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/*
* gstvaapivideoconverter_glx.c - Gst VA video converter
*
* Copyright (C) 2011 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 "sysdeps.h"
#include <string.h>
#include "gstvaapivideoconverter_glx.h"
#include "gstvaapivideobuffer.h"
#include "gstvaapitexture.h"
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));
struct _GstVaapiVideoConverterGLXPrivate {
GstVaapiTexture *texture;
};
static void
gst_vaapi_video_converter_glx_dispose(GObject *object)
{
GstVaapiVideoConverterGLXPrivate *priv =
GST_VAAPI_VIDEO_CONVERTER_GLX (object)->priv;
g_clear_object(&priv->texture);
G_OBJECT_CLASS (gst_vaapi_video_converter_glx_parent_class)->dispose (object);
}
static void
gst_vaapi_video_converter_glx_class_init(GstVaapiVideoConverterGLXClass *klass)
{
GObjectClass *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 = G_TYPE_INSTANCE_GET_PRIVATE(buffer,
GST_VAAPI_TYPE_VIDEO_CONVERTER,
GstVaapiVideoConverterGLXPrivate);
}
static void
gst_vaapi_video_converter_glx_iface_init (GstSurfaceConverterInterface *iface) {
iface->upload = 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(GstSurfaceBuffer *surface, const gchar *type,
GValue *dest)
{
GstVaapiVideoBuffer *buffer = GST_VAAPI_VIDEO_BUFFER (surface);
GstVaapiDisplay *display = gst_vaapi_video_buffer_get_display (buffer);
GstVaapiTexture *texture;
GstVaapiVideoConverterGLX *converter = NULL;
/* We only support Open GL texture conversion */
if (strcmp(type, "opengl") || !G_VALUE_HOLDS_UINT (dest))
return NULL;
/* FIXME Should we assume target and format ? */
texture = gst_vaapi_texture_new_with_texture (display,
g_value_get_uint (dest),
GL_TEXTURE_2D,
GL_BGRA);
if (texture) {
converter = g_object_new (GST_VAAPI_TYPE_VIDEO_CONVERTER, NULL);
converter->priv->texture = texture;
}
return GST_SURFACE_CONVERTER (converter);
}
gboolean
gst_vaapi_video_converter_glx_upload (GstSurfaceConverter *converter,
GstSurfaceBuffer *buffer)
{
GstVaapiVideoConverterGLXPrivate *priv =
GST_VAAPI_VIDEO_CONVERTER_GLX (converter)->priv;
GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER (buffer);
GstVaapiSurface *surface = gst_vaapi_video_buffer_get_surface (vbuffer);
GstVaapiDisplay *new_dpy, *old_dpy;
GstVideoOverlayComposition * const composition =
gst_video_buffer_get_overlay_composition (GST_BUFFER (buffer));
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) {
guint texture = gst_vaapi_texture_get_id (priv->texture);
g_object_unref (priv->texture);
priv->texture = gst_vaapi_texture_new_with_texture (new_dpy,
texture,
GL_TEXTURE_2D,
GL_BGRA);
}
if (!gst_vaapi_surface_set_subpictures_from_composition (surface,
composition, TRUE))
GST_WARNING ("could not update subtitles");
return gst_vaapi_texture_put_surface (priv->texture, surface,
gst_vaapi_video_buffer_get_render_flags (vbuffer));
}
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