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ffmpeg-4.2.2/libavutil/mastering_display_metadata.c 2.25 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /**
   * Copyright (c) 2016 Neil Birkbeck <neil.birkbeck@gmail.com>
   *
   * 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 <stdint.h>
  #include <string.h>
  
  #include "mastering_display_metadata.h"
  #include "mem.h"
  
  AVMasteringDisplayMetadata *av_mastering_display_metadata_alloc(void)
  {
      return av_mallocz(sizeof(AVMasteringDisplayMetadata));
  }
  
  AVMasteringDisplayMetadata *av_mastering_display_metadata_create_side_data(AVFrame *frame)
  {
      AVFrameSideData *side_data = av_frame_new_side_data(frame,
                                                          AV_FRAME_DATA_MASTERING_DISPLAY_METADATA,
                                                          sizeof(AVMasteringDisplayMetadata));
      if (!side_data)
          return NULL;
  
      memset(side_data->data, 0, sizeof(AVMasteringDisplayMetadata));
  
      return (AVMasteringDisplayMetadata *)side_data->data;
  }
  
  AVContentLightMetadata *av_content_light_metadata_alloc(size_t *size)
  {
      AVContentLightMetadata *metadata = av_mallocz(sizeof(AVContentLightMetadata));
  
      if (size)
          *size = sizeof(*metadata);
  
      return metadata;
  }
  
  AVContentLightMetadata *av_content_light_metadata_create_side_data(AVFrame *frame)
  {
      AVFrameSideData *side_data = av_frame_new_side_data(frame,
                                                          AV_FRAME_DATA_CONTENT_LIGHT_LEVEL,
                                                          sizeof(AVContentLightMetadata));
      if (!side_data)
          return NULL;
  
      memset(side_data->data, 0, sizeof(AVContentLightMetadata));
  
      return (AVContentLightMetadata *)side_data->data;
  }