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be1f48de3a
Original commit message from CVS: * docs/design/part-element-sink.txt: Updated document. * libs/gst/base/gstbasesink.c: (gst_base_sink_init), (gst_base_sink_finalize), (gst_base_sink_preroll_queue_flush), (gst_base_sink_configure_segment), (gst_base_sink_commit_state), (gst_base_sink_get_sync_times), (gst_base_sink_wait_clock), (gst_base_sink_do_sync), (gst_base_sink_render_object), (gst_base_sink_preroll_object), (gst_base_sink_queue_object_unlocked), (gst_base_sink_queue_object), (gst_base_sink_event), (gst_base_sink_chain_unlocked), (gst_base_sink_chain), (gst_base_sink_loop), (gst_base_sink_activate_pull), (gst_base_sink_get_position), (gst_base_sink_change_state): * libs/gst/base/gstbasesink.h: Totally refactored matching the design doc. Use two segments, one to clip incomming buffers and another to perform sync. Handle queueing correctly, bypass the queue when playing. Make EOS cancelable. Handle errors correctly when operating in pull based mode. * tests/check/elements/fakesink.c: (GST_START_TEST), (fakesink_suite): Added new check for sinks.
140 lines
4.3 KiB
C
140 lines
4.3 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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* gstbasesink.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_BASE_SINK_H__
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#define __GST_BASE_SINK_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_BASE_SINK (gst_base_sink_get_type())
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#define GST_BASE_SINK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_SINK,GstBaseSink))
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#define GST_BASE_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_SINK,GstBaseSinkClass))
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#define GST_BASE_SINK_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_BASE_SINK, GstBaseSinkClass))
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#define GST_IS_BASE_SINK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_SINK))
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#define GST_IS_BASE_SINK_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_SINK))
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#define GST_BASE_SINK_CAST(obj) ((GstBaseSink *) (obj))
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/**
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* GST_BASE_SINK_PAD:
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* @obj: base sink instance
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*
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* Gives the pointer to the #GstPad object of the element.
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*/
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#define GST_BASE_SINK_PAD(obj) (GST_BASE_SINK_CAST (obj)->sinkpad)
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typedef struct _GstBaseSink GstBaseSink;
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typedef struct _GstBaseSinkClass GstBaseSinkClass;
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/**
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* GstBaseSink:
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* @element: the parent element.
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*
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* The opaque #GstBaseSink data structure.
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*/
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struct _GstBaseSink {
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GstElement element;
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/*< protected >*/
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GstPad *sinkpad;
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GstActivateMode pad_mode;
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/*< protected >*/ /* with LOCK */
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guint64 offset;
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gboolean can_activate_pull;
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gboolean can_activate_push;
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/*< protected >*/ /* with PREROLL_LOCK */
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GQueue *preroll_queue;
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gint preroll_queue_max_len;
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gint preroll_queued;
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gint buffers_queued;
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gint events_queued;
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gboolean eos;
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gboolean eos_queued;
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gboolean need_preroll;
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gboolean have_preroll;
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gboolean playing_async;
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/*< protected >*/ /* with STREAM_LOCK */
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gboolean have_newsegment;
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GstSegment segment;
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/*< private >*/ /* with LOCK */
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GstClockID clock_id;
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GstClockTime end_time;
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gboolean sync;
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gboolean flushing;
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/*< private >*/
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union {
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struct {
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/* segment used for clipping incomming buffers */
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GstSegment *clip_segment;
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} ABI;
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/* adding + 0 to mark ABI change to be undone later */
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gpointer _gst_reserved[GST_PADDING_LARGE + 0];
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} abidata;
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};
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struct _GstBaseSinkClass {
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GstElementClass parent_class;
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/* get caps from subclass */
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GstCaps* (*get_caps) (GstBaseSink *sink);
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/* notify subclass of new caps */
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gboolean (*set_caps) (GstBaseSink *sink, GstCaps *caps);
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/* allocate a new buffer with given caps */
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GstFlowReturn (*buffer_alloc) (GstBaseSink *sink, guint64 offset, guint size,
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GstCaps *caps, GstBuffer **buf);
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/* get the start and end times for syncing on this buffer */
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void (*get_times) (GstBaseSink *sink, GstBuffer *buffer,
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GstClockTime *start, GstClockTime *end);
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/* start and stop processing, ideal for opening/closing the resource */
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gboolean (*start) (GstBaseSink *sink);
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gboolean (*stop) (GstBaseSink *sink);
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/* unlock any pending access to the resource. subclasses should unlock
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* any function ASAP. */
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gboolean (*unlock) (GstBaseSink *sink);
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/* notify subclass of event, preroll buffer or real buffer */
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gboolean (*event) (GstBaseSink *sink, GstEvent *event);
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GstFlowReturn (*preroll) (GstBaseSink *sink, GstBuffer *buffer);
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GstFlowReturn (*render) (GstBaseSink *sink, GstBuffer *buffer);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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GType gst_base_sink_get_type(void);
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G_END_DECLS
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#endif /* __GST_BASE_SINK_H__ */
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