPE_AGGREGATOR_PAD));
|
|
agg_pad = g_object_new (pad_type,
|
|
"name", name, "direction", GST_PAD_SINK, "template", templ, NULL);
|
|
g_free (name);
|
|
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
return agg_pad;
|
|
|
|
/* errors */
|
|
not_sink:
|
|
{
|
|
GST_WARNING_OBJECT (self, "request new pad that is not a SINK pad");
|
|
return NULL;
|
|
}
|
|
not_request:
|
|
{
|
|
GST_WARNING_OBJECT (self, "request new pad that is not a REQUEST pad");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static GstPad *
|
|
gst_aggregator_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
|
|
{
|
|
GstAggregator *self;
|
|
GstAggregatorPad *agg_pad;
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (element);
|
|
GstAggregatorPrivate *priv = GST_AGGREGATOR (element)->priv;
|
|
|
|
self = GST_AGGREGATOR (element);
|
|
|
|
agg_pad = klass->create_new_pad (self, templ, req_name, caps);
|
|
if (!agg_pad) {
|
|
GST_ERROR_OBJECT (element, "Couldn't create new pad");
|
|
return NULL;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (element, "Adding pad %s", GST_PAD_NAME (agg_pad));
|
|
|
|
if (priv->running)
|
|
gst_pad_set_active (GST_PAD (agg_pad), TRUE);
|
|
|
|
/* add the pad to the element */
|
|
gst_element_add_pad (element, GST_PAD (agg_pad));
|
|
|
|
return GST_PAD (agg_pad);
|
|
}
|
|
|
|
/* Must be called with SRC_LOCK held */
|
|
|
|
static gboolean
|
|
gst_aggregator_query_latency_unlocked (GstAggregator * self, GstQuery * query)
|
|
{
|
|
gboolean query_ret, live;
|
|
GstClockTime our_latency, min, max;
|
|
|
|
query_ret = gst_pad_query_default (self->srcpad, GST_OBJECT (self), query);
|
|
|
|
if (!query_ret) {
|
|
GST_WARNING_OBJECT (self, "Latency query failed");
|
|
return FALSE;
|
|
}
|
|
|
|
gst_query_parse_latency (query, &live, &min, &max);
|
|
|
|
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (min))) {
|
|
GST_ERROR_OBJECT (self, "Invalid minimum latency %" GST_TIME_FORMAT
|
|
". Please file a bug at " PACKAGE_BUGREPORT ".", GST_TIME_ARGS (min));
|
|
return FALSE;
|
|
}
|
|
|
|
if (self->priv->upstream_latency_min > min) {
|
|
GstClockTimeDiff diff =
|
|
GST_CLOCK_DIFF (min, self->priv->upstream_latency_min);
|
|
|
|
min += diff;
|
|
if (GST_CLOCK_TIME_IS_VALID (max)) {
|
|
max += diff;
|
|
}
|
|
}
|
|
|
|
if (min > max && GST_CLOCK_TIME_IS_VALID (max)) {
|
|
GST_ELEMENT_WARNING (self, CORE, CLOCK, (NULL),
|
|
("Impossible to configure latency: max %" GST_TIME_FORMAT " < min %"
|
|
GST_TIME_FORMAT ". Add queues or other buffering elements.",
|
|
GST_TIME_ARGS (max), GST_TIME_ARGS (min)));
|
|
return FALSE;
|
|
}
|
|
|
|
our_latency = self->priv->latency;
|
|
|
|
self->priv->peer_latency_live = live;
|
|
self->priv->peer_latency_min = min;
|
|
self->priv->peer_latency_max = max;
|
|
self->priv->has_peer_latency = TRUE;
|
|
|
|
/* add our own */
|
|
min += our_latency;
|
|
min += self->priv->sub_latency_min;
|
|
if (GST_CLOCK_TIME_IS_VALID (self->priv->sub_latency_max)
|
|
&& GST_CLOCK_TIME_IS_VALID (max))
|
|
max += self->priv->sub_latency_max + our_latency;
|
|
else
|
|
max = GST_CLOCK_TIME_NONE;
|
|
|
|
SRC_BROADCAST (self);
|
|
|
|
GST_DEBUG_OBJECT (self, "configured latency live:%s min:%" G_GINT64_FORMAT
|
|
" max:%" G_GINT64_FORMAT, live ? "true" : "false", min, max);
|
|
|
|
gst_query_set_latency (query, live, min, max);
|
|
|
|
return query_ret;
|
|
}
|
|
|
|
/*
|
|
* MUST be called with the src_lock held.
|
|
*
|
|
* See gst_aggregator_get_latency() for doc
|
|
*/
|
|
static GstClockTime
|
|
gst_aggregator_get_latency_unlocked (GstAggregator * self)
|
|
{
|
|
GstClockTime latency;
|
|
|
|
g_return_val_if_fail (GST_IS_AGGREGATOR (self), 0);
|
|
|
|
if (!self->priv->has_peer_latency) {
|
|
GstQuery *query = gst_query_new_latency ();
|
|
gboolean ret;
|
|
|
|
ret = gst_aggregator_query_latency_unlocked (self, query);
|
|
gst_query_unref (query);
|
|
if (!ret)
|
|
return GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
if (!self->priv->has_peer_latency || !self->priv->peer_latency_live)
|
|
return GST_CLOCK_TIME_NONE;
|
|
|
|
/* latency_min is never GST_CLOCK_TIME_NONE by construction */
|
|
latency = self->priv->peer_latency_min;
|
|
|
|
/* add our own */
|
|
latency += self->priv->latency;
|
|
latency += self->priv->sub_latency_min;
|
|
|
|
return latency;
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_get_latency:
|
|
* @self: a #GstAggregator
|
|
*
|
|
* Retrieves the latency values reported by @self in response to the latency
|
|
* query, or %GST_CLOCK_TIME_NONE if there is not live source connected and the element
|
|
* will not wait for the clock.
|
|
*
|
|
* Typically only called by subclasses.
