gstreamer/gst/playback/gstplaybasebin.h
Ronald S. Bultje c414d6277b gst/playback/gstplaybasebin.*: Implement buffering. Needs some more work.
Original commit message from CVS:
* gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init),
(probe_triggered), (check_queue), (buffer_underrun),
(buffer_running), (buffer_overrun), (gen_source_element),
(setup_source):
* gst/playback/gstplaybasebin.h:
Implement buffering. Needs some more work.
2004-11-26 12:31:05 +00:00

123 lines
4 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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_PLAYBASEBIN_H__
#define __GST_PLAYBASEBIN_H__
#include <gst/gst.h>
#include "gststreaminfo.h"
G_BEGIN_DECLS
#define GST_TYPE_PLAY_BASE_BIN (gst_play_base_bin_get_type())
#define GST_PLAY_BASE_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BASE_BIN,GstPlayBaseBin))
#define GST_PLAY_BASE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BASE_BIN,GstPlayBaseBinClass))
#define GST_IS_PLAY_BASE_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BASE_BIN))
#define GST_IS_PLAY_BASE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BASE_BIN))
typedef struct _GstPlayBaseBin GstPlayBaseBin;
typedef struct _GstPlayBaseBinClass GstPlayBaseBinClass;
/* a GstPlayBaseGroup is a group of pads and streaminfo that together
* make up a playable stream. A new group is created from the current
* set of pads that are alive when the preroll elements are filled or
* when the no-more-pads signal is fired.
*
* We have to queue the groups as they can be created while the preroll
* queues are still playing the old group. We monitor the EOS signals
* on the preroll queues and when all the streams in the current group
* have EOSed, we switch to the next queued group.
*/
typedef struct
{
GstPlayBaseBin *bin; /* ref to the owner */
gint nstreams;
GList *streaminfo;
gint naudiopads;
gint nvideopads;
gint nunknownpads;
GList *preroll_elems;
} GstPlayBaseGroup;
struct _GstPlayBaseBin {
GstBin bin;
/* properties */
gboolean threaded;
guint64 queue_size;
/* internal thread */
GstElement *thread;
gchar *uri;
GstElement *source;
GstElement *decoder;
gboolean need_rebuild;
/* group management */
GMutex *group_lock; /* lock and mutex to signal availability of new group */
GCond *group_cond;
GstPlayBaseGroup *building_group; /* the group that we are constructing */
GList *queued_groups; /* the constructed groups, head is the active one */
/* list of usable factories */
GList *factories;
};
struct _GstPlayBaseBinClass {
GstBinClass parent_class;
/* signals */
void (*setup_output_pads) (GstPlayBaseBin *play_base_bin);
void (*removed_output_pad) (GstPlayBaseBin *play_base_bin,
GstStreamInfo *info);
/* 0: buf=empty (underrun) - will re-cache,
* 100: buf=full (overrun) - will flush head of cache (latency) */
void (*buffering) (GstPlayBaseBin *play_base_bin,
gint percentage);
/* action signals */
gboolean (*link_stream) (GstPlayBaseBin *play_base_bin,
GstStreamInfo *info,
GstPad *pad);
void (*unlink_stream) (GstPlayBaseBin *play_base_bin,
GstStreamInfo *info);
};
GType gst_play_base_bin_get_type (void);
gint gst_play_base_bin_get_nstreams (GstPlayBaseBin *play_base_bin);
const GList* gst_play_base_bin_get_streaminfo (GstPlayBaseBin *play_base_bin);
gint gst_play_base_bin_get_nstreams_of_type (GstPlayBaseBin *play_base_bin,
GstStreamType type);
gboolean gst_play_base_bin_link_stream (GstPlayBaseBin *play_base_bin,
GstStreamInfo *info,
GstPad *pad);
void gst_play_base_bin_unlink_stream (GstPlayBaseBin *play_base_bin,
GstStreamInfo *info);
G_END_DECLS
#endif /* __GST_PLAYBASEBIN_H__ */