public static short[] ReadAnimationFrameValues(this System.IO.BinaryReader br, Int32 count)
{
/*
* RLE data:
* Byte compressed_length - compressed number of values in the data
* Byte uncompressed_length - uncompressed number of values in run
* short values[compressed_length] - values in the run, the last value is repeated to reach the uncompressed length
*/
Int16[] values = new Int16[count];
for (var i = 0; i < count; /* i = i */)
{
Byte[] run = br.ReadBytes(2); // read the compressed and uncompressed lengths
Int16[] vals = br.ReadShortArray(run[0]); // read the compressed data
for (Int32 j = 0; j < run[1] && i < count; i++, j++)
{
Int32 idx = Math.Min(run[0] - 1, j); // value in the data or the last value if we're past the end
values[i] = vals[idx];
}
}
return(values);
}
