gstreamer/subprojects/gstreamer-vaapi/gst-libs/gst/vaapi/gstvaapitexturemap.c

165 lines
4 KiB
C

/*
* gstvaapitexture.c - VA texture Hash map
*
* Copyright (C) 2016 Intel Corporation
* Copyright (C) 2016 Igalia S.L.
*
* 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
*/
/**
* SECTION:gstvaapitexturemap
* @short_description: VA/GLX/EGL texture hash map abstraction
*/
#include "gstvaapitexturemap.h"
#define DEBUG 1
#include "gstvaapidebug.h"
/**
* GstVaapiTextureMap:
*
* Base class for API-dependent texture map.
*/
struct _GstVaapiTextureMap
{
GstObject parent_instance;
/*< private > */
GHashTable *texture_map;
};
/**
* GstVaapiTextureMapClass:
*
* Base class for API-dependent texture map.
*/
struct _GstVaapiTextureMapClass
{
GstObjectClass parent_class;
};
#define MAX_NUM_TEXTURE 10
G_DEFINE_TYPE (GstVaapiTextureMap, gst_vaapi_texture_map, GST_TYPE_OBJECT);
static void
gst_vaapi_texture_map_init (GstVaapiTextureMap * map)
{
map->texture_map =
g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL,
(GDestroyNotify) gst_mini_object_unref);
}
static void
gst_vaapi_texture_map_finalize (GObject * object)
{
GstVaapiTextureMap *map = GST_VAAPI_TEXTURE_MAP (object);
if (map->texture_map) {
g_hash_table_remove_all (map->texture_map);
g_hash_table_destroy (map->texture_map);
}
G_OBJECT_CLASS (gst_vaapi_texture_map_parent_class)->finalize (object);
}
static void
gst_vaapi_texture_map_class_init (GstVaapiTextureMapClass * klass)
{
GObjectClass *const object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gst_vaapi_texture_map_finalize;
}
/**
* gst_vaapi_texture_map_new:
*
* Creates a texture hash map.
*
* Return value: the newly created #GstVaapiTextureMap object
*/
GstVaapiTextureMap *
gst_vaapi_texture_map_new (void)
{
GstVaapiTextureMap *map;
map = g_object_new (GST_TYPE_VAAPI_TEXTURE_MAP, NULL);
return map;
}
/**
* gst_vaapi_texture_map_add:
* @map: a #GstVaapiTextureMap instance
* @texture: a #GstVaapiTexture instance to add
* @id: the id of the GLTexture
*
* Adds @texture into the @map table.
*
* Returns: %TRUE if @texture was inserted correctly.
**/
gboolean
gst_vaapi_texture_map_add (GstVaapiTextureMap * map, GstVaapiTexture * texture,
guint id)
{
g_return_val_if_fail (map != NULL, FALSE);
g_return_val_if_fail (map->texture_map != NULL, FALSE);
g_return_val_if_fail (texture != NULL, FALSE);
if (g_hash_table_size (map->texture_map) > MAX_NUM_TEXTURE) {
GST_WARNING ("Texture map is full");
return FALSE;
}
g_hash_table_insert (map->texture_map, GUINT_TO_POINTER (id), texture);
return TRUE;
}
/**
* gst_vaapi_texture_map_lookup:
* @map: a #GstVaapiTextureMap instance
* @id: the id of the GLTexture
*
* Search for the #GstVaapiTexture associated with the GLTexture @id
* in the @map.
*
* Returns: a pointer to #GstVaapiTexture if found; otherwise %NULL.
**/
GstVaapiTexture *
gst_vaapi_texture_map_lookup (GstVaapiTextureMap * map, guint id)
{
g_return_val_if_fail (map != NULL, NULL);
g_return_val_if_fail (map->texture_map != NULL, NULL);
return g_hash_table_lookup (map->texture_map, GUINT_TO_POINTER (id));
}
/**
* gst_vaapi_texture_map_reset:
* @map: a #GstVaapiTextureMap instance
*
* Removes all the #GstVaapiTexture in the @map.
**/
void
gst_vaapi_texture_map_reset (GstVaapiTextureMap * map)
{
g_return_if_fail (map != NULL);
g_return_if_fail (map->texture_map != NULL);
g_hash_table_remove_all (map->texture_map);
}