|
|
*
|
|
* Returns: The latency or %GST_CLOCK_TIME_NONE if the element does not sync
|
|
*/
|
|
GstClockTime
|
|
gst_aggregator_get_latency (GstAggregator * self)
|
|
{
|
|
GstClockTime ret;
|
|
|
|
SRC_LOCK (self);
|
|
ret = gst_aggregator_get_latency_unlocked (self);
|
|
SRC_UNLOCK (self);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
GstAggregator *self = GST_AGGREGATOR (element);
|
|
|
|
GST_STATE_LOCK (element);
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_SEEK &&
|
|
GST_STATE (element) < GST_STATE_PAUSED) {
|
|
gdouble rate;
|
|
GstFormat fmt;
|
|
GstSeekFlags flags;
|
|
GstSeekType start_type, stop_type;
|
|
gint64 start, stop;
|
|
|
|
gst_event_parse_seek (event, &rate, &fmt, &flags, &start_type,
|
|
&start, &stop_type, &stop);
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
gst_segment_do_seek (&GST_AGGREGATOR_PAD (self->srcpad)->segment, rate, fmt,
|
|
flags, start_type, start, stop_type, stop, NULL);
|
|
self->priv->next_seqnum = gst_event_get_seqnum (event);
|
|
self->priv->first_buffer = FALSE;
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
GST_DEBUG_OBJECT (element, "Storing segment %" GST_PTR_FORMAT, event);
|
|
}
|
|
GST_STATE_UNLOCK (element);
|
|
|
|
return GST_ELEMENT_CLASS (aggregator_parent_class)->send_event (element,
|
|
event);
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_default_src_query (GstAggregator * self, GstQuery * query)
|
|
{
|
|
gboolean res = TRUE;
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_SEEKING:
|
|
{
|
|
GstFormat format;
|
|
|
|
/* don't pass it along as some (file)sink might claim it does
|
|
* whereas with a collectpads in between that will not likely work */
|
|
gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
|
|
gst_query_set_seeking (query, format, FALSE, 0, -1);
|
|
res = TRUE;
|
|
|
|
break;
|
|
}
|
|
case GST_QUERY_LATENCY:
|
|
SRC_LOCK (self);
|
|
res = gst_aggregator_query_latency_unlocked (self, query);
|
|
SRC_UNLOCK (self);
|
|
break;
|
|
default:
|
|
return gst_pad_query_default (self->srcpad, GST_OBJECT (self), query);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_event_forward_func (GstPad * pad, gpointer user_data)
|
|
{
|
|
EventData *evdata = user_data;
|
|
gboolean ret = TRUE;
|
|
GstPad *peer = gst_pad_get_peer (pad);
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
|
|
|
|
if (peer) {
|
|
if (evdata->only_to_active_pads && aggpad->priv->first_buffer) {
|
|
GST_DEBUG_OBJECT (pad, "not sending event to inactive pad");
|
|
ret = TRUE;
|
|
} else {
|
|
ret = gst_pad_send_event (peer, gst_event_ref (evdata->event));
|
|
GST_DEBUG_OBJECT (pad, "return of event push is %d", ret);
|
|
}
|
|
}
|
|
|
|
if (ret == FALSE) {
|
|
if (GST_EVENT_TYPE (evdata->event) == GST_EVENT_SEEK) {
|
|
GstQuery *seeking = gst_query_new_seeking (GST_FORMAT_TIME);
|
|
|
|
GST_DEBUG_OBJECT (pad, "Event %" GST_PTR_FORMAT " failed", evdata->event);
|
|
|
|
if (gst_pad_query (peer, seeking)) {
|
|
gboolean seekable;
|
|
|
|
gst_query_parse_seeking (seeking, NULL, &seekable, NULL, NULL);
|
|
|
|
if (seekable == FALSE) {
|
|
GST_INFO_OBJECT (pad,
|
|
"Source not seekable, We failed but it does not matter!");
|
|
|
|
ret = TRUE;
|
|
}
|
|
} else {
|
|
GST_ERROR_OBJECT (pad, "Query seeking FAILED");
|
|
}
|
|
|
|
gst_query_unref (seeking);
|
|
}
|
|
} else {
|
|
evdata->one_actually_seeked = TRUE;
|
|
}
|
|
|
|
evdata->result &= ret;
|
|
|
|
if (peer)
|
|
gst_object_unref (peer);
|
|
|
|
/* Always send to all pads */
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_forward_event_to_all_sinkpads (GstAggregator * self,
|
|
EventData * evdata)
|
|
{
|
|
evdata->result = TRUE;
|
|
evdata->one_actually_seeked = FALSE;
|
|
|
|
gst_pad_forward (self->srcpad, gst_aggregator_event_forward_func, evdata);
|
|
|
|
gst_event_unref (evdata->event);
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_do_seek (GstAggregator * self, GstEvent * event)
|
|
{
|
|
gdouble rate;
|
|
GstFormat fmt;
|
|
GstSeekFlags flags;
|
|
GstSeekType start_type, stop_type;
|
|
gint64 start, stop;
|
|
gboolean flush;
|
|
EventData evdata = { 0, };
|
|
GstAggregatorPrivate *priv = self->priv;
|
|
|
|
gst_event_parse_seek (event, &rate, &fmt, &flags, &start_type,
|
|
&start, &stop_type, &stop);
|
|
|
|
GST_INFO_OBJECT (self, "starting SEEK");
|
|
|
|
flush = flags & GST_SEEK_FLAG_FLUSH;
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
|
|
if (gst_event_get_seqnum (event) == self->priv->next_seqnum) {
|
|
evdata.result = TRUE;
|
|
GST_DEBUG_OBJECT (self, "Dropping duplicated seek event with seqnum %d",
|
|
self->priv->next_seqnum);
|
|
GST_OBJECT_UNLOCK (self);
|
|
goto done;
|
|
}
|
|
|
|
self->priv->next_seqnum = gst_event_get_seqnum (event);
|
|
|
|
gst_segment_do_seek (&GST_AGGREGATOR_PAD (self->srcpad)->segment, rate, fmt,
|
|
flags, start_type, start, stop_type, stop, NULL);
|
|
|
|
/* Seeking sets a position */
|
|
self->priv->first_buffer = FALSE;
|
|
|
|
if (flush)
|
|
priv->flushing = TRUE;
|
|
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (flush) {
|
|
GstEvent *event = gst_event_new_flush_start ();
|
|
|
|
gst_event_set_seqnum (event, self->priv->next_seqnum);
|
|
gst_aggregator_stop_srcpad_task (self, event);
|
|
}
|
|
|
|
/* forward the seek upstream */
|
|
evdata.event = event;
|
|
evdata.flush = flush;
|
|
evdata.only_to_active_pads = FALSE;
|
|
gst_aggregator_forward_event_to_all_sinkpads (self, &evdata);
|
|
event = NULL;
|
|
|
|
if (!evdata.result || !evdata.one_actually_seeked) {
|
|
GST_OBJECT_LOCK (self);
|
|
priv->flushing = FALSE;
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
/* No flush stop is inbound for us to forward */
|
|
if (flush) {
|
|
GstEvent *event = gst_event_new_flush_stop (TRUE);
|
|
|
|
gst_event_set_seqnum (event, self->priv->next_seqnum);
|
|
gst_pad_push_event (self->srcpad, event);
|
|
}
|
|
}
|
|
|
|
done:
|
|
GST_INFO_OBJECT (self, "seek done, result: %d", evdata.result);
|
|
|
|
return evdata.result;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_default_src_event (GstAggregator * self, GstEvent * event)
|
|
{
|
|
EventData evdata = { 0, };
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
/* _do_seek() unrefs the event. */
|
|
return gst_aggregator_do_seek (self, event);
|
|
case GST_EVENT_NAVIGATION:
|
|
/* navigation is rather pointless. */
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Don't forward QOS events to pads that had no active buffer yet. Otherwise
|
|
* they will receive a QOS event that has earliest_time=0 (because we can't
|
