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8169863f01
GstTensor contained two fields (data, dims) that were dynamicallay allocated. For data it's for a GstBuffer and we have pool for efficient memory management. For dims it's a small array to store the dimension of the tensor. The dims field can be allocated inplace by moving it at the end of the structure. This will allow a better memory management when GstTensor is stored in an analytics meta which will take advantage of the _clear interface for re-use. - New api to allocate and free GstTensor To continue to support use-cases where GstTensor is not stored in an analytics-meta we provide gst_tensor_alloc, gst_tensor_alloc_n and gst_tensor_free that will facilitate memory management. - Make GstTensor a boxed type Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6000>
92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/* GStreamer
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* Copyright (C) 2023 Collabora Ltd
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*
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* gstanalyticsmeta.c
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gsttensor.h"
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#define GST_TENSOR_SIZE(num_dims) \
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(sizeof (GstTensor) + (sizeof (gsize) * num_dims))
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G_DEFINE_BOXED_TYPE (GstTensor, gst_tensor,
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(GBoxedCopyFunc) gst_tensor_copy, (GBoxedFreeFunc) gst_tensor_free);
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/**
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* gst_tensor_alloc: (constructor)
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* @num_dims: Number of dimension of the tensors
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*
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* Allocate a tensor with @num_dims dimensions.
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*
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* Returns: (transfer full) (not nullable): tensor allocated
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*
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* Since: 1.26
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*/
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GstTensor *
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gst_tensor_alloc (gsize num_dims)
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{
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GstTensor *tensor = g_malloc0 (GST_TENSOR_SIZE (num_dims));
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tensor->num_dims = num_dims;
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return tensor;
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}
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}
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/**
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* gst_tensor_free:
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* @tensor: (in) (transfer full): pointer to tensor to free
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*
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* Free tensor
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*
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* Since: 1.26
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*/
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void
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gst_tensor_free (GstTensor * tensor)
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{
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if (tensor->data != NULL) {
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gst_buffer_unref (tensor->data);
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}
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g_free (tensor);
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}
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/**
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* gst_tensor_copy:
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* @tensor: (transfer none) (nullable): a #GstTensor to be copied
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*
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* Create a copy of @tensor.
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*
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* Returns: (transfer full) (nullable): a new #GstTensor
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*
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* Since: 1.26
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*/
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GstTensor *
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gst_tensor_copy (const GstTensor * tensor)
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{
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GstTensor *copy = NULL;
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if (tensor) {
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copy = (GstTensor *) g_memdup2 (tensor, GST_TENSOR_SIZE (tensor->num_dims));
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if (copy->data)
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gst_buffer_ref (copy->data);
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}
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return copy;
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}
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