gstreamer/subprojects/gst-plugins-bad/ext/onnx/tensor/gsttensormeta.c

89 lines
2.3 KiB
C

/*
* GStreamer gstreamer-tensormeta
* Copyright (C) 2023 Collabora Ltd
*
* gsttensormeta.c
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "gsttensormeta.h"
static gboolean
gst_tensor_meta_init (GstMeta * meta, gpointer params, GstBuffer * buffer)
{
GstTensorMeta *tmeta = (GstTensorMeta *) meta;
tmeta->num_tensors = 0;
tmeta->tensor = NULL;
return TRUE;
}
static void
gst_tensor_meta_free (GstMeta * meta, GstBuffer * buffer)
{
GstTensorMeta *tmeta = (GstTensorMeta *) meta;
for (int i = 0; i < tmeta->num_tensors; i++) {
g_free (tmeta->tensor[i].dims);
gst_buffer_unref (tmeta->tensor[i].data);
}
g_free (tmeta->tensor);
}
GType
gst_tensor_meta_api_get_type (void)
{
static GType type = 0;
static const gchar *tags[] = { NULL };
if (g_once_init_enter (&type)) {
GType _type = gst_meta_api_type_register ("GstTensorMetaAPI", tags);
g_once_init_leave (&type, _type);
}
return type;
}
const GstMetaInfo *
gst_tensor_meta_get_info (void)
{
static const GstMetaInfo *tmeta_info = NULL;
if (g_once_init_enter (&tmeta_info)) {
const GstMetaInfo *meta =
gst_meta_register (gst_tensor_meta_api_get_type (),
"GstTensorMeta",
sizeof (GstTensorMeta),
gst_tensor_meta_init,
gst_tensor_meta_free,
NULL); /* tensor_meta_transform not implemented */
g_once_init_leave (&tmeta_info, meta);
}
return tmeta_info;
}
gint
gst_tensor_meta_get_index_from_id (GstTensorMeta * meta, GQuark id)
{
for (int i = 0; i < meta->num_tensors; ++i) {
if ((meta->tensor + i)->id == id)
return i;
}
return GST_TENSOR_MISSING_ID;
}