| public GetChunksList ( ) : Hjg.Pngcs.Chunks.ChunksList | ||
| return | Hjg.Pngcs.Chunks.ChunksList | |
/// <summary>
/// copy chunks from reader - copy_mask : see ChunksToWrite.COPY_XXX
/// If we are after idat, only considers those chunks after IDAT in PngReader
/// TODO: this should be more customizable
/// </summary>
///
private void CopyChunks(PngReader reader, int copy_mask, bool onlyAfterIdat) {
bool idatDone = CurrentChunkGroup >= ChunksList.CHUNK_GROUP_4_IDAT;
if (onlyAfterIdat && reader.CurrentChunkGroup < ChunksList.CHUNK_GROUP_6_END) throw new PngjException("tried to copy last chunks but reader has not ended");
foreach (PngChunk chunk in reader.GetChunksList().GetChunks()) {
int group = chunk.ChunkGroup;
if (group < ChunksList.CHUNK_GROUP_4_IDAT && idatDone)
continue;
bool copy = false;
if (chunk.Crit) {
if (chunk.Id.Equals(ChunkHelper.PLTE, StringComparison.InvariantCultureIgnoreCase)) {
if (ImgInfo.Indexed && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_PALETTE))
copy = true;
if (!ImgInfo.Greyscale && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL))
copy = true;
}
} else { // ancillary
bool text = chunk is PngChunkTextVar;
bool safe = chunk.Safe;
// notice that these if are not exclusive
if (ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL))
copy = true;
if (safe && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL_SAFE))
copy = true;
if (chunk.Id.Equals(ChunkHelper.tRNS, StringComparison.InvariantCultureIgnoreCase)
&& ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_TRANSPARENCY))
copy = true;
if (chunk.Id.Equals(ChunkHelper.pHYs, StringComparison.InvariantCultureIgnoreCase) && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_PHYS))
copy = true;
if (text && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_TEXTUAL))
copy = true;
if (ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALMOSTALL)
&& !(ChunkHelper.IsUnknown(chunk) || text || chunk.Id.Equals(ChunkHelper.hIST, StringComparison.InvariantCultureIgnoreCase) || chunk.Id.Equals(ChunkHelper.tIME, StringComparison.InvariantCultureIgnoreCase)))
copy = true;
if (chunk is PngChunkSkipped)
copy = false;
}
if (copy)
chunksList.Queue(PngChunk.CloneChunk(chunk, ImgInfo));
}
}
private void CopyChunks( PngReader reader, int copy_mask, bool onlyAfterIdat )
{
bool idatDone = CurrentChunkGroup >= ChunksList.CHUNK_GROUP_4_IDAT;
if ( onlyAfterIdat && reader.CurrentChunkGroup < ChunksList.CHUNK_GROUP_6_END ) throw new PngjException ( "tried to copy last chunks but reader has not ended" );
foreach ( PngChunk chunk in reader.GetChunksList ().GetChunks () )
{
int group = chunk.ChunkGroup;
if ( group < ChunksList.CHUNK_GROUP_4_IDAT && idatDone )
continue;
bool copy = false;
if ( chunk.Crit )
{
if ( chunk.Id.Equals ( ChunkHelper.PLTE ) )
{
if ( ImgInfo.Indexed && ChunkHelper.maskMatch ( copy_mask, ChunkCopyBehaviour.COPY_PALETTE ) )
copy = true;
if ( !ImgInfo.Greyscale && ChunkHelper.maskMatch ( copy_mask, ChunkCopyBehaviour.COPY_ALL ) )
copy = true;
}
}
else
{
bool text = ( chunk is PngChunkTextVar );
bool safe = chunk.Safe;
if ( ChunkHelper.maskMatch ( copy_mask, ChunkCopyBehaviour.COPY_ALL ) )
copy = true;
if ( safe && ChunkHelper.maskMatch ( copy_mask, ChunkCopyBehaviour.COPY_ALL_SAFE ) )
copy = true;
if ( chunk.Id.Equals ( ChunkHelper.tRNS )
&& ChunkHelper.maskMatch ( copy_mask, ChunkCopyBehaviour.COPY_TRANSPARENCY ) )
copy = true;
if ( chunk.Id.Equals ( ChunkHelper.pHYs ) && ChunkHelper.maskMatch ( copy_mask, ChunkCopyBehaviour.COPY_PHYS ) )
copy = true;
if ( text && ChunkHelper.maskMatch ( copy_mask, ChunkCopyBehaviour.COPY_TEXTUAL ) )
copy = true;
if ( ChunkHelper.maskMatch ( copy_mask, ChunkCopyBehaviour.COPY_ALMOSTALL )
&& !( ChunkHelper.IsUnknown ( chunk ) || text || chunk.Id.Equals ( ChunkHelper.hIST ) || chunk.Id
.Equals ( ChunkHelper.tIME ) ) )
copy = true;
if ( chunk is PngChunkSkipped )
