public uint[] RGB32 = new uint[(1 << 18)]; //正好1M Bytes
//RGB色板是根据YCrCbPalette中的三色分量色板生成的
public RGBPalette(YCrCbPalette ycc)
{
for (int y = 0; y < 256; y++)
{
for (int cr = 0; cr < 32; cr++)
{
for (int cb = 0; cb < 32; cb++)
{
//以YCbCr三分量的合成矢量作为RGB色板索引
RGB32[(cb << 13) | (cr << 8) | y] = YCbCr2RGB(ycc.Y[y], ycc.Cb[cb], ycc.Cr[cr]);
}
}
}
}
public Y64(string fn) //ok
{
fs = new FileStream(fn, FileMode.Open, FileAccess.Read);
br = new BinaryReader(fs);
//检测Y74的6字节文件标志46 43 44 45 00 00
int id = br.ReadInt32();
Debug.Assert(id == 0x45444346);
id = br.ReadInt16();
Debug.Assert(id == 0);
//版本标志：commandos 2 or commandos 3
version = br.ReadInt16();
Debug.Assert(version >= 2 && version <= 4);
if (version > 2)
{
version = 3;
}
//获得YCrCb色板和RGB色板
if (version == 2)
{
palette = new YCrCbPalette(br, 48);
}
else
{
palette = new YCrCbPalette(br, 113);
}
rgb = new RGBPalette(palette);
//获得视角数和每视角的图片数
num_view = br.ReadInt32();
num_pic_per_view = br.ReadInt32();
//获得每一图片的起始位置
ptr_pics = new long[num_view, num_pic_per_view];
for (int i = 0; i < num_view; i++)
{
for (int j = 0; j < num_pic_per_view; j++)
{
ptr_pics[i, j] = br.ReadInt32();
}
}
}
