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gstreamer/gst/vaapi/gstvaapipluginbase.h
U. Artie Eoff ca2942176b plugins: base: manage pad-specific data in a single struct 
Define a struct (GstVaapiPadPrivate) to encapsulate the
pad-specific data (i.e. buffer pool, allocator, info,
caps, etc.).

Add an interface to retrieve the data struct for a given
pad.

Finally, update the base plugin to use the data struct
throughout the implementation.

This will enable us to easily extend the base plugin in the
future to allow for N-to-1 pad subclasses (e.g. overlay/
composite).
2019-12-11 21:27:48 +00:00

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/*
* gstvaapipluginbase.h - Base GStreamer VA-API Plugin element
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
* Copyright (C) 2011-2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef GST_VAAPI_PLUGIN_BASE_H
#define GST_VAAPI_PLUGIN_BASE_H
#include <gst/base/gstbasetransform.h>
#include <gst/video/gstvideodecoder.h>
#include <gst/video/gstvideoencoder.h>
#include <gst/video/gstvideosink.h>
#include <gst/vaapi/gstvaapidisplay.h>
G_BEGIN_DECLS
typedef struct _GstVaapiPluginBase GstVaapiPluginBase;
typedef struct _GstVaapiPluginBaseClass GstVaapiPluginBaseClass;
typedef struct _GstVaapiPadPrivate GstVaapiPadPrivate;
#define GST_VAAPI_PLUGIN_BASE(plugin) \
((GstVaapiPluginBase *)(plugin))
#define GST_VAAPI_PLUGIN_BASE_CLASS(plugin) \
((GstVaapiPluginBaseClass *)(plugin))
#define GST_VAAPI_PLUGIN_BASE_GET_CLASS(plugin) \
GST_VAAPI_PLUGIN_BASE_CLASS(GST_ELEMENT_GET_CLASS( \
GST_VAAPI_PLUGIN_BASE_ELEMENT(plugin)))
#define GST_VAAPI_PLUGIN_BASE_PARENT(plugin) \
(&GST_VAAPI_PLUGIN_BASE(plugin)->parent_instance)
#define GST_VAAPI_PLUGIN_BASE_PARENT_CLASS(plugin) \
(&GST_VAAPI_PLUGIN_BASE_CLASS(plugin)->parent_class)
#define GST_VAAPI_PLUGIN_BASE_ELEMENT(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT(plugin)->element)
#define GST_VAAPI_PLUGIN_BASE_ELEMENT_CLASS(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT_CLASS(plugin)->element)
#define GST_VAAPI_PLUGIN_BASE_DECODER(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT(plugin)->decoder)
#define GST_VAAPI_PLUGIN_BASE_DECODER_CLASS(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT_CLASS(plugin)->decoder)
#define GST_VAAPI_PLUGIN_BASE_ENCODER(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT(plugin)->encoder)
#define GST_VAAPI_PLUGIN_BASE_ENCODER_CLASS(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT_CLASS(plugin)->encoder)
#define GST_VAAPI_PLUGIN_BASE_TRANSFORM(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT(plugin)->transform)
#define GST_VAAPI_PLUGIN_BASE_TRANSFORM_CLASS(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT_CLASS(plugin)->transform)
#define GST_VAAPI_PLUGIN_BASE_SINK(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT(plugin)->sink)
#define GST_VAAPI_PLUGIN_BASE_SINK_CLASS(plugin) \
(&GST_VAAPI_PLUGIN_BASE_PARENT_CLASS(plugin)->sink)
#define GST_VAAPI_PLUGIN_BASE_INIT_INTERFACES \
gst_vaapi_plugin_base_init_interfaces(g_define_type_id);
