mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 04:31:06 +00:00
136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2012 Matthew Waters <ystreet00@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 <gst/video/video.h>
|
|
#include <gst/video/gstvideometa.h>
|
|
|
|
#include "gstglmeta.h"
|
|
|
|
/* GstVideoMeta map/unmap */
|
|
gboolean
|
|
gst_gl_meta_map (GstVideoMeta * meta, guint plane, GstMapInfo * info,
|
|
gpointer * data, gint * stride, GstMapFlags flags)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
gst_gl_meta_unmap (GstVideoMeta * meta, guint plane, GstMapInfo * info)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gst_gl_meta_init (GstGLMeta * gl_meta, gpointer params, GstBuffer * buffer)
|
|
{
|
|
gl_meta->buffer = buffer;
|
|
}
|
|
|
|
void
|
|
gst_gl_meta_free (GstGLMeta * gl_meta, GstBuffer * buffer)
|
|
{
|
|
if (gl_meta->display) {
|
|
g_object_unref (gl_meta->display);
|
|
gl_meta->display = NULL;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_meta_transform (GstBuffer * dest, GstMeta * meta,
|
|
GstBuffer * buffer, GQuark type, gpointer data)
|
|
{
|
|
GstGLMeta *dmeta, *smeta;
|
|
|
|
smeta = (GstGLMeta *) meta;
|
|
|
|
if (GST_META_TRANSFORM_IS_COPY (type)) {
|
|
GstMetaTransformCopy *copy = data;
|
|
|
|
if (!copy->region) {
|
|
/* only copy if the complete data is copied as well */
|
|
dmeta =
|
|
(GstGLMeta *) gst_buffer_add_meta (dest, GST_GL_META_INFO,
|
|
smeta->display);
|
|
dmeta->buffer = dest;
|
|
|
|
dmeta->memory =
|
|
(GstGLMemory *) gst_memory_copy (GST_MEMORY_CAST (smeta->memory), 0,
|
|
-1);
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
GType
|
|
gst_gl_meta_api_get_type (void)
|
|
{
|
|
static volatile GType type;
|
|
static const gchar *tags[] = { "memory", NULL }; /* don't know what to set here */
|
|
|
|
if (g_once_init_enter (&type)) {
|
|
GType _type = gst_meta_api_type_register ("GstGLMetaAPI", tags);
|
|
g_once_init_leave (&type, _type);
|
|
}
|
|
return type;
|
|
}
|
|
|
|
const GstMetaInfo *
|
|
gst_gl_meta_get_info (void)
|
|
{
|
|
static const GstMetaInfo *gl_meta_info = NULL;
|
|
|
|
if (gl_meta_info == NULL) {
|
|
gl_meta_info =
|
|
gst_meta_register (GST_GL_META_API_TYPE, "GstGLMeta",
|
|
sizeof (GstGLMeta), (GstMetaInitFunction) gst_gl_meta_init,
|
|
(GstMetaFreeFunction) gst_gl_meta_free,
|
|
(GstMetaTransformFunction) gst_gl_meta_transform);
|
|
}
|
|
return gl_meta_info;
|
|
}
|
|
|
|
/**
|
|
* gst_buffer_add_gl_meta:
|
|
* @buffer: a #GstBuffer
|
|
* @display: the #GstGLDisplay to use
|
|
*
|
|
* Creates and adds a #GstGLMeta to a @buffer.
|
|
*
|
|
* Returns: (transfer full): a newly created #GstGLMeta
|
|
*/
|
|
GstGLMeta *
|
|
gst_buffer_add_gl_meta (GstBuffer * buffer, GstGLDisplay * display)
|
|
{
|
|
GstGLMeta *gl_meta;
|
|
|
|
gl_meta = (GstGLMeta *) gst_buffer_add_meta (buffer, GST_GL_META_INFO, NULL);
|
|
|
|
gl_meta->display = g_object_ref (display);
|
|
|
|
g_assert (gst_buffer_n_memory (buffer) == 1);
|
|
|
|
gl_meta->memory = (GstGLMemory *) gst_buffer_get_memory (buffer, 0);
|
|
|
|
return gl_meta;
|
|
}
|