mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-18 07:47:17 +00:00
ee488f6e6f
git-svn-id: svn://svn.wobow.com/GStreamer_playground/gst-plugins-gl@435 93df14bb-0f41-7a43-8087-d3e2a2f0e464
144 lines
4 KiB
C
144 lines
4 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,
|
|
buffer->texture_u, buffer->texture_v);
|
|
|
|
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->video_format = 0;
|
|
buffer->texture = 0;
|
|
buffer->texture_u = 0;
|
|
buffer->texture_v = 0;
|
|
buffer->width = 0;
|
|
buffer->height = 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_from_video_format (GstGLDisplay* display,
|
|
GstVideoFormat video_format, gint context_width, gint context_height,
|
|
gint width, gint height)
|
|
{
|
|
GstGLBuffer *buffer;
|
|
|
|
g_return_val_if_fail (video_format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
|
|
g_return_val_if_fail (display != NULL, NULL);
|
|
g_return_val_if_fail (width > 0, NULL);
|
|
g_return_val_if_fail (height > 0, NULL);
|
|
|
|
buffer = (GstGLBuffer *) gst_mini_object_new (GST_TYPE_GL_BUFFER);
|
|
|
|
buffer->display = g_object_ref (display);
|
|
buffer->width = width;
|
|
buffer->height = height;
|
|
buffer->video_format = video_format;
|
|
GST_BUFFER_SIZE (buffer) = gst_gl_buffer_format_get_size (video_format, context_width, context_height);
|
|
|
|
//blocking call, init texture
|
|
gst_gl_display_textureRequested (buffer->display, buffer->video_format,
|
|
buffer->width, buffer->height,
|
|
&buffer->texture, &buffer->texture_u, &buffer->texture_v) ;
|
|
|
|
return buffer;
|
|
}
|
|
|
|
|
|
int
|
|
gst_gl_buffer_format_get_size (GstVideoFormat format, int width, int height)
|
|
{
|
|
/* this is not strictly true, but it's used for compatibility with
|
|
* queue and BaseTransform */
|
|
return width * height * 4;
|
|
}
|
|
|
|
gboolean
|
|
gst_gl_buffer_format_parse_caps (GstCaps * caps, GstVideoFormat * format,
|
|
gint* width, gint* height)
|
|
{
|
|
GstStructure *structure;
|
|
gboolean ret;
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
if (!gst_structure_has_name (structure, "video/x-raw-gl"))
|
|
return FALSE;
|
|
|
|
ret = gst_structure_get_int (structure, "width", width);
|
|
ret &= gst_structure_get_int (structure, "height", height);
|
|
|
|
return ret;
|
|
}
|