|
* have negative timestamps), and consider their buffer as too late */
|
|
evdata.event = event;
|
|
evdata.flush = FALSE;
|
|
evdata.only_to_active_pads = GST_EVENT_TYPE (event) == GST_EVENT_QOS;
|
|
gst_aggregator_forward_event_to_all_sinkpads (self, &evdata);
|
|
return evdata.result;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_src_pad_event_func (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (parent);
|
|
|
|
return klass->src_event (GST_AGGREGATOR (parent), event);
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_src_pad_query_func (GstPad * pad, GstObject * parent,
|
|
GstQuery * query)
|
|
{
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (parent);
|
|
|
|
return klass->src_query (GST_AGGREGATOR (parent), query);
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_src_pad_activate_mode_func (GstPad * pad,
|
|
GstObject * parent, GstPadMode mode, gboolean active)
|
|
{
|
|
GstAggregator *self = GST_AGGREGATOR (parent);
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (parent);
|
|
|
|
if (klass->src_activate) {
|
|
if (klass->src_activate (self, mode, active) == FALSE) {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (active == TRUE) {
|
|
switch (mode) {
|
|
case GST_PAD_MODE_PUSH:
|
|
{
|
|
GST_INFO_OBJECT (pad, "Activating pad!");
|
|
gst_aggregator_start_srcpad_task (self);
|
|
return TRUE;
|
|
}
|
|
default:
|
|
{
|
|
GST_ERROR_OBJECT (pad, "Only supported mode is PUSH");
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* deactivating */
|
|
GST_INFO_OBJECT (self, "Deactivating srcpad");
|
|
|
|
gst_aggregator_stop_srcpad_task (self, FALSE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_default_sink_query (GstAggregator * self,
|
|
GstAggregatorPad * aggpad, GstQuery * query)
|
|
{
|
|
GstPad *pad = GST_PAD (aggpad);
|
|
|
|
if (GST_QUERY_TYPE (query) == GST_QUERY_ALLOCATION) {
|
|
GstQuery *decide_query = NULL;
|
|
GstAggregatorClass *agg_class;
|
|
gboolean ret;
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
PAD_LOCK (aggpad);
|
|
if (G_UNLIKELY (!aggpad->priv->negotiated)) {
|
|
GST_DEBUG_OBJECT (self,
|
|
"not negotiated yet, can't answer ALLOCATION query");
|
|
PAD_UNLOCK (aggpad);
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
if ((decide_query = self->priv->allocation_query))
|
|
gst_query_ref (decide_query);
|
|
PAD_UNLOCK (aggpad);
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
GST_DEBUG_OBJECT (self,
|
|
"calling propose allocation with query %" GST_PTR_FORMAT, decide_query);
|
|
|
|
agg_class = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
/* pass the query to the propose_allocation vmethod if any */
|
|
if (agg_class->propose_allocation)
|
|
ret = agg_class->propose_allocation (self, aggpad, decide_query, query);
|
|
else
|
|
ret = FALSE;
|
|
|
|
if (decide_query)
|
|
gst_query_unref (decide_query);
|
|
|
|
GST_DEBUG_OBJECT (self, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
|
|
return ret;
|
|
}
|
|
|
|
return gst_pad_query_default (pad, GST_OBJECT (self), query);
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_default_sink_query_pre_queue (GstAggregator * self,
|
|
GstAggregatorPad * aggpad, GstQuery * query)
|
|
{
|
|
if (GST_QUERY_IS_SERIALIZED (query)) {
|
|
GstStructure *s;
|
|
gboolean ret = FALSE;
|
|
|
|
SRC_LOCK (self);
|
|
PAD_LOCK (aggpad);
|
|
|
|
if (aggpad->priv->flow_return != GST_FLOW_OK) {
|
|
SRC_UNLOCK (self);
|
|
goto flushing;
|
|
}
|
|
|
|
g_queue_push_head (&aggpad->priv->data, query);
|
|
SRC_BROADCAST (self);
|
|
SRC_UNLOCK (self);
|
|
|
|
while (!gst_aggregator_pad_queue_is_empty (aggpad)
|
|
&& aggpad->priv->flow_return == GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (aggpad, "Waiting for buffer to be consumed");
|
|
PAD_WAIT_EVENT (aggpad);
|
|
}
|
|
|
|
s = gst_query_writable_structure (query);
|
|
if (gst_structure_get_boolean (s, "gst-aggregator-retval", &ret))
|
|
gst_structure_remove_field (s, "gst-aggregator-retval");
|
|
else
|
|
g_queue_remove (&aggpad->priv->data, query);
|
|
|
|
if (aggpad->priv->flow_return != GST_FLOW_OK)
|
|
goto flushing;
|
|
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
return ret;
|
|
} else {
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
|
|
return klass->sink_query (self, aggpad, query);
|
|
}
|
|
|
|
flushing:
|
|
GST_DEBUG_OBJECT (aggpad, "Pad is %s, dropping query",
|
|
gst_flow_get_name (aggpad->priv->flow_return));
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_finalize (GObject * object)
|
|
{
|
|
GstAggregator *self = (GstAggregator *) object;
|
|
|
|
g_mutex_clear (&self->priv->src_lock);
|
|
g_cond_clear (&self->priv->src_cond);
|
|
|
|
G_OBJECT_CLASS (aggregator_parent_class)->finalize (object);
|
|
}
|
|
|
|
/*
|
|
* gst_aggregator_set_latency_property:
|
|
* @agg: a #GstAggregator
|
|
* @latency: the new latency value (in nanoseconds).
|
|
*
|
|
* Sets the new latency value to @latency. This value is used to limit the
|
|
* amount of time a pad waits for data to appear before considering the pad
|
|
* as unresponsive.
|
|
*/
|
|
static void
|
|
gst_aggregator_set_latency_property (GstAggregator * self, GstClockTime latency)
|
|
{
|
|
gboolean changed;
|
|
|
|
g_return_if_fail (GST_IS_AGGREGATOR (self));
|
|
g_return_if_fail (GST_CLOCK_TIME_IS_VALID (latency));
|
|
|
|
SRC_LOCK (self);
|
|
changed = (self->priv->latency != latency);
|
|
|
|
if (changed) {
|
|
GList *item;
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
/* First lock all the pads */
|
|
for (item = GST_ELEMENT_CAST (self)->sinkpads; item; item = item->next) {
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (item->data);
|
|
PAD_LOCK (aggpad);
|
|
}
|
|
|
|
self->priv->latency = latency;
|
|
|
|
SRC_BROADCAST (self);
|
|
|
|
/* Now wake up the pads */
|
|
for (item = GST_ELEMENT_CAST (self)->sinkpads; item; item = item->next) {
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (item->data);
|
|
PAD_BROADCAST_EVENT (aggpad);
|
|
PAD_UNLOCK (aggpad);
|
|
}
|
|
GST_OBJECT_UNLOCK (self);
|
|
}
|
|
|
|
SRC_UNLOCK (self);
|
|
|
|
if (changed)
|
|
gst_element_post_message (GST_ELEMENT_CAST (self),
|
|
gst_message_new_latency (GST_OBJECT_CAST (self)));
|
|
}
|
|
|
|
/*
|
|
* gst_aggregator_get_latency_property:
|
|
* @agg: a #GstAggregator
|
|
*
|
|
* Gets the latency value. See gst_aggregator_set_latency for
|
|
* more details.
|
|
*
|
|
* Returns: The time in nanoseconds to wait for data to arrive on a sink pad
|
|
* before a pad is deemed unresponsive. A value of -1 means an
|
|
* unlimited time.
