gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gsttensor.c

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/* GStreamer
* Copyright (C) 2023 Collabora Ltd
*
* gstanalyticsmeta.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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gsttensor.h"
#define GST_TENSOR_SIZE(num_dims) \
(sizeof (GstTensor) + (sizeof (gsize) * num_dims))
G_DEFINE_BOXED_TYPE (GstTensor, gst_tensor,
(GBoxedCopyFunc) gst_tensor_copy, (GBoxedFreeFunc) gst_tensor_free);
/**
* gst_tensor_alloc: (constructor)
* @num_dims: Number of dimension of the tensors
*
* Allocate a tensor with @num_dims dimensions.
*
* Returns: (transfer full) (not nullable): tensor allocated
*
* Since: 1.26
*/
GstTensor *
gst_tensor_alloc (gsize num_dims)
{
GstTensor *tensor = g_malloc0 (GST_TENSOR_SIZE (num_dims));
tensor->num_dims = num_dims;
return tensor;
}
}
/**
* gst_tensor_free:
* @tensor: (in) (transfer full): pointer to tensor to free
*
* Free tensor
*
* Since: 1.26
*/
void
gst_tensor_free (GstTensor * tensor)
{
if (tensor->data != NULL) {
gst_buffer_unref (tensor->data);
}
g_free (tensor);
}
/**
* gst_tensor_copy:
* @tensor: (transfer none) (nullable): a #GstTensor to be copied
*
* Create a copy of @tensor.
*
* Returns: (transfer full) (nullable): a new #GstTensor
*
* Since: 1.26
*/
GstTensor *
gst_tensor_copy (const GstTensor * tensor)
{
GstTensor *copy = NULL;
if (tensor) {
copy = (GstTensor *) g_memdup2 (tensor, GST_TENSOR_SIZE (tensor->num_dims));
if (copy->data)
gst_buffer_ref (copy->data);
}
return copy;
}