gstreamer/plugins/elements/gstinputselector.h
Andre Moreira Magalhaes (andrunko) cd798a0a52 inputselector: Properly sync when changing streams
This adds properties to use the clock time for deciding when
to drop buffers for inactive pads and a property to buffer all
not rendered buffers for the active pad to allow pad switching
without losing any buffers at all.
2012-05-31 11:49:29 +02:00

96 lines
3.3 KiB
C

/* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2008 Nokia Corporation. (contact <stefan.kost@nokia.com>)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_INPUT_SELECTOR_H__
#define __GST_INPUT_SELECTOR_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_INPUT_SELECTOR \
(gst_input_selector_get_type())
#define GST_INPUT_SELECTOR(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_INPUT_SELECTOR, GstInputSelector))
#define GST_INPUT_SELECTOR_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_INPUT_SELECTOR, GstInputSelectorClass))
#define GST_IS_INPUT_SELECTOR(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_INPUT_SELECTOR))
#define GST_IS_INPUT_SELECTOR_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_INPUT_SELECTOR))
typedef struct _GstInputSelector GstInputSelector;
typedef struct _GstInputSelectorClass GstInputSelectorClass;
#define GST_INPUT_SELECTOR_GET_LOCK(sel) (((GstInputSelector*)(sel))->lock)
#define GST_INPUT_SELECTOR_GET_COND(sel) (((GstInputSelector*)(sel))->cond)
#define GST_INPUT_SELECTOR_LOCK(sel) (g_mutex_lock (GST_INPUT_SELECTOR_GET_LOCK(sel)))
#define GST_INPUT_SELECTOR_UNLOCK(sel) (g_mutex_unlock (GST_INPUT_SELECTOR_GET_LOCK(sel)))
#define GST_INPUT_SELECTOR_WAIT(sel) (g_cond_wait (GST_INPUT_SELECTOR_GET_COND(sel), \
GST_INPUT_SELECTOR_GET_LOCK(sel)))
#define GST_INPUT_SELECTOR_BROADCAST(sel) (g_cond_broadcast (GST_INPUT_SELECTOR_GET_COND(sel)))
/**
* GstInputSelectorSyncMode:
* @GST_INPUT_SELECTOR_SYNC_MODE_ACTIVE_SEGMENT: Sync using the current active segment.
* @GST_INPUT_SELECTOR_SYNC_MODE_CLOCK: Sync using the clock.
*
* The different ways that input-selector can behave when in sync-streams mode.
*/
typedef enum {
GST_INPUT_SELECTOR_SYNC_MODE_ACTIVE_SEGMENT,
GST_INPUT_SELECTOR_SYNC_MODE_CLOCK
} GstInputSelectorSyncMode;
struct _GstInputSelector {
GstElement element;
GstPad *srcpad;
GstPad *active_sinkpad;
guint n_pads;
guint padcount;
gboolean sync_streams;
GstInputSelectorSyncMode sync_mode;
gboolean cache_buffers;
GstSegment segment; /* the output segment */
gboolean pending_close; /* if we should push a close first */
GMutex *lock;
GCond *cond;
gboolean blocked;
gboolean flushing;
};
struct _GstInputSelectorClass {
GstElementClass parent_class;
gint64 (*block) (GstInputSelector *self);
void (*switch_) (GstInputSelector *self, GstPad *pad,
gint64 stop_time, gint64 start_time);
};
GType gst_input_selector_get_type (void);
G_END_DECLS
#endif /* __GST_INPUT_SELECTOR_H__ */