|
|
*/
|
|
static GstClockTime
|
|
gst_aggregator_get_latency_property (GstAggregator * agg)
|
|
{
|
|
GstClockTime res;
|
|
|
|
g_return_val_if_fail (GST_IS_AGGREGATOR (agg), GST_CLOCK_TIME_NONE);
|
|
|
|
GST_OBJECT_LOCK (agg);
|
|
res = agg->priv->latency;
|
|
GST_OBJECT_UNLOCK (agg);
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstAggregator *agg = GST_AGGREGATOR (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_LATENCY:
|
|
gst_aggregator_set_latency_property (agg, g_value_get_uint64 (value));
|
|
break;
|
|
case PROP_MIN_UPSTREAM_LATENCY:
|
|
SRC_LOCK (agg);
|
|
agg->priv->upstream_latency_min = g_value_get_uint64 (value);
|
|
SRC_UNLOCK (agg);
|
|
break;
|
|
case PROP_START_TIME_SELECTION:
|
|
agg->priv->start_time_selection = g_value_get_enum (value);
|
|
break;
|
|
case PROP_START_TIME:
|
|
agg->priv->start_time = g_value_get_uint64 (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstAggregator *agg = GST_AGGREGATOR (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_LATENCY:
|
|
g_value_set_uint64 (value, gst_aggregator_get_latency_property (agg));
|
|
break;
|
|
case PROP_MIN_UPSTREAM_LATENCY:
|
|
SRC_LOCK (agg);
|
|
g_value_set_uint64 (value, agg->priv->upstream_latency_min);
|
|
SRC_UNLOCK (agg);
|
|
break;
|
|
case PROP_START_TIME_SELECTION:
|
|
g_value_set_enum (value, agg->priv->start_time_selection);
|
|
break;
|
|
case PROP_START_TIME:
|
|
g_value_set_uint64 (value, agg->priv->start_time);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* GObject vmethods implementations */
|
|
static void
|
|
gst_aggregator_class_init (GstAggregatorClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
GstElementClass *gstelement_class = (GstElementClass *) klass;
|
|
|
|
aggregator_parent_class = g_type_class_peek_parent (klass);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (aggregator_debug, "aggregator",
|
|
GST_DEBUG_FG_MAGENTA, "GstAggregator");
|
|
|
|
if (aggregator_private_offset != 0)
|
|
g_type_class_adjust_private_offset (klass, &aggregator_private_offset);
|
|
|
|
klass->finish_buffer = gst_aggregator_default_finish_buffer;
|
|
|
|
klass->sink_event = gst_aggregator_default_sink_event;
|
|
klass->sink_query = gst_aggregator_default_sink_query;
|
|
|
|
klass->src_event = gst_aggregator_default_src_event;
|
|
klass->src_query = gst_aggregator_default_src_query;
|
|
|
|
klass->create_new_pad = gst_aggregator_default_create_new_pad;
|
|
klass->update_src_caps = gst_aggregator_default_update_src_caps;
|
|
klass->fixate_src_caps = gst_aggregator_default_fixate_src_caps;
|
|
klass->negotiated_src_caps = gst_aggregator_default_negotiated_src_caps;
|
|
|
|
klass->negotiate = gst_aggregator_default_negotiate;
|
|
|
|
klass->sink_event_pre_queue = gst_aggregator_default_sink_event_pre_queue;
|
|
klass->sink_query_pre_queue = gst_aggregator_default_sink_query_pre_queue;
|
|
|
|
gstelement_class->request_new_pad =
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_request_new_pad);
|
|
gstelement_class->send_event = GST_DEBUG_FUNCPTR (gst_aggregator_send_event);
|
|
gstelement_class->release_pad =
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_release_pad);
|
|
gstelement_class->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_change_state);
|
|
|
|
gobject_class->set_property = gst_aggregator_set_property;
|
|
gobject_class->get_property = gst_aggregator_get_property;
|
|
gobject_class->finalize = gst_aggregator_finalize;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_LATENCY,
|
|
g_param_spec_uint64 ("latency", "Buffer latency",
|
|
"Additional latency in live mode to allow upstream "
|
|
"to take longer to produce buffers for the current "
|
|
"position (in nanoseconds)", 0, G_MAXUINT64,
|
|
DEFAULT_LATENCY, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstAggregator:min-upstream-latency:
|
|
*
|
|
* Force minimum upstream latency (in nanoseconds). When sources with a
|
|
* higher latency are expected to be plugged in dynamically after the
|
|
* aggregator has started playing, this allows overriding the minimum
|
|
* latency reported by the initial source(s). This is only taken into
|
|
* account when larger than the actually reported minimum latency.
|
|
*
|
|
* Since: 1.16
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_MIN_UPSTREAM_LATENCY,
|
|
g_param_spec_uint64 ("min-upstream-latency", "Buffer latency",
|
|
"When sources with a higher latency are expected to be plugged "
|
|
"in dynamically after the aggregator has started playing, "
|
|
"this allows overriding the minimum latency reported by the "
|
|
"initial source(s). This is only taken into account when larger "
|
|
"than the actually reported minimum latency. (nanoseconds)",
|
|
0, G_MAXUINT64,
|
|
DEFAULT_LATENCY, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_START_TIME_SELECTION,
|
|
g_param_spec_enum ("start-time-selection", "Start Time Selection",
|
|
"Decides which start time is output",
|
|
gst_aggregator_start_time_selection_get_type (),
|
|
DEFAULT_START_TIME_SELECTION,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_START_TIME,
|
|
g_param_spec_uint64 ("start-time", "Start Time",
|
|
"Start time to use if start-time-selection=set", 0,
|
|
G_MAXUINT64,
|
|
DEFAULT_START_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
}
|
|
|
|
static inline gpointer
|
|
gst_aggregator_get_instance_private (GstAggregator * self)
|
|
{
|
|
return (G_STRUCT_MEMBER_P (self, aggregator_private_offset));
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_init (GstAggregator * self, GstAggregatorClass * klass)
|
|
{
|
|
GstPadTemplate *pad_template;
|
|
GstAggregatorPrivate *priv;
|
|
GType pad_type;
|
|
|
|
g_return_if_fail (klass->aggregate != NULL);
|
|
|
|
self->priv = gst_aggregator_get_instance_private (self);
|
|
|
|
priv = self->priv;
|
|
|
|
pad_template =
|
|
gst_element_class_get_pad_template (GST_ELEMENT_CLASS (klass), "src");
|
|
g_return_if_fail (pad_template != NULL);
|
|
|
|
priv->max_padserial = -1;
|
|
priv->tags_changed = FALSE;
|
|
|
