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libavutil/tdrdi.c
51 строка
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James Almer
avutil: add an API to handle 3D Reference Displays Information
01 июл 2025, 23:41
01 июл 2025, 23:41
80a05be
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/* * 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 <stddef.h> #include <stdint.h> #include "mem.h" #include "tdrdi.h" AV3DReferenceDisplaysInfo *av_tdrdi_alloc(unsigned int nb_displays, size_t *out_size) { struct TestStruct { AV3DReferenceDisplaysInfo p; AV3DReferenceDisplay b; }; const size_t entries_offset = offsetof(struct TestStruct, b); size_t size = entries_offset; AV3DReferenceDisplaysInfo *tdrdi; if (nb_displays > (SIZE_MAX - size) / sizeof(AV3DReferenceDisplay)) return NULL; size += sizeof(AV3DReferenceDisplay) * nb_displays; tdrdi = av_mallocz(size); if (!tdrdi) return NULL; tdrdi->num_ref_displays = nb_displays; tdrdi->entry_size = sizeof(AV3DReferenceDisplay); tdrdi->entries_offset = entries_offset; if (out_size) *out_size = size; return tdrdi; }