/*public byte[] Data
* {
* get{return data;}
* }*/
public unsafe TheoraDecoder()
{
Console.WriteLine(Theora.Version());
fixed(Theora.th_info *p = &info)
{
Theora.th_info_init(p);
}
Theora.th_comment_init(ref comment);
}
public int PacketIn(csogg.Packet pp)
{
Theora.ogg_packet op = new Theora.ogg_packet();
op.bytes = new IntPtr(pp.bytes);
op.b_o_s = new IntPtr(pp.b_o_s);
op.e_o_s = new IntPtr(pp.e_o_s);
op.granulepos = pp.granulepos;
op.packet = Marshal.UnsafeAddrOfPinnedArrayElement(pp.packet_base, pp.packet);
op.packetno = pp.packetno;
if (!HeadersRead)
{
int r = Theora.th_decode_headerin(ref info, ref comment, ref setup, ref op);
if (r == 0)
{
Console.WriteLine("header complete");
width = (int)info.frame_width;
height = (int)info.frame_height;
Data = new byte[width * height * 3];
Console.WriteLine(width.ToString() + "x" + height.ToString());
HeadersRead = true;
decode = Theora.th_decode_alloc(ref info, setup);
if (decode == IntPtr.Zero)
{
throw new Exception("decode");
}
}
else
{
return(0);
}
}
ogg_int64_t granpos = 0;
int i;
if (Theora.th_decode_packetin(decode, ref op, ref granpos) == 0)
{
//Console.WriteLine("frame complete"+granpos.ToString());
Theora.th_ycbcr_buffer picture = new Theora.th_ycbcr_buffer();
i = Theora.th_decode_ycbcr_out(decode, ref picture);
if (i != 0)
{
throw new Exception("picture");
}
float xfactor1 = (float)picture.plane1.width / (float)picture.plane0.width;
float yfactor1 = (float)picture.plane1.height / (float)picture.plane0.height;
float xfactor2 = (float)picture.plane2.width / (float)picture.plane0.width;
float yfactor2 = (float)picture.plane2.height / (float)picture.plane0.height;
if (ConvertToRGB)
{
for (int y = 0; y < picture.plane0.height; ++y)
{
for (int x = 0; x < picture.plane0.width; ++x)
{
float Y = Marshal.ReadByte(picture.plane0.data, y * picture.plane0.stride + x);
float Cb = Marshal.ReadByte(picture.plane1.data, (int)((float)y * yfactor1 * (float)picture.plane1.stride + (float)x * xfactor1));
float Cr = Marshal.ReadByte(picture.plane2.data, (int)((float)y * yfactor2 * (float)picture.plane2.stride + (float)x * xfactor2));
int R = (int)(Y + 1.402f * (Cr - 128.0f));
int G = (int)(Y - 0.34414f * (Cb - 128.0f) - 0.71414f * (Cr - 128.0f));
int B = (int)(Y + 1.772f * (Cb - 128.0f));
R = Clamp(R, 255, 0);
G = Clamp(G, 255, 0);
B = Clamp(B, 255, 0);
Data[y * width * 3 + x * 3] = (byte)B;
Data[y * width * 3 + x * 3 + 1] = (byte)G;
Data[y * width * 3 + x * 3 + 2] = (byte)R;
//w.WriteLine(R.ToString()+" "+G.ToString()+" "+B.ToString());
}
}
}
else
{
for (int y = 0; y < picture.plane0.height; ++y)
{
for (int x = 0; x < picture.plane0.width; ++x)
{
byte Y = Marshal.ReadByte(picture.plane0.data, y * picture.plane0.stride + x);
byte Cb = Marshal.ReadByte(picture.plane1.data, (int)((float)y * yfactor1 * (float)picture.plane1.stride + (float)x * xfactor1));
byte Cr = Marshal.ReadByte(picture.plane2.data, (int)((float)y * yfactor2 * (float)picture.plane2.stride + (float)x * xfactor2));
Data[y * width * 3 + x * 3] = (byte)Y;
Data[y * width * 3 + x * 3 + 1] = (byte)Cb;
Data[y * width * 3 + x * 3 + 2] = (byte)Cr;
//w.WriteLine(R.ToString()+" "+G.ToString()+" "+B.ToString());
}
}
}
//w.Close();
//f.Close();
frame++;
return(1);
}
return(0);
}
