gstreamer/gst/vaapi/gstvaapivideobuffer.c

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/*
* gstvaapivideobuffer.c - Gstreamer/VA video buffer
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*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Copyright (C) 2011-2013 Intel Corporation
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*
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* 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.
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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
* Lesser General Public License for more details.
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*
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* 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
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*/
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/**
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* SECTION:gstvaapivideobuffer
* @short_description: VA video buffer for GStreamer
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*/
#include "gst/vaapi/sysdeps.h"
#include <gst/video/gstsurfacebuffer.h>
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#include "gstvaapivideobuffer.h"
#if USE_GLX
# include "gstvaapivideoconverter_glx.h"
#endif
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#define GST_VAAPI_TYPE_VIDEO_BUFFER \
(gst_vaapi_video_buffer_get_type())
#define GST_VAAPI_VIDEO_BUFFER(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), \
GST_VAAPI_TYPE_VIDEO_BUFFER, \
GstVaapiVideoBuffer))
#define GST_VAAPI_VIDEO_BUFFER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), \
GST_VAAPI_TYPE_VIDEO_BUFFER, \
GstVaapiVideoBufferClass))
#define GST_VAAPI_IS_VIDEO_BUFFER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_VIDEO_BUFFER))
#define GST_VAAPI_IS_VIDEO_BUFFER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_VIDEO_BUFFER))
#define GST_VAAPI_VIDEO_BUFFER_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS((obj), \
GST_VAAPI_TYPE_VIDEO_BUFFER, \
GstVaapiVideoBufferClass))
typedef struct _GstVaapiVideoBufferClass GstVaapiVideoBufferClass;
/**
* GstVaapiVideoBuffer:
*
* A #GstBuffer holding video objects (#GstVaapiSurface and #GstVaapiImage).
*/
struct _GstVaapiVideoBuffer {
/*< private >*/
GstSurfaceBuffer parent_instance;
GstVaapiVideoMeta *meta;
};
/**
* GstVaapiVideoBufferClass:
*
* A #GstBuffer holding video objects
*/
struct _GstVaapiVideoBufferClass {
/*< private >*/
GstSurfaceBufferClass parent_class;
};
GType
gst_vaapi_video_buffer_get_type(void) G_GNUC_CONST;
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G_DEFINE_TYPE(GstVaapiVideoBuffer,
gst_vaapi_video_buffer,
GST_TYPE_SURFACE_BUFFER)
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typedef GstSurfaceConverter *(*GstSurfaceConverterCreateFunc)(
GstSurfaceBuffer *surface, const gchar *type, GValue *dest);
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static GstSurfaceConverter *
gst_vaapi_video_buffer_create_converter(GstSurfaceBuffer *surface,
const gchar *type, GValue *dest)
{
GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(surface);
GstSurfaceConverterCreateFunc func;
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func = (GstSurfaceConverterCreateFunc)
gst_vaapi_video_meta_get_surface_converter(vbuffer->meta);
return func ? func(surface, type, dest) : NULL;
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}
static void
gst_vaapi_video_buffer_class_init(GstVaapiVideoBufferClass *klass)
{
GstSurfaceBufferClass * const surface_class =
GST_SURFACE_BUFFER_CLASS(klass);
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surface_class->create_converter = gst_vaapi_video_buffer_create_converter;
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}
static void
gst_vaapi_video_buffer_init(GstVaapiVideoBuffer *buffer)
{
}
static GFunc
get_surface_converter(GstVaapiDisplay *display)
{
GFunc func;
switch (gst_vaapi_display_get_display_type(display)) {
#if USE_GLX
case GST_VAAPI_DISPLAY_TYPE_GLX:
func = (GFunc)gst_vaapi_video_converter_glx_new;
break;
#endif
default:
func = NULL;
break;
}
return func;
}
static GstBuffer *
new_vbuffer(GstVaapiVideoMeta *meta)
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{
GstBuffer *buffer;
g_return_val_if_fail(meta != NULL, NULL);
gst_vaapi_video_meta_set_surface_converter(meta,
get_surface_converter(gst_vaapi_video_meta_get_display(meta)));
buffer = GST_BUFFER_CAST(gst_mini_object_new(GST_TYPE_SURFACE_BUFFER));
if (buffer)
gst_buffer_set_vaapi_video_meta(buffer, meta);
gst_vaapi_video_meta_unref(meta);
return buffer;
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}
GstBuffer *
gst_vaapi_video_buffer_new_from_pool(GstVaapiVideoPool *pool)
{
return new_vbuffer(gst_vaapi_video_meta_new_from_pool(pool));
}
GstBuffer *
gst_vaapi_video_buffer_new_from_buffer(GstBuffer *buffer)
{
GstVaapiVideoMeta * const meta = gst_buffer_get_vaapi_video_meta(buffer);
return meta ? new_vbuffer(gst_vaapi_video_meta_ref(meta)) : NULL;
}
GstBuffer *
gst_vaapi_video_buffer_new_with_image(GstVaapiImage *image)
{
return new_vbuffer(gst_vaapi_video_meta_new_with_image(image));
}
GstBuffer *
gst_vaapi_video_buffer_new_with_surface(GstVaapiSurface *surface)
{
return new_vbuffer(gst_vaapi_video_meta_new_with_surface(surface));
}
GstBuffer *
gst_vaapi_video_buffer_new_with_surface_proxy(GstVaapiSurfaceProxy *proxy)
{
return new_vbuffer(gst_vaapi_video_meta_new_with_surface_proxy(proxy));
}
GstVaapiVideoMeta *
gst_vaapi_video_buffer_get_meta(GstVaapiVideoBuffer *buffer)
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{
g_return_val_if_fail(GST_VAAPI_IS_VIDEO_BUFFER(buffer), NULL);
return buffer->meta;
}