public AvifWriter(IReadOnlyList <CompressedAV1Image> colorImages,
IReadOnlyList <CompressedAV1Image> alphaImages,
AvifMetadata metadata,
ImageGridMetadata imageGridMetadata,
YUVChromaSubsampling chromaSubsampling,
ColorInformationBox colorInformationBox,
ProgressEventHandler progressEventHandler,
uint progressDone,
uint progressTotal,
IByteArrayPool arrayPool)
{
this.state = new AvifWriterState(colorImages, alphaImages, imageGridMetadata, metadata, arrayPool);
this.arrayPool = arrayPool;
this.colorImageIsGrayscale = chromaSubsampling == YUVChromaSubsampling.Subsampling400;
this.colorInformationBox = colorInformationBox;
this.progressCallback = progressEventHandler;
this.progressDone = progressDone;
this.progressTotal = progressTotal;
this.fileTypeBox = new FileTypeBox(chromaSubsampling);
this.metaBox = new MetaBox(this.state.PrimaryItemId,
this.state.Items.Count,
this.state.MediaDataBoxContentSize > uint.MaxValue,
this.state.ItemDataBox);
PopulateMetaBox();
}
private void Parse()
{
while (this.reader.Position < this.reader.Length)
{
Box header = new Box(this.reader);
if (header.Type == BoxTypes.FileType)
{
if (this.fileTypeBox != null)
{
ExceptionUtil.ThrowFormatException("The file contains multiple FileType boxes.");
}
EndianBinaryReaderSegment segment = this.reader.CreateSegment(header.DataStartOffset, header.DataLength);
this.fileTypeBox = new FileTypeBox(segment, header);
this.fileTypeBox.CheckForAvifCompatibility();
}
else if (header.Type == BoxTypes.Meta)
{
if (this.metaBox != null)
{
ExceptionUtil.ThrowFormatException("The file contains multiple Meta boxes.");
}
EndianBinaryReaderSegment segment = this.reader.CreateSegment(header.DataStartOffset, header.DataLength);
this.metaBox = new MetaBox(segment, header);
}
else
{
// Skip any other boxes
this.reader.Position = header.End;
}
}
CheckForRequiredBoxes();
}
