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56d9730d20
Original commit message from CVS: * gst/gstbin.c: (bin_element_is_sink), (has_ancestor), (bin_element_is_semi_sink), (append_child), (gst_bin_change_state): * gst/gstpad.c: (gst_pad_set_active), (gst_pad_link_prepare), (gst_pad_link), (gst_pad_accept_caps), (gst_pad_query), (gst_pad_send_event), (gst_pad_start_task): * gst/gstqueue.c: (gst_queue_init), (gst_queue_locked_flush), (gst_queue_handle_sink_event), (gst_queue_chain), (gst_queue_loop), (gst_queue_sink_activate), (gst_queue_src_activate), (gst_queue_change_state): * gst/gstqueue.h: Fix state changes for non sinks. We now change sinks, then elements with unconnected srcpads, then the rest. More efficient queue unlocking in flush and state changes. Set the pad activate mode even if it does not have an activate function.
109 lines
3 KiB
C
109 lines
3 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstqueue.h:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_QUEUE_H__
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#define __GST_QUEUE_H__
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#include <gst/gstelement.h>
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G_BEGIN_DECLS
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#define GST_TYPE_QUEUE \
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(gst_queue_get_type())
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#define GST_QUEUE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUEUE,GstQueue))
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#define GST_QUEUE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE,GstQueueClass))
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#define GST_IS_QUEUE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUEUE))
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#define GST_IS_QUEUE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUEUE))
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enum {
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GST_QUEUE_NO_LEAK = 0,
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GST_QUEUE_LEAK_UPSTREAM = 1,
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GST_QUEUE_LEAK_DOWNSTREAM = 2
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};
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typedef struct _GstQueue GstQueue;
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typedef struct _GstQueueSize GstQueueSize;
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typedef struct _GstQueueClass GstQueueClass;
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struct _GstQueueSize {
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guint buffers; /* no. of buffers */
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guint bytes; /* no. of bytes */
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guint64 time; /* amount of time */
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};
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struct _GstQueue {
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GstElement element;
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GstPad *sinkpad;
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GstPad *srcpad;
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/* the queue of data we're keeping our grubby hands on */
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GQueue *queue;
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GstQueueSize
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cur_level, /* currently in the queue */
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max_size, /* max. amount of data allowed in the queue */
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min_threshold; /* min. amount of data required to wake reader */
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/* whether we leak data, and at which end */
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gint leaky;
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/* number of nanoseconds until a blocked queue 'times out'
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* to receive data and returns a filler event. -1 = disable */
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guint64 block_timeout;
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/* it the queue should fail on possible deadlocks */
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gboolean may_deadlock;
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gboolean flushing;
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GMutex *qlock; /* lock for queue (vs object lock) */
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GCond *item_add; /* signals buffers now available for reading */
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GCond *item_del; /* signals space now available for writing */
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstQueueClass {
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GstElementClass parent_class;
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/* signals - 'running' is called from both sides
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* which might make it sort of non-useful... */
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void (*underrun) (GstQueue *queue);
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void (*running) (GstQueue *queue);
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void (*overrun) (GstQueue *queue);
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_queue_get_type (void);
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G_END_DECLS
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#endif /* __GST_QUEUE_H__ */
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