#define GST_VAAPI_PLUGIN_BASE_SINK_PAD(plugin) \
(GST_VAAPI_PLUGIN_BASE(plugin)->sinkpad)
#define GST_VAAPI_PLUGIN_BASE_SINK_PAD_PRIVATE(plugin) \
(GST_VAAPI_PLUGIN_BASE(plugin)->sinkpriv)
#define GST_VAAPI_PLUGIN_BASE_SINK_PAD_CAPS(plugin) \
(GST_VAAPI_PLUGIN_BASE_SINK_PAD_PRIVATE(plugin)->caps)
#define GST_VAAPI_PLUGIN_BASE_SINK_PAD_INFO(plugin) \
(&GST_VAAPI_PLUGIN_BASE_SINK_PAD_PRIVATE(plugin)->info)
#define GST_VAAPI_PLUGIN_BASE_SRC_PAD(plugin) \
(GST_VAAPI_PLUGIN_BASE(plugin)->srcpad)
#define GST_VAAPI_PLUGIN_BASE_SRC_PAD_PRIVATE(plugin) \
(GST_VAAPI_PLUGIN_BASE(plugin)->srcpriv)
#define GST_VAAPI_PLUGIN_BASE_SRC_PAD_CAPS(plugin) \
(GST_VAAPI_PLUGIN_BASE_SRC_PAD_PRIVATE(plugin)->caps)
#define GST_VAAPI_PLUGIN_BASE_SRC_PAD_INFO(plugin) \
(&GST_VAAPI_PLUGIN_BASE_SRC_PAD_PRIVATE(plugin)->info)
#define GST_VAAPI_PLUGIN_BASE_SRC_PAD_CAN_DMABUF(plugin) \
(GST_VAAPI_PLUGIN_BASE_SRC_PAD_PRIVATE(plugin)->can_dmabuf)
#define GST_VAAPI_PLUGIN_BASE_SRC_PAD_BUFFER_POOL(plugin) \
(GST_VAAPI_PLUGIN_BASE_SRC_PAD_PRIVATE(plugin)->buffer_pool)
#define GST_VAAPI_PLUGIN_BASE_SRC_PAD_ALLOCATOR(plugin) \
(GST_VAAPI_PLUGIN_BASE_SRC_PAD_PRIVATE(plugin)->allocator)
#define GST_VAAPI_PLUGIN_BASE_OTHER_ALLOCATOR(plugin) \
(GST_VAAPI_PLUGIN_BASE_SRC_PAD_PRIVATE(plugin)->other_allocator)
#define GST_VAAPI_PLUGIN_BASE_OTHER_ALLOCATOR_PARAMS(plugin) \
(GST_VAAPI_PLUGIN_BASE_SRC_PAD_PRIVATE(plugin)->other_allocator_params)
#define GST_VAAPI_PLUGIN_BASE_COPY_OUTPUT_FRAME(plugin) \
(GST_VAAPI_PLUGIN_BASE(plugin)->copy_output_frame)
#define GST_VAAPI_PLUGIN_BASE_DISPLAY(plugin) \
(GST_VAAPI_PLUGIN_BASE(plugin)->display)
#define GST_VAAPI_PLUGIN_BASE_DISPLAY_TYPE(plugin) \
(GST_VAAPI_PLUGIN_BASE(plugin)->display_type)
#define GST_VAAPI_PLUGIN_BASE_DISPLAY_NAME(plugin) \
(GST_VAAPI_PLUGIN_BASE(plugin)->display_name)
#define GST_VAAPI_PLUGIN_BASE_DISPLAY_REPLACE(plugin, new_display) \
(gst_vaapi_display_replace(&GST_VAAPI_PLUGIN_BASE_DISPLAY(plugin), \
(new_display)))
#define GST_VAAPI_PLUGIN_BASE_DEFINE_SET_CONTEXT(parent_class) \
static void \
gst_vaapi_base_set_context (GstElement * element, GstContext * context) \
{ \
GstVaapiPluginBase *const plugin = GST_VAAPI_PLUGIN_BASE (element); \
\
gst_vaapi_plugin_base_set_context (plugin, context); \
GST_ELEMENT_CLASS (parent_class)->set_context (element, context); \
}
struct _GstVaapiPadPrivate
{
GstCaps *caps;
GstVideoInfo info;
GstBufferPool *buffer_pool;
GstAllocator *allocator;
guint buffer_size;
gboolean caps_is_raw;
gboolean can_dmabuf;
GstAllocator *other_allocator;
GstAllocationParams other_allocator_params;
};
struct _GstVaapiPluginBase
{
/*< private >*/
union
{
GstElement element;
GstVideoDecoder decoder;
GstVideoEncoder encoder;
GstBaseTransform transform;
GstVideoSink sink;
} parent_instance;
GstDebugCategory *debug_category;
GstPad *sinkpad;
GstPad *srcpad;
GstVaapiPadPrivate *sinkpriv;
GstVaapiPadPrivate *srcpriv;
GstVaapiDisplay *display;
GstVaapiDisplayType display_type;
GstVaapiDisplayType display_type_req;
gchar *display_name;
GstObject *gl_context;