|
self->priv->peer_latency_live = FALSE;
|
|
self->priv->peer_latency_min = self->priv->sub_latency_min = 0;
|
|
self->priv->peer_latency_max = self->priv->sub_latency_max = 0;
|
|
self->priv->has_peer_latency = FALSE;
|
|
|
|
pad_type =
|
|
GST_PAD_TEMPLATE_GTYPE (pad_template) ==
|
|
G_TYPE_NONE ? GST_TYPE_AGGREGATOR_PAD :
|
|
GST_PAD_TEMPLATE_GTYPE (pad_template);
|
|
g_assert (g_type_is_a (pad_type, GST_TYPE_AGGREGATOR_PAD));
|
|
self->srcpad =
|
|
g_object_new (pad_type, "name", "src", "direction", GST_PAD_SRC,
|
|
"template", pad_template, NULL);
|
|
|
|
gst_aggregator_reset_flow_values (self);
|
|
|
|
gst_pad_set_event_function (self->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_src_pad_event_func));
|
|
gst_pad_set_query_function (self->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_src_pad_query_func));
|
|
gst_pad_set_activatemode_function (self->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_src_pad_activate_mode_func));
|
|
|
|
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
|
|
|
|
self->priv->upstream_latency_min = DEFAULT_MIN_UPSTREAM_LATENCY;
|
|
self->priv->latency = DEFAULT_LATENCY;
|
|
self->priv->start_time_selection = DEFAULT_START_TIME_SELECTION;
|
|
self->priv->start_time = DEFAULT_START_TIME;
|
|
|
|
g_mutex_init (&self->priv->src_lock);
|
|
g_cond_init (&self->priv->src_cond);
|
|
}
|
|
|
|
/* we can't use G_DEFINE_ABSTRACT_TYPE because we need the klass in the _init
|
|
* method to get to the padtemplates */
|
|
GType
|
|
gst_aggregator_get_type (void)
|
|
{
|
|
static volatile gsize type = 0;
|
|
|
|
if (g_once_init_enter (&type)) {
|
|
GType _type;
|
|
static const GTypeInfo info = {
|
|
sizeof (GstAggregatorClass),
|
|
NULL,
|
|
NULL,
|
|
(GClassInitFunc) gst_aggregator_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstAggregator),
|
|
0,
|
|
(GInstanceInitFunc) gst_aggregator_init,
|
|
};
|
|
|
|
_type = g_type_register_static (GST_TYPE_ELEMENT,
|
|
"GstAggregator", &info, G_TYPE_FLAG_ABSTRACT);
|
|
|
|
aggregator_private_offset =
|
|
g_type_add_instance_private (_type, sizeof (GstAggregatorPrivate));
|
|
|
|
g_once_init_leave (&type, _type);
|
|
}
|
|
return type;
|
|
}
|
|
|
|
/* Must be called with SRC lock and PAD lock held */
|
|
static gboolean
|
|
gst_aggregator_pad_has_space (GstAggregator * self, GstAggregatorPad * aggpad)
|
|
{
|
|
/* Empty queue always has space */
|
|
if (aggpad->priv->num_buffers == 0 && aggpad->priv->clipped_buffer == NULL)
|
|
return TRUE;
|
|
|
|
/* We also want at least two buffers, one is being processed and one is ready
|
|
* for the next iteration when we operate in live mode. */
|
|
if (self->priv->peer_latency_live && aggpad->priv->num_buffers < 2)
|
|
return TRUE;
|
|
|
|
/* zero latency, if there is a buffer, it's full */
|
|
if (self->priv->latency == 0)
|
|
return FALSE;
|
|
|
|
/* Allow no more buffers than the latency */
|
|
return (aggpad->priv->time_level <= self->priv->latency);
|
|
}
|
|
|
|
/* Must be called with the PAD_LOCK held */
|
|
static void
|
|
apply_buffer (GstAggregatorPad * aggpad, GstBuffer * buffer, gboolean head)
|
|
{
|
|
GstClockTime timestamp;
|
|
|
|
if (GST_BUFFER_DTS_IS_VALID (buffer))
|
|
timestamp = GST_BUFFER_DTS (buffer);
|
|
else
|
|
timestamp = GST_BUFFER_PTS (buffer);
|
|
|
|
if (timestamp == GST_CLOCK_TIME_NONE) {
|
|
if (head)
|
|
timestamp = aggpad->priv->head_position;
|
|
else
|
|
timestamp = aggpad->priv->tail_position;
|
|
}
|
|
|
|
/* add duration */
|
|
if (GST_BUFFER_DURATION_IS_VALID (buffer))
|
|
timestamp += GST_BUFFER_DURATION (buffer);
|
|
|
|
if (head)
|
|
aggpad->priv->head_position = timestamp;
|
|
else
|
|
aggpad->priv->tail_position = timestamp;
|
|
|
|
update_time_level (aggpad, head);
|
|
}
|
|
|
|
/*
|
|
* Can be called either from the sinkpad's chain function or from the srcpad's
|
|
* thread in the case of a buffer synthetized from a GAP event.
|
|
* Because of this second case, FLUSH_LOCK can't be used here.
|
|
*/
|
|
|
|
static GstFlowReturn
|
|
gst_aggregator_pad_chain_internal (GstAggregator * self,
|
|
GstAggregatorPad * aggpad, GstBuffer * buffer, gboolean head)
|
|
{
|
|
GstFlowReturn flow_return;
|
|
GstClockTime buf_pts;
|
|
|
|
PAD_LOCK (aggpad);
|
|
flow_return = aggpad->priv->flow_return;
|
|
if (flow_return != GST_FLOW_OK)
|
|
goto flushing;
|
|
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
buf_pts = GST_BUFFER_PTS (buffer);
|
|
|
|
for (;;) {
|
|
SRC_LOCK (self);
|
|
GST_OBJECT_LOCK (self);
|
|
PAD_LOCK (aggpad);
|
|
|
|
if (aggpad->priv->first_buffer) {
|
|
self->priv->has_peer_latency = FALSE;
|
|
aggpad->priv->first_buffer = FALSE;
|
|
}
|
|
|
|
if ((gst_aggregator_pad_has_space (self, aggpad) || !head)
|
|
&& aggpad->priv->flow_return == GST_FLOW_OK) {
|
|
if (head)
|
|
g_queue_push_head (&aggpad->priv->data, buffer);
|
|
else
|
|
g_queue_push_tail (&aggpad->priv->data, buffer);
|
|
apply_buffer (aggpad, buffer, head);
|
|
aggpad->priv->num_buffers++;
|
|
buffer = NULL;
|
|
SRC_BROADCAST (self);
|
|
break;
|
|
}
|
|
|
|
flow_return = aggpad->priv->flow_return;
|
|
if (flow_return != GST_FLOW_OK) {
|
|
GST_OBJECT_UNLOCK (self);
|
|
SRC_UNLOCK (self);
|
|
goto flushing;
|
|
}
|
|
GST_DEBUG_OBJECT (aggpad, "Waiting for buffer to be consumed");
|
|
GST_OBJECT_UNLOCK (self);
|
|
SRC_UNLOCK (self);
|
|
PAD_WAIT_EVENT (aggpad);
|
|
|
|
PAD_UNLOCK (aggpad);
|
|
}
|
|
|
|
if (self->priv->first_buffer) {
|
|
GstClockTime start_time;
|
|
GstAggregatorPad *srcpad = GST_AGGREGATOR_PAD (self->srcpad);
|
|
|
|
switch (self->priv->start_time_selection) {
|
|
case GST_AGGREGATOR_START_TIME_SELECTION_ZERO:
|
|
default:
|
|
start_time = 0;
|
|
break;
|
|
case GST_AGGREGATOR_START_TIME_SELECTION_FIRST:
|
|
GST_OBJECT_LOCK (aggpad);
|
|
if (aggpad->priv->head_segment.format == GST_FORMAT_TIME) {
|
|
start_time = buf_pts;
|
|
if (start_time != -1) {
|
|
start_time = MAX (start_time, aggpad->priv->head_segment.start);
|
|
start_time =
|
|
gst_segment_to_running_time (&aggpad->priv->head_segment,
|
|
GST_FORMAT_TIME, start_time);
