/* * 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; 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; }