mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-02-06 14:32:31 +00:00
96a46e31c7
Adding propose_allocation is to meet the requirement of Application to request buffers. Application sometimes need to create buffer pool and request buffers to maintain buffer management itself, and Gstreamer plugin import Application's buffers to use. So, add propose_allocation in appsink like waylandsink and kmssink etc. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4185>
209 lines
7 KiB
C
209 lines
7 KiB
C
/* GStreamer
|
|
* Copyright (C) 2007 David Schleef <ds@schleef.org>
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef _GST_APP_SINK_H_
|
|
#define _GST_APP_SINK_H_
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/base/gstbasesink.h>
|
|
#include <gst/app/app-prelude.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_APP_SINK \
|
|
(gst_app_sink_get_type())
|
|
#define GST_APP_SINK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_APP_SINK,GstAppSink))
|
|
#define GST_APP_SINK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_APP_SINK,GstAppSinkClass))
|
|
#define GST_IS_APP_SINK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_APP_SINK))
|
|
#define GST_IS_APP_SINK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_APP_SINK))
|
|
#define GST_APP_SINK_CAST(obj) \
|
|
((GstAppSink*)(obj))
|
|
|
|
typedef struct _GstAppSink GstAppSink;
|
|
typedef struct _GstAppSinkClass GstAppSinkClass;
|
|
typedef struct _GstAppSinkPrivate GstAppSinkPrivate;
|
|
|
|
/* FIXME 2.0: Make the instance/class struct private */
|
|
|
|
/**
|
|
* GstAppSinkCallbacks: (skip)
|
|
* @eos: Called when the end-of-stream has been reached. This callback
|
|
* is called from the streaming thread.
|
|
* @new_preroll: Called when a new preroll sample is available.
|
|
* This callback is called from the streaming thread.
|
|
* The new preroll sample can be retrieved with
|
|
* gst_app_sink_pull_preroll() either from this callback
|
|
* or from any other thread.
|
|
* @new_sample: Called when a new sample is available.
|
|
* This callback is called from the streaming thread.
|
|
* The new sample can be retrieved with
|
|
* gst_app_sink_pull_sample() either from this callback
|
|
* or from any other thread.
|
|
* @new_event: Called when a new event is available.
|
|
* This callback is called from the streaming thread.
|
|
* The new event can be retrieved with
|
|
* gst_app_sink_pull_event() either from this callback
|
|
* or from any other thread.
|
|
* The callback should return %TRUE if the event has been handled,
|
|
* %FALSE otherwise.
|
|
* Since: 1.20
|
|
* @propose_allocation: Called when the propose_allocation query is available.
|
|
* This callback is called from the streaming thread.
|
|
* The allocation query can be retrieved with
|
|
* gst_app_sink_propose_allocation() either from this callback
|
|
* or from any other thread.
|
|
* Since: 1.24
|
|
*
|
|
* A set of callbacks that can be installed on the appsink with
|
|
* gst_app_sink_set_callbacks().
|
|
*/
|
|
typedef struct {
|
|
void (*eos) (GstAppSink *appsink, gpointer user_data);
|
|
GstFlowReturn (*new_preroll) (GstAppSink *appsink, gpointer user_data);
|
|
GstFlowReturn (*new_sample) (GstAppSink *appsink, gpointer user_data);
|
|
gboolean (*new_event) (GstAppSink *appsink, gpointer user_data);
|
|
gboolean (*propose_allocation) (GstAppSink *appsink, GstQuery *query, gpointer user_data);
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING - 2];
|
|
} GstAppSinkCallbacks;
|
|
|
|
struct _GstAppSink
|
|
{
|
|
GstBaseSink basesink;
|
|
|
|
/*< private >*/
|
|
GstAppSinkPrivate *priv;
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
struct _GstAppSinkClass
|
|
{
|
|
GstBaseSinkClass basesink_class;
|
|
|
|
/* signals */
|
|
void (*eos) (GstAppSink *appsink);
|
|
GstFlowReturn (*new_preroll) (GstAppSink *appsink);
|
|
GstFlowReturn (*new_sample) (GstAppSink *appsink);
|
|
/* new_event is missing as we ran out padding */
|
|
|
|
/* actions */
|
|
GstSample * (*pull_preroll) (GstAppSink *appsink);
|
|
GstSample * (*pull_sample) (GstAppSink *appsink);
|
|
GstSample * (*try_pull_preroll) (GstAppSink *appsink, GstClockTime timeout);
|
|
GstSample * (*try_pull_sample) (GstAppSink *appsink, GstClockTime timeout);
|
|
/**
|
|
* GstAppSinkClass::try_pull_object:
|
|
*
|
|
* See #GstAppSink::try-pull-object: signal.
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
|
|
GstMiniObject * (*try_pull_object) (GstAppSink *appsink, GstClockTime timeout);
|
|
/**
|
|
* GstAppSinkClass::propose_allocation:
|
|
*
|
|
* See #GstAppSink::propose-allocation: signal.
|
|
*
|
|
* Since: 1.24
|
|
*/
|
|
gboolean (*propose_allocation) (GstAppSink *appsink, GstQuery *query);
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING - 4];
|
|
};
|
|
|
|
GST_APP_API
|
|
GType gst_app_sink_get_type (void);
|
|
|
|
GST_APP_API
|
|
void gst_app_sink_set_caps (GstAppSink *appsink, const GstCaps *caps);
|
|
|
|
GST_APP_API
|
|
GstCaps * gst_app_sink_get_caps (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
gboolean gst_app_sink_is_eos (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
void gst_app_sink_set_emit_signals (GstAppSink *appsink, gboolean emit);
|
|
|
|
GST_APP_API
|
|
gboolean gst_app_sink_get_emit_signals (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
void gst_app_sink_set_max_buffers (GstAppSink *appsink, guint max);
|
|
|
|
GST_APP_API
|
|
guint gst_app_sink_get_max_buffers (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
void gst_app_sink_set_drop (GstAppSink *appsink, gboolean drop);
|
|
|
|
GST_APP_API
|
|
gboolean gst_app_sink_get_drop (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
void gst_app_sink_set_buffer_list_support (GstAppSink *appsink, gboolean enable_lists);
|
|
|
|
GST_APP_API
|
|
gboolean gst_app_sink_get_buffer_list_support (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
void gst_app_sink_set_wait_on_eos (GstAppSink *appsink, gboolean wait);
|
|
|
|
GST_APP_API
|
|
gboolean gst_app_sink_get_wait_on_eos (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
GstSample * gst_app_sink_pull_preroll (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
GstSample * gst_app_sink_pull_sample (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
GstMiniObject * gst_app_sink_pull_object (GstAppSink *appsink);
|
|
|
|
GST_APP_API
|
|
GstSample * gst_app_sink_try_pull_preroll (GstAppSink *appsink, GstClockTime timeout);
|
|
|
|
GST_APP_API
|
|
GstSample * gst_app_sink_try_pull_sample (GstAppSink *appsink, GstClockTime timeout);
|
|
|
|
GST_APP_API
|
|
GstMiniObject * gst_app_sink_try_pull_object (GstAppSink *appsink, GstClockTime timeout);
|
|
|
|
GST_APP_API
|
|
void gst_app_sink_set_callbacks (GstAppSink * appsink,
|
|
GstAppSinkCallbacks *callbacks,
|
|
gpointer user_data,
|
|
GDestroyNotify notify);
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstAppSink, gst_object_unref)
|
|
|
|
G_END_DECLS
|
|
|
|
#endif
|
|
|