GstObject *gl_display;
GstObject *gl_other_context;
GstCaps *allowed_raw_caps;
gboolean enable_direct_rendering;
gboolean copy_output_frame;
};
struct _GstVaapiPluginBaseClass
{
/*< private >*/
union
{
GstElementClass element;
GstVideoDecoderClass decoder;
GstVideoEncoderClass encoder;
GstBaseTransformClass transform;
GstVideoSinkClass sink;
} parent_class;
gboolean (*has_interface) (GstVaapiPluginBase * plugin, GType type);
void (*display_changed) (GstVaapiPluginBase * plugin);
GstVaapiPadPrivate * (*get_vaapi_pad_private) (GstVaapiPluginBase * plugin, GstPad * pad);
};
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_init_interfaces (GType type);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_class_init (GstVaapiPluginBaseClass * klass);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_init (GstVaapiPluginBase * plugin,
GstDebugCategory * debug_category);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_finalize (GstVaapiPluginBase * plugin);
G_GNUC_INTERNAL
gboolean
gst_vaapi_plugin_base_open (GstVaapiPluginBase * plugin);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_close (GstVaapiPluginBase * plugin);
G_GNUC_INTERNAL
gboolean
gst_vaapi_plugin_base_has_display_type (GstVaapiPluginBase * plugin,
GstVaapiDisplayType display_type_req);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_set_display_type (GstVaapiPluginBase * plugin,
GstVaapiDisplayType display_type);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_set_display_name (GstVaapiPluginBase * plugin,
const gchar * display_name);
G_GNUC_INTERNAL
gboolean
gst_vaapi_plugin_base_ensure_display (GstVaapiPluginBase * plugin);
G_GNUC_INTERNAL
gboolean
gst_vaapi_plugin_base_set_caps (GstVaapiPluginBase * plugin, GstCaps * incaps,
GstCaps * outcaps);
G_GNUC_INTERNAL
gboolean
gst_vaapi_plugin_base_propose_allocation (GstVaapiPluginBase * plugin,
GstQuery * query);
G_GNUC_INTERNAL
gboolean
gst_vaapi_plugin_base_decide_allocation (GstVaapiPluginBase * plugin,
GstQuery * query);
G_GNUC_INTERNAL
GstFlowReturn
gst_vaapi_plugin_base_get_input_buffer (GstVaapiPluginBase * plugin,
GstBuffer * inbuf, GstBuffer ** outbuf_ptr);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_set_context (GstVaapiPluginBase * plugin,
GstContext * context);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_set_gl_context (GstVaapiPluginBase * plugin,
GstObject * object);
G_GNUC_INTERNAL
GstObject *
gst_vaapi_plugin_base_create_gl_context (GstVaapiPluginBase * plugin);
G_GNUC_INTERNAL
GstCaps *
gst_vaapi_plugin_base_get_allowed_sinkpad_raw_caps (GstVaapiPluginBase * plugin);
G_GNUC_INTERNAL
GstCaps *
gst_vaapi_plugin_base_get_allowed_srcpad_raw_caps (
GstVaapiPluginBase * plugin, GstVideoFormat format);
G_GNUC_INTERNAL
void
gst_vaapi_plugin_base_set_srcpad_can_dmabuf (GstVaapiPluginBase * plugin,
GstObject * object);
G_GNUC_INTERNAL
gboolean
gst_vaapi_plugin_copy_va_buffer (GstVaapiPluginBase * plugin,
GstBuffer * inbuf, GstBuffer * outbuf);
G_END_DECLS
#endif /* GST_VAAPI_PLUGIN_BASE_H */
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