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134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
/* GStreamer
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*
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* SPDX-License-Identifier: LGPL-2.1
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*
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* Copyright (C) 2023 Collabora Ltd.
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/base/gstdataqueue.h>
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#include <gst/mse/mse-prelude.h>
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#include "gstmseeventqueue-private.h"
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struct _GstMseEventQueue
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{
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GstObject parent_instance;
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GstMseEventQueueCallback callback;
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gpointer user_data;
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GstTask *task;
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GRecMutex lock;
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GstDataQueue *queue;
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};
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G_DEFINE_TYPE (GstMseEventQueue, gst_mse_event_queue, GST_TYPE_OBJECT);
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GstMseEventQueue *
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gst_mse_event_queue_new (GstMseEventQueueCallback callback, gpointer user_data)
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{
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g_return_val_if_fail (callback != NULL, NULL);
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GstMseEventQueue *self = g_object_new (GST_TYPE_MSE_EVENT_QUEUE, NULL);
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self->callback = callback;
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self->user_data = user_data;
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gst_task_start (self->task);
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return g_object_ref_sink (self);
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}
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static void
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gst_mse_background_event_queue_dispose (GObject * obj)
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{
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GstMseEventQueue *self = GST_MSE_EVENT_QUEUE (obj);
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gst_data_queue_set_flushing (self->queue, TRUE);
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gst_data_queue_flush (self->queue);
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G_OBJECT_CLASS (gst_mse_event_queue_parent_class)->dispose (obj);
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}
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static void
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gst_mse_background_event_queue_finalize (GObject * obj)
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{
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GstMseEventQueue *self = GST_MSE_EVENT_QUEUE (obj);
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gst_task_join (self->task);
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g_rec_mutex_clear (&self->lock);
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gst_clear_object (&self->task);
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gst_clear_object (&self->queue);
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G_OBJECT_CLASS (gst_mse_event_queue_parent_class)->finalize (obj);
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}
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void
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gst_mse_event_queue_class_init (GstMseEventQueueClass * klass)
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{
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GObjectClass *oclass = G_OBJECT_CLASS (klass);
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oclass->dispose = GST_DEBUG_FUNCPTR (gst_mse_background_event_queue_dispose);
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oclass->finalize =
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GST_DEBUG_FUNCPTR (gst_mse_background_event_queue_finalize);
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}
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static void
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task_func (GstMseEventQueue * self)
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{
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GstTask *task = self->task;
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GstDataQueue *queue = self->queue;
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GstDataQueueItem *item = NULL;
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if (!gst_data_queue_pop (queue, &item)) {
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gst_task_stop (task);
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return;
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}
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self->callback (item, self->user_data);
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if (item->destroy) {
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item->destroy (item);
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}
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}
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static gboolean
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never_full (GstDataQueue * queue, guint visible, guint bytes, guint64 time,
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gpointer user_data)
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{
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return FALSE;
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}
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void
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gst_mse_event_queue_init (GstMseEventQueue * self)
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{
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self->queue = gst_data_queue_new (never_full, NULL, NULL, NULL);
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self->task = gst_task_new ((GstTaskFunction) task_func, self, NULL);
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g_rec_mutex_init (&self->lock);
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gst_task_set_lock (self->task, &self->lock);
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}
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gboolean
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gst_mse_event_queue_push (GstMseEventQueue * self, GstDataQueueItem * item)
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{
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g_return_val_if_fail (GST_IS_MSE_EVENT_QUEUE (self), FALSE);
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g_return_val_if_fail (item != NULL, FALSE);
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return gst_data_queue_push (self->queue, item);
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}
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