content: /*
   * Copyright 2002-2019 Drew Noakes and contributors
   *
   *    Licensed under the Apache License, Version 2.0 (the "License");
   *    you may not use this file except in compliance with the License.
   *    You may obtain a copy of the License at
   *
   *        https://www.apache.org/licenses/LICENSE-2.0
   *
   *    Unless required by applicable law or agreed to in writing, software
   *    distributed under the License is distributed on an "AS IS" BASIS,
   *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *    See the License for the specific language governing permissions and
   *    limitations under the License.
   *
   * More information about this project is available at:
   *
   *    https://drewnoakes.com/code/exif/
   *    https://github.com/drewnoakes/metadata-extractor
   */
  package com.drew.metadata.mov.atoms;
  
  import com.drew.lang.SequentialReader;
  import com.drew.lang.annotations.NotNull;
  import com.drew.metadata.mov.QuickTimeDictionary;
  import com.drew.metadata.mov.media.QuickTimeVideoDirectory;
  
  import java.io.IOException;
  
  /**
   * https://developer.apple.com/library/content/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html#//apple_ref/doc/uid/TP40000939-CH205-BBCGICBJ
   *
   * @author Payton Garland
   */
  public class VideoSampleDescriptionAtom extends SampleDescriptionAtom<VideoSampleDescriptionAtom.VideoSampleDescription>
  {
      public VideoSampleDescriptionAtom(SequentialReader reader, Atom atom) throws IOException
      {
          super(reader, atom);
      }
  
      @NotNull
      @Override
      VideoSampleDescription getSampleDescription(SequentialReader reader) throws IOException
      {
          return new VideoSampleDescription(reader);
      }
  
      public void addMetadata(QuickTimeVideoDirectory directory)
      {
          if (sampleDescriptions.size() == 0) {
              return;
          }
  
          VideoSampleDescription sampleDescription = sampleDescriptions.get(0);
  
          QuickTimeDictionary.setLookup(QuickTimeVideoDirectory.TAG_VENDOR, sampleDescription.vendor, directory);
          QuickTimeDictionary.setLookup(QuickTimeVideoDirectory.TAG_COMPRESSION_TYPE, sampleDescription.dataFormat, directory);
  
          directory.setLong(QuickTimeVideoDirectory.TAG_TEMPORAL_QUALITY, sampleDescription.temporalQuality);
          directory.setLong(QuickTimeVideoDirectory.TAG_SPATIAL_QUALITY, sampleDescription.spatialQuality);
          directory.setInt(QuickTimeVideoDirectory.TAG_WIDTH, sampleDescription.width);
          directory.setInt(QuickTimeVideoDirectory.TAG_HEIGHT, sampleDescription.height);
  
          String compressorName = sampleDescription.compressorName.trim();
          if (!compressorName.isEmpty()) {
              directory.setString(QuickTimeVideoDirectory.TAG_COMPRESSOR_NAME, compressorName);
          }
  
          directory.setInt(QuickTimeVideoDirectory.TAG_DEPTH, sampleDescription.depth);
          directory.setInt(QuickTimeVideoDirectory.TAG_COLOR_TABLE, sampleDescription.colorTableID);
  
          double horizontalInteger = (sampleDescription.horizontalResolution & 0xFFFF0000) >> 16;
          double horizontalFraction = (sampleDescription.horizontalResolution & 0xFFFF) / Math.pow(2, 4);
          directory.setDouble(QuickTimeVideoDirectory.TAG_HORIZONTAL_RESOLUTION, horizontalInteger + horizontalFraction);
  
          double verticalInteger = (sampleDescription.verticalResolution & 0xFFFF0000) >> 16;
          double verticalFraction = (sampleDescription.verticalResolution & 0xFFFF) / Math.pow(2, 4);
          directory.setDouble(QuickTimeVideoDirectory.TAG_VERTICAL_RESOLUTION, verticalInteger + verticalFraction);
      }
  
      static class VideoSampleDescription extends SampleDescription
      {
          int version;
          int revisionLevel;
          String vendor;
          long temporalQuality;
          long spatialQuality;
          int width;
          int height;
          long horizontalResolution;
          long verticalResolution;
          long dataSize;
          int frameCount;
          String compressorName;
          int depth;
          int colorTableID;
  
          public VideoSampleDescription(SequentialReader reader) throws IOException
          {
              super(reader);
  
              version = reader.getUInt16();
              revisionLevel = reader.getUInt16();
              vendor = reader.getString(4);
              temporalQuality = reader.getUInt32();
              spatialQuality = reader.getUInt32();
              width = reader.getUInt16();
              height = reader.getUInt16();
              horizontalResolution = reader.getUInt32();
              verticalResolution = reader.getUInt32();
              dataSize = reader.getUInt32();
              frameCount = reader.getUInt16();
              compressorName = reader.getString(32);
              depth = reader.getUInt16();
              colorTableID = reader.getInt16();
          }
      }
  }
  