mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-10 03:19:40 +00:00
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
|
|
*
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstglbuffer.h"
|
|
|
|
static GObjectClass* gst_gl_buffer_parent_class;
|
|
|
|
static void
|
|
gst_gl_buffer_finalize (GstGLBuffer* buffer)
|
|
{
|
|
//wait clear textures end, blocking call
|
|
gst_gl_display_clearTexture (buffer->display, buffer->texture);
|
|
|
|
g_object_unref (buffer->display);
|
|
|
|
GST_MINI_OBJECT_CLASS (gst_gl_buffer_parent_class)->
|
|
finalize (GST_MINI_OBJECT (buffer));
|
|
}
|
|
|
|
static void
|
|
gst_gl_buffer_init (GstGLBuffer* buffer, gpointer g_class)
|
|
{
|
|
buffer->display = NULL;
|
|
|
|
buffer->width = 0;
|
|
buffer->height = 0;
|
|
buffer->texture = 0;
|
|
}
|
|
|
|
static void
|
|
gst_gl_buffer_class_init (gpointer g_class, gpointer class_data)
|
|
{
|
|
GstMiniObjectClass* mini_object_class = GST_MINI_OBJECT_CLASS (g_class);
|
|
|
|
gst_gl_buffer_parent_class = g_type_class_peek_parent (g_class);
|
|
|
|
mini_object_class->finalize = (GstMiniObjectFinalizeFunction)
|
|
gst_gl_buffer_finalize;
|
|
}
|
|
|
|
|
|
GType
|
|
gst_gl_buffer_get_type (void)
|
|
{
|
|
static GType _gst_gl_buffer_type;
|
|
|
|
if (G_UNLIKELY (_gst_gl_buffer_type == 0)) {
|
|
static const GTypeInfo info = {
|
|
sizeof (GstBufferClass),
|
|
NULL,
|
|
NULL,
|
|
gst_gl_buffer_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstGLBuffer),
|
|
0,
|
|
(GInstanceInitFunc) gst_gl_buffer_init,
|
|
NULL
|
|
};
|
|
_gst_gl_buffer_type = g_type_register_static (GST_TYPE_BUFFER,
|
|
"GstGLBuffer", &info, 0);
|
|
}
|
|
return _gst_gl_buffer_type;
|
|
}
|
|
|
|
|
|
GstGLBuffer*
|
|
gst_gl_buffer_new (GstGLDisplay* display,
|
|
gint gl_width, gint gl_height)
|
|
{
|
|
GstGLBuffer* gl_buffer = (GstGLBuffer *) gst_mini_object_new (GST_TYPE_GL_BUFFER);
|
|
|
|
gl_buffer->display = g_object_ref (display);
|
|
gl_buffer->width = gl_width;
|
|
gl_buffer->height = gl_height;
|
|
|
|
//it does not depends on the video format because gl buffer has always one texture.
|
|
//the one attached to the upload FBO
|
|
GST_BUFFER_SIZE (gl_buffer) = gst_gl_buffer_get_size (gl_width, gl_height);
|
|
|
|
//blocking call, request a texture and attach it to the upload FBO
|
|
gst_gl_display_prepare_texture (gl_buffer->display, &gl_buffer->texture) ;
|
|
|
|
return gl_buffer;
|
|
}
|
|
|
|
|
|
gint
|
|
gst_gl_buffer_get_size (gint width, gint height)
|
|
{
|
|
//this is not strictly true, but it's used for compatibility with
|
|
//queue and BaseTransform
|
|
return width * height * 4;
|
|
}
|
|
|
|
|
|
gboolean
|
|
gst_gl_buffer_parse_caps (GstCaps* caps, gint* width, gint* height)
|
|
{
|
|
GstStructure* structure = gst_caps_get_structure (caps, 0);
|
|
gboolean ret = gst_structure_has_name (structure, "video/x-raw-gl");
|
|
|
|
if (!ret)
|
|
return ret;
|
|
|
|
ret = gst_structure_get_int (structure, "width", width);
|
|
ret &= gst_structure_get_int (structure, "height", height);
|
|
|
|
return ret;
|
|
}
|