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As defined in section G.14.3.2.3 of ITU-T H.265, it's required for proper signaling of MV-HEVC. Signed-off-by: James Almer <jamrial@gmail.com>
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stddef.h>
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#include <stdint.h>
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#include "mem.h"
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#include "tdrdi.h"
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AV3DReferenceDisplaysInfo *av_tdrdi_alloc(unsigned int nb_displays, size_t *out_size)
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{
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struct TestStruct {
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AV3DReferenceDisplaysInfo p;
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AV3DReferenceDisplay b;
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};
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const size_t entries_offset = offsetof(struct TestStruct, b);
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size_t size = entries_offset;
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AV3DReferenceDisplaysInfo *tdrdi;
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if (nb_displays > (SIZE_MAX - size) / sizeof(AV3DReferenceDisplay))
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return NULL;
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size += sizeof(AV3DReferenceDisplay) * nb_displays;
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tdrdi = av_mallocz(size);
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if (!tdrdi)
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return NULL;
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tdrdi->num_ref_displays = nb_displays;
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tdrdi->entry_size = sizeof(AV3DReferenceDisplay);
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tdrdi->entries_offset = entries_offset;
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if (out_size)
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*out_size = size;
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return tdrdi;
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}
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