mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-11 19:06:33 +00:00
235 lines
9.6 KiB
C
235 lines
9.6 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstbasesink.h:
|
|
*
|
|
* 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_BASE_SINK_H__
|
|
#define __GST_BASE_SINK_H__
|
|
|
|
#include <gst/gst.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
|
|
#define GST_TYPE_BASE_SINK (gst_base_sink_get_type())
|
|
#define GST_BASE_SINK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_SINK,GstBaseSink))
|
|
#define GST_BASE_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_SINK,GstBaseSinkClass))
|
|
#define GST_BASE_SINK_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_BASE_SINK, GstBaseSinkClass))
|
|
#define GST_IS_BASE_SINK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_SINK))
|
|
#define GST_IS_BASE_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_SINK))
|
|
#define GST_BASE_SINK_CAST(obj) ((GstBaseSink *) (obj))
|
|
|
|
/**
|
|
* GST_BASE_SINK_PAD:
|
|
* @obj: base sink instance
|
|
*
|
|
* Gives the pointer to the #GstPad object of the element.
|
|
*/
|
|
#define GST_BASE_SINK_PAD(obj) (GST_BASE_SINK_CAST (obj)->sinkpad)
|
|
|
|
typedef struct _GstBaseSink GstBaseSink;
|
|
typedef struct _GstBaseSinkClass GstBaseSinkClass;
|
|
typedef struct _GstBaseSinkPrivate GstBaseSinkPrivate;
|
|
|
|
/**
|
|
* GstBaseSink:
|
|
*
|
|
* The opaque #GstBaseSink data structure.
|
|
*/
|
|
struct _GstBaseSink {
|
|
GstElement element;
|
|
|
|
/*< protected >*/
|
|
GstPad *sinkpad;
|
|
GstActivateMode pad_mode;
|
|
|
|
/*< protected >*/ /* with LOCK */
|
|
guint64 offset;
|
|
gboolean can_activate_pull;
|
|
gboolean can_activate_push;
|
|
|
|
/*< protected >*/ /* with PREROLL_LOCK */
|
|
GQueue *preroll_queue;
|
|
gint preroll_queue_max_len; /* FIXME-0.11: the property is guint */
|
|
gint preroll_queued;
|
|
gint buffers_queued;
|
|
gint events_queued;
|
|
gboolean eos;
|
|
gboolean eos_queued;
|
|
gboolean need_preroll;
|
|
gboolean have_preroll;
|
|
gboolean playing_async;
|
|
|
|
/*< protected >*/ /* with STREAM_LOCK */
|
|
gboolean have_newsegment;
|
|
GstSegment segment;
|
|
GstSegment *clip_segment;
|
|
|
|
/*< private >*/ /* with LOCK */
|
|
GstClockID clock_id;
|
|
GstClockTime end_time;
|
|
gboolean sync;
|
|
gboolean flushing;
|
|
gboolean running;
|
|
|
|
gint64 max_lateness;
|
|
|
|
/*< private >*/
|
|
GstBaseSinkPrivate *priv;
|
|
|
|
gpointer _gst_reserved[GST_PADDING_LARGE];
|
|
};
|
|
|
|
/**
|
|
* GstBaseSinkClass:
|
|
* @parent_class: Element parent class
|
|
* @get_caps: Called to get sink pad caps from the subclass
|
|
* @set_caps: Notify subclass of changed caps
|
|
* @buffer_alloc: Subclasses can override to perform custom buffer allocations
|
|
* @get_times: Called to get the start and end times for synchronising
|
|
* the passed buffer to the clock
|
|
* @start: Start processing. Ideal for opening resources in the subclass
|
|
* @stop: Stop processing. Subclasses should use this to close resources.
|
|
* @unlock: Unlock any pending access to the resource. Subclasses should
|
|
* unblock any blocked function ASAP
|
|
* @unlock_stop: Clear the previous unlock request. Subclasses should clear
|
|
* any state they set during unlock(), such as clearing command queues.
|
|
* @event: Override this to handle events arriving on the sink pad
|
|
* @preroll: Called to present the preroll buffer if desired
|
|
* @render: Called when a buffer should be presented or output, at the
|
|
* correct moment if the #GstBaseSink has been set to sync to the clock.
|
|
* @render_list: Same as @render but used whith buffer lists instead of
|
|
* buffers. Since: 0.10.24
|
|
* @async_play: Subclasses should override this when they need to perform
|
|
* special processing when changing to the PLAYING state asynchronously.
|
|
* Called with the OBJECT_LOCK held.
|
|
* @activate_pull: Subclasses should override this when they can provide an
|
|
* alternate method of spawning a thread to drive the pipeline in pull mode.
|
|
* Should start or stop the pulling thread, depending on the value of the
|
|
* "active" argument. Called after actually activating the sink pad in pull
|
|
* mode. The default implementation starts a task on the sink pad.
|
|
* @fixate: Only useful in pull mode, this vmethod will be called in response to
|
|
* gst_pad_fixate_caps() being called on the sink pad. Implement if you have
|
|
* ideas about what should be the default values for the caps you support.
|
|
*
|
|
* Subclasses can override any of the available virtual methods or not, as
|
|
* needed. At the minimum, the @render method should be overridden to
|
|
* output/present buffers.