copy = false;
}
if ( copy )
{
chunksList.Queue ( PngChunk.CloneChunk ( chunk, ImgInfo ) );
}
}
}
/// <summary>
/// copy chunks from reader - copy_mask : see ChunksToWrite.COPY_XXX
/// If we are after idat, only considers those chunks after IDAT in PngReader
/// TODO: this should be more customizable
/// </summary>
///
private void CopyChunks(PngReader reader, int copy_mask, bool onlyAfterIdat)
{
if (reader is null)
{
throw new ArgumentNullException(nameof(reader));
}
var idatDone = CurrentChunkGroup >= ChunksList.CHUNK_GROUP_4_IDAT;
if (onlyAfterIdat && reader.CurrentChunkGroup < ChunksList.CHUNK_GROUP_6_END)
{
throw new PngjException("tried to copy last chunks but reader has not ended");
}
foreach (var chunk in reader.GetChunksList().Chunks)
{
var group = chunk.ChunkGroup;
if (group < ChunksList.CHUNK_GROUP_4_IDAT && idatDone)
{
continue;
}
var copy = false;
if (chunk.Crit)
{
if (chunk.Id.Equals(ChunkHelper.PLTE, StringComparison.Ordinal))
{
if (ImgInfo.Indexed && ChunkHelper.MaskMatch(copy_mask, ChunkCopyBehaviour.COPY_PALETTE))
{
copy = true;
}
if (!ImgInfo.Greyscale && ChunkHelper.MaskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL))
{
copy = true;
}
}
}
else
{ // ancillary
var text = (chunk is AbstractPngChunkTextVar);
var safe = chunk.Safe;
// notice that these if are not exclusive
if (ChunkHelper.MaskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL))
{
copy = true;
}
if (safe && ChunkHelper.MaskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL_SAFE))
{
copy = true;
}
if (chunk.Id.Equals(ChunkHelper.tRNS, StringComparison.Ordinal) &&
ChunkHelper.MaskMatch(copy_mask, ChunkCopyBehaviour.COPY_TRANSPARENCY))
{
copy = true;
}
if (chunk.Id.Equals(ChunkHelper.pHYs, StringComparison.Ordinal) &&
ChunkHelper.MaskMatch(copy_mask, ChunkCopyBehaviour.COPY_PHYS))
{
copy = true;
}
if (text &&
ChunkHelper.MaskMatch(copy_mask, ChunkCopyBehaviour.COPY_TEXTUAL))
{
copy = true;
}
if (((ChunkHelper.MaskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALMOSTALL) &&
!ChunkHelper.IsUnknown(chunk)) ||
text ||
chunk.Id.Equals(ChunkHelper.hIST, StringComparison.Ordinal) ||
chunk.Id.Equals(ChunkHelper.tIME, StringComparison.Ordinal)))
{
copy = true;
}
if (chunk is PngChunkSkipped)
{
copy = false;
}
}
if (copy)
{
_ = chunksList.Queue(AbstractPngChunk.CloneChunk(chunk, ImgInfo));
}
}
}
public void CopyChunks(PngReader reader, int copy_mask, bool onlyAfterIdat)
{
bool flag = CurrentChunkGroup >= 4;
if (onlyAfterIdat && reader.CurrentChunkGroup < 6)
{
throw new PngjException("tried to copy last chunks but reader has not ended");
}
foreach (PngChunk chunk in reader.GetChunksList().GetChunks())
{
if (chunk.ChunkGroup >= 4 || !flag)
{
bool flag2 = false;
if (chunk.Crit)
{
if (chunk.Id.Equals("PLTE"))
{
if (ImgInfo.Indexed && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_PALETTE))
{
flag2 = true;
}
if (!ImgInfo.Greyscale && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL))
{
flag2 = true;
}
}
}
else
{
bool flag3 = chunk is PngChunkTextVar;
bool safe = chunk.Safe;
if (ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL))
{
flag2 = true;
}
if (safe && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALL_SAFE))
{
flag2 = true;
}
if (chunk.Id.Equals("tRNS") && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_TRANSPARENCY))
{
flag2 = true;
}
if (chunk.Id.Equals("pHYs") && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_PHYS))
{
flag2 = true;
}
if (flag3 && ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_TEXTUAL))
{
flag2 = true;
}
if (ChunkHelper.maskMatch(copy_mask, ChunkCopyBehaviour.COPY_ALMOSTALL) && !(ChunkHelper.IsUnknown(chunk) | flag3) && !chunk.Id.Equals("hIST") && !chunk.Id.Equals("tIME"))
{
flag2 = true;
}
if (chunk is PngChunkSkipped)
{
flag2 = false;
}
}
if (flag2)
{
chunksList.Queue(PngChunk.CloneChunk(chunk, ImgInfo));
}
}
}
}
