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This patch introduces a new frame side data type AVFilmGrainParams for use with video codecs which support it. It can save a lot of memory used for duplicate processed reference frames and reduce copies when applying film grain during presentation.
43 lines
1.4 KiB
C
43 lines
1.4 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 "film_grain_params.h"
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AVFilmGrainParams *av_film_grain_params_alloc(size_t *size)
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{
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AVFilmGrainParams *params = av_mallocz(sizeof(AVFilmGrainParams));
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if (size)
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*size = sizeof(*params);
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return params;
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}
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AVFilmGrainParams *av_film_grain_params_create_side_data(AVFrame *frame)
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{
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AVFrameSideData *side_data = av_frame_new_side_data(frame,
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AV_FRAME_DATA_FILM_GRAIN_PARAMS,
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sizeof(AVFilmGrainParams));
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if (!side_data)
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return NULL;
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memset(side_data->data, 0, sizeof(AVFilmGrainParams));
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return (AVFilmGrainParams *)side_data->data;
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}
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