|
|
*/
|
|
struct _GstBaseSinkClass {
|
|
GstElementClass parent_class;
|
|
|
|
/* get caps from subclass */
|
|
GstCaps* (*get_caps) (GstBaseSink *sink);
|
|
/* notify subclass of new caps */
|
|
gboolean (*set_caps) (GstBaseSink *sink, GstCaps *caps);
|
|
|
|
/* fixate sink caps during pull-mode negotiation */
|
|
void (*fixate) (GstBaseSink *sink, GstCaps *caps);
|
|
/* start or stop a pulling thread */
|
|
gboolean (*activate_pull)(GstBaseSink *sink, gboolean active);
|
|
|
|
/* allocate a new buffer with given caps */
|
|
GstFlowReturn (*buffer_alloc) (GstBaseSink *sink, guint64 offset, guint size,
|
|
GstCaps *caps, GstBuffer **buf);
|
|
|
|
/* get the start and end times for syncing on this buffer */
|
|
void (*get_times) (GstBaseSink *sink, GstBuffer *buffer,
|
|
GstClockTime *start, GstClockTime *end);
|
|
|
|
/* start and stop processing, ideal for opening/closing the resource */
|
|
gboolean (*start) (GstBaseSink *sink);
|
|
gboolean (*stop) (GstBaseSink *sink);
|
|
|
|
/* unlock any pending access to the resource. subclasses should unlock
|
|
* any function ASAP. */
|
|
gboolean (*unlock) (GstBaseSink *sink);
|
|
/* Clear a previously indicated unlock request not that unlocking is
|
|
* complete. Sub-classes should clear any command queue or indicator they
|
|
* set during unlock */
|
|
gboolean (*unlock_stop) (GstBaseSink *sink);
|
|
|
|
/* notify subclass of event, preroll buffer or real buffer */
|
|
gboolean (*event) (GstBaseSink *sink, GstEvent *event);
|
|
|
|
GstFlowReturn (*preroll) (GstBaseSink *sink, GstBuffer *buffer);
|
|
GstFlowReturn (*render) (GstBaseSink *sink, GstBuffer *buffer);
|
|
/* Render a BufferList */
|
|
GstFlowReturn (*render_list) (GstBaseSink *sink, GstBufferList *buffer_list);
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING_LARGE];
|
|
};
|
|
|
|
GType gst_base_sink_get_type(void);
|
|
|
|
GstFlowReturn gst_base_sink_do_preroll (GstBaseSink *sink, GstMiniObject *obj);
|
|
GstFlowReturn gst_base_sink_wait_preroll (GstBaseSink *sink);
|
|
|
|
/* synchronizing against the clock */
|
|
void gst_base_sink_set_sync (GstBaseSink *sink, gboolean sync);
|
|
gboolean gst_base_sink_get_sync (GstBaseSink *sink);
|
|
|
|
/* dropping late buffers */
|
|
void gst_base_sink_set_max_lateness (GstBaseSink *sink, gint64 max_lateness);
|
|
gint64 gst_base_sink_get_max_lateness (GstBaseSink *sink);
|
|
|
|
/* performing QoS */
|
|
void gst_base_sink_set_qos_enabled (GstBaseSink *sink, gboolean enabled);
|
|
gboolean gst_base_sink_is_qos_enabled (GstBaseSink *sink);
|
|
|
|
/* doing async state changes */
|
|
void gst_base_sink_set_async_enabled (GstBaseSink *sink, gboolean enabled);
|
|
gboolean gst_base_sink_is_async_enabled (GstBaseSink *sink);
|
|
|
|
/* tuning synchronisation */
|
|
void gst_base_sink_set_ts_offset (GstBaseSink *sink, GstClockTimeDiff offset);
|
|
GstClockTimeDiff gst_base_sink_get_ts_offset (GstBaseSink *sink);
|
|
|
|
/* last buffer */
|
|
GstBuffer * gst_base_sink_get_last_buffer (GstBaseSink *sink);
|
|
void gst_base_sink_set_last_buffer_enabled (GstBaseSink *sink, gboolean enabled);
|
|
gboolean gst_base_sink_is_last_buffer_enabled (GstBaseSink *sink);
|
|
|
|
/* latency */
|
|
gboolean gst_base_sink_query_latency (GstBaseSink *sink, gboolean *live, gboolean *upstream_live,
|
|
GstClockTime *min_latency, GstClockTime *max_latency);
|
|
GstClockTime gst_base_sink_get_latency (GstBaseSink *sink);
|
|
|
|
/* render delay */
|
|
void gst_base_sink_set_render_delay (GstBaseSink *sink, GstClockTime delay);
|
|
GstClockTime gst_base_sink_get_render_delay (GstBaseSink *sink);
|
|
|
|
/* blocksize */
|
|
void gst_base_sink_set_blocksize (GstBaseSink *sink, guint blocksize);
|
|
guint gst_base_sink_get_blocksize (GstBaseSink *sink);
|
|
|
|
/* throttle-time */
|
|
void gst_base_sink_set_throttle_time (GstBaseSink *sink, guint64 throttle);
|
|
guint64 gst_base_sink_get_throttle_time (GstBaseSink *sink);
|
|
|
|
GstClockReturn gst_base_sink_wait_clock (GstBaseSink *sink, GstClockTime time,
|
|
GstClockTimeDiff * jitter);
|
|
GstFlowReturn gst_base_sink_wait_eos (GstBaseSink *sink, GstClockTime time,
|
|
GstClockTimeDiff *jitter);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_BASE_SINK_H__ */
|