/**
* this should be called only for ancillary chunks and PLTE (groups 1 - 3 - 5)
**/
private static bool shouldWrite(PngChunk c, int currentGroup)
{
if (currentGroup == CHUNK_GROUP_2_PLTE)
{
return(c.Id.Equals(ChunkHelper.PLTE));
}
if (currentGroup % 2 == 0)
{
throw new PngjOutputException("bad chunk group?");
}
int minChunkGroup, maxChunkGroup;
if (c.mustGoBeforePLTE())
{
minChunkGroup = maxChunkGroup = ChunksList.CHUNK_GROUP_1_AFTERIDHR;
}
else if (c.mustGoBeforeIDAT())
{
maxChunkGroup = ChunksList.CHUNK_GROUP_3_AFTERPLTE;
minChunkGroup = c.mustGoAfterPLTE() ? ChunksList.CHUNK_GROUP_3_AFTERPLTE
: ChunksList.CHUNK_GROUP_1_AFTERIDHR;
}
else
{
maxChunkGroup = ChunksList.CHUNK_GROUP_5_AFTERIDAT;
minChunkGroup = ChunksList.CHUNK_GROUP_1_AFTERIDHR;
}
int preferred = maxChunkGroup;
if (c.Priority)
{
preferred = minChunkGroup;
}
if (ChunkHelper.IsUnknown(c) && c.ChunkGroup > 0)
{
preferred = c.ChunkGroup;
}
if (currentGroup == preferred)
{
return(true);
}
if (currentGroup > preferred && currentGroup <= maxChunkGroup)
{
return(true);
}
return(false);
}
public static bool shouldWrite(PngChunk c, int currentGroup)
{
if (currentGroup == 2)
{
return(c.Id.Equals("PLTE"));
}
if (currentGroup % 2 == 0)
{
throw new PngjOutputException("bad chunk group?");
}
int num2;
int num;
if (c.mustGoBeforePLTE())
{
num2 = (num = 1);
}
else if (c.mustGoBeforeIDAT())
{
num = 3;
num2 = ((!c.mustGoAfterPLTE()) ? 1 : 3);
}
else
{
num = 5;
num2 = 1;
}
int num3 = num;
if (c.Priority)
{
num3 = num2;
}
if (ChunkHelper.IsUnknown(c) && c.ChunkGroup > 0)
{
num3 = c.ChunkGroup;
}
if (currentGroup == num3)
{
return(true);
}
if (currentGroup > num3 && currentGroup <= num)
{
return(true);
}
return(false);
}
