FSO.Files.Formats.IFF.Chunks.SPRFrame.Decode C# (CSharp) Method

        private void Decode(IoBuffer io)
        {
            var palette = Parent.ChunkParent.Get<PALT>(Parent.PaletteID);
            if (palette == null)
            {
                palette = DEFAULT_PALT;
            }

            var y = 0;
            var endmarker = false;

            while (!endmarker){
                var command = io.ReadByte();
                var count = io.ReadByte();

                switch (command){
                    /** Start marker **/
                    case 0x00:
                    case 0x10:
                        break;
                    /** Fill row with pixel data **/
                    case 0x04:
                        var bytes = count - 2;
                        var x = 0;

                        while (bytes > 0){
                            var pxCommand = io.ReadByte();
                            var pxCount = io.ReadByte();
                            bytes -= 2;

                            switch (pxCommand){
                                /** Next {n} pixels are transparent **/
                                case 0x01:
                                    x += pxCount;
                                    break;
                                /** Next {n} pixels are the same palette color **/
                                case 0x02:
                                    var index = io.ReadByte();
                                    var padding = io.ReadByte();
                                    bytes -= 2;

                                    var color = palette.Colors[index];
                                    for (var j=0; j < pxCount; j++){
                                        this.SetPixel(x, y, color);
                                        x++;
                                    }
                                    break;
                                /** Next {n} pixels are specific palette colours **/
                                case 0x03:
                                    for (var j=0; j < pxCount; j++){
                                        var index2 = io.ReadByte();
                                        var color2 = palette.Colors[index2];
                                        this.SetPixel(x, y, color2);
                                        x++;
                                    }
                                    bytes -= pxCount;
                                    if (pxCount % 2 != 0){
                                        //Padding
                                        io.ReadByte();
                                        bytes--;
                                    }
                                    break;
                            }
                        }

                        y++;
                        break;
                    /** End marker **/
                    case 0x05:
                        endmarker = true;
                        break;
                    /** Leave next rows transparent **/
                    case 0x09:
                        y += count;
                        continue;
                }

            }
        }