gstreamer/gst/vaapi/gstvaapivideoconverter_glx.c

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/*
* gstvaapivideoconverter_glx.c - Gst VA video converter
*
* Copyright (C) 2011-2013 Intel Corporation
* Copyright (C) 2011 Collabora Ltd.
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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
*/
#include "gst/vaapi/sysdeps.h"
#include <gst/vaapi/gstvaapitexture.h>
#include "gstvaapivideoconverter_glx.h"
#include "gstvaapipluginutil.h"
#include "gstvaapivideometa.h"
#if GST_CHECK_VERSION(1,0,0)
typedef gboolean (*GstSurfaceUploadFunction)(GstSurfaceConverter *,
GstBuffer *);
#else
typedef gboolean (*GstSurfaceUploadFunction)(GstSurfaceConverter *,
GstSurfaceBuffer *);
#endif
static void
gst_vaapi_video_converter_glx_iface_init(GstSurfaceConverterInterface *iface);
G_DEFINE_TYPE_WITH_CODE(
GstVaapiVideoConverterGLX,
gst_vaapi_video_converter_glx,
G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE(GST_TYPE_SURFACE_CONVERTER,
gst_vaapi_video_converter_glx_iface_init))
#define GST_VAAPI_VIDEO_CONVERTER_GLX_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE((obj), \
GST_VAAPI_TYPE_VIDEO_CONVERTER_GLX, \
GstVaapiVideoConverterGLXPrivate))
struct _GstVaapiVideoConverterGLXPrivate {
GstVaapiTexture *texture;
};
static gboolean
gst_vaapi_video_converter_glx_upload(GstSurfaceConverter *self,
GstBuffer *buffer);
static void
gst_vaapi_video_converter_glx_dispose(GObject *object)
{
GstVaapiVideoConverterGLXPrivate * const priv =
GST_VAAPI_VIDEO_CONVERTER_GLX(object)->priv;
gst_vaapi_texture_replace(&priv->texture, NULL);
G_OBJECT_CLASS(gst_vaapi_video_converter_glx_parent_class)->dispose(object);
}
static void
gst_vaapi_video_converter_glx_class_init(GstVaapiVideoConverterGLXClass *klass)
{
GObjectClass * const object_class = G_OBJECT_CLASS(klass);
g_type_class_add_private(klass, sizeof(GstVaapiVideoConverterGLXPrivate));
object_class->dispose = gst_vaapi_video_converter_glx_dispose;
}
static void
gst_vaapi_video_converter_glx_init(GstVaapiVideoConverterGLX *buffer)
{
buffer->priv = GST_VAAPI_VIDEO_CONVERTER_GLX_GET_PRIVATE(buffer);
}
static void
gst_vaapi_video_converter_glx_iface_init(GstSurfaceConverterInterface *iface)
{
iface->upload = (GstSurfaceUploadFunction)
gst_vaapi_video_converter_glx_upload;
}
/**
* gst_vaapi_video_converter_glx_new:
* @surface: the #GstSurfaceBuffer
* @type: type of the target buffer (must be "opengl")
* @dest: target of the conversion (must be GL texture id)
*
* Creates an empty #GstBuffer. The caller is responsible for
* completing the initialization of the buffer with the
* gst_vaapi_video_converter_glx_set_*() functions.
*
* Return value: the newly allocated #GstBuffer, or %NULL on error
*/
GstSurfaceConverter *
gst_vaapi_video_converter_glx_new(GstBuffer *buffer, const gchar *type,
GValue *dest)
{
GstVaapiVideoMeta * const meta = gst_buffer_get_vaapi_video_meta(buffer);
GstVaapiTexture *texture;
GstVaapiVideoConverterGLX *converter;
/* We only support Open GL texture conversion */
if (strcmp(type, "opengl") != 0 || !G_VALUE_HOLDS_UINT(dest))
return NULL;
/* FIXME Should we assume target and format ? */
texture = gst_vaapi_texture_new_with_texture(
gst_vaapi_video_meta_get_display(meta),
g_value_get_uint(dest), GL_TEXTURE_2D, GL_BGRA);
if (!texture)
return NULL;
converter = g_object_new(GST_VAAPI_TYPE_VIDEO_CONVERTER_GLX, NULL);
converter->priv->texture = texture;
return GST_SURFACE_CONVERTER(converter);
}
gboolean
gst_vaapi_video_converter_glx_upload(GstSurfaceConverter *self,
GstBuffer *buffer)
{
GstVaapiVideoConverterGLXPrivate * const priv =
GST_VAAPI_VIDEO_CONVERTER_GLX(self)->priv;
GstVaapiVideoMeta * const meta = gst_buffer_get_vaapi_video_meta(buffer);
GstVaapiSurface * const surface = gst_vaapi_video_meta_get_surface(meta);
GstVaapiDisplay *new_dpy, *old_dpy;
new_dpy = gst_vaapi_object_get_display(GST_VAAPI_OBJECT(surface));
old_dpy = gst_vaapi_object_get_display(GST_VAAPI_OBJECT(priv->texture));
if (old_dpy != new_dpy) {
const guint texture = gst_vaapi_texture_get_id(priv->texture);
gst_vaapi_texture_replace(&priv->texture, NULL);
priv->texture = gst_vaapi_texture_new_with_texture(new_dpy,
texture, GL_TEXTURE_2D, GL_BGRA);
}
if (!gst_vaapi_apply_composition(surface, buffer))
GST_WARNING("could not update subtitles");
return gst_vaapi_texture_put_surface(priv->texture, surface,
gst_vaapi_video_meta_get_render_flags(meta));
}