|
|
}
|
|
} else {
|
|
start_time = 0;
|
|
GST_WARNING_OBJECT (aggpad,
|
|
"Ignoring request of selecting the first start time "
|
|
"as the segment is a %s segment instead of a time segment",
|
|
gst_format_get_name (aggpad->segment.format));
|
|
}
|
|
GST_OBJECT_UNLOCK (aggpad);
|
|
break;
|
|
case GST_AGGREGATOR_START_TIME_SELECTION_SET:
|
|
start_time = self->priv->start_time;
|
|
if (start_time == -1)
|
|
start_time = 0;
|
|
break;
|
|
}
|
|
|
|
if (start_time != -1) {
|
|
if (srcpad->segment.position == -1)
|
|
srcpad->segment.position = start_time;
|
|
else
|
|
srcpad->segment.position = MIN (start_time, srcpad->segment.position);
|
|
|
|
GST_DEBUG_OBJECT (self, "Selecting start time %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (start_time));
|
|
}
|
|
}
|
|
|
|
PAD_UNLOCK (aggpad);
|
|
GST_OBJECT_UNLOCK (self);
|
|
SRC_UNLOCK (self);
|
|
|
|
GST_DEBUG_OBJECT (aggpad, "Done chaining");
|
|
|
|
return flow_return;
|
|
|
|
flushing:
|
|
PAD_UNLOCK (aggpad);
|
|
|
|
GST_DEBUG_OBJECT (aggpad, "Pad is %s, dropping buffer",
|
|
gst_flow_get_name (flow_return));
|
|
if (buffer)
|
|
gst_buffer_unref (buffer);
|
|
|
|
return flow_return;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_aggregator_pad_chain (GstPad * pad, GstObject * object, GstBuffer * buffer)
|
|
{
|
|
GstFlowReturn ret;
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
|
|
|
|
PAD_FLUSH_LOCK (aggpad);
|
|
|
|
ret = gst_aggregator_pad_chain_internal (GST_AGGREGATOR_CAST (object),
|
|
aggpad, buffer, TRUE);
|
|
|
|
PAD_FLUSH_UNLOCK (aggpad);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_pad_query_func (GstPad * pad, GstObject * parent,
|
|
GstQuery * query)
|
|
{
|
|
GstAggregator *self = GST_AGGREGATOR (parent);
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
|
|
|
|
g_assert (klass->sink_query_pre_queue);
|
|
return klass->sink_query_pre_queue (self, aggpad, query);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_aggregator_pad_event_func (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstAggregator *self = GST_AGGREGATOR (parent);
|
|
GstAggregatorClass *klass = GST_AGGREGATOR_GET_CLASS (self);
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
|
|
|
|
g_assert (klass->sink_event_pre_queue);
|
|
return klass->sink_event_pre_queue (self, aggpad, event);
|
|
}
|
|
|
|
static gboolean
|
|
gst_aggregator_pad_activate_mode_func (GstPad * pad,
|
|
GstObject * parent, GstPadMode mode, gboolean active)
|
|
{
|
|
GstAggregator *self = GST_AGGREGATOR (parent);
|
|
GstAggregatorPad *aggpad = GST_AGGREGATOR_PAD (pad);
|
|
|
|
if (active == FALSE) {
|
|
SRC_LOCK (self);
|
|
gst_aggregator_pad_set_flushing (aggpad, GST_FLOW_FLUSHING, TRUE);
|
|
SRC_BROADCAST (self);
|
|
SRC_UNLOCK (self);
|
|
} else {
|
|
PAD_LOCK (aggpad);
|
|
aggpad->priv->flow_return = GST_FLOW_OK;
|
|
PAD_BROADCAST_EVENT (aggpad);
|
|
PAD_UNLOCK (aggpad);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/***********************************
|
|
* GstAggregatorPad implementation *
|
|
************************************/
|
|
G_DEFINE_TYPE_WITH_PRIVATE (GstAggregatorPad, gst_aggregator_pad, GST_TYPE_PAD);
|
|
|
|
#define DEFAULT_PAD_EMIT_SIGNALS FALSE
|
|
|
|
enum
|
|
{
|
|
PAD_PROP_0,
|
|
PAD_PROP_EMIT_SIGNALS,
|
|
};
|
|
|
|
enum
|
|
{
|
|
PAD_SIGNAL_BUFFER_CONSUMED,
|
|
PAD_LAST_SIGNAL,
|
|
};
|
|
|
|
static guint gst_aggregator_pad_signals[PAD_LAST_SIGNAL] = { 0 };
|
|
|
|
static void
|
|
gst_aggregator_pad_constructed (GObject * object)
|
|
{
|
|
GstPad *pad = GST_PAD (object);
|
|
|
|
if (GST_PAD_IS_SINK (pad)) {
|
|
gst_pad_set_chain_function (pad,
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_pad_chain));
|
|
gst_pad_set_event_full_function_full (pad,
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_pad_event_func), NULL, NULL);
|
|
gst_pad_set_query_function (pad,
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_pad_query_func));
|
|
gst_pad_set_activatemode_function (pad,
|
|
GST_DEBUG_FUNCPTR (gst_aggregator_pad_activate_mode_func));
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_pad_finalize (GObject * object)
|
|
{
|
|
GstAggregatorPad *pad = (GstAggregatorPad *) object;
|
|
|
|
g_cond_clear (&pad->priv->event_cond);
|
|
g_mutex_clear (&pad->priv->flush_lock);
|
|
g_mutex_clear (&pad->priv->lock);
|
|
|
|
G_OBJECT_CLASS (gst_aggregator_pad_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_pad_dispose (GObject * object)
|
|
{
|
|
GstAggregatorPad *pad = (GstAggregatorPad *) object;
|
|
|
|
gst_aggregator_pad_set_flushing (pad, GST_FLOW_FLUSHING, TRUE);
|
|
|
|
G_OBJECT_CLASS (gst_aggregator_pad_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_pad_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstAggregatorPad *pad = GST_AGGREGATOR_PAD (object);
|
|
|
|
switch (prop_id) {
|
|
case PAD_PROP_EMIT_SIGNALS:
|
|
pad->priv->emit_signals = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_pad_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstAggregatorPad *pad = GST_AGGREGATOR_PAD (object);
|
|
|
|
switch (prop_id) {
|
|
case PAD_PROP_EMIT_SIGNALS:
|
|
g_value_set_boolean (value, pad->priv->emit_signals);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_pad_class_init (GstAggregatorPadClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
|
|
gobject_class->constructed = gst_aggregator_pad_constructed;
|
|
gobject_class->finalize = gst_aggregator_pad_finalize;
|
|
gobject_class->dispose = gst_aggregator_pad_dispose;
|
|
gobject_class->set_property = gst_aggregator_pad_set_property;
|
|
gobject_class->get_property = gst_aggregator_pad_get_property;
|
|
|
|
/**
|
|
* GstAggregatorPad:buffer-consumed:
|
|
* @buffer: The buffer that was consumed
|
|
*
|
|
* Signals that a buffer was consumed. As aggregator pads store buffers
|
|
* in an internal queue, there is no direct match between input and output
|
|
* buffers at any given time. This signal can be useful to forward metas
|
|
* such as #GstVideoTimeCodeMeta or #GstVideoCaptionMeta at the right time.
