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7f1b590480
Prevent potential divisions by 0 when using them immediately after allocation. Signed-off-by: James Almer <jamrial@gmail.com>
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
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* Copyright (c) 2023 Jan Ekström <jeebjp@gmail.com>
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*
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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 "ambient_viewing_environment.h"
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#include "mem.h"
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static void get_defaults(AVAmbientViewingEnvironment *env)
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{
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env->ambient_illuminance =
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env->ambient_light_x =
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env->ambient_light_y = (AVRational) { 0, 1 };
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}
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AVAmbientViewingEnvironment *av_ambient_viewing_environment_alloc(size_t *size)
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{
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AVAmbientViewingEnvironment *env =
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av_mallocz(sizeof(AVAmbientViewingEnvironment));
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if (!env)
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return NULL;
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get_defaults(env);
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if (size)
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*size = sizeof(*env);
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return env;
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}
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AVAmbientViewingEnvironment *av_ambient_viewing_environment_create_side_data(AVFrame *frame)
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{
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AVFrameSideData *side_data =
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av_frame_new_side_data(frame,
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AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT,
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sizeof(AVAmbientViewingEnvironment));
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if (!side_data)
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return NULL;
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memset(side_data->data, 0, side_data->size);
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get_defaults((AVAmbientViewingEnvironment *)side_data->data);
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return (AVAmbientViewingEnvironment *)side_data->data;
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}
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