mirror of https://git.ffmpeg.org/ffmpeg.git
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
|
/*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg 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.
|
||
|
|
*
|
||
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "detection_bbox.h"
|
||
|
|
|
||
|
|
AVDetectionBBoxHeader *av_detection_bbox_alloc(uint32_t nb_bboxes, size_t *out_size)
|
||
|
|
{
|
||
|
|
size_t size;
|
||
|
|
struct {
|
||
|
|
AVDetectionBBoxHeader header;
|
||
|
|
AVDetectionBBox boxes[1];
|
||
|
|
} *ret;
|
||
|
|
|
||
|
|
size = sizeof(*ret);
|
||
|
|
if (nb_bboxes - 1 > (SIZE_MAX - size) / sizeof(*ret->boxes))
|
||
|
|
return NULL;
|
||
|
|
size += sizeof(*ret->boxes) * (nb_bboxes - 1);
|
||
|
|
|
||
|
|
ret = av_mallocz(size);
|
||
|
|
if (!ret)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
ret->header.nb_bboxes = nb_bboxes;
|
||
|
|
ret->header.bbox_size = sizeof(*ret->boxes);
|
||
|
|
ret->header.bboxes_offset = (char *)&ret->boxes - (char *)&ret->header;
|
||
|
|
|
||
|
|
if (out_size)
|
||
|
|
*out_size = size;
|
||
|
|
|
||
|
|
return &ret->header;
|
||
|
|
}
|
||
|
|
|
||
|
|
AVDetectionBBoxHeader *av_detection_bbox_create_side_data(AVFrame *frame, uint32_t nb_bboxes)
|
||
|
|
{
|
||
|
|
AVBufferRef *buf;
|
||
|
|
AVDetectionBBoxHeader *header;
|
||
|
|
size_t size;
|
||
|
|
|
||
|
|
header = av_detection_bbox_alloc(nb_bboxes, &size);
|
||
|
|
if (!header)
|
||
|
|
return NULL;
|
||
|
|
if (size > INT_MAX) {
|
||
|
|
av_freep(&header);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
buf = av_buffer_create((uint8_t *)header, size, NULL, NULL, 0);
|
||
|
|
if (!buf) {
|
||
|
|
av_freep(&header);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!av_frame_new_side_data_from_buf(frame, AV_FRAME_DATA_DETECTION_BBOXES, buf)) {
|
||
|
|
av_buffer_unref(&buf);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return header;
|
||
|
|
}
|