|
|
*
|
|
* Since: 1.16
|
|
*/
|
|
gst_aggregator_pad_signals[PAD_SIGNAL_BUFFER_CONSUMED] =
|
|
g_signal_new ("buffer-consumed", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, GST_TYPE_BUFFER);
|
|
|
|
/**
|
|
* GstAggregatorPad:emit-signals:
|
|
*
|
|
* Enables the emission of signals such as #GstAggregatorPad::buffer-consumed
|
|
*
|
|
* Since: 1.16
|
|
*/
|
|
g_object_class_install_property (gobject_class, PAD_PROP_EMIT_SIGNALS,
|
|
g_param_spec_boolean ("emit-signals", "Emit signals",
|
|
"Send signals to signal data consumption", DEFAULT_PAD_EMIT_SIGNALS,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
}
|
|
|
|
static void
|
|
gst_aggregator_pad_init (GstAggregatorPad * pad)
|
|
{
|
|
pad->priv = gst_aggregator_pad_get_instance_private (pad);
|
|
|
|
g_queue_init (&pad->priv->data);
|
|
g_cond_init (&pad->priv->event_cond);
|
|
|
|
g_mutex_init (&pad->priv->flush_lock);
|
|
g_mutex_init (&pad->priv->lock);
|
|
|
|
gst_aggregator_pad_reset_unlocked (pad);
|
|
pad->priv->negotiated = FALSE;
|
|
pad->priv->emit_signals = DEFAULT_PAD_EMIT_SIGNALS;
|
|
}
|
|
|
|
/* Must be called with the PAD_LOCK held */
|
|
static void
|
|
gst_aggregator_pad_buffer_consumed (GstAggregatorPad * pad, GstBuffer * buffer)
|
|
{
|
|
pad->priv->num_buffers--;
|
|
GST_TRACE_OBJECT (pad, "Consuming buffer %" GST_PTR_FORMAT, buffer);
|
|
if (buffer && pad->priv->emit_signals) {
|
|
g_signal_emit (pad, gst_aggregator_pad_signals[PAD_SIGNAL_BUFFER_CONSUMED],
|
|
0, buffer);
|
|
}
|
|
PAD_BROADCAST_EVENT (pad);
|
|
}
|
|
|
|
/* Must be called with the PAD_LOCK held */
|
|
static void
|
|
gst_aggregator_pad_clip_buffer_unlocked (GstAggregatorPad * pad)
|
|
{
|
|
GstAggregator *self = NULL;
|
|
GstAggregatorClass *aggclass = NULL;
|
|
GstBuffer *buffer = NULL;
|
|
|
|
while (pad->priv->clipped_buffer == NULL &&
|
|
GST_IS_BUFFER (g_queue_peek_tail (&pad->priv->data))) {
|
|
buffer = g_queue_pop_tail (&pad->priv->data);
|
|
|
|
apply_buffer (pad, buffer, FALSE);
|
|
|
|
/* We only take the parent here so that it's not taken if the buffer is
|
|
* already clipped or if the queue is empty.
|
|
*/
|
|
if (self == NULL) {
|
|
self = GST_AGGREGATOR (gst_pad_get_parent_element (GST_PAD (pad)));
|
|
if (self == NULL) {
|
|
gst_buffer_unref (buffer);
|
|
return;
|
|
}
|
|
|
|
aggclass = GST_AGGREGATOR_GET_CLASS (self);
|
|
}
|
|
|
|
if (aggclass->clip) {
|
|
GST_TRACE_OBJECT (pad, "Clipping: %" GST_PTR_FORMAT, buffer);
|
|
|
|
buffer = aggclass->clip (self, pad, buffer);
|
|
|
|
if (buffer == NULL) {
|
|
gst_aggregator_pad_buffer_consumed (pad, buffer);
|
|
GST_TRACE_OBJECT (pad, "Clipping consumed the buffer");
|
|
}
|
|
}
|
|
|
|
pad->priv->clipped_buffer = buffer;
|
|
}
|
|
|
|
if (self)
|
|
gst_object_unref (self);
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_pad_pop_buffer:
|
|
* @pad: the pad to get buffer from
|
|
*
|
|
* Steal the ref to the buffer currently queued in @pad.
|
|
*
|
|
* Returns: (transfer full): The buffer in @pad or NULL if no buffer was
|
|
* queued. You should unref the buffer after usage.
|
|
*/
|
|
GstBuffer *
|
|
gst_aggregator_pad_pop_buffer (GstAggregatorPad * pad)
|
|
{
|
|
GstBuffer *buffer;
|
|
|
|
PAD_LOCK (pad);
|
|
|
|
if (pad->priv->flow_return != GST_FLOW_OK) {
|
|
PAD_UNLOCK (pad);
|
|
return NULL;
|
|
}
|
|
|
|
gst_aggregator_pad_clip_buffer_unlocked (pad);
|
|
|
|
buffer = pad->priv->clipped_buffer;
|
|
|
|
if (buffer) {
|
|
pad->priv->clipped_buffer = NULL;
|
|
gst_aggregator_pad_buffer_consumed (pad, buffer);
|
|
GST_DEBUG_OBJECT (pad, "Consumed: %" GST_PTR_FORMAT, buffer);
|
|
}
|
|
|
|
PAD_UNLOCK (pad);
|
|
|
|
return buffer;
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_pad_drop_buffer:
|
|
* @pad: the pad where to drop any pending buffer
|
|
*
|
|
* Drop the buffer currently queued in @pad.
|
|
*
|
|
* Returns: TRUE if there was a buffer queued in @pad, or FALSE if not.
|
|
*/
|
|
gboolean
|
|
gst_aggregator_pad_drop_buffer (GstAggregatorPad * pad)
|
|
{
|
|
GstBuffer *buf;
|
|
|
|
buf = gst_aggregator_pad_pop_buffer (pad);
|
|
|
|
if (buf == NULL)
|
|
return FALSE;
|
|
|
|
gst_buffer_unref (buf);
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_pad_peek_buffer:
|
|
* @pad: the pad to get buffer from
|
|
*
|
|
* Returns: (transfer full): A reference to the buffer in @pad or
|
|
* NULL if no buffer was queued. You should unref the buffer after
|
|
* usage.
|
|
*/
|
|
GstBuffer *
|
|
gst_aggregator_pad_peek_buffer (GstAggregatorPad * pad)
|
|
{
|
|
GstBuffer *buffer;
|
|
|
|
PAD_LOCK (pad);
|
|
|
|
if (pad->priv->flow_return != GST_FLOW_OK) {
|
|
PAD_UNLOCK (pad);
|
|
return NULL;
|
|
}
|
|
|
|
gst_aggregator_pad_clip_buffer_unlocked (pad);
|
|
|
|
if (pad->priv->clipped_buffer) {
|
|
buffer = gst_buffer_ref (pad->priv->clipped_buffer);
|
|
} else {
|
|
buffer = NULL;
|
|
}
|
|
PAD_UNLOCK (pad);
|
|
|
|
return buffer;
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_pad_has_buffer:
|
|
* @pad: the pad to check the buffer on
|
|
*
|
|
* This checks if a pad has a buffer available that will be returned by
|
|
* a call to gst_aggregator_pad_peek_buffer() or
|
|
* gst_aggregator_pad_pop_buffer().
