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c414d6277b
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.
123 lines
4 KiB
C
123 lines
4 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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_PLAYBASEBIN_H__
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#define __GST_PLAYBASEBIN_H__
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#include <gst/gst.h>
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#include "gststreaminfo.h"
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G_BEGIN_DECLS
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#define GST_TYPE_PLAY_BASE_BIN (gst_play_base_bin_get_type())
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#define GST_PLAY_BASE_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BASE_BIN,GstPlayBaseBin))
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#define GST_PLAY_BASE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BASE_BIN,GstPlayBaseBinClass))
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#define GST_IS_PLAY_BASE_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BASE_BIN))
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#define GST_IS_PLAY_BASE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BASE_BIN))
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typedef struct _GstPlayBaseBin GstPlayBaseBin;
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typedef struct _GstPlayBaseBinClass GstPlayBaseBinClass;
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/* a GstPlayBaseGroup is a group of pads and streaminfo that together
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* make up a playable stream. A new group is created from the current
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* set of pads that are alive when the preroll elements are filled or
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* when the no-more-pads signal is fired.
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*
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* We have to queue the groups as they can be created while the preroll
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* queues are still playing the old group. We monitor the EOS signals
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* on the preroll queues and when all the streams in the current group
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* have EOSed, we switch to the next queued group.
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*/
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typedef struct
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{
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GstPlayBaseBin *bin; /* ref to the owner */
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gint nstreams;
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GList *streaminfo;
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gint naudiopads;
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gint nvideopads;
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gint nunknownpads;
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GList *preroll_elems;
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} GstPlayBaseGroup;
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struct _GstPlayBaseBin {
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GstBin bin;
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/* properties */
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gboolean threaded;
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guint64 queue_size;
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/* internal thread */
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GstElement *thread;
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gchar *uri;
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GstElement *source;
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GstElement *decoder;
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gboolean need_rebuild;
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/* group management */
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GMutex *group_lock; /* lock and mutex to signal availability of new group */
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GCond *group_cond;
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GstPlayBaseGroup *building_group; /* the group that we are constructing */
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GList *queued_groups; /* the constructed groups, head is the active one */
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/* list of usable factories */
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GList *factories;
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};
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struct _GstPlayBaseBinClass {
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GstBinClass parent_class;
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/* signals */
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void (*setup_output_pads) (GstPlayBaseBin *play_base_bin);
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void (*removed_output_pad) (GstPlayBaseBin *play_base_bin,
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GstStreamInfo *info);
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/* 0: buf=empty (underrun) - will re-cache,
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* 100: buf=full (overrun) - will flush head of cache (latency) */
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void (*buffering) (GstPlayBaseBin *play_base_bin,
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gint percentage);
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/* action signals */
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gboolean (*link_stream) (GstPlayBaseBin *play_base_bin,
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GstStreamInfo *info,
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GstPad *pad);
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void (*unlink_stream) (GstPlayBaseBin *play_base_bin,
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GstStreamInfo *info);
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};
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GType gst_play_base_bin_get_type (void);
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gint gst_play_base_bin_get_nstreams (GstPlayBaseBin *play_base_bin);
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const GList* gst_play_base_bin_get_streaminfo (GstPlayBaseBin *play_base_bin);
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gint gst_play_base_bin_get_nstreams_of_type (GstPlayBaseBin *play_base_bin,
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GstStreamType type);
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gboolean gst_play_base_bin_link_stream (GstPlayBaseBin *play_base_bin,
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GstStreamInfo *info,
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GstPad *pad);
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void gst_play_base_bin_unlink_stream (GstPlayBaseBin *play_base_bin,
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GstStreamInfo *info);
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G_END_DECLS
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#endif /* __GST_PLAYBASEBIN_H__ */
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