|
|
*
|
|
* Returns: %TRUE if the pad has a buffer available as the next thing.
|
|
*
|
|
* Since: 1.14.1
|
|
*/
|
|
gboolean
|
|
gst_aggregator_pad_has_buffer (GstAggregatorPad * pad)
|
|
{
|
|
gboolean has_buffer;
|
|
|
|
PAD_LOCK (pad);
|
|
gst_aggregator_pad_clip_buffer_unlocked (pad);
|
|
has_buffer = (pad->priv->clipped_buffer != NULL);
|
|
PAD_UNLOCK (pad);
|
|
|
|
return has_buffer;
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_pad_is_eos:
|
|
* @pad: an aggregator pad
|
|
*
|
|
* Returns: %TRUE if the pad is EOS, otherwise %FALSE.
|
|
*/
|
|
gboolean
|
|
gst_aggregator_pad_is_eos (GstAggregatorPad * pad)
|
|
{
|
|
gboolean is_eos;
|
|
|
|
PAD_LOCK (pad);
|
|
is_eos = pad->priv->eos;
|
|
PAD_UNLOCK (pad);
|
|
|
|
return is_eos;
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* gst_aggregator_merge_tags:
|
|
* @self: a #GstAggregator
|
|
* @tags: a #GstTagList to merge
|
|
* @mode: the #GstTagMergeMode to use
|
|
*
|
|
* Adds tags to so-called pending tags, which will be processed
|
|
* before pushing out data downstream.
|
|
*
|
|
* Note that this is provided for convenience, and the subclass is
|
|
* not required to use this and can still do tag handling on its own.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
void
|
|
gst_aggregator_merge_tags (GstAggregator * self,
|
|
const GstTagList * tags, GstTagMergeMode mode)
|
|
{
|
|
GstTagList *otags;
|
|
|
|
g_return_if_fail (GST_IS_AGGREGATOR (self));
|
|
g_return_if_fail (tags == NULL || GST_IS_TAG_LIST (tags));
|
|
|
|
/* FIXME Check if we can use OBJECT lock here! */
|
|
GST_OBJECT_LOCK (self);
|
|
if (tags)
|
|
GST_DEBUG_OBJECT (self, "merging tags %" GST_PTR_FORMAT, tags);
|
|
otags = self->priv->tags;
|
|
self->priv->tags = gst_tag_list_merge (self->priv->tags, tags, mode);
|
|
if (otags)
|
|
gst_tag_list_unref (otags);
|
|
self->priv->tags_changed = TRUE;
|
|
GST_OBJECT_UNLOCK (self);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* gst_aggregator_set_latency:
|
|
* @self: a #GstAggregator
|
|
* @min_latency: minimum latency
|
|
* @max_latency: maximum latency
|
|
*
|
|
* Lets #GstAggregator sub-classes tell the baseclass what their internal
|
|
* latency is. Will also post a LATENCY message on the bus so the pipeline
|
|
* can reconfigure its global latency.
|
|
*/
|
|
void
|
|
gst_aggregator_set_latency (GstAggregator * self,
|
|
GstClockTime min_latency, GstClockTime max_latency)
|
|
{
|
|
gboolean changed = FALSE;
|
|
|
|
g_return_if_fail (GST_IS_AGGREGATOR (self));
|
|
g_return_if_fail (GST_CLOCK_TIME_IS_VALID (min_latency));
|
|
g_return_if_fail (max_latency >= min_latency);
|
|
|
|
SRC_LOCK (self);
|
|
if (self->priv->sub_latency_min != min_latency) {
|
|
self->priv->sub_latency_min = min_latency;
|
|
changed = TRUE;
|
|
}
|
|
if (self->priv->sub_latency_max != max_latency) {
|
|
self->priv->sub_latency_max = max_latency;
|
|
changed = TRUE;
|
|
}
|
|
|
|
if (changed)
|
|
SRC_BROADCAST (self);
|
|
SRC_UNLOCK (self);
|
|
|
|
if (changed) {
|
|
gst_element_post_message (GST_ELEMENT_CAST (self),
|
|
gst_message_new_latency (GST_OBJECT_CAST (self)));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_get_buffer_pool:
|
|
* @self: a #GstAggregator
|
|
*
|
|
* Returns: (transfer full): the instance of the #GstBufferPool used
|
|
* by @trans; free it after use it
|
|
*/
|
|
GstBufferPool *
|
|
gst_aggregator_get_buffer_pool (GstAggregator * self)
|
|
{
|
|
GstBufferPool *pool;
|
|
|
|
g_return_val_if_fail (GST_IS_AGGREGATOR (self), NULL);
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
pool = self->priv->pool;
|
|
if (pool)
|
|
gst_object_ref (pool);
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
return pool;
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_get_allocator:
|
|
* @self: a #GstAggregator
|
|
* @allocator: (out) (allow-none) (transfer full): the #GstAllocator
|
|
* used
|
|
* @params: (out) (allow-none) (transfer full): the
|
|
* #GstAllocationParams of @allocator
|
|
*
|
|
* Lets #GstAggregator sub-classes get the memory @allocator
|
|
* acquired by the base class and its @params.
|
|
*
|
|
* Unref the @allocator after use it.
|
|
*/
|
|
void
|
|
gst_aggregator_get_allocator (GstAggregator * self,
|
|
GstAllocator ** allocator, GstAllocationParams * params)
|
|
{
|
|
g_return_if_fail (GST_IS_AGGREGATOR (self));
|
|
|
|
if (allocator)
|
|
*allocator = self->priv->allocator ?
|
|
gst_object_ref (self->priv->allocator) : NULL;
|
|
|
|
if (params)
|
|
*params = self->priv->allocation_params;
|
|
}
|
|
|
|
/**
|
|
* gst_aggregator_simple_get_next_time:
|
|
* @self: A #GstAggregator
|
|
*
|
|
* This is a simple #GstAggregatorClass.get_next_time() implementation that
|
|
* just looks at the #GstSegment on the srcpad of the aggregator and bases
|
|
* the next time on the running time there.
|
|
*
|
|
* This is the desired behaviour in most cases where you have a live source
|
|
* and you have a dead line based aggregator subclass.
|
|
*
|
|
* Returns: The running time based on the position
|
|
*
|
|
* Since: 1.16
|
|
*/
|
|
GstClockTime
|
|
gst_aggregator_simple_get_next_time (GstAggregator * self)
|
|
{
|
|
GstClockTime next_time;
|
|
GstAggregatorPad *srcpad = GST_AGGREGATOR_PAD (self->srcpad);
|
|
GstSegment *segment = &srcpad->segment;
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
if (segment->position == -1 || segment->position < segment->start)
|
|
next_time = segment->start;
|
|
else
|
|
next_time = segment->position;
|
|
|
|
if (segment->stop != -1 && next_time > segment->stop)
|
|
next_time = segment->stop;
|
|
|
|
next_time = gst_segment_to_running_time (segment, GST_FORMAT_TIME, next_time);
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
return next_time